CN114838147B - Electric valve - Google Patents
Electric valve Download PDFInfo
- Publication number
- CN114838147B CN114838147B CN202110176835.2A CN202110176835A CN114838147B CN 114838147 B CN114838147 B CN 114838147B CN 202110176835 A CN202110176835 A CN 202110176835A CN 114838147 B CN114838147 B CN 114838147B
- Authority
- CN
- China
- Prior art keywords
- valve
- abutting
- abutment
- valve shaft
- spool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000149 penetrating effect Effects 0.000 claims description 15
- 230000033001 locomotion Effects 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
- F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Lift Valve (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
An electric valve comprises a valve body, wherein the valve body comprises a valve seat component and a valve core rotor component, and the valve core rotor component comprises a valve shaft component, a valve core, an elastic piece and an abutting component; the valve shaft assembly includes a valve shaft abutment; the valve core comprises a first valve core abutting part and a second valve core abutting part, the valve core penetrates through the valve shaft assembly, and the first valve core abutting part can abut against the valve shaft abutting part; the elastic piece is abutted against the valve shaft assembly, the abutting component comprises a first abutting part, the elastic piece is abutted against the first abutting part, the abutting component comprises a second abutting part, the valve core comprises a second valve core abutting part, the second abutting part can be abutted against the second valve core abutting part, the abutting component comprises a third abutting part, and the third abutting part can be abutted against the valve shaft assembly; the impact force of the valve core to the valve port at the moment of contact between the valve core and the valve port can be reduced.
Description
[ field of technology ]
The invention relates to the technical field of refrigeration control, in particular to an electric valve.
[ background Art ]
Referring to fig. 11, cn109723884a discloses an electric valve having a guide bush 20, a valve shaft holder 30, a fixed male screw portion 23 provided on the guide bush 20, and a movable female screw portion 33 provided on the valve shaft holder 30, the fixed male screw portion 23 and the movable female screw portion 33 constituting a screw feed mechanism 28 of the electric valve. The valve body of the electric valve mainly comprises three parts.
The valve shaft 10 of the electric valve is configured such that a compression coil spring (urging member) 60 is disposed between a stepped surface 13 formed between the upper small diameter portion 11 and the lower large diameter portion 12 of the valve shaft 10 and a lower surface of the top portion 32 of the valve shaft holder 30, with a disk-shaped pressing plate 61 disposed on a lower surface side of the top portion 32 of the valve shaft holder 30 interposed therebetween, and is disposed so as to be externally inserted into the upper small diameter portion 11 of the valve shaft 10, and the compression coil spring 60 urges the valve shaft 10 and the valve shaft holder 30 in a direction away from each other in a lifting direction (axis O direction), in other words, the compression coil spring 60 always urges the valve shaft 10 downward (valve body 14) (valve closing direction).
[ invention ]
The invention aims to provide an electric valve, which comprises a valve body and a coil, wherein the coil is sleeved on the valve body, the valve body comprises a valve seat component and a valve core rotor component, and the valve core rotor component comprises a valve shaft component, a valve core, an elastic piece and an abutting component;
the valve shaft assembly includes a valve shaft abutment;
the valve core comprises a first valve core abutting part and a second valve core abutting part, the valve core is arranged in the valve shaft assembly in a penetrating mode, and the first valve core abutting part can abut against the valve shaft abutting part;
the upper end of the elastic piece is propped against the valve shaft assembly, the propping component comprises a first propping part, the lower end of the elastic piece is propped against the first propping part, the propping component comprises a second propping part, the valve core comprises a second valve core propping part, the second propping part can prop against the second valve core propping part, the propping component comprises a third propping part, and the third propping part can prop against the valve shaft assembly;
when the third abutting portion abuts against the valve shaft assembly and the first valve element abutting portion abuts against the valve shaft, the second abutting portion and the second valve element abutting portion do not abut against each other;
the valve seat part comprises a valve port, and the valve core can prop against the valve port;
the utility model provides an electrically operated valve when third butt portion offsets with the valve shaft subassembly, first case butt portion offsets with the valve shaft butt portion, and second butt portion and second case butt portion do not offset, and the case can not receive the elastic load of elastic component, can reduce the case and the impact force of valve port contact instant case to the valve port.
[ description of the drawings ]
FIG. 1 is a cross-sectional view of an electrically operated valve of the present invention in a fully closed state;
FIG. 2 is a schematic view of the structure of the valve seat member of the electric valve of the present invention;
FIG. 3 is a schematic view of the rotor components and a partial enlarged view thereof of the electrically operated valve of the present invention in a fully closed state;
FIG. 4 is a cross-sectional view of the valve body and a partial enlarged view thereof from the time the electric valve of the present invention is opened to the time the valve spool just does not bear the spring force of the valve spool spring;
FIG. 5 is a cross-sectional view of the valve body of the electric valve of the present invention, with the head of the valve body just out of contact with the valve port, and an enlarged view of a portion thereof;
FIG. 6 is a cross-sectional view of the valve body of the electric valve of the present invention when opened to a maximum opening degree, and a partially enlarged view thereof;
fig. 7 is a cross-sectional view of a valve body when an electric valve of a second embodiment of the present invention is opened to a maximum opening degree, and a partially enlarged view thereof;
fig. 8 is a cross-sectional view of a valve body when an electric valve of a third embodiment of the present invention is opened to a maximum opening degree, and a partially enlarged view thereof;
fig. 9 is a cross-sectional view of a valve body when an electric valve of a fourth embodiment of the present invention is opened to a maximum opening degree, and a partially enlarged view thereof;
fig. 10 is a cross-sectional view of a valve body when an electric valve of a fifth embodiment of the present invention is opened to a maximum opening degree, and a partially enlarged view thereof;
fig. 11 is a cross-sectional view of an electrically operated valve in the background art.
