Compressor and refrigeration equipment

Abstract

The utility model discloses a compressor and refrigeration equipment, the compressor comprises a shell, a pump body assembly and an oil return pipe, the pump body assembly is arranged in the shell, the pump body assembly and the bottom of the shell form a liquid storage cavity, the pump body assembly comprises an air cylinder, the air cylinder is provided with an air inlet, and the air inlet is communicated with the liquid storage cavity; the oil return pipe is arranged in the shell, one end of the oil return pipe is communicated with the air inlet, the other end of the oil return pipe is communicated with the bottom of the liquid storage cavity, and the oil return pipe is fixed to the pump body assembly and / or the liquid storage cavity. According to the technical scheme, lubricating oil deposited at the bottom of the liquid storage cavity can be returned into the pump body assembly, and the reliability of the compressor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a compressor and refrigeration equipment. Background Art

[0002] The compressor is a driven fluid machine that boosts low-pressure gas to high-pressure gas and is the heart of the refrigeration system.

[0003] Lubricating oil is generally injected into the compressor pump body to reduce the friction between the internal parts of the compressor, make the movement between the parts smoother, and reduce the wear of the parts. However, due to the long-term operation of the compressor, a certain amount of lubricating oil inside the compressor will be discharged with the high-pressure refrigerant, and will return to the compressor storage cavity through the pipeline system inside the refrigeration equipment, causing the lubricating oil to be deposited at the bottom of the storage cavity, while the lubricating oil in the compressor pump body is reduced, which causes the compressor to be easily worn in a high temperature and high pressure environment, thereby reducing the reliability of the compressor and causing frequent failures of the compressor. Utility Model Content

[0004] The main purpose of the utility model is to provide a compressor, aiming to return the lubricating oil deposited at the bottom of the liquid storage cavity to the pump body component, so as to improve the reliability of the compressor.

[0005] To achieve the above-mentioned purpose, the compressor proposed by the utility model comprises:

[0006] case;

[0007] A pump assembly is disposed in the housing, wherein the pump assembly and the bottom of the housing form a liquid storage cavity, wherein the pump assembly comprises a cylinder, wherein the cylinder is provided with an air inlet, and the air inlet is connected to the liquid storage cavity; and

[0008] An oil return pipe is arranged in the shell, one end of the oil return pipe is connected to the air inlet, and the other end is connected to the bottom of the liquid storage cavity, and the oil return pipe is fixed to the pump body assembly and / or the liquid storage cavity.

[0009] Optionally, an air intake passage is opened on one side of the pump body assembly facing the liquid storage cavity, one end of the air intake passage is connected to the air inlet, and the other end is connected to the liquid storage cavity, and the oil return pipe is connected to the air intake passage and / or the air inlet.

[0010] Optionally, a limiting installation structure is provided at the bottom of the liquid storage cavity, and one end of the oil return pipe away from the pump body assembly is installed at the bottom of the liquid storage cavity through the limiting installation structure.

[0011] Optionally, the position limiting installation structure includes an elastic member, one end of which is connected to the oil return pipe, and the other end of which is connected to the bottom of the liquid storage chamber, and the elastic member enables the oil return pipe to have a tendency to move toward the pump body assembly.

[0012] Optionally, the position-limiting installation structure comprises a first stopper, the first stopper is sleeved on one end of the oil return pipe away from the pump body assembly, and the elastic member is sleeved on the first stopper; and / or,

[0013] The elastic member is configured as a compression spring.

[0014] Optionally, a mounting hole is provided on a side of the pump body assembly facing the liquid storage chamber, the mounting hole is connected to the air inlet passage and / or the air inlet, the oil return pipe is plugged into the mounting hole, and a second stopper is provided on the oil return pipe, the second stopper abuts against one end of the mounting hole facing the liquid storage chamber to fix the oil return pipe to the mounting hole; or,

[0015] The oil return pipe is plugged into the air intake passage, and a third stopper is provided on the oil return pipe. The third stopper abuts against one end of the air intake passage toward the liquid storage chamber to fix the oil return pipe to the air intake passage.

[0016] Optionally, a mounting hole is opened on the side of the pump body assembly facing the liquid storage chamber, and the mounting hole is connected to the air intake passage and / or the air intake port. One end of the oil return pipe is installed in the mounting hole to connect to the air intake passage and / or the air intake port.

[0017] Optionally, the oil return pipe is threadedly connected to the mounting hole; or,

[0018] The oil return pipe is interference fit with the mounting hole; or,

[0019] The oil return pipe is bonded to the mounting hole; or,

[0020] The oil return pipe is welded to the mounting hole.

