CN204827871U - Cylinder components , compressor and air conditioner - Google Patents

Abstract

The utility model provides a cylinder components, including jar frame structure, cylinder structure and assembly structure, the structural cylinder mounting hole that is provided with of jar frame, the cylinder is structural to be provided with the cylinder guide hole corresponding with the cylinder mounting hole, assembly structure includes fastening screw and hollow guide pillar, and in the cylinder guide hole is arranged in to the guide pillar, and the length of guide pillar is greater than the degree of depth of cylinder guide hole, the hollow portion that fastening screw runs through the guide pillar cooperatees with the cylinder mounting hole to fix at the jar frame cylinder structure structural. The utility model discloses still relate to a compressor and an air conditioner of using above -mentioned cylinder structure. The utility model discloses a cylinder components, compressor and air conditioner to the piston has better axiality with the cylinder in having guaranteed compressor assembling process, thereby has reduced the inordinate wear between piston and the cylinder structure, has reduced the friction loss between piston and the cylinder structure, has improved the performance of compressor.

Description

Cylinder assembly, compressor and air conditioner

Technical Field

The utility model relates to an air conditioner technical field especially relates to a cylinder assembly, compressor and air conditioner.

Background

The plate spring support technology is one of the key technologies of the linear compressor. Compared with the traditional cylindrical spring, the plate spring has larger radial rigidity, so that the piston cannot generate radial displacement due to vibration in the motion, and the direct contact between the piston and the cylinder is avoided. However, in the assembling process of the compressor, the outer circle axis of the piston is inclined at a certain angle or is deviated at a certain distance relative to the inner circle axis of the cylinder, or both of them are easy to occur, so that the faults of high power consumption of the compressor, abnormal abrasion between the piston and the cylinder, even clamping between the piston and the cylinder, and the like occur.

SUMMERY OF THE UTILITY MODEL

In view of the current situation of the prior art, an object of the utility model is to provide a cylinder assembly, compressor and air conditioner, solved the problem that piston and cylinder structure axiality are difficult to control in the compressor assembling process, avoided the unusual wear phenomenon of piston and cylinder structure, improved the performance of compressor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a cylinder assembly, comprising:

the cylinder frame structure is provided with a cylinder mounting hole;

the air cylinder structure is provided with an air cylinder guide hole corresponding to the air cylinder mounting hole; and

the assembling structure comprises a fastening screw and a hollow guide pillar, the guide pillar is arranged in the cylinder guide hole, and the length of the guide pillar is greater than the depth of the cylinder guide hole;

the fastening screw penetrates through the hollow part of the guide pillar to be matched with the cylinder mounting hole, so that the cylinder structure is fixed on the cylinder frame structure.

In one embodiment, the difference between the diameter of the cylinder guide hole and the outer diameter of the guide pillar is 0.01-0.06 mm, and the difference between the length of the guide pillar and the depth of the cylinder guide hole is 0.01-0.1 mm.

In one embodiment, the diameter of the blocking surface of the fastening screw is larger than that of the cylinder guide hole, and the difference between the diameter of the blocking surface of the fastening screw and the diameter of the cylinder guide hole is at least 0.5 mm.

In one embodiment, the exhaust structure is fixedly mounted on the cylinder structure.

The utility model also provides a compressor, which comprises a stator component, a motion component, a plate spring component and any one of the cylinder components;

the stator assembly comprises a motor stator and a stator fixing plate, the motor stator and the stator fixing plate are sequentially arranged on the cylinder frame structure, a fixing plate fixing hole is formed in the stator fixing plate, a cylinder frame fixing hole corresponding to the fixing plate fixing hole is formed in the cylinder frame structure, and the stator assembly is fixed on the cylinder frame structure through a first fixing structure which sequentially penetrates through the fixing plate fixing hole and the cylinder frame fixing hole;

the moving assembly comprises a motor rotor and a piston, one end of the piston is fixedly connected with the motor rotor, the other end of the piston is embedded in the air cylinder assembly, a compression cavity is formed by the piston and the inner wall of the air cylinder structure, the motor rotor is arranged on a closed alternating magnetic circuit formed by the motor stator, and the motor rotor can drive the piston to reciprocate relative to the air cylinder assembly;

the plate spring assembly is fixed on the moving assembly and is fixedly connected with the stator assembly.

In one embodiment, the motion assembly further comprises a connector, the connector is fixedly connected with the motor rotor and the piston, and the plate spring assembly is arranged on the connector.

In one embodiment, the connecting member is provided with a connecting member fixing hole, the motor rotor is provided with a rotor fixing hole corresponding to the connecting member fixing hole, the piston is provided with a piston fixing hole corresponding to the rotor fixing hole, and the connecting member is fixed on the moving assembly through a second fixing structure which sequentially penetrates through the connecting member fixing hole, the rotor fixing hole and the piston fixing hole.

