CN216111267U

CN216111267U - Compressor module and air compressor

Info

Publication number: CN216111267U
Application number: CN202122618663.8U
Authority: CN
Inventors: 侯野
Original assignee: Ingersoll Rand Technology R & D Shanghai Co ltd
Current assignee: Ingersoll Rand Technology R & D Shanghai Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-03-22
Anticipated expiration: 2031-10-28

Abstract

The application provides a compressor module and an air compressor. The compressor module comprises a primary air compression host, a secondary air compression host, a first lubricating component and a second lubricating component. The primary air compression host comprises a primary compression cavity, a primary rotor and a first accommodating cavity primary rotor, wherein the primary compression cavity is arranged in a sealed mode, the first accommodating cavity primary rotor is arranged in the primary compression cavity in a rotating mode, and the first accommodating cavity primary rotor is arranged in a spaced mode with the primary compression cavity and comprises a first power input end extending out of the primary compression cavity. The second grade air compression host computer holds the chamber including sealed second grade compression chamber that sets up, the second that sets up in the second grade rotor of second grade compression chamber and separate the setting with the second grade compression chamber, and second grade compression chamber and one-level compression chamber intercommunication, second grade rotor are including stretching out the second power input end in second grade compression chamber. The first lubrication assembly includes a first oil tank in communication with the first receiving chamber. The second lubrication assembly includes a second oil tank in communication with the second receiving chamber. Therefore, the compressor module integrally achieves the optimal performance, reduces energy consumption and saves energy.

Description

Compressor module and air compressor

Technical Field

The application relates to the technical field of air compression, in particular to a compressor module and an air compressor.

Background

An air compressor is a device for compressing gas. The air compressor is used for providing air source power, is a core device of a pneumatic system and a main body in an electromechanical bleed air source device, and is a device for converting motion mechanical energy into gas pressure energy.

The air compressor of the related art may be a two-stage oil-free air compressor. The two-stage oil-free air compressor comprises two air compression main machines. The rotational speed ratio between the two air compression main machines is fixed. If one of the air compression main machines achieves the lowest energy consumption, the other air compression main machine consumes more energy, so that the total energy consumption is larger.

SUMMERY OF THE UTILITY MODEL

The application provides a compressor module, includes:

the primary air compression main machine comprises a primary compression cavity, a primary rotor and a first accommodating cavity, wherein the primary compression cavity is arranged in a sealing mode, the primary rotor is arranged in the primary compression cavity in a rotating mode, the first accommodating cavity is arranged in a separated mode from the primary compression cavity, the first accommodating cavity is used for accommodating a first component to be lubricated, the first component to be lubricated is connected with the primary rotor, and the primary rotor comprises a first power input end extending out of the primary compression cavity;

the secondary air compression main machine comprises a secondary compression cavity, a secondary rotor and a second accommodating cavity, wherein the secondary compression cavity is arranged in a sealing mode, the secondary rotor is rotatably arranged in the secondary compression cavity, the second accommodating cavity is separated from the secondary compression cavity and is communicated with the primary compression cavity, the second accommodating cavity is used for accommodating a second component to be lubricated, the second component to be lubricated is connected with the secondary rotor, and the secondary rotor comprises a second power input end extending out of the secondary compression cavity;

a first lubrication assembly including a first oil tank communicating with the first accommodation chamber;

and the second lubricating component comprises a second oil tank, and the second oil tank is communicated with the second accommodating cavity.

Optionally, the primary air compressor main unit and the secondary air compressor main unit are arranged side by side at intervals and are parallel and level in height.

And/or the presence of a gas in the gas,

the air compression ratio of the primary air compression host is larger than that of the secondary air compression host.

