Housing, rotary compressor, refrigeration device and assembly method

Abstract

The application provides a shell, a rotary compressor, a refrigeration device and an assembling method of the rotary compressor. The shell is applied to the rotary compressor. An installation cavity is formed in the shell. A limiting groove is arranged on a cavity wall of the installation cavity. The limiting groove extends along a circumferential direction of the shell and is used for clamping a pump body of the rotary compressor. The technical scheme can reduce vibration of the rotary compressor during operation, avoid deformation of a sliding vane groove of the pump body, and ensure performance stability and service life of the rotary compressor.

Description

Technical Field

[0001] This invention relates to the field of rotary compressor technology, and particularly to a housing, a rotary compressor, a refrigeration device, and a method for assembling the rotary compressor. Background Technology

[0002] Currently, rotary compressors typically consist of a housing and a pump body housed within the housing. The pump body and housing are often connected and fixed by welding. This connection method can easily lead to deformation of the pump body's vane groove, affecting the pump's operation. At the same time, excessive rigidity in the connection between the housing and the pump body can cause excessive tangential vibration of the housing during rotary compressor operation, affecting the performance and service life of the rotary compressor. Summary of the Invention

[0003] The main objective of this invention is to provide a housing, a rotary compressor, a refrigeration device, and an assembly method for the rotary compressor, which aims to reduce vibration during operation of the rotary compressor, prevent deformation of the pump body's vane groove, and ensure the stable performance and service life of the rotary compressor.

[0004] To achieve the above objectives, the present invention provides a housing for a rotary compressor, wherein an installation cavity is formed within the housing, and a limiting groove is provided on the cavity wall of the installation cavity. The limiting groove extends circumferentially along the housing and is used to engage the pump body of the rotary compressor.

[0005] In one embodiment of this application, the limiting groove is arranged circumferentially around the housing.

[0006] In one embodiment of this application, the cavity wall is provided with at least two limiting ribs spaced apart along the height direction of the housing. The limiting ribs are arranged around the circumference of the mounting cavity, and a limiting groove is formed between two adjacent limiting ribs.

[0007] In one embodiment of this application, the pump body and the limiting groove are interference-fitted in the cross-sectional direction of the mounting cavity.

[0008] In one embodiment of this application, the width of the limiting rib is set to decrease from the cavity wall toward the direction away from the cavity wall.

[0009] In one embodiment of this application, the minimum diameter of the ring formed by the limiting rib is defined as d, the diameter of the mounting cavity is defined as D, and the diameter of the pump body portion that is engaged in the limiting groove is defined as d1, satisfying d+0.01mm≤d1≤d+0.015mm≤D.

[0010] In one embodiment of this application, the minimum diameter of the ring formed by the limiting rib is defined as d, and the diameter of the mounting cavity is defined as D, satisfying 2mm≤Dd≤3mm.

[0011] In one embodiment of this application, the thickness of the shell is defined as t, the minimum diameter of the ring formed by the limiting rib is defined as d, and the diameter of the mounting cavity is defined as D, satisfying t≥(Dd)+0.5mm.

[0012] In one embodiment of this application, the outer surface of the limiting rib is an arc surface.

[0013] In one embodiment of this application, the housing further includes a connecting pipe, which passes through the shell wall of the housing and is inserted into the suction port of the pump body.

[0014] This application also proposes a rotary compressor, said rotary compressor comprising:

[0015] The casing as described in any of the preceding items; and

[0016] The pump body is disposed in the mounting cavity of the housing, and a limiting part is formed on the side of the pump body, which is engaged in the limiting groove.

[0017] In one embodiment of this application, the cavity wall of the mounting cavity is provided with at least two limiting ribs spaced apart along the height direction of the housing, and the limiting groove is formed between two adjacent limiting ribs;

[0018] The center distance between two adjacent limiting ribs is defined as h, and the thickness of the limiting part is T, satisfying h≥T+2mm.

[0019] In one embodiment of this application, the edge of the limiting portion is formed with a guide slope.

[0020] In one embodiment of this application, the pump body includes:

[0021] A cylinder body, wherein an inner cavity is formed within the cylinder body, and at least one end of the cylinder body along the height direction of the housing has an opening communicating with the inner cavity; and

[0022] A cover body, the cover body being disposed over the opening of the cylinder body;

[0023] The limiting part is formed by the periphery of the cylinder body and / or the periphery of the cover body, and is engaged in the limiting groove.

[0024] In one embodiment of this application, the rotary compressor further includes a motor, the motor including a stator and a rotor, the rotor being connected to the crankshaft of the pump body;

[0025] The cavity wall of the mounting cavity is provided with a snap-fit ​​groove, which extends circumferentially along the mounting cavity, and at least part of the stator is snapped into the snap-fit ​​groove.

[0026] This application also proposes a refrigeration device, which includes a rotary compressor as described in any of the preceding claims.

[0027] This application also proposes an assembly method for a rotary compressor, applied to the aforementioned rotary compressor, the assembly method comprising the following steps:

[0028] Heat the housing to the preset temperature;

[0029] Place the pump body into the mounting cavity of the housing, and align the limiting part of the pump body with the limiting groove of the housing.

[0030] Cool the housing.