The following reference numerals are included in fig. 1-10:
10a valve seat member; 101 a valve seat; 102, a nut; 103 a first connection pipe section; 104 a second nozzle portion; 10a valve port; 10b an internal thread; 10c fixing a stop; 10d a first access passage; 10e second access channel; a 20 spool rotor assembly; 201a valve shaft assembly; 2011 valve shaft; 2012 bushings; 20121 liner aperture portion; 2013 valve shaft body portion; 2014 a barrel; 20141 barrel abutment; 201411 a cylindrical member through hole; 2015 valve shaft inner wall portion; 20151 first valve shaft inner wall portion; 20152 step; 20153 second valve shaft inner wall portion; 20154 valve shaft abutment; 20155 third valve shaft inner wall portion; 2016 outer edge portion; 20161 a first outer edge portion; 20162 a second peripheral portion; 201a an external thread portion; 201b movable stopper; 201c a rotor fixing portion; 202 valve element; 2021 spool body; 2022 spool sleeve; 20221 spool sleeve hole portion; 202a valve core head; 202b a first spool abutment; 202c a second spool abutment; 203 a rotor; 204 springs; 206 an abutment member; 206a first abutment; 206b a second abutment; 206c a third abutment; 2061 a gasket member; 2062 abutting a shelf; 20621 against the top of the rack; 20622 against the side of the shelf; 20623 abutting the shelf hole portion; 208 a second elastic member; 20a spring abutment; 30 shells; 40 coils.
[ detailed description ] of the invention
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 6, fig. 1 is a cross-sectional view of the electric valve of the present invention in a fully closed state; FIG. 2 is a schematic view of the structure of the valve seat member of the electric valve of the present invention; FIG. 3 is a schematic view of the rotor components and a partial enlarged view thereof of the electrically operated valve of the present invention in a fully closed state; FIG. 4 is a cross-sectional view of the valve body and a partial enlarged view thereof when the electric valve of the present invention is opened to a position where the valve core just does not bear the spring force of the valve core spring; FIG. 5 is a cross-sectional view of the valve body of the electric valve of the present invention, with the head of the valve body just out of contact with the valve port, and an enlarged view of a portion thereof; FIG. 6 is a cross-sectional view of the valve body of the electric valve of the present invention when opened to a maximum opening degree, and a partially enlarged view thereof;
referring to fig. 1 specifically, fig. 1 is a cross-sectional view of a first embodiment of an electrically operated valve according to the present invention, and referring to fig. 2 and 3, the electrically operated valve according to the present invention includes a valve body and a coil 40, wherein the coil 40 is sleeved on the valve body. The valve body includes a valve core rotor assembly 20 (shown in fig. 3), a valve seat member 10 (shown in fig. 2), and a housing 30.
The housing 30 is a thin-walled member having a shell shape, and the lower end opening side of the housing 30 is hermetically welded to the valve seat member 10, thereby forming a housing chamber that can house the upper half of the nut 102 and the main body portion of the valve core rotor assembly 20.
The coil 40 of the electric valve is connected to a drive controller, and after the drive controller is energized, a pulse drive signal is sent to the stator coil 40, and the stator coil 40 generates a varying magnetic field, so as to drive the valve core rotor assembly 20 of the electric valve to rotate in the forward or reverse direction. The valve core rotor assembly 20 includes a valve shaft assembly 201, in this embodiment, the valve shaft assembly 201 includes a valve shaft 2011, an external thread portion 201a is disposed at a position substantially below the valve shaft 2011, the valve seat member 10 includes a nut 102, an internal thread portion 10b is disposed at an inner hole portion of the nut 102, the valve shaft 2011 is in threaded engagement with the nut 102, and the valve shaft 2011 can perform displacement movement along an axial direction while the valve core rotor assembly 20 rotates, so as to drive the valve core 202 to implement opening and closing actions of the valve port 10 a.
Referring to fig. 2, the valve seat member 10 has a valve port 10a, and a first inlet/outlet passage 10d and a second inlet/outlet passage 10e, the valve port 10a is capable of communicating with the first inlet/outlet passage 10d and the second inlet/outlet passage 10e to allow a fluid medium (for example, a refrigerant) to pass therethrough, a through hole penetrating up and down is provided at a substantially central position of the valve seat member 10, an internal thread 10b is provided in the through hole, the valve seat member 10 includes a nut 102, the nut 102 includes a through hole, an internal thread 10b is provided at an inner edge of the through hole of the nut 102, the valve seat member 10 further includes a valve seat 101, a portion of the nut 102 is located in the valve seat 101, the nut 102 is fixedly connected to the valve seat 101 (for example, a manner of integrally injection molding a connecting body as an insert with the nut 102, and then fixedly connecting the connecting body with the valve seat 101 by welding or press-fitting the nut 102, or a manner of fixedly connecting the connecting body as an insert with the nut 102 and the welded nut 101 is provided in the present embodiment, the valve seat member and the nut 102 may be integrally injection molded. The valve seat 101 is integrally formed with the valve port 10a (of course, the valve port 10a may be formed in another member, and the member is fixedly connected to the valve seat 10 a), and in this embodiment, the valve seat 101 is fixedly connected to the first pipe connection portion 103 and the second pipe connection portion 104, and the first pipe connection portion 103 and the second pipe connection portion 104 are used as inflow or outflow passages of the fluid medium of the electric valve, and are generally connected to a system pipe when the electric valve is installed in a refrigerating or heating system such as an air conditioner.
In the present embodiment, the first connection pipe 103 and the second connection pipe 104 are welded to the valve seat 101, but the first connection pipe 103 and the second connection pipe 104 may be directly provided to the valve seat 101 without providing the first connection pipe 103 and the second connection pipe 104, or the first connection pipe 103 or the second connection pipe 104 may be flange-sealed, for example, when the electric valve is applied to an automobile air conditioner, a heat pump, or the like, and quick maintenance is required. In the present embodiment, the first and second connection pipe portions 103 and 104 are exemplified.
Referring to fig. 3, the valve core rotor assembly 20 further includes a rotor 203 and a valve core 202, the rotor 203 has a magnetic pole in a circumferential direction, an external thread portion 201a is disposed at a lower outer edge section of the valve shaft 2011, the valve core 202 is inserted into a central through hole of the valve shaft 2011, in addition, the valve core rotor assembly 20 further includes an elastic member 204 disposed in the central through hole of the valve shaft 2011, and the valve shaft assembly 201 further includes a bushing 2012 fixedly connected to an upper end of the valve shaft 2011.
Referring to fig. 1, the electric valve provided in this embodiment includes a spring abutment portion 20a, where the spring abutment portion 20a is a portion of the valve shaft assembly 201 that abuts against an upper end portion of the elastic member 204 (including directly abutting against or indirectly abutting against, for example, when a gasket, a washer, or other components are disposed between the bushing 2012 and the elastic member 204, the bushing 2012 still receives an elastic load of the elastic member 204, and the valve shaft assembly 201 still abuts against the elastic member 204), and in this embodiment, the bushing 2012 abuts against the elastic member 204, and the bushing 2012 includes the spring abutment portion 20a.