Optionally, the compressor module comprises:

the first speed increaser comprises a first box body and a first speed increasing assembly arranged in the first box body;

the second speed increaser comprises a second box body and a second speed increasing assembly arranged in the second box body;

the first box body and the second box body are arranged side by side and are parallel and level in height, the primary air compression main machine is connected to the first box body, and the primary rotor is in transmission connection with the first speed increasing assembly; the secondary air compression main engine is connected to the second box body, and the secondary rotor is in transmission connection with the second speed increasing assembly.

Optionally, the first speed increaser and the first lubricating assembly are arranged up and down, the first lubricating assembly is assembled at the bottom of the first speed increaser, the primary air compression main unit is assembled at the top of the first speed increaser, and a first accommodating space is arranged below the primary air compression main unit;

the second speed increaser and the second lubricating assembly are arranged up and down, the second lubricating oil tank is assembled at the bottom of the second speed increaser, the secondary air compression main machine is assembled at the top of the second speed increaser, and a second accommodating space is arranged below the secondary air compression main machine;

and/or the presence of a gas in the gas,

the first speed increasing assembly and the second speed increasing assembly are both gear transmission assemblies, and the transmission ratio is smaller than 1.

Optionally, the first lubricating assembly includes a first oil pipeline extending in the first box body and communicating the first oil tank and the first accommodating cavity;

the second lubricating assembly comprises a second oil conveying pipeline, the second oil conveying pipeline extends in the second box body and is communicated with the second oil tank and the second containing cavity.

The present application provides an air compressor, comprising:

a compressor module as described above;

the first motor is in transmission connection with the first power input end;

and the second motor is in transmission connection with the second power input end.

Optionally, the air compressor further comprises:

the first frequency converter comprises a first control end connected with the first motor, and the first frequency converter controls the first motor to rotate at a first rotating speed through a first electric signal received by the first control end;

and the second frequency converter comprises a second control end connected with the second motor, and the second frequency converter controls the second input shaft to rotate at a second rotating speed through a second electric signal received by the second control end.

Optionally, the air compressor includes a first speed increaser and a second speed increaser which are arranged side by side, the first motor and the primary compression main unit are arranged on two opposite sides of the first speed increaser, the second motor and the secondary compression main unit are arranged on two opposite sides of the second speed increaser, and the first motor and the second motor are arranged side by side on the same side.

Optionally, the first motor and the second motor are three-phase asynchronous variable frequency motors respectively.

Optionally, the air compressor further comprises:

the primary cooler is positioned below the primary air compression main machine;

the secondary cooler is positioned below the secondary air compression main machine;

the primary air compression main machine comprises a primary air outlet communicated with the primary compression cavity;

the first gas pipe is connected with the primary cooler and the primary gas outlet;

the secondary air compression main machine comprises a secondary air outlet communicated with the secondary compression cavity, and the secondary cooler is connected with the secondary air outlet;

and the second gas pipe is connected with the secondary cooler and the secondary gas outlet.

The utility model provides a compressor module and air compressor, including one-level air compression host computer and second grade air compression host computer, first lubricated subassembly and second lubricated subassembly, so first power input end and second power input end independent setting, independently driven, one-level air compression host computer and second grade air compression host computer autonomous working, reduce the structural coupling between one-level air compression host computer and the second grade air compression host computer, realize independent variable speed, can reach the optimum rotational speed of one-level air compression host computer and the optimum rotational speed of second grade air compression host computer, and then make the compressor module wholly reach optimum performance, reduce the power consumption, energy saving.

