Compressor and refrigeration equipment

Abstract

The invention discloses a compressor and refrigeration equipment, and relates to the technical field of refrigeration equipment.The compressor comprises a machine shell, a crankcase, an air cylinder, a motor and a crankshaft, the crankcase is arranged on the machine shell, and a mounting shaft hole penetrating up and down is formed in the crankcase; the air cylinder is located in the machine shell and arranged on the upper side of the crankcase. The motor is located in the machine shell and arranged on the lower side of the crankcase, the motor comprises a stator component and a rotor component, the rotor component is arranged on the inner side of the stator component, and the rotor component is provided with a via hole penetrating through the upper end and the lower end of the rotor component. An eccentric part connected with a connecting rod of the air cylinder is arranged at the upper end of the crankshaft, and the lower end of the crankshaft is in transmission connection with the rotor part; and a groove is formed in the lower end of the crankcase, is annularly formed in the periphery of the mounting shaft hole and corresponds to the upper end of a stator part of the motor. According to the technical scheme, on the basis that electrical insulation is guaranteed, the distance between the crankcase and the motor is shortened, and the height of the compressor is reduced.

Description

Technical Field

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

[0002] Reciprocating refrigeration compressors are widely used in refrigerators and freezers due to their good refrigeration capacity. When designing the compressor, there is an electrical gap between the crankcase and the motor. Its main function is to ensure the electrical insulation between the motor and the crankcase, improve the reliability of the equipment and reduce the failure rate. The setting of the electrical gap not only ensures the normal operation and service life of the compressor, but also directly affects the user experience. Its existence is of great significance. The existence of this distance will also increase the height of the compressor. Refrigerator manufacturers are very sensitive to the height of the compressor. The increase in the height of the compressor will directly affect the volume of the refrigerator compartment, which will directly lead to a decrease in the economic benefits of the refrigerator. In the existing compressor design, the creepage distance has different degrees of influence on the height of the compressor depending on the motor design. Summary of the invention

[0003] The main purpose of the present invention is to provide a compressor and a refrigeration device, which aims to reduce the distance between the crankcase and the motor and reduce the overall height of the compressor while ensuring electrical insulation.

[0004] To achieve the above object, the present invention provides a compressor, comprising:

[0005] chassis;

[0006] A crankcase, arranged on the casing, wherein the crankcase is provided with a mounting shaft hole extending vertically therethrough;

[0007] a cylinder located in the casing and disposed on the upper side of the crankcase;

[0008] a motor located in the housing and disposed on the lower side of the crankcase, the motor comprising a stator component and a rotor component, the rotor component being disposed on the inner side of the stator component, the rotor component being provided with through holes disposed through the upper and lower ends thereof; and,

[0009] A crankshaft is located in the housing and rotatably cooperates with the mounting shaft hole, an eccentric portion connected to the connecting rod of the cylinder is provided at the upper end of the crankshaft, and a lower end of the crankshaft is drivingly connected to the rotor component; wherein,

[0010] The lower end of the crankcase is provided with a groove, and the groove ring is arranged on the periphery of the mounting shaft hole and is arranged corresponding to the upper end of the stator component of the motor.

[0011] In one embodiment, a projection of the upper end of the stator component on the crankcase entirely falls within the groove.

[0012] In one embodiment, the depth of the groove is greater than or equal to 3 mm.

[0013] In one embodiment, the compressor further includes an insulating structure disposed between the stator component and the crankcase.

[0014] In one embodiment, the insulating structure includes an insulating coating, an insulating board or insulating paper.

[0015] In one embodiment, the thickness of the insulating structure is less than 3 mm.

[0016] In one embodiment, the insulating structure comprises an insulating plate, and the thickness of the insulating plate is 0.5 to 3 mm; or

[0017] The insulating structure includes an insulating coating, and the thickness of the insulating coating is 0.1 to 0.3 mm; or,

[0018] The insulating structure comprises insulating paper, and the thickness of the insulating paper is between 0.05 and 0.2 mm.

[0019] In one embodiment, the insulating structure includes an insulating coating, and a protective film is disposed on the outer side of the insulating coating.

[0020] In one embodiment, the insulating structure is arranged at the groove; or,

[0021] The insulating structure is disposed at an upper end of the stator component.

[0022] In one embodiment, the insulating coating is at least provided on the bottom wall of the groove; or,

[0023] The insulating plate is installed in the groove; or,

[0024] The insulating plate is disposed at the upper end of the stator component; or,

[0025] The insulating plate is arranged outside the groove and covers the notch of the groove.