[0021] Optionally, a limiting groove is provided on the inner wall of the mounting hole, and the oil return pipe is provided with a laterally protruding limiting protrusion. When the oil return pipe is inserted into the mounting hole, the limiting protrusion is inserted into the limiting groove to prevent the oil return pipe from detaching from the mounting hole.

[0022] Optionally, the pump body assembly further comprises a lower bearing and an oil cover, wherein the lower bearing is arranged on a side of the cylinder facing the liquid storage chamber, the oil cover is fixed to a side of the lower bearing away from the cylinder, the air intake passage passes through the lower bearing and the oil cover, and the mounting hole is arranged on the lower bearing;

[0023] A limiting notch is provided on the periphery of one end of the mounting hole toward the oil cover, the oil cover covers one side of the limiting notch to form the limiting groove, the oil return pipe passes through the lower bearing and is inserted into the mounting hole, and the limiting protrusion is inserted into the limiting groove.

[0024] Optionally, the pump body assembly is further provided with a communication channel, the mounting hole is connected to the air inlet channel via the communication channel, and the communication channel is arranged close to the air inlet.

[0025] Optionally, the oil return pipe is configured as a hard pipe; or, the oil return pipe is configured as a flexible pipe.

[0026] The utility model also provides a refrigeration device, comprising the compressor as described above.

[0027] The technical solution of the utility model is to set a pump body assembly and an oil return pipe in the shell. The pump body assembly is arranged in the shell. The pump body assembly and the bottom of the shell form a liquid storage cavity. The pump body assembly includes a cylinder, and the cylinder is provided with an air inlet, which is connected to the liquid storage cavity. The oil return pipe is arranged in the shell, and one end of the oil return pipe is connected to the air inlet, and the other end is connected to the bottom of the liquid storage cavity. The oil return pipe is generally configured as a capillary tube, and due to the effect of the suction pressure difference when the compressor is running, the lubricating oil at the bottom of the liquid storage cavity can be pumped back into the cylinder through the oil return pipe, thereby realizing the continuous recycling of the lubricating oil deposited at the bottom of the liquid storage cavity, thereby improving the reliability of the compressor and reducing the possibility of compressor failure. The oil return pipe is fixed to the pump body assembly and / or the liquid storage cavity, thereby ensuring the reliable fixation of the oil return pipe, reducing the possibility of the oil return pipe accidentally detaching from the pump body assembly, and further improving the reliability of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 This is a schematic structural diagram of an embodiment of a compressor of the utility model;

[0030] Figure 2 for Figure 1 The schematic diagram of the structure of the pump body assembly;

[0031] Figure 3 for Figure 1 A schematic diagram of the structure of the middle and lower bearing at an angle;

[0032] Figure 4 for Figure 3 Schematic diagram of the cross section of the middle and lower bearing cap along AA;

[0033] Figure 5 for Figure 1 Another structural diagram of the middle and lower bearings from another angle;

[0034] Figure 6 This is a schematic diagram of the installation structure of the lower bearing in the housing in another embodiment of the compressor of the utility model;

[0035] Figure 7 for Figure 6 A schematic diagram of the installation structure of the pump assembly in the housing;

[0036] Figure 8 It is a partial exploded view of a shell in another embodiment of the compressor of the utility model;

[0037] Fig. 9 for Figure 8 A schematic diagram of the installation structure of the pump assembly in the housing;

[0038] Fig.10 This is a schematic structural diagram of another embodiment of the compressor of the utility model.

[0039] Description of Figure Numbers:

[0040] Label name Label name 100 compressor 124a Limit slot 110 case 125 Connecting Channels 111 Liquid storage chamber 126 Lower bearing 112 Top cover 127 Oil cap 113 main housing 128 Oil storage tank 114 Bottom cover 130 Oil return pipe 115 High pressure chamber 131 Limiting convex part 116 Air Inlet 132 Second gear piece 120 Pump body components 140 Crankshaft 121 cylinder 150 Limit installation structure 122 Air Inlet 151 First gear 123 Intake duct 152 Elastic parts 124 Mounting holes

[0041] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions, taking "A and / or B as an example", including solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0045] The utility model proposes a compressor 100, which is used in refrigeration equipment such as air conditioners and refrigerators. It is an important component of equipment such as air conditioners and refrigerators, and is used to pressurize the refrigerant in the refrigeration pipeline to facilitate the heat dissipation of the refrigerant. Specifically, the low-pressure refrigerant passing through the evaporator in the refrigeration equipment enters the compressor 100, and the compressor 100 works to pressurize the refrigerant to form a high-pressure refrigerant, which then enters the condenser to dissipate heat, thereby completing the heat exchange.

