Air treatment equipment and control method

Abstract

The invention discloses air treatment equipment and a control method. The air treatment equipment comprises a first matching pipeline, a first control pipeline, a first heat exchange unit, a water vapor compressor, a second heat exchange unit and a throttling component, wherein the first heat exchange unit, the water vapor compressor, the second heat exchange unit and the throttling component are sequentially connected. At least one of the first matching pipeline and the first control pipeline is provided with a first flow control component. The water vapor compressor comprises a shell, the shell is internally provided with a bearing sleeve and a stator, and the bearing sleeve is internally provided with a first cooling cavity; the rotor shaft is located in the shell and penetrates through the bearing sleeve and the stator; the bearing is sleeved between the bearing sleeve and the rotor shaft; the compression unit is arranged at the end part of the rotor shaft; on the basis of opening of the first flow control component, the first control pipeline is arranged to form fluid flowing from the first heat exchange unit to the first cooling cavity, and the first matching pipeline is arranged to form fluid flowing from the first cooling cavity to the first heat exchange unit. According to the scheme, a cooling device for cooling the water vapor compressor does not need to be additionally arranged, and the structure is simpler.

Description

Technical Field

[0001] This document relates to the technology of electrical equipment, especially an air treatment device and a control method thereof. Background Art

[0002] Refrigerants have gone through three generations. Before 1930, there were no specific requirements for refrigerants, and any applicable substances could be used as refrigerants, mainly natural refrigerants such as NH3, CO2, SO2, air, etc., but there were many technical problems in their application. The second generation is chlorine-containing synthetic refrigerants, including chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), but they can cause ozone layer depletion. The third generation is hydrofluorocarbons (HFCs), although it solves the problem of ozone layer depletion, it will bring a strong greenhouse effect. In the new situation, in order to prevent global warming and reduce the greenhouse effect, people have started to accelerate the pace of replacing CFCs and HCFCs.

[0003] Among new refrigerants, natural refrigerant refrigerants have received great attention. There are mainly two categories of natural refrigerants that can be used as refrigerants. One category is specific hydrocarbons, and the most commonly used is propane (R290). However, due to safety problems such as flammability and explosiveness of such substances, its popularization and use are restricted. The other category is inorganic refrigerants, and the more concerned ones are ammonia (R717), carbon dioxide (R744) and water (R718). The biggest disadvantage of ammonia (R717) is its strong toxicity. In contrast, the physical properties of water and carbon dioxide are the best, which are both economical and affordable. However, the critical temperature of carbon dioxide is 31°C and the critical pressure is 7.38 MPa. It is in a supercritical state at higher temperatures, the system pressure is very high, and the safety is poor, with great potential safety hazards. Water (R718) is non-toxic, non-flammable, non-explosive, exists widely in nature, is the most friendly to the ecological environment and human health, and when used as a refrigerant, the system operates in a vacuum state, with high safety, ODP (Ozone Depletion Potential) = 0, GWP (Global Warming Potential) = 0. However, air treatment devices using water as a refrigerant are all equipped with cooling devices for cooling the water vapor compressor, and their structures are relatively complex. Summary of the Invention

[0004] This application provides an air treatment device that does not require an additional cooling device for cooling the water vapor compressor, and its structure is simpler.

[0005] This application also provides a control method for the air treatment device.

[0006] The air treatment equipment provided by the present application includes a first matching pipeline, a first control pipeline, and a first heat exchange unit, a steam compressor, a second heat exchange unit, and a throttling component connected in sequence. At least one of the first matching pipeline and the first control pipeline is provided with a first flow control component; the steam compressor includes: a housing with a bearing sleeve and a stator inside, and a first cooling chamber inside the bearing sleeve; a rotor shaft located inside the housing and passing through the bearing sleeve and the stator; a bearing sleeved between the bearing sleeve and the rotor shaft; and a compression unit provided at the end of the rotor shaft; wherein, the first end of the first control pipeline is connected to the first heat exchange unit, the second end of the first control pipeline is connected to the first port of the first cooling chamber, the first end of the first matching pipeline is connected to the second port of the first cooling chamber, and the second end of the first matching pipeline is connected to the first heat exchange unit; based on the opening of the first flow control component, the first control pipeline is configured to form a fluid flowing from the first heat exchange unit to the first cooling chamber, and the first matching pipeline is configured to form a fluid flowing from the first cooling chamber to the first heat exchange unit.

[0007] In some exemplary embodiments, the first flow control component is a first control valve or a water pump.

[0008] In some exemplary embodiments, the first heat exchange unit includes: an evaporation chamber, to which the first port of the steam compressor, the second end of the first matching pipeline, and the second end of the throttling component are all connected; an indoor heat exchanger provided outside the evaporation chamber; and a first liquid pump connected to the evaporation chamber and the indoor heat exchanger to form a first circulation path, and the first end of the first control pipeline is connected between the outlet of the first liquid pump and the evaporation chamber.

[0009] In some exemplary embodiments, the air treatment equipment further includes: a second heat exchanger having a first heat exchange flow path and a second heat exchange flow path, and the first circulation path further includes the first heat exchange flow path; a third matching pipeline and a third control pipeline, a cooling flow path is formed between the stator and the housing, and the third matching pipeline, the third control pipeline, the cooling flow path, and the second heat exchange flow path are connected to form a second circulation path, and at least one of the third matching pipeline and the third control pipeline is provided with a second liquid pump.

[0010] In some exemplary embodiments, the air treatment equipment further includes: a fourth control pipeline with a fourth flow control component, the first end of the fourth control pipeline is connected between the steam compressor and the first port of the second heat exchange unit, and the second end of the fourth control pipeline is connected between the steam compressor and the second port of the first heat exchange unit.

[0011] In some exemplary embodiments, the fourth flow control component is a fourth control valve or a water pump.

[0012] In some exemplary embodiments, both the bearing housing and the bearing include two, and the stator is located between the two bearing housings.

[0013] In some exemplary embodiments, the second heat exchange unit includes an outdoor heat exchanger, the compression unit includes a primary compression unit and a secondary compression unit, a first port of the primary compression unit is connected to a second port of the first heat exchange unit, a second port of the primary compression unit is connected to a first port of the secondary compression unit through an inter-stage connection pipeline, and a second port of the secondary compression unit is connected to a first port of the outdoor heat exchanger.

[0014] In some exemplary embodiments, the air handling device further includes: a liquid storage tank having a liquid inlet, a first liquid outlet, and a third liquid outlet, the liquid inlet is connected to a second port of the outdoor heat exchanger, and the first liquid outlet is connected to the throttling component; two second matching pipelines and a second control pipeline having a second flow control component, the housing, the stator, the rotor shaft, the two bearing housings, and the two bearings jointly enclose a second cooling chamber, a first end of the second control pipeline is connected to the third liquid outlet, a second end of the second control pipeline is connected to the inter-stage connection pipeline, a first end of one of the two second matching pipelines is downstream of the second end of the second control pipeline and is connected to the inter-stage connection pipeline, a second end of one of the two second matching pipelines is connected to a first port of the second cooling chamber, a first end of the other of the two second matching pipelines is connected to a second port of the second cooling chamber, and a second end of the other of the two second matching pipelines is connected to the first heat exchange unit.