[0031] The technical solution of this invention allows the pump body of the rotary compressor to be secured in a limiting groove on the inner wall of the housing, thereby fixing the pump body within the mounting cavity of the housing. In this case, the pump body and the housing are connected by a flexible connection. Compared to the traditional welded rigid connection method, the flexible connection structure results in lower connection rigidity between the pump body and the housing. This flexible connection structure can mitigate vibration, thereby reducing the vibration energy transmitted from the pump body to the housing during operation, reducing the tangential vibration of the housing during the operation of the rotary compressor, and avoiding the deformation problem of the pump body vane groove that occurs with traditional welded connections. This ensures the performance and service life of the rotary compressor. Furthermore, compared to traditional welding methods, the assembly method of this application can improve the assembly efficiency of the rotary compressor and increase production efficiency. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 This is a structural diagram of an embodiment of the rotary compressor of the present invention;

[0034] Figure 2 for Figure 1 Cross-sectional view of a rotary compressor with the liquid receiver removed;

[0035] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0036] Figure 4 for Figure 2 A cross-sectional view of the casing of a rotary compressor;

[0037] Figure 5 for Figure 2A cross-sectional view of the pump body of a rotary compressor;

[0038] Figure 6 This is a flowchart of an embodiment of the assembly method of the rotary compressor of the present invention.

[0039] Explanation of icon numbers:

[0040] label name label name 100 rotary compressor 313 air intake 10 case 33 Cover 11 Mounting cavity 35 slider 13 Limiting groove 36 Roller 15 Limiting ribs 37 crankshaft 17 Card slot 38 Guide slope 18 Reinforcing bar 50 motor 19 Connecting pipe 51 stator 30 pump body 53 rotor 31 Cylinder block 70 reservoir 311 inner cavity 71 catheter

[0041] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0043] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0046] The present invention provides a housing 10 for a rotary compressor 100, the rotary compressor 100 including a housing 10 and a pump body 30.

[0047] Please refer to Figures 2 to 4 In some embodiments of the housing 10 of this application, an installation cavity 11 is formed inside the housing 10, and a limiting groove 13 is provided on the cavity wall of the installation cavity 11. The limiting groove 13 extends along the circumference of the housing 10 and is used to engage the pump body 30 of the rotary compressor 100.

[0048] The rotary compressor 100 proposed in this application has a housing 10, which is used in the rotary compressor 100. The rotary compressor 100 generally includes a housing 10 and a pump body 30 disposed within the housing 10. The housing 10 has a mounting cavity 11 formed therein, which can be used to install components such as a motor 50 and the pump body 30. The pump body 30 includes a cylinder 31 and a cover 33 covering an opening on the end face of the cylinder 31. The cover 33 can be a bearing or a partition. The cylinder 31 has an inner cavity 311 and a vane groove formed therein. The vane groove communicates with the inner cavity 311 for sliding vanes 35. The pump body 30 also includes rollers 36 that are eccentrically rolled in the inner cavity 311 and a crankshaft 37 that passes through the cover 33 and is connected to the rollers 36. One end of the crankshaft 37 The main shaft is connected to the output shaft of the motor 50. The other end of the main shaft is inserted into a cover 33 and into a roller 36. The roller 36 has a sleeve hole. With this configuration, the crankshaft 37 can rotate under the drive of the motor 50 and drive the roller 36 to roll eccentrically in the inner cavity 311. In the inner cavity 311, one end of the slide 35 abuts against the roller 36 to separate the inner cavity 311 into an intake chamber and an exhaust chamber. The intake chamber has an intake hole 313 to absorb low-pressure refrigerant, and the exhaust chamber has an exhaust hole. When the roller 36 is propelled by the crankshaft 37 and rolls, the volume of the intake chamber and the exhaust chamber changes continuously, so that after the intake chamber draws in air, the low-pressure refrigerant is compressed into high-pressure refrigerant in the exhaust chamber and then discharged.

[0049] Furthermore, in this embodiment, a limiting groove 13 is formed on the cavity wall of the mounting cavity 11. The limiting groove 13 extends at least part of the circumferential direction along the mounting cavity 11. At the same time, a limiting part is formed on the outer side wall of the pump body 30. When the pump body 30 is installed in the mounting cavity 11, the limiting part is engaged in the limiting groove 13 to fix the pump body 30 in the mounting cavity 11. It can be understood that compared with the connection method of welding the pump body 30 to the housing 10, the matching structure of the limiting part and the limiting groove 13 can reduce the connection stiffness between the pump body 30 and the housing 10. At this time, when the rotary compressor 100 is operating, the vibration energy of the pump body 30 and the motor 50 will not be completely transmitted to the housing 10, thereby reducing the vibration of the housing 10 and playing a role in mitigating vibration. At the same time, it also avoids the problem of deformation of the pump body 30 sliding vane groove caused by welding, so that the pump body 30 can operate normally, ensuring the performance stability and service life of the rotary compressor 100.

[0050] It should be noted that in this embodiment, the limiting groove 13 formed on the cavity wall of the mounting cavity 11 can be formed by recessing on the cavity wall of the mounting cavity 11, or it can be formed by protruding limiting ribs 15 on the cavity wall in the following embodiment. No specific limitation is made here.