Referring to fig. 1 and 2, the nut 102 of the valve seat member 10 is provided with a hole penetrating vertically at a substantially central position, a female screw portion 10b (which may be referred to as a fixed screw portion) is provided at a substantially central lower portion of the penetrating hole, and the female screw portion 10b and a male screw portion 201a (which may be referred to as a movable screw portion) provided at a substantially lower position of the valve shaft 2011 are combined to constitute a screw feed mechanism (screw pair) of the present electric valve. The nut 102 protrudes from the annular base body and is provided with a fixed stop portion 10c which cooperates with a movable stop portion 201b provided on the valve core rotor assembly 20 to form a stop mechanism at the lower end of the stroke of the present electric valve, that is, when the valve core rotor assembly 20 moves downward to a certain extent relative to the valve seat member 10, the movable stop portion 201b can abut against the fixed stop portion 10c to limit the rotation of the valve core rotor assembly 20 relative to the valve seat member 10, thereby limiting the continued downward movement of the valve core rotor assembly 20 in the axial direction, and thus controlling the stroke of the downward movement of the valve core rotor assembly 20.
Referring to fig. 1, a coil 40 of an electric valve receives a driving pulse signal to generate a variable magnetic field, a rotor 203 in a valve body is excited to rotate, in this embodiment, a valve shaft 2011 is fixedly connected with the rotor 203, so that the valve shaft 2011 can synchronously rotate along with the rotor 203, and a screw feeding mechanism of the valve shaft 2011 and a nut 102 can convert the rotation motion of the rotor 203 into axial movement, so as to drive a valve element 202 to enable a valve element head 202a of the valve element to approach or separate from a valve port 10a, thereby realizing a linear switch adjusting function of flow of the electric valve.
Fig. 3 is a schematic structural view of the valve core rotor assembly of the electric valve of the present invention, and an enlarged partial cross-sectional view thereof. The spool rotor assembly 20 of the present electric valve includes a rotor 203 having magnetic poles in the circumferential direction, a valve shaft 2011 fixedly connected to the rotor 203, a spool 202 inserted into a center through hole of the valve shaft 2011, an elastic member 204 provided in the center through hole of the valve shaft 2011, and a bush 2012 fixedly connected to the valve shaft 2011 (substantially upper end position).
Referring to fig. 3, in the present embodiment, the valve shaft 2011 includes a hole penetrating up and down, the inner wall of the through hole forms a valve shaft inner wall portion 2015, the inner diameter of the valve shaft inner wall portion 2015 is not the same in the axial direction of the valve shaft 2011, specifically, the valve shaft inner wall portion 2015 includes a first valve shaft inner wall portion 20151, a stepped portion 20152, a second valve shaft inner wall portion 20153, a valve shaft abutment portion 20154, and a third valve shaft inner wall portion 20155, the first valve shaft inner wall portion 20151 is located above the second valve shaft inner wall portion 20153 in the axial direction of the electric valve, the second valve shaft inner wall portion 20153 is located above the third valve shaft inner wall portion 20155, and in the plane in which the cross section of the valve shaft 2011 is located, the orthographic projection of the first valve shaft inner wall portion 20151 along the plane (the orthographic projection is a closed line or torus) is located outside the orthographic projection of the second valve shaft inner wall portion 20153 along the plane (the orthographic projection is the closed line or torus), the second valve shaft inner wall portion 20153 is located outside the orthographic projection (the orthographic projection is a closed line or a torus) of the third valve shaft inner wall portion 20155 along the plane, and generally, for the convenience of processing and manufacturing, the cross sections of the first valve shaft inner wall portion 20151, the second valve shaft inner wall portion 20153, and the third valve shaft inner wall portion 20155 are all circular, and at this time, the diameter of the first valve shaft inner wall portion 20151 is larger than the diameter of the second valve shaft inner wall portion 20153, and the diameter of the second valve shaft inner wall portion 20153 is larger than the diameter of the third valve shaft inner wall portion 20155, and in this embodiment, the first valve shaft inner wall portion 20151, the second valve shaft inner wall portion 20153, and the third valve shaft inner wall portion 20155 are all substantially equal in diameter in the height direction, so that the first valve shaft inner wall portion 20151, the orthographic projection of the second valve shaft inner wall portion 20153 and the third valve shaft inner wall portion 20155 along a plane in which the cross section of the valve shaft 2011 is located is a circle.
With continued reference to fig. 3, the stepped portion 20152 and the valve shaft abutting portion 20154 have an extending distance in the horizontal direction, in this embodiment, the stepped portion 20152 is higher than the valve shaft abutting portion 20154, the outer edge of the stepped portion 20152 intersects the first valve shaft inner wall portion 20151, the inner edge intersects the second valve shaft inner wall portion 20153, the outer edge of the valve shaft abutting portion 20154 intersects the second valve shaft inner wall portion 20153, the inner edge intersects the third valve shaft inner wall portion 20155, when the cross sections of the first valve shaft inner wall portion 20151, the second valve shaft inner wall portion 20153 and the third valve shaft inner wall portion 20155 are all circular, the orthographic projection of the stepped portion 20152 and the valve shaft abutting portion 20154 along the plane where the cross section of the valve shaft 2011 is located is circular, in this embodiment, the stepped portion 20152 and the valve shaft abutting portion 20154 are not completely planar, but, for example, in a direction away from the center of the valve shaft abutting portion 4, the stepped portion 20152 and the valve shaft abutting portion 20154 may gradually extend upward or downward (the stepped portion 20152 and the valve shaft 20154 may be understood to extend in the horizontal direction 20152).
Of course, the above description has been made of the structure of the first valve shaft inner wall portion 20151, the stepped portion 20152, the second valve shaft inner wall portion 20153, the valve shaft abutting portion 20154, and the third valve shaft inner wall portion 20155, but the first valve shaft inner wall portion 20151, the stepped portion 20152, the second valve shaft inner wall portion 20153, the valve shaft abutting portion 20154, and the third valve shaft inner wall portion 20155 of the present invention are not limited to the above structure, and it is only necessary to satisfy that one of the stepped portion 20152 having an extending distance in the horizontal direction between the first valve shaft inner wall portion 20151 and the second valve shaft inner wall portion 20153, and one of the valve shaft abutting portion 20154 having an extending distance in the horizontal direction between the second valve shaft inner wall portion 20153 and the third valve shaft inner wall portion 20155, and the valve shaft abutting portion 20154 may abut the valve element 202.
