Compressor sealing structure, compressor, air conditioning device, and vehicle

Abstract

The application provides a compressor sealing structure, a compressor, an air conditioning device and a vehicle. The compressor sealing structure comprises a shell, a first bearing and a first sealing ring. An annular structure is arranged on the inner wall of the shell. The hub of the first bearing extends into the annular structure and cooperates to form a first sealing groove. The first sealing ring is located in the first sealing groove. A first retainer ring is arranged on the outer periphery of the hub of the first bearing. The first retainer ring is located between the annular structure and the first sealing ring. The first retainer ring is in clearance fit with the annular structure. The compressor sealing structure provided by the application is characterized in that the first retainer ring is arranged on the outer periphery of the hub of the first bearing. When the compressor is working, the first sealing ring moves in a high-pressure-difference environment. The annular structure, the outer periphery of the hub of the first bearing and the first retainer ring are in contact with the first sealing ring to realize sealing. After the shell is assembled, the first retainer ring will not be hit even if there is a radial direction offset. The first retainer ring can prevent the first bearing from being blocked, and the phenomenon that the pump body is blocked can be prevented.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of compressors, and more particularly relates to a compressor sealing structure, a compressor, an air conditioning device and a vehicle. BACKGROUND

[0002] A compressor is an important component of a refrigeration device. When the compressor is working, a high pressure difference exists inside the shell of the compressor, and the bearing on the crankshaft and the shell need to be sealed. To meet the sealing requirement, a sealing structure in which a sealing groove is arranged in the shell and a sealing ring is arranged on the bearing is generally used in the prior art. When the bearing is installed on the shell, the sealing ring is pressed between the sealing groove and the bearing, so that the bearing and the shell are sealed. However, the cooperation gap between the shell and the bearing needs to be small, generally less than 0.3 mm, to prevent the sealing ring from being squeezed into the gap between the shell and the bearing under the high pressure difference and thus from being separated from the bearing. However, the small cooperation gap increases the difficulty of assembling the shell. SUMMARY

[0003] The purpose of the embodiments of the application is to provide a compressor sealing structure, a compressor, an air conditioning device and a vehicle to solve the technical problem that the shell and the bearing of the compressor are prone to interference, which increases the friction power consumption of the bearing and the crankshaft, and even causes the pump body to be blocked.

[0004] To achieve the above purpose, the technical scheme adopted by the application is as follows: a compressor sealing structure is provided, which comprises a shell, a first bearing, and a first sealing ring arranged on a hub of the first bearing. An annular structure is arranged on the inner wall of the shell. The hub of the first bearing extends into the annular structure and cooperates to form a first sealing groove. The first sealing ring is located in the first sealing groove. A first retainer ring is arranged on the outer periphery of the hub of the first bearing. The first retainer ring is located between the annular structure and the first sealing ring. The first retainer ring and the annular structure are in clearance fit.

[0005] In one embodiment, the first bearing, the first retainer ring and the annular structure satisfy the following condition: 0.3mm

[0006] In one embodiment, the first retainer ring and the outer periphery of the hub of the first bearing are in clearance fit.

[0007] In one embodiment, the gap between the first retaining ring and the outer circumferential surface of the hub of the first bearing is less than 3mm.

[0008] In one embodiment, the inner circumferential surface of the annular structure is provided with an annular boss, the hub of the first bearing extends into the annular boss and is in clearance fit with the annular boss, and S is the radial clearance distance between the hub of the first bearing and the annular boss.

[0009] In one embodiment, the annular boss has a first step surface and a second step surface connected perpendicularly, the first step surface is perpendicular to the axial direction of the shell, and the second step surface is in clearance fit with the outer circumferential surface of the hub of the first bearing.

[0010] In one embodiment, the radial width of the first retaining ring is less than 2mm.

[0011] In one embodiment, the outer circumferential surface of the hub of the first bearing is provided with a shoulder, and the first sealing ring is located between the shoulder and the first retaining ring.

[0012] In one embodiment, the compressor sealing structure further comprises a bracket and a second bearing, the bracket is sleeved on the outer periphery of the hub of the second bearing, and the shell is in sealing fit with the bracket.

[0013] In one embodiment, the compressor sealing structure further comprises a second sealing ring sleeved on the outer periphery of the hub of the second bearing, two second retaining rings are spaced apart and sleeved on the outer periphery of the hub of the second bearing, the second sealing ring is located between the two second retaining rings, a second sealing groove is formed in fit between the bracket and the outer circumferential surface of the hub of the second bearing, the outer circumferential surface of the second retaining ring has a radial clearance with the second sealing groove, and the two second retaining rings are located in the second sealing groove.