[0015] In some exemplary embodiments, the second flow control component is a second control valve or a water pump.

[0016] In some exemplary embodiments, both the bearing housing and the bearing include two, and the stator is located between the two bearing housings.

[0017] In some exemplary embodiments, the second heat exchange unit includes an outdoor heat exchanger, the compression unit includes a primary compression unit and a secondary compression unit, a first port of the primary compression unit is connected to a second port of the first heat exchange unit, a second port of the primary compression unit is connected to a first port of the secondary compression unit through an inter-stage connection pipeline, and a second port of the secondary compression unit is connected to a first port of the outdoor heat exchanger.

[0018] In some exemplary embodiments, the air handling device further includes: two second mating pipelines and a second control pipeline having a second flow control component. The housing, the stator, the rotor shaft, the two bearing sleeves, and the two bearings together enclose a second cooling chamber. The first end of the second control pipeline is connected between the outlet of the first liquid pump and the evaporation chamber, and the second end of the second control pipeline is connected to the inter-stage connection pipeline. One of the two second mating pipelines has its first end downstream of the second end of the second control pipeline and is connected to the inter-stage connection pipeline. The second end of one of the two second mating pipelines is connected to the first port of the second cooling chamber, the first end of the other of the two second mating pipelines is connected to the second port of the second cooling chamber, and the second end of the other of the two second mating pipelines is connected to the evaporation chamber.

[0019] In some exemplary embodiments, the air handling device further includes: an indoor fan disposed corresponding to the indoor heat exchanger; and an outdoor fan disposed corresponding to the second heat exchange unit.

[0020] The control method of the air handling device provided by this application includes:

[0021] Obtain the temperature of the bearing sleeve, and control the first flow control component according to the temperature of the bearing sleeve.

[0022] In some exemplary embodiments, there are two bearing sleeves, and the steps of obtaining the temperature of the bearing sleeve and controlling the first flow control component according to the temperature of the bearing sleeve include:

[0023] Obtain the temperatures t11 and t12 of the two bearing sleeves, and determine whether the first determination condition t11 ≤ the first temperature threshold T1 and t12 ≤ T1 holds;

[0024] Based on the non - establishment of the first determination condition, increase the opening degree of the first flow control component;

[0025] Wherein, the first flow control component is a first control valve.

[0026] In some exemplary embodiments, the control method further includes: obtaining the pressure and temperature of the water vapor in the inter - stage connection pipeline, determining the superheat degree △t of the water vapor in the inter - stage connection pipeline according to the pressure and temperature, and determining whether the second determination condition the first preset value K1 ≤ △t ≤ the second preset value K2 holds;

[0027] Based on the non - establishment of the second determination condition, increase the opening degree of the second flow control component;

[0028] Wherein, the second flow control component is a second control valve.

[0029] In some exemplary embodiments, the control method further includes: obtaining the temperature t2 of the stator, and determining whether a third determination condition t2 ≤ a second temperature threshold T2 is satisfied;

[0030] Based on the third determination condition not being satisfied, increasing the rotational speed of the second liquid pump.

[0031] In some exemplary embodiments, before the step of obtaining the temperature of the bearing housing and controlling the first flow control component according to the temperature of the bearing housing, the control method further includes:

[0032] Operating the first liquid pump and the second liquid pump;

[0033] Opening the fourth flow control component;

[0034] Starting the steam compressor and controlling the steam compressor to operate at a set rotational speed;

[0035] Gradually closing the fourth flow control component according to a set instruction, then obtaining the pressure P inside the outdoor heat exchanger, and determining whether a fourth determination condition P > a preset pressure P1 is satisfied;

[0036] Based on the fourth determination condition not being satisfied, increasing the rotational speed of the steam compressor;

[0037] Based on the fourth determination condition being satisfied, controlling the throttling component to open to a set opening degree, controlling the first flow control component to open to a first set opening degree, and controlling the steam compressor to operate at the current rotational speed;

[0038] Wherein, the first flow control component is a first control valve.

[0039] In some exemplary embodiments, before the step of operating the first liquid pump and the second liquid pump, the control method further includes:

[0040] Obtaining the initial pressure and the initial water level in the evaporation chamber, and controlling the vacuum pumping device and the water injection device connected to the evaporation chamber according to the pressure and the water level to adjust the initial pressure in the evaporation chamber to a set pressure and the initial water level in the evaporation chamber to a set water level.

[0041] In some exemplary embodiments, after the step of obtaining the temperature of the bearing housing and controlling the first flow control component according to the temperature of the bearing housing, the control method further includes: obtaining the indoor temperature t3 and the preset refrigeration temperature t4, and determining whether a fifth determination condition |t3 - t4| ≤ a third temperature threshold T3 is satisfied;

[0042] If the fifth determination condition is satisfied, obtain the pressure fluctuation amplitude of the second port of the secondary compression unit, and determine whether the steam compressor surges as described in the sixth determination condition based on the pressure fluctuation amplitude;

[0043] If the sixth determination condition is satisfied, perform the step of opening the fourth flow control component;

[0044] If the sixth determination condition is not satisfied, maintain the current operating state.

[0045] In some exemplary embodiments, if the fifth determination condition is not satisfied, obtain the indoor air outlet temperature t5, and determine whether the seventh determination condition t5 ≤ t4 is satisfied;

[0046] If the seventh determination condition is satisfied, reduce the rotational speed of the first liquid pump and / or the rotational speed of the indoor fan, and then perform the step of obtaining the temperature of the bearing sleeve and controlling the first flow control component according to the temperature of the bearing sleeve;

[0047] If the seventh determination condition is not satisfied, increase the rotational speed of the first liquid pump and / or the rotational speed of the indoor fan, and then perform the step of obtaining the indoor temperature t3 and the preset refrigeration temperature t4, and determining whether the fifth determination condition |t3 - t4| ≤ the third temperature threshold T3 is satisfied.

[0048] Compared with the related art, for the air handling equipment provided in this application, when operating the steam compressor, after the steam is compressed by the compression unit from the first heat exchange unit, it enters the second heat exchange unit for heat release, causing the temperature of the steam to decrease and form condensed water. The condensed water then passes through the throttling component for pressure reduction and enters the first heat exchange unit for heat absorption, causing the temperature of the condensed water to increase and form steam, and so on in a cycle; during this process, when the first flow control component is opened, a part of the low-temperature fluid in the first heat exchange unit will flow back to the first heat exchange unit along the first control pipeline through the first cooling chamber and the first matching pipeline in sequence. This part of the low-temperature fluid absorbs the heat of the bearing sleeve during the process of passing through the first cooling chamber, achieving cooling of the bearing and the bearing sleeve. This solution does not require an additional cooling device for cooling the steam compressor, and the structure of the air handling equipment is simpler.