Referring to fig. 1, in this embodiment, the valve shaft 2011 includes an outer edge 2016, specifically, the outer edge 2016 includes a first outer edge 20161 and a second outer edge 20162, the first outer edge 20161 is located above the second outer edge 20162, in a plane where a cross section of the valve shaft 2011 is located, an outer edge of an orthographic projection of the first outer edge 20161 along the plane is located outside an orthographic projection of the second outer edge 20162 along the plane, for convenience of processing, a cross section of the first outer edge 20161 and a cross section of the second outer edge 20162 may be set to be circular, a rotor fixing portion 201c is disposed at a portion of the valve shaft 2011 where the first outer edge 20161 is located, the rotor 203 and the rotor fixing portion 201c may be fixed by adopting direct or indirect welding, riveting, injection molding connection using a magnetic plastic material, bonding using glue, and the like. When the rotor 203 and the valve shaft 2011 are directly connected, the valve shaft 2011 may be injection-molded and connected with the magnetic plastic material as an insert.
The valve shaft 2011 where the second outer edge 20162 is located is provided with an external screw thread 201a, and the external screw thread 201a (also referred to as a movable screw thread) and an internal screw thread 10b (also referred to as a fixed screw thread) provided in the inner hole of the nut 102 are combined with the external screw thread 201a to constitute a screw feed mechanism (screw pair) of the present motor valve.
Referring to fig. 3, the valve shaft assembly 201 further includes a bushing 2012, in this embodiment, a portion of the bushing 2012 is located in the first valve shaft inner wall 20151, and a portion of the bushing 2012 is located above the first valve shaft inner wall 20151, the bushing 2012 and the valve shaft 2011 may be fixedly connected by press fitting or welding, etc., and the bushing 2012 further includes a bushing hole 20121, where the bushing hole 20121 penetrates through the upper and lower surfaces of the bushing 2012, so as to balance the pressure inside and outside the valve shaft assembly 201.
Referring to fig. 1, the electric valve further includes a second elastic member 208 in this embodiment, and the second elastic member 208 is a spring in this embodiment. And the second elastic member 208 is sleeved on the portion of the bushing 2012 higher than the inner wall 20151 of the first valve shaft, and the upper end portion of the second elastic member 208 is higher than the upper end of the bushing 2012 under the condition that the second elastic member 208 is not subjected to external force.
In the present embodiment, the valve element 202 is provided to penetrate the valve shaft assembly 201 (a portion of the valve element 202 is located in the valve shaft inner wall portion 2015), and the valve element 202 has a stepped shaft-like structure including a valve element head portion 202a, the valve element head portion 202a being located at a substantially lower end position of the valve element 202, a tip end shape of the valve element head portion 202a being related to a flow rate adjustment curve required for the electric valve, the valve element 202 further including a first valve element abutment portion 202b, the first valve element abutment portion 202b being located at a substantially upper end position of the valve element 202. The first valve element contact portion 202b of the valve element 202 can contact the valve shaft contact portion 20154, and the valve element head portion 202a thereof is positioned below the third valve shaft inner wall portion 20155. In the plane in which the cross section of the valve element 202 is located, there is an overlapping region between the orthographic projection of the first valve element abutment portion 202b along the plane and the orthographic projection of the valve shaft abutment portion 20154 along the plane, and therefore, the first valve element abutment portion 202b can abut against the valve shaft abutment portion 20154 (of course, when a gasket or the like is provided between the valve shaft abutment portion 20154 and the first valve element abutment portion 202b so as not to abut directly against the same, the projection relationship between the first valve element abutment portion 202b and the valve shaft abutment portion 20154 may not satisfy the above relationship), in this embodiment, both the outer edge of the first valve element abutment portion 202b and the inner edge of the second valve shaft inner wall portion 20153 are circular, and the diameter of the first valve element abutment portion 202b is slightly smaller than the diameter of the valve shaft second valve shaft inner wall portion 20153, and the diameter of the first valve element abutment portion 202b is larger than the diameter of the third valve shaft inner wall portion 20155, and therefore the valve element 202 can be supported on the valve shaft abutment portion 2011 4.
In addition, the valve core rotor assembly 20 of the electric valve of the present embodiment further includes an elastic member 204, and the elastic member 204 may be designed as a cylindrical coil spring, and in the present embodiment, the elastic member 204 is located in the first valve shaft inner wall portion 20151.
Referring to fig. 3, the electric valve provided in the present application further includes an abutment member 206, where the abutment member 206 includes a first abutment portion 206a, a lower end portion of the elastic element 204 abuts against the first abutment portion 206a, the abutment member 206 further includes a second abutment portion 206b, the second abutment portion 206b can abut against a second valve element abutment portion 202c (to be mentioned later), the abutment member 206 further includes a third abutment portion 206c, and the third abutment portion 206c can abut against the valve shaft assembly 201.
Specifically, the valve element 202 further includes a second valve element abutment portion 202c, the second valve element abutment portion 202c being located substantially near the upper end position of the valve element 202, the second valve element abutment portion 202c being located above a valve element abutment portion 202b in the axial direction of the electric valve.
Referring to fig. 4, the abutment member 206 includes a washer member 2061, and the washer member 2061 is capable of abutting against the stepped portion 20152, specifically, in a plane in which a cross section of the electric valve is located, there is an overlapping area of an orthographic projection of the washer member 2061 along the plane and an orthographic projection of the stepped portion 20152 along the plane, and therefore, the washer member 2061 thereof is capable of abutting against the stepped portion 20152 (of course, when 2 or more washer members 2061 are provided between the washer member 2061 and the stepped portion 20152, it is not necessarily required that each of the washer members 2061 and the stepped portion 20152 satisfy the above relationship), and in this embodiment, both an outer edge of the washer member 2061 and an inner edge of the stepped portion 20152 are circular, and an outer diameter of the washer member 2061 is slightly smaller than a diameter of the first valve shaft inner wall portion 20151 and an outer diameter of the washer member 2061 is larger than a diameter of the second valve shaft inner wall portion 20153.