[0014] The compressor sealing structure provided by the present application has the following beneficial effects compared with the prior art. In the compressor sealing structure of the present application, the first retaining ring is sleeved on the outer periphery of the hub of the first bearing, so that the first sealing ring moves in a high pressure difference environment during the operation of the compressor, and the annular structure, the outer circumferential surface of the hub of the first bearing and the first retaining ring are respectively in contact with the first sealing ring to achieve sealing. The first retaining ring and the annular structure are in clearance fit in the radial direction, so that the first retaining ring will not be hit even if the shell is offset in the radial direction after assembly, and the phenomenon that the first retaining ring blocks the first bearing and the pump body is prevented, thereby effectively reducing the friction power consumption of the bearing and the crankshaft. At the same time, due to the arrangement of the first retaining ring, the first sealing ring is prevented from being squeezed into the gap between the annular structure and the first bearing in a high pressure difference environment, so that the first sealing ring is prevented from being separated from the first bearing, and the assembly gap between the annular structure and the first bearing can be set larger, thereby greatly reducing the assembly difficulty between the shell and the first bearing.

[0015] Another object of the present application is to provide a compressor comprising the compressor sealing structure.

[0016] The compressor provided by the present application has the beneficial effects that, compared with the prior art, the compressor provided by the present application can avoid the phenomenon of pump body suffocation, reduce the friction power consumption of the bearing and the crankshaft, and thus improve the performance of the compressor, while the setting of the first check ring reduces the assembly difficulty of the compressor components.

[0017] Another object of the present application is to provide an air conditioning device comprising the compressor.

[0018] The air conditioning device provided by the present application has the beneficial effects that, compared with the prior art, the air conditioning device provided by the present application can guarantee the reliability of the compressor sealing, avoid the phenomenon of pump body suffocation during the operation of the compressor, reduce the friction power consumption of the bearing and the crankshaft, and thus improve the performance of the air conditioning device, while the setting of the first check ring reduces the assembly difficulty of the compressor components.

[0019] Another object of the present application is to provide a vehicle comprising the air conditioning device.

[0020] The vehicle provided by the present application has the beneficial effects that, compared with the prior art, the vehicle provided by the present application can guarantee the sealing performance of the compressor in the air conditioning device, avoid the phenomenon of pump body suffocation during the operation of the compressor, reduce the friction power consumption of the bearing and the crankshaft, and thus improve the performance of the vehicle, while the setting of the first check ring reduces the assembly difficulty of the compressor components. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 Partially cutaway view of the compressor provided by an embodiment of the present application;

[0023] Figure 2 Enlarged schematic view of part A in FIG. Figure 1

[0024] Figure 3 Structural schematic view of the housing in the compressor shown in FIG. Figure 1

[0025] Figure 4 ​​Fig. 1 is a schematic view of a compressor according to an embodiment of the present application; Figure 3 Fig. 2 is an enlarged view of part B in Fig. 1;

[0026] Figure 5 Fig. 3 is a schematic view of a compressor according to another embodiment of the present application; Figure 1 Fig. 4 is a partial enlarged view of the compressor in operation according to the embodiment shown in Fig. 3;

[0027] Figure 6 Fig. 5 is a schematic view of a compressor according to another embodiment of the present application; Figure 2 Fig. 6 is a schematic view of the assembly structure of the first bearing and the first retainer according to the embodiment shown in Fig. 5;

[0028] Figure 7 Fig. 7 is a partial cross-sectional view of a compressor according to another embodiment of the present application;

[0029] Figure 8 Fig. 8 is a schematic view of a compressor according to another embodiment of the present application; Figure 7 Fig. 9 is an enlarged view of part C in Fig. 8;

[0030] Figure 9 Fig. 10 is a partial enlarged view of a compressor according to the related art.

[0031] In the drawings, reference numerals:

[0032] 100 - crankshaft; 22 - sealing groove; sealing ring - 40; 200 - housing; 300 - first bearing; 400 - pump body; 500 - bracket; 600 - second bearing; 201 - high-pressure cavity; 202 - first sealing groove; 210 - annular structure; 220 - annular boss; 211 - chamfer; 221 - first step surface; 222 - second step surface; 310 - first sealing ring; 320 - first retainer; 330 - shoulder; 410 - cylinder; 420 - partition; 501 - second sealing groove; 610 - second sealing ring; 620 - second retainer. DETAILED DESCRIPTION