In one embodiment, the plate spring assembly comprises a plurality of plate springs, the plate springs are arranged in an overlapped mode, and each plate spring comprises two elastic arms and a fixing portion for installation and positioning;

the two elastic arms have the same structure and are formed by tangency of a plurality of pairs of concentric arcs or eccentric arcs; the radiuses of the plurality of pairs of concentric circular arcs or eccentric circular arcs are gradually increased from inside to outside, the centers of all the concentric circular arcs or eccentric circular arcs are on the same straight line, a pair of concentric circular arcs or eccentric circular arcs positioned at the outermost ring is not more than a half ring, and the rest pairs of concentric circular arcs or eccentric circular arcs are half rings;

the initial ends of the two elastic arms are tangent, an inner fixing hole is formed in the joint of the two elastic arms, the two elastic arms are uniformly distributed by taking the inner fixing hole as the center, and the gap between the two elastic arms is 0.1-0.5 times larger than the thickness of each elastic arm;

the tail ends of the two elastic arms are respectively connected with the fixing part.

In one embodiment, the fixing portion is a circular fixing ring;

the inner fixing hole is positioned in the center of the fixing part, and the two elastic arms take the center of the fixing part as a starting end and extend towards the periphery of the fixing part in a spiral manner; the tail ends of the two elastic arms are respectively in transition connection with the fixed part through arcs; the fixing part is provided with an outer fixing hole.

In one embodiment, the connecting piece is further provided with a connecting column adapted to be matched with the internal fixing hole, the plurality of plate springs are sequentially sleeved on the connecting column through the internal fixing hole, and the plate spring assembly is fixedly connected with the connecting piece through a third fixing structure;

the stator fixing plate is provided with fixing plate screw holes in one-to-one correspondence with the outer fixing holes, and the plate spring assembly is fixed on the stator assembly through a fourth fixing structure which sequentially penetrates through the outer fixing holes in the plate springs and the fixing plate screw holes.

In one embodiment, a plurality of plate springs are provided with a gasket therebetween, and the gasket is an inner gasket arranged at the inner fixing hole and an outer gasket arranged at the outer fixing hole.

In one embodiment, the connecting piece is further provided with a ventilation relief portion and a suction through-flow portion adapted to communicate with the suction hole of the piston.

In one embodiment, the change of the gas force of the piston in one working period satisfies the following formula: $F_g\left(t\right)=\frac{2a_{1}T}{2\mathrm{\π}s}{y}^{\′}\left(t\right)-\frac{2b_1}{s}y\left(t\right)+F_0;$

wherein, definek_gIs the equivalent gas stiffness of the gas force in the period T.

The utility model relates to an air conditioner, including above-mentioned arbitrary compressor.

The utility model has the advantages that:

the utility model discloses a cylinder assembly, compressor and air conditioner, through the equipment that sets up assembly structure realization cylinder assembly, and in the cylinder guide hole was arranged in to the guide pillar, the length of guide pillar was greater than the degree of depth of cylinder guide hole, guaranteed the compressor at the operation in-process, cylinder structure suspends all the time in jar frame construction, cylinder structure can be from the position of self-adaptation piston, thereby guaranteed that the piston has better axiality with the cylinder in the compressor assembly process, thereby reduced the abnormal wear between piston and the cylinder structure, the friction loss between piston and the cylinder structure has been reduced, the performance of compressor has been improved.

Drawings

FIG. 1 is an assembly view of an embodiment of a cylinder assembly according to the present invention;

FIG. 2 is a schematic diagram showing the dimensional relationship between the assembly mechanism and the cylinder guide hole in the cylinder assembly of the present invention;

FIG. 3 is a schematic view of the assembly of the cylinder structure and the exhaust structure in the cylinder assembly according to the present invention;

fig. 4 is a schematic view of an embodiment of the compressor of the present invention;

fig. 5 is an assembly schematic view of a stator assembly and a cylinder frame structure in the compressor of the present invention;

fig. 6 is an assembly view of an embodiment of the moving component of the compressor of the present invention;

fig. 7 is a schematic assembly view of an embodiment of a moving assembly and a leaf spring assembly in a compressor according to the present invention;

fig. 8 is an assembly diagram of the plate spring assembly, the moving assembly and the stator assembly in the compressor of the present invention;

fig. 9 is a cross-sectional view of an embodiment of a plate spring in a compressor according to the present invention;

fig. 10 is a schematic structural view of an embodiment of a plate spring in a compressor according to the present invention;

FIG. 11 is the same as FIG. 10, showing the arm widths of the starting ends of the two resilient arms and the gap between the two resilient arms;

fig. 12 is a graph showing the variation of gas force in a working cycle of the piston of the compressor of the present invention;

fig. 13 is a reciprocating motion diagram of the piston in the compressor of the present invention during one working cycle.