Referring to fig. 3, the spool rotor assembly 20 of the electric valve of the present embodiment further includes an elastic member 204, where the elastic member 204 may be designed as a cylindrical coil spring, the elastic member 204 is located in the first valve shaft inner wall 20151, the upper end of the elastic member 204 abuts against the bushing 2012 (including directly abutting against or indirectly abutting against, for example, when a gasket or other component is disposed between the bushing 2012 and the elastic member 204, the elastic load of the elastic member 204 may still be transferred to the bushing 2012 through the gasket or other component, and the elastic member 204 abuts against the bushing 2012 indirectly), and the bushing 2012 includes a spring abutting portion 20a, and the lower end of the elastic member 204 abuts against the upper end face of the gasket component 206.
Referring to fig. 4, in the present embodiment, the gasket member 2061 includes the first abutting portion 206a (a portion of the gasket member 2061 abutting against the elastic member 204), and the gasket member 2061 includes the third abutting portion 206c (a portion capable of abutting against the stepped portion 20152).
Referring to fig. 3, the electric valve is in a fully closed state (i.e., the state when the spool rotor assembly 20 is at the lowest end of its travel), and, as shown in fig. 1, the spool head 202a abuts against and is pressed against the valve port 10a, the elastic member 204 is in a compressed state, an axial distance exists between the first spool abutment 202b and the valve shaft abutment 20154, and an axial distance also exists between the third abutment 206c and the stepped portion 20152.
Fig. 4 is a cross-sectional view of the valve body and its enlarged view when the valve body is opened to a state where the valve body does not just bear the spring force of the valve body spring. The position of the valve core rotor assembly 20 in fig. 4 is opened a distance upward as compared to the rotor position when the electric valve is fully closed in fig. 1, while the valve core head 21a still abuts against the valve port 10 a. With the rotor position shown in fig. 4 as a critical point, if the valve core rotor assembly 20 continues to open upward, the elastic force of the elastic member 204 will be carried by the stepped portion 20152 through the transmission of the gasket member 2061, and the valve core 202 will no longer receive the elastic load of the elastic member 204. In this specification, taking the case that the pressure of the first inlet/outlet channel 10d is greater than that of the second inlet/outlet channel 10e as an example, there is a pressure difference on both sides of the valve port 10a, so the valve element 202 always receives a pressure difference force generated by the pressure difference, the valve element 202 shown in fig. 4 receives the pressure difference force and self gravity, and the valve element head 202a thereof abuts against the valve port 10 a. The valve shaft abutment 20154 is spaced from the first valve element abutment 202b by a distance h-k, where h-k > 0.
Fig. 5 is a cross-sectional view of the valve body of the electric valve of the present invention, and a partial enlarged view thereof, when the valve body head is opened to just not contact the valve port. The valve core rotor assembly 20 in fig. 5 is positioned such that the valve core rotor assembly 20 is opened upward by a height h-k as compared to that in fig. 4, and the valve core head 202a is just in a critical state of contact with and non-contact with the valve port 10 a. The valve element 202 is pressed against the valve shaft abutting portion 20154 by the differential pressure force at both ends of the valve port 10a and its own gravity, and the elastic force of the elastic member 204 is transmitted by the washer member 2061 and is supported by the stepped portion 20152. The distance of the second valve element abutment 202c from the second abutment 206b is h-k, and h-k > 0.
With continued reference to fig. 5, the valve core 202 of the present embodiment includes a valve core main body portion 2021 and a valve core sleeve 2022, the valve core sleeve 2022 includes a valve core sleeve hole portion 20221, the valve core sleeve hole portion 20221 penetrates through the upper and lower surfaces of the valve core sleeve 2022, the upper end of the valve core main body portion 2021 penetrates through the valve core sleeve hole portion 20221, and the valve core main body portion 2021 and the valve core sleeve 2022 may be fixedly connected by press-fitting, welding, bonding or the like. In the present embodiment, the diameter of the poppet head 202a is set larger than the diameter of the third valve shaft inner wall portion 20155. When the diameter of the valve element head 202a is larger than the diameter of the third valve shaft inner wall portion 20155, the valve element 202 is inserted into the center through hole of the valve shaft 2011 from bottom to top, and then the valve element sleeve 2022 is fitted and fixed to the valve element main body portion 2021 from top to bottom, and the valve element sleeve 2022 can abut against the valve shaft abutting portion 20152 or the gasket member 2061, and in this embodiment, the valve element sleeve 2022 includes the first valve element abutting portion 202b and the second valve element abutting portion 202c.
Of course, the valve core sleeve hole portion 20221 may also adopt a blind hole form, that is, the valve core main body portion 2021 is fixedly connected with the valve core sleeve 2022, but the valve core main body portion 2021 does not pass through from above the valve core sleeve hole portion 20221, that is, the valve core sleeve hole portion 20221 is not limited to a through hole form; alternatively, the cartridge pocket 20221 may be in the form of a through hole, but the cartridge body 2021 does not pass through the top of the cartridge pocket 20221.
With continued reference to fig. 5, when the third abutment portion 206c abuts against the stepped portion 20152 and the first spool abutment portion 202b abuts against the valve shaft abutment portion 20154, the second spool abutment portion 202c does not abut against the washer member 2061, and at this time, the second spool abutment portion 202c cannot receive the elastic load of the elastic member 204 through the washer member 2061, that is, the spool 202 does not receive the elastic load of the elastic member 204, and at this time, the spool 202 is suspended from the valve shaft abutment portion 20154. At this time, a predetermined distance h-k exists between the second valve element abutment portion 206b (a portion that can abut against the second valve element abutment portion 202 c) and the second valve element abutment portion 202c.
Fig. 6 is a cross-sectional view of the valve body when the electric valve of the present invention is opened to the maximum opening degree, and a partial enlarged view thereof. The spool rotor assembly 20 of the electric valve is opened from the position shown in fig. 5 to the position shown in fig. 6, the spool 202 thereof is always acted upon by the differential pressure force across the valve port 10a and its own gravity, the first spool abutment portion 202b thereof is always abutted against the valve shaft abutment portion 20154, and the elastic force of the elastic member 204 is always borne by the stepped portion 20152 through the transmission of the washer member 2061. When the rotor member 20 is in the position shown in fig. 6, the rotor member 20 is opened to the maximum opening position in the normal operation state thereof, and at this time, the second elastic member 208 at the upper end of the valve core rotor assembly 20 is compressed, and the valve core rotor assembly 20 is subjected to the downward elastic load of the second elastic member 208. If the valve core rotor assembly 20 continues to be opened upward, an excessive opening state (excessive opening: that is, a state when the valve core rotor assembly 20 is opened upward beyond a prescribed upper limit stroke) of the valve core rotor assembly 20 occurs, the male screw 201a of the valve shaft assembly 201 and the female screw 10b of the nut 102 are disengaged, and after the screw pair is disengaged, if the coil 40 drives the valve core rotor assembly 20 in the closing direction, the screw pair is re-screwed when the valve shaft assembly 201 is rotated downward by the downward elastic load of the second elastic member 208.