[0051] Therefore, it is understood that the technical solution of the present invention allows the pump body 30 of the rotary compressor 100 to be engaged in the limiting groove 13 on the inner wall of the housing 10, thereby fixing the pump body 30 in the mounting cavity 11 of the housing 10. At this time, the pump body 30 and the housing 10 are softly connected. Compared with the traditional welding hard connection method, the soft connection structure makes the connection rigidity between the pump body 30 and the housing 10 lower. The soft connection structure can play a role in reducing vibration, thereby reducing the vibration energy transmitted to the housing 10 when the pump body 30 is running, reducing the tangential vibration of the housing 10 when the rotary compressor 100 is working, and avoiding the problem of deformation of the pump body 30 sliding vane groove when the traditional welding connection occurs, thus ensuring the performance and service life of the rotary compressor 100.

[0052] Please refer to Figure 4 In some embodiments of the housing 10 of the rotary compressor 100 of this application, the limiting groove 13 is arranged around the circumference of the housing 10.

[0053] In this embodiment, the limiting groove 13 is arranged around the circumference of the mounting cavity 11 to increase the contact area between the pump body 30 and the limiting groove 13, improve the installation strength of the pump body 30 in the housing 10, and ensure that the pump body 30 is supported and limited by the groove wall of the limiting groove 13 at different circumferential positions, thereby improving the stability of the pump body 30 installed in the mounting cavity 11.

[0054] Please refer to Figure 3In some embodiments of the housing 10 of the rotary compressor 100 of this application, the cavity wall is provided with at least two limiting ribs 15 spaced apart along the height direction of the housing 10. The limiting ribs 15 are arranged around the circumference of the mounting cavity 11, and the limiting groove 13 is formed between two adjacent limiting ribs 15.

[0055] Understandably, compared to the structure of the limiting groove 13 formed by removing material, the method of protruding limiting ribs 15 on the cavity wall of the mounting cavity 11 can avoid the decrease in the structural strength of the housing 10 due to the thinning of the housing 10 wall thickness caused by material removal. In this embodiment, at least two limiting ribs 15 are protruding on the cavity wall of the mounting cavity 11, so that the limiting groove 13 is formed between two adjacent limiting ribs 15. This setting avoids the decrease in the strength of the housing 10 due to the setting of the limiting groove 13. At this time, the cross-sectional area of ​​the mounting cavity 11 can be larger than the cross-sectional area of ​​the pump body 30, while the cross-sectional area of ​​the limiting rib 15 is smaller than the cross-sectional area of ​​the pump body 30. This setting facilitates the adjustment and placement of the pump body 30 in the mounting cavity 11. It can also limit the height of the pump body 30 after assembly by using the limiting ribs 15, thereby improving the positional stability of the pump body 30 after assembly and the overall structural stability of the rotary compressor 100. In addition, compared with traditional welding methods, the assembly method of this application can improve the assembly efficiency of the rotary compressor 100 and increase production efficiency.

[0056] In some embodiments of the housing 10 of the rotary compressor 100 of this application, the pump body 30 and the limiting groove 13 are interference-fitted in the cross-sectional direction of the mounting cavity 11.

[0057] Understandably, in the rotary compressor 100, the pump body 30 is installed in the mounting cavity 11 of the housing 10, and the cylinder 31 of the pump body 30 needs to maintain a stable position. This application uses the cooperation of the limiting part and the limiting groove 13 to fix the pump body 30 in the mounting cavity 11. Further, in this embodiment, when the limiting part is engaged with the limiting groove 13, the pump body 30 is interference-fitted with the housing 10 at the limiting part position, so that the pump body 30 is clamped by the inner wall of the housing 10 in the mounting cavity 11, thereby improving the positional stability of the pump body 30 in the mounting cavity 11. It should be noted that, using the installation structure of this embodiment, the limiting part of the pump body 30 can be inserted into the limiting groove 13, or the housing 10 can be heated first to expand the mounting cavity 11 of the housing 10 so as to adjust the position of the pump body 30 in the mounting cavity 11 and make the limiting part aligned with the limiting groove 13. Then the housing 10 is cooled, and the pump body 30 is clamped in the position of the limiting groove 13 by using the principle of thermal expansion and contraction.

[0058] Please refer to Figure 3In some embodiments of the housing 10 of the rotary compressor 100 of this application, the width of the limiting rib 15 is set to decrease from the cavity wall toward the direction away from the cavity wall.

[0059] It is understood that the limiting part of the pump body 30 is engaged in the limiting groove 13 formed by the two limiting ribs 15 to fix the pump body 30 in the mounting cavity 11. When installing the pump body 30, the limiting part needs to pass through the limiting ribs 15 and enter the limiting groove 13. In this embodiment, the limiting ribs 15 are reduced in size, so that the surface of the limiting ribs 15 forms a guide surface to guide the limiting part of the pump body 30 into the limiting groove 13, thereby improving the ease of installation of the pump body 30.

[0060] Furthermore, in some embodiments, the limiting part can be supported on the inner surface of the limiting rib 15 to avoid the limiting part abutting against the bottom wall of the limiting groove 13, thereby reducing the contact area between the pump body 30 and the housing 10, reducing the vibration energy transmitted from the pump body 30 to the housing 10 during operation, thus playing a vibration reduction role and preventing the housing 10 from generating large tangential vibrations.

[0061] In some embodiments of the housing 10 of the rotary compressor 100 of this application, the minimum diameter of the annulus formed by the limiting rib 15 is defined as d, the diameter of the mounting cavity 11 is D, and the diameter of the portion of the pump body 30 that is engaged with the limiting groove 13 is d1, satisfying d+0.01mm≤d1≤d+0.015mm≤D.

