CN217481489U

CN217481489U - Pump body subassembly, compressor and air conditioner

Info

Publication number: CN217481489U
Application number: CN202221106958.5U
Authority: CN
Inventors: 郑仲钦; 梁健坤; 梁家华; 张远传
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-09-23
Anticipated expiration: 2032-05-10

Abstract

The utility model provides a pump body subassembly, compressor and air conditioner, pump body subassembly wherein, including bent axle, roller, cylinder, the roller suit in on the outer periphery of bent axle and the two pass through threaded connection, the roller can follow under the bent axle rotation effect the reciprocal linear motion of axial of bent axle, the roller is located the inside of cylinder and general the inner space of cylinder divide into independent first cavity and second cavity, first cavity with the second cavity is followed the axial setting of bent axle. According to the utility model discloses, cancelled the setting of balancing piece, need not the balanced atress of balancing piece, the bent axle does not have eccentric circle, and the compressor atress is more balanced, has reduced the compressor vibration, has avoided vibration and part wear problem that eccentric rotation arouses among the prior art, simultaneously, need not to set up the gleitbretter structure among the prior art, has reduced the motion part, and then reduces frictional loss and refrigerant and reveals, has improved the efficiency and the reliability of compressor.

Description

Pump body subassembly, compressor and air conditioner

Technical Field

The utility model belongs to the technical field of the compressor is made, concretely relates to pump body subassembly, compressor and air conditioner.

Background

The existing rotor compressor crankshaft has an eccentric circle, the eccentric circle of the crankshaft rotates together with the crankshaft rotation and drives a roller arranged on the peripheral surface of the eccentric circle to rotate, in order to keep balance, a main balance block and an auxiliary balance block are added on the rotor, which causes the additional load of a rotating body and reduces the efficiency of the compressor, and meanwhile, the centrifugal force caused by the rotation of the balance blocks increases the deflection of the crankshaft, thus causing the problems of vibration of the compressor and abrasion of parts.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a pump body subassembly, compressor and air conditioner can overcome the rotatory centrifugal force that brings of balancing piece among the prior art, increases the bent axle amount of deflection, causes the problem of compressor vibration and part wearing and tearing.

In order to solve the problem, the utility model provides a pump body subassembly, including bent axle, roller, cylinder, the roller suit in on the outer periphery wall of bent axle and the two pass through threaded connection, the roller can follow under the rotatory effect of bent axle the reciprocal linear motion of axial of bent axle, the roller is located the inside of cylinder and general the inner space of cylinder divide into independent first cavity and second cavity, first cavity with the second cavity is followed the axial setting of bent axle.

In some embodiments of the present invention, the substrate is,

the pump body assembly further comprises a first flange and a second flange which are arranged at two axial ends of the cylinder respectively, and the first flange and the second flange are provided with exhaust holes.

In some embodiments of the present invention, the substrate is,

the outer circle side wall of the roller is provided with an annular groove extending inwards along the radial direction of the roller, and the roller is internally provided with a suction channel communicated with the annular groove, and the suction channel can be used for enabling a suction hole in the cylinder to be selectively communicated with the first cavity or the second cavity through the annular groove.

In some embodiments of the present invention, the substrate is,

the roller has a first position adjacent the first flange and a second position adjacent the second flange, the roller being at least partially coincident between the mouth of the annular groove and the suction hole when in either the first or second position.

In some embodiments of the present invention, the substrate is,

the air suction channel comprises a first air suction channel communicated with the first cavity and a second air suction channel communicated with the second cavity, a first air suction valve capable of being opened and closed according to the pressure difference between the inner side and the outer side of the first cavity is arranged in the first air suction channel, and a second air suction valve capable of being opened and closed according to the pressure difference between the inner side and the outer side of the second cavity is arranged in the second air suction channel.

In some embodiments of the present invention, the substrate is,

the suction passage has at least two.

In some embodiments of the present invention, the substrate is,

the threads are left-hand threads and right-hand threads that are wound crosswise to one another, the left-hand threads and the right-hand threads being 180 ° out of phase.

The utility model also provides a compressor, including foretell pump body subassembly.

The utility model also provides an air conditioner, including foretell compressor.