[0049] Other features and advantages of this application will be described in the subsequent description, and, in part, will become apparent from the description or will be understood by implementing this application. Other advantages of this application can be realized and obtained through the solutions described in the description and the accompanying drawings. Description of the Drawings

[0050] The accompanying drawings are used to provide an understanding of the technical solution of the present application, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application, and do not constitute a limitation to the technical solution of the present application.

[0051] Figure 1 Structural schematic diagram of an air treatment device provided for some embodiments of the present application;

[0052] Figure 2 For Figure 1 Structural schematic diagram of the water vapor compressor in

[0053] Figure 3 Structural schematic diagram of an air treatment device provided for other embodiments of the present application;

[0054] Figure 4 Flowchart of a control method provided for some embodiments of the present application.

[0055] Wherein, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names in

[0056] 10 First mating pipeline, 20 First control pipeline, 21 First control valve, 30 Second mating pipeline, 40 Second control pipeline, 41 Second control valve, 50 Fourth control pipeline, 51 Fourth control valve, 60 Third mating pipeline, 70 Third control pipeline, 71 Second liquid pump, 100 First heat exchange unit, 110 Evaporation chamber, 130 Indoor heat exchanger, 140 First liquid pump, 150 Second heat exchanger, 200 Water vapor compressor, 210 Housing, 220 Bearing sleeve, 221 First cooling chamber, 230 Stator, 240 Bearing, 250 First-stage compression unit, 260 Second-stage compression unit, 270 Rotor shaft, 280 Second cooling chamber, 290 Inter-stage connection pipeline, 291 Cooling flow path, 300 Second heat exchange unit, 400 Throttling component, 500 Liquid storage tank, 600 Vacuum pumping device, 700 Water injection device, 800 Sprinkler head. Detailed implementation manners

[0057] The present application describes multiple embodiments, but this description is exemplary rather than restrictive, and it is obvious to those of ordinary skill in the art that there can be more embodiments and implementation solutions within the scope covered by the embodiments described in the present application. Although many possible combinations of features are shown in the accompanying drawings and discussed in the detailed implementation manners, many other combination ways of the disclosed features are also possible. Unless specifically restricted, any feature or element of any embodiment can be combined with any other feature or element in any other embodiment, or can replace any other feature or element in any other embodiment.

[0058] This application includes and contemplates combinations with features and elements known to those of ordinary skill in the art. The disclosed embodiments, features, and elements of this application may also be combined with any conventional features or elements to form unique inventive solutions defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive solutions to form another unique inventive solution defined by the claims. Accordingly, it should be understood that any feature shown and / or discussed in this application may be implemented alone or in any suitable combination. Thus, the embodiments are not limited except as defined by the appended claims and their equivalents. Additionally, various modifications and alterations may be made within the scope of the appended claims.

[0059] Moreover, in describing representative embodiments, the specification may have presented the method and / or process as a particular sequence of steps. However, to the extent that the method or process does not depend on the particular sequence of steps described herein, the method or process should not be limited to the recited particular sequence of steps. As will be understood by those of ordinary skill in the art, other sequences of steps are possible. Accordingly, the particular sequence of steps set forth in the specification should not be construed as limiting the claims. Moreover, the claims directed to the method and / or process should not be limited to performing their steps in the order written, as those skilled in the art can readily appreciate that such orders may vary and still remain within the spirit and scope of the embodiments of this application.

[0060] The air handling equipment provided by this application, such as Figures 1 to 3As shown, it includes a first mating pipeline 10, a first control pipeline 20, and a first heat exchange unit 100, a steam compressor 200, a second heat exchange unit 300, and a throttling component 400 that are connected in sequence. At least one of the first mating pipeline 10 and the first control pipeline 20 is provided with a first control valve 21; the steam compressor 200 includes: a housing 210, inside which there is a bearing sleeve 220 and a stator 230, and inside the bearing sleeve 220 there is a first cooling chamber 221; a rotor shaft 270, which is located inside the housing 210 and passes through the bearing sleeve 220 and the stator 230; a bearing 240, which is sleeved between the bearing sleeve 220 and the rotor shaft 270; and a compression unit, which is arranged at the end of the rotor shaft 270; wherein, the first end of the first control pipeline 20 is connected to the first heat exchange unit 100, the second end of the first control pipeline 20 is connected to the first port of the first cooling chamber 221, the first end of the first mating pipeline 10 is connected to the second port of the first cooling chamber 221, and the second end of the first mating pipeline 10 is connected to the first heat exchange unit 100; based on the opening of the first control valve 21, the first control pipeline 20 is arranged to form a fluid flowing from the first heat exchange unit 100 to the first cooling chamber 221, and the first mating pipeline 10 is arranged to form a fluid flowing from the first cooling chamber 221 to the first heat exchange unit 100.

[0061] For this air treatment device, when the steam compressor 200 operates, after the steam is compressed by the compression unit from the first heat exchange unit 100, it enters the second heat exchange unit 300 to release heat, so that the temperature of the steam decreases and condensate water (i.e., medium-temperature and high-pressure condensate water) is formed. Then, the condensate water passes through the throttling component 400 to reduce the pressure and enters the first heat exchange unit 100 to absorb heat, so that the temperature of the condensate water increases and steam is formed, and this cycle continues; during this process, when the first control valve 21 is opened, a part of the low-temperature fluid in the first heat exchange unit 100 will flow along the first control pipeline 20 through the first cooling chamber 221 and the first mating pipeline 10 in sequence and then flow back to the first heat exchange unit 100. This part of the low-temperature fluid absorbs the heat of the bearing sleeve 220 during the process of passing through the first cooling chamber 221, realizing the cooling of the bearing 240 and the bearing sleeve 220. This solution does not require an additional cooling device for cooling the steam compressor 200, and the structure of the air treatment device is simpler.

[0062] It can be, such as Figure 1 and Figure 3 As shown, the first control pipeline 20 is provided with a first control valve 21; or it can be that the first mating pipeline 10 is provided with a first control valve or other ways; the above can all achieve the purpose of this application, and its gist does not deviate from the design concept of the present invention, so it will not be elaborated here and all should fall within the protection scope of this application.

[0063] In some examples, such as Figure 1 andFigure 3 As shown in the figure, the first heat exchange unit 100 includes: an evaporation chamber 110, to which the first port of the steam compressor 200, the second end of the first matching pipeline 10, and the second end of the throttling component 400 are all connected; an indoor heat exchanger 130, which is arranged outside the evaporation chamber 110; and a first liquid pump 140, which is connected to the evaporation chamber 110 and the indoor heat exchanger 130 to form a first circulation path, and the first end of the first control pipeline 20 is connected between the outlet of the first liquid pump 140 and the evaporation chamber 110. Among them, the second end of the first matching pipeline 10 is connected to the top of the evaporation chamber 110, the first port of the steam compressor 200 is connected to the second port at the top of the evaporation chamber 110, and the second end of the throttling component 400 is connected to the first port at the bottom of the evaporation chamber 110. The low-temperature fluid in the first circulation path is low-temperature and low-pressure condensed water. The bottom of the evaporation chamber 110 is low-temperature and low-pressure condensed water, and the upper part of the evaporation chamber 110 is water vapor.

[0064] The first liquid pump 140 is arranged outside the evaporation chamber 110. The outlet of the first liquid pump 140 is connected to the first port of the indoor heat exchanger 130, the inlet of the first liquid pump 140 is connected to the bottom of the evaporation chamber 110, the second port of the indoor heat exchanger 130 is connected to the top of the evaporation chamber 110 and is equipped with a spray head 800. The low-temperature and low-pressure condensed water after throttling by the throttling component 400 enters the evaporation chamber 110 and exchanges heat with the water at the bottom of the evaporation chamber 110. The low-temperature water pumped by the first liquid pump 140 is branched at the outlet of the first liquid pump 140. One part flows towards the indoor heat exchanger 130 to absorb the heat in the room, thereby realizing the cooling of the room. Another part flows back to the evaporation chamber 110 along the first control pipeline 20 through the first cooling chamber 221 and the first matching pipeline 10 in sequence, realizing the cooling of the bearing 240 and the bearing sleeve 220.

[0065] In some examples, as Figure 1 and Figure 3 shown, the air handling equipment further includes: a second heat exchanger 150, which has a first heat exchange flow path and a second heat exchange flow path, and the first circulation path further includes the first heat exchange flow path; a third matching pipeline 60 and a third control pipeline 70. A cooling flow path 291 is formed between the stator 230 and the housing 210. The third matching pipeline 60, the third control pipeline 70, the cooling flow path 291, and the second heat exchange flow path are connected to form a second circulation path, and at least one of the third matching pipeline 60 and the third control pipeline 70 is provided with a second liquid pump 71.

[0066] The cooling flow path 291 is arranged as a spiral channel. The liquid in the second circulation path circulates, absorbs the heat of the stator 230 and the housing 210, and then exchanges heat with the first heat exchange flow path to cool the stator 230 and the housing 210. This solution does not require an additional cooling device for cooling the steam compressor 200, and the structure of the air treatment equipment is simpler.

[0067] It may be that the third mating pipeline 60 is provided with a second liquid pump; or it may be, as Figure 1 and Figure 3 shown, the third control pipeline 70 is provided with a second liquid pump 71 and other means; the above can all achieve the purpose of this application, and its gist does not deviate from the design idea of the present invention, so it will not be elaborated here and should all fall within the protection scope of this application.

[0068] In some examples, as Figure 1 and Figure 3 shown, the air treatment equipment further includes: a fourth control pipeline 50 having a fourth control valve 51. The first end of the fourth control pipeline 50 is connected between the steam compressor 200 and the first port of the second heat exchange unit 300, and the second end of the fourth control pipeline 50 is connected between the steam compressor 200 and the second port of the first heat exchange unit 100.

[0069] When the pressure builds up in the steam compressor 200, by opening the fourth control valve 51, the surge of the steam compressor 200 can be prevented.

[0070] In some examples, as Figure 1 and Figure 3 shown, both the bearing sleeve 220 and the bearing 240 include two. The stator 230 is located between the two bearing sleeves 220. Each bearing sleeve 220 has a first cooling chamber 221. The second heat exchange unit 300 includes an outdoor heat exchanger. The compression unit includes a primary compression unit 250 and a secondary compression unit 260. The first port of the primary compression unit 250 is connected to the second port at the top of the evaporation chamber 110. The second port of the primary compression unit 250 is connected to the first port of the secondary compression unit 260 through an inter-stage connection pipeline 290. The second port of the secondary compression unit 260 is connected to the first port of the outdoor heat exchanger. The first end of the fourth control pipeline 50 is connected between the second port of the secondary compression unit 260 and the first port of the outdoor heat exchanger, and the second end of the fourth control pipeline 50 is connected between the first port of the primary compression unit 250 and the second port of the evaporation chamber 110. Figure 2 The reference numerals a, b, and c in

[0071] In some embodiments, as Figure 1 and Figure 2As shown, the air handling device further includes: a liquid storage tank 500 having a liquid inlet, a first liquid outlet, and a third liquid outlet. The liquid inlet is connected to the second port of the outdoor heat exchanger, and the first liquid outlet is connected to the first port of the throttling member 400; two second mating pipelines 30 and a second control pipeline 40 having a second control valve 41. The housing 210, the stator 230, the rotor shaft 270, two bearing sleeves 220, and two bearings 240 jointly enclose a second cooling chamber 280. The first end of the second control pipeline 40 is connected to the third liquid outlet, and the second end of the second control pipeline 40 is connected to the inter-stage connection pipeline 290. The first end of one of the two second mating pipelines 30 is downstream of the second end of the second control pipeline 40 and is connected to the inter-stage connection pipeline 290. The second end of one of the two second mating pipelines 30 is connected to the first port of the second cooling chamber 280. The first end of the other of the two second mating pipelines 30 is connected to the second port of the second cooling chamber 280, and the second end of the other of the two second mating pipelines 30 is connected to the evaporation chamber 110.

[0072] The medium-temperature and high-pressure condensate water in the outdoor heat exchanger enters the liquid storage tank 500 from the liquid inlet. Then, a part of the medium-temperature and high-pressure condensate water flows from the first liquid outlet through the throttling member 400 to the evaporation chamber 110; another part of the medium-temperature and high-pressure condensate water flows from the third liquid outlet through the second control pipeline 40 to the inter-stage connection pipeline 290 for flashing and inter-stage cooling between the first-stage compression unit 250 and the second-stage compression unit 260, so that the superheat degree of the water vapor in the inter-stage connection pipeline 290 is maintained at 1°C to 2°C. This can prevent the temperature of the water vapor compressed by the second-stage compression unit 260 from being too high and is beneficial to improving the performance of the water vapor compressor 200; a part of the water vapor in the inter-stage connection pipeline 290 that has undergone inter-stage cooling flows to the second-stage compression unit 260 for further compression, and another part flows back to the evaporation chamber 110 after passing through the two second mating pipelines 30 and the second cooling chamber 280. During the process of this another part of the water vapor passing through the second cooling chamber 280, it absorbs the heat of the housing 210, the stator 230, and the rotor shaft 270, realizing the cooling of the housing 210, the stator 230, and the rotor shaft 270. This solution does not require an additional cooling device for cooling the water vapor compressor 200, and the structure of the air handling device is simpler.