[0062] In the aforementioned embodiment, the pump body 30 with the limiting part is interference-fitted with the limiting groove 13. Specifically, the limiting rib 15 is arranged circumferentially around the housing 10. The diameter of the limiting rib 15 is defined as d, the cross-sectional diameter of the housing 10 mounting cavity 11 is defined as D, and the diameter of the pump body 30 at the limiting part position is defined as d1. To facilitate the movement of the pump body 30 in the mounting cavity 11, d1 is made smaller than D. The interference fit between the pump body 30 and the limiting rib 15 ensures that d1 is greater than d, and that 0.01mm ≤ d1 - d ≤ 0.15mm. This arrangement ensures the limiting... The part can be stably engaged in the limiting groove 13 and abut against the middle of the limiting rib 15, avoiding contact between the limiting part and the bottom wall of the limiting groove 13, reducing the contact area between the pump body 30 and the housing 10, reducing the vibration energy transmitted from the pump body 30 to the housing 10 during operation, so as to play a vibration reduction role and avoid the housing 10 from generating large tangential vibration; at the same time, it makes d+0.01mm≤d1, so as to avoid the limiting rib 15 being too low and unable to play a good limiting role for the limiting part, which would cause the limiting part to easily loosen.

[0063] In some embodiments of the housing 10 of the rotary compressor 100 of this application, the minimum diameter of the annulus formed by the limiting rib 15 is defined as d, and the diameter of the mounting cavity 11 is defined as D, satisfying 2mm≤Dd≤3mm.

[0064] In this embodiment, the cross-section of the mounting cavity 11 is approximately circular, and the limiting rib 15 is also an annular structure arranged around the circumference of the mounting cavity 11. The cross-sectional diameter of the mounting cavity 11 is defined as D, and the cross-sectional diameter of the limiting rib 15 is defined as d. Then, the height H of the limiting rib 15 is (Dd) / 2. It can be understood that if the height of the limiting rib 15 is too low, the limiting part is easy to fall out of the limiting groove 13 and cannot play a good role in limiting and fixing the pump body 30. If the height of the limiting rib 15 is too high, it will be difficult for the limiting part to be installed in the limiting groove 13. In this embodiment, the height of the limiting rib 15 is such that 1mm≤H=(Dd) / 2≤1.5mm, which means 2mm≤Dd≤3mm. H can be any value between 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm or 1mm to 1.5mm, and is not limited here. When the value of H is within the above range, it can ensure that the pump body 30 is stably limited and fixed in the mounting cavity 11, and also makes the disassembly and assembly of the pump body 30 easier.

[0065] In some embodiments of the housing 10 of the rotary compressor 100 of this application, the thickness of the housing 10 is defined as t, the minimum diameter of the limiting rib 15 is defined as d, and the diameter of the mounting cavity 11 is defined as D, satisfying t≥(Dd)+0.5mm.

[0066] Understandably, this application uses a limiting rib 15 protruding from the cavity wall of the mounting cavity 11 to form a limiting groove 13, in order to avoid the thinning of the shell wall thickness of the shell 10 due to the setting of the limiting groove 13, which would affect the structural strength of the shell 10. In this embodiment, the cross-section of the mounting cavity 11 is approximately circular, and the limiting rib 15 is also an annular structure arranged around the circumference of the mounting cavity 11. Let the diameter of the mounting cavity 11 be D, and the diameter of the limiting rib 15 be d. Then, the height H of the limiting rib 15 is H = (Dd) / 2. This ensures that the thickness t of the shell 10 satisfies t ≥ (Dd) + 0.5 mm. It can be understood that the limiting rib 15 protrudes from the inner wall of the mounting cavity 11. Therefore, the thickness of the shell 10 at the location of the limiting rib 15 should include the height of the limiting rib 15. That is, even at locations where the limiting rib 15 is not provided, the wall thickness t of the shell 10 should also satisfy t ≥ (Dd) / 2 + 0.5 mm. This arrangement ensures that the shell 10 has a sufficiently strong shell wall as its structural foundation to support the limiting rib 15 and meet the structural strength requirements of the shell 10, reducing the risk of shell 10 breakage and improving the service life and performance stability of the shell 10.

[0067] Please refer to Figure 3 In some embodiments of the housing 10 of the rotary compressor 100 of this application, the outer surface of the limiting rib 15 is an arc surface.

[0068] It is understood that the limiting part of the pump body 30 is engaged in the limiting groove 13 formed by the two limiting ribs 15 to fix the pump body 30 in the mounting cavity 11. When installing the pump body 30, the limiting part needs to pass through the limiting ribs 15 and enter the limiting groove 13. In this embodiment, the outer surface of the limiting ribs 15 is made into an arc surface so that the limiting part can enter the limiting groove 13 along the arc surface, thereby improving the ease of installation of the pump body 30.

[0069] Please refer to Figure 2 and Figure 4 In some embodiments of the housing 10 of the rotary compressor 100 of this application, the housing 10 further includes a connecting pipe 19, which passes through the housing wall of the housing 10 and is inserted into the suction port 313 of the pump body 30.

[0070] Understandably, the rotary compressor 100 proposed in this application is mainly used to draw in external refrigerant and compress the refrigerant in the pump body 30 before discharging it. Specifically, the rotary compressor 100 includes a liquid reservoir 70, a housing 10, and a pump body 30. The pump body 30 is disposed in the mounting cavity 11 of the housing 10. The pump body 30 includes a cylinder 31 and a cover 33 covering an opening at the end face of the cylinder 31. The cover 33 can be a bearing or a partition. An inner cavity 311 and a vane groove are formed inside the cylinder 31. The vane groove communicates with the inner cavity 311 for sliding of the vane 35. The pump body 30 also includes rollers 36 that are eccentrically rolled in the inner cavity 311 and a crankshaft 37 that passes through the cover 33 and is connected to the rollers 36. One end of the crankshaft 37 is drively connected to the output shaft of the motor 50, and the other end of the main shaft section is inserted into the cover 33 and into the rollers 36. The rollers 36 have socket holes. With this arrangement, the crankshaft 37 can be driven by the motor 50. Driven by the crankshaft 37, the pump body 30 rotates and causes the roller 36 to roll eccentrically in the inner cavity 311. In the inner cavity 311, one end of the sliding vane 35 abuts against the roller 36 to separate the inner cavity 311 into an intake chamber and an exhaust chamber. The intake chamber is provided with an intake hole 313. The housing 10 also includes a connecting pipe 19, which passes through the shell wall of the housing 10 and is inserted into the intake hole 313 of the pump body 30 to communicate with the intake chamber. The liquid reservoir 70 is located outside the housing 10 and is connected to the connecting pipe 19 through a conduit 71. At this time, the pump body 30 can absorb low-pressure refrigerant through the connecting pipe 19. The exhaust chamber is provided with an exhaust hole. When the roller 36 is turned by the crankshaft 37, the volume of the intake chamber and the exhaust chamber changes continuously, so that after the intake chamber draws in air, the low-pressure refrigerant is compressed into high-pressure refrigerant in the exhaust chamber and then discharged. That is, the connection pipe 19 facilitates the connection between the pump body 30 and the liquid reservoir 70, and also limits the pump body 30 to prevent it from being subjected to external forces or rotating circumferentially due to vibration during operation, thereby improving the positional stability of the pump body 30 in the mounting cavity 11 and ensuring the stable performance of the rotary compressor 100.

[0071] Please refer to Figure 1 This application also proposes a rotary compressor 100, which includes a pump body 30 and a housing 10 as described in any of the foregoing embodiments. Specifically, the housing 10 has a mounting cavity 11 formed therein, which can be used to mount components such as the motor 50 and the pump body 30, as shown in the reference. Figure 5The pump body 30 includes a cylinder 31 and a cover 33 covering an opening at the end face of the cylinder 31. The cover 33 can be a bearing or a partition. The cylinder 31 has an inner cavity 311 and a vane groove. The vane groove communicates with the inner cavity 311 for sliding vanes 35. The pump body 30 also includes rollers 36 that are eccentrically rolled in the inner cavity 311 and a crankshaft 37 that passes through the cover 33 and is connected to the rollers 36. One end of the crankshaft 37 is connected to the output shaft of the motor 50, and the other end of the main shaft section is inserted into the cover 33 and into the rollers 36. The rollers 36 have openings. The crankshaft 37 is provided with a socket, which allows the crankshaft 37 to rotate under the drive of the motor 50 and drive the roller 36 to roll eccentrically in the inner cavity 311. In the inner cavity 311, one end of the sliding plate 35 abuts against the roller 36 to separate the inner cavity 311 into an intake chamber and an exhaust chamber. The intake chamber has an intake hole 313 to absorb low-pressure refrigerant, and the exhaust chamber has an exhaust hole. When the roller 36 is propelled by the crankshaft 37 and rolls, the volume of the intake chamber and the exhaust chamber changes continuously, so that after the intake chamber draws in air, the low-pressure refrigerant is compressed into high-pressure refrigerant in the exhaust chamber and then discharged.

[0072] Furthermore, in this embodiment, a limiting groove 13 is formed on the cavity wall of the mounting cavity 11, and the limiting groove 13 extends at least partly circumferentially along the mounting cavity 11. Simultaneously, a limiting portion is formed on the outer wall of the pump body 30. When the pump body 30 is installed in the mounting cavity 11, the limiting portion engages in the limiting groove 13 to fix the pump body 30 in the mounting cavity 11. It is understandable that compared to welding the pump body 30 to the housing 10, the combination of the limiting portion and the limiting groove 13 reduces the connection stiffness between the pump body 30 and the housing 10. In this case, when the rotary compressor 100 operates, the vibration energy of the pump body 30 and the motor 50 will not be completely transmitted to the housing 10, thus reducing the vibration of the housing 10 and mitigating vibration, thereby ensuring the stable performance and service life of the rotary compressor 100.

[0073] It should be noted that in this embodiment, the limiting groove 13 formed on the cavity wall of the mounting cavity 11 can be formed by recessing it on the cavity wall, or by protruding limiting ribs 15 on the cavity wall as in the following embodiments. No specific limitation is made here. Since the rotary compressor 100 proposed in this application applies all the technical solutions in all the foregoing embodiments, it possesses at least all the beneficial effects brought by all the foregoing technical solutions, which will not be elaborated upon here.

[0074] Please refer to Figure 3 and Figure 4 In some embodiments of the rotary compressor 100 of this application, the cavity wall of the mounting cavity 11 is provided with at least two limiting ribs 15 spaced apart along the height direction of the housing 10, and the limiting groove 13 is formed between two adjacent limiting ribs 15.

[0075] The center distance between two adjacent limiting ribs 15 is defined as h, and the thickness of the limiting part is T, satisfying h≥T+2mm.

[0076] Understandably, this application fixes the pump body 30 in the mounting cavity 11 by engaging the limiting part of the pump body 30 with the limiting groove 13 formed by the two limiting ribs 15. In this case, the center distance between the two limiting ribs 15 forming the limiting groove 13 is h, and h is greater than the thickness T of the limiting part. This ensures that the limiting part is positioned between the central axes of the two limiting ribs 15 when engaged in the limiting groove 13, improving the stability of the fit between the limiting part and the limiting groove 13 and making it less likely for the limiting part to detach from the limiting groove 13. For example, in some embodiments, the width of the limiting ribs 15 decreases outward from the bottom of the limiting groove 13. In this case, the limiting part is positioned between the central axes of the two limiting ribs 15, ensuring that the limiting part is stably limited in the limiting groove 13, thus improving the connection strength between the pump body 30 and the housing 10.

[0077] Please refer to Figure 3 In some embodiments of the rotary compressor 100 of this application, the edge of the limiting portion is formed with a guide slope 38.

[0078] Similarly, in this embodiment, a guide slope 38 is formed at the edge of the limiting part so that when the limiting part enters the limiting groove 13, the guide slope 38 can abut against the limiting rib 15, and the housing 10 at the position of the limiting rib 15 gradually deforms and opens outward, so that the limiting part can smoothly enter the limiting groove 13, thereby improving the ease of installation of the pump body 30.

[0079] Please refer to Figure 2 , Figure 3 as well as Figure 5 In some embodiments of the rotary compressor 100 of this application, the pump body 30 includes:

[0080] A cylinder body 31, wherein an inner cavity 311 is formed within the cylinder body 31, and at least one end of the cylinder body 31 along the height direction of the housing 10 has an opening communicating with the inner cavity 311; and

[0081] A cover 33 is provided to cover the opening of the cylinder body 31;

[0082] The limiting part is formed by the periphery of the cylinder body 31 and / or the periphery of the cover body 33 and is engaged in the limiting groove 13.

[0083] In the aforementioned embodiment, a limiting part is provided on the outer side wall of the pump body 30 to fix the pump body 30 by engaging with the limiting part and the upper limiting groove 13 on the cavity wall of the housing 10. It is understood that the pump body 30 generally includes a cylinder 31, a cover 33, a sliding vane 35, a roller 36, and a crankshaft 37. The cylinder 31 has an inner cavity 311 and a sliding vane groove, which communicate with the inner cavity 311 for sliding of the sliding vane 35. The pump body 30 also includes a roller 36 eccentrically rolled in the inner cavity 311 and a crankshaft 37 passing through the cover 33 and connected to the roller 36. One end of the crankshaft 37 is connected to the output shaft of the motor 50, and the other end of the main shaft section is inserted into the cover 33 and into the roller 36. The roller 36 has a... With the socket, the crankshaft 37 can rotate under the drive of the motor 50, and drive the roller 36 to roll eccentrically in the inner cavity 311. In the inner cavity 311, one end of the sliding plate 35 abuts against the roller 36 to separate the inner cavity 311 into an intake chamber and an exhaust chamber. The intake chamber has an intake hole 313 to absorb low-pressure refrigerant, and the exhaust chamber has an exhaust hole. When the roller 36 is propelled by the crankshaft 37 and rolls, the volume of the intake chamber and the exhaust chamber changes continuously, so that after the intake chamber draws in air, the low-pressure refrigerant is compressed into high-pressure refrigerant in the exhaust chamber and then discharged.

[0084] In this embodiment, the periphery of the cylinder 31 or cover 33 of the pump body 30 can be formed into a limiting part that is engaged in the limiting groove 13. With this setting, the original structure of the pump body 30 can be used to fix the pump body 30 directly, avoiding the need for a complex structural design of the pump body 30.

[0085] Please refer to Figure 2 and Figure 4 In some embodiments of the rotary compressor 100 of this application, the rotary compressor 100 further includes a motor 50, the motor 50 including a stator 51 and a rotor 53, the rotor 53 being connected to the crankshaft 37 of the pump body 30;

[0086] The cavity wall of the mounting cavity 11 is provided with a snap-fit ​​groove 17, which extends circumferentially along the mounting cavity 11, and at least part of the stator 51 is snapped into the snap-fit ​​groove 17.

[0087] Understandably, a motor 50 is provided in the rotary compressor 100 to drive the crankshaft 37 of the pump body 30 to rotate, thereby enabling the pump body 30 to complete the actions of suction and compression exhaust. Generally, the motor 50 includes a stator 51 and a rotor 53. The stator 51 is fixedly connected to the housing 10, and the rotor 53 is used to connect to the crankshaft 37 of the pump body 30 and can rotate relative to the stator 51. In this embodiment, the outer wall of the stator 51 is provided with a snap-fit ​​part, and the cavity wall of the mounting cavity 11 is provided with a snap-fit ​​groove 17, so that the snap-fit ​​part is snapped into the snap-fit ​​groove 17 to limit and fix the motor 50 in the mounting cavity 11. With this configuration, the motor 50 and the mounting cavity 11 are softly connected. Compared with the hard connection method of welding the stator 51 to the inner wall of the housing 10, the soft connection structure makes the connection strength between the stator 51 and the housing 10 lower. At this time, when the rotor 53 rotates and causes the motor 50 to vibrate, the soft connection structure can play a vibration damping and buffering role, preventing the vibration energy from being completely transferred to the housing 10 and reducing the vibration of the housing 10.

[0088] It should be noted that in this embodiment, the snap-fit ​​groove 17 formed on the cavity wall of the mounting cavity 11 can be formed by recessing on the cavity wall of the mounting cavity 11, or it can be formed by protruding snap-fit ​​ribs 18 on the cavity wall in the following embodiment. No specific limitation is made here.

[0089] Furthermore, in some embodiments, the snap-fit ​​groove 17 is arranged circumferentially around the mounting cavity 11 to increase the contact area between the motor 50 and the snap-fit ​​groove 17, improve the installation strength of the motor 50 in the housing 10, and ensure that the motor 50 is supported and limited by the groove wall of the snap-fit ​​groove 17 at different circumferential positions, thereby improving the stability of the motor 50 installed in the mounting cavity 11.

[0090] In some embodiments, the cavity wall is provided with at least two snap-fit ​​ribs 18 spaced apart along the height direction of the housing 10. The snap-fit ​​ribs 18 are arranged around the circumference of the mounting cavity 11, and a snap-fit ​​groove 17 is formed between two adjacent snap-fit ​​ribs 18.

[0091] Understandably, compared to the method of removing material to form the snap-fit ​​groove 17, the method of protruding snap-fit ​​ribs 18 on the cavity wall of the mounting cavity 11 can avoid the decrease in the structural strength of the housing 10 due to the thinning of the housing 10 wall thickness caused by material removal. In this embodiment, at least two snap-fit ​​ribs 18 are protruding on the cavity wall of the mounting cavity 11, so that the snap-fit ​​groove 17 is formed between two adjacent snap-fit ​​ribs 18. This setting avoids the decrease in the strength of the housing 10 due to the setting of the snap-fit ​​groove 17. At this time, the cross-sectional area of ​​the mounting cavity 11 can be larger than the cross-sectional area of ​​the motor 50, while the cross-sectional area of ​​the annulus formed by the snap-fit ​​ribs 18 is smaller than the cross-sectional area of ​​the snap-fit ​​position of the motor 50. This setting facilitates the position adjustment and placement of the motor 50 in the mounting cavity 11. It can also limit the height of the motor 50 after assembly by using the snap-fit ​​ribs 18, thereby improving the positional stability of the pump body 30 after assembly and the overall structural stability of the rotary compressor 100.

[0092] In some embodiments, the motor 50 and the snap-fit ​​groove 17 are interference-fitted in the cross-sectional direction of the mounting cavity 11. This configuration ensures that when the snap-fit ​​portion of the motor 50 is engaged in the snap-fit ​​groove 17, the motor 50 is interference-fitted with the housing 10 at the snap-fit ​​position, causing the motor 50 to be clamped by the inner wall of the housing 10 within the mounting cavity 11. This strengthens the connection between the motor 50 and the housing 10, improves the stability of the motor 50's mounting position, and enhances the overall structural stability of the rotary compressor 100. It should be noted that, using the mounting structure of this embodiment, the snap-fit ​​portion of the motor 50 can be inserted into the snap-fit ​​groove 17. Alternatively, the housing 10 can be heated first to expand the mounting cavity 11 of the housing 10, allowing adjustment of the motor 50's position within the mounting cavity 11 and alignment of the snap-fit ​​portion with the snap-fit ​​groove 17. Then, the housing 10 can be cooled, utilizing the principle of thermal expansion and contraction to clamp the motor 50 in the snap-fit ​​groove 17.

[0093] In some embodiments, the width of the snap-fit ​​rib 18 is set to decrease from the cavity wall toward the direction away from the cavity wall.

[0094] It is understood that the snap-fit ​​part of the motor 50 snaps into the snap-fit ​​groove 17 formed by the two snap-fit ​​ribs 18 to fix the motor 50 in the mounting cavity 11. When installing the motor 50, the snap-fit ​​part needs to pass over the snap-fit ​​ribs 18 and enter the snap-fit ​​groove 17. In this embodiment, the snap-fit ​​ribs 18 are set in a reduced manner, so that the surface of the snap-fit ​​ribs 18 forms a guide surface to guide the snap-fit ​​part of the motor 50 into the snap-fit ​​groove 17, thereby improving the ease of installation of the motor 50.

[0095] Furthermore, in some embodiments, the snap-fit ​​portion can be supported on the inner surface of the snap-fit ​​rib 18 to avoid the snap-fit ​​portion abutting against the bottom wall of the snap-fit ​​groove 17, thereby reducing the contact area between the motor 50 and the housing 10, reducing the vibration energy transmitted from the motor 50 to the housing 10 when it is working, so as to play a vibration reduction role and prevent the housing 10 from generating large tangential vibrations.

[0096] Furthermore, in some embodiments, the shape and size of the snap-fit ​​rib 18, the thickness of the housing 10, and the cross-sectional dimensions of the mounting cavity 11 are limited by referring to the size limitation relationship of the limiting rib 15 in the above embodiments, so as to achieve similar beneficial effects as in the above embodiments, which will not be elaborated here.