The utility model provides a pump body subassembly, compressor and air conditioner, with the roller suit on the bent axle, through screw-thread fit connection in bent axle and roller cooperation department, so as to make the roller along the reciprocating linear motion of the axial of bent axle under the bent axle rotation effect, the roller will the cylinder divide into independent first cavity and second cavity along the axial of bent axle, when the roller is close to first cavity, first cavity is the compression chamber, the second cavity is the suction chamber, when the roller is close to the second cavity, first cavity is the suction chamber, the second cavity is the compression chamber, the roller is along the axial of bent axle reciprocating linear motion and accomplish gaseous suction and compression, compare with prior art, need not balancing piece balanced atress, the bent axle does not have eccentric circle, the compressor atress is more balanced, compressor vibration has been reduced, vibration and part wearing and tearing problem that the eccentric rotation caused among the prior art have been avoided, meanwhile, a slip sheet structure in the prior art is not required to be arranged, moving parts are reduced, friction loss and refrigerant leakage are reduced, and the energy efficiency and the reliability of the compressor are improved.

Drawings

Fig. 1 is an internal structural view (section) of a pump body assembly according to an embodiment of the present invention;

fig. 2 is a top view of a pump body assembly according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a crankshaft according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

fig. 5 is a cross-sectional view of a roller according to an embodiment of the present invention;

fig. 6 is a top view of a roller according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a cylinder according to an embodiment of the present invention;

fig. 8 is a schematic view of an internal structure of a compressor according to an embodiment of the present invention.

The reference numbers are given as:

1. a crankshaft; 2. a first muffler; 3. a first flange; 4. a cylinder; 5. a screw; 6. a second flange; 7. a second muffler; 8. an oil guide sheet; 9. a roller; 10. an annular groove; 11. an exhaust hole; 12. an air suction passage; 13. a first air intake valve; 14. a suction hole; 15. a second suction valve.

Detailed Description

Referring to fig. 1 to 8 in combination, according to the embodiment of the present invention, a pump body assembly is provided, including crankshaft 1, roller 9, cylinder 4, roller 9 suit is in on the outer circumferential wall of crankshaft 1 and the two pass through threaded connection, roller 9 can follow crankshaft 1's rotatory effect down the reciprocal linear motion of axial of crankshaft 1, roller 9 is located the inside of cylinder 4 and will the inner space of cylinder 4 divide into independent first cavity and second cavity, first cavity with the second cavity is followed the axial setting of crankshaft 1. In the technical scheme, a roller 9 is sleeved on a crankshaft 1, the matching part of the crankshaft 1 and the roller 9 is connected in a threaded matching way so as to enable the roller 9 to do reciprocating linear motion along the axial direction of the crankshaft 1 under the rotation of the crankshaft 1, the roller 9 divides the cylinder 4 into a first cavity and a second cavity which are independent along the axial direction of the crankshaft 1, when the roller 9 approaches to the first cavity, the first cavity is a compression cavity, the second cavity is an air suction cavity, when the roller 9 approaches to the second cavity, the first cavity is the air suction cavity, the second cavity is the compression cavity, and the roller 9 does reciprocating linear motion along the axial direction of the crankshaft 1 to finish air suction and compression of gas. Meanwhile, a slip sheet structure in the prior art is not required to be arranged, moving parts are reduced, friction loss and refrigerant leakage are reduced, and the energy efficiency and the reliability of the compressor are improved.

In some embodiments, the pump body assembly further includes a first flange 3 and a second flange 6 respectively disposed at two axial ends of the cylinder 4, and the first flange 3 and the second flange 6 each have a vent hole 11. In the technical scheme, the exhaust holes 11 are arranged on the flange, so that the effective compression or air suction space of the cavity of the cylinder 4 can be increased, and the refrigerating capacity of the compressor is improved.

In some embodiments, the roller 9 has an annular groove 10 extending inward along a radial direction of the roller 9 on an outer circumferential side wall thereof, the roller 9 further has a suction passage 12 therein communicating with the annular groove 10, and the suction passage 12 can selectively communicate a suction hole 14 of the cylinder 4 with the first cavity or the second cavity via the annular groove 10. In the technical scheme, an annular groove 10 is formed in the circumferential direction of a roller 9 and is communicated with a suction hole 14 of a cylinder 4, so that a refrigerant enters the annular groove 10 of the roller through the suction hole 14, then enters the roller 9, axially penetrates through the roller 9 and is provided with a suction channel 12, the suction channel 12 is communicated with the annular groove 10, and the refrigerant in the annular groove 10 can enter a first cavity or a second cavity through the suction channel 12.