[0033] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects more clearly understood, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] like Figure 9 As shown, in the related technology, a first bearing 300 is mounted on the crankshaft 100, and a sealing ring 40 is fitted on the outer circumferential surface of the first bearing 300. An annular structure 210 for assembling with the first bearing 300 is provided on the inner wall of the housing 200. The first bearing 300 has a hub and a flange located at one end of the hub. The flange extends radially outward from the hub and is fixed to the cylinder of the compressor. The annular structure 210 is located on the inner bottom surface of the housing 200. The inner circumferential surface of the annular structure 210 and the outer circumferential surface of the hub of the first bearing 300 are in clearance fit. The clearance S0 is relatively small, typically less than 0.3 mm. Therefore, the assembly between the housing 200 and the first bearing 300 is difficult and requires high precision. A sealing groove 22 is formed on the inner circumferential surface of the annular structure 210, and the sealing ring 40 is housed in the sealing groove 22. In this process, the sealing ring 40 is pressed between the sealing groove 22 and the outer peripheral surface of the first bearing 300 to achieve a seal. However, when the compressor is working, the crankshaft 100 and the first bearing 300 move together in the radial direction. This increases the clearance between the annular structure 210 of the housing 200 and the outer peripheral surface of the first bearing 300. Under the action of high pressure differential, the sealing ring 40 is easily squeezed into the gap between the annular structure 210 and the outer peripheral surface of the first bearing 300. The sealing ring 40 is easily damaged by compression or comes off the first bearing 300, resulting in a decrease or failure of sealing performance. At the same time, with this sealing structure, the frictional power consumption between the first bearing 300 and the crankshaft 100 is high. When the housing 200 is assembled in a radial offset, interference can easily occur between the annular structure 210 and the first bearing 300. In severe cases, it may even cause the pump body to be blocked, affecting the normal operation of the compressor.

[0038] Figure 1Part assemblies of the compressor are shown, including a crankshaft 100, a shell 200, a pump body 400 and a bracket 500, the shell 200 has an open end, the bracket 500 is in sealing fit with the open end of the shell 200, a high-pressure cavity 201 is defined between the bracket 500 and the shell 200, the pump body 400 is accommodated in the high-pressure cavity 201, the crankshaft 100 penetrates through the bracket 500, a motor can be installed on an end of the crankshaft 100 away from the pump body 400, the motor is connected with the pump body 400 through the crankshaft 100, and the motor can drive the pump body 400 to operate in the high-pressure cavity 201. The pump body 400 includes two cylinders 410, a partition plate 420, a first bearing 300 and a second bearing 600, the partition plate 420 is arranged between the two cylinders 410, and the first bearing 300 and the second bearing 600 are installed on the crankshaft 100 and fixed to end faces of the two cylinders 410 respectively.

[0039] Please refer to Figures 1 to 3The compressor sealing structure provided by the embodiment of the present application is described as follows. The compressor sealing structure comprises a housing 200, a first bearing 300 and a first sealing ring 310. The inner ring of the first bearing 300 is sleeved on the outer circumferential surface of the crankshaft 100. The end surface of one end of the crankshaft 100 can be arranged flush with the end surface of the hub of the first bearing 300. The hub of the first bearing 300 is provided with a chamfer 211 at the corner of the end away from the cylinder 410. The end of the crankshaft 100 close to the inner bottom surface of the housing 200 is provided with a chamfer 211, so as to facilitate the sleeving assembly of the first bearing 300 and other components. The first sealing ring 310 is sleeved on the outer circumferential surface of the first bearing 300, and specifically, the first sealing ring 310 is sleeved on the outer circumferential surface of the hub of the first bearing 300. The first sealing ring 310 can be made of elastic material, and specifically, an O-shaped rubber ring can be used. The O-shaped rubber ring has good repeated elastic deformation performance and low manufacturing and using cost. The inner wall of the housing 200 is provided with an annular structure 210. The annular structure 210 can be a structure formed by the concave or convex of the inner wall surface of the housing 200. The hub of the first bearing 300 extends into the annular structure 210. The hub of the first bearing 300 cooperates with the annular structure 210 to form a first sealing groove 202. The first sealing ring 310 extends into the first sealing groove 202. The outer circumferential surface of the hub of the first bearing 300 is sleeved with a first retainer 320. The first retainer 320 is arranged between the housing 100 and the first sealing ring 310. The outer diameter of the first retainer 320 is arranged to be smaller than the inner diameter of the first sealing groove 202, i.e., the radial direction between the first retainer 320 and the annular structure 210 is arranged as a clearance fit. The first retainer 320 is located between the annular structure 210 and the first sealing ring 310. The axial distance between the first retainer 320 and the inner bottom surface of the housing 200 is smaller than the axial distance between the first sealing ring 310 and the inner bottom surface of the housing 200. The radial distance between the inner circumferential surface of the annular structure 210 and the outer circumferential surface of the hub of the first bearing 300 is smaller than the linear diameter of the first sealing ring 310. The first sealing ring 310 is squeezed between the first sealing groove 202 and the outer circumferential surface of the hub of the first bearing 300, so as to realize sealing. When the compressor works, the high-pressure-difference environment is formed in the housing 200 and on both sides of the first sealing ring 310. Due to the first retainer 320, the first sealing ring 310 moves towards the direction close to the inner bottom surface of the housing 200 (such as the F1 direction in the figure), the annular structure 210, the outer circumferential surface of the hub of the first bearing 300 and the first retainer 320 are respectively in contact with the first sealing ring 310, so as to realize sealing. Figure 1