[0026] In one embodiment, a first positioning groove is provided at the bottom of the groove, and a first positioning protrusion cooperating with the first positioning groove is provided on the upper side of the insulating plate; or,

[0027] A second positioning groove is provided on the upper side of the stator component, and a second positioning protrusion matched with the second positioning groove is convexly provided on the lower side of the insulating plate.

[0028] The present invention also provides a refrigeration device, comprising the compressor, wherein the compressor comprises:

[0029] chassis;

[0030] A crankcase, arranged on the casing, wherein the crankcase is provided with a mounting shaft hole extending vertically therethrough;

[0031] a cylinder located in the casing and disposed on the upper side of the crankcase;

[0032] a motor located in the housing and disposed on the lower side of the crankcase, the motor comprising a stator component and a rotor component, the rotor component being disposed on the inner side of the stator component, the rotor component being provided with through holes disposed through the upper and lower ends thereof; and,

[0033] A crankshaft is located in the housing and rotatably cooperates with the mounting shaft hole, an eccentric portion connected to the connecting rod of the cylinder is provided at the upper end of the crankshaft, and a lower end of the crankshaft is drivingly connected to the rotor component; wherein,

[0034] The lower end of the crankcase is provided with a groove, and the groove ring is arranged on the periphery of the mounting shaft hole and is arranged corresponding to the upper end of the stator component of the motor.

[0035] In the technical solution of the present invention, the rotor component is driven to rotate by the stator component, so that the crankshaft connected to the rotor component can be transmitted in the crankcase, driving the connecting rod connected thereto to perform telescopic movement in the cylinder to complete power transmission. In the technical solution of the present invention, the groove is opened on the crankcase. For this purpose, the electrical gap between the stator component and the crankcase is increased without increasing the gap between the crankcase and the motor, so as to improve the insulation performance between the stator component and the crankcase. In this way, the insulation performance between the stator component and the crankcase is improved without increasing the gap between the crankcase and the motor, so that the overall height of the compressor can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0037] Figure 1 A schematic cross-sectional view of a partial structure of an embodiment of a compressor provided by the present invention;

[0038] Figure 2 for Figure 1 A schematic structural diagram of an embodiment of an insulating plate;

[0039] Figure 3 for Figure 2 A schematic cross-sectional view of an insulating plate in FIG.

[0040] Figure 4 A schematic cross-sectional view of a partial structure of another embodiment of a compressor provided by the present invention;

[0041] Figure 5 for Figure 4 A schematic structural diagram of an embodiment of an insulating plate;

[0042] Figure 6 for Figure 5 A schematic cross-sectional view of an insulating plate in FIG.

[0043] Figure 7 for Figure 4 A bottom view of the crankcase in FIG.

[0044] Figure 8 for Figure 1 or Figure 4 A schematic structural diagram of an embodiment of a crankcase in FIG.

[0045] Fig. 9 for Figure 8 Schematic diagram of the structure of the insulating coating.

[0046] Description of Figure Numbers:

[0047] 100. Compressor;

[0048] 1. Motor; 11. Stator component; 12. Rotor component; 13. Second positioning groove; 14. Via hole;

[0049] 2. crankcase; 21. groove; 22. first positioning groove; 23. mounting shaft hole;

[0050] 3. Insulation structure; 31. Insulation coating; 32. Insulation plate; 321. First positioning protrusion; 322. Second positioning protrusion;

[0051] 4. Cylinder.

[0052] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0055] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, 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 limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, 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 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 combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0056] Reciprocating refrigeration compressors are widely used in refrigerators and freezers due to their good refrigeration capacity. When designing the compressor, there is an electrical gap between the crankcase and the motor. Its main function is to ensure the electrical insulation between the motor and the crankcase, improve the reliability of the equipment and reduce the failure rate. The setting of the electrical gap not only ensures the normal operation and service life of the compressor, but also directly affects the user experience. Its existence is of great significance. The existence of this distance will also increase the height of the compressor. Refrigerator manufacturers are very sensitive to the height of the compressor. The increase in the height of the compressor will directly affect the volume of the refrigerator compartment, which will directly lead to a decrease in the economic benefits of the refrigerator. In the existing compressor design, the creepage distance has different degrees of influence on the height of the compressor depending on the motor design.

[0057] In order to solve the above technical problems, the present invention provides a compressor 100, such as Figure 1 As shown, Figure 1Only a partial structure of the compressor 100 is shown, and the compressor 100 includes a casing (not shown), a crankcase 2, a cylinder 4 (only the cylinder block is shown in the figure), a motor 1 and a crankshaft (not shown). The crankcase 2 is arranged in the casing, and the crankcase 2 is provided with a mounting shaft hole 23 which is arranged to pass through from top to bottom; the cylinder 4 is located in the casing and is arranged on the upper side of the crankcase 2; the motor 1 is located in the casing and is arranged on the lower side of the crankcase 2, and the motor 1 includes a stator component 11 and a rotor component 12, and the rotor component 12 is arranged on the inner side of the stator component 11, and the rotor component 12 is provided with a through hole 14 which passes through its upper and lower ends; and the crankshaft is located in the casing and rotatably cooperates with the mounting shaft hole 23, and the upper end of the crankshaft is provided with an eccentric portion connected to the connecting rod of the cylinder 4, and the lower end of the crankshaft is drivingly connected to the rotor component 12; wherein, the lower end of the crankcase 2 is provided with a groove 21, and the groove 21 is arranged around the periphery of the mounting shaft hole 23, and is arranged corresponding to the upper end of the stator component 11 of the motor 1.

[0058] like Figure 1 and Figure 4 As shown, in the technical solution of the present invention, the stator component 11 drives the rotor component 12 to rotate, so that the crankshaft connected to the rotor component 12 can be driven in the crankcase 2, driving the connecting rod connected thereto to perform telescopic movement in the cylinder 4, and completing power transmission. The groove 21 is provided on the crankcase 2. For this purpose, the electrical clearance between the stator component 11 and the crankcase 2 is increased without increasing the clearance between the crankcase 2 and the motor 1, so as to improve the insulation performance between the stator component 11 and the crankcase 2. In this way, the insulation performance between the stator component 11 and the crankcase 2 is improved without increasing the clearance between the crankcase 2 and the motor 1, so that the overall height of the compressor 100 can be reduced.

[0059] It is understandable that the stator component 11 can be detachably connected to the crankcase 2 to facilitate installation and disassembly and maintenance. Specifically, in one embodiment, the stator component 11 is connected to the crankcase 2 by bolts.

[0060] like Figures 7 to 9As shown, it can be understood that the groove 21 may correspond partially or completely to the stator component 11. In addition, the notch size of the groove 21 may be larger than the size of the stator component 11, in which case the notch size of the groove 21 can cover the stator component 11 and extend to cover the rotor component 12; or it may be equal to the size of the stator component 11. In view of this, in one embodiment, the projection of the upper end of the stator component 11 on the crankcase 2 falls entirely within the groove 21. In this way, by having the projection of the stator component 11 fall within the groove 21, each position of at least one end of the stator component 11 close to the crankcase 2 may be arranged corresponding to the groove 21, so that at least one end of the stator component 11 close to the crankcase 2 maintains a sufficient creepage distance with the crankcase 2.

[0061] It is understandable that the geometric shape of the cross section of the groove 21 can be one of a rectangular, circular, elliptical and V-shaped. In order to adapt to the shape of the stator component 11, the groove 21 reduces the area of ​​the crankcase 2 where the groove 21 is opened to avoid causing adverse effects, such as adverse effects on the strength of the crankcase 2. In addition, the shape of the groove 21 is to adapt to the arrangement of multiple winding areas on the stator component 11. For this purpose, the ring can be a circular, elliptical, polygonal or closed shape, which will not be specifically described here.

[0062] In one embodiment, the depth of the groove 21 is greater than or equal to 3 mm. This arrangement can ensure the electrical gap between the crankcase 2 and the stator component 11, so as to reserve a sufficient insulation distance to prevent breakdown caused by voltage difference, that is, to prevent the current from flowing through the air or other media, causing safety hazards such as short circuit or arc discharge. At the same time, considering the depth of the groove 21 and the thickness of the crankcase 2, therefore, on the basis of ensuring the strength of the crankcase 2, the depth of the groove 21 can be 3 mm, 3.2 mm and 3.5 mm, and the specific value is not particularly limited here, and is subject to the design requirements of actual use.

[0063] In one embodiment, the compressor 100 further includes an insulating structure 3, and the insulating structure 3 is disposed between the stator component 11 and the crankcase 2. In this way, the insulating structure 3 can further improve the insulation effect between the stator component 11 and the crankcase 2. The insulating structure 3 can be disposed on the stator component 11; or on the crankcase 2; or on both the stator component 11 and the crankcase 2.

[0064] like Figure 2 , Figure 5 as well as Fig. 9 As shown, in one embodiment, the insulating structure 3 includes an insulating coating 31, an insulating plate 32 or insulating paper. In this way, the insulating coating 31 can be applied to the bottom of the groove 21 to facilitate close fitting so that the insulation effect can remain stable. Or by sandwiching the insulating plate 32 between the stator component 1111 and the crankcase 2, it is easy to install and increase the flexibility of installation. Or by using the high dielectric strength of the insulating paper, the insulation strength between the crankcase 2 and the stator component 11 is improved. It is understandable that the insulating plate 32 is a plate made of insulating material, which is usually used to provide physical isolation between two conductive parts. Common insulating plate 32 materials include glass fiber, polyester, and polytetrafluoroethylene. The insulating coating 31 is a thin layer coated on a metal surface or other conductive material to prevent current from passing. It can be an organic material (such as epoxy resin, polyurethane) or an inorganic material (such as ceramic). The insulating paper is a paper with high dielectric strength. The insulating paper is usually made of cellulose fibers (such as wood pulp or cotton pulp) and may be specially treated to enhance its electrical properties, mechanical strength and heat resistance.

[0065] In one embodiment, the thickness of the insulating structure 3 is less than 3 mm. In this way, by setting the thickness of the insulating structure 3 to be less than 3 mm, the electrical insulation effect can be ensured while reducing the distance between the motor 1 and the crankcase 2. The thickness of the insulating structure 3 can be 3 mm, 2.5 mm, 1.5 mm, and 0.5 mm. The specific thickness selection can be adaptively adjusted according to the materials used by the different insulating structures 3 and the insulation effect.

[0066] Optionally, in one embodiment, the insulating structure 3 includes an insulating plate 32, and the thickness of the insulating plate 32 is 0.5 to 3 mm. In this way, the commonly used insulating plate materials (such as glass fiber reinforced plastic (FR-4), epoxy glass cloth board (G10), polyimide board (PI), polytetrafluoroethylene board (PTFE)) still have a very high dielectric strength within this thickness range, which is sufficient to prevent breakdown under high voltage. In addition, the insulating plate 32 at this thickness can reduce the electrical gap between the crankcase 2 and the motor 1. The thickness of the insulating plate 32 can be set to 0.5 mm, 1.0 mm, 1.5 mm, 3 mm, and there is no special limitation here.

[0067] Optionally, in another embodiment, the insulating structure 3 includes an insulating coating 31, and the thickness of the insulating coating 31 is 0.1 to 0.3 mm. In this way, the commonly used insulating plate materials (such as polyurethane, polyamide, polyurethane-polyamide copolymer, etc.) still have a high dielectric strength within this thickness range, which is sufficient to prevent breakdown under high voltage. The thickness of the insulating coating 31 can be set to 0.1 mm, 0.2 mm and 0.3 mm, without special limitation.

[0068] Optionally, in another embodiment, the insulating structure 3 includes insulating paper, and the thickness of the insulating paper is 0.05 to 0.2 mm. In this way, the insulating paper (the material of the insulating paper can be lignin fiber, aromatic polyimide fiber, etc.) can help reduce the overall volume and weight while maintaining good insulation performance. The thickness of the insulating paper can be set to 0.05, 0.15 mm, 0.2 mm, without special limitation.

[0069] In one embodiment, the insulating structure 3 includes an insulating coating 31, and a protective film is arranged on the outside of the insulating coating 31. In this way, the surface of the insulating coating 31 can be protected by the protective film, so that the particles of the insulating coating 31 can be prevented from falling off, and defects such as tiny cracks or unevenness can be caused on the surface of the insulating coating 31. These defects will cause local electric field concentration, thereby increasing the risk of surface breakdown. In addition, the protective film can reduce the adhesion of pollutants such as dust and oil to the surface of the insulating coating 31 to affect its insulation performance; it can also reduce the erosion of the insulating coating 31 by oxygen, water vapor, and other environmental factors, delay the aging process of the insulating coating 31, and extend its service life. It is understandable that the material of the protective film can be polyester film (PET), polypropylene film (PP), polyethylene film (PE), polyvinyl chloride film (PVC), polyimide film (PI), polytetrafluoroethylene film (PTFE) and high-density polyethylene (HDPE), and the specific selection can be determined according to actual needs. Specifically, in one embodiment, the protective film is made of high-density polyethylene (HDPE), which is a thermoplastic plastic with excellent performance. It not only has high strength, hardness and toughness, but also has good chemical corrosion resistance, wear resistance and electrical insulation.

[0070] In one embodiment, the insulating structure 3 is disposed at the groove 21. In this way, by disposing the insulating structure 3 in the groove 21, the insulating structure 3 can be arranged using the space of the groove 21, and the distance between the motor 1 and the crankcase 2 can be further shortened while maintaining the existing insulation effect.

[0071] Optionally, in one embodiment, the insulating coating 31 is at least provided on the bottom wall of the groove 21. Such a provision can reduce the gap between the motor 1 and the crankcase 2. It is understandable that the insulating coating 31 can also be provided on the peripheral side wall of the groove 21 to ensure the continuity of the insulating effect. In addition, the insulating coating 31 can be provided in the groove 21 by means of a spraying process so that the insulating coating 31 can be tightly fitted with the crankcase 2.

[0072] Optionally, in another embodiment, the insulating plate 32 is installed in the groove 21. In this way, the insulating plate 32 can reduce the gap between the motor 1 and the crankcase 2. Figures 5 to 7 As shown, further, in one embodiment, a first positioning groove 22 is provided at the bottom of the groove 21, and a first positioning protrusion 321 cooperating with the first positioning groove 22 is convexly provided on the upper side of the insulating plate 32. In this way, the insulating plate 32 can be fixed to the groove 21 by the cooperation of the first positioning protrusion 321 and the first positioning groove 22, so as to maintain the stability of the insulation effect between the stator component 11 and the crankcase 2. Specifically, the first positioning protrusion 321 can be connected to the crankcase 2 by interference fit. It can be understood that the first positioning protrusion 321 can be circular, polygonal and irregular in shape, and the first positioning groove 22 is adapted to the shape of the first positioning protrusion 321. In addition, a plurality of the first positioning protrusions 321 can be provided, and the number of the first positioning grooves 22 and the first positioning protrusions 321 is matched, and the first positioning protrusions 321 are arranged one by one. In addition, in one embodiment, the height of the first positioning protrusion 321 is less than or equal to the depth of the first positioning groove 22, so that the side of the insulating plate 32 facing the bottom of the groove 21 can be in contact with the bottom of the groove 21, thereby better utilizing the space in the groove 21 and reducing the distance between the motor 1 and the crankcase 2. Specifically, in one embodiment, the height of the first positioning protrusion 321 is 4.5 mm. Further, in one embodiment, glue is applied in the first positioning groove 22, so that when the first positioning protrusion 321 is installed in the first positioning groove 22, the connection strength between the first positioning protrusion 321 and the first positioning groove 22 is improved. Specifically, in one embodiment, the thickness of the glue is less than or equal to 0.5 mm.

[0073] Optionally, in another embodiment, the insulating plate 32 is arranged outside the groove 21 and covers the notch of the groove 21. With this arrangement, the insulating plate 32 is used to close the groove 21 to ensure the insulation effect while making it easier to assemble and reducing installation time and cost.

[0074] In one embodiment, the insulating structure 3 is arranged at the upper end of the stator component 11. In this way, by directly installing the insulating structure 3 on the stator component 11, the complexity of installation and disassembly can be reduced, which is convenient for improving production efficiency or immediate maintenance. Optionally, in one embodiment, the insulating plate 32 is arranged at the upper end of the stator component 11. In this way, since the insulating plate 32 can be pre-manufactured, by installing the insulating plate 32 on the top of the stator component 11, the assembly process can be simplified, and it is easier to inspect or repair when necessary. Further, in one embodiment, a second positioning groove 13 is provided on the upper side of the stator component 11, and a second positioning protrusion 322 cooperating with the second positioning groove 13 is convexly provided on the lower side of the insulating plate 32. In this way, the insulating plate 32 can be fixed to the motor 1 through the cooperation of the second positioning protrusion 322 and the second positioning groove 13, which is conducive to maintaining the stability of the insulation effect between the motor 1 and the crankcase 2. It can be understood that the second positioning protrusion 322 can be circular, polygonal and irregular in shape, and the second positioning groove 13 is adapted to the shape of the second positioning protrusion 322. In addition, the second positioning protrusion 322 can be provided in plurality, and the second positioning groove 13 matches the number of the second positioning protrusion 322 and is provided one-to-one with the second positioning protrusion 322. In addition, the insulating plate 32 can be connected to the stator component 11 by glue or snaps. Specifically, in one embodiment, the second positioning protrusion 322 is arranged at the periphery of the insulating plate 32, and the second positioning groove 13 is arranged at the periphery of the motor 1 corresponding to the stator component 11. This fixing method can not only make the position of the insulating plate 32 accurate, enhance the insulation of the entire motor 1, but also provide additional mechanical support. Further, in one embodiment, the height of the second positioning protrusion 322 is greater than or equal to 6 mm.