[0046] In the embodiment of the present utility model, Figures 1 to 10 As shown, the compressor 100 includes a shell 110, a pump body assembly 120 and an oil return pipe 130. The pump body assembly 120 is arranged in the shell 110. The pump body assembly 120 and the bottom of the shell 110 form a liquid storage chamber 111. The pump body assembly 120 includes a cylinder 121. The cylinder 121 is provided with an air inlet 122, and the air inlet 122 is connected to the liquid storage chamber 111; the oil return pipe 130 is arranged in the shell 110, one end of the oil return pipe 130 is connected to the air inlet 122, and the other end is connected to the bottom of the liquid storage chamber 111, and the oil return pipe 130 is fixed to the pump body assembly 120 and / or the liquid storage chamber 111.

[0047] Specifically, the compressor 100 includes a housing 110, a pump assembly 120 and an oil return pipe 130. The interior of the housing 110 is divided into a high-pressure chamber 115 and a liquid storage chamber 111, and the liquid storage chamber 111 is a low-pressure chamber. The pump assembly 120 is installed in the housing 110 and is located in the high-pressure chamber 115. The liquid storage chamber 111 is formed between the pump assembly 120 and the bottom of the housing 110. To facilitate the installation of the pump assembly 120, the housing 110 generally includes a main housing 113 arranged in a cylindrical shape, and a top cover 112 and a bottom cover 114 covering the opposite ends of the main housing 113, so as to facilitate the installation of the components in the main housing 113. The top cover 112 and the bottom cover 114 can be welded and fixed to the housing 110, so as to complete the integration of the housing 110.

[0048] The side wall of the liquid storage chamber 111 is provided with an air inlet 116, which is used for the external air inlet 122 to penetrate, so as to introduce the low-pressure refrigerant in the circuit into the liquid storage chamber 111, and the cylinder 121 is provided with an air inlet 122 connected to the liquid storage chamber 111, so that the low-pressure refrigerant enters the cylinder 121 through the air inlet 122, and forms a high-pressure refrigerant after being compressed by the cylinder 121, and is discharged from the compressor 100. In order to reduce friction, lubricating oil is generally injected into the pump body assembly 120 for lubrication, and the lubricating oil is transported to other parts of the compressor 100 through the crankshaft 140 of the compressor 100 and the oil passage in the oiling blade housing 110, so as to reduce the friction between the internal parts of the compressor 100, make the movement between the various parts smoother, and reduce the wear of the parts. However, due to the long-term operation of the compressor 100, a certain amount of lubricating oil in the pump body assembly 120 will be discharged with the high-pressure refrigerant. The lubricating oil is returned to the liquid storage chamber 111 with the refrigerant through the pipeline loop. At this time, the lubricating oil is deposited at the bottom of the liquid storage chamber 111. As the compressor 100 operates for a long time, the lubricating oil inside the pump assembly 120 will gradually decrease, causing the internal parts of the compressor 100 to be easily worn in a high temperature and high pressure environment, thereby reducing the reliability of the compressor 100 and causing frequent failures of the compressor 100.

[0049] In order to return the lubricating oil deposited at the bottom of the liquid storage chamber 111 to the pump body assembly 120, an oil return pipe 130 is provided in the housing 110. One end of the oil return pipe 130 is connected to the air inlet 122, and the other end is connected to the bottom of the liquid storage chamber 111. The oil return pipe 130 is generally configured as a capillary tube, and due to the effect of the suction pressure difference when the compressor 100 is running, the lubricating oil at the bottom of the liquid storage chamber 111 can be pumped back to the cylinder 121 through the oil return pipe 130, thereby realizing the continuous recycling of the lubricating oil deposited at the bottom of the liquid storage chamber 111, thereby improving the reliability of the compressor 100 and reducing the possibility of failure of the compressor 100. The oil return pipe 130 is at least fixed to the pump body assembly 120, thereby ensuring the reliable fixation of the oil return pipe 130, reducing the possibility of the oil return pipe 130 accidentally detaching from the pump body assembly 120, and further improving the reliability of the compressor 100.

[0050] In order to ensure the oil return effect of the oil return pipe 130, the lower end of the oil return pipe 130 extends to the bottom cover 114 and conflicts with the bottom cover 114, that is, the lower end of the oil return pipe 130 can be directly placed on the bottom cover 114, so that the oil return pipe 130 can absorb the lubricating oil deposited on the bottom cover 114; the lower end of the oil return pipe 130 can also have a gap with the bottom cover 114, but in order to ensure the oil return pipe 130 to absorb the lubricating oil deposited on the bottom cover 114, the distance between the lower end of the oil return pipe 130 and the bottom cover 114 should not be too large, for example, not more than 10mm. The oil return pipe 130 is fixed to the pump body assembly 120 and / or the liquid storage chamber 111, that is, the oil return pipe 130 can be only fixed to the pump body assembly 120, or only fixed in the liquid storage chamber 111, and is generally fixed to the bottom of the liquid storage chamber 111, or respectively fixed to the pump body assembly 120 and the liquid storage chamber 111.