Drawings

FIG. 1 is a perspective view of an air compressor according to an embodiment of the present application;

FIG. 2 is a perspective view of an angle of a compressor module of the air compressor shown in FIG. 1;

FIG. 3 is a perspective view of another angle of the compressor module shown in FIG. 2;

FIG. 4 is a cross-sectional view taken at A-A of the compressor module shown in FIG. 2;

FIG. 5 is a cross-sectional view taken at B-B of the compressor module shown in FIG. 2;

FIG. 6 is a schematic perspective view of another angle of the air compressor shown in FIG. 1;

FIG. 7 is a schematic diagram illustrating a first inverter of the air compressor shown in FIG. 6;

FIG. 8 is a schematic structural view of an air compressor including a primary cooler, a secondary cooler, a first air delivery pipe, and a second air delivery pipe according to the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

FIG. 1 is a perspective view of an air compressor 10 according to an embodiment of the present application. The air compressor 10 (may also be referred to as an air compressor) may compress air at atmospheric pressure and/or compressed air. The air compressor 10 includes a compressor module 11 and an electric motor 15. The motor 15 is connected to the compressor module 11 and provides a driving force to the compressor module 11 to operate the compressor module 11. The compressor module 11 can be a core component of the air compressor 10, and is mainly used for compressing gas. The compressor module 11 includes an air compressor main 12, a lubrication assembly 13, and a speed increaser 14. The air compressor main unit 12 is connected to a speed increaser 14 and a lubricating unit 13. The air compressor main unit 12 is a core component of the compressor module 11, and mainly introduces a gas to be compressed, and compresses and discharges the gas to be compressed. The speed increaser 14 may input power to the air compression main machine 12. The lubricating component 13 contains oil, which mainly provides lubricating oil for the air compressor main unit 12 in operation, so as to play a lubricating role, and meanwhile, the lubricating oil drives part of heat of the air compressor main unit 12.

The air compressor may be a two-stage air compressor. The two-stage air compressor in the related art may be an oil-free air compressor. The two-stage air compressor comprises two air compression main machines, and the rotating speed ratio between the two air compression main machines is fixed. And the air compression host computer in operation can make the internal temperature of compression chamber rise, and the discharge pressure changes, influences predetermined air compression ratio. For example, when the exhaust pressure is reached, the two air compression main machines operate at 100RPM and 10000RPM respectively, and the two air compression main machines are decelerated at 10800RPM and 9000RPM under the fixed rotation speed ratio. Actual tests show that 10000RPM and 9000RPM match and perform best due to the temperature effect on exhaust pressure. And 10800RPM is greater than 10000RPM for practical testing, and the rotating speed is too high. The exhaust pressure of the air compression main machine rises, the exhaust pressure of the other air compression main machine falls, so that the power consumption of the other air compression main machine is increased, and after the two air compression main machines are matched, the total power consumption is increased.

FIG. 2 is a perspective view of an angle of the compressor module 11 of the air compressor 10 shown in FIG. 1. Fig. 3 is a perspective view of another angle of the compressor module 11 shown in fig. 2. Fig. 4 shows a cross-sectional view at a-a in the compressor module 11 shown in fig. 2.

As shown in fig. 2, 3 and 4, the compressor module 11 includes a primary air compression main unit 121, a secondary air compression main unit 122, a first lubrication assembly 131 and a second lubrication assembly 132. The primary air compressor 121 can realize primary compression, the secondary air compressor 122 can realize primary compression, and the required working pressure can be reached after the air is sucked and is boosted for a plurality of times. The first lubrication assembly 131 and the second lubrication assembly 132 are independently disposed, and the first lubrication assembly 131 lubricates the working primary air compressor 121. The second lubrication assembly 132 lubricates the working secondary air compressor 122.

As shown in fig. 4, the primary air compressor 121 includes a primary compression chamber 31 disposed in a sealed manner, a primary rotor 32 rotatably disposed in the primary compression chamber 31, and a first receiving chamber 34 spaced apart from the primary compression chamber 31. The rotation of the primary rotor 32 can change the volume in the primary compression chamber 31 to compress the air, so that the primary air compression main unit 121 reaches the required compression ratio. The first accommodating cavity 34 is used for accommodating a first component to be lubricated 35 connected with the first-stage rotor 32, and the first component to be lubricated 35 can provide power for the first-stage rotor 32, and is lubricated by lubricating oil during the operation of the first component to be lubricated 35, so that the heat generated during the operation is reduced, and the wear of the first component to be lubricated 35 is reduced. The primary rotor 32 includes a first power input terminal 351 extended from the primary compression chamber 31, and the first power input terminal 351 is used to connect with the first motor 151 (shown in fig. 1) and transmit power to the primary rotor 32, thereby rotationally operating the primary rotor 32.