[0040] ​Compared with the prior art, the compressor sealing structure provided in the application has the following advantages: the first retaining ring 320 is sleeved on the outer periphery of the first bearing 300, so that the first sealing ring 310 moves in a high-pressure-difference environment during the operation of the compressor, and the annular structure 210, the outer periphery of the hub of the first bearing 300 and the first retaining ring 320 are respectively in contact with the first sealing ring 310 to achieve sealing; the first retaining ring 320 and the annular structure 210 are in clearance fit in the radial direction, so that the first retaining ring 320 will not be contacted even if the shell 200 is offset in the radial direction after assembly, and the phenomenon that the first retaining ring 320 blocks the first bearing 300 and the pump body 400 is prevented, thereby effectively reducing the friction power consumption of the bearing and the crankshaft 100; at the same time, the assembly gap between the annular structure 210 and the first bearing 300 can be set to be larger, so that the assembly difficulty between the shell 200 and the first bearing 300 is greatly reduced.

[0041] In some other embodiments of the application, referring to Figures 1 to 2 , the first bearing 300, the first retaining ring 320 and the annular structure 210 satisfy the following conditions: 0.3mm<S<S1, wherein S is the radial gap distance between the first bearing 300 and the annular structure 210, and S1 is the radial gap distance between the outer periphery of the first retaining ring 320 and the annular structure 210. That is, the radial gap distance S between the annular structure 210 and the hub of the first bearing 300 is greater than 0.3mm, the radial gap distance S1 between the outer periphery of the first retaining ring 320 and the groove wall of the first sealing groove 202 parallel to the outer periphery of the hub of the first bearing is set to be greater than 0.3mm, and S1 is set to be greater than S, and the radial direction herein refers to the radial direction of the shell 200. Since S1 is set to be greater than S, after the first retaining ring 320 is added to the outer periphery of the first bearing 300, the annular structure 210 will not be contacted in the radial direction when the shell 200 is offset in the radial direction after assembly, thereby effectively avoiding the phenomenon that the pump body 400 is blocked when the shell 200 is offset during assembly.

[0042] Meanwhile, the first blocking ring 320 is arranged, so that the values of S and S1 can be designed to be larger, and the radial clearance distance between the annular structure 210 and the first bearing 300 is greater than 0.3 mm, so that the assembly difficulty between the shell 100 and the first bearing 300 is reduced, and the first sealing ring 310 is effectively prevented from being extruded into the gap between the shell 100 and the first bearing 300 under the environment of high pressure difference, so as to prevent the first sealing ring 310 from being separated from the first bearing 300. The compressor sealing structure in the embodiment can set the radial clearance distance S between the annular structure 210 and the hub of the first bearing 300 to be larger, so that the assembly difficulty between the shell 200 and the first bearing 300 is greatly reduced, and the shell 200 is not offset in the radial direction to collide with the first blocking ring 320 during assembly, so as to prevent the first blocking ring 320 from blocking the first bearing 300 and the pump body 400, and effectively reduce the friction power consumption of the bearing and the crankshaft 100.

[0043] In some other embodiments of the present application, the first blocking ring 320 is in clearance fit with the outer circumferential surface of the hub of the first bearing 300, the first blocking ring 320 can move back and forth along the hub axis direction on the hub of the first bearing 300, and the clearance value between the first blocking ring 320 and the outer circumferential surface of the hub of the first bearing 300 can be set according to specific application environment.

[0044] In some other embodiments of the present application, referring to Figure 2 and Figure 4 , the inner circumferential surface of the annular structure 210 is provided with an annular boss 220, and the first sealing groove 202 is close to the opening end of the annular structure 210; during assembly of the shell 200, the hub portion of the first bearing 300 extends into the space surrounded by the annular boss 220, the hub of the first bearing 300 is in clearance fit with the annular boss 220, and the radial clearance distance between the hub of the first bearing 300 and the annular boss 220 is S; the first sealing ring 310 is compressed between the annular structure 210 and the outer circumferential surface of the hub of the first bearing 300, and after the shell 200 is assembled with the bracket 500, the first sealing ring 310 and the first blocking ring 320 have a gap, and the first blocking ring 320 and the annular boss 220 have a gap.