[0051] In one embodiment, the pump body assembly 120 is provided with an air inlet channel 123 on one side facing the liquid storage chamber 111, one end of the air inlet channel 123 is connected to the air inlet 122, and the other end is connected to the liquid storage chamber 111, and the oil return pipe 130 is connected to the air inlet channel 123 and / or the air inlet 122. Specifically, the air inlet channel 123 is connected to the air inlet 122 and the liquid storage chamber 111, so that the low-pressure refrigerant enters the air inlet 122 from the air inlet channel 123, and the oil return pipe 130 is connected to the air inlet channel 123 and / or the air inlet 122. When the compressor 100 is running, the pressure near the air inlet 122 is relatively low, while the pressure in the liquid storage chamber 111 is higher than the air inlet 122. At the same time, the refrigerant near the air inlet 122 flows, and the lubricating oil at the bottom of the liquid storage chamber 111 is returned to the inside of the cylinder 121 through the pressure difference and pulsation between the liquid storage chamber 111 and the air inlet 122.

[0052] The oil return pipe 130 may be fixed in the air intake passage 123, or passed through the air intake passage 123 and fixed in the air intake port 122, thereby connecting the air intake passage 123 and / or the air intake port 122; or a preset passage may be opened in the pump body assembly 120, the preset passage is connected to the air intake passage 123 and / or the air intake port 122, and the oil return pipe 130 is fixed to the preset passage and connected to the preset passage. The air intake passage 123 may extend along the axial direction of the housing 110, or may be inclined relative to the axial direction of the housing 110, or may be arranged in a winding manner in the pump body assembly 120. The port of the air intake passage 123 may be circular, polygonal, or arc-shaped.

[0053] Reference Figure 8 and Fig. 9In one embodiment, a limiting installation structure 150 is provided at the bottom of the liquid storage cavity 111, and one end of the oil return pipe 130 away from the pump body assembly 120 is installed at the bottom of the liquid storage cavity 111 through the limiting installation structure 150. Specifically, the oil return pipe 130 is configured as a hard pipe, one end of the oil return pipe 130 away from the pump body assembly 120 is fixed to the limiting installation structure 150, and the other end is inserted into the air inlet channel 123 or a preset channel, so as to communicate with the air inlet 122. The oil return pipe 130 is installed in the installation hole 124, which can ensure the fixing stability of the oil return pipe 130 and facilitate the installation of the oil return pipe 130.

[0054] Furthermore, the position-limiting installation structure 150 includes an elastic member 152, one end of which is connected to the oil return pipe 130, and the other end is connected to the bottom of the liquid storage chamber 111. The elastic member 152 makes the oil return pipe 130 have a tendency to move toward the pump body assembly 120. Specifically, the oil return pipe 130 is in conflict with the bottom cover 114 through the elastic member 152. The elastic member 152 can push the oil return pipe 130 to have a tendency to move toward the pump body assembly 120. The end of the oil return pipe 130 away from the elastic member 152 is correspondingly fixed to the pump body assembly, thereby ensuring the fixation of the oil return pipe 130. That is, the position-limiting installation structure 150 has a certain elasticity, thereby pressing the oil return pipe 130 against the pump body assembly 120. At this time, there is often a certain fixed or position-limiting connection between the oil return pipe 130 and the pump body assembly 120, thereby reducing the possibility that the oil return pipe 130 passes through the air intake channel 123 or the preset channel too much, resulting in the possibility of blockage at the end of the oil return pipe 130.

[0055] In other embodiments, the limit mounting structure 150 may also not be elastic. In this case, the limit mounting structure 150 is directly limit-fixed to the return oil pipe 130. For example, the limit mounting structure 150 is configured as a limit clamping structure disposed at the bottom of the liquid storage chamber 111. The limit clamping structure clamps and fixes the return oil pipe 130 to the bottom of the liquid storage chamber 111, thereby ensuring the installation of the return oil pipe 130. At this time, the return oil pipe 130 can mainly be connected to the air intake channel 123 or the preset channel, such as the return oil pipe 130 is inserted into the air intake channel 123 or the preset channel.

[0056] Among them, when the oil return pipe 130 conflicts with the bottom cover 114, the oil return pipe 130 includes a first pipe section extending along the height direction of the liquid storage chamber 111, and a second pipe section extending at the bottom of the liquid storage chamber 111, and the first pipe section and the second pipe section are set at an angle, and the limiting mounting structure 150 abuts against the connection between the bottom cover 114 and the first pipe section and the second pipe section; when a gap is set between the oil return pipe 130 and the bottom cover 114, the limiting mounting structure 150 abuts between the other end of the oil return pipe 130 and the bottom cover 114.

[0057] When setting the gap between the oil return pipe 130 and the bottom cover 114, refer to Figure 8 and Fig. 9 In one embodiment, the position-limiting installation structure 150 includes a first stopper 151, which is sleeved on one end of the oil return pipe 130 away from the pump body assembly, and the elastic member 152 is sleeved on the first stopper 151. Specifically, the first stopper 151 is sleeved on the other end of the oil return pipe 130 for mounting the elastic member 152, and the first stopper 151 has a stopper edge, and when the elastic member 152 is sleeved on the first stopper 151, it abuts against the stopper edge, thereby facilitating the installation of the elastic member 152.

[0058] In one embodiment, the elastic member 152 is configured as a compression spring. One end of the compression spring is sleeved on the first shift member 151, and the other end is abutted against the bottom cover 114. Due to the gap between the oil return pipe 130 and the bottom of the liquid storage chamber 111, the oil return pipe 130 is connected to the liquid storage chamber 111 through the gap of the compression spring. In other embodiments, the elastic member 152 can also be configured as an elastic block, and a channel for connecting the oil return pipe 130 and the liquid storage chamber 111 is provided on the elastic block.

[0059] Refer again Figures 1 to 10 In one embodiment, a mounting hole 124 is provided on one side of the pump body assembly 120 facing the liquid storage chamber 111, and the mounting hole 124 is connected to the air inlet passage 123 and / or the air inlet 122. One end of the oil return pipe 130 is installed in the mounting hole 124 to connect to the air inlet passage 123 and / or the air inlet 122. Specifically, in this embodiment, the mounting hole 124 (preset passage) is provided in the lower bearing 126, and the mounting hole 124 is connected to the air inlet passage 123 and / or the air inlet 122. The oil return pipe 130 is fixed to the mounting hole 124 and connected to the mounting hole 124. The mounting hole 124 can be directly connected to the air inlet passage 123 or directly connected to the air inlet 122, such as extending to the intersection of the air inlet 122 and the air inlet passage 123; or the mounting hole 124 passes through the lower bearing 126 and the cylinder 121 in sequence to directly connect to the air inlet 122.

[0060] Furthermore, the pump body assembly 120 is also provided with a connecting passage 125, through which the mounting hole 124 is connected to the air inlet passage 123, and the connecting passage 125 is arranged close to the air inlet port 122. Specifically, on the side of the lower bearing 126 facing the liquid storage chamber 111, the mounting hole 124 is often spaced apart from the air inlet passage 123. If the mounting hole 124 is directly connected to the air inlet passage 123, that is, the mounting hole 124 is configured as an inclined hole, it is not only inconvenient to process the mounting hole 124, but also not conducive to the assembly of the oil return pipe 130, so the mounting hole 124 is often configured as a vertical hole. At this time, the mounting hole 124 is connected to the intake channel 123 through the connecting channel 125. The connecting channel 125 is installed between the intake channel 123 and the mounting hole 124. For the convenience of processing, the connecting channel 125 is often configured as a notch provided on the side of the lower bearing 126 facing the cylinder 121, thereby facilitating the processing of the connecting channel 125. At this time, the return oil pipe 130 is connected to the junction of the air inlet port 122 and the air inlet channel 123. The connecting channel 125 is arranged close to the air inlet port 122. Compared with the return oil pipe 130 directly connected to the air inlet channel 123, this solution is more convenient for returning the lubricating oil to the cylinder 121, and is also convenient for the processing of the connecting channel 125; compared with the return oil pipe 130 directly connected to the air inlet channel 123, this solution is more convenient for the processing of the intake channel 123.

[0061] At this time, in order to ensure the installation of the oil return pipe 130 and the pump body assembly 120, in one embodiment, the oil return pipe 130 is inserted into the mounting hole 124, and a second stopper 132 is provided on the oil return pipe 130, and the second stopper 132 abuts against one end of the mounting hole 124 facing the liquid storage chamber 111 to fix the oil return pipe 130 in the mounting hole 124. The second stopper 132 is provided at one end of the mounting hole 124 facing the liquid storage chamber 111, that is, provided at one end of the pump body assembly 120 facing the liquid storage chamber 111, so as to facilitate the installation of the second stopper 132, and the second stopper 132 can prevent the oil return pipe 130 from moving toward the mounting hole 124, thereby reducing the possibility that the oil return pipe 130 passes through the mounting hole 124 too much, causing the end of the oil return pipe 130 to be blocked. In other embodiments, the second stopper 132 can also be configured as a limiting convex portion, and a limiting groove is provided corresponding to the mounting hole 124. The oil return pipe 130 may also be directly fixed in the mounting hole 124 by threaded connection or interference fit.