Detailed Description

In order to make the technical solution of the present invention clearer, the cylinder assembly, the compressor and the air conditioner of the present invention are further described in detail below with reference to the accompanying drawings, it should be understood that the specific embodiments described herein are only used for explaining the present invention and are not used for limiting the present invention.

Referring to fig. 1 to 13, as shown in fig. 1 and 2, the cylinder assembly of the present invention includes a cylinder frame structure 100, a cylinder structure 200, an assembling structure 300, and an exhaust structure 400. The cylinder frame structure 100 is provided with a cylinder mounting hole 110, and the cylinder structure 200 is provided with a cylinder guide hole 210 corresponding to the cylinder mounting hole 110. The mounting structure 300 includes a hollow guide post 310 and a fastening screw 320, and the cylinder guide hole 210 is a circular hole. The guide post 310 is disposed in the cylinder guide hole 210, i.e., the outer diameter d1 of the guide post 310 is smaller than the diameter d2 of the cylinder guide hole 210, and the length h1 of the guide post 310 is greater than the depth h2 of the cylinder guide hole 210. The cylinder structure 200 is suspended in the cylinder frame structure 100 all the time in the operation process of the compressor, and the cylinder structure 200 can be self-adaptive to the position of the piston, so that the piston and the cylinder have good coaxiality in the assembly process of the compressor, abnormal abrasion between the piston and the cylinder structure is reduced, friction loss between the piston and the cylinder structure is reduced, and the performance of the compressor is improved.

The fastening screw 320 is fitted into the cylinder mounting hole 110 through the hollow portion of the guide post 310 so that the cylinder structure 200 is fixed to the cylinder frame structure 100. In this embodiment, in order to ensure the reliability of fixing the cylinder structure 200 and the cylinder frame structure 100, the number of the assembling structures 300 is 3. Correspondingly, the cylinder mounting holes 110 and the cylinder guide holes 210 are arranged in one-to-one correspondence with the mounting structures 300, that is, the number of the cylinder mounting holes 110 on the cylinder frame structure 100 is 3, and the 3 cylinder mounting holes 110 are uniformly distributed on the cylinder frame structure 100. The number of cylinder guide holes 210 on the cylinder structure 200 is also 3, and the 3 cylinder guide holes 210 are evenly distributed on the cylinder structure 200. In other embodiments, the number of the cylinder mounting holes 110, the cylinder guide holes 210, and the mounting structures 300 may also be two or more than three.

The exhaust structure 400 is fixedly mounted on the cylinder structure 200, as shown in fig. 3, the cylinder structure 200 is further provided with cylinder screw holes 220, the exhaust structure 400 is provided with exhaust fixing holes 410 corresponding to the cylinder screw holes 220 one to one, and the exhaust structure 400 is fixed on the cylinder structure 400 through positioning screws 420 sequentially penetrating through the exhaust fixing holes 410 and the cylinder screw holes 220. In the present embodiment, the number of the cylinder screw holes 220 and the number of the exhaust fixing holes 410 are 3, and only two exhaust fixing holes 410 are shown in fig. 3.

Preferably, the difference between the diameter of the cylinder guide hole 210 and the outer diameter of the guide pillar 310 is 0.01mm to 0.06mm, and the difference between the length of the guide pillar 310 and the depth of the cylinder guide hole 210 is 0.01mm to 0.1 mm. The diameter of the blocking surface of the fastening screw 320 is larger than that of the cylinder guide hole 210, and the difference between the diameter of the blocking surface of the fastening screw 320 and the diameter of the cylinder guide hole 210 is at least 0.5mm, so that the effective fixation between the cylinder structure and the cylinder frame structure can be ensured.

As shown in fig. 4, the present invention further provides a compressor, which includes a stator assembly 500, a moving assembly 600, a plate spring assembly 700, a housing 800, and the cylinder assembly of any of the above embodiments. The stator assembly 500, the moving assembly 600, the plate spring assembly 700 and the cylinder assembly are disposed in the housing 800, and the housing 800 plays a role of protecting the internal components of the compressor.

The stator assembly 500 includes a motor stator 510 and a stator fixing plate 520, and the motor stator 510 and the stator fixing plate 520 are sequentially disposed on the cylinder frame structure 100. The stator fixing plate 520 is provided with a fixing plate fixing hole 521, the cylinder frame structure 100 is provided with a cylinder frame fixing hole 120 corresponding to the fixing plate fixing hole 521, and the stator assembly 500 is fixed on the cylinder frame structure 100 through a first fixing structure 530 sequentially penetrating through the fixing plate fixing hole 521 and the cylinder frame fixing hole 120. The first fixing structure 530 may adopt a fixing structure such as a screw, a bolt, or a rivet. The first fixing structure 530 in this embodiment is preferably a screw structure, and the cylinder frame fixing hole 120 is preferably a screw hole.