[0045] In some other embodiments of the present application, referring to Figure 2 , Figure 4 and Figure 5The surface of the annular boss 220 comprises a first step surface 221 and a second step surface 222 connected perpendicularly, the first step surface 221 is perpendicular to the axial direction of the shell 200, and the second step surface 222 is parallel to the axial direction of the shell 200, and the groove wall in the first sealing groove 202 parallel to the axial direction of the shell 200 and the first step surface 221 form the first sealing groove 202. The junction of the first step surface 221 and the second step surface 222 is provided with a smooth transition, and the junction of the first step surface 221 and the inner wall surface of the annular structure 210 is also provided with a smooth transition; the second step surface 222 is in clearance fit with the outer peripheral surface of the hub of the first bearing 300, and the radial clearance distance S between the two is greater than 0.3 mm, and the first step surface 221, the inner peripheral surface of the annular structure 210 close to the open end, and the outer peripheral surface of the hub of the first bearing 300 form the first sealing groove 202; the first retainer ring 320 can move along the axial direction (such as the F1 direction) of the hub of the first bearing 300, and during the operation of the compressor, the first retainer ring 320 moves to abut against the first step surface 221. Figure 1

[0046] Specifically, as shown in Figure 2 Figure 5 , during the operation of the compressor, the first retainer ring 320 moves to abut against the first step surface 221 along the F1 direction, and the groove wall in the first sealing groove 202 parallel to the axial direction of the shell 200, the first retainer ring 320, the outer peripheral surface of the hub of the first bearing 300, and the first step surface 221 are in contact with the first sealing ring 310, and the first sealing ring 310 is squeezed by the above four surfaces at this time, and the first retainer ring 320 abuts against the first step surface 221 at this time, so that sealing is achieved; the arrangement of the first retainer ring 320 and the first sealing ring 310 can adapt to the dynamic sealing requirements during the operation of the compressor. That is, in a high-pressure-difference environment, the first sealing ring 310 is pushed by the gas to move to contact the first retainer ring 320, and at the same time drives the first retainer ring 320 sleeved on the hub of the first bearing 300 to move along the F1 direction, and the first retainer ring 320 no longer moves when it abuts against the first step surface 221, and the first sealing ring 310 is elastically deformed at this time, and part of it is squeezed into the radial clearance between the inner peripheral surface of the annular structure 210 and the first retainer ring 320, and is in contact with the first step surface 211, so that the first sealing ring 310 is squeezed by four surfaces, and sealing is achieved; the first sealing ring 310 cannot be separated from the first bearing 300 due to the blocking action of the first retainer ring 320, which not only achieves effective sealing, but also prevents the phenomenon of pump body suffocation.

[0047] In some other embodiments of the present application, refer to Figure 2 ​​The first bearing 300 is provided with a shoulder 330 on the outer circumferential surface of the hub, the shoulder 330 is integrally formed with the first bearing 300, and the radial width of the shoulder 330 can be greater than or equal to the line diameter of the first sealing ring 310, so that the shoulder 330 will not be contacted when the shell 200 is assembled. The first sealing ring 310 is located between the shoulder 330 and the first retainer 320. The setting of the shoulder 330 can limit the assembly position of the first sealing ring 310 on the outer circumferential surface of the hub of the first bearing 300, so that after the shell 200 is assembled, the first sealing ring 310 can be always pressed between the annular structure 210 and the outer circumferential surface of the hub of the first bearing 300, that is, the shoulder 330 limits the movement of the first sealing ring 310 away from the inner bottom surface of the shell 200 during assembly. The width of one side of the shoulder 330 is greater than the line diameter of the first sealing ring 310, and the axial distance between the shoulder 330 and the first retainer 320 is greater than the line diameter of the first sealing ring 310. In this way, the first sealing ring 310 is easy to install, and the first sealing ring 310 can slide back and forth between the shoulder 330 and the first retainer 320. Under the action of high pressure difference, the first sealing ring 310 will move towards the first retainer 320.

[0048] In some other embodiments of the present application, referring to Figure 2 、 Figure 6 The radial gap distance S3 between the first retainer 320 and the outer circumferential surface of the hub of the first bearing 300 is less than 3mm, so that the first retainer 320 is more easily pushed by the first sealing ring 321, and then can slide along the outer circumferential surface of the hub of the first bearing 300. The first retainer 320 can more smoothly slide to abut and tightly fit the step surface corresponding to the annular boss 220, and the first sealing ring 310 slides together with the first retainer 320 to the direction of the annular boss 220 to achieve sealing. The fitting gap distance S3 between the first retainer 320 and the outer circumferential surface of the hub of the first bearing 300 can be specifically set to 0.5mm, 1.0mm, 1.5mm, 2.0mm, 2.5mm, 2.8mm.

[0049] In some other embodiments of the present application, the radial width of the first retainer 320 is less than 2mm, that is, the width parallel to the axis direction of the shell 200 is less than 2mm. When the radial width of the first retainer 320 is set in this range, when the first retainer 320 slides to abut the annular boss 220, the first sealing ring 310 is easy to abut the annular boss 220 on the corresponding side after being extruded and deformed, so that the first sealing ring 310 and the annular boss 220 are easy to achieve sealing. The radial width of the first retainer 320 can be specifically set to 0.4mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm.

[0050] In a specific embodiment, the radial width of the first retainer ring 320 is set to 1 mm, the fit clearance between the first retainer ring 320 and the outer circumferential surface of the hub of the first bearing 300 is set to 2 mm, and the radial clearance between the annular boss 220 and the first retainer ring 320 is set to 1 mm. During installation, the first seal ring 310 is sleeved on the outer circumferential surface of the hub of the first bearing 300, so that one side of the first seal ring 310 abuts against the shoulder 330 on the outer circumferential surface of the hub of the first bearing 300, then the first retainer ring 320 is sleeved on the outer circumferential surface of the hub of the first bearing 300, at this time the first retainer ring 320 has a spacing in the axial direction with the first seal ring 310, and finally the housing 200 is aligned with the crankshaft 100 for installation, the housing 200 is fixedly connected with the bracket 500, so that one end of the crankshaft 100 extends into the space surrounded by the annular boss 220, at this time the first step surface 221 has a clearance with the first retainer ring 320, and the second step surface 222 has a radial clearance with the outer circumferential surface of the hub of the first bearing 300; during operation of the compressor, the gas pressure in the housing 200 rises, forming a high-pressure differential environment on both sides of the first seal ring 310 parallel to the axial direction of the housing 200, so that the first seal ring 310 is pushed by the fluid and drives the first retainer ring 320 to move in the F1 direction to abut against the first step surface 221 of the annular boss 220.

[0051] Referring to Figure 2 and Figure 4 , the end surface of the annular structure 210 is provided with a chamfer 211, which is close to one side of the inner circumferential surface thereof. The chamfer 211 can be a straight chamfer or an arc-shaped chamfer. The provision of the chamfer 211 facilitates the assembly operation between the housing 200 and the first bearing 300, and also avoids scratching the first seal ring 310 during assembly of the housing 200.

[0052] In some other embodiments of the present application, referring to Figure 7 , the compressor sealing structure further comprises a bracket 500 and a second bearing 600. The bracket 500 is provided with a mounting hole in the center thereof, and the bracket 500 is sleeved on the outer circumferential surface of the hub of the second bearing 600 through the mounting hole. The hole wall of the mounting hole and the outer circumferential surface of the hub of the second bearing 600 are in clearance fit. The housing 200 has an open end, the outer diameter of the open end is substantially equal to the outer diameter of the bracket 500, and the end surface of the open end of the housing 200 is in sealing fit with the end surface of one side of the bracket 500 through a sealing gasket. The sealing gasket is clamped between the bracket 500 and the housing 200, and the sealing gasket can be a rubber gasket.

[0053] In some other embodiments of the present application, referring to Figure 7 and Figure 8The compressor sealing structure further comprises a second sealing ring 610. Two second retainer rings 620 are arranged on the outer circumferential surface of the hub of the second bearing 600 in an interval. The size profiles of the two second retainer rings 620 can be set to be completely same. The second bearing 600 and the second retainer rings 620 are coaxially arranged. The axial width between the two second retainer rings 620 is greater than the linear diameter of the second sealing ring 610. The second sealing ring 610 is sleeved on the outer circumferential surface of the hub of the second bearing 600. The second sealing ring 610 is located between the two second retainer rings 620. The second retainer ring 620 and the outer circumferential surface of the hub of the second bearing 600 are in clearance fit. The clearance between the two can be set to be less than 0.3 mm. The clearance between the two is less than the fit clearance S2 between the hole wall and the outer circumferential surface of the hub of the first bearing 300. The linear diameter of the second sealing ring 610 is set to be greater than the radial width of the second retainer ring 620. An annular groove is arranged on the hole wall. The annular groove and the outer circumferential surface of the hub of the second bearing 600 cooperatively form a second sealing groove 501. The two second retainer rings 620 and the second sealing ring 610 are located in the second sealing groove. The radial depth of the second sealing groove 501 is less than the linear diameter of the second sealing ring 610. The outer diameter of the second retainer ring 620 is less than the outer diameter of the second sealing groove 501. The two second retainer rings 620 extend into the second sealing groove 501. The second sealing ring 610 is clamped between the outer circumferential surface of the hub of the second bearing 600 and the groove bottom of the second sealing groove 501. The groove bottom at this position refers to the groove wall in the second sealing groove 501 which is parallel to the axis direction of the housing 200. The two sides of the second sealing ring 610 are provided with the second retainer rings 620. After the second sealing ring 610 is pushed by the airflow, effective sealing can be formed between the bracket 500 and the outer circumferential surface of the hub of the second bearing 600. That is, the outer circumferential surface of the hub of the second bearing 600, one of the second retainer rings 620, one of the axial side walls and one of the radial side walls of the second sealing groove 501, a total of four surfaces, respectively contact the second sealing ring 610 to realize sealing during the operation of the compressor. Since the outer circumferential surface of the hub of the second bearing 600 is sleeved with the second retainer ring 620, the bracket 500 is offset in the radial direction during assembly and does not contact the second retainer ring 620. The second retainer ring 620 is prevented from being blocked by the second bearing 600, and the phenomenon that the pump body 400 is blocked is prevented. The friction power consumption of the second bearing 600 and the crankshaft 100 is effectively reduced.

[0054] In assembling, the part of the crankshaft 100 close to the end of the inner bottom surface of the shell 200 is installed first, the pump body 400 is installed on the crankshaft 100, the first sealing ring 310 is sleeved on the outer circumferential surface of the hub of the first bearing 300, one side of the first sealing ring 310 abuts against the shoulder 330 on the outer circumferential surface of the hub of the first bearing 300, and then the first retainer ring 320 is sleeved on the outer circumferential surface of the hub of the first bearing 300; then the part of the crankshaft 100 at the other end is installed, one second retainer ring 620 is put into the second sealing groove 501 of the bracket 500, the second retainer ring 620 is adjusted and moved, the second sealing ring 610 is put into the second sealing groove 501, and then the other second retainer ring 620 is put into the second sealing groove 501 of the bracket 500, so that the second sealing ring 610 is located between the two second retainer rings 620, the bracket 500 provided with the two second retainer rings 620 and the second sealing ring 610 is sleeved on the crankshaft 100, and is fixed and installed on the shell 200 through the connecting piece, and thus the assembly is completed.

[0055] It can be understood that in assembling, the part of the crankshaft 100 away from the end of the inner bottom surface of the shell 200 can be installed first, the second sealing ring 610 and the two second retainer rings 620 are installed in the second sealing groove 501 of the bracket 500, the bracket 500 is sleeved on the crankshaft 100, then the part of the crankshaft 100 close to the end of the inner bottom surface of the shell 200 is installed, the first sealing ring 310 and the first retainer ring 320 are installed, and finally the shell 200 and the bracket 500 are fixed and installed, and thus the assembly is completed. The corner of the hub of the second bearing 600 away from the end of the shell 200 can be provided with a smooth transition, so that the bracket 500 is convenient to be sleeved on the crankshaft 100, the second sealing ring 610 is not easy to be scratched by the second bearing 600 in the process of being sleeved on the crankshaft 100, so that the second sealing ring 610 remains complete; the corner of the hub of the first bearing 300 close to the end of the inner bottom surface of the shell 200 can be provided with a smooth transition, so that the first sealing ring 310 is convenient to be installed, and the first sealing ring 310 is not easy to be scratched by the first bearing 300 when being sleeved on the first bearing 300, so that the first sealing ring 310 remains complete.

[0056] The compressor provided by the embodiment of the application comprises the compressor sealing structure of any one of the above embodiments. Please refer to Figure 7The compressor comprises a crankshaft 100, a housing 200, a first sealing ring 310, a first bearing 300, a support 500, a second sealing ring 610 and a second bearing 600, the first bearing 300 and the second bearing 600 are installed on the crankshaft 100, one end of the crankshaft 100 passes through the first bearing 300 and is connected with the pump body 400, the support 500 is sleeved on the second bearing 600 and the end surface thereof is sealed and matched with the open end of the housing 200 through a sealing gasket; since the compressor sealing structure of the above embodiment is arranged between the first bearing 300 and the housing 200 and between the second bearing 600 and the support 500, the assembly operation between the housing 200 and the first bearing 300 and between the support 500 and the second bearing 600 is convenient, the assembly difficulty of the compressor components is reduced while the sealing is realized, when the compressor works, the housing 200 will not collide with the first blocking ring 320 in the radial direction, the support 500 will not collide with the second blocking ring 620, the first blocking ring 320 and the support 500 can be effectively prevented from blocking the first bearing 300 and the second bearing 600, the phenomenon that the pump body 400 is blocked is avoided, the friction power consumption of the first bearing 300, the second bearing 600 and the crankshaft 100 is reduced, and the compressor performance is improved.

[0057] The air conditioning equipment provided by the embodiment of the application comprises the compressor of the above embodiment. According to the air conditioning equipment of the embodiment, the compressor is arranged, so that the reliability of the compressor sealing is ensured, the phenomenon that the pump body 400 is blocked can be avoided when the compressor works, the friction power consumption of the bearing and the crankshaft 100 is low, and the performance of the air conditioning equipment is improved; meanwhile, the arrangement of the first blocking ring 320 reduces the assembly difficulty of the compressor components.

[0058] The vehicle provided by the embodiment of the application comprises the air conditioning equipment of the above embodiment. The vehicle of the embodiment is not limited to a fuel automobile, but can also be a new energy automobile, such as a hybrid electric vehicle, a pure electric vehicle, a fuel cell vehicle, an alcohol ether fuel vehicle, a natural gas vehicle and the like. According to the vehicle of the embodiment, the air conditioning equipment is arranged, the compressor of the air conditioning equipment can avoid the phenomenon that the pump body 400 is blocked while realizing sealing, the friction power consumption of the bearing and the crankshaft 100 is low, the performance of the vehicle is improved, and meanwhile, the arrangement of the first blocking ring 320 reduces the assembly difficulty of the compressor components.

[0059] The above only describes the preferred embodiments of the application and is not used to limit the application, and any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A compressor comprising a crankshaft, a housing, a pump body, a bracket, and a compressor sealing structure, the bracket and the housing defining a high-pressure cavity, the pump body being received in the high-pressure cavity, the crankshaft penetrating through the bracket and being connected with the pump body to drive the pump body to operate in the high-pressure cavity, the pump body comprising a cylinder, a first bearing being installed on the crankshaft, the compressor sealing structure comprising the housing, the first bearing, and a first sealing ring sleeved on a hub of the first bearing, an inner wall of the housing being provided with an annular structure, characterized in that: The hub of the first bearing extends into the annular structure and cooperates to form a first sealing groove, the first sealing ring is located in the first sealing groove, the outer periphery of the hub of the first bearing is sleeved with a first retainer ring, the first retainer ring is located between the annular structure and the first sealing ring, the first retainer ring is in clearance fit with the annular structure, and the axial distance between the first retainer ring and the inner bottom surface of the shell is smaller than the axial distance between the first sealing ring and the inner bottom surface of the shell.

2. The compressor of claim 1, wherein: An annular boss is arranged on the inner periphery of the annular structure, the hub of the first bearing extends into the annular boss and is in clearance fit with the annular boss, and the first bearing, the first retainer ring and the annular structure satisfy the following condition: 0.3mm < S < S1, wherein S is the radial gap distance between the hub of the first bearing and the annular boss, and S1 is the radial gap distance between the outer periphery of the first retainer ring and the annular structure.

3. The compressor of claim 1, wherein: The first retainer ring is in clearance fit with the outer periphery of the hub of the first bearing.

4. The compressor of claim 3, wherein: The clearance between the first retainer ring and the outer periphery of the hub of the first bearing is less than 3mm.

5. The compressor of claim 2, wherein: The annular boss has a first step surface and a second step surface which are vertically connected, the first step surface is perpendicular to the axial direction of the shell, and the second step surface is in clearance fit with the outer periphery of the hub of the first bearing.

6. The compressor of claim 1, wherein: The radial width of the first retainer ring is less than 2mm.

7. The compressor of claim 1, wherein: A shoulder is arranged on the outer periphery of the hub of the first bearing, and the first sealing ring is located between the shoulder and the first retainer ring.

8. The compressor of any one of claims 1-7, wherein: The compressor sealing structure further comprises the support and a second bearing, the support is sleeved on the outer periphery of the hub of the second bearing, and the shell is in sealing fit with the support.

9. The compressor of claim 8, wherein: The compressor sealing structure further comprises a second sealing ring which is sleeved on the outer periphery of the hub of the second bearing, two second retainer rings are spaced apart and sleeved on the outer periphery of the hub of the second bearing, the second sealing ring is located between the two second retainer rings, a second sealing groove is formed between the support and the outer periphery of the hub of the second bearing in cooperation, the outer periphery of the second retainer ring has a radial gap with the second sealing groove, and the two second retainer rings are located in the second sealing groove.

10. An air conditioning apparatus characterized by comprising: The compressor comprises any one of claims 1-9.

11. A vehicle characterized by: The air conditioning equipment comprises claim 10.

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