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 with a first flow control component, and a first heat exchange unit, a water vapor compressor, a second heat exchange unit and a throttling component which are connected in sequence; 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 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; wherein the first end of the first control pipeline is connected between the second heat exchange unit and the throttling component, the second end of the first control pipeline is connected with a first port of the first cooling cavity, the first end of the first matching pipeline is connected with a second port of the first cooling cavity, and the second end of the first matching pipeline is connected with 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, and air, 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 the problem of ozone layer depletion has been solved, it will bring a strong greenhouse effect. Under 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 relatively large potential safety hazards. Water (R718) is non-toxic, non-flammable, and non-explosive, is ubiquitous 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, and GWP (global warming potential) = 0. However, air treatment devices using water as a refrigerant are all additionally 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, 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 between the second heat exchange unit and the throttling component, 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.

[0007] In some exemplary embodiments, there are two bearing sleeves and two bearings, and the stator is located between the two bearing sleeves.

[0008] In some exemplary embodiments, the second heat exchange unit includes an outdoor heat exchanger, the compression unit includes a first-stage compression unit and a second-stage compression unit. The first port of the first-stage compression unit is connected to the second port of the first heat exchange unit, the second port of the first-stage compression unit is connected to the first port of the second-stage compression unit through an inter-stage connection pipeline, and the second port of the second-stage compression unit is connected to the first port of the outdoor heat exchanger.

[0009] In some exemplary embodiments, the air treatment equipment further includes: a liquid storage tank, which has a liquid inlet, a first liquid outlet, and a second liquid outlet. The liquid inlet is connected to the second port of the outdoor heat exchanger, the first liquid outlet is connected to the throttling component, and the second liquid outlet is connected to the first end of the first control pipeline.

[0010] 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 liquid storage tank further has a third liquid outlet. 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 to the third liquid outlet, the second end of the second control pipeline is connected to the inter-stage connection pipeline. One of the first ends of the two second mating pipelines is downstream of the second end of the second control pipeline and is connected to the inter-stage connection pipeline. One of the second ends of the two second mating pipelines is connected to the first port of the second cooling chamber. The other of the first ends of the two second mating pipelines is connected to the second port of the second cooling chamber. The other of the second ends of the two second mating pipelines is connected to the first heat exchange unit.

[0011] In some exemplary embodiments, the air handling device further includes: a fourth control pipeline having a fourth flow control component. The first end of the fourth control pipeline is connected between the second port of the second-stage compression unit and the first port of the outdoor heat exchanger. The second end of the fourth control pipeline is connected between the first port of the first-stage compression unit and the second port of the first heat exchange unit.

[0012] In some exemplary embodiments, the first heat exchange unit includes: an evaporation chamber, to which the first port of the first-stage compression unit, the second end of the first mating pipeline, and the second end of the throttling component are all connected; a first heat exchanger disposed in the evaporation chamber; an indoor heat exchanger disposed outside the evaporation chamber; and a first liquid pump disposed outside the evaporation chamber and connected to the first heat exchanger and the indoor heat exchanger to form a first circulation path.

[0013] In some exemplary embodiments, the air handling device further includes: a second heat exchanger having a first heat exchange flow path and a second heat exchange flow path. The first circulation path further includes the first heat exchange flow path; a third mating pipeline and a third control pipeline. A cooling flow path is formed between the stator and the housing. The third mating pipeline, the third control pipeline, the cooling flow path, and the second heat exchange flow path are connected to form a second circulation path. At least one of the third mating pipeline and the third control pipeline is provided with a second liquid pump.

[0014] In some exemplary embodiments, a cooling flow path is formed between the stator and the housing. The first heat exchange unit includes: an evaporation chamber to which a first port of the first-stage compression unit, a second end of the first mating pipeline, and a second end of the throttling member are all connected; a first heat exchanger disposed in the evaporation chamber; an indoor heat exchanger disposed outside the evaporation chamber; and a first liquid pump disposed outside the evaporation chamber and connected to the cooling flow path, the first heat exchanger, and the indoor heat exchanger to form a third circulation path.

