CN117006760A

CN117006760A - Air conditioner, compressor unit and control method thereof

Info

Publication number: CN117006760A
Application number: CN202311015690.3A
Authority: CN
Inventors: 周宇; 黄翔; 周堂; 梁湖
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2023-11-07

Abstract

The application relates to an air conditioner, a compressor unit and a control method thereof, wherein the compressor unit comprises: a compressor having a volute; the first cooling assembly is used for cooling the volute; the first cooling assembly comprises a liquid storage tank, a first liquid inlet pipeline, a second liquid inlet pipeline and a third liquid inlet pipeline, one end of the first liquid inlet pipeline is communicated with the liquid storage tank, the other end of the first liquid inlet pipeline is communicated with the third liquid inlet pipeline, the third liquid inlet pipeline is communicated with the volute, and the first liquid inlet pipeline is provided with a pressure regulating pump. An air conditioner comprises the compressor unit. The control method of the compressor unit comprises the following steps: and controlling the opening and closing sequence of the second liquid inlet pipeline and the third liquid inlet pipeline according to the running state of the compressor. The air conditioner, the compressor unit and the control method thereof can enable the volute to be quickly cooled, and prevent the cooling liquid from flowing back due to insufficient hydraulic pressure.

Description

Air conditioner, compressor unit and control method thereof

Technical Field

The application relates to the technical field of air conditioners, in particular to an air conditioner, a compressor unit and a control method thereof.

Background

The compressor unit is high in temperature during operation, the highest exhaust temperature of the compressor unit can reach more than 200 ℃, the high temperature generated during operation is not only unfavorable for the compressor, but also affects the normal operation of other devices, the operation temperature of the unit needs to be reduced for ensuring the stable operation of the unit, but the cooling liquid is easy to flow back and the cooling effect is poor when the current compressor unit is cooled.

Disclosure of Invention

Accordingly, it is necessary to provide an air conditioner, a compressor unit, and a control method thereof, which solve the problems that the coolant is likely to flow back and the cooling effect is poor when the compressor unit is cooled.

A compressor package, comprising:

a compressor having a volute;

the first cooling assembly is used for cooling the volute; the first cooling assembly comprises a liquid storage tank, a first liquid inlet pipeline, a second liquid inlet pipeline and a third liquid inlet pipeline, one end of the first liquid inlet pipeline and one end of the second liquid inlet pipeline are communicated with the liquid storage tank, the other end of the first liquid inlet pipeline and the other end of the second liquid inlet pipeline are communicated with the third liquid inlet pipeline, the third liquid inlet pipeline is communicated with the volute, and the first liquid inlet pipeline is provided with a pressure regulating pump;

and controlling the opening and closing sequence of the second liquid inlet pipeline and the third liquid inlet pipeline according to the running state of the compressor.

According to the compressor unit, the first liquid inlet pipeline is intersected with the second liquid inlet pipeline and is communicated with the third liquid inlet pipeline, the pressure regulating pump is arranged on the first liquid inlet pipeline, the opening and closing sequence of the second liquid inlet pipeline and the third liquid inlet pipeline is controlled according to the running state of the compressor, so that preparation is made for the hydraulic requirement of the compressor when the volute is cooled, the volute is cooled rapidly, and backflow of cooling liquid due to insufficient hydraulic pressure is prevented.

In one embodiment, the first cooling assembly further includes a first control valve and a second control valve, the first control valve is disposed on the second liquid inlet pipeline and is used for controlling the opening and closing of the second liquid inlet pipeline, and the second control valve is disposed on the third liquid inlet pipeline and is used for controlling the opening and closing of the third liquid inlet pipeline.

In one embodiment, the compressor unit further comprises a spray header, the first cooling assembly further comprises a first liquid outlet pipeline, the first liquid outlet pipeline is communicated with the third liquid inlet pipeline and the volute of the compressor, and the volute of the compressor is communicated with the spray header.

In one embodiment, the first cooling assembly further includes a second liquid outlet pipe, and the second liquid outlet pipe is communicated with the third liquid inlet pipe and the main shaft of the compressor.

In one embodiment, the first cooling assembly further comprises a third control valve with an adjustable opening, and the third control valve is arranged on the first liquid outlet pipeline and/or the second liquid outlet pipeline.

In one embodiment, the first cooling assembly further comprises a first liquid supply pipeline and a liquid level detection part, the liquid level detection part is arranged in the liquid storage tank, the first liquid supply pipeline is communicated with the liquid storage tank, and the opening and closing of the first liquid supply pipeline are controlled according to the detection result of the liquid level detection part.

In one embodiment, the compressor package further includes a second cooling assembly in communication with and for cooling the drive of the compressor.

In one embodiment, the second cooling assembly includes a cooler, a second liquid supply pipeline and a return pipeline, and an outlet of the cooler, the second liquid supply pipeline, a driving member of the compressor, the return pipeline and an inlet of the cooler are sequentially connected and form a loop.

In one embodiment, the second cooling assembly further comprises a surface cooler, the surface cooler being provided in the return line.

In one embodiment, the second cooling assembly further comprises a stop valve, and the stop valve is arranged on the second liquid supply pipeline and used for controlling the opening and closing of the second liquid supply pipeline.

An air conditioner comprises the compressor unit.

According to the air conditioner, the compressor unit can be prepared for the hydraulic requirement of the compressor when the volute is cooled, so that the volute is quickly cooled, and the cooling liquid is prevented from flowing back due to insufficient hydraulic pressure.

The control method of the compressor unit comprises the following steps:

controlling the opening and closing sequence of the second liquid inlet pipeline and the third liquid inlet pipeline according to the running state of the compressor;

when the compressor is in a starting preparation state, controlling the second liquid inlet pipeline to be opened and the third liquid inlet pipeline to be closed, and starting the pressure regulating pump;

and when the compressor is in a normal starting state, controlling the second liquid inlet pipeline to be closed and controlling the third liquid inlet pipeline to be opened.

According to the control method of the compressor unit, the first liquid inlet pipeline is intersected with the second liquid inlet pipeline and is communicated with the third liquid inlet pipeline, the pressure regulating pump is arranged on the first liquid inlet pipeline, and the opening and closing sequence of the second liquid inlet pipeline and the third liquid inlet pipeline is controlled according to the running state of the compressor, so that preparation is made for the hydraulic requirement of the compressor when the volute is cooled, the volute is cooled rapidly, and backflow of cooling liquid due to insufficient hydraulic pressure is prevented.

Drawings

FIG. 1 is a schematic diagram of a compressor package according to an embodiment.

Fig. 2 is a schematic view of a compressor package according to another embodiment.

Reference numerals:

100. a compressor; 200. a first cooling assembly; 210. a liquid storage tank; 220. a first liquid inlet pipeline; 221. a pressure regulating pump; 222. a pressure detecting member; 223. a first heating member; 224. a first filter; 230. a second liquid inlet pipeline; 231. a first control valve; 240. a third liquid inlet pipeline; 241. a second control valve; 250. a first liquid outlet pipeline; 251. a third control valve; 260. a second liquid outlet pipeline; 270. a first liquid supply line; 271. a liquid level detecting member; 272. a fourth control valve; 300. a spray header; 400. a second cooling assembly; 410. a cooler; 420. a second liquid supply line; 421. a second filter; 422. a second heating member; 423. a stop valve; 430. a return line; 431. and a surface cooler.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the present disclosure, the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

In the present application, unless explicitly specified and limited otherwise, the terms "initial," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances. When an element is referred to as being "fixed" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Referring to fig. 1, a compressor unit in an embodiment includes a compressor 100 and a first cooling assembly 200, wherein the compressor 100 has a volute, and the first cooling assembly 200 is used for cooling the volute.

The first cooling assembly 200 includes a liquid storage tank 210, a first liquid inlet pipeline 220, a second liquid inlet pipeline 230 and a third liquid inlet pipeline 240, one end of the first liquid inlet pipeline 220 and one end of the second liquid inlet pipeline 230 are communicated with the liquid storage tank 210, the other end of the first liquid inlet pipeline 220 and the other end of the second liquid inlet pipeline 230 are communicated with the third liquid inlet pipeline 240, the third liquid inlet pipeline 240 is communicated with a volute, the first liquid inlet pipeline 220 is provided with a pressure regulating pump 221, and the opening and closing sequence of the second liquid inlet pipeline 230 and the third liquid inlet pipeline 240 is controlled according to the running state of the compressor 100.

It should be noted that, the liquid storage tank 210 is used for storing the cooling liquid, and the first liquid inlet pipeline 220 is in a normally open state. Because the first feed line 220 meets the second feed line 230 and communicates with the third feed line 240, the hydraulic pressure in the first feed line 220 may be regulated prior to the first feed line 220 meeting the third feed line 240 because the first feed line 220 is provided with a pressure regulating pump 221. By controlling the opening and closing sequence of the second liquid inlet pipe 230 and the third liquid inlet pipe 240, the hydraulic pressure of the cooling liquid output into the volute can be controlled.

For example, when the compressor 100 is in the start-up ready state, the second liquid inlet pipeline 230 is opened and the third liquid inlet pipeline 240 is closed, the liquid storage tank 210, the first liquid inlet pipeline 220 and the second liquid inlet pipeline 230 form a circulation loop, that is, the cooling liquid in the liquid storage tank 210 is regulated by the pressure regulating pump 221 and then circulates in the first liquid inlet pipeline 220 and the second liquid inlet pipeline 230, and at this time, the preparation for the hydraulic requirement when the volute is cooled is made; when the compressor 100 is in the normal start state, the second liquid inlet pipe 230 is closed and the third liquid inlet pipe 240 is opened, and the cooling liquid is rapidly delivered to the volute by the third liquid inlet pipe 240, so that the volute is rapidly cooled.

In the above compressor unit, the first liquid inlet pipeline 220 is intersected with the second liquid inlet pipeline 230 and is communicated with the third liquid inlet pipeline 240, the pressure regulating pump 221 is arranged on the first liquid inlet pipeline 220, and the opening and closing sequence of the second liquid inlet pipeline 230 and the third liquid inlet pipeline 240 is controlled according to the operation state of the compressor 100, so that the preparation is made for the hydraulic requirement when the volute of the compressor 100 is cooled, the volute is quickly cooled, and the backflow of the cooling liquid due to insufficient hydraulic pressure is prevented.

In the above embodiment, the first cooling assembly 200 further includes the pressure detecting member 222, the first heating member 223 and the first filter 224 disposed in the first liquid inlet pipe 220, and the first heating member 223, the first filter 224, the pressure regulating pump 221 and the pressure detecting member 222 are disposed in sequence along the flowing direction of the cooling liquid.

The pressure detecting element 222 is configured to detect a hydraulic pressure of the first liquid inlet pipeline 220, and adjust a pressure applied by the pressure adjusting pump 221 to the first liquid inlet pipeline 220 according to a detection result of the pressure detecting element 222; the first filter 224 is used for filtering impurities of the cooling liquid in the first liquid inlet pipeline 220, and the first heating element 223 is used for heating the first liquid inlet pipeline 220 so as to prevent the first liquid inlet pipeline 220 from freezing when the temperature is too low.

For example, when the hydraulic pressure detected by the pressure detecting member 222 is higher than a preset value, the pressure regulating pump 221 is controlled to reduce the pressure; when the hydraulic pressure detected by the pressure detecting member 222 is lower than a preset value, the pressure regulating pump 221 is controlled to increase the pressure.

Alternatively, the pressure detecting member 222 is a single-function or multi-function sensor, the first heating member 223 is a heating pipeline and is wound outside the first liquid inlet pipeline 220, and the first filter 224 may be a primary, medium-effect or high-effect filter. Here, the types of the pressure detecting member 222, the first heating member 223, and the first filter 224 are not particularly limited.

In the above embodiment, the number of compressors 100 may be one as shown in fig. 1. The number of compressors 100 may also be at least two, as shown in fig. 2, in which case each compressor 100 may be connected in series.

Referring to fig. 1, the first cooling assembly 200 further includes a first control valve 231 and a second control valve 241, where the first control valve 231 is disposed on the second liquid inlet pipe 230 and is used for controlling the opening and closing of the second liquid inlet pipe 230, and the second control valve 241 is disposed on the third liquid inlet pipe 240 and is used for controlling the opening and closing of the third liquid inlet pipe 240.

For example, when the compressor 100 is in a start-up ready state, the second feed line 230 is open and the third feed line 240 is closed, at which time the first control valve 231 is open and the second control valve 241 is closed; when the compressor 100 is in the normal start state, the second inlet line 230 is closed and the third inlet line 240 is opened, and at this time, the first control valve 231 is closed and the second control valve 241 is opened.

In this embodiment, the first control valve 231 and the second control valve 241 are electromagnetic valves, so as to realize automatic control of the liquid inlet pipeline. In other embodiments, the first control valve 231 and the second control valve 241 may also be mechanical valves or other types of valves.

Further, referring to fig. 1, the compressor unit further includes a spray header 300, the first cooling assembly 200 further includes a first liquid outlet pipe 250, the first liquid outlet pipe 250 is communicated with the third liquid inlet pipe 240 and the volute of the compressor 100, and the volute of the compressor 100 is communicated with the spray header 300.

It can be appreciated that the cooling liquid output by the third liquid inlet pipeline 240 flows into the volute through the first liquid outlet pipeline 250, exchanges heat with the volute, and is sprayed into the steam system through the spray header 300, the cooling liquid is vaporized under the high temperature condition and circularly flows in the steam system, and the cooling liquid absorbs heat in the vaporization process, so that the superheat degree of steam in the steam system is reduced.

In the present embodiment, the number of the first liquid outlet pipes 250 is not limited to one, i.e. the number of the first liquid outlet pipes 250 may be at least two. When the number of the first liquid outlet pipelines 250 is at least two, each first liquid outlet pipeline 250 is parallel connected between the third liquid inlet pipeline 240 and the volute of the compressor 100.

In the present embodiment, the number of the showerheads 300 is not limited to one, and the number of the showerheads 300 may be at least two.

Further, referring to fig. 1, the first cooling assembly 200 further includes a second liquid outlet pipe 260, and the second liquid outlet pipe 260 is connected to the third liquid inlet pipe 240 and the main shaft of the compressor 100.

It can be appreciated that the cooling liquid enters the main shaft of the compressor 100 through the third liquid inlet pipeline 240 and the second liquid outlet pipeline 260, participates in shafting sealing, and reduces the temperature of the compressor 100 while preventing steam leakage.

In the present embodiment, the number of the second liquid outlet pipes 260 is not limited to one, i.e. the number of the second liquid outlet pipes 260 may be at least two. When the number of the second liquid outlet pipelines 260 is at least two, each of the first liquid outlet pipelines 250 is parallel connected between the third liquid inlet pipeline 240 and the main shaft of the compressor 100.

Referring to fig. 1, the first cooling assembly 200 further includes a third control valve 251 with an adjustable opening, where the third control valve 251 is disposed on the first liquid outlet pipe 250 and/or the second liquid outlet pipe 260.

Specifically, the third control valve 251 is a water valve with an adjustable opening, the pressure and the flow required by the first liquid outlet pipeline 250 and/or the second liquid outlet pipeline 260 are different, and the third control valve 251 can adjust the water pressure and the flow of the first liquid outlet pipeline 250 and/or the second liquid outlet pipeline 260 according to actual requirements.

For example, referring to fig. 1, the number of the first liquid outlet pipes 250 is two, the number of the second liquid outlet pipes 260 is two, and each of the first liquid outlet pipes 250 and the second liquid outlet pipes 260 is provided with a third control valve 251.

In this embodiment, the third control valve 251 is an electromagnetic valve to realize automatic control of the liquid outlet pipe. In other embodiments, the third control valve 251 may also be a mechanical valve or other type of valve.

Referring to fig. 1, the first cooling assembly 200 further includes a first liquid supply pipeline 270 and a liquid level detecting member 271, wherein the liquid level detecting member 271 is disposed in the liquid storage tank 210, the first liquid supply pipeline 270 is communicated with the liquid storage tank 210, and the opening and closing of the first liquid supply pipeline 270 is controlled according to the detection result of the liquid level detecting member 271.

The first liquid supply pipe 270 is used for communicating the liquid storage tank 210 with an external liquid supply mechanism, and supplying liquid to the liquid storage tank 210 through the external liquid supply mechanism.

In the present embodiment, the number of the liquid level detecting members 271 may be two. For example, the two liquid level detecting members 271 are respectively installed at a first height position and a second height position in the liquid storage tank 210, the first height position is higher than the second height position, and when the liquid level in the liquid storage tank 210 is lower than the second height position, the first liquid supply pipeline 270 is controlled to be opened to supplement liquid for the liquid storage tank 210 until the first height position is reached.

In other embodiments, the number of level detecting members 271 may also be one or at least three. For example, in an embodiment in which only one liquid level detecting member 271 is provided, when the liquid level detected by the liquid level detecting member 271 is higher than a preset value, the first liquid supply line 270 is controlled to be closed; when the liquid level detected by the liquid level detecting member 271 is lower than the preset value, the first liquid supply pipeline 270 is controlled to be opened to replenish the liquid tank 210.

Further, referring to fig. 1, the first cooling assembly 200 further includes a fourth control valve 272, where the fourth control valve 272 is disposed on the first liquid supply pipeline 270 and is used for controlling the opening and closing of the first liquid supply pipeline 270.

In this embodiment, the fourth control valve 272 is a solenoid valve to realize automatic control of the pipeline. In other embodiments, the fourth control valve 272 may also be a mechanical valve or other type of valve.

Referring to fig. 1, the compressor unit further includes a second cooling assembly 400, and the second cooling assembly 400 is in communication with the driving member of the compressor 100 and is used for cooling the driving member of the compressor 100. In this way, different cooling assemblies can be utilized to cool different parts of the compressor 100, and the cooling effect is better and the efficiency is higher.

Specifically, referring to fig. 1, the second cooling assembly 400 includes a cooler 410, a second liquid supply pipe 420 and a return pipe 430, wherein an outlet of the cooler 410, the second liquid supply pipe 420, a driving member of the compressor 100, the return pipe 430 and an inlet of the cooler 410 are sequentially connected to form a loop.

The driving member of the compressor 100, that is, the motor of the compressor 100 is described. The driving part of the compressor 100 is cooled by adopting a closed circulation mode, the cooler 410 is provided with a built-in water pump and a water tank, the chilled water generated by the cooler 410 is pressurized by the built-in water pump and then enters the internal flow channel of the compressor 100 through the second liquid supply pipeline 420, and the chilled water after heat exchange flows back to the built-in water tank of the cooler for cooling through the return pipeline 430 to participate in the next circulation.

In the present embodiment, the number of the second liquid supply pipes 420 and the return pipes 430 is not limited to one, and the number of the second liquid supply pipes 420 and the return pipes 430 may be at least two.

In the above embodiment, the second cooling assembly 400 further includes the second filter 421 and the second heating element 422 disposed in the second liquid supply pipe 420, and the second filter 421 and the second heating element 422 are disposed in sequence along the flowing direction of the cooling liquid.

The second filter 421 is used for filtering impurities of the cooling liquid in the second liquid supply pipeline 420, and the second heating element 422 is used for heating the second liquid supply pipeline 420 to prevent the second liquid supply pipeline 420 from freezing when the temperature is too low.

Optionally, the second filter 421 may be a primary, a middle-effect or a high-effect filter, and the second heating element 422 is a heating pipeline and is wound outside the second liquid supply pipeline 420. Here, the types of the second heating element 422 and the second filter 421 are not particularly limited.

Further, referring to fig. 1, the second cooling assembly 400 further includes a surface cooler 431, and the surface cooler 431 is disposed in the return line 430.

It should be noted that, the surface cooler 431 is disposed in the return line 430, and the chilled water flows into the cooler 410 through the return line 430 after being cooled by heat exchange of the surface cooler 431, so as to reduce energy consumption.

Referring to fig. 1, the second cooling assembly 400 further includes a stop valve 423, where the stop valve 423 is disposed on the second liquid supply pipe 420 and is used for controlling the opening and closing of the second liquid supply pipe 420.

For example, when a component within the compressor package needs to be replaced, shut-off valve 423 is adjusted to close second feed line 420; when the replacement of the components in the compressor unit is completed, the shut-off valve 423 is adjusted to open the second liquid supply line 420.

Referring to fig. 1, an air conditioner in an embodiment includes the compressor unit described above.

It should be noted that, the air conditioner includes other components such as a condensing unit in addition to the compressor unit.

In the above air conditioner, the first liquid inlet pipeline 220 and the second liquid inlet pipeline 230 of the compressor unit are intersected and communicated with the third liquid inlet pipeline 240, the pressure regulating pump 221 is arranged on the first liquid inlet pipeline 220, and the opening and closing sequence of the second liquid inlet pipeline 230 and the third liquid inlet pipeline 240 is controlled according to the operation state of the compressor 100, so that the preparation is made for the hydraulic requirement when the volute of the compressor 100 is cooled, the volute is quickly cooled, and the backflow of the cooling liquid due to insufficient hydraulic pressure is prevented.

Referring to fig. 1, a control method of a compressor unit in an embodiment includes:

the opening and closing sequence of the second liquid inlet pipeline 230 and the third liquid inlet pipeline 240 is controlled according to the operation state of the compressor 100;

when the compressor 100 is in the start-up preparation state, the second liquid inlet pipe 230 is controlled to be closed and the third liquid inlet pipe 240 is controlled to be opened, and the pressure regulating pump 221 is started;

when the compressor 100 is in the normal start state, the second liquid inlet pipe 230 is controlled to be opened and the third liquid inlet pipe 240 is controlled to be closed.

In the above-mentioned control method of the compressor unit, the first liquid inlet pipeline 220 is intersected with the second liquid inlet pipeline 230 and is communicated with the third liquid inlet pipeline 240, the pressure regulating pump 221 is arranged on the first liquid inlet pipeline 220, and the opening and closing sequence of the second liquid inlet pipeline 230 and the third liquid inlet pipeline 240 is controlled according to the operation state of the compressor 100, so that preparation is made for the hydraulic requirement when the volute of the compressor 100 is cooled, the volute is cooled rapidly, and the backflow of the cooling liquid due to insufficient hydraulic pressure is prevented.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A compressor package, comprising:

a compressor (100) having a volute;

a first cooling assembly (200) for cooling the volute; the first cooling assembly (200) comprises a liquid storage tank (210), a first liquid inlet pipeline (220), a second liquid inlet pipeline (230) and a third liquid inlet pipeline (240), one end of the first liquid inlet pipeline (220) is communicated with the liquid storage tank (210), the other end of the first liquid inlet pipeline (220) is communicated with the other end of the second liquid inlet pipeline (230) is communicated with the third liquid inlet pipeline (240), the third liquid inlet pipeline (240) is communicated with the volute, and the first liquid inlet pipeline (220) is provided with a pressure regulating pump (221);

wherein, the opening and closing sequence of the second liquid inlet pipeline (230) and the third liquid inlet pipeline (240) is controlled according to the running state of the compressor (100).

2. The compressor assembly of claim 1, wherein the first cooling assembly (200) further comprises a first control valve (231) and a second control valve (241), the first control valve (231) is disposed on the second liquid inlet pipeline (230) and is used for controlling the opening and closing of the second liquid inlet pipeline (230), and the second control valve (241) is disposed on the third liquid inlet pipeline (240) and is used for controlling the opening and closing of the third liquid inlet pipeline (240).

3. The compressor assembly of claim 1, further comprising a spray header (300), wherein the first cooling assembly (200) further comprises a first outlet line (250), wherein the first outlet line (250) communicates with the third inlet line (240) and with a volute of the compressor (100), wherein the volute of the compressor (100) communicates with the spray header (300).

4. The compressor assembly of claim 1, wherein the first cooling assembly (200) further comprises a second outlet conduit (260), the second outlet conduit (260) communicating with the third inlet conduit (240) and a main shaft of the compressor (100).

5. The compressor unit according to claim 3 or 4, wherein the first cooling assembly (200) further comprises a third control valve (251) of adjustable opening, the third control valve (251) being provided in the first outlet line (250) and/or the second outlet line (260).

6. The compressor unit of claim 1, wherein the first cooling assembly (200) further comprises a first liquid supply pipeline (270) and a liquid level detection member (271), the liquid level detection member (271) is arranged in the liquid storage tank (210), the first liquid supply pipeline (270) is communicated with the liquid storage tank (210), and the opening and closing of the first liquid supply pipeline (270) is controlled according to the detection result of the liquid level detection member (271).

7. The compressor assembly of claim 1, further comprising a second cooling assembly (400), the second cooling assembly (400) being in communication with the drive of the compressor (100) and configured to cool the drive of the compressor (100).

8. The compressor assembly of claim 7, wherein the second cooling assembly (400) includes a cooler (410), a second liquid supply line (420), and a return line (430), the outlet of the cooler (410), the second liquid supply line (420), a driving member of the compressor (100), the return line (430), and an inlet of the cooler (410) being sequentially connected and forming a circuit.

9. The compressor package as recited in claim 8, wherein the second cooling assembly (400) further comprises a surface cooler (431), the surface cooler (431) being provided to the return line (430).

10. The compressor assembly of claim 8, wherein the second cooling assembly (400) further comprises a shut-off valve (423), the shut-off valve (423) being provided to the second liquid supply line (420) and being configured to control opening and closing of the second liquid supply line (420).

11. An air conditioner comprising a compressor assembly as claimed in any one of claims 1 to 10.

12. A control method of a compressor set according to any one of claims 1 to 10, comprising:

controlling the opening and closing sequence of the second liquid inlet pipeline (230) and the third liquid inlet pipeline (240) according to the running state of the compressor (100);

when the compressor (100) is in a start-up preparation state, controlling the second liquid inlet pipeline (230) to be opened and the third liquid inlet pipeline (240) to be closed, and starting the pressure regulating pump (221);

when the compressor (100) is in a normal starting state, the second liquid inlet pipeline (230) is controlled to be closed and the third liquid inlet pipeline (240) is controlled to be opened.