[0062] If the oil return pipe 130 is directly plugged into the air intake passage, in another embodiment, the oil return pipe 130 is plugged into the air intake passage 123, and a third stopper is provided on the oil return pipe 130, and the third stopper abuts against one end of the air intake passage 123 facing the liquid storage chamber 111 to fix the oil return pipe 130 in the air intake passage 123. The third stopper is provided at one end of the air intake passage 123 facing the liquid storage chamber 111, that is, provided at one end of the pump body assembly 120 facing the liquid storage chamber 111, so as to facilitate the installation of the third stopper, and the third stopper can prevent the oil return pipe 130 from moving toward the air intake passage 123, so that the oil return pipe 130 is not too far through the air intake passage 123, so that the end of the oil return pipe 130 extends into the cylinder 121. In other embodiments, the third stopper can also be configured as a limiting convex portion, and a limiting groove is correspondingly provided in the air intake passage 123. At this time, in order to facilitate the air intake of the air intake channel 123, the third shifting member is provided with a plurality of through holes.

[0063] In one embodiment, referring to Figures 1 to 9 , the oil return pipe 130 is configured as a hard pipe, so as to facilitate the installation of the oil return pipe 130. The oil return pipe 130 can be a hard metal pipe, so as to improve the service life of the oil return pipe 130, or it can be a hard plastic pipe. At this time, the length of the oil return pipe 130 is less than or equal to the sum of the depths of the liquid storage chamber and the mounting hole 124, that is, the other end of the oil return pipe 130 is in contact with the bottom cover 114, or a gap is set with the bottom cover 114; the oil return pipe 130 can also include a first pipe section extending along the height direction of the liquid storage chamber 111 and a second pipe section extending at the bottom of the liquid storage chamber 111, and the first pipe section and the second pipe section are set at an angle.

[0064] When the oil return pipe 130 is configured as a hard pipe, in one embodiment, the oil return pipe 130 is threadedly connected to the mounting hole 124 , thereby facilitating the installation of the oil return pipe 130 and ensuring the installation stability of the oil return pipe 130 .

[0065] In another embodiment, the oil return pipe 130 is interference fit with the mounting hole 124 , so as to facilitate the installation of the oil return pipe 130 and ensure the installation stability of the oil return pipe 130 .

[0066] When the oil return pipe 130 is configured as a metal pipe, in one embodiment, the oil return pipe 130 is welded to the mounting hole 124 .

[0067] When the oil return pipe 130 is configured as a plastic pipe, in one embodiment, the oil return pipe 130 is bonded to the mounting hole 124 .

[0068] Reference Fig.10In another embodiment, the oil return pipe 130 is configured as a flexible pipe. The oil return pipe 130 may be a flexible plastic pipe. In this case, the length of the oil return pipe 130 is greater than or equal to the length of the oil return pipe 130, that is, the other end of the oil return pipe 130 abuts against the bottom cover 114, or the excess part of the oil return pipe 130 is placed on the bottom cover 114; or the length of the oil return pipe 130 is less than or equal to the sum of the depths of the liquid storage cavity and the mounting hole 124, that is, the other end of the oil return pipe 130 abuts against the bottom cover 114, or a gap is set between the bottom cover 114.

[0069] Reference Figure 6 and Figure 7 In one embodiment, the inner wall of the mounting hole 124 is provided with a limiting groove 124a, and the oil return pipe 130 is provided with a laterally protruding limiting convex portion 131. When the oil return pipe 130 is inserted into the mounting hole 124, the limiting convex portion 131 is inserted into the limiting groove 124a to prevent the oil return pipe 130 from being separated from the mounting hole 124. Specifically, the oil return pipe 130 is limitedly clamped in the mounting hole 124, and the limiting convex portion 131 protrudes laterally from the oil return pipe 130. The corresponding mounting hole 124 is provided with a limiting groove 124a, and the limiting groove 124a is connected to the mounting hole 124, so that when the oil return pipe 130 is inserted into the mounting hole 124, the limiting convex portion 131 is inserted into the limiting groove 124a, thereby ensuring the fixation of the oil return pipe 130 and facilitating the installation of the oil return pipe 130. In this embodiment, the limiting protrusion 131 is arranged around the periphery of the oil return pipe 130, and the limiting groove 124a is correspondingly arranged around the periphery of the mounting hole 124, thereby ensuring the fixation of the oil return pipe 130 and facilitating the processing of the oil return pipe 130 and the mounting hole 124.

[0070] In one embodiment, the pump body assembly 120 also includes a lower bearing 126 and an oil cover 127. The lower bearing 126 is arranged on the side of the cylinder 121 facing the liquid storage chamber 111, and the oil cover 127 is fixed to the side of the lower bearing 126 away from the cylinder 121. The air intake channel 123 runs through the lower bearing 126 and the oil cover 127. The mounting hole 124 is arranged on the lower bearing 126, and the oil return pipe 130 passes through the oil cover 127 and is inserted into the mounting hole 124. Specifically, the lower bearing 126 is disposed on a side of the cylinder 121 close to the liquid storage chamber 111, the outer wall of the lower bearing 126 is fixedly connected to the inner wall of the housing 110, the side of the lower bearing 126 away from the liquid storage chamber 111 is connected to the cylinder 121 to support the cylinder 121, and the lower bearing 126 abuts against the inner wall of the housing 110, and the outer peripheral edge of the lower bearing 126 is disposed in a sealing structure, thereby separating the high-pressure chamber 115 and the liquid storage chamber 111 in the housing 110, that is, the lower bearing 126 not only has the function of supporting the cylinder 121, but also can play the role of a partition, thereby helping to miniaturize the compressor 100. Of course, in other embodiments, a partition can also be directly disposed in the housing 110, thereby separating the high-pressure chamber 115 and the liquid storage chamber 111 in the housing 110. The air intake passage 123 is opened in the lower bearing 126, that is, the air intake passage 123 is configured as a hole section penetrating the upper and lower sides of the lower bearing 126, so as to facilitate the processing of the air intake passage 123. The corresponding oil return pipe 130 is fixed to the lower bearing 126, and the oil return pipe 130 can be directly fixed in the air intake passage 123, or a preset passage can be opened in the lower bearing 126, and the preset passage is connected to the air intake passage 123 and / or the air inlet 122, and the oil return pipe 130 is fixed to the preset passage and connected to the preset passage.

[0071] The oil cover 127 is arranged on the side of the lower bearing 126 away from the cylinder 121, and is connected to the lower bearing 126 to form an oil reservoir 128. The lubricating oil in the pump body assembly 120 drips and is stored in the oil reservoir 128. At the same time, the lubricating oil in the oil reservoir 128 can be supplied to other parts to reduce the friction and wear of each part. The pump body assembly 120 also includes a crankshaft 140, which is a mechanical element used to convert linear motion into rotational motion, usually consisting of a long metal shaft and a plurality of eccentric wheels. The pump body assembly 120 also includes an upper bearing, and the cylinder 121 is arranged between the upper bearing and the lower bearing 126, and is connected to the upper bearing and the lower bearing 126. The crankshaft 140 passes through and connects the cylinder 121, the upper bearing and the lower bearing 126 in sequence. The crankshaft 140 is used to drive the rotary piston in the cylinder 121, and drives the rotary piston to rotate to compress the refrigerant. The upper bearing and the lower bearing 126 support the crankshaft 140. The end of the crankshaft 140 close to the liquid storage chamber 111 is connected to the oiling blade housing 110. The oiling blade housing 110 is a mechanical device for conveying lubricating oil or other fluids. The oiling blade housing 110 is arranged in the oil storage tank 128, and is used to spray the lubricating oil in the oil storage tank 128 to various parts of the compressor 100, so as to reduce the friction and wear of various parts, and reduce noise and energy loss. Therefore, a hole for the return oil pipe 130 to pass through is correspondingly opened at the edge of the oil storage tank, and one end of the return oil pipe 130 passes through the oil cover 127 and is fixed to the lower bearing 126; or the mounting hole 124 directly passes through the lower bearing 126 and the oil cover 127. Among them, the oil cover 127 also has a certain silencing effect, thereby isolating the propagation of noise and blocking the noise during the operation of the pump body assembly 121.

[0072] Furthermore, a limiting notch is provided at the periphery of one end of the mounting hole 124 facing the oil cover 127, and the oil cover 127 covers one side of the limiting notch to form a limiting groove 124a. Specifically, a limiting notch is provided at one end of the lower bearing 126 that abuts against the oil cover 127, and when the lower bearing 126 abuts against the oil cover 127, the oil cover 127 covers an opening of the limiting notch, thereby forming the limiting groove 124a. During installation, the oil return pipe 130 can be first inserted into the mounting hole 124, and the limiting protrusion 131 can be placed in the limiting notch, and then the oil cover 127 can be installed on the lower bearing 126, and the limiting protrusion 131 can be blocked from leaving the limiting notch, thereby facilitating the processing of the limiting groove 124a and the installation of the oil return pipe 130. Of course, in other embodiments, the mounting hole 124 includes a first hole section and a second hole section that are interconnected, the first hole section faces the cylinder 121, the second hole section faces the liquid storage chamber 111, and the inner diameter of the first hole section is larger than the inner diameter of the second hole section, and the oil return pipe 130 is provided with a laterally protruding limiting protrusion 131, which is inserted into the first hole section.

[0073] The utility model also proposes a refrigeration device, which includes a compressor 100. The specific structure of the compressor 100 refers to the above embodiment. Since the refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0074] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A compressor, characterized in that: include: case; A pump assembly is disposed in the housing, wherein the pump assembly and the bottom of the housing form a liquid storage cavity, wherein the pump assembly comprises a cylinder, wherein the cylinder is provided with an air inlet, and the air inlet is connected to the liquid storage cavity; and An oil return pipe is arranged in the housing, one end of the oil return pipe is connected to the air inlet, and the other end is connected to the bottom of the liquid storage cavity, and the oil return pipe is fixed to the pump body assembly and / or the liquid storage cavity; A limiting installation structure is provided at the bottom of the liquid storage cavity, and one end of the oil return pipe away from the pump body assembly is installed at the bottom of the liquid storage cavity through the limiting installation structure; The position limiting installation structure comprises an elastic member, one end of which is connected to the oil return pipe, and the other end of which is connected to the bottom of the liquid storage cavity. The elastic member enables the oil return pipe to have a tendency to move toward the pump body assembly.

2. The compressor according to claim 1, characterized in that The pump body assembly is provided with an air intake passage on one side facing the liquid storage cavity, one end of the air intake passage is connected to the air intake port, and the other end is connected to the liquid storage cavity, and the oil return pipe is connected to the air intake passage and / or the air intake port.

3. The compressor according to claim 1, characterized in that The position-limiting installation structure comprises a first stopper, the first stopper is sleeved on one end of the oil return pipe away from the pump assembly, and the elastic member is sleeved on the first stopper; and / or, The elastic member is configured as a compression spring.

4. The compressor according to claim 2, characterized in that A mounting hole is provided on a side of the pump body assembly facing the liquid storage chamber, the mounting hole is connected to the air inlet passage and / or the air inlet, the oil return pipe is plugged into the mounting hole, and a second stopper is provided on the oil return pipe, the second stopper abuts against one end of the mounting hole facing the liquid storage chamber to fix the oil return pipe to the mounting hole; or, The oil return pipe is plugged into the air intake passage, and a third stopper is provided on the oil return pipe. The third stopper abuts against one end of the air intake passage toward the liquid storage chamber to fix the oil return pipe to the air intake passage.

5. The compressor according to claim 2, characterized in that The pump body assembly is provided with a mounting hole on one side facing the liquid storage chamber, the mounting hole is connected to the air intake passage and / or the air intake port, and one end of the oil return pipe is installed in the mounting hole to connect to the air intake passage and / or the air intake port.

6. The compressor according to claim 5, characterized in that The oil return pipe is threadedly connected to the mounting hole; or, The oil return pipe is interference fit with the mounting hole; or, The oil return pipe is bonded to the mounting hole; or, The oil return pipe is welded to the mounting hole.

7. The compressor according to claim 5, characterized in that The inner wall of the mounting hole is provided with a limiting groove, and the oil return pipe is provided with a laterally protruding limiting convex portion. When the oil return pipe is inserted into the mounting hole, the limiting convex portion is inserted into the limiting groove to prevent the oil return pipe from being separated from the mounting hole.

8. The compressor according to claim 7, characterized in that The pump body assembly further includes a lower bearing and an oil cover, wherein the lower bearing is arranged on a side of the cylinder facing the liquid storage chamber, the oil cover is fixed to a side of the lower bearing away from the cylinder, the air intake passage passes through the lower bearing and the oil cover, and the mounting hole is arranged on the lower bearing; A limiting notch is provided on the periphery of one end of the mounting hole toward the oil cover, the oil cover covers one side of the limiting notch to form the limiting groove, the oil return pipe passes through the lower bearing and is inserted into the mounting hole, and the limiting protrusion is inserted into the limiting groove.

9. The compressor according to claim 5, characterized in that The pump body assembly is further provided with a communication channel, the mounting hole is connected to the air inlet channel through the communication channel, and the communication channel is arranged close to the air inlet.

10. The compressor according to claim 1, characterized in that The oil return pipe is configured as a hard pipe; or, the oil return pipe is configured as a flexible pipe.

11. A refrigeration device, characterized in that: Comprising a compressor as claimed in any one of claims 1 to 10.

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