In this embodiment, the fixing plate fixing holes 521, the cylinder frame fixing holes 120, and the first fixing structures 530 are disposed in a one-to-one correspondence, and the number of the fixing plate fixing holes 521, the cylinder frame fixing holes 120, and the first fixing structures 530 is 3. Wherein, 3 fixed plate fixing holes 521 are evenly distributed on the stator fixed plate 520, and 3 cylinder frame fixing holes 120 are evenly distributed on the cylinder frame structure 100. In other embodiments, the number of the fixing plate fixing holes 521, the cylinder frame fixing holes 120, and the first fixing structures 530 may also be two or more than three.

To ensure the relative positional relationship between the stator fixing plate 520 and the cylinder frame structure 100, a fixing plate positioning hole 522 is provided in the stator fixing plate 520. Accordingly, the cylinder frame structure 100 is provided with cylinder frame positioning holes 130 corresponding to the fixing plate positioning holes 522 one to one. In this embodiment, the number of the fixing plate positioning holes 522 and the number of the cylinder frame positioning holes 130 are two, two fixing plate positioning holes 522 are symmetrically arranged with respect to the center of the stator fixing plate 520, and two cylinder frame positioning holes 130 are symmetrically arranged with respect to the center of the cylinder frame structure 100.

As shown in fig. 5, in the assembly process of the stator assembly 500 and the cylinder frame structure 100, the fixing plate positioning holes 522 and the corresponding cylinder frame positioning holes 130 are guided coaxially by the installation tool to ensure the relative positions of the stator fixing plate 520 and the cylinder frame structure 100, and then the first fixing structure 530 is used to fix the stator assembly 500 on the cylinder frame structure 100.

The moving assembly 600 includes a motor mover 610 and a piston 620, wherein one end of the piston 620 is fixedly connected to the motor mover 610, and specifically, one end of the piston 620 is fixedly connected to the motor mover 610 through a fastening element such as a screw. The other end of the piston 620 is embedded in the cylinder assembly to form a compression cavity 880 with the inner wall of the cylinder structure 200, the motor rotor 610 is disposed on a closed alternating magnetic path formed by the motor stator 510, and the motor rotor 610 can drive the piston to reciprocate relative to the cylinder assembly, thereby realizing the processes of suction, compression and discharge of gas.

The plate spring assembly 700 is fixed to the moving assembly 600, and the plate spring assembly 700 is fixedly connected with the stator assembly 500. The leaf spring assembly 700 is used to prevent the piston 620 from generating radial displacement due to vibration during movement, and avoid direct contact between the piston 620 and the cylinder structure 200, thereby further ensuring the coaxiality of the piston 620 and the cylinder structure 200 and improving the performance of the compressor. In addition, the plate spring assembly 700 can also reduce the equivalent mass of the piston 620 in the compressor, and meet the requirements of high frequency and low resonance mass of the air-conditioning linear compressor.

In the process of assembling the compressor, the pre-assembly of the cylinder assembly is first completed, i.e. the guide pillar 310 is inserted into the cylinder guide hole 210 of the cylinder structure 200, and then the fastening screw 320 is screwed into the cylinder mounting hole 110 of the cylinder frame structure 100 through the guide pillar 310. Then the stator assembly 500 is fixed to the cylinder frame structure 100, and finally the moving assembly 600 is fixed to the stator assembly 500, completing the pre-assembly of the compressor. Then the motor is powered on, the motor rotor 610 is controlled to drive the piston 620 to do low-frequency small-amplitude reciprocating motion, coaxial positioning of the cylinder structure 200 and the piston 620 is achieved, finally the fastening screw 320 is screwed down, and the guide pillar 310 and the cylinder frame structure 100 are fixed together. Thus, by adopting the dynamic assembly process of the cylinder structure 200, the cylinder structure 200 and the piston 620 are further ensured to have good coaxiality, and the performance of the compressor is further improved.

The working process of the compressor of the embodiment is as follows:

air is introduced into the casing 800 through an air inlet 810 provided in the casing 800, and low-pressure air in the casing 800 is sucked into the compression chamber 880 through an air inlet hole of the piston 620 via the air suction valve 850. After the gas in the compression chamber 880 is compressed, when the pressure of the gas in the compression chamber 880 reaches a certain level, the discharge valve 870 is opened, and the high-pressure gas is discharged to the outside of the compressor case 800 through the inner discharge pipe 830 and the discharge port 820. The high-pressure gas which is not discharged forms suction pressure in the compression cavity 880, and the repeated compression process is realized.

It should be clear that the suction valve 850 of the compressor of the present invention is further provided with a suction valve fixing member 860 for ensuring the normal operation of the suction valve 850. Preferably, the compressor of the present embodiment further includes a pump body support spring 840 for supporting.

As an implementation manner, the moving assembly 600 further includes a connecting member 630, the connecting member 630 is fixedly connected to the motor mover 610 and the piston 620, the plate spring assembly 700 is disposed on the connecting member 630, and the plate spring assembly 700 is fixedly connected to the stator assembly 600.

Preferably, the connector 630 is provided with a connector fixing hole 631, the motor rotor 610 is provided with a rotor fixing hole 611 corresponding to the connector fixing hole 631, the piston 620 is provided with a piston fixing hole 621 corresponding to the rotor fixing hole 611, and the connector 630 is fixed to the moving assembly 600 by a second fixing structure 640 sequentially penetrating through the connector fixing hole 631, the rotor fixing hole 611, and the piston fixing hole 621. The second fixing structure 640 may be a fixing structure such as a screw, a bolt, or a rivet. The second fixing structure 640 in this embodiment is preferably a screw structure, and the piston fixing hole 621 is preferably a screw hole.

In this embodiment, the connector fixing holes 631, the mover fixing holes 611, the piston fixing holes 621, and the second fixing structures 640 are correspondingly arranged one by one, and the number of the connector fixing holes, the mover fixing holes 611, and the second fixing structures 640 are 3. In other embodiments, the number of the connector fixing holes 631, the mover fixing holes 611, the piston fixing holes 621, and the second fixing structures 640 may also be two or more than three. Preferably, a connector positioning hole 632 is further disposed on the connector 630, a mover positioning hole 612 is further disposed on the motor mover 610, and a piston positioning hole 622 is disposed on the piston to ensure the relative positional relationship of the connector 630, the motor mover 610, and the piston 620. Preferably, the motor mover 620 is further provided with mover ventilation holes, in this embodiment, the number of the mover ventilation holes is 6, and the 6 mover ventilation holes are uniformly disposed on the motor mover.

As shown in fig. 6, in the assembling process, the connector positioning hole 632, the mover positioning hole 612 and the piston positioning hole 622 are guided coaxially to ensure the relative positions of the connector 630, the motor mover 610 and the piston 620, and then the second fixing structure 640 is used to fix the connector 630, the motor mover 610 and the piston 620, thereby completing the assembly of the moving assembly 600.

As shown in fig. 9, the plate spring assembly 700 includes a plurality of plate springs 710, and the plurality of plate springs 710 are disposed to overlap each other. The plate spring 710 includes two elastic arms 711 and a fixing portion 712 for mounting and positioning. The two elastic arms 711 have the same structure and are formed by tangency of a plurality of pairs of concentric arcs or eccentric arcs; the radiuses of the concentric circular arcs or the eccentric circular arcs are gradually increased from inside to outside, and the centers of all the concentric circular arcs or the eccentric circular arcs are on the same straight line. Preferably, a pair of concentric arcs or eccentric arcs located at the outermost circle is not greater than a half circle, so that the ends of the concentric arcs or eccentric arcs are in arc transition connection with the fixing portion 712, and the remaining pair of concentric arcs or eccentric arcs is a half circle.

The initial ends of the two elastic arms 711 are tangent, an inner fixing hole 7110 is formed at the joint of the two elastic arms 711, and the two elastic arms 711 are uniformly distributed by taking the inner fixing hole 7110 as the center. Preferably, the gap between the two elastic arms 711 is greater than 0.1-0.5 times the thickness of the elastic arms 711, so as to ensure that there is a sufficient gap between the two elastic arms 711, avoid the mutual interference between the two elastic arms 711, and meet the process requirement.

The ends of the two elastic arms 711 are respectively connected with a fixing part 712, the fixing part 712 is used for mounting and positioning, and the structure of the elastic arms can be designed into corresponding positioning holes or screw holes according to the actual mounting situation. Specifically, the fixing portion 712 is a circular fixing ring; the inner fixing hole 7110 is located at the center of the fixing portion 712, and the two elastic arms 711 extend spirally towards the outer periphery of the fixing portion 712 with the center of the fixing portion 712 as a starting end; the tail ends of the two elastic arms 711 are respectively in transition connection with the fixed part 712 through arcs; the fixing portion 712 is provided with an outer fixing hole 7120.

Preferably, spacers are disposed between the plurality of plate springs 710, the spacers being an inner spacer 740 disposed at the inner fixing hole 7110 and an outer spacer 750 disposed at the outer fixing hole 7120, respectively. The gasket reduces the concentrated stress at the fixing position of the plate spring group, prevents the friction and the abrasion between the adjacent plate springs and prolongs the service life of the plate spring group.