The secondary air compression main unit 122 includes a secondary compression chamber 41 hermetically disposed, a secondary rotor 42 rotatably disposed in the secondary compression chamber 41, and a second accommodating chamber 44 spaced apart from the secondary compression chamber 41. The secondary compression cavity 41 is communicated with the primary compression cavity 31, compressed gas in the primary compression cavity 31 can be transmitted to the secondary compression cavity 41, and then the compressed gas is compressed again by the secondary air compression main unit 122, so that the secondary air compression main unit 122 achieves a required compression ratio. The second accommodating cavity 44 is used for accommodating a second component to be lubricated connected with the secondary rotor 42, and the second component 45 to be lubricated can provide power for the secondary rotor 42 and be lubricated by lubricating oil in the working process of the second component 45 to be lubricated, so that the heat generated by the working process and the wear of the second component 45 to be lubricated are reduced. Secondary rotor 42 includes a second power input 451 extending from secondary compression cavity 41, second power input 451 being adapted to be coupled to second motor 152 (shown in fig. 1) and to transmit power to secondary rotor 42 to thereby cause secondary rotor 42 to operate rotationally. The second component to be lubricated 45 has the same structure as the first component to be lubricated 35, and is not described herein again.

Continuing with fig. 2 and 3, the first lubrication assembly 131 includes a first oil tank 36, the first oil tank 36 communicating with the first accommodation chamber 34. The first oil tank 36 may contain lubricating oil, and the first oil tank 36 may supply the lubricating oil to the first containing chamber 34 to lubricate the first component to be lubricated 35 in the first containing chamber 34, and may remove heat of the first component to be lubricated 35 through the lubricating oil.

Second lubrication assembly 132 includes second oil tank 46, and second oil tank 46 communicates with second accommodation chamber 44. The second oil tank 46 may contain lubricating oil, and the second oil tank 46 may supply the lubricating oil to the second containing chamber 44 to lubricate the second component to be lubricated 45 in the second containing chamber 44, and may remove heat of the second component to be lubricated 45 through the lubricating oil.

In this embodiment, the first power input end 351 and the second power input end 451 are independently arranged and independently driven, the primary air compression host 121 and the secondary air compression host 122 independently work, the structural coupling between the primary air compression host 121 and the secondary air compression host 122 is reduced, independent speed change is realized, the optimal rotating speed of the primary air compression host 121 and the optimal rotating speed of the secondary air compression host 122 can be achieved, and further the compressor module 11 integrally achieves optimal performance, reduces energy consumption, and saves energy. Moreover, the first lubricating component 131 and the second lubricating component 132 are independently arranged, and independently and respectively supply oil to the primary air compressor main unit 121 and the secondary air compressor main unit 122, and independently and respectively cool the first accommodating cavity 34 and the second accommodating cavity 44, so that heat transfer from the first accommodating cavity 34 to the primary compression cavity 31 and heat transfer from the second accommodating cavity 44 to the secondary compression cavity 41 are reduced, and thus, not only is the heat transfer from the first accommodating cavity 34 to the primary compression cavity 31 and the temperature influence from the second accommodating cavity 44 to the secondary compression cavity 41 reduced, and thus, the accuracy of the compression ratio of the primary air compressor main unit 121 and the secondary air compressor main unit 122 is improved, but also the service lives of the first component 35 to be lubricated and the second component 45 to be lubricated are prolonged.

In some embodiments, the primary air compression host 121 and the secondary air compression host 122, and the primary air compression host 121 and the secondary air compression host 122 may be two air compression hosts and more than two air compression hosts, respectively, and can realize multi-stage compression, so as to meet the requirement of higher working pressure of gas and save energy. Of course, the air compressor 10 is not limited to only two-stage compression, and may be more than two-stage compression, and may be determined according to actual requirements. Wherein, these more than two air compressor mainframes do not include two air compressor mainframes.

As shown in fig. 4, in some embodiments, the first component to be lubricated 35 may include a transmission member 48 and an output shaft (not shown) of the first electric machine 151, and the transmission member 48 is connected to the output shaft of the first electric machine 151 and the primary rotor 32, respectively. The second component to be lubricated 45 may include a transmission member 48 and an output shaft of the second motor 152, and the transmission member 48 is in transmission connection with the output shaft of the second motor 152 and the secondary rotor 42, respectively. Wherein the transmission member 48 is a member such as a bearing. So configured, the primary rotor 32 can be connected to the transmission member 48 and then connected to the output shaft of the first motor 151 through the transmission member 48, and the secondary rotor 42 can be connected to the transmission member 48 and then connected to the output shaft of the second motor 152 through the transmission member 48, thereby improving the accuracy of the transmission. In other embodiments, the first component to be lubricated 35 may be an output shaft of the first electric motor 151, and the second component to be lubricated 45 may be an output shaft of the second electric motor 152. In this way, the primary rotor 32 can be directly connected with the first motor 151 in a transmission manner and powered by the first motor 151, and the secondary rotor 42 can be directly connected with the second motor 152 and powered by the second motor 152, so that the arrangement of components is reduced and the space is saved.

As shown in fig. 2, the primary air compressor 121 and the secondary air compressor 122 are spaced apart from each other and have a same height a. So set up one-level air compression host computer 121 and second grade air compression host computer 122 side by side, convenient overall arrangement, compact structure practices thrift the space, and simultaneously, has the interval between one-level air compression host computer 121 and the second grade air compression host computer 122, by independent drive, mutually noninterfere improves the security of operation.

In some embodiments, the air compression ratio of the primary air compression host 121 is greater than the air compression ratio of the secondary air compression host 122. The primary air compression host 121 and the secondary air compression host 122 are arranged in this way, so that the cooperation of the multi-stage air compression hosts can be realized, and a higher air compression ratio can be realized. Meanwhile, on the basis of the compression of the primary air compression host 121, the secondary air compression host 122 can use an air compression ratio smaller than that of the primary air compression host 121, so that the energy efficiency can be improved, the energy consumption can be reduced, and the energy can be saved. In other embodiments, the air compression ratio of the primary air compression train 121 is less than the air compression ratio of the secondary air compression train 122. In other embodiments, the air compression ratio of the primary air compression train 121 is equal to the air compression ratio of the secondary air compression train 122. Thus, the primary air compressor 121 and the secondary air compressor 122 are driven independently, and can realize any compression ratio under the limitation of the maximum compression ratio, which is not limited herein.

Continuing with fig. 2, first lubrication assembly 131 includes a first oil delivery line 52 that provides oil to first receiving cavity 34. A first oil delivery pipe 52 extends in the first tank 37 and communicates the first oil tank 36 and the first accommodation chamber 34. The second lubrication assembly 132 includes a second oil delivery line 62 that can supply oil to the second receiving chamber 44. A second oil delivery pipe 62 extends in the second tank 47 to communicate with the second oil tank 46 and the second accommodation chamber 44. The first oil pipeline 52 and the first oil pipeline 52 are arranged to occupy less external space of the compressor module 11, so that the volume is small, the cost is saved, and the layout of other parts is convenient.

As shown in fig. 2 and 1, the compressor module 11 includes a first speed increaser 39 and a second speed increaser 49. The first speed increaser 39 can increase the rotation speed of the first electric motor 151, so that the rotation speed of the primary rotor 32 is increased to meet the requirement of a user. The second speed increaser 49 can increase the rotational speed of the second electric machine 152 so that the rotational speed of the secondary rotor 42 is increased to meet the user demand.

Fig. 5 is a cross-sectional view at B-B of the compressor module 11 shown in fig. 2.

As shown in fig. 2 and 5, the first speed increasing gear 39 includes a first casing 37 and a first speed increasing assembly 38 provided in the first casing 37. The first casing 37 can house a first speed increasing assembly 38. The second speed increasing gear 49 includes a second casing 47 and a second speed increasing assembly 18 disposed in the second casing 47, and the second speed increasing assembly 18 and the first speed increasing assembly 38 have the same structure, and will not be described again. The second casing 47 can house the second speed increasing assembly 18. The first box body 37 and the second box body 47 are arranged side by side, the height b is parallel and level, the primary air compression main unit 121 is connected to the first box body 37, and the primary rotor 32 is in transmission connection with the first speed increasing assembly 38; the secondary air compression main unit 122 is connected to the second box 47, and the secondary rotor 42 is in transmission connection with the second speed increasing assembly 18. Thus, the first speed increaser 39 and the second speed increaser 49 are independently arranged and are respectively and independently connected with the first-stage rotor 32 and the second-stage rotor 42, the speed of the first-stage rotor 32 and the speed of the second-stage rotor 42 can be independently increased, the adaptability of the compressor module 11 is improved, the layout is neat, and the space is saved.

Continuing with fig. 2, the first speed increaser 39 and the first lubricating assembly 131 are arranged up and down, the first lubricating assembly 131 is assembled at the bottom of the first speed increaser 39, the primary air compression main unit 121 is assembled at the top of the first speed increaser 39, and the first accommodating space 51 is arranged below the primary air compression main unit 121. The first accommodating space 51 may accommodate other components of the air compressor 10, such as a primary cooler 54. The second speed increaser 49 and the second lubricating assembly 132 are arranged up and down, the second lubricating oil tank is assembled at the bottom of the second speed increaser 49, the secondary air compression main unit 122 is assembled at the top of the second speed increaser 49, the second accommodating space 61 is arranged below the secondary air compression main unit 122, and the second accommodating space 61 can accommodate other components, such as the secondary cooler 64, of the air compressor 10. The first speed increaser 39, the first lubricating component 131, the second speed increaser 49 and the second lubricating component 132 are arranged up and down, the structure is compact, the layout is convenient, the occupied space is small, the second accommodating space 61 and the first accommodating space 51 are arranged below the second air compression host 122 and the first air compression host 121, other parts can be accommodated, the spaces are fully utilized, the space utilization rate is improved, and the occupied space is small.

As shown in fig. 4 and 5, the first speed increasing assembly 38 and the second speed increasing assembly 18 are both gear transmission assemblies, and the transmission ratio is less than 1. By arranging the first speed increasing assembly 38 and the second speed increasing assembly 18, speed increasing is realized through gear transmission, transmission precision is high, power can be transmitted to the first-stage rotor 32 and the second-stage rotor 42 more accurately, and loss in the transmission process is further reduced. The first speed increasing assembly 38 includes a driving gear 381 and an input shaft 382 extending out of the first box 37 opposite to the primary air compressor 121, and the driving gear 381 is sleeved on the input shaft 382. The input shaft 382 has radial supports at the front and rear ends and an axial location at one end. The primary air compression main unit 121 is provided with a driven gear 1211, the driven gear 1211 is arranged on the compressor and is of a cantilever beam structure, and the driving gear 381 is meshed with the driven gear 1211. The driven gear of the secondary air compressor 122 is identical to the driven gear 1211 of the primary air compressor 121 except for the gear ratio, and the description thereof is omitted.

As shown in fig. 5, the maximum rotation speeds of the first motor 151 and the second motor 152 are the same. According to the required power section, the maximum rotating speeds of the primary air compression main unit 121 and the secondary air compression main unit 122 are respectively the transmission ratio of the driving gear 381 connected with the primary air compression main unit 121 and the driving gear connected with the secondary air compression main unit 122.

FIG. 6 is a perspective view of the air compressor 10 of FIG. 1 at another angle. Fig. 7 is a schematic structural view of the first inverter 53 in the air compressor 10 shown in fig. 6.

As shown in fig. 6 and 4, in the air compressor 10 provided in the embodiment of the present application, the first motor 151 is drivingly connected to the first power input end 351, and the second motor 152 is drivingly connected to the second power input end 451. By arranging the first power input end 351 to be independently controlled by the first motor 151 and the second power input end 451 to be independently controlled by the second motor 152, the primary air compressor 121 and the secondary air compressor 122 can realize matching of any rotating speed, so that the best performance is achieved and the energy consumption is minimum.

In some embodiments, the first motor 151 and the second motor 152 are three-phase asynchronous variable frequency motors 15, respectively. The first motor 151 and the second motor 152 are arranged in this way, and can be respectively matched with the driving gear 381 in the first speed increaser 39 and the driving gear 381 in the second speed increaser 49, and the required wheel speed is achieved through speed increasing, so that the wheel speed required by the primary air compression main engine 121 and the wheel speed required by the secondary air compression main engine 122 are respectively achieved, and the applicability of the compressor module 11 is improved. In other embodiments, the first motor 151 and the second motor 152 are permanent magnet variable frequency motors, respectively. The permanent magnet variable frequency motor is high in rotating speed, the first motor 151 and the second motor 152 can be directly connected with the first power input end 351 and the second power input end 451 in a transmission mode respectively, the number of components is reduced, the structure is simplified, matching of any rotating speed can be achieved, and therefore the optimal rotating speed ratio is achieved.

As shown in fig. 6, the air compressor further includes a first inverter 53 and a second inverter 63. The first inverter 53 may change the frequency of the first motor 151 and the second inverter 63 may change the frequency of the second motor 152. The first frequency converter 53 includes a first control terminal connected to the first motor 151, and the first frequency converter 53 controls the first motor 151 to rotate at a first rotation speed according to a first electric signal received by the first control terminal. The second frequency converter 63 includes a second control terminal connected to the second motor 152, and the second frequency converter 63 controls the second motor 152 to rotate at a second rotation speed according to a second electric signal received by the second control terminal. Therefore, the first motor 151 and the second motor 152 are respectively and independently changed in current by the first frequency converter 53 and the second frequency converter 63, so that the rotating frequency of the first motor 151 and the second motor 152 is changed, any rotating speed of the first motor 151 and the second motor 152 is matched, an optimal rotating speed ratio is achieved, and further the first-stage air compression host 121 and the second-stage air compression host 122 can achieve rotating speed adaptation of the optimal rotating speed, so that energy consumption is reduced, and optimal performance is achieved.

The first frequency converter 53 and the second frequency converter 63 shown in fig. 7 have the same structure. The second frequency converter 63 is adjacent to the first frequency converter 53 and is arranged at the same height, so that the structure is compact and the arrangement is convenient. The second frequency converter 63 is located to the left of the first frequency converter 53 in fig. 7 and inside the housing of the second frequency converter, the second frequency converter 63 not being shown in fig. 7.

In some embodiments, the air compressor includes a first speed increaser 39 and a second speed increaser 49 arranged side by side, the first electric motor 151 and the primary compression main machine are arranged on two opposite sides of the first speed increaser 39, the second electric motor 152 and the secondary compression main machine are arranged on two opposite sides of the second speed increaser 49, and the first electric motor 151 and the second electric motor 152 are arranged side by side on the same side. The first speed-increasing gear 39 and the second speed-increasing gear 49 are arranged side by side in this way, so that the layout is neat, a space can be reserved, and the arrangement of parts is convenient.

FIG. 8 is a schematic diagram of an air compressor 10 including a first-stage cooler 54, a second-stage cooler 64, a first air pipe 55, and a second air pipe according to the present application.

As shown in FIG. 8, the air compressor further includes a primary cooler 54, a secondary cooler 64, a first air delivery conduit 55, and a second air delivery conduit (not shown). The primary cooler 54 may implement primary cooling and the secondary cooler 64 may implement secondary cooling. When multi-stage compression is adopted, the compressed gas after one-stage compression needs to be cooled at equal pressure by the first-stage cooler 54 to reduce the temperature, and then enters the next-stage compression main machine 12. The primary cooler 54 is arranged, so that the temperature can be reduced, the density can be increased, the further compression of the next-stage air compression main machine is facilitated, and the power consumption can be greatly saved compared with one-time compression. The first-stage cooler 54 and the second-stage cooler 64 may include two coolers and two or more coolers, respectively, and the two or more coolers do not include two coolers. The first air delivery conduit 55 delivers compressed air from the primary air compressor 121 to the primary cooler 54 for cooling. The second air delivery conduit delivers compressed air from the secondary air compressor 122 to the primary cooler 54 for cooling. Therefore, the gas after primary compression can be input into the cooler, and the efficiency of gas compression is improved.

Wherein, the primary cooler 54 is located below the primary air compression main unit 121; the secondary cooler 64 is located below the secondary air compression main 122.

The primary air compressor main unit 121 includes a primary air outlet 311 communicating with the primary compression chamber 31. The first air pipe 55 is respectively connected with the primary cooler 54 and the primary air outlet 311; the secondary air compression host 122 comprises a secondary air outlet 411 communicated with the secondary compression cavity 41, and the secondary cooler 64 is connected with the secondary air outlet 411; the second air delivery pipe is respectively connected with the secondary cooler 64 and the secondary air outlet 411. The primary cooler 54, the secondary cooler 64, the first air pipe 55 and the second air pipe are arranged in this way, the structure is compact, the layout is convenient, the independent compression functions of the primary air compressor main unit 121 and the secondary air compressor main unit 122 can be realized through the control of the independent first motor 151 and the independent second motor 152, and the requirements of different users on the wheel speed can be met in the limitation of the maximum wheel speed.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A compressor module, comprising:

2. The compressor module as recited in claim 1, wherein said primary air compressor element and said secondary air compressor element are spaced apart side-by-side and are substantially flush in height;

and/or the presence of a gas in the gas,

3. The compressor module of claim 1, comprising:

4. The compressor module as claimed in claim 3, wherein the first speed increaser and the first lubricating assembly are arranged in an up-down manner, the first lubricating assembly is assembled at the bottom of the first speed increaser, the primary air compression main unit is assembled at the top of the first speed increaser, and a first accommodating space is arranged below the primary air compression main unit;

and/or the presence of a gas in the gas,

5. The compressor module of claim 3, wherein the first lubrication assembly includes a first oil line extending within the first housing communicating the first oil tank and the first receiving cavity;

6. An air compressor, comprising:

the compressor module of claim 1;

the first motor is in transmission connection with the first power input end;

7. The air compressor of claim 6, further comprising:

and the second frequency converter comprises a second control end connected with the second motor, and the second frequency converter controls the second motor to rotate at a second rotating speed through a second electric signal received by the second control end.

8. The air compressor according to claim 6, wherein the air compressor includes a first speed increaser and a second speed increaser arranged side by side, the first motor and the primary compression main unit are arranged on two opposite sides of the first speed increaser, the second motor and the secondary compression main unit are arranged on two opposite sides of the second speed increaser, and the first motor and the second motor are arranged side by side on the same side.

9. The air compressor of claim 6, wherein the first motor and the second motor are each a three-phase asynchronous variable frequency motor.

10. The air compressor as claimed in claim 7, further comprising: