Two-stage air compressor

Abstract

The utility model discloses a two-stage air compressor, which relates to the field of air compressors and comprises an air compressor body, a water cooling piece and a first cooling piece, a shell of the air compressor body is made of aluminum profiles, the water cooling piece comprises a first cooling channel, flowing cooling water is filled in the first cooling channel, and the first cooling channel is arranged on the shell; an air cavity of the second-stage air compressor is formed in the shell, and the first cooling piece is used for cooling air flow in the air cavity; the shell of the air compressor body is made of the aluminum profile, and the first cooling channel and the air cavity are formed in the shell, so that the overall structure of the air compressor is simplified, and the production cost is reduced; by means of the first cooling piece, the temperature of airflow in the air cavity is reduced, and the efficiency of the air compressor is improved.

Description

Technical Field

[0001] The utility model relates to the field of air compressors, in particular to a two-stage air compressor. Background Art

[0002] Electric air compressors are used to increase gas density and utilization. Electromagnetic air compressors are typically driven by a high-speed motor. The stator coils of the motor are fixed to the housing, and the rotor magnets are fixed to the shaft. High-frequency current drives the magnets to rotate in the coil's magnetic field, thereby driving the shaft and the pressure roller attached to it, compressing the gas.

[0003] In order to further increase the gas density, a two-stage boosting method can be used to connect the outlet of the first-stage compressor with the inlet of the second-stage compressor, so that the gas compressed by the first-stage compressor can be further compressed. Figure 1 As shown, in the prior art, two-stage compressors are usually connected by external pipes. This method makes the overall structure of the air compressor complicated, and increases production costs and assembly difficulty. Utility Model Content

[0004] The purpose of this utility model is to design a two-stage air compressor in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A two-stage air compressor includes an air compressor body, a water-cooling element and a first cooling element. The shell of the air compressor body is made of aluminum profiles. The water-cooling element includes a first cooling channel filled with flowing cooling water. The first cooling channel is arranged on the shell; the air cavity of the two-stage air compressor is arranged on the shell, and the first cooling element is used to cool the airflow in the air cavity.

[0007] The beneficial effects of the present invention are as follows: the outer shell of the air compressor body is made of aluminum profile, and the first cooling channel and the air cavity are opened on the outer shell, which simplifies the overall structure of the air compressor and reduces production costs; the first cooling member is used to reduce the temperature of the air flow in the air cavity and improve the efficiency of the air compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural diagram of an air compressor in the prior art;

[0009] Figure 2 This is a structural diagram of a two-stage air compressor of the utility model;

[0010] Figure 3 This is a schematic diagram of the internal structure of a two-stage air compressor of the utility model. Figure 2 ;

[0011] Figure 4 This is a schematic diagram of a housing in a two-stage air compressor of the present invention;

[0012] Figure 5 This is a schematic diagram of the first cooling channel in a two-stage air compressor of the present invention;

[0013] Figure 6 This is a schematic cross-sectional view of the middle portion of the casing of a two-stage air compressor of the present invention;

[0014] Figure 7 This is a schematic cross-sectional view of the first end of a housing in a two-stage air compressor of the present invention;

[0015] Figure 8 This is a schematic cross-sectional view of the second end of the housing of a two-stage air compressor of the present invention;

[0016] The corresponding figures are as follows:

[0017] 1-outer shell, 2-first water chamber, 3-second water chamber, 4-air chamber, 5-connecting channel, 6-inner chamber, 7-first toothed plate, 8-outer pipe. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present invention. It should be understood that the described embodiments are only a portion of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0021] In the description of the present utility model, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present utility model.

[0022] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0023] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0024] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings.

[0025] Figure 2-Figure 8 As shown, a two-stage air compressor includes an air compressor body, a water-cooling part and a first cooling part. The shell 1 of the air compressor body is made of aluminum profile. The water-cooling part includes a first cooling channel, which is filled with flowing cooling water and is arranged on the shell 1; the air cavity 4 of the two-stage air compressor is arranged on the shell 1, and the first cooling part is used to cool the airflow in the air cavity 4. The air cavity 4 and the first cooling channel are both opened on the shell made of aluminum profile, which simplifies the overall structure of the air compressor and reduces the production cost; the air cavity 4 is formed by profile, and the surface roughness is good, which reduces the friction loss of the airflow and reduces the efficiency loss of the air compressor; due to the profile forming method, the size of the air cavity 4 is more stable, and the performance of the air compressor is more stable and reliable; due to the use of profile forming, the wall thickness of the shell 1 of the air compressor body can be greatly reduced, thereby reducing the weight of the shell 1.

[0026] The first cooling channel includes n first water chambers 2 and n-1 connecting channels 5. The first water chambers 2 and the connecting channels 5 are both opened on the shell 1. The central axes of the multiple first water chambers 2 are parallel to the central axis of the air compressor body. The connecting channel 5 is used for communication between the first ends or second ends of two adjacent first water chambers 2, wherein the ends of the two first water chambers 2 away from the connecting channel 5 serve as the water inlet and the water outlet of the first cooling channel respectively. n is a positive integer greater than 2, that is, on the shell 1 of the aluminum profile, multiple first water chambers 2 that are not connected to each other are opened. According to actual needs, the adjacent first water chambers 2 are cross-connected, and the opened channels are used as connecting channels 5 to form first cooling channels connected end to end; the space of the shell 1 is fully utilized, the cooling area of ​​the first water chamber 2 is greatly increased, and the cooling effect of the shell 1 is improved.

[0027] The plurality of first water chambers 2 are arranged in a circular array with the central axis of the rotor of the air compressor as the center.

[0028] The water cooling component also includes a plurality of first toothed plates 7. Several first toothed plates 7 are provided on the profile shell 1. The raised or recessed first toothed plates 7 can increase the surface area of ​​the shell 1, increase the heat dissipation area of ​​the shell 1, and further improve the cooling effect of the shell 1.

[0029] The first cooling member includes a second cooling channel. The second cooling channel is opened on the housing 1 and is located between the first cooling channel and the air cavity 4. The second cooling channel is filled with flowing cooling material.

[0030] The first cooling member also includes a plurality of second toothed plates, which are fixedly mounted on the inner wall of the air cavity 4 close to the second cooling channel. Dense second toothed plates are arranged on the inner side of the air cavity 4 to increase the heat exchange area between the air cavity 4 and the water cavity, reduce the air flow temperature, and improve the efficiency of the air compressor. The second toothed plates are not shown.

[0031] The second cooling channel includes two second water cavities 3, the first ends of the two second water cavities 3 serve as the water inlet and water outlet of the second cooling channel respectively, and the second ends of the two second water cavities 3 are connected to the water inlet and water outlet of the first cooling channel respectively.

[0032] The central axis of the second water chamber 3 is parallel to the central axis of the first water chamber 2 .

[0033] The working principle of the two-stage air compressor of the utility model is as follows:

[0034] The housing 1 is made of customized aluminum profiles, and the cross section of the profile is as follows Figure 6-Figure 8As shown, the cross section of the profile includes an inner cavity 6, and the rotor and other structures of the air compressor are installed in the inner cavity 6. Several first water cavities 2 are evenly arranged on the outside of the inner cavity 6, and the several first water cavities 2 are separated by partition walls and are not connected; after the outer shell 1 profile is formed, at one end face of the profile outer shell 1, a first water cavity 2 is separated at intervals by machining, and the partition wall between two adjacent channels is opened to form a channel. At the other end of the profile outer shell 1, the partition wall between two adjacent first water cavities 2 is opened in the same manner and staggered to form a complete first cooling channel, but one partition wall is retained as an inlet and outlet partition wall, and an air cavity 4 is provided on the outside of the second water cavity 3.

[0035] The external air cavity in the traditional method is integrated into the profile and cooled together with water cooling to improve the working efficiency of the product.

[0036] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. Any technical deformation made according to the technical solution of the present invention falls within the protection scope of the present invention.

Claims

1. A two-stage air compressor, characterized in that: It includes an air compressor body, a water-cooling part and a first cooling part. The shell of the air compressor body is made of aluminum profile. The water-cooling part includes a first cooling channel. The first cooling channel is filled with flowing cooling water and is arranged on the shell. The air cavity of the two-stage air compressor is arranged on the shell, and the first cooling part is used to cool the airflow in the air cavity.

2. A two-stage air compressor according to claim 1, characterized in that: The first cooling channel includes n first water cavities and n-1 connecting channels. The first water cavities and the connecting channels are both opened on the outer shell. The central axes of the multiple first water cavities are parallel to the central axis of the air compressor body. The connecting channel is used for connecting the first ends or second ends of two adjacent first water cavities, wherein the ends of the two first water cavities away from the connecting channel serve as the water inlet and water outlet of the first cooling channel respectively, and n is a positive integer greater than 2.

3. A two-stage air compressor according to claim 1, characterized in that: The plurality of first water chambers are arranged in a circular array with the central axis of the rotor of the air compressor as the center.

4. A two-stage air compressor according to claim 1, characterized in that: The water cooling component further includes a plurality of first tooth-shaped plates, which are arranged on the shell.

5. A two-stage air compressor according to claim 2, characterized in that: The first cooling member includes a second cooling channel, which is opened on the shell and located between the first cooling channel and the air cavity. The second cooling channel is filled with flowing cooling material.

6. A two-stage air compressor according to claim 5, characterized in that: The first cooling member further includes a plurality of second tooth-shaped plates, which are arranged on the inner side wall of the air cavity close to the second cooling channel.

7. The two-stage air compressor according to claim 5, characterized in that: The second cooling channel includes two second water cavities, the first ends of the two second water cavities serve as the water inlet and water outlet of the second cooling channel respectively, and the second ends of the two second water cavities are connected to the water inlet and water outlet of the first cooling channel respectively.

8. A two-stage air compressor according to claim 7, characterized in that: The central axis of the second water chamber is parallel to the central axis of the first water chamber.

Images