Referring to fig. 1, 4, 5 and 6, the valve core rotor assembly 20 is not loaded by the spring force of the elastic member 204 when it is opened upward from the opening state of fig. 4 or when it is closed from the fully opened state of fig. 6 to the state of fig. 4 from the fully closed state to the fully opened state of fig. 4. In particular, when the valve element 202 is suspended from the valve shaft assembly 201 at the moment when the valve element head 202a contacts the valve element 10a, the valve element 202 is not subjected to the elastic load of the elastic member 204, so that the impact force of the valve element 202 at the moment of contact can be reduced, the abrasion of the contact part can be reduced, the service life of the electric valve can be prolonged, and during the period, the friction force of the contact part of the valve element 10a and the valve element 202 (the friction force is related to the pressure of the valve element 202 to the valve element 10 a) can be reduced, thereby reducing the abrasion of the valve element 202 and the valve element 10 b.
Referring to fig. 3, in the present embodiment, the functional effect is achieved by the fact that the height h between the stepped portion 20152 and the valve shaft abutment portion 20154 is greater than the height k between the first valve element abutment portion 202b and the second valve element abutment portion 202c, that is, h > k, in the case where no other member is provided such that some two members (the valve shaft assembly 201 and the gasket member 2061, and the valve element 202 and the valve shaft assembly 201) are indirectly abutted against each other. In FIGS. 4, 5 and 6, h > k, in fact h-k > 0, is preferably greater than 0 and less than 0.3mm because the valve has a certain opening stroke.
Referring to fig. 6, in the present embodiment, the gasket member 2061 further includes a gasket hole portion 20611, the gasket hole portion 20611 penetrating the upper and lower surfaces of the gasket 2061, the upper end of the valve element 202 penetrating the gasket hole portion 20611, and the upper end of the valve element 202 penetrating the elastic member 204.
Through the arrangement, when the lower end of the elastic element 204 is about to radially deflect, the lower end of the elastic element 204 can be limited by the valve element 202, so that the radial deflection of the elastic element 204 is reduced, the elastic element 204 is more stable in the valve shaft assembly 201, and the service life of the electric valve is prolonged.
Fig. 7 is a sectional view of a valve body when the second embodiment of the electric valve of the present invention is opened to the maximum opening degree, and a partial enlarged view thereof. Compared with the first embodiment in fig. 6 of the same opening state, the present embodiment differs mainly in that: the washer member 2061 is in a disc-like state, i.e., no washer hole 20611 is provided in the middle; when the valve element 202 moves upward with respect to the valve shaft assembly 201, the uppermost end of the valve element main body portion 2021 abuts against the gasket member 2061, and at this time, the uppermost end of the valve element main body portion 2021 is the second valve element abutment portion 202c; in the present embodiment, it is still satisfied that the height h between the stepped portion 20152 and the valve shaft abutment portion 20154 is greater than the height k between the first spool abutment portion 202b and the second spool abutment portion 202c, i.e., h > k.
Fig. 8 is a cross-sectional view of a valve body when the third embodiment of the electric valve of the present invention is opened to the maximum opening degree, and a partial enlarged view thereof. Compared with the first embodiment in fig. 6 in the same opening state, the difference in this embodiment is mainly that the valve element 202 is of an integral structure, that is, the valve element main body portion 2021 and the valve element sleeve 2022 are integrally formed, the valve element 202 is inserted from top to bottom from the valve shaft inner wall portion 2015 of the valve shaft assembly 201, and in this embodiment, the height h between the stepped portion 20152 and the valve shaft abutment portion 20154 is still satisfied to be greater than the height k between the first valve element abutment portion 202b and the second valve element abutment portion 202c, that is, h > k.
Fig. 9 is a cross-sectional view of a valve body when the fourth embodiment of the electric valve of the present invention is opened to the maximum opening degree, and a partial enlarged view thereof.
The abutment member 206 provided in this embodiment includes an abutment frame 2062, the abutment frame 2062 being capable of abutting against the valve shaft abutment portion 20154, the abutment frame 2062 having a substantially cylindrical structure including an abutment frame top 20621 at the top and an abutment frame side 20622 extending substantially downward along the circumferential edge of the abutment frame top 20621, the abutment frame side 20622 being hollow.
In addition, in the present embodiment, the stepped portion 2015 may not be provided in the valve shaft inner wall portion 2015, specifically, when the electric valve is in the state of fig. 9, the first valve element abutment portion 202b abuts against the valve shaft abutment portion 20154, the abutment frame 2062 is fitted to the valve element 202, the lower end of the abutment frame side portion 20622 of the abutment frame 2062 abuts against the valve shaft abutment portion 20154 (therefore, the stepped portion 2015 may not be provided in the valve shaft inner wall portion 2015, the function of the stepped portion 20152 is realized by the valve shaft abutment portion 20154), the abutment frame 2062 includes the third abutment portion 206c, the abutment frame top portion 20621 abuts against the elastic member 204, the abutment frame 2062 includes the first abutment portion 206a, the distance from the first valve element abutment portion 202b to the second valve element abutment portion 202c is k, the distance from the second abutment portion 20154 to the second valve element 206b is h, and the second abutment portion 206b has a distance from the valve shaft to the second valve element 202c.
When the valve element 202 rises by a distance of h-k with respect to the valve shaft assembly 201, the lower end surface of the abutment frame top 20621 of the abutment frame 2062 contacts the second valve element abutment portion 202c, the abutment frame top 20621 includes the second abutment portion 206b, the first valve element abutment portion 202b does not abut against the valve shaft abutment portion 20154, and when the valve element 202 rises further with respect to the valve shaft assembly 201, the second abutment portion 206b of the abutment frame 2062 abuts against the second valve element abutment portion 202c, the valve element 202 receives an elastic load of the elastic member 204, and at this time, the elastic force of the elastic member 204 can be transmitted to the valve port 10a through the valve element 202, thereby generating a pressing force between the valve element 202 and the valve port 10 a.