[0075] The present invention 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 described one by one here.

[0076] It is understandable that the refrigeration equipment may be in various forms such as refrigerators, air conditioners, cold storages, refrigerated trucks, and refrigerated cabinets. These devices all utilize the refrigeration principle and meet different refrigeration needs through different structures and designs, and will not be described in detail here.

[0077] In an embodiment of the present invention, the refrigeration device is a refrigerator. In actual application, the internal structure of the refrigerator can be optimized when the refrigeration capacity is determined, so that the volume can be reduced without reducing the refrigeration capacity. The volume ratio of the refrigerator can also be increased on the basis of a fixed external size of the refrigerator, so as to ensure a sufficiently large working volume (also used for the space of the refrigeration and freezing compartments), thereby bringing better economic value.

[0078] The above description is only an exemplary 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 technical 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: chassis; A crankcase, arranged on the casing, wherein the crankcase is provided with a mounting shaft hole extending vertically therethrough; a cylinder located in the casing and disposed on the upper side of the crankcase; a motor located in the housing and disposed on the lower side of the crankcase, the motor comprising a stator component and a rotor component, the rotor component being disposed on the inner side of the stator component, the rotor component being provided with through holes disposed through the upper and lower ends thereof; and, A crankshaft is located in the housing and rotatably cooperates with the mounting shaft hole, an eccentric portion connected to the connecting rod of the cylinder is provided at the upper end of the crankshaft, and a lower end of the crankshaft is drivingly connected to the rotor component; wherein, The lower end of the crankcase is provided with a groove, and the groove ring is arranged on the periphery of the mounting shaft hole and is arranged corresponding to the upper end of the stator component of the motor.

2. The compressor according to claim 1, characterized in that The projection of the upper end of the stator component on the crankcase falls entirely within the groove.

3. The compressor according to claim 1, characterized in that The depth of the groove is greater than or equal to 3 mm.

4. The compressor according to claim 1, characterized in that The compressor further includes an insulating structure disposed between the stator component and the crankcase.

5. The compressor according to claim 4, characterized in that The insulating structure includes an insulating coating, an insulating board or insulating paper.

6. The compressor according to claim 4 or 5, characterized in that The thickness of the insulating structure is less than 3 mm.

7. The compressor according to claim 6, characterized in that The insulating structure comprises an insulating plate, and the thickness of the insulating plate is 0.5 to 3 mm; or, The insulating structure includes an insulating coating, and the thickness of the insulating coating is 0.1 to 0.3 mm; or, The insulating structure comprises insulating paper, and the thickness of the insulating paper is between 0.05 and 0.2 mm.

8. The compressor according to claim 5, characterized in that The insulating structure comprises an insulating coating, and a protective film is arranged on the outer side of the insulating coating.

9. The compressor according to claim 4 or 5, characterized in that: The insulating structure is arranged at the groove; or, The insulating structure is disposed at an upper end of the stator component.

10. The compressor according to claim 9, characterized in that The insulating coating is at least disposed on the bottom wall of the groove; or, The insulating plate is installed in the groove; or, The insulating plate is disposed at the upper end of the stator component; or, The insulating plate is arranged outside the groove and covers the notch of the groove.

11. The compressor according to claim 10, characterized in that A first positioning groove is provided at the bottom of the groove, and a first positioning convex portion cooperating with the first positioning groove is convexly provided on the upper side of the insulating plate; or, A second positioning groove is provided on the upper side of the stator component, and a second positioning protrusion matched with the second positioning groove is convexly provided on the lower side of the insulating plate.

12. A refrigeration device, characterized in that: Comprising a compressor according to any one of claims 1 to 11.

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