As shown in fig. 10, in the plate spring 710, it is assumed that the two elastic arms 711 are formed by n pairs of concentric circular arcs or eccentric circular arcs that are tangent to each other, and the n pairs of concentric circular arcs or eccentric circular arcs satisfy the following equation from inside to outside:

first pair of arc radii: r₁₁，R₁₂＝R₁₁+e₁+b；

Second pair of arc radii: r₂₁＝R₁₁+R₁₂+J/2，R₂₂＝R₂₁+e₂+(R₁₂-R₁₁)+e₁；

The radius of the arc of the ith (n is more than or equal to i and more than or equal to 3): r_i1＝R_(i-1)1+J，R_i2＝R_i1+e_i+(R_(i-1)2-R_(i-1)1)+e_(i-1)；

Wherein R is₁₁Is the inner circle radius of the first pair of circular arcs, R₁₂The outer radius of the first pair of circular arcs, R₂₁The inner circle radius of the second pair of circular arcs, R₂₂The outer radius of the second pair of circular arcs, R_i1Is the inner circle radius of the ith pair of circular arcs, R_i2The excircle radius of the ith pair of circular arcs. e.g. of the type₁The distance between the center of the outer circle of the first pair of arcs and the center of the inner circle, e₂The center of the outer circle of the second pair of arcs deviates from the center of the inner circle, e_iThe distance between the circle center of the excircle of the ith pair of arcs and the circle center of the inner circle is shown. b is the arm width of the starting ends of the two elastic arms, and J is the gap between the two elastic arms.

The utility model discloses a flexible arm 711's molded lines has clear and definite expression, can be according to this expression, control flexible arm 711's width. E.g. take e_iAnd 0(i is 1 to n), the multi-arm plate spring with the same width is obtained. E.g. take e_i>0(i is 3 to n), a variable-width multi-circular wall spring gradually widened from the center can be obtained. In this embodiment, i is 3, that is, the plate spring in this embodiment is composed of 3 pairs of circular arcs.

As shown in fig. 7, in order to realize the installation and fixation of the plate spring assembly 700, a connection post 633 adapted to the inner fixing hole 7110 is further disposed on the connection member 630, the plurality of plate springs 710 are sequentially sleeved on the connection post 633 through the inner fixing hole 7110, and the plate spring assembly 700 is fixedly connected to the connection member 630 through the third fixing structure 720. To avoid frictional wear of the leaf spring 710, a fastening washer 730 is provided between the third fixing structure 720 and the leaf spring assembly 700. The third fixing structure 720 may adopt a fixing structure such as a screw or a bolt.

As shown in fig. 8, the stator fixing plate 520 is provided with fixing plate screw holes 523 corresponding to the outer fixing holes 7120 one to one, and the plate spring assembly 700 is fixed to the stator assembly 500 by a fourth fixing structure 540 sequentially passing through the outer fixing holes 7120 and the fixing plate screw holes 523 of the plurality of plate springs 710. The fourth fixing structure 540 may be a fixing structure such as a screw, a bolt, or a rivet, and the fourth fixing structure 540 in this embodiment is preferably a screw structure.

In this embodiment, the number of the outer fixing holes 7120 of the plate spring 710 is two, and the two outer fixing holes 7120 are symmetrically disposed with respect to the inner fixing hole 7110. Correspondingly, two fixing plate screw holes 523 are provided in the stator fixing plate 520, and the number of the fourth fixing structures 540 is also two. Of course, in other embodiments, the number of the external fixing holes 7120, the fixing plate screw holes 523, and the fourth fixing structures 540 may also be more than two.

In order to ensure the relative position relationship between the plate spring assembly 700 and the moving assembly 600, two outer positioning holes 7121 are provided on the fixing portion 712 of the plate spring 710, and the two outer positioning holes 7121 are symmetrically arranged with respect to the inner fixing hole 7110. Accordingly, the stator fixing plate 520 is provided with fixing plate positioning holes 522 corresponding to the outer positioning holes 7121 one to one.

The connecting member 630 is further provided with a ventilation relief portion 635 and a suction through-flow portion 634 adapted to communicate with the suction hole of the piston 620, and the connecting post 633, the suction through-flow portion 634 and the ventilation relief portion 635 are integrally formed, thereby simplifying the processing and assembling processes. Wherein the suction through-flow portion 634 ensures that low pressure gas entering the compressor housing can pass through the connection into the suction hole of the piston 620 and then through the suction valve into the compression chamber. The vent relief 635 reduces windage during operation of the motion assembly 600, thereby improving compressor performance.

As shown in fig. 12, the change in gas force of the piston during one cycle satisfies the following equation: $F_g\left(t\right)=\frac{2a_{1}T}{2\mathrm{\π}s}{y}^{\′}\left(t\right)-\frac{2b_1}{s}y\left(t\right)+F_0;$ wherein, define $k_g=\frac{2b_1}{s},$ k_gIs the equivalent gas stiffness of the gas force in the period T.