In some embodiments, the roller 9 has a first position adjacent to the first flange 3 and a second position adjacent to the second flange 6, the groove mouth of the annular groove 10 and the suction hole 14 at least partially coinciding when the roller 9 is in either the first position or the second position. When the roller 9 moves along the axial direction of the crankshaft 1, although the communication part of the annular groove 10 and the air suction hole 14 changes along with the movement of the roller 9, the communication state is always kept, the air suction cavity can be ensured to suck air all the time, and the problem that the cooling capacity of the compressor is reduced because the air suction is stopped because the annular groove 10 is disconnected from the air suction hole is solved.

In some embodiments, the air suction passage 12 includes a first air suction passage communicated with the first cavity, a second air suction passage communicated with the second cavity, the first air suction passage has a first air suction valve 13 therein, which can be opened and closed according to a pressure difference between the inside and the outside of the first cavity, and the second air suction passage has a second air suction valve 15 therein, which can be opened and closed according to a pressure difference between the inside and the outside of the second cavity. The check valve is arranged in the air suction channel 12, when the roller 9 approaches the second cavity, the air pressure inside the first cavity is smaller than the air pressure outside the first cavity, the first air suction valve 13 is opened, the first cavity starts to suck air, meanwhile, the air pressure inside the second cavity is larger than the air pressure outside the second cavity, the second air suction valve 15 is closed, the second cavity stops sucking air, the refrigerant in the cavity starts to be compressed, the reverse motion is also performed, and the risk of refrigerant backflow can be avoided while the pressure in the cavity can be ensured.

In some embodiments, the suction channel 12 has at least two. A plurality of air suction channels 12 can be arranged to reduce air suction resistance, meet air suction requirements of the cavity and avoid that the air suction quantity caused by the fact that the air volume of the air suction channels 12 cannot meet the air suction quantity of the cavity is insufficient and the refrigerating capacity of the compressor is influenced.

In some embodiments, the threads are left-hand threads and right-hand threads that are wound crosswise to one another, the left-hand threads and the right-hand threads being 180 ° out of phase. The left-handed thread and the right-handed thread which are designed to be mutually crossed are adopted, the phase difference is 180 degrees, the roller 9 can enter the opposite thread channel when moving to one end of the crankshaft 1 and can move towards the opposite direction, the automatic reversing is realized under the condition that the crankshaft 1 does not need to reversely rotate, the problem of part abrasion caused by the reverse rotation of the crankshaft 1 is avoided, meanwhile, the control logic of a motor can be simplified, and the crankshaft 1 only rotates along one direction without reversing control.

According to the utility model discloses an embodiment still provides a compressor, including foretell pump body subassembly.

According to the utility model discloses an embodiment still provides an air conditioner, including foretell compressor.

In a specific embodiment, the pump body assembly comprises a crankshaft 1, a first silencer 2, an upper flange (namely a first flange 3), a cylinder 4, a screw 5, a lower flange (namely a second flange 6), a second silencer 7 and an oil guide sheet 8, wherein the upper flange and the lower flange are fixed on two opposite side surfaces of the cylinder 4 through the screw 5, a roller 9 is sleeved on the crankshaft 1 and is positioned in the cylinder 4, the first silencer 2 is arranged on one side, away from the cylinder 4, of the upper flange, the second silencer 7 is arranged on one side, away from the cylinder 4, of the lower flange, a section of left-and-right thread lead screw is arranged on a part, matched with the roller 9, of the crankshaft 1, the left-and-right-hand threads have the functions of conduction and force transmission screws, the left-and-hand threads are mutually crossed and wound, the phase difference is 180 degrees, and the thread pitches are equal. As shown in fig. 4, the cross sections of the left-hand thread and the right-hand thread are trapezoidal, and the size and shape of the profile angle α, the crest width H and the root width H at the trapezoidal cross sections of the two threads are respectively and correspondingly equal; and the values of alpha and H can be flexibly adjusted according to the requirements of thread strength and roller steering. The thread grooves at the ends of the left and right thread screws can enable the roller 9 to automatically turn, and automatic reversing is realized without reversely rotating the crankshaft 1. When the crankshaft 1 rotates, the roller 9 rotates along with a left (or right) thread groove of the thread screw and moves linearly along the axial direction of the thread screw, when the roller 9 moves to the end part of the thread, the roller is limited by an arc structure designed at the end part of the left thread groove and the right thread groove, and the roller 9 automatically enters the right (or left) thread groove along with the swinging of the roller, so that the automatic reversing function is realized.