In the present embodiment, the abutting frame 2062 further includes an abutting frame hole 20623, the abutting frame hole 20623 penetrating the upper and lower surfaces of the abutting frame top 20621, the upper end of the valve element 202 penetrating the abutting frame hole 20623, and the upper end of the valve element 202 penetrating the elastic member 204.
Through the arrangement, when the elastic piece 204 is about to radially deflect, the elastic piece 204 can be limited by the valve core 202, so that the radial deflection of the elastic piece 204 is reduced, the elastic piece 204 is more stable in the electric valve, and the service life of the electric valve is prolonged.
Of course, although the step portion 20152 may not be provided in the embodiment, the step portion 20152 may not necessarily be provided in the present application, and for example, the step portion 20152 may be provided in the valve shaft inner wall portion 2015, and the step portion 20152 may abut against the lower end of the abutment frame side portion 20622, whereby the technical effects of the present application may be achieved.
Fig. 10 is a cross-sectional view of a valve body when the fifth embodiment of the electric valve of the present invention is opened to the maximum opening degree, and a partially enlarged view thereof. The configuration of the valve shaft assembly 201 is divided and integrated as compared with the fourth embodiment in fig. 9 in the same opening state, which corresponds to the fifth embodiment.
In this embodiment, the valve shaft assembly 201 includes a valve shaft main body 2013 and a cylindrical member 2014, the valve shaft main body 2013 has a through hole penetrating up and down, the valve shaft main body 2013 is provided with an external screw thread portion 201a (also referred to as a movable screw thread portion), the valve shaft main body 2013 is fixedly connected to the cylindrical member 2014, and an inner wall region of the fixedly connected central through hole forms a valve shaft inner wall portion 2015, and in this embodiment, a portion of the valve shaft main body 2013 is located in the through hole of the cylindrical member 2014, however, it is also possible to adopt a form in which the valve shaft main body 2013 does not enter the through hole of the cylindrical member 2014, and the valve shaft main body 2013 is fixed to a lower end of the cylindrical member 2014. The tubular member 2014 is substantially hollow and cylindrical, the tubular member 2014 includes a tubular member abutment portion 20141, the tubular member abutment portion 20141 abuts against the elastic member 204, the tubular member abutment portion 20141 includes a spring abutment portion 20a, and a tubular member through hole 201411 is provided at a substantially central position of the tubular member abutment portion 20141. The upper end surface of the valve shaft main body 2013 forms a valve shaft abutment portion 20154, and the elastic member 204 is accommodated in a space defined by the tubular member 2014 and the valve shaft main body 2013.
Compared with the fourth embodiment in fig. 9, this embodiment is equivalent to the fourth embodiment in that the valve shaft assembly 201 is newly divided, integrated and changed in structure, and the functions of the geometrical corresponding parts after assembly are the same. The structural scheme of other parts of the embodiment is the same as or similar to that of the first embodiment.
It is to be understood that the present embodiment is capable of performing conventional separation, integration, etc. on some parts of the electric valve, but the functions of the geometric corresponding parts of the assembled electric valve are basically the same, and it is still within the scope of the present invention, for example, the structure of the valve core 202 in fig. 8 is changed to a certain extent relative to the structure of the valve core 202 in the second embodiment in fig. 7, but the functions of the geometric corresponding parts of the electric valve are not substantially changed, and these structures with modified combinations are also included in the scope of the patent claims of the present invention.
It should be noted that in the embodiment shown in the present specification, a gasket or a washer may be added to the lower end portion of the elastic member 204, or a gasket may be provided between the first valve element abutment portion 202b and the valve shaft abutment portion 20154, or a gasket or a washer may be added to the upper end portion of the elastic member 204 (the central through holes of the gasket and the washer may be in the form of closed holes or may be in the form of openings), which does not affect the core content of the present application, and two members of the present application may abut against each other, including two members directly abutting against each other or one member abutting against each other through other members (not limited to the gasket or the washer).
In addition, in order to further reduce the friction resistance of the relative rotation of the gasket or the washer, the upper surface and the lower surface of the gasket or the washer which are subjected to the rotary friction fit can be coated or plated with a coating (such as a coating containing polytetrafluoroethylene, graphite or molybdenum disulfide component) with a lubricating and wear-resisting function, so that the service life of the electric valve is prolonged.
Based on the above embodiments, the core structure of the present invention is utilized to make some adaptive changes in adding antifriction washers or gaskets, which all fall within the scope of the patent claims of the present invention.
It should be noted that, in the above-described forming manner of the valve port 10a and whether the connection pipe is provided, various schemes are provided, and "ok" is used in the specification, so it should be understood that "ok" of the present application is not to be interpreted as "necessary".
It should be noted that, in this embodiment, terms of up, down, left, right and other directions are all introduced for convenience of description with reference to the drawings in the specification; and the ordinal numbers "first," "second," etc., in the names of the components are also introduced for descriptive convenience and are not meant to imply any limitation on any order of the components.
The above describes the electrically operated valve provided by the present invention in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the invention. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (7)
1. The electric valve is characterized by comprising a valve body and a coil (40), wherein the coil (40) is sleeved on the valve body, the valve body comprises a valve seat component (10) and a valve core rotor component (20), and the valve core rotor component (20) comprises a valve shaft component (201), a valve core (202), an elastic piece (204) and an abutting component (206); the valve shaft assembly (201) is provided with an external thread part (201 a), the valve seat component (10) comprises a nut (102), the nut (102) is provided with an internal thread part (10 b), and the valve shaft assembly (201) is in threaded fit with the nut (102);
the valve shaft assembly (201) includes a valve shaft abutment (20154);
the valve element (202) comprises a first valve element abutting part (202 b) and a second valve element abutting part (202 c), the valve element (202) is arranged in the valve shaft assembly (201) in a penetrating mode, and the first valve element abutting part (202 b) can abut against the valve shaft abutting part (20154);
the upper end of the elastic member (204) abuts against the valve shaft assembly (201), the abutting component (206) comprises an abutting frame (2062), the abutting frame (2062) comprises an abutting frame top (20621) and an abutting frame side (20622), the abutting frame top (20621) comprises a first abutting portion (206 a), the lower end of the elastic member (204) abuts against the first abutting portion (206 a), the abutting frame top (20621) comprises a second abutting portion (206 b), the valve spool (202) comprises a second valve spool abutting portion (202 c), the second abutting portion (206 b) can abut against the second valve spool abutting portion (202 c), the abutting frame side (20622) comprises a third abutting portion (206 c), and the third abutting portion (206 c) can abut against the valve shaft assembly (201);
the valve seat component (10) comprises a valve port (10 a), and the valve core (202) can prop against the valve port (10 a);
when the third contact portion (206 c) contacts the valve shaft assembly (201) and the first valve element contact portion (202 b) contacts the valve shaft contact portion (20154), the second contact portion (206 b) and the second valve element contact portion (202 c) do not contact each other.
