Compressor and refrigeration equipment

Abstract

The utility model discloses a compressor and refrigeration equipment, the compressor comprises a shell, the shell is integrally arranged, and a lower bearing is arranged in the shell; the oil cover is arranged on the lower end face of the lower bearing in a sealed mode, and the oil cover is used for containing lubricating oil in the compressor; the heat insulation cover is arranged below the oil cover and covers the oil cover, and a heat insulation gap is formed between the heat insulation cover and the oil cover. According to the technical scheme, the heat shield is arranged between the low-temperature refrigerant and the oil cover, so that the heat transferred to the refrigerant by cooling engine oil through the oil cover is effectively reduced, the possibility of invalid overheating of the low-temperature refrigerant is reduced, and the energy efficiency of the compressor is guaranteed.

Description

Technical Field

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

[0002] With the improvement of compressor integration and the overall trend of miniaturization, compressors with liquid reservoirs integrated inside the compressor have become available. In integrated vertical compressors, the high-temperature zone and the low-temperature zone in the compressor are generally distinguished by the lower bearing of the cylinder and the oil cap arranged on the lower bearing to receive the return lubricating oil. After containing the lubricating oil, the oil cap may transfer the heat of the lubricating oil to the refrigerant in the low-temperature zone, thereby causing ineffective overheating and affecting the energy efficiency of the compressor. Utility Model Content

[0003] The main purpose of the utility model is to provide a compressor, aiming to reduce the heat transfer from the oil cover to the low temperature area.

[0004] To achieve the above-mentioned purpose, the compressor proposed by the utility model comprises

[0005] A housing, the housing being integrally provided, and a lower bearing being provided in the housing;

[0006] An oil cover, the oil cover is sealingly arranged on the lower end surface of the lower bearing, and the oil cover is used to contain the lubricating oil in the compressor;

[0007] A heat insulation cover is arranged below the oil cover and covers the oil cover, and a heat insulation gap is arranged between the heat insulation cover and the oil cover.

[0008] Optionally / in one embodiment, the oil cover has a first flange, and the oil cover is sealed to the lower bearing via the first flange.

[0009] Optionally / in one embodiment, the heat shield has a second flange, and the heat shield is connected to the lower bearing via the second flange.

[0010] Optionally / in one embodiment, the first flange is arranged between the second flange and the lower bearing.

[0011] Optionally / in one embodiment, a plurality of fixing holes are correspondingly opened on the first flange and the second flange, and fasteners are arranged in the fixing holes. Ends of the fasteners pass through the second flange and the first flange in sequence and are connected to the lower bearing.

[0012] Optionally / in one embodiment, a thermal insulation gasket is provided between the first flange and the second flange.

[0013] Optionally / in one embodiment, the thermal insulation gasket is an integrated gasket, and the integrated gasket is provided with a plurality of through holes for the fasteners to pass through.

[0014] Optionally / in one embodiment, the first flange, the second flange and the outer periphery of the integrated gasket are all recessed to form pipe openings, and the pipe openings are used to make way for the return air and oil pipes.

[0015] Optionally / in one embodiment, the thermal insulation gasket is a plurality of split gaskets, and the plurality of split gaskets correspond one-to-one to the plurality of fixing holes.

[0016] Optionally / in one embodiment, the outer peripheral walls of the oil cover and the heat insulation cover are both recessed to form an adapting groove to make way for the return air and oil pipes.

[0017] Optionally / in one embodiment, a plurality of combination parts are formed on the outer peripheral wall of the heat insulation cover inwardly recessed, and the combination parts are used to change the thickness of the heat insulation gap.

[0018] Optionally / in one embodiment, the outer periphery of the second flange is bent downward to form a connecting ring, and the connecting ring is fixedly connected to the shell.

[0019] Optionally / in one embodiment, the heat shield is embedded in the oil cover.

[0020] The utility model also provides a refrigeration device, comprising the above compressor.

[0021] The technical solution of the utility model effectively reduces the heat transferred to the refrigerant by the cooling oil through the oil cap by arranging a heat insulation cover between the low-temperature refrigerant and the oil cover, thereby reducing the possibility of ineffective overheating of the low-temperature refrigerant and ensuring the energy efficiency of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 It is a schematic diagram of the overall structure of the compressor of the utility model;

[0024] Figure 2 It is a schematic diagram of the cooperation between the heat shield and the oil cover;

[0025] Figure 3 It is a cross-sectional schematic diagram of the heat shield and the oil cover after being matched;

[0026] Figure 4 This is a schematic diagram of the structure of the oil cap of the utility model;

[0027] Figure 5 It is a schematic diagram of the structure of the heat insulation cover of the utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the thermal insulation gasket of the utility model;

[0029] Figure 7 It is a structural schematic diagram of another embodiment of the thermal insulation gasket of the utility model;

[0030] Figure 8 This is an exploded view of the structure of the oil cap, thermal insulation gasket and thermal insulation cover of the utility model;

[0031] Fig. 9 It is a structural explosion diagram of another embodiment of the oil cover, thermal insulation gasket and thermal insulation cover of the utility model.

[0032] Description of Figure Numbers:

[0033] Label name Label name 1 case 41 Second Flanging 2 Lower bearing 42 Thermal insulation gasket 3 Oil cap 421 perforation 31 First Flanging 422 Insulation tank 32 Fixing holes 43 Nozzle 33 fastener 44 Adapter slot 4 Heat shield 45 Combination Department 46 Connection ring

[0034] 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

[0035] 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.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] 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, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. 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.

[0038] The compressor is an important component of equipment such as air conditioners and refrigerators. It 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 will enter the compressor, which will pressurize the refrigerant to form high-pressure refrigerant. The high-pressure refrigerant then enters the condenser to dissipate heat, thus completing the heat exchange.

[0039] At present, the compressor generally includes a main body and a liquid reservoir, and the liquid reservoir is generally arranged on the side of the main body or at the bottom of the main body. The liquid reservoir will store the low-pressure refrigerant from the evaporator. The liquid reservoir will be provided with an air intake pipe connected to the main body, and the low-pressure refrigerant enters the main body through the air intake pipe, and then the compression mechanism in the main body will pressurize the low-pressure refrigerant, so that the low-pressure refrigerant is converted into a high-pressure refrigerant and enters the condenser. Accordingly, whether the liquid reservoir is fixed on the side or the bottom of the main body, the liquid reservoir needs to use two sets of shells separately from the main body to ensure that the cooling oil and the refrigerant in the main body will not be excessively mixed, thereby ensuring the normal operation of the mechanical structure in the main body and the normal operation of the refrigeration pipeline.

[0040] The main body includes a shell 1 and a compression mechanism, and the compression mechanism includes a cylinder and a lower bearing 2. The cylinder and the lower bearing 2 are both installed in the shell 1. The cylinder is used to compress the refrigerant, and the lower bearing 2 provides support and fixation for the cylinder to ensure the normal operation of the cylinder in the main body. With the development of miniaturization of household appliances, the size of the compressor is gradually getting smaller. In order to further reduce the size of the compressor, the reservoir and the main body can be designed to share a shell 1, but the structure such as the lower bearing 2 needs to be improved accordingly, and the cooling oil and the refrigerant need to be separated inside the shell 1.

[0041] In a vertical compressor, after the compressor and the liquid storage tank are integrated, the low-temperature and low-pressure refrigerant will flow back to the bottom of the compressor, and then be compressed by the cylinder to form a high-temperature and high-pressure refrigerant and enter the top of the compressor, and an oil cover 3 will be provided on the lower end surface of the lower bearing 2 in the compressor to receive the lubricating oil returned from the cylinder; therefore, in fact, the lower bearing 2 and the oil cover 3 in the compressor will jointly distinguish the high-temperature and high-pressure area (or high-pressure area, high-temperature area) and the low-temperature and low-pressure area (or low-pressure area, low-temperature area) of the compressor, wherein the low-temperature and low-pressure area is the liquid storage part of the compressor; however, the defect existing in the above structure is that the lubricating oil flowing back from the cylinder to the oil cover 3 also has a high temperature. When the lubricating oil flows back to the oil cover 3, the heat of the lubricating oil will be transferred to the low-temperature and low-pressure refrigerant in the liquid storage part of the compressor through the oil cover 3, thereby causing the refrigerant in the liquid storage part to overheat ineffectively, thereby affecting the energy efficiency of the compressor.

[0042] Reference Figures 1 to 3 In order to solve the above problems, the utility model proposes a compressor; in the utility model, the compressor includes a housing 1, a cylinder and a lower bearing 2, and the cylinder and the lower bearing 2 are both installed in the housing 1; a pipeline for cooling oil and refrigerant to enter is opened on the lower bearing 2; the compressor in the utility model also includes an oil cover 3, which is arranged on the end surface of the lower bearing 2, so that an oil storage cavity is formed between the oil cover 3 and the lower bearing 2; the outer surface of the oil cover 3 cooperates with the housing 1 to form a liquid storage cavity, and the liquid storage cavity is used to store low-temperature and low-pressure refrigerant, thereby completing the isolation of the cooling oil and the refrigerant; and in order to improve the sealing effect between the oil cover 3 and the lower bearing 2, the integrated compressor in the utility model also includes a sealing gasket, which is arranged between the oil cover 3 and the lower bearing 2, so that the sealing gasket will provide a seal between the oil cover 3 and the lower bearing 2; the reason for setting the sealing gasket is that the end surface of the lower bearing 2 cannot be finely processed, so the oil cover 3 may not fit tightly with the lower bearing 2, so a sealing gasket is required to provide a seal for the two.

[0043] Specifically, the cylinder and its surrounding parts can be collectively referred to as a compression mechanism, the oil storage chamber will store the cooling oil refluxed from the compression mechanism, and the compressor will be provided with an oiling mechanism for pumping the cooling oil in the oil storage chamber to various mechanical parts, and the compression mechanism and the oiling mechanism are both provided above the oil cover 3. Therefore, in fact, the lower bearing 2 will distinguish the high-temperature and high-pressure area and the low-temperature and low-pressure area (i.e., the liquid storage chamber) in the housing 1 together with the oil cover 3; in order to prevent the heat of the cooling oil refluxed in the oil cover 3 from being transferred to the liquid storage chamber through the oil cover 3, the compressor proposed by the utility model also includes a heat insulation cover 4, which is provided below the oil cover 3 and covers the oil cover 3, and a heat insulation gap is provided between the heat insulation cover 4 and the oil cover 3, that is, the heat insulation cover 4 is used to generate a heat insulation gap between the liquid storage chamber and the outer surface of the oil cover 3, so that the liquid storage chamber does not directly contact the outer surface of the oil cover 3, thereby preventing the heat transfer of the cooling oil.

[0044] Reference Figure 4 In the present invention, it is considered that the oil cap 3 needs to separate the refrigerant and the cooling oil, that is, the oil cap 3 needs to maintain the integrity of its structure while providing storage space for the cooling oil to ensure that the oil cap 3 is not easily deformed. Therefore, the oil cap 3 needs to have a certain wall thickness, and the material of the oil cap 3 is as far as possible not easy to deform and does not chemically react with the refrigerant and the cooling oil; the wall thickness of the oil cap 3 will provide the oil cap 3 with better structural strength, so that the oil shell is not easy to deform under the dual pressure of the cooling oil and the refrigerant, thereby ensuring the isolation effect of the oil cap 3 on the refrigerant and the cooling oil, and improving the integrity of the overall structure.

[0045] In order to adapt to the overall shape of the compressor, the cross-section of the oil cap 3 is circular, that is, the oil cap 3 as a whole is similar to a cylinder, so as to improve the adaptability of the oil cap 3 to the overall structure; it should be noted that the shape of the oil cap 3 can be adjusted according to actual design needs or structural needs to ensure the isolation effect of the oil cap 3 on the refrigerant and cooling oil.

[0046] Reference Figure 3 , Figure 4 In order to fix the oil cover 3 on the lower bearing 2, the end surface of the oil cover 3 in contact with the lower bearing 2 has a first flange 31; it should be emphasized that in this embodiment, the cross section of the oil cover 3 is circular, so that the first flange 31 is ring-shaped, and the first flange 31 is integrally formed on the outer circumferential side of the oil cover 3; the contact surface of the first flange 31 and the lower bearing 2 and the end surface of the oil cover 3 are located in the same plane to ensure the fit between the oil cover 3 and the lower bearing 2; accordingly, a fixing hole 32 is opened on the first flange 31; a fastener 33 is arranged in the fixing hole 32, and the first flange 31 The oil cover 3 is fixed to the lower bearing 2 by the fastener 33, thereby completing the fixation of the oil cover 3; in the present embodiment, the fastener 33 is a screw of the lower bearing 2, i.e., the oil cover 3 and the lower bearing 2 share a screw; during installation, the oil cover 3 and the sealing gasket can be installed together with the lower bearing 2 when the lower bearing 2 is assembled; the setting of the oil cover 3 and the lower bearing 2 sharing a screw makes it unnecessary to re-drill holes or set other fixing structures on the lower bearing 2 when fixing the oil cover 3, i.e., ensuring the structural integrity of the lower bearing 2; in other embodiments, the fastener 33 can also be other objects such as rivets that can complete a fixed connection.

[0047] In order to introduce the refrigerant in the liquid storage chamber into the cylinder, an oil return channel is provided on the lower bearing 2, and the refrigerant and the cooling oil that enters the liquid storage chamber along the refrigeration pipeline can enter the cylinder through the oil return channel; it should be noted that the oil return channel in the utility model is connected to an oil return pipe, and the oil return pipe will introduce the refrigerant and the cooling oil into the cylinder. In order to ensure the normal operation of the oil return pipe, the first flange 31 and the outer periphery of the sealing gasket are both recessed to form a pipe opening 43 for making way for the oil return pipe. The oil return pipe can be embedded in the pipe opening 43, thereby ensuring the stable operation of the oil return pipe and improving the adaptability of the overall structure; and the setting of the first flange 31 and the pipe opening 43 on the sealing gasket will limit the oil return pipe to a certain extent, further improving the stability of the overall structure.

[0048] In order to ensure the structural strength of the pipe opening 43 on the first flange 31, the pipe opening 43 can be made to protrude into the oil storage cavity, and correspondingly, an adaption groove 44 adapted to the shape of the pipe opening 43 is also provided on the side wall of the oil cover 3, that is, the outer peripheral wall of the oil cover 3 is recessed to form an adaption groove 44. In other words, the side wall of the oil cover 3 corresponding to the pipe opening 43 protrudes into the oil storage cavity to form an adaption groove 44. The protruding setting of the pipe opening 43 into the oil storage cavity increases the thickness of the first flange 31 at the setting of the pipe opening 43 in disguised form, thereby ensuring that the first flange 31 and the oil cover 3 are not easily insufficient in structural strength due to the setting of the pipe opening 43, thereby ensuring the reliability and service life of the overall structure.

[0049] Reference Figure 3 Based on the above description, in the present utility model, the heat shield 4 is arranged on the oil cover 3 to isolate the direct contact between the liquid storage cavity and the outer surface of the oil cover 3, thereby reducing the heat transferred from the cooling oil in the oil cover 3 to the liquid storage cavity, and further reducing the ineffective heat absorption of the refrigerant in the liquid storage cavity. Specifically, the heat shield 4 has a second flange 41, and the second flange 41 is fixed on the lower bearing 2, so that the heat shield 4 is entirely covered on the oil cover 3; from the overall perspective of the compressor, the heat shield 4 is arranged below the oil cover 3 and covers the oil cover 3, and then the heat shield 4 can isolate the outer surface of the oil cover 3 from the refrigerant to prevent the heat transfer from the cooling oil to the refrigerant.

[0050] Reference Figures 5 to 7It should be noted that, in order to improve the integration of the overall structure, the second flange 41, the first flange 31 and the lower bearing 2 can share the fastener 33, thereby simplifying the number of parts and reducing the complexity of the overall structure; specifically, the second flange 41 is also provided with a fixing hole 32, and the fixing holes 32 on the second flange 41 correspond one to one with the fixing holes 32 on the first flange 31, and the fastener 33 can pass through the fixing holes 32 on the second flange 41 and the first flange 31 in turn and then be fixedly connected to the lower bearing 2, that is, the first flange 31 is located between the second flange 41 and the lower bearing 2, thereby improving the integration of the overall structure, reducing the parts required for fixing the second flange 41, and reducing the difficulty of installing the overall structure.

[0051] Reference Figure 8 , Fig. 9 Optionally, in order to further improve the stability of the heat shield 4, that is, to reduce the possibility of the heat shield 4 falling off from the oil cover 3, the outer periphery of the second flange 41 can be bent downward to form a connecting ring 46, and the connecting ring 46 can be fixedly connected to the shell 1; specifically, after the heat shield 4 and the oil cover 3 are both installed on the lower bearing 2, the connecting ring 46 can be welded and fixed to the shell 1, thereby increasing the fixing points of the heat shield 4, so that the heat shield 4 can be fixed by welding the connecting ring 46 and the shell 1 in addition to being installed on the lower bearing 2 by the fasteners 33, thereby further improving the stability of the heat shield 4; from another perspective, establishing a fixed relationship between the heat shield 4 and the shell 1 will further improve the consistency and stability of the overall structure.

[0052] Accordingly, based on the above ideas, considering that the second flange 41 and the first flange 31 share the fastener 33, the second flange 41 will fit tightly with the first flange 31, which can be understood as part of the oil cap 3 will fit tightly with part of the heat insulation cover 4, so that there is still a possibility that the heat of the cooling oil will be transferred to the heat insulation cover 4 through the oil cap 3, and then transferred to the liquid storage chamber by the heat insulation cover 4; in order to reduce the heat transfer between the oil cap 3 and the heat insulation cover 4, a heat insulation gasket 42 is arranged between the first flange 31 and the second flange 41. The setting of the heat insulation gasket 42 will effectively reduce the heat transfer between the oil cap 3 and the heat insulation cover 4, further reduce the possibility of ineffective overheating of the refrigerant in the liquid storage chamber, and ensure the energy efficiency of the compressor.

[0053] Reference Figures 6 to 9In one embodiment of the utility model, the heat insulating gasket 42 can be an integrated gasket, that is, the heat insulating gasket 42 has a shape and size similar to the first flange 31 and / or the second flange 41, and the heat insulating gasket 42 is provided with a through hole 421 for the fastener 33 to pass through; when installing the heat insulating gasket 42, the heat insulating gasket 42 can be first placed on the second flange 41, and the through hole 421 is aligned with the fixing hole 32 on the second flange 41; then the oil cover 3 is placed in the heat insulation cover 4, and the fixing hole 32 on the first flange 31 is aligned with the through hole 421 of the heat insulating gasket 42, and then the end of the fastener 33 is inserted from the side of the second flange 41 away from the first flange 31, and the end of the fastener 33 will pass through the fixing hole 32 of the second flange 41, the through hole 421 and the fixing hole 32 of the first flange 31 in sequence, and then the overall structure is installed on the lower end surface to complete the installation.

[0054] It should be noted that a plurality of heat-insulating grooves 422 may be provided at intervals on the heat-insulating gasket 42, and the plurality of heat-insulating grooves 422 may be evenly spaced along the curvature of the heat-insulating gasket 42, or may be irregularly spaced; the purpose of providing the heat-insulating grooves 422 is to form an air gap between the first flange 31 and the second flange 41, so as to further improve the heat-insulating effect, thereby further reducing the heat transferred from the oil cover 3 to the heat-insulating cover 4; in addition, the heat-insulating grooves 422 may also have a variety of shapes, such as regular or irregular shapes such as arcs, rectangles or trapezoids, and a gap may be formed between the first flange 31 and the second flange 41; it should be noted that in addition to the heat-insulating grooves 422, heat-insulating protrusions may also be provided on the heat-insulating gasket 42, and the heat-insulating protrusions may also have a variety of regular or irregular shapes, thereby forming a gap between the first flange 31 and the second flange 41 to isolate the heat transfer. The above is merely an example, and the specific shape, quantity, style and distribution of the heat insulation grooves 422 or the heat insulation protrusions on the heat insulation gasket 42 can be designed according to actual needs.

[0055] Reference Figures 7 to 9 Based on the above, considering that the heat-insulating gasket 42 is set, it is also necessary to match the pipe opening 43 formed by the first flange 31 to make way for the return air and oil pipe, the outer periphery of the second flange 41 and the integrated gasket can also be recessed to form a pipe opening 43, so that the setting of the second flange 41 and the integrated gasket will also make way for the return air and oil pipe, thereby ensuring the normal operation of the cylinder; in addition, the setting of the second flange 41 and the pipe opening 43 of the integrated gasket will improve the degree of uniformity of the shapes of the first flange 31, the second flange 41 and the integrated gasket, further improving the integration of the overall structure.

[0056] In another embodiment of the present invention, the heat insulating gasket 42 can be made of a plurality of split gaskets, and the number of the split gaskets is equal to the number of the fixing holes 32, so that the split gaskets can correspond to the fixing holes 32 one by one; it should be noted that the split gaskets can have different shapes and thicknesses, for example, the split gaskets can be generally in regular shapes such as circles and squares, but in order to maintain the strength of the installation and the uniformity of the structure, the split gaskets installed between the same oil cover 3 and the heat insulating cover 4 have the same shape and thickness to avoid the same oil cover. 3 and the heat shield 4 but in different positions of the fasteners 33; for example, if they are installed between the same oil cover 3 and the heat shield 4, but the thicknesses of the two split gaskets that are farthest apart are different, the fasteners 33 respectively matched with the two split gaskets may have different torques, so that the two fasteners 33 are subjected to different forces after the fixing is completed, which may cause different service lives of the two, thereby greatly increasing the possibility of the heat shield 4 falling off from the oil cover 3 during the operation of the overall structure, that is, increasing the possibility of failure of the heat shield 4.

[0057] Reference Fig. 9 It should also be noted that after using the split gasket, the refrigerant in the liquid storage cavity may pass through the gap between the second flange 41 and the first flange 31 and enter the insulation gap formed between the outer surface of the oil cover 3 and the inner surface of the heat insulation cover 4, but the fluidity of the refrigerant will be greatly reduced after entering, that is, the refrigerant in the insulation gap will find it difficult to transfer heat to the refrigerant in the liquid storage cavity, thereby not affecting the insulation effect of the insulation gap on the oil cover 3.

[0058] In the present utility model, in order to further improve the adaptability of the overall structure, an adaption groove 44 is also formed on the outer peripheral wall of the heat insulation cover 4, so that the heat insulation cover 4 maintains the uniformity of shape with the oil cover 3, thereby ensuring the adaptability between the oil cover 3 and the heat insulation cover 4; and the adaption groove 44 on the heat insulation cover 4 can also make way for the return air and oil return pipes, further ensuring the normal operation of the return air and oil return pipes.

[0059] Reference Figure 5In order to improve the heat insulation effect of the heat insulation cover 4 on the oil cover 3 and the liquid storage chamber, a plurality of combination parts are formed on the outer peripheral wall of the heat insulation cover 4, which are recessed inwards. The combination parts can change the heat insulation gap, that is, change the distance between the inner surface of the heat insulation cover 4 and the outer surface of the oil cover 3; specifically, taking the inner surface of the heat insulation cover 4 as a reference, that is, the inner surface of the heat insulation cover 4 is radially protruded to form a plurality of combination parts, and the arrangement of the combination parts makes the gap between the inner surface of the heat insulation cover 4 and the outer surface of the oil cover 3 change, thereby having a better heat insulation effect; on the other hand, the combination parts can be matched with the position of the fixing hole 32, so that the arrangement of the combination parts can also provide a space for the installation of the fastener 33, and then the arrangement of the combination parts can not only further improve the heat insulation effect of the heat insulation gap, but also facilitate the installation of the heat insulation cover 4 by the installer, thereby improving the convenience of the installation of the heat insulation cover 4.

[0060] In other embodiments of the utility model, the heat shield 4 may be embedded in the oil cap 3, that is, there is a heat insulation gap between the inner surface of the oil cap 3 and the outer surface of the heat shield 4, thereby reducing the possibility of the cooling oil transferring heat to the low-temperature refrigerant through the oil cap 3. Specifically, in addition to the above embedding method, the heat shield 4 may also be fixed inside the oil cap 3 by welding or other processes.

[0061] The utility model also proposes a refrigeration device, which includes the above-mentioned compressor. The specific structure of the compressor refers to the above-mentioned embodiment. Since the refrigeration device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0062] The above description is only an optional embodiment of the present invention, and does 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 A housing, the housing being integrally provided, and a lower bearing being provided in the housing; An oil cover, the oil cover having a first flange, the oil cover being sealingly arranged on the lower end surface of the lower bearing, and the oil cover being used to contain lubricating oil in the compressor; A heat insulation cover having a second flange, the heat insulation cover is arranged below the oil cover and covers the oil cover, a heat insulation gap is arranged between the heat insulation cover and the oil cover, and a heat insulation gasket is arranged between the first flange and the second flange.

2. The compressor according to claim 1, characterized in that The oil cover is sealed and connected to the lower bearing through the first flange.

3. The compressor according to claim 2, characterized in that The heat shield is connected to the lower bearing through the second flange.

4. The compressor according to claim 3, characterized in that The first flange is arranged between the second flange and the lower bearing.

5. The compressor according to claim 4, characterized in that A plurality of fixing holes are correspondingly formed on the first flange and the second flange, and fasteners are arranged in the fixing holes. Ends of the fasteners pass through the second flange and the first flange in sequence and are connected to the lower bearing.

6. The compressor according to claim 5, characterized in that The heat-insulating gasket is an integrated gasket, and a plurality of through holes for the fasteners to pass through are formed on the integrated gasket.

7. The compressor according to claim 6, characterized in that The first flange, the second flange and the outer periphery of the integrated gasket are all recessed to form a pipe opening, and the pipe opening is used to make way for the air return and oil return pipes.

8. The compressor according to claim 5, characterized in that The heat-insulating gaskets are a plurality of split gaskets, and the plurality of split gaskets correspond one-to-one to the plurality of fixing holes.

9. The compressor according to any one of claims 7 or 8, characterized in that The outer peripheral walls of the oil cover and the heat insulation cover are both recessed to form an adapting groove to make way for the air return and oil return pipes.

10. The compressor according to claim 9, characterized in that The outer peripheral wall of the heat insulation cover is inwardly recessed to form a plurality of combination parts, and the combination parts are used to change the thickness of the heat insulation gap.

11. The compressor according to claim 10, characterized in that The outer periphery of the second flange is bent downward to form a connecting ring, and the connecting ring is fixedly connected to the shell.

12. The compressor according to claim 1, characterized in that The heat insulation cover is embedded in the oil cover.

13. A refrigeration device, characterized in that: Comprising a compressor as claimed in any one of claims 1-12.

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