Shell structure for rotor compressor

Abstract

The shell structure comprises an outer shell, an upper cover and a lower cover are welded to the upper end and the lower end of the outer shell respectively, a lower base is welded to the bottom end of the lower cover, a cylindrical inner shell is arranged in the middle of an inner cavity of the outer shell, and the upper end of the inner shell is connected with the outer shell through a compression spring assembly. One end of the side face of the outer shell protrudes outwards to form a protruding part, a plurality of arc-shaped installation parts are arranged at the upper opening end of the outer shell, the pressure spring assembly is located in the installation parts, and the pressure spring assembly comprises a support welded to the inner shell, an upper supporting pin welded to the support and a lower supporting pin welded to the bottom face of the installation parts. The upper supporting pin and the lower supporting pin are sleeved with an upper supporting block and a lower supporting block respectively, and the upper supporting block and the lower supporting block are sleeved with compressed springs. According to the compressor, the inner shell is connected with the outer shell through the pressure spring assembly, and the axial vibration of the compressor can be effectively reduced by utilizing the flexible connection characteristic of the pressure spring, so that the overall noise and vibration of the compressor are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of the housing of a rotary compressor, and more specifically, to a housing structure for a rotary compressor. Background Art

[0002] Due to the characteristics of high stability and high efficiency of the rotary compressor, the rotary compressor is widely used in the fields of air conditioners, dehumidifiers, clothes dryers, etc. However, the stator of the rotary compressor is connected to the housing by hot sleeve or three-point welding, and the pump body assembly is connected to the housing by three-point welding. These two connections are rigid connections, resulting in a relatively large vibration of the rotary compressor. For some customers with high requirements for vibration, the rotary compressor with large vibration after work still cannot meet their requirements, so further improvement is needed. Summary of the Utility Model

[0003] In view of the above technical problems in the related art, the utility model provides a housing structure for a rotary compressor, which can solve the above problems.

[0004] To achieve the above technical purpose, the technical solution of the utility model is realized as follows:

[0005] A housing structure for a rotary compressor includes an outer housing. The upper and lower ends of the outer housing are respectively welded with an upper cover and a lower cover. The bottom end of the lower cover is welded with a lower base. A cylindrical inner housing is arranged in the middle of the inner cavity of the outer housing. The upper end of the inner housing is connected to the outer housing through a compression spring assembly. One end of the side surface of the outer housing protrudes outward to form a protruding part. A plurality of arc-shaped mounting parts are arranged at the upper opening end of the outer housing. The compression spring assembly is located in the mounting parts. The compression spring assembly includes a bracket welded to the inner housing, an upper support pin welded to the bracket, and a lower support pin welded to the bottom surface of the mounting part. An upper support block and a lower support block are respectively sleeved on the upper support pin and the lower support pin. A compression spring is sleeved on the upper support block and the lower support block.

[0006] Further, a limiting ear for covering the compression spring assembly is arranged on the side surface of the upper cover, and there is a space gap one between the limiting ear and the bracket.

[0007] Further, the lower base is of a triangular structure, and a connection hole is arranged at each of the three corners of the lower base.

[0008] Further, a junction box body is connected to the middle part of the outer side wall of the protruding part through a bolt assembly, and an inlet hole is arranged at the bottom of the junction box body.

[0009] Further, a first pipe hole for inserting an air suction pipe and a second pipe hole for inserting an exhaust pipe are formed in the outer housing body. The first pipe hole and the second pipe hole are oppositely arranged, and the first pipe hole is located on the protruding portion.

[0010] Further, three spot welding holes are evenly arranged at the bottom end of the inner housing body.

[0011] Further, the number of the compression spring assemblies is three, and the included angle between two adjacent compression spring assemblies is 120°.

[0012] Further, the upper support pin and the lower support pin have the same structure, and the upper support pin and the lower support pin are concentrically arranged.

[0013] Further, the upper support block and the lower support block have the same structure. The upper support block includes a cylindrical insertion portion for inserting the upper support pin. An annular limiting portion for abutting against the compression spring is arranged at the bottom end of the insertion portion. The insertion portion is provided with an installation cavity adapted to the upper support pin, and there is a second space gap between the upper support block and the lower support block.

[0014] The beneficial effects of the present utility model: In this application, the inner housing body is connected to the outer housing body through the compression spring assembly. By utilizing the flexible connection characteristic of the compression spring, the axial vibration of the compressor can be effectively reduced, thereby reducing the overall machine noise and vibration of the compressor. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] The following further elaborates on the present utility model based on the drawings.

[0017] Figure 1 is a schematic diagram of a housing structure for a rotary compressor according to an embodiment of the present utility model;

[0018] Figure 2 is a schematic diagram of a housing structure for a rotary compressor according to an embodiment of the present utility model after removing the upper cover;

[0019] Figure 3 is a schematic diagram of the upper cover according to an embodiment of the present utility model;

[0020] Figure 4 is a schematic diagram of the compression spring assembly according to an embodiment of the present utility model.

[0021] In the figure:

[0022] 100, outer housing; 101, first pipe hole; 102, second pipe hole; 110, protruding part; 120, mounting part; 200, upper cover; 210, limiting ear; 300, lower base; 310, connection hole; 400, inner housing; 410, spot welding hole; 500, compression spring assembly; 510, bracket; 520, upper support pin; 530, lower support pin; 540, upper support block; 550, lower support block; 560, compression spring; 600, junction box body; 610, inlet hole; 700, lower cover. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0024] As Figures 1-4 shown, according to the present invention, a housing structure for a rotary compressor is disclosed, including an outer housing 100. The upper and lower ends of the outer housing 100 are respectively welded with an upper cover 200 and a lower cover 700. The bottom end of the lower cover 700 is welded with a lower base 300. A cylindrical inner housing 400 is provided in the middle of the inner cavity of the outer housing 100. The upper end of the inner housing 400 is connected to the outer housing 100 through a compression spring assembly 500. One end of the side of the outer housing 100 protrudes outward as a protruding part 110. The upper opening end of the outer housing 100 is provided with a plurality of arc-shaped mounting parts 120. The compression spring assembly 500 is located in the mounting parts 120. The compression spring assembly 500 includes a bracket 510 welded to the inner housing 400, an upper support pin 520 welded to the bracket 510, and a lower support pin 530 welded to the bottom surface of the mounting part 120. An upper support block 540 and a lower support block 550 are respectively sleeved on the upper support pin 520 and the lower support pin 530. A compression spring 560 is sleeved on the upper support block 540 and the lower support block 550.

[0025] Embodiment 1:

[0026] The inner housing 400 in the present application is used to connect the stator assembly and the pump body assembly. Three spot welding holes 410 are evenly provided at the bottom end of the inner housing 400. The pump body assembly can be connected to the inner housing 400 through the three-point welding process, and the stator assembly can be installed in the inner cavity of the inner housing 400 by the hot sleeve process. The upper end of the inner housing 400 is connected to the outer housing 100 through three compression spring assemblies 500. When the components in the inner housing 400 work and generate vibrations, the flexible connection characteristics of the compression spring 560 can effectively reduce the axial vibration of the compressor, thereby reducing the overall machine noise and vibration of the compressor. The limiting ears 210 of the upper cover 200 have a limiting effect on the bracket 510, which can prevent the spring from being dragged during the transportation of the compressor, resulting in the failure of vibration reduction. (When the compressor is not working, there is a certain gap between the limiting ears 210 and the bracket 510, and there is also a certain gap between the upper support block 540 and the lower support block 550, so that the inner housing 400 has a certain space for axial vibration.)

[0027] In the present application, one end of the side of the outer housing 100 protrudes outward to form a protruding portion 110. The inner space of the protruding portion 110 is used for the installation of electronic control components and the arrangement of the suction pipe. A junction box body 600 is connected to the outside of the protruding portion 110 through a bolt assembly, and a terminal post is installed in the junction box body 600. Then, the outer housing 100 is designed to be irregular, which can reduce the space volume of the outer housing 100, reduce heat loss, and at the same time reduce the weight of the housing. At the same time, side plug-in terminal posts are used on the outer housing 100, which can reduce the height above the upper cover, making the installation of the rotary compressor and the placement of pipelines simple and convenient, with higher space utilization rate, which is beneficial to the space setting of refrigeration appliances and improves the volume utilization of refrigeration appliances.

[0028] The base 300 is welded to the bottom end of the lower cover 700. The lower base 300 is of a triangular structure, and a connection hole 310 is provided at each of the three corners of the lower base 300. The compressor is connected to the external machines such as air conditioners, dehumidifiers, and clothes dryers through the connection holes 310.

[0029] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A housing structure for a rotary compressor, comprising an outer housing (100), wherein an upper cover (200) and a lower cover (700) are respectively welded to the upper and lower ends of the outer housing (100), and a lower base (300) is welded to the bottom end of the lower cover (700), characterized in that: A cylindrical inner shell (400) is provided in the middle of the inner cavity of the outer shell (100); the upper end of the inner shell (400) is connected to the outer shell (100) via a compression spring assembly (500); one end of the side surface of the outer shell (100) protrudes outward to form a protruding portion (110); a plurality of arc-shaped mounting portions (120) are provided at the upper open end of the outer shell (100); the compression spring assembly (500) is located in the mounting portion (120); and the compression spring assembly (500) is disposed in the mounting portion (120). 0) comprises a bracket (510) welded to the inner shell (400), an upper support pin (520) welded to the bracket (510), and a lower support pin (530) welded to the bottom surface of the mounting portion (120), wherein an upper support block (540) and a lower support block (550) are sleeved on the upper support pin (520) and the lower support pin (530), respectively, and a compression spring (560) is sleeved on the upper support block (540) and the lower support block (550).

2. A housing structure for a rotary compressor according to claim 1, characterized in that: A limiting ear (210) for sealing the compression spring assembly (500) is provided on the side of the upper cover (200), and a space gap exists between the limiting ear (210) and the bracket (510).

3. A housing structure for a rotary compressor according to claim 1, characterized in that: The lower base (300) is a triangular structure, and three corners of the lower base (300) are respectively provided with a connection hole (310).

4. A housing structure for a rotary compressor according to claim 1, characterized in that: The middle part of the outer side wall of the protruding portion (110) is connected to a junction box body (600) via a bolt assembly, and a wire entry hole (610) is provided at the bottom of the junction box body (600).

5. The housing structure for a rotary compressor according to claim 1, characterized in that: The outer shell (100) is provided with a first pipe hole (101) for plugging in an air intake pipe and a second pipe hole (102) for plugging in an air exhaust pipe, the first pipe hole (101) and the second pipe hole (102) being arranged opposite to each other, wherein the first pipe hole (101) is located on the protruding portion (110).

6. The housing structure for a rotary compressor according to claim 1, characterized in that: Three spot welding holes (410) are evenly arranged at the bottom end of the inner shell (400).

7. The housing structure for a rotary compressor according to claim 1, characterized in that: The number of the compression spring assemblies (500) is three, and the angle between two adjacent compression spring assemblies (500) is 120°.

8. The housing structure for a rotary compressor according to claim 1, characterized in that: The upper support pin (520) and the lower support pin (530) have the same structure, and the upper support pin (520) and the lower support pin (530) are concentrically arranged.

9. The housing structure for a rotary compressor according to claim 1, characterized in that: The upper support block (540) and the lower support block (550) have the same structure, wherein the upper support block (540) comprises a cylindrical plug-in portion for plugging into the upper support pin (520), the bottom end of the plug-in portion is provided with an annular limiting portion for abutting against the compression spring (560), the plug-in portion is provided with a mounting cavity adapted to the upper support pin (520), and there is a space gap between the upper support block (540) and the lower support block (550).

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