Specifically, the periodic function of the physical force of the piston in one period is expressed as a Fourier series as follows:neglecting the effects of harmonics above the second order, the gas force is linearized as:

$F_g\left(t\right)=a_{1}sin\frac{2\mathrm{\π}t}{T}+b_{1}cos\frac{2\mathrm{\π}t}{T}+F_0---\left(1\right)$

wherein:

$a_1=\frac{2}{T}{\∫}_0^T{F}_g\left(t\right)sin\frac{2\mathrm{\π}t}{T}d\left(t\right)---\left(2\right)$

$b_1=\frac{2}{T}{\∫}_0^T{F}_g\left(t\right)cos\frac{2\mathrm{\π}t}{T}d\left(t\right)---\left(3\right)$

$F_0=\frac{1}{T}{\∫}_0^T{F}_g\left(t\right)d\left(t\right)---\left(4\right)$

the displacement of the piston in the cylinder with a stroke s relative to the reciprocating center is shown in fig. 13 and can be expressed as the following formula

$y\left(t\right)=-\frac{s}{2}cos\frac{2\mathrm{\π}t}{T}---\left(5\right)$

Substituting formula (2) -formula (5) into formula (1) to obtain:

$F_g\left(t\right)=\frac{2a_{1}T}{2\mathrm{\π}s}{y}^{\′}\left(t\right)-\frac{2b_1}{s}y\left(t\right)+F_0---\left(6\right)$

definition of

$k_g=\frac{2b_1}{s}---\left(7\right)$

As a preferred or alternative embodiment, the stiffness of each leaf spring of the leaf spring assembly in the axial direction of the piston satisfies the formula:

ω_n＝[(nk_m+k_g)(m_s+m_ss+m_d+m_sd)]/[(m_s+m_ss)(m_d+m_sd)]. In the formula:

k_mthe rigidity of each plate spring 711 in the axial direction of the piston 620; n is the number of leaf springs 711; nk k_mThe total stiffness of all the plate springs 711 in the axial direction of the piston 620; k is a radical of_gIs the equivalent stiffness of the gas in the compression chamber; m is_sIs a stationary part mass fixedly connected with the cylinder structure; m is_ssA mass equivalent to the stationary member for the n plate springs 711; m is_dIs a moving part mass fixedly connected with the piston; m is_sdEquivalent to the moving part mass for n plate springs 711; omega_nIs the natural frequency of the compressor vibration system.

Mass (m) of an integrated design compressor assembly_s+m_ss+m_d+m_sd) And the total stiffness nk of all leaf springs in the axial direction of the piston_mEnsuring the natural frequency omega of the compressor vibration system_nIn line with the compressor operating demand frequency ω to maximize compressor efficiency.

The utility model discloses still relate to an air conditioner, including the compressor of any above-mentioned embodiment.

The utility model discloses a cylinder assembly, compressor and air conditioner, through the equipment that sets up assembly structure realization cylinder assembly, and in the cylinder guide hole was arranged in to the guide pillar, the length of guide pillar was greater than the degree of depth of cylinder guide hole, guaranteed the compressor at the operation in-process, cylinder structure suspends all the time in jar frame construction, cylinder structure can be from the position of self-adaptation piston, thereby guaranteed that the piston has better axiality with the cylinder in the compressor assembly process, thereby reduced the abnormal wear between piston and the cylinder structure, the friction loss between piston and the cylinder structure has been reduced, the performance of compressor has been improved.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (14)

1. A cylinder assembly, comprising:

the cylinder frame structure (100), wherein a cylinder mounting hole (110) is formed in the cylinder frame structure (100);

the cylinder structure (200) is provided with a cylinder guide hole (210) corresponding to the cylinder mounting hole (110); and

a mounting structure (300), wherein the mounting structure (300) comprises a fastening screw (320) and a hollow guide post (310), the guide post (310) is arranged in the cylinder guide hole (210), and the length of the guide post (310) is greater than the depth of the cylinder guide hole (210);

the fastening screw (320) penetrates through the hollow part of the guide post (310) to be matched with the cylinder mounting hole (110), so that the cylinder structure (200) is fixed on the cylinder frame structure (100).

2. The cylinder assembly of claim 1, characterized in that the difference between the diameter of the cylinder guide hole (210) and the outer diameter of the guide post (310) is 0.01mm to 0.06mm, and the difference between the length of the guide post (310) and the depth of the cylinder guide hole (210) is 0.01mm to 0.1 mm.

3. The cylinder assembly of claim 1, wherein the fastening screw (320) has a stop surface diameter greater than the diameter of the cylinder guide bore (210), and the difference between the stop surface diameter of the fastening screw (320) and the diameter of the cylinder guide bore (210) is at least 0.5 mm.

4. The cylinder assembly according to any one of claims 1-3, further comprising an exhaust structure (400), said exhaust structure (400) being fixedly mounted on said cylinder structure (200).

5. A compressor, characterized by comprising a stator assembly (500), a moving assembly (600), a plate spring assembly (700) and a cylinder assembly according to any one of claims 1-4;

the stator assembly (500) comprises a motor stator (510) and a stator fixing plate (520), the motor stator (510) and the stator fixing plate (520) are sequentially arranged on the cylinder frame structure (100), a fixing plate fixing hole (521) is formed in the stator fixing plate (520), a cylinder frame fixing hole (120) corresponding to the fixing plate fixing hole (521) is formed in the cylinder frame structure (100), and the stator assembly (500) is fixed on the cylinder frame structure (100) through a first fixing structure (530) which sequentially penetrates through the fixing plate fixing hole (521) and the cylinder frame fixing hole (120);

the moving assembly (600) comprises a motor rotor (610) and a piston (620), one end of the piston (620) is fixedly connected with the motor rotor (610), the other end of the piston (620) is embedded in the cylinder assembly, a compression cavity (880) is formed by the piston and the inner wall of the cylinder structure (200), the motor rotor (610) is arranged on a closed alternating magnetic path formed by the motor stator (510), and the motor rotor (610) can drive the piston (610) to reciprocate relative to the cylinder assembly;

the plate spring assembly (700) is fixed on the moving assembly (600), and the plate spring assembly (700) is fixedly connected with the stator assembly (500).

6. The compressor of claim 5, wherein the moving assembly (600) further comprises a connector (630), the connector (630) is fixedly connected with the motor mover (610) and the piston (620), and the plate spring assembly (700) is disposed on the connector (630).

7. The compressor of claim 6, wherein the coupling member (630) is provided with a coupling member fixing hole (631), the motor mover (610) is provided with a mover fixing hole (611) corresponding to the coupling member fixing hole (630), the piston (620) is provided with a piston fixing hole (621) corresponding to the mover fixing hole (611), and the coupling member (630) is fixed to the moving assembly (500) by a second fixing structure (640) sequentially penetrating the coupling member fixing hole (631), the mover fixing hole (611), and the piston fixing hole (621).

8. The compressor of claim 6, wherein the plate spring assembly (700) comprises a plurality of plate springs (710), the plurality of plate springs (710) are arranged to overlap each other, and the plate springs (710) comprise two elastic arms (711) and a fixing part (712) for installation and positioning;

the two elastic arms (711) have the same structure and are formed by tangency of a plurality of pairs of concentric arcs or eccentric arcs; the radiuses of the plurality of pairs of concentric circular arcs or eccentric circular arcs are gradually increased from inside to outside, the centers of all the concentric circular arcs or eccentric circular arcs are on the same straight line, a pair of concentric circular arcs or eccentric circular arcs positioned at the outermost ring is not more than a half ring, and the rest pairs of concentric circular arcs or eccentric circular arcs are half rings;

the initial ends of the two elastic arms (711) are tangent, an inner fixing hole (7110) is formed in the joint of the two elastic arms (711), the two elastic arms (711) are uniformly distributed by taking the inner fixing hole (7110) as the center, and the gap between the two elastic arms (711) is 0.1-0.5 time larger than the thickness of the elastic arms (711);

the tail ends of the two elastic arms (711) are respectively connected with the fixing part (712).

9. The compressor of claim 8, wherein the fixed portion (712) is a circular fixed ring;

the inner fixing hole (7110) is positioned in the center of the fixing part (712), and the two elastic arms (711) take the center of the fixing part (712) as a starting end and spirally extend towards the periphery of the fixing part (712); the tail ends of the two elastic arms (711) are respectively in transition connection with the fixing part (712) through arcs; the fixing part (712) is provided with an external fixing hole (7120).

10. The compressor of claim 9, wherein the connecting member (630) is further provided with a connecting post (633) adapted to fit the inner fixing hole (7110), the plurality of leaf springs (710) are sequentially sleeved on the connecting post (633) through the inner fixing hole (7110), and the leaf spring assembly (700) is fixedly connected to the connecting member (630) through a third fixing structure (720);

the stator fixing plate (520) is provided with fixing plate screw holes (523) corresponding to the outer fixing holes (7120) one to one, and the plate spring assembly (700) is fixed on the stator assembly (500) through a fourth fixing structure (540) which sequentially penetrates through the outer fixing holes (7120) in the plate spring (710) and the fixing plate screw holes (523).

11. The compressor of any one of claims 8 to 10, wherein a plurality of the plate springs (710) have spacers disposed therebetween, the spacers being an inner spacer (740) disposed at the inner fixing hole (7110) and an outer spacer (750) disposed at the outer fixing hole (7120), respectively.

12. Compressor according to any of claims 6 to 10, characterized in that the connecting piece (630) is further provided with a ventilation relief (635) and a suction through-flow (634) adapted to communicate with the suction hole of the piston (620).

13. Compressor according to any of claims 5-10, characterized in that the variation of the gas force of the piston (620) during one working cycle satisfies the following formula:wherein, definek_gEquivalent gas stiffness as the gas force in period T;

wherein,s is the stroke of the piston in the cylinder assembly,y' (t) is the first derivative of y (t), and d (t) is the derivative of the time t during which the piston moves within the cylinder assembly.

14. An air conditioner characterized by comprising the compressor of any one of claims 5 to 13.