[0073] In some other embodiments, such as Figure 2 and Figure 3As shown in the figure, the air handling device further includes: two second mating pipelines 30 and a second control pipeline 40 with a second control valve 41. The housing 210, the stator 230, the rotor shaft 270, two bearing sleeves 220, and two bearings 240 together enclose a second cooling chamber 280. The first end of the second control pipeline 40 is connected between the outlet of the first liquid pump 140 and the first port of the indoor heat exchanger 130. The second end of the second control pipeline 40 is connected to the inter-stage connection pipeline 290. The first end of one of the two second mating pipelines 30 is downstream of the second end of the second control pipeline 40 and is connected to the inter-stage connection pipeline 290. The second end of one of the two second mating pipelines 30 is connected to the first port of the second cooling chamber 280. The first end of the other of the two second mating pipelines 30 is connected to the second port of the second cooling chamber 280. The second end of the other of the two second mating pipelines 30 is connected to the evaporation chamber 110.

[0074] The low-temperature and low-pressure condensed water pumped by the first liquid pump 140 is split at the outlet of the first liquid pump 140. A part of it flows towards the indoor heat exchanger 130 to absorb the heat in the room, thereby realizing cooling of the room. Another part flows back to the evaporation chamber 110 along the first control pipeline 20 through the first cooling chamber 221 and the first mating pipeline 10 in sequence, realizing cooling of the bearings 240 and the bearing sleeves 220. Another part flows through the second control pipeline 40 to the inter-stage connection pipeline 290 for flashing, and inter-stage cooling is carried out between the first-stage compression unit 250 and the second-stage compression unit 260, so that the superheat degree of the water vapor in the inter-stage connection pipeline 290 is maintained at 1°C to 2°C. This can prevent the temperature of the water vapor compressed by the second-stage compression unit 260 from being too high, which is beneficial to improving the performance of the water vapor compressor 200. A part of the water vapor in the inter-stage connection pipeline 290 that has undergone inter-stage cooling flows towards the second-stage compression unit 260 for further compression. Another part flows back to the evaporation chamber 110 after passing through the two second mating pipelines 30 and the second cooling chamber 280. During the process of this another part of the water vapor passing through the second cooling chamber 280, it absorbs the heat of the housing 210, the stator 230, and the rotor shaft 270, realizing cooling of the housing 210, the stator 230, and the rotor shaft 270. This solution does not require an additional cooling device for cooling the water vapor compressor 200, and the structure of the air handling device is simpler.

[0075] Further, as Figure 3 shown, the air handling device further includes: a liquid storage tank 500. The liquid storage tank 500 has a liquid inlet and a first liquid outlet. The liquid inlet is connected to the second port of the outdoor heat exchanger. The first liquid outlet is connected to the first port of the throttling component 400.

[0076] In some embodiments, the air handling device further includes: an indoor fan, which is correspondingly arranged with the indoor heat exchanger 130; and an outdoor fan, which is correspondingly arranged with the outdoor heat exchanger. Additionally, as Figure 1 and Figure 3 shown, the evaporation chamber 110 is connected with a vacuum pumping device 600 and a water injection device 700. The water injection device 700 includes a fifth control valve, and the vacuum pumping device 600 includes a vacuum pump.

[0077] In this application, the first ports are all inlets and the second ports are all outlets. As Figure 2 shown, the primary compression unit 250 and the secondary compression unit 260 are symmetrically arranged, and the housing 210 is made by 3D metal printing technology.

[0078] Of course, the first control valve 21, the second control valve 41, and the fourth control valve 51 can also be replaced with water pumps, and the purpose of this application can also be achieved. Without departing from the design concept of the present invention, the details are not elaborated herein and all should fall within the protection scope of this application.

[0079] The control method of the air handling device provided in this application includes:

[0080] Obtaining the temperature of the bearing sleeve 220, and controlling the first control valve 21 according to the temperature of the bearing sleeve 220 to better achieve the cooling of the bearing sleeve 220 and the bearing 240.

[0081] In some examples, as Figure 4 shown, there are two bearing sleeves 220. The steps of obtaining the temperature of the bearing sleeve 220 and controlling the first control valve 21 according to the temperature of the bearing sleeve 220 include:

[0082] Obtaining the temperatures t11 and t12 of the two bearing sleeves 220, and judging whether the first judgment condition t11 ≤ the first temperature threshold T1 and t12 ≤ T1 holds;

[0083] Based on the non - establishment of the first judgment condition, increasing the opening degree of the first control valve 21.

[0084] When the opening degree of the first control valve 21 increases, the amount of low - temperature and low - pressure condensed water passing through the first control valve 21 increases, so as to improve the cooling effect of the bearing sleeve 220 and the bearing 240.

[0085] In some examples, as Figure 4 shown, the control method further includes: obtaining the pressure and temperature of the water vapor in the inter - stage connection pipeline 290, determining the superheat degree △t of the water vapor in the inter - stage connection pipeline 290 according to the pressure and temperature, and judging whether the second judgment condition the first preset value K1 ≤ △t ≤ the second preset value K2 holds;

[0086] Based on the non - establishment of the second determination condition, increase the opening degree of the second control valve 41.

[0087] When the opening degree of the second control valve 41 increases, the amount of condensed water passing through the second control valve 41 increases, which can improve the temperature - lowering effect of the inter - stage connecting pipeline 290. K1 is greater than 0 °C. For example, if K1 is set to 1 °C and K2 is set to 2 °C, the temperature of the water vapor after being compressed by the secondary compression unit 260 is not very high, which can better ensure the performance of the water vapor compressor 200.

[0088] In some examples, such as Figure 4 shown, the control method further includes: obtaining the temperature t2 of the stator 230 and determining whether the third determination condition t2 ≤ the second temperature threshold T2 is established;

[0089] Based on the non - establishment of the third determination condition, increase the rotation speed of the second liquid pump 71.

[0090] When the rotation speed of the second liquid pump 71 increases, the temperature - lowering effect of the stator 230 can be improved.

[0091] In some examples, such as Figure 4 shown, before the step of obtaining the temperature of the bearing sleeve 220 and controlling the first control valve 21 according to the temperature of the bearing sleeve 220, the control method further includes:

[0092] Running the first liquid pump 140 and the second liquid pump 71;

[0093] Opening the fourth control valve 51;

[0094] Starting the water vapor compressor 200 and controlling the water vapor compressor 200 to run at a set rotation speed;

[0095] Gradually closing (such as slowly closing) the fourth control valve 51 according to a set command, then obtaining the pressure P inside the outdoor heat exchanger and determining whether the fourth determination condition P > the preset pressure P1 is established;

[0096] Based on the non - establishment of the fourth determination condition, increase the rotation speed of the water vapor compressor 200;

[0097] Based on the establishment of the fourth determination condition, control the throttling component 400 to open to a set opening degree, control the first control valve 21 to open to a first set opening degree, control the second control valve 41 to open to a second set opening degree, and control the water vapor compressor 200 to run at the current rotation speed.

[0098] Under normal circumstances: when the first control valve 21 is opened to the first set opening degree, t11 ≤ T1 and t12 ≤ T1 are satisfied; when the second control valve 41 is opened to the second set opening degree, K1 ≤ △t ≤ K2 is satisfied. At this time, the operating performance of the air - handling equipment is better.

[0099] In some examples, such as Figure 4 as shown, before the step of operating the first liquid pump 140 and the second liquid pump 71, the control method further includes:

[0100] Obtaining the initial pressure and the initial water level in the evaporation chamber 110, and controlling the vacuum pumping device 600 and the water injection device 700 connected to the evaporation chamber 110 according to the pressure and the water level, so as to adjust the initial pressure in the evaporation chamber 110 to a set pressure and the initial water level in the evaporation chamber 110 to a set water level.

[0101] That is: obtaining the initial pressure in the evaporation chamber 110, judging whether the initial pressure in the evaporation chamber 110 is lower than the set pressure, and based on the initial pressure in the evaporation chamber 110 being lower than the set pressure, turning on the vacuum pumping device 600 for vacuum pumping, and turning off the vacuum pumping device 600 when the initial pressure in the evaporation chamber 110 reaches the set pressure; obtaining the initial water level in the evaporation chamber 110, judging whether the initial water level in the evaporation chamber 110 is lower than the set water level, and based on the initial water level in the evaporation chamber 110 being lower than the set water level, turning on the fifth control valve, and turning off the fifth control valve when the initial water level in the evaporation chamber 110 reaches the set water level.

[0102] In some examples, such as Figure 4 as shown, after the step of obtaining the temperature of the bearing sleeve 220 and controlling the first control valve 21 according to the temperature of the bearing sleeve 220, the control method further includes: obtaining the indoor temperature t3 and the preset refrigeration temperature t4, and judging whether the fifth determination condition |t3 - t4| ≤ the third temperature threshold T3 is established;

[0103] Based on the fifth determination condition being established, obtaining the pressure fluctuation amplitude of the second port of the two-stage compression unit 260, and judging whether the sixth determination condition the steam compressor 200 surges (such as the pressure fluctuation amplitude > the preset pressure fluctuation amplitude) is established according to the pressure fluctuation amplitude;

[0104] Based on the sixth determination condition being established, performing the step of turning on the fourth control valve 51 (improving the pressure buildup in the steam compressor 200 and avoiding the continuous surge of the steam compressor 200);

[0105] Based on the sixth determination condition not being established, maintaining the current operating state.

[0106] In some examples, such as Figure 4 as shown, based on the fifth determination condition not being established, obtaining the indoor outlet air temperature t5, and judging whether the seventh determination condition t5 ≤ t4 is established;

[0107] Based on the establishment of the seventh determination condition, the rotation speed of the first liquid pump 140 and / or the rotation speed of the indoor fan are reduced (to quickly adjust the indoor temperature t3 to the preset cooling temperature t4), and then the step of obtaining the temperature of the bearing sleeve 220 and controlling the first control valve 21 according to the temperature of the bearing sleeve 220 is executed;

[0108] Based on the non - establishment of the seventh determination condition, the rotation speed of the first liquid pump 140 and / or the rotation speed of the indoor fan are increased (to quickly adjust the indoor temperature t3 to the preset cooling temperature t4), and then the step of obtaining the indoor temperature t3 and the preset cooling temperature t4 and determining whether the fifth determination condition |t3 - t4| ≤ the third temperature threshold T3 is established is executed.

[0109] In one embodiment, as Figure 4 shown, a control method for an air - handling device includes:

[0110] Obtain the initial pressure and the initial water level in the evaporation chamber 110;

[0111] Based on the initial pressure in the evaporation chamber 110 being lower than the set pressure, turn on the vacuum pumping device 600 to pump vacuum, and turn off the vacuum pumping device 600 when the initial pressure in the evaporation chamber 110 reaches the set pressure;

[0112] Based on the initial water level in the evaporation chamber 110 being lower than the set water level, turn on the fifth control valve, and turn off the fifth control valve when the initial water level in the evaporation chamber 110 reaches the set water level;

[0113] Control the first liquid pump 140 to operate at the first set speed and control the second liquid pump 71 to operate at the second set speed;

[0114] Turn on the fourth control valve 51;

[0115] Turn on the steam compressor 200 and control the steam compressor 200 to run to the set rotation speed;

[0116] Gradually close the fourth control valve 51 according to the set instruction;

[0117] Obtain the pressure P inside the outdoor heat exchanger and determine whether the fourth determination condition P > P1 is established;

[0118] Based on the non - establishment of the fourth determination condition, increase the rotation speed of the steam compressor 200, and then execute the step of obtaining the pressure P inside the outdoor heat exchanger and determining whether the fourth determination condition P > P1 is established;

[0119] Based on the establishment of the fourth determination condition, control the throttling component 400 to open to the set opening degree, control the first control valve 21 to open to the first set opening degree, control the second control valve 41 to open to the second set opening degree, and control the steam compressor 200 to run at the current rotation speed;

[0120] Obtain the pressure and temperature of the water vapor in the inter-stage connecting pipeline 290, determine the superheat degree Δt of the water vapor in the inter-stage connecting pipeline 290 according to the pressure and temperature, and judge whether the second determination condition K1 ≤ Δt ≤ K2 holds;

[0121] Based on the non - establishment of the second determination condition, increase the opening degree of the second control valve 41, and then execute the steps of obtaining the pressure and temperature of the water vapor in the inter - stage connecting pipeline 290, determining the superheat degree Δt of the water vapor in the inter - stage connecting pipeline 290 according to the pressure and temperature, and judging whether the second determination condition K1 ≤ Δt ≤ K2 holds;

[0122] Based on the establishment of the second determination condition, obtain the temperature t2 of the stator 230, and judge whether the third determination condition t2 ≤ T2 holds;

[0123] Based on the non - establishment of the third determination condition, increase the rotational speed of the second liquid pump 71, and then execute the steps of obtaining the temperature t2 of the stator 230 and judging whether the third determination condition t2 ≤ T2 holds;

[0124] Based on the establishment of the third determination condition, obtain the temperatures t11 and t12 of the two bearing sleeves 220, and judge whether the first determination condition t11 ≤ T1 and t12 ≤ T1 holds;

[0125] Based on the non - establishment of the first determination condition, increase the opening degree of the first control valve 21, and then execute the steps of obtaining the temperatures t11 and t12 of the two bearing sleeves 220 and judging whether the first determination condition t11 ≤ T1 and t12 ≤ T1 holds;

[0126] Based on the establishment of the first determination condition, obtain the indoor temperature t3 and the preset refrigeration temperature t4, and judge whether the fifth determination condition |t3 - t4| ≤ the third temperature threshold T3 holds;

[0127] Based on the establishment of the fifth determination condition, obtain the pressure fluctuation amplitude of the second port of the two - stage compression unit 260, and judge whether the sixth determination condition that the water vapor compressor 200 surges (i.e., the pressure fluctuation amplitude > the preset pressure fluctuation amplitude) holds according to the pressure fluctuation amplitude;

[0128] Based on the establishment of the sixth determination condition, execute the step of opening the fourth control valve 51 (to improve the pressure buildup in the water vapor compressor 200 and avoid the continuous surge of the water vapor compressor 200);

[0129] Based on the non - establishment of the sixth determination condition, execute the steps of obtaining the pressure and temperature of the water vapor in the inter - stage connecting pipeline 290, determining the superheat degree Δt of the water vapor in the inter - stage connecting pipeline 290 according to the pressure and temperature, and judging whether the second determination condition K1 ≤ Δt ≤ K2 holds;

[0130] Based on the non - establishment of the fifth determination condition, obtain the indoor outlet air temperature t5, and determine whether the seventh determination condition t5 ≤ t4 is established;

[0131] Based on the establishment of the seventh determination condition, reduce the rotational speed of the first liquid pump 140 and / or the rotational speed of the indoor fan (to quickly adjust the indoor temperature t3 to the preset refrigeration temperature t4), then execute the steps of obtaining the pressure and temperature of the water vapor in the inter - stage connection pipeline 290, determining the superheat degree △t of the water vapor in the inter - stage connection pipeline 290 according to the pressure and temperature, and determining whether the second determination condition K1 ≤ △t ≤ K2 is established;

[0132] Based on the non - establishment of the seventh determination condition, increase the rotational speed of the first liquid pump 140 and / or the rotational speed of the indoor fan (to quickly adjust the indoor temperature t3 to the preset refrigeration temperature t4), then execute the steps of obtaining the indoor temperature t3 and the preset refrigeration temperature t4, and determining whether the fifth determination condition |t3 - t4| ≤ the third temperature threshold T3 is established.

[0133] Of course, one or more of the first control valve 21, the second control valve 41, and the fourth control valve 51 can be replaced by a water pump. The water pump realizes flow control by changing the rotational speed, and can also achieve the purpose of this application. Its gist does not deviate from the design concept of the present invention, so it will not be elaborated here and should also fall within the protection scope of this application.

[0134] In summary, for the air - handling equipment provided in this application, when the water - vapor compressor operates, the water vapor is compressed by the compression unit after passing through the first heat - exchange unit, and then enters the second heat - exchange unit for heat release, causing the temperature of the water vapor to decrease and form condensed water. The condensed water then passes through the throttling component for pressure reduction and enters the first heat - exchange unit for heat absorption, causing the temperature of the condensed water to increase and form water vapor, and so on in a cycle; during this process, when the first control valve is opened, a part of the low - temperature fluid in the first heat - exchange unit will flow back to the first heat - exchange unit along the first control pipeline through the first cooling chamber and the first mating pipeline in sequence. This part of the low - temperature fluid absorbs the heat of the bearing sleeve during the process of passing through the first cooling chamber, realizing the cooling of the bearing and the bearing sleeve. This solution does not require an additional cooling device for cooling the water - vapor compressor, and the structure of the air - handling equipment is simpler.

[0135] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "the "mouth" - shaped structure", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0136] In the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0137] Those of ordinary skill in the art can understand that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, and their appropriate combinations. In the hardware implementation, the division between the functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be executed by several physical components in cooperation. Some components or all components may be implemented as software executed by a processor, such as a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. The computer storage medium includes, but is not limited to, RAK, ROK, EEPROK, flash memory or other memory technologies, CD-ROK, digital versatile disc (DVD) or other optical disc storage, magnetic cassette, tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, the communication medium generally contains computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium.

Claims

1. An air treatment device, characterized in that, It includes a first matching pipeline, a first control pipeline, and a first heat exchange unit, a steam compressor, a second heat exchange unit, and a throttling component connected in sequence. At least one of the first matching pipeline and the first control pipeline is provided with a first flow control component; the steam compressor includes: A housing, inside which there is a bearing sleeve and a stator, and a first cooling chamber is arranged inside the bearing sleeve; A rotor shaft, located inside the housing and passing through the bearing sleeve and the stator; Bearings, sleeved between the bearing sleeve and the rotor shaft; and A compression unit, arranged at the end of the rotor shaft; Wherein, the first end of the first control pipeline is connected to the first heat exchange unit, the second end of the first control pipeline is connected to the first port of the first cooling chamber, the first end of the first matching pipeline is connected to the second port of the first cooling chamber, and the second end of the first matching pipeline is connected to the first heat exchange unit; Based on the opening of the first flow control component, the first control pipeline is arranged to form a fluid flowing from the first heat exchange unit to the first cooling chamber, and the first matching pipeline is arranged to form a fluid flowing from the first cooling chamber to the first heat exchange unit.

2. The air treatment device according to claim 1, wherein, The first heat exchange unit includes: An evaporation chamber, to which the first port of the steam compressor, the second end of the first matching pipeline, and the second end of the throttling component are all connected; An indoor heat exchanger, arranged outside the evaporation chamber; and A first liquid pump, connected to the evaporation chamber and the indoor heat exchanger to form a first circulation path, and the first end of the first control pipeline is connected between the outlet of the first liquid pump and the evaporation chamber.

3. The air treatment device according to claim 2, characterized in that, It further includes: A second heat exchanger, having a first heat exchange flow path and a second heat exchange flow path, and the first circulation path further includes the first heat exchange flow path; A third matching pipeline and a third control pipeline, a cooling flow path is formed between the stator and the housing, and the third matching pipeline, the third control pipeline, the cooling flow path, and the second heat exchange flow path are connected to form a second circulation path, and at least one of the third matching pipeline and the third control pipeline is provided with a second liquid pump.

4. The air treatment device according to any one of claims 1 to 3, characterized in that It further includes: A fourth control pipeline with a fourth flow control component, the first end of the fourth control pipeline is connected between the steam compressor and the first port of the second heat exchange unit, and the second end of the fourth control pipeline is connected between the steam compressor and the second port of the first heat exchange unit.

5. The air treatment device according to any one of claims 1 to 3, wherein Both the bearing sleeve and the bearings include two, and the stator is located between the two bearing sleeves; The second heat exchange unit includes an outdoor heat exchanger, the compression unit includes a primary compression unit and a secondary compression unit, the first port of the primary compression unit is connected to the second port of the first heat exchange unit, the second port of the primary compression unit is connected to the first port of the secondary compression unit through an inter-stage connection pipeline, and the second port of the secondary compression unit is connected to the first port of the outdoor heat exchanger.

6. The air treatment device according to claim 5, characterized in that, It further includes: A liquid storage tank, the liquid storage tank having a liquid inlet, a first liquid outlet and a third liquid outlet, the liquid inlet being connected to a second port of the outdoor heat exchanger, the first liquid outlet being connected to the throttling component; Two second matching pipelines and a second control pipeline having a second flow control component, the housing, the stator, the rotor shaft, the two bearing sleeves and the two bearings jointly enclose a second cooling chamber, a first end of the second control pipeline is connected to the third liquid outlet, a second end of the second control pipeline is connected to the inter-stage connection pipeline, a first end of one of the two second matching pipelines is downstream of the second end of the second control pipeline and is connected to the inter-stage connection pipeline, a second end of one of the two second matching pipelines is connected to a first port of the second cooling chamber, a first end of the other of the two second matching pipelines is connected to a second port of the second cooling chamber, and a second end of the other of the two second matching pipelines is connected to the first heat exchange unit.

7. The air handling device according to claim 2, wherein There are two bearing sleeves and two bearings, and the stator is located between the two bearing sleeves; The second heat exchange unit includes an outdoor heat exchanger, the compression unit includes a primary compression unit and a secondary compression unit, a first port of the primary compression unit is connected to a second port of the first heat exchange unit, a second port of the primary compression unit is connected to a first port of the secondary compression unit through an inter-stage connection pipeline, and a second port of the secondary compression unit is connected to a first port of the outdoor heat exchanger.

8. The air treatment device according to claim 7, characterized in that Further comprising: Two second matching pipelines and a second control pipeline having a second flow control component, the housing, the stator, the rotor shaft, the two bearing sleeves and the two bearings jointly enclose a second cooling chamber, a first end of the second control pipeline is connected between an outlet of the first liquid pump and the evaporation chamber, a second end of the second control pipeline is connected to the inter-stage connection pipeline, a first end of one of the two second matching pipelines is downstream of the second end of the second control pipeline and is connected to the inter-stage connection pipeline, a second end of one of the two second matching pipelines is connected to a first port of the second cooling chamber, a first end of the other of the two second matching pipelines is connected to a second port of the second cooling chamber, and a second end of the other of the two second matching pipelines is connected to the evaporation chamber.

9. The air handling device according to claim 2, wherein, Further comprising: An indoor fan, correspondingly arranged with the indoor heat exchanger; And An outdoor fan, correspondingly arranged with the second heat exchange unit.

10. A control method for an air handling device according to any one of claims 1 to 9, characterized in that, Including: Obtaining the temperature of the bearing sleeve and controlling the first flow control component according to the temperature of the bearing sleeve.

11. The control method according to claim 10, wherein, There are two bearing sleeves, and the step of obtaining the temperature of the bearing sleeve and controlling the first flow control component according to the temperature of the bearing sleeve includes: Obtaining the temperatures t11 and t12 of the two bearing sleeves, and determining whether a first determination condition t11 ≤ a first temperature threshold T1 and t12 ≤ T1 is satisfied; If the first determination condition is not satisfied, increase the opening degree of the first flow control component; Wherein, the first flow control component is the first control valve.

12. The control method according to claim 10, wherein It further includes: Obtain the pressure and temperature of the water vapor in the inter-stage connecting pipeline, determine the superheat degree △t of the water vapor in the inter-stage connecting pipeline according to the pressure and temperature, and judge whether the second determination condition the first preset value K1 ≤ △t ≤ the second preset value K2 is satisfied; If the second determination condition is not satisfied, increase the opening degree of the second flow control component; Wherein, the second flow control component is the second control valve.

13. The control method according to claim 10, wherein It further includes: Obtain the temperature t2 of the stator, and judge whether the third determination condition t2 ≤ the second temperature threshold T2 is satisfied; If the third determination condition is not satisfied, increase the rotational speed of the second liquid pump.

14. The control method according to any one of claims 10 to 13, characterized in that, Before the step of obtaining the temperature of the bearing sleeve and controlling the first flow control component according to the temperature of the bearing sleeve, the control method further includes: Operate the first liquid pump and the second liquid pump; Open the fourth flow control component; Start the water vapor compressor and control the water vapor compressor to run to the set rotational speed; Gradually close the fourth flow control component according to the set command, then obtain the pressure P inside the outdoor heat exchanger, and judge whether the fourth determination condition P > the preset pressure P1 is satisfied; If the fourth determination condition is not satisfied, increase the rotational speed of the water vapor compressor; If the fourth determination condition is satisfied, control the throttling component to open to the set opening degree, control the first flow control component to open to the first set opening degree, and control the water vapor compressor to run at the current rotational speed; Wherein, the first flow control component is the first control valve.

15. The control method according to claim 14, characterized in that, Before the step of operating the first liquid pump and the second liquid pump, the control method further includes: Obtain the initial pressure and initial water level in the evaporation chamber, and control the vacuum pumping device and the water injection device connected to the evaporation chamber according to the pressure and water level to adjust the initial pressure in the evaporation chamber to the set pressure and the initial water level in the evaporation chamber to the set water level.

16. The control method according to claim 14, wherein After the step of obtaining the temperature of the bearing sleeve and controlling the first flow control component according to the temperature of the bearing sleeve, the control method further includes: Obtain the indoor temperature t3 and the preset refrigeration temperature t4, and judge whether the fifth determination condition |t3 - t4| ≤ the third temperature threshold T3 is satisfied; If the fifth determination condition is satisfied, obtain the pressure fluctuation amplitude of the second port of the two-stage compression unit, and judge whether the sixth determination condition the water vapor compressor surges is satisfied according to the pressure fluctuation amplitude; If the sixth determination condition is satisfied, execute the step of opening the fourth flow control component; If the sixth determination condition is not satisfied, maintain the current operating state.

17. The control method according to claim 16, wherein, If the fifth determination condition is not satisfied, obtain the indoor air outlet temperature t5, and judge whether the seventh determination condition t5 ≤ t4 is satisfied; If the seventh determination condition is satisfied, reduce the rotational speed of the first liquid pump and / or the rotational speed of the indoor fan, and then perform the steps of obtaining the temperature of the bearing sleeve and controlling the first flow control component according to the temperature of the bearing sleeve; If the seventh determination condition is not satisfied, increase the rotational speed of the first liquid pump and / or the rotational speed of the indoor fan, and then perform the steps of obtaining the indoor temperature t3 and the preset refrigeration temperature t4, and determining whether the fifth determination condition |t3 - t4| ≤ the third temperature threshold T3 is satisfied.

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