[0015] In some exemplary embodiments, the air handling device further includes: an indoor fan disposed corresponding to the first heat exchange unit; and an outdoor fan disposed corresponding to the second heat exchange unit.

[0016] The control method of the air handling device provided by the embodiment of the present invention includes:

[0017] Obtain the temperature t1 of the bearing sleeve, and control the first flow control component according to the temperature of the bearing sleeve.

[0018] In some exemplary embodiments, there are two bearing sleeves. 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:

[0019] 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;

[0020] Based on the non - establishment of the first determination condition, increase the opening degree of the first flow control component;

[0021] Wherein, the first flow control component is a first control valve.

[0022] 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;

[0023] Based on the non - establishment of the second determination condition, increase the opening degree of the second flow control component;

[0024] Wherein, the second flow control component is a second control valve.

[0025] In some exemplary embodiments, the control method further includes: obtaining the temperature t2 of the stator, and determining whether the third determination condition t2 ≤ the second temperature threshold T2 holds;

[0026] Based on the non - establishment of the third determination condition, increase the rotational speed of the first liquid pump and / or the second liquid pump.

[0027] In some exemplary embodiments, 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:

[0028] Operate the first liquid pump and the second liquid pump;

[0029] Open the fourth flow control component;

[0030] Start the steam compressor and control the steam compressor to run to a set rotational speed;

[0031] Gradually close the fourth flow control component according to a set command, then obtain the pressure P inside the outdoor heat exchanger, and determine whether the fourth determination condition P > preset pressure P1 is established;

[0032] Based on the non - establishment of the fourth determination condition, increase the rotational speed of the steam compressor;

[0033] Based on the establishment of the fourth determination condition, control the throttling component to open to a set opening degree, control the first flow control component to open to a first set opening degree, and control the steam compressor to run at the current rotational speed;

[0034] Wherein, the first flow control component is a first control valve.

[0035] In some exemplary embodiments, before the step of operating the first liquid pump and the second liquid pump, the control method further includes:

[0036] Obtain the initial pressure and the 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 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.

[0037] In some exemplary embodiments, 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:

[0038] Operate the first liquid pump;

[0039] Open the fourth flow control component;

[0040] Start the steam compressor and control the steam compressor to run to a set rotational speed;

[0041] Gradually close the fourth flow control component according to the set instruction, then obtain the pressure P inside the outdoor heat exchanger, and determine whether the fourth determination condition P > preset pressure P1 holds;

[0042] Based on the non - establishment of the fourth determination condition, increase the rotational speed of the steam compressor;

[0043] Based on the establishment of the fourth determination condition, control the throttle 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 steam compressor to operate at the current rotational speed;

[0044] Wherein, the first flow control component is a first control valve.

[0045] In some exemplary embodiments, before the step of operating the first liquid pump, the control method further includes:

[0046] 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.

[0047] In some exemplary embodiments, 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 determine whether the fifth determination condition |t3 - t4| ≤ third temperature threshold T3 holds;

[0048] Based on the establishment of the fifth determination condition, obtain the pressure fluctuation amplitude at the second port of the secondary compression unit, and determine whether the sixth determination condition that the steam compressor surges holds according to the pressure fluctuation amplitude;

[0049] Based on the establishment of the sixth determination condition, execute the step of opening the fourth flow control component;

[0050] Based on the non - establishment of the sixth determination condition, maintain the current operating state.

[0051] In some exemplary embodiments, 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 holds;

[0052] Based on the establishment of the seventh determination condition, reduce the rotational speed of the first liquid pump and / or the rotational speed of the indoor fan, and then execute the step of obtaining the indoor temperature t3 and the preset refrigeration temperature t4, and determine whether the fifth determination condition |t3 - t4| ≤ third temperature threshold T3 holds;

[0053] 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 air blower, 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.