2. The electric valve according to claim 1, characterized in that the abutment frame side (20622) can abut against the valve shaft abutment (20154).
3. The electrically operated valve according to any one of claims 1 or 2, wherein the abutment frame (2062) includes an abutment frame hole portion (20623), the abutment frame hole portion (20623) penetrating upper and lower surfaces of the abutment frame top portion (20621), the spool (202) penetrating the abutment frame hole portion (20623), a portion of the spool (202) being located within the elastic member (204).
4. The electric valve according to any one of claims 1-2, characterized in that the valve cartridge (202) further comprises a cartridge body portion (2021) and a cartridge housing (2022), the cartridge housing (2022) comprises a cartridge housing hole portion (20221), a portion of the cartridge body portion (2021) is located in the cartridge housing hole portion (20221), and the cartridge body portion (2021) is fixedly connected to the cartridge housing (2022).
5. The electric valve according to claim 4, characterized in that the spool sleeve (2022) is capable of abutting against the valve shaft abutment portion (20154), the spool sleeve (2022) includes the first spool abutment portion (202 b), the spool sleeve (2022) is capable of abutting against the second abutment portion (206 b), and the spool sleeve (2022) includes the second spool abutment portion (202 c).
6. The electric valve according to claim 5, characterized in that the abutment member (206) is provided with a through hole, a portion of the spool body (2021) passing through the through hole of the abutment member (206), a portion of the spool body (2021) being located in the elastic member (204).
7. The electric valve according to claim 4, characterized in that the spool sleeve (2022) is capable of abutting against the valve shaft abutment portion (20154), the spool sleeve (2022) includes the first spool abutment portion (202 b), the spool body portion (2021) is capable of abutting against the second abutment portion (206 b), and the spool body portion (2021) includes the second spool abutment portion (202 c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2022/074464 WO2022166782A1 (en) | 2021-02-01 | 2022-01-28 | Electric valve |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110135740 | 2021-02-01 | ||
| CN2021101357406 | 2021-02-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114838147A CN114838147A (en) | 2022-08-02 |
| CN114838147B true CN114838147B (en) | 2023-08-01 |
Family
ID=82561962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110176835.2A Active CN114838147B (en) | 2021-02-01 | 2021-02-07 | Electric valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114838147B (en) |
| WO (1) | WO2022166782A1 (en) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008169910A (en) * | 2007-01-11 | 2008-07-24 | Fuji Koki Corp | Motor-operated valve |
| JP4854086B2 (en) * | 2007-05-30 | 2012-01-11 | 日本炭酸瓦斯株式会社 | Gas on / off valve |
| JP2009228689A (en) * | 2008-03-19 | 2009-10-08 | Fuji Koki Corp | Electric valve |
| CN203809802U (en) * | 2014-05-12 | 2014-09-03 | 宁波甬安医疗器械制造有限公司 | Spring full-lift safety valve |
| CN105351582A (en) * | 2015-11-19 | 2016-02-24 | 中国海洋大学 | Movable valve seat type spring loaded type relief valve |
| CN108317259B (en) * | 2017-01-18 | 2020-05-05 | 浙江三花制冷集团有限公司 | Electronic expansion valve |
| DE102017131146A1 (en) * | 2017-12-22 | 2019-06-27 | Bürkert Werke GmbH & Co. KG | Control valve assembly |
| JP2019128022A (en) * | 2018-01-25 | 2019-08-01 | 株式会社不二工機 | Motor-operated valve |
| JP2019203589A (en) * | 2018-05-25 | 2019-11-28 | 株式会社鷺宮製作所 | Electromagnetic valve and refrigeration cycle |
| CN210344303U (en) * | 2019-06-14 | 2020-04-17 | 浙江三花制冷集团有限公司 | Electric valve |
| CN212178005U (en) * | 2020-03-31 | 2020-12-18 | 杭州三花研究院有限公司 | Electric valve |
| CN111810688B (en) * | 2020-07-06 | 2024-09-17 | 浙江三尚智迪科技有限公司 | Balancing valve |
| CN112178223A (en) * | 2020-10-16 | 2021-01-05 | 浙江盾安人工环境股份有限公司 | Valve core assembly and electronic expansion valve |
-
2021
- 2021-02-07 CN CN202110176835.2A patent/CN114838147B/en active Active
-
2022
- 2022-01-28 WO PCT/CN2022/074464 patent/WO2022166782A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN114838147A (en) | 2022-08-02 |
| WO2022166782A1 (en) | 2022-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7113505B2 (en) | electric valve | |
| CN107631033B (en) | Electric valve | |
| CN111417807B (en) | Electric valve and manufacturing method thereof | |
| WO2020012827A1 (en) | Electrically operated valve | |
| CN111810653B (en) | Electric valve and refrigeration cycle system | |
| CN113748287B (en) | Electronic expansion valve | |
| CN114838185B (en) | Electric valve | |
| JP7481562B2 (en) | Motor-operated valve and refrigeration cycle system | |
| CN114838147B (en) | Electric valve | |
| JP7113537B2 (en) | electric valve | |
| CN112815134B (en) | Electric valve and refrigeration cycle system | |
| WO2019148693A1 (en) | Electric valve and manufacturing method thereof | |
| CN109812613B (en) | Electric valve | |
| WO2023005178A1 (en) | Electric valve | |
| CN115126885A (en) | Electric valve | |
| WO2022161426A1 (en) | Electric valve | |
| CN115681513A (en) | Electric valve | |
| CN116066581A (en) | Electric valve | |
| CN115681511A (en) | Electric valve | |
| CN114838179A (en) | Electric valve | |
| JP7453091B2 (en) | Electric valve and refrigeration cycle system | |
| CN116412253A (en) | Electric valve | |
| CN110094524B (en) | Electric valve | |
| CN114838178A (en) | Electric valve | |
| CN115681512A (en) | Electric valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |