Compressor shell and compressor

Abstract

The compressor shell comprises a shell body, the shell body is of a cylindrical structure with one open end, the open end of the shell body is coaxially connected with a sleeve with two open ends, the inner diameter of the sleeve is R, the inner diameter of the shell body is r, and r is larger than or equal to 1. The inner diameter R of the sleeve and the inner diameter r of the shell body meet the relation that r / R is larger than 0.7 and smaller than 0.98. The outer peripheral wall surface of the sleeve and the outer surface of the shell body form a transition part, the outer diameter of the transition part is d, the outer diameter of the shell body is D, and the relationship between the outer diameter d of the transition part and the outer diameter D of the shell body is 0.8 < d / D < 0.985. According to the compressor shell, the sleeve with the large inner diameter is coaxially arranged at the opening end of the shell body, the sleeve is used for avoiding a wire set on an insulation framework of a motor stator, and therefore the motor stator is reasonable and convenient to assemble and arrange.

Description

Technical Field

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

[0002] The principle of the rotary compressor is to use a high-speed rotating motor to drive an eccentric shaft to compress the refrigerant in the cylinder, and realize the cooling and heating functions through the heat conversion of the refrigerant. The pulses generated by the high-speed rotation of the compressor motor and the mechanical friction of the pump body will inevitably cause the compressor to make noise.

[0003] The traditional connection method between the motor stator and the compressor housing is mainly fixed together by shrink fitting. However, due to the structural characteristics of the motor stator, a protrusion is slightly provided on its outer peripheral wall radially outward. Although the protrusion height is small, the protrusion still exerts a certain assembly stress on the motor stator fixed on the compressor housing, which increases the difficulty of the connection operation between the two. In addition, the motor stator is wired on its insulating frame, so that the wire group is relatively protruding compared to the outer wall of the insulating frame, which also exerts a certain assembly stress on the motor stator fixed on the compressor housing. Utility Model Content

[0004] Based on this, the purpose of the utility model is to solve one of the technical problems existing in the prior art.

[0005] To this end, a first aspect of an embodiment of the utility model provides a compressor housing.

[0006] A second aspect of an embodiment of the utility model provides a compressor.

[0007] In view of this, the first aspect of an embodiment of the utility model proposes a compressor casing, comprising an outer shell body, the outer shell body being a cylindrical structure with an opening at one end, the open end of the outer shell body being coaxially connected with a sleeve with openings at both ends, the inner diameter of the sleeve being R, the inner diameter of the outer shell body being r, and the inner diameter R of the sleeve and the inner diameter r of the outer shell body satisfying the relationship: 0.7<r / R<0.98; the outer peripheral wall surface of the sleeve and the outer surface of the outer shell body form a transition portion, the outer diameter of the transition portion is d, the outer diameter of the outer shell body is D, and the outer diameter d of the transition portion and the outer diameter D of the outer shell body satisfying the relationship: 0.8<d / D<0.985.

[0008] As an embodiment, a plurality of strip-shaped grooves are provided on the inner peripheral wall of the outer shell body at intervals along the axial direction, and one end of the strip-shaped groove passes through to the open end of the outer shell body.

[0009] Therefore, the embodiment of the utility model arranges a plurality of strip grooves at intervals on the inner circumference of the outer shell body, so that the inner circumference of the outer shell body can accommodate the protrusions on the outer wall of the motor stator through the strip grooves, and at the same time, the plurality of strip grooves can reduce the contact surface between the motor stator and the outer shell body, thereby reducing the assembly stress between the two; furthermore, the embodiment of the utility model arranges a sleeve with a larger inner diameter coaxially at one open end of the outer shell body, so that the wire group on the insulating frame of the motor stator can be avoided through the sleeve, so that the assembly layout of the motor stator is reasonable and convenient, and it is easy to process and produce.

[0010] As an implementation manner, a plurality of the strip-shaped grooves are evenly distributed on the inner circumferential wall of the shell body.

[0011] As an implementation manner, the number of the strip-shaped grooves is greater than or equal to 3.

[0012] As an implementation manner, the thickness of the shell body is T, the depth of the strip groove is t, and the thickness T of the shell body and the depth t of the strip groove satisfy the relationship: 0.1<t / T<0.6.

[0013] As an embodiment, the strip groove gradually expands from the bottom toward the radial inward direction of the compressor housing, and the bottom width of the strip groove is w, the width of the strip groove at the inner circumferential surface of the compressor housing is W, and the relationship between w and W satisfies: 0.7<w / W≤1.0.

[0014] As an implementation manner, the axial length of the sleeve is h, the axial length of the shell body is H, and the relationship between the axial length h of the sleeve and the axial length H of the shell body satisfies: 0.1<h / H<0.6.

[0015] As an embodiment, the thickness of the shell body is 3 mm to 6 mm.

[0016] The second aspect of the embodiment of the utility model proposes a compressor, which includes the compressor housing in any of the above technical solutions, and also includes a motor stator, wherein the plurality of strip grooves are located on the same circumferential surface, and the outer shell body forms a stator mounting portion at the circumferential surface surrounded by the plurality of strip grooves, and the motor stator is connected to the stator mounting portion by an interference fit. Therefore, the compressor has the advantages of the compressor housing in any of the above technical solutions, and can achieve the technical effects that can be achieved by the compressor housing in any of the above technical solutions. To avoid repetition, it will not be repeated here.

[0017] As an implementation manner, the inner diameter of the shell body is D, the outer diameter of the motor stator is d, and the relationship between the inner diameter D of the shell body and the outer diameter d of the motor stator satisfies: -0.25<Dd<0.06mm.

[0018] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is one of the structural schematic diagrams of the compressor housing of an embodiment of the utility model;

[0020] Figure 2 This is the second structural schematic diagram of the compressor housing of the embodiment of the utility model;

[0021] Figure 3 for Figure 2 A schematic cross-sectional view of the compressor housing along the AA direction shown;

[0022] Figure 4 This is one of the structural schematic diagrams of the compressor of an embodiment of the utility model;

[0023] Figure 5 This is the second structural schematic diagram of the compressor of the embodiment of the utility model;

[0024] Figure 6 for Figure 2 The schematic cross-sectional view of the compressor along the BB direction is shown.

[0025] Description of reference numerals:

[0026] 10. Shell body; 11. Strip groove; 12. Sleeve; 20. Motor stator; 100. Compressor housing; 200. Compressor. DETAILED DESCRIPTION

[0027] To further illustrate each embodiment, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention.

[0028] In the description of the present invention, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] The traditional connection method between the motor stator and the compressor housing is mainly fixed together by shrink fitting. However, due to the structural characteristics of the motor stator, a protrusion is slightly provided on its outer peripheral wall radially outward. Although the protrusion height is small, the protrusion still exerts a certain assembly stress on the motor stator fixed on the compressor housing, which increases the difficulty of the connection operation between the two. In addition, the motor stator is wired on its insulating frame, so that the wire group is relatively protruding compared to the outer wall of the insulating frame, which also exerts a certain assembly stress on the motor stator fixed on the compressor housing.

[0030] In view of this, an embodiment of the utility model provides a compressor housing to solve the problem of difficult assembly between the compressor housing and the motor stator.

[0031] See also Figures 1 to 6 The embodiment of the utility model provides a compressor housing 100, including a shell body 10, the shell body 10 is a cylindrical structure with one end open, the open end of the shell body 10 is coaxially connected with a sleeve 12 with two ends open, the inner diameter of the sleeve 12 is R, the inner diameter of the shell body 10 is r, and the inner diameter R of the sleeve 12 and the inner diameter r of the shell body 10 satisfy the relationship: 0.7<r / R<0.98; the outer peripheral wall surface of the sleeve 12 and the outer surface of the shell body 10 form a transition portion, the outer diameter of the transition portion is d, the outer diameter of the shell body 10 is D, and the outer diameter d of the transition portion and the outer diameter D of the shell body 10 satisfy the relationship: 0.8<d / D<0.985. Further, a plurality of strip grooves 11 are spaced apart along the axial direction on the inner peripheral wall of the shell body 10, and one end of the strip groove 11 passes through to the open end of the shell body 10.

[0032] Therefore, the embodiment of the utility model arranges a plurality of strip grooves 11 at intervals on the inner circumference of the outer shell body 10, so that the inner circumference of the outer shell body 10 can accommodate the protrusions on the outer wall of the motor stator 20 through the strip grooves 11, and at the same time, the plurality of strip grooves 11 can reduce the contact surface between the motor stator 20 and the outer shell body 10, thereby reducing the assembly stress between the two; furthermore, the embodiment of the utility model arranges a sleeve 12 with a larger inner diameter coaxially at the open end of the outer shell body 10, so that the wire group on the insulating frame of the motor stator 20 can be avoided through the sleeve 12, so that the assembly layout of the motor stator 20 is reasonable and convenient, and easy to process and produce.

[0033] Optionally, in the embodiment of the utility model, a plurality of the strip-shaped grooves 11 are evenly distributed on the inner peripheral wall of the housing body 10. Furthermore, the number of the strip-shaped grooves 11 is greater than or equal to 3.

[0034] In some embodiments of the present invention, the thickness of the shell body 10 is T, the depth of the strip groove 11 is t, and the thickness T of the shell body 10 and the depth t of the strip groove 11 satisfy the relationship: 0.1<t / T<0.6.

[0035] In some embodiments of the present invention, the strip groove 11 gradually expands from the bottom toward the radial inward direction of the compressor housing 100, and the bottom width of the strip groove 11 is w, and the width of the strip groove 11 at the inner circumferential surface of the compressor housing 100 is W, and the relationship between w and W satisfies: 0.7<w / W≤1.0.

[0036] In some embodiments of the present invention, the axial length of the sleeve 12 is h, the axial length of the shell body 10 is H, and the relationship between the axial length h of the sleeve 12 and the axial length H of the shell body 10 satisfies: 0.1<h / H<0.6.

[0037] In some embodiments of the present invention, the thickness of the housing body 10 is 3 mm to 6 mm. Therefore, the housing body 10 is designed to be thicker, which can reduce the noise generated by the motor stator 20.

[0038] The second aspect of the embodiment of the utility model proposes a compressor 200, which includes the compressor housing 100 in any of the above technical solutions, and also includes a motor stator 20, a plurality of the strip grooves 11 are located on the same circumferential surface, and the shell body 10 forms a stator mounting portion at the circumferential surface surrounded by the plurality of the strip grooves 11, and the motor stator 20 is connected to the stator mounting portion by an interference fit. Therefore, the compressor 200 has the advantages of the compressor housing 100 in any of the above technical solutions, and can achieve the technical effects that can be achieved by the compressor housing 100 in any of the above technical solutions. To avoid repetition, it will not be repeated here.

[0039] In some embodiments of the present invention, the inner diameter of the shell body 10 is D, the outer diameter of the motor stator 20 is d, and the relationship between the inner diameter D of the shell body 10 and the outer diameter d of the motor stator 20 satisfies: -0.25<Dd<0.06mm.

[0040] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model compressor housing. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A compressor housing, characterized in that: The invention comprises an outer shell body, which is a cylindrical structure with one end open. The open end of the outer shell body is coaxially connected with a sleeve with two ends open. The inner diameter of the sleeve is R, the inner diameter of the outer shell body is r, and the inner diameter R of the sleeve and the inner diameter r of the outer shell body satisfy the relationship of 0.7<r / R<0.98; the outer peripheral wall surface of the sleeve and the outer surface of the outer shell body form a transition portion, the outer diameter of the transition portion is d, the outer diameter of the outer shell body is D, and the outer diameter d of the transition portion and the outer diameter D of the outer shell body satisfy the relationship of 0.8<d / D<0.

985.

2. The compressor housing according to claim 1, characterized in that: A plurality of strip-shaped grooves are arranged on the inner peripheral wall of the shell body at intervals along the axial direction, and one end of the strip-shaped groove passes through to the opening end of the shell body.

3. The compressor housing according to claim 2, characterized in that: A plurality of the strip-shaped grooves are evenly distributed on the inner peripheral wall of the shell body.

4. The compressor housing according to claim 2, characterized in that: The number of the strip-shaped grooves is greater than or equal to 3.

5. The compressor housing according to claim 2, characterized in that: The thickness of the shell body is T, the depth of the strip groove is t, and the thickness T of the shell body and the depth t of the strip groove satisfy the relationship: 0.1<t / T<0.

6.

6. The compressor housing according to claim 2, characterized in that: The strip groove gradually expands from the bottom toward the radial inward direction of the compressor housing, and the bottom width of the strip groove is w, the width of the strip groove at the inner circumferential surface of the compressor housing is W, and the relationship between w and W satisfies: 0.7<w / W≤1.

0.

7. The compressor housing according to claim 1, characterized in that: The axial length of the sleeve is h, the axial length of the shell body is H, and the relationship between the axial length h of the sleeve and the axial length H of the shell body satisfies: 0.1<h / H<0.

6.

8. The compressor housing according to claim 1, characterized in that: The thickness of the shell body is 3 mm to 6 mm.

9. A compressor, characterized in that: It comprises a compressor housing as described in any one of claims 1 to 8, and also comprises a motor stator, wherein the plurality of strip grooves are located on the same circumferential surface, and the outer shell body forms a stator mounting portion at the circumferential surface surrounded by the plurality of strip grooves, and the motor stator is connected to the stator mounting portion by an interference fit.

10. The compressor according to claim 9, characterized in that: The inner diameter of the shell body is D, the outer diameter of the motor stator is d, and the relationship between the inner diameter D of the shell body and the outer diameter d of the motor stator satisfies: -0.25<Dd<0.06mm.

Images