[0054] Compared with the related art, for the air handling device provided in this application, when operating the water vapor compressor, after the water vapor is compressed by the compression unit from the first heat exchange unit, it enters the second heat exchange unit for heat release, so that the temperature of the water vapor decreases and condensed water is formed. After the condensed water is depressurized through the throttling component, it enters the first heat exchange unit for heat absorption, so that the temperature of the condensed water increases and water vapor is formed, and so on; during this process, a part of the medium-temperature and high-pressure condensed water flowing out of the second heat exchange unit will flow along the first control pipeline through the first cooling chamber to the first heat exchange unit. This part of the medium-temperature and high-pressure condensed water 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 device is simpler.

[0055] Other features and advantages of this application will be described in the subsequent description, and part of them will become obvious 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 drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The drawings are used to provide an understanding of the technical solutions of this application, and constitute a part of the description. They are used together with the embodiments of this application to explain the technical solutions of this application, and do not constitute a limitation to the technical solutions of this application.

[0057] Figure 1 Structural schematic diagram of the air handling device provided for some embodiments of this application;

[0058] Figure 2 is Figure 1 Structural schematic diagram of the water vapor compressor in

[0059] Figure 3 Structural schematic diagram of the air handling device provided for other embodiments of this application;

[0060] Figure 4 Flowchart of the control method provided for some embodiments of this application;

[0061] Figure 5 Flowchart of the control method provided for other embodiments of this application.

[0062] Among them, the correspondence between the reference numerals and the component names is as follows:

[0063] 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, 120 First heat exchanger, 130 Indoor heat exchanger, 140 First liquid pump, 150 Second heat exchanger, 200 Steam 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. Detailed implementation manners

[0064] This application describes multiple embodiments, but the description is exemplary rather than restrictive, and it will be obvious to those of ordinary skill in the art that there can be more embodiments and implementation solutions within the scope of the embodiments described in this application. Although many possible combinations of features are shown in the drawings and discussed in the detailed implementation manners, many other combinations 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.

[0065] This application includes and contemplates combinations with features and elements known to those of ordinary skill in the art. The embodiments, features, and elements already disclosed in this application can also be combined with any conventional features or elements to form a unique invention solution defined by the claims. Any feature or element of any embodiment can also be combined with features or elements from other invention solutions to form another unique invention solution defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in this application can be implemented alone or in any suitable combination. Therefore, the embodiments are not subject to other restrictions except those made according to the appended claims and their equivalent replacements. In addition, various modifications and changes can be made within the scope of protection of the appended claims.

[0066] In addition, when describing representative embodiments, the specification may have presented a method and / or process as a particular sequence of steps. However, to the extent that the method or process does not depend on a particular order of the steps described herein, the method or process should not be limited to the particular order of steps described. As will be understood by those of ordinary skill in the art, other sequences of steps are possible. Accordingly, the particular order of steps set forth in the specification should not be construed as a limitation on the claims. In addition, 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 understand that such order can vary and still remain within the spirit and scope of the embodiments of the present application.

[0067] The air handling equipment provided by the present application, as Figures 1 to 3 shown, 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 (such as an electronic expansion valve) 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 provided between the bearing sleeve 220 and the rotor shaft 270; and a compression unit, which is provided at the end of the rotor shaft 270; wherein, the first end of the first control pipeline 20 is connected between the second heat exchange unit 300 and the throttling component 400, 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.

[0068] The air treatment device operates a water vapor compressor 200. After the water vapor is compressed by the compression unit from the first heat exchange unit 100, it enters the second heat exchange unit 300 to release heat, causing the temperature of the water vapor to decrease and form condensed water (i.e., medium-temperature and high-pressure condensed water). The condensed water then passes through a throttling component 400 to reduce the pressure and enters the first heat exchange unit 100 to absorb heat, causing the temperature of the condensed water to increase and form water vapor, thus cycling. During this process, a part of the medium-temperature and high-pressure condensed water flowing out of the second heat exchange unit 300 flows along the first control pipeline 20 through the first cooling chamber 221 to the first heat exchange unit 100. This part of the medium-temperature and high-pressure condensed water absorbs the heat of the bearing sleeve 220 during the process of passing through the first cooling chamber 221, achieving the cooling of the bearing 240 and the bearing sleeve 220. This solution does not require an additional cooling device for cooling the water vapor compressor 200, and the structure of the air treatment device is simpler.

[0069] It can be that the first control pipeline 20 is provided with a first control valve 21; or it can be in a way that the first matching pipeline 10 is provided with a first control valve, etc. 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 should all fall within the protection scope of this application.

[0070] As Figures 1 to 3 shown, the following takes "both the bearing sleeve 220 and the bearing 240 include two, the stator 230 is located between the two bearing sleeves 220, 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 two bearing sleeves 220 are located between the primary compression unit 250 and the secondary compression unit 260, the first port of the primary compression unit 250 is connected to the second port of the first heat exchange unit 100, 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, and the second port of the secondary compression unit 260 is connected to the first port of the outdoor heat exchanger" as an example for detailed description. Figure 2 The labels a, b, and c in

[0071] In some examples, as Figures 1 to 3 shown, the air treatment device further includes: a liquid storage tank 500. The liquid storage tank 500 has a liquid inlet, a first liquid outlet, and a second liquid outlet. The liquid inlet is connected to the second port of the outdoor heat exchanger, the first liquid outlet is connected to the throttling component 400, and the second liquid outlet is connected to the first end of the first control pipeline 20.

[0072] The medium-temperature and high-pressure condensate water in the outdoor heat exchanger enters the liquid storage tank 500 from the liquid inlet, and then a part of the medium-temperature and high-pressure condensate water flows from the second liquid outlet along the first control pipeline 20 through two first cooling chambers 221 to the first heat exchange unit 100, so as to cool the two bearings 240 and the two bearing sleeves 220. Another part of the medium-temperature and high-pressure condensate water flows from the first liquid outlet through the throttling component 400 to the first heat exchange unit 100 to cool the indoor environment.

[0073] In some examples, such as Figures 1 to 3 shown, the air handling device further includes: two second matching pipelines 30 and a second control pipeline 40 with a second control valve 41. The liquid storage tank 500 further has a third liquid outlet. The housing 210, the stator 230, the rotor shaft 270, the two bearing sleeves 220 and the 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 port of one of the two second matching 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 port of one of the two second matching pipelines 30 is connected to the first port of the second cooling chamber 280. The first port of the other of the two second matching pipelines 30 is connected to the second port of the second cooling chamber 280. The second port of the other of the two second matching pipelines 30 is connected to the first heat exchange unit 100.

[0074] The medium-temperature and high-pressure condensate water in the outdoor heat exchanger enters the liquid storage tank 500 from the liquid inlet. 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 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 after inter-stage cooling flows to the second-stage compression unit 260 for continuous compression. Another part flows back to the first heat exchange unit 100 after passing through the two second matching 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, so as to cool 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] In some examples, such as Figures 1 to 3As shown, the air handling device 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 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 first heat exchange unit 100.

[0076] When the pressure builds up in the steam compressor 200, by opening the fourth control valve 51, surging of the steam compressor 200 can be prevented.

[0077] In some examples, as Figure 1 shown, the first heat exchange unit 100 includes: an evaporation chamber 110. The first port of the primary compression unit 250, the second end of the first matching pipeline 10, the second port of the other of the two second matching pipelines 30, and the second end of the throttling component 400 are all connected to the evaporation chamber 110. The first end of the throttling component 400 is connected to the first liquid outlet of the liquid storage tank 500; a first heat exchanger 120, which is arranged inside the evaporation chamber 110; an indoor heat exchanger 130, which is arranged outside the evaporation chamber 110; and a first liquid pump 140, which is arranged outside the evaporation chamber 110. The first liquid pump 140, the first heat exchanger 120, and the indoor heat exchanger 130 are connected to form a first circulation path.

[0078] The low-temperature and low-pressure condensed water after throttling by the throttling component 400 enters the evaporation chamber 110, absorbs the heat of the first heat exchanger 120, and the liquid in the first circulation path circulates to absorb the heat in the room, thereby achieving cooling of the room.

[0079] Furthermore, as Figure 1 shown, the air handling device further includes: a second heat exchanger 150, which has a first heat exchange flow path and a second heat exchange flow path. The first circulation path further includes the first heat exchange flow path, and the second heat exchange flow path exchanges heat with 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. At least one of the third matching pipeline 60 and the third control pipeline 70 is provided with a second liquid pump 71.

[0080] The cooling flow path 291 is arranged as a spiral channel. The liquid in the second circulation path circulates to absorb the heat of the stator 230 and the housing 210, achieving cooling of 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 handling device is simpler.

[0081] It may be that the third matching pipeline 60 is provided with a second liquid pump; or it may be that the third control pipeline 70 is provided with a second liquid pump 71 or the like; the above can all achieve the purpose of the present 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 the present application.

[0082] In some other examples, such as Figure 2 As shown, a cooling flow path 291 is formed between the stator 230 and the housing 210. The first heat exchange unit 100 includes: an evaporation chamber 110, a first port of the primary compression unit 250, a second end of the first matching pipeline 10, a second port of the other of the two second matching pipelines 30, and a second end of the throttling component 400 are all connected to the evaporation chamber 110, and a first end of the throttling component 400 is connected to a first liquid outlet of the liquid storage tank 500; a first heat exchanger 120, the first heat exchanger 120 is arranged in the evaporation chamber 110; an indoor heat exchanger 130, the indoor heat exchanger 130 is arranged outside the evaporation chamber 110; and a first liquid pump 140, the first liquid pump 140 is arranged outside the evaporation chamber 110, and the first liquid pump 140, the cooling flow path 291, the first heat exchanger 120 and the indoor heat exchanger 130 are connected to form a third circulation path.

[0083] The cooling flow path 291 is arranged as a spiral channel. The low-temperature and low-pressure condensed water after throttling by the throttling component 400 enters the evaporation chamber 110, absorbs the heat of the first heat exchanger 120, and the liquid in the third circulation path circulates, absorbing the heat of the indoor, stator 230 and housing 210, so as to realize the cooling of the indoor, stator 230 and housing 210. This solution does not require an additional cooling device for cooling the steam compressor 200, and the structure of the air handling equipment is simpler.

[0084] In some embodiments, the air handling equipment further includes: an indoor fan, the indoor fan is correspondingly arranged with the first heat exchange unit 100; and an outdoor fan, the outdoor fan is correspondingly arranged with the second heat exchange unit 300. Such as Figure 1 and Figure 3 As 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.

[0085] In the present application, the first ports are all inlets, the second ports are all outlets, 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.

[0086] The control method of the air handling equipment provided by the embodiment of the present invention, such as Figure 1 、 Figure 3 、 Figure 4 and Figure 5 As shown, includes:

[0087] Obtain the temperature of the bearing sleeve 220, and control the first control valve 21 according to the temperature of the bearing sleeve 220, so as to better cool the bearing sleeve 220 and the bearing 240.

[0088] In some examples, there are two bearing sleeves. The steps of obtaining the temperature of the bearing sleeves and controlling the first control valve according to the temperature of the bearing sleeves include:

[0089] 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;

[0090] Based on the non - establishment of the first determination condition, increase the opening degree of the first control valve.

[0091] When the opening degree of the first control valve 21 increases, the amount of medium - temperature and high - pressure condensed water passing through the first control valve 21 increases, which can improve the cooling effect of the bearing sleeve 220 and the bearing 240.

[0092] In some examples, such as Figure 1 、 Figure 3 、 Figure 4 and Figure 5 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 determining whether the second determination condition the first preset value K1 ≤ △t ≤ the second preset value K2 holds;

[0093] Based on the non - establishment of the second determination condition, increase the opening degree of the second control valve 41.

[0094] When the opening degree of the second control valve 41 increases, the amount of medium - temperature and high - pressure condensed water passing through the second control valve 41 increases, which can improve the cooling effect of the inter - stage connection pipeline 290. K1 is greater than 0 °C. For example, K1 is set to 1 °C and K2 is set to 2 °C. In this way, 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.

[0095] In some examples, such as Figure 1 、 Figure 3 、 Figure 4 and Figure 5 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 holds;

[0096] Based on the non - establishment of the third determination condition, increase the rotational speed of the first liquid pump 140 and / or the second liquid pump 71.

[0097] When the rotational speed of the first liquid pump 140 and / or the second liquid pump 71 increases, the cooling effect of the stator 230 can be improved. ForFigure 1 For the embodiment, based on the non - establishment of the third determination condition, it can be set to increase the rotation speed of the second liquid pump 71 (or the rotation speed of the first liquid pump 140 can be increased, or the rotation speeds of both the first liquid pump 140 and the second liquid pump 71 can be increased simultaneously). Regarding Figure 3 For the embodiment, based on the non - establishment of the third determination condition, it is set to increase the rotation speed of the first liquid pump 140.

[0098] In some examples, as Figure 1 and Figure 4 shown, before the step of obtaining the temperatures t11 and t12 of the bearing sleeve 220, the control method further includes:

[0099] Running the first liquid pump 140 and the second liquid pump 71;

[0100] Opening the fourth control valve 51;

[0101] Opening the steam compressor 200 and controlling the steam compressor 200 to run to the set rotation speed;

[0102] Gradually (such as slowly) closing the fourth control valve 51 according to the set instruction, then obtaining the pressure P inside the outdoor heat exchanger, and determining whether the fourth determination condition P > the preset pressure P1 is established;

[0103] Based on the non - establishment of the fourth determination condition, increasing the rotation speed of the steam compressor 200;

[0104] Based on the establishment of the fourth determination condition, controlling the throttling component 400 to open to the set opening degree, controlling the first control valve 21 to open to the first set opening degree, controlling the second control valve 41 to open to the second set opening degree, and controlling the steam compressor 200 to run at the current rotation speed.

[0105] 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.

[0106] In some examples, as Figure 1 and Figure 4 shown, before the step of running the first liquid pump 140 and the second liquid pump 71, the control method further includes:

[0107] 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 this pressure and water level, so as to adjust the initial pressure in the evaporation chamber 110 to the set pressure and the initial water level in the evaporation chamber 110 to the set water level.

[0108] That is, obtain the initial pressure in the evaporation chamber 110, determine whether the initial pressure in the evaporation chamber 110 is lower than the set pressure. If the initial pressure in the evaporation chamber 110 is 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; obtain the initial water level in the evaporation chamber 110, determine whether the initial water level in the evaporation chamber 110 is lower than the set water level. If the initial water level in the evaporation chamber 110 is 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.

[0109] In some other examples, such as Figure 3 and Figure 5 shown, before the step of obtaining the temperatures t11 and t12 of the bearing housing 220, the control method further includes:

[0110] Run the first liquid pump 140;

[0111] Turn on the fourth control valve 51;

[0112] Turn on the steam compressor 200, and control the steam compressor 200 to run to the set speed;

[0113] Gradually (such as slowly) close the fourth control valve 51 according to the set instruction, then obtain the pressure P inside the outdoor heat exchanger, and determine whether the fourth determination condition P > the preset pressure P1 is established;

[0114] If the fourth determination condition is not established, increase the speed of the steam compressor 200;

[0115] If the fourth determination condition is established, 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 speed.

[0116] In some examples, such as Figure 3 and Figure 5 shown, before the step of running the first liquid pump 140, the control method further includes:

[0117] Obtain the initial pressure and initial water level in the evaporation chamber 110, and control the vacuum pumping device 600 and the water injection device 700 connected to the evaporation chamber 110 according to the pressure and water level to adjust the initial pressure in the evaporation chamber 110 to the set pressure and the initial water level in the evaporation chamber 110 to the set water level.

[0118] That is: obtain the initial pressure in the evaporation chamber 110, determine whether the initial pressure in the evaporation chamber 110 is lower than the set pressure. If the initial pressure in the evaporation chamber 110 is 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; obtain the initial water level in the evaporation chamber 110, determine whether the initial water level in the evaporation chamber 110 is lower than the set water level. If the initial water level in the evaporation chamber 110 is 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.