[0097] This application also proposes a refrigeration device, which includes a rotary compressor 100 as described in any of the foregoing embodiments. The refrigeration device proposed in this application can be an air conditioner or a refrigerator, etc., and is not limited thereto. The structure of the rotary compressor 100 in the refrigeration device of this application refers to the foregoing embodiments and will not be repeated here. Since the refrigeration device proposed in this application applies all the technical solutions in all the foregoing embodiments, it has at least all the beneficial effects brought by all the foregoing technical solutions, which will not be elaborated here.

[0098] Please refer to Figure 6 This application also proposes an assembly method for a rotary compressor 100, the assembly method comprising the following steps:

[0099] Step S10: Heat the housing 10 to a preset temperature;

[0100] Step S30: Place the pump body 30 into the mounting cavity 11 of the housing 10, and make the limiting part of the pump body 30 correspond to the limiting groove 13 of the housing 10.

[0101] Step S50, cooling housing 10.

[0102] Understandably, this application fixes the pump body 30 in the mounting cavity 11 by engaging the limiting part of the pump body 30 in the limiting groove 13 on the inner wall of the housing 10. If force is directly applied to force the limiting part into the limiting groove 13, it is easy to damage the limiting part or the limiting rib 15. The assembly method of the rotary compressor 100 proposed in this embodiment adopts a heated assembly method when assembling the rotary compressor 100. That is, the housing 10 is heated to a certain temperature before the pump body 30 is installed. According to the principle of thermal expansion and contraction, after the housing 10 is heated, the cavity wall of the mounting cavity 11 and the limiting rib 15 can expand outward, increasing the cross-section of the mounting cavity 11. At this time, the pump body 30 can be smoothly placed into the mounting cavity 11 and the position of the pump body 30 is adjusted so that the limiting part corresponds to the limiting groove 13. After the housing 10 cools down, the limiting rib 15 and the housing 10 retract, so that the limiting part is engaged in the limiting groove 13, thereby completing the installation of the pump body 30. Compared with traditional welding methods, the assembly method of this application can improve the assembly efficiency of the rotary compressor 100 and increase production efficiency.

[0103] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A rotary compressor, characterized in that, The rotary compressor includes: The housing has an installation cavity formed inside it. The cavity wall of the installation cavity is provided with a limiting groove, which is arranged around the circumference of the housing. The cavity wall is provided with at least two limiting ribs that are spaced apart along the height direction of the housing. The limiting ribs are arranged around the circumference of the installation cavity, and the limiting groove is formed between two adjacent limiting ribs. The width of the limiting rib decreases from the cavity wall towards the direction away from the cavity wall, and the outer surface of the limiting rib is arc-shaped; and The pump body is disposed in the mounting cavity of the housing. A limiting part is formed on the side of the pump body. The limiting part is engaged in the limiting groove and abuts against the middle of the limiting rib to avoid the limiting part abutting against the bottom wall of the limiting groove. The pump body and the limiting groove are interference-fitted in the cross-sectional direction of the mounting cavity. The minimum diameter of the ring formed by the limiting rib is defined as d, the diameter of the mounting cavity is defined as D, and the diameter of the pump body portion that is locked in the limiting groove is defined as d1, satisfying d+0.01mm≤d1≤d+0.015mm≤D; Define the center distance between two adjacent limiting ribs as h, and the thickness of the limiting part as T, satisfying h≥T+2mm; The thickness of the shell is defined as t, which satisfies t≥(Dd)+0.5mm.

2. The rotary compressor as described in claim 1, characterized in that, The minimum diameter of the ring formed by the limiting rib is defined as d, and the diameter of the mounting cavity is defined as D, satisfying 2mm≤Dd≤3mm.

3. The rotary compressor as described in claim 1, characterized in that, The housing also includes a connecting pipe, which passes through the housing wall and is inserted into the air intake hole of the pump body.

4. The rotary compressor as described in claim 1, characterized in that, The edge of the limiting part is formed with a guide slope.

5. The rotary compressor as described in claim 1, characterized in that, The pump body includes: A cylinder body, wherein an inner cavity is formed within the cylinder body, and at least one end of the cylinder body along the height direction of the housing has an opening communicating with the inner cavity; and A cover body, the cover body being disposed over the opening of the cylinder body; The limiting part is formed by the periphery of the cylinder body and / or the periphery of the cover body, and is engaged in the limiting groove.

6. The rotary compressor as described in any one of claims 1 to 5, characterized in that, The rotary compressor also includes a motor, which includes a stator and a rotor, the rotor being connected to the crankshaft of the pump body; The cavity wall of the mounting cavity is provided with a snap-fit ​​groove, which extends circumferentially along the mounting cavity, and at least part of the stator is snapped into the snap-fit ​​groove.

7. A refrigeration device, characterized in that, The refrigeration equipment includes a rotary compressor as described in any one of claims 1 to 6.

8. A method for assembling a rotary compressor, applied to assembling a rotary compressor as described in any one of claims 1 to 6, characterized in that, The assembly method includes the following steps: Heating the housing to a preset temperature increases the cross-sectional area of ​​the housing's mounting cavity; Place the pump body into the mounting cavity of the housing, and align the limiting part of the pump body with the limiting groove of the housing. The housing is cooled to shrink, causing the limiting part to engage in the limiting groove.

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