The inner wall of the cylinder 4, the plane of the roller 9 and the plane of the upper flange (namely the first flange 3) form a cylindrical upper cavity (namely the first cavity), the inner wall of the cylinder 4, the plane of the roller 9 and the plane of the lower flange (namely the second flange 6) form a cylindrical lower cavity (namely the second cavity), the inner wall of the cylinder 4 is in clearance fit with the excircle of the roller 9, exhaust holes 11 are formed in the planes of the upper flange and the lower flange, an air suction channel 12 is formed in the axial direction of the roller 9, one end of the air suction channel 12 is connected with the cavity, the other end of the air suction channel 12 is communicated with a kidney-shaped groove (namely an annular groove 10) of the roller, the kidney-shaped groove is communicated with an air suction hole 14 of the cylinder 4, an air suction valve is arranged in the air suction channel 12, and the air suction valve automatically opens or closes the valve clack according to the pressure difference between two sides of the cavity.

The roller 9 moves linearly along the axial direction of the threaded screw shaft, when the roller 9 rises, refrigerant in the upper cavity is compressed, the upper cavity is a compression cavity, the pressure of the upper cavity is greater than the suction pressure, an upper suction valve (namely a first suction valve 13) is closed to prevent the refrigerant from flowing back to a suction hole, and when the exhaust pressure is reached, the high-temperature and high-pressure refrigerant opens an exhaust hole in an upper flange to exhaust; meanwhile, as the roller 9 rises, the volume of the lower cavity is enlarged, the cavity pressure is lower than the suction pressure, the lower suction valve (namely the second suction valve 15) is opened, the low-pressure refrigerant enters the roller kidney-shaped groove through the suction hole of the cylinder, and then enters the lower cavity through the lower suction valve on the roller 9, and at the moment, the lower cavity is a suction cavity. Conversely, when the roller descends, the upper cavity becomes a suction cavity and the lower cavity becomes a compression cavity.

The utility model discloses bent axle 1 does not have eccentric circle, need not the balanced atress of balancing piece, and the bent axle does not have eccentric circle, and the compressor atress is more balanced, has avoided vibration and part wear problem that eccentric rotation arouses among the prior art. Need not to set up the gleitbretter structure among the prior art, removed gleitbretter, spring, the cylinder cancels gleitbretter groove, spring hole, crescent moon groove, has reduced the kinematic pair, and then reduces frictional loss and refrigerant and reveals, has improved the efficiency and the reliability of compressor.

Those skilled in the art will readily appreciate that the advantageous features of the above described modes can be freely combined, superimposed without conflict.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The pump body assembly is characterized by comprising a crankshaft (1), a roller (9) and a cylinder (4), wherein the roller (9) is sleeved on the outer circumferential wall of the crankshaft (1) and is in threaded connection with the outer circumferential wall of the crankshaft (1), the roller (9) can axially reciprocate linearly under the rotating action of the crankshaft (1), the roller (9) is located inside the cylinder (4) and divides the inner space of the cylinder (4) into a first cavity and a second cavity which are independent, and the first cavity and the second cavity are arranged axially of the crankshaft (1).

2. The pump body assembly according to claim 1, further comprising a first flange (3) and a second flange (6) respectively arranged at two axial ends of the cylinder (4), the first flange (3) and the second flange (6) each having a vent hole (11).

3. The pump block assembly according to claim 2, characterized in that the roller (9) has an annular groove (10) on its outer circumferential side wall extending radially inwards of the roller (9), the roller (9) also having a suction channel (12) therein communicating with the annular groove (10), the suction channel (12) being capable of selectively communicating a suction hole (14) on the cylinder (4) with the first cavity or the second cavity via the annular groove (10).

4. The pump body assembly according to claim 3, characterized in that the roller (9) has a first position close to the first flange (3) and a second position close to the second flange (6), the notch of the annular groove (10) and the suction hole (14) being at least partially coincident when the roller (9) is in the first position or in the second position.

5. The pump body assembly according to claim 3, wherein the air suction channel (12) comprises a first air suction channel communicated with the first cavity and a second air suction channel communicated with the second cavity, the first air suction channel is internally provided with a first air suction valve (13) capable of opening and closing according to the pressure difference between the inside and the outside of the first cavity, and the second air suction channel is internally provided with a second air suction valve (15) capable of opening and closing according to the pressure difference between the inside and the outside of the second cavity.

6. The pump body assembly according to claim 3, characterized in that said suction channel (12) has at least two.

7. The pump body assembly of claim 1, wherein the threads are left-hand and right-hand threads that are intertwined with one another, the left-hand and right-hand threads being 180 ° out of phase.

8. A compressor, characterized by comprising a pump body assembly according to any one of claims 1 to 7.

9. An air conditioner characterized by comprising the compressor as set forth in claim 8.