[0119] In some examples, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 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 determining whether the fifth determination condition |t3 - t4| ≤ the third temperature threshold T3 holds;

[0120] Based on the fifth determination condition holding, obtain the pressure fluctuation amplitude at the second port of the secondary compression unit 260, and determine whether the sixth determination condition that the steam compressor 200 surges holds according to the pressure fluctuation amplitude;

[0121] Based on the sixth determination condition holding, execute the step of turning on the fourth control valve 51 (to improve the pressure buildup in the steam compressor 200 and avoid continuous surging of the steam compressor 200);

[0122] Based on the sixth determination condition not holding, maintain the current operating state.

[0123] In some examples, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 shown, based on the fifth determination condition not holding, obtain the indoor outlet air temperature t5, and determine whether the seventh determination condition t5 ≤ t4 holds;

[0124] Based on the seventh determination condition holding, reduce the rotation speed of the first liquid pump 140 and / or the rotation speed of the indoor fan (to quickly adjust the indoor temperature t3 to the preset refrigeration temperature t4), and then execute 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 holds;

[0125] 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 blower (to quickly adjust the indoor temperature t3 to the preset refrigeration temperature t4), and 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 holds.

[0126] In one embodiment, as Figure 1 and Figure 4 shown, a control method for an air - handling device includes:

[0127] Obtain the initial pressure and the initial water level in the evaporation chamber 110;

[0128] 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;

[0129] 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;

[0130] Control the first liquid pump 140 to operate at a first set speed, and control the second liquid pump 71 to operate at a second set speed;

[0131] Turn on the fourth control valve 51;

[0132] Turn on the steam compressor 200, and control the steam compressor 200 to run to the set rotational speed;

[0133] Gradually close the fourth control valve 51 according to the set instruction;

[0134] Obtain the pressure P inside the outdoor heat exchanger, and determine whether the fourth determination condition P > P1 holds;

[0135] Based on the non - establishment of the fourth determination condition, increase the rotational speed of the steam compressor 200, and then execute the steps of obtaining the pressure P inside the outdoor heat exchanger, and determining whether the fourth determination condition P > P1 holds;

[0136] 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 rotational speed;

[0137] Obtain the pressure and temperature of the steam in the inter - stage connecting pipeline 290, determine the superheat degree △t of the steam in the inter - stage connecting pipeline 290 according to the pressure and temperature, and determine whether the second determination condition K1 ≤ △t ≤ K2 holds;

[0138] Based on the non - establishment of the second determination condition, increase the opening degree of the second control valve 41, 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 judging whether the second determination condition K1 ≤ △t ≤ K2 holds;

[0139] 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;

[0140] Based on the non - establishment of the third determination condition, increase the rotation speed of the second liquid pump 71, then execute the steps of obtaining the temperature t2 of the stator 230, and judging whether the third determination condition t2 ≤ T2 holds;

[0141] 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;

[0142] Based on the non - establishment of the first determination condition, increase the opening degree of the first control valve 21, 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;

[0143] 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;

[0144] Based on the establishment of the fifth determination condition, obtain the pressure fluctuation amplitude at 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;

[0145] 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 prevent the water vapor compressor 200 from surging continuously);

[0146] 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 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 determination condition K1 ≤ △t ≤ K2 holds;

[0147] Based on the non - establishment of the fifth determination condition, obtain the indoor air outlet temperature t5, and judge whether the seventh determination condition t5 ≤ t4 holds;

[0148] 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 decreased (to quickly adjust the indoor temperature t3 to the preset refrigeration temperature t4), and then 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 holds are executed;

[0149] 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 refrigeration temperature t4), and then 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 holds are executed.

[0150] In another embodiment, as Figure 3 and Figure 5 shown, a control method for an air - handling device includes:

[0151] Obtain the initial pressure and the initial water level in the evaporation chamber 110;

[0152] 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;

[0153] 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;

[0154] Control the first liquid pump 140 to operate at the first set speed;

[0155] Turn on the fourth control valve 51;

[0156] Turn on the water - vapor compressor 200, and control the water - vapor compressor 200 to run to the set rotation speed;

[0157] Gradually close the fourth control valve 51 according to the set instruction;

[0158] Obtain the pressure P inside the outdoor heat exchanger, and determine whether the fourth determination condition P > P1 holds;

[0159] Based on the non - establishment of the fourth determination condition, increase the rotation speed of the water - vapor compressor 200, and then execute the steps of obtaining the pressure P inside the outdoor heat exchanger and determining whether the fourth determination condition P > P1 holds;

[0160] 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 steam compressor 200 to operate at the current rotational speed;

[0161] Obtain the pressure and temperature of the steam in the inter-stage connection pipeline 290, determine the superheat degree Δt of the steam in the inter-stage connection pipeline 290 according to the pressure and temperature, and judge whether the second determination condition K1 ≤ Δt ≤ K2 holds;

[0162] 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 steam in the inter-stage connection pipeline 290, determining the superheat degree Δt of the steam in the inter-stage connection pipeline 290 according to the pressure and temperature, and judging whether the second determination condition K1 ≤ Δt ≤ K2 holds;

[0163] 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;

[0164] Based on the non-establishment of the third determination condition, increase the rotational speed of the first liquid pump 140, and then execute the steps of obtaining the temperature t2 of the stator 230 and judging whether the third determination condition t2 ≤ T2 holds;

[0165] 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;

[0166] 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;

[0167] 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;

[0168] Based on the establishment of the fifth determination condition, obtain the pressure fluctuation amplitude at the second port of the secondary compression unit 260, and judge whether the sixth determination condition that the steam compressor 200 surges (i.e., the pressure fluctuation amplitude > the preset pressure fluctuation amplitude) holds according to the pressure fluctuation amplitude;

[0169] 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 steam compressor 200 and avoid continuous surging of the steam compressor 200);

[0170] Based on the non - establishment of the sixth determination condition, perform the steps of obtaining the pressure and temperature of the water vapor in the inter - stage connecting pipeline 290, determining the superheat degree △t 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≤△t≤K2 is established;

[0171] Based on the non - establishment of the fifth determination condition, obtain the indoor outlet air temperature t5 and judge whether the seventh determination condition t5≤t4 is established;

[0172] 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), and then perform the steps of 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;

[0173] 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), and then perform the steps of 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.

[0174] 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 can achieve flow control by changing the rotational speed, and can also achieve the purpose of the present 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 the present application.

[0175] In summary, for the air - handling equipment provided in the present application, when operating the water - vapor compressor, the water vapor is compressed by the compression unit after flowing 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, a part of the medium - temperature and high - pressure condensed water flowing out of the second heat - exchange unit will flow along the first control pipeline through the first cooling chamber to the first heat - exchange unit. This part of the medium - temperature and high - pressure condensed water 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.

[0176] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "periphery", "the structure of the character 'kou'", etc. is 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 thus should not be construed as a limitation to the present invention.

[0177] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "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", "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 circumstances.

[0178] 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 of 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 can include a computer storage medium (or a non-transitory medium) and a communication medium (or a 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. Computer storage media include, but are 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, a communication medium generally includes 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 mating 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 mating 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 provided 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, provided at the end of the rotor shaft; Wherein, the first end of the first control pipeline is connected between the second heat exchange unit and the throttling component, 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 mating pipeline is connected to the second port of the first cooling chamber, and the second end of the first mating pipeline is connected to the first heat exchange unit.

2. The air treatment device according to claim 1, 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, 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.

3. The air treatment device according to claim 2, wherein, It further includes: A liquid storage tank, which has a liquid inlet, a first liquid outlet, and a second liquid outlet. The liquid inlet is connected to the second port of the outdoor heat exchanger, the first liquid outlet is connected to the throttling component, and the second liquid outlet is connected to the first end of the first control pipeline.

4. The air treatment device according to claim 3, characterized in that, It further includes: Two second mating pipelines and a second control pipeline with a second flow control component. The liquid storage tank also has a third liquid outlet. The housing, the stator, the rotor shaft, the two