Balanced air compressor and using method thereof

Abstract

The invention discloses a balanced air compressor and a using method thereof, and relates to the technical field of air compressor equipment, the balanced air compressor comprises a driving motor, a driving rotating shaft, a first air compressor and a second air compressor, the first air compressor and the second air compressor are located at the two ends of the driving rotating shaft, and the driving motor is arranged in the middle of the driving rotating shaft and is in transmission connection with the driving rotating shaft; the two ends of the driving rotating shaft are in transmission connection to the first gas compressor and the second gas compressor; the air compressor further comprises two first air bearings and two second air bearings, and the first air bearing and the second air bearing are arranged between the driving motor and the first air compressor. A first air bearing and a second air bearing are arranged between the driving motor and the second air compressor, the first air bearing is a thrust bearing, and according to the scheme, the structure is simple, the situation that compressed air is polluted by grease and metal chippings is prevented, and the overall structure is compact.

Description

Technical Field

[0001] The invention relates to the technical field of air compressor equipment, in particular to a balanced air compressor and a method for using the air compressor. Background Art

[0002] An air compressor is a device used to compress gas. The structure of an air compressor is similar to that of a water pump. Most air compressors are reciprocating piston type, with rotating blades or rotating screws. Existing air compressors usually use contact bearings, which often limit the speed of the air compressor rotor and affect the life of the air compressor due to direct friction and wear. The bearing lubricant is also prone to leakage and contaminate the compressed air. Therefore, a new air compressor is needed to reduce the risk of contaminating the compressed air. Summary of the invention

[0003] The purpose of the present invention is to provide a balanced air compressor and a method for using the same in view of the deficiencies in the prior art.

[0004] A balanced air compressor comprises a drive motor, a drive shaft and a first compressor and a second compressor located at two ends of the drive shaft, wherein the drive motor is arranged in the middle of the drive shaft, the drive motor is connected to the drive shaft by transmission, and two ends of the drive shaft are connected to the first compressor and the second compressor by transmission;

[0005] It also includes a first air bearing and a second air bearing, wherein two of the first air bearing and the second air bearing are provided, a first air bearing and a second air bearing are provided between the drive motor and the first compressor, and a first air bearing and a second air bearing are provided between the drive motor and the second compressor, and the first air bearing is a thrust bearing.

[0006] Furthermore, it also includes a storage gas tank, and the gas outlet ends of the first compressor and the second compressor are connected to the storage gas tank.

[0007] Furthermore, the first air bearing is an axial air bearing.

[0008] Furthermore, the second air bearing is a radial air bearing.

[0009] Furthermore, the first compressor and the second compressor have the same structure.

[0010] Furthermore, the first compressor and the second compressor are symmetrically arranged on both sides of the driving bearing.

[0011] Furthermore, the two first air bearings respectively use the blade backs of the first compressor and the second compressor as bearing thrust surfaces.

[0012] Furthermore, it also includes an intermediate gas tank, the first compressor and the second compressor are connected to the intermediate gas tank, and the output end of the intermediate gas tank is connected to the first air bearing and the second air bearing.

[0013] A method for using an air compressor comprises the following steps:

[0014] S1: starting the driving motor, driving the driving shaft to operate through the driving motor, and the driving shaft synchronously drives the first compressor and the second compressor on both sides to operate;

[0015] S2: External air enters through the air inlet ends of the first compressor and the second compressor, and the air is compressed by the first compressor and the second compressor;

[0016] S3: a portion of the compressed air compressed by the first compressor and the second compressor is delivered to the storage gas tank, and another portion of the compressed air is delivered to the intermediate gas tank;

[0017] S4: The compressed gas entering the intermediate gas tank is transported to the first air bearing and the second air bearing.

[0018] The advantages of the present invention compared with the prior art are:

[0019] First, the air bearing is used in this solution. Since there is no lubricating oil, the risk of grease contaminating the compressed air is reduced. In addition, the air bearing is non-contact, which reduces the risk of friction debris from metal parts contaminating the compressed air.

[0020] Second: In this solution, a drive motor is used to drive the first compressor and the second compressor on both sides at the same time, so as to ensure the assembly stability of the equipment. This makes it easy to balance the axial force of the rotor system. The central setting of the drive motor shortens the axial dimension and makes the overall structure compact.

[0021] Thirdly, an intermediate gas tank is provided in the present scheme, and part of the air compressed by the first compressor and the second compressor is stored in the intermediate gas tank. The intermediate gas tank can be connected with the first air bearing and the second air bearing and provide bearing gas therefor.

[0022] Fourthly, the first compressor and the second compressor in this solution have the same structure, and the first compressor and the second compressor are symmetrically arranged on both sides of the driving shaft, so as to further balance the axial force of the rotor system.

[0023] Fourthly, the first air bearing in this solution uses the blade backs of the first compressor and the second compressor as bearing thrust surfaces, which can further shorten the axial dimension and make the overall structure compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The overall structure of this scheme is shown in Figure 2. Figure 1;

[0025] Figure 2 The internal structure of this scheme is shown in Figure 1. Figure 1 ;

[0026] Figure 3 The overall structure of this scheme is shown in Figure 2. Figure 2 ;

[0027] Figure 4 The internal structure of this scheme is shown in Figure 1. Figure 2 .

[0028] Figure numerals: drive motor 1 , drive shaft 2 , first compressor 3 , second compressor 4 , first air bearing 5 , second air bearing 6 , intermediate air tank 7 . DETAILED DESCRIPTION

[0029] Combined with Figure 1-4 As shown, a balanced air compressor includes a storage gas tank, a drive motor 1, a drive shaft 2, and a first compressor 3 and a second compressor 4 located at both ends of the drive shaft 2, wherein the drive motor 1 is arranged in the middle of the drive shaft 2, and the drive motor 1 is transmission-connected to the drive shaft 2, and both ends of the drive shaft 2 are transmission-connected to the first compressor 3 and the second compressor 4, and the air outlet ends of the first compressor 3 and the second compressor 4 are connected to the storage gas tank, and the first compressor 3 and the second compressor 4 on both sides are driven to operate by one drive motor 1 at the same time, so that the assembly stability of the equipment can be ensured, and the axial force of the rotor system can be easily balanced. The drive motor 1 is centrally arranged to shorten the axial dimension and make the overall structure compact, and external air is sucked in and compressed by the first compressor 3 and the second compressor 4, and the compressed air is stored in the storage gas tank for use by gas-using equipment.

[0030] Preferably, it also includes a first air bearing 5 and a second air bearing 6, wherein the first air bearing 5 is an axial air bearing, and the second air bearing 6 is a radial air bearing. Two of the first air bearing 5 and the second air bearing 6 are provided, and a first air bearing 5 and a second air bearing 6 are provided between the drive motor 1 and the first compressor 3, and a first air bearing 5 and a second air bearing 6 are provided between the drive motor 1 and the second compressor 4. The first air bearing 5 is a thrust bearing. Air bearings are used in this solution. Since there is no lubricating oil, the risk of grease contaminating the compressed air is reduced, and the air bearings are non-contact, which reduces the risk of metal friction debris contaminating the compressed air.

[0031] Preferably, the first compressor 3 and the second compressor 4 have the same structure, and the first compressor 3 and the second compressor 4 are symmetrically arranged on both sides of the driving shaft 2, so as to further balance the axial force of the rotor system.

[0032] Preferably, the two first air bearings 5 ​​use the blade backs of the first compressor 3 and the second compressor 4 as bearing thrust surfaces, respectively, which can further shorten the axial dimension and make the overall structure compact.

[0033] Preferably, it also includes an intermediate gas tank 7, the first compressor 3 and the second compressor 4 are connected to the intermediate gas tank 7, the output end of the intermediate gas tank 7 is connected to the first air bearing 5 and the second air bearing 6, a part of the air compressed by the first compressor 3 and the second compressor 4 is stored in the intermediate gas tank 7, and the intermediate gas tank 7 can be connected to the first air bearing 5 and the second air bearing 6 and provide bearing gas therefor.

[0034] A method for using an air compressor comprises the following steps:

[0035] S1: starting the driving motor 1, driving the driving shaft 2 to operate through the driving motor 1, and the driving shaft 2 synchronously drives the first compressor 3 and the second compressor 4 on both sides to operate;

[0036] S2: External air enters through the air inlet of the first compressor 3 and the second compressor 4, and the air is compressed by the first compressor 3 and the second compressor 4 (such as Figure 2 and Figure 4 (indicated by arrows A1 and A2);

[0037] S3: A portion of the compressed air compressed by the first compressor 3 and the second compressor 4 is delivered to the storage tank (eg Figure 2 and Figure 4 The other part of the compressed air is delivered to the intermediate gas tank 7 (as shown by the arrows B1 and B2). Figure 2 and Figure 4 (indicated by arrows B3 and B4);

[0038] S4: The compressed gas entering the intermediate gas tank 7 is transported to the first air bearing 5 and the second air bearing 6 .

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0042] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A balanced air compressor, characterized in that: It comprises a driving motor, a driving shaft and a first compressor and a second compressor located at two ends of the driving shaft, wherein the driving motor is arranged in the middle of the driving shaft, the driving motor is connected to the driving shaft by transmission, and two ends of the driving shaft are connected to the first compressor and the second compressor by transmission; It also includes a first air bearing and a second air bearing, wherein two of the first air bearing and the second air bearing are provided, a first air bearing and a second air bearing are provided between the drive motor and the first compressor, and a first air bearing and a second air bearing are provided between the drive motor and the second compressor, and the first air bearing is a thrust bearing.

2. A balanced air compressor according to claim 1, characterized in that: It also includes a gas storage tank, and the gas outlet ends of the first compressor and the second compressor are connected to the gas storage tank.

3. A balanced air compressor according to claim 1, characterized in that: The first air bearing is an axial air bearing.

4. A balanced air compressor according to claim 1, characterized in that: The second air bearing is a radial air bearing.

5. A balanced air compressor according to claim 1, characterized in that: The first compressor and the second compressor have the same structure.

6. A balanced air compressor according to claim 5, characterized in that: The first compressor and the second compressor are symmetrically arranged on both sides of the driving bearing.

7. A balanced air compressor according to claim 1, characterized in that: The two first air bearings respectively use the blade backs of the first compressor and the second compressor as bearing thrust surfaces.

8. A balanced air compressor according to claim 1, characterized in that: It also includes an intermediate gas tank, the first compressor and the second compressor are connected to the intermediate gas tank, and the output end of the intermediate gas tank is connected to the first air bearing and the second air bearing.

9. The method for using the air compressor according to any one of claims 1 to 8, comprising the following steps: S1: starting the driving motor, driving the driving shaft to operate through the driving motor, and the driving shaft synchronously drives the first compressor and the second compressor on both sides to operate; S2: External air enters through the air inlet ends of the first compressor and the second compressor, and the air is compressed by the first compressor and the second compressor; S3: a portion of the compressed air compressed by the first compressor and the second compressor is delivered to the storage gas tank, and another portion of the compressed air is delivered to the intermediate gas tank; S4: The compressed gas entering the intermediate gas tank is transported to the first air bearing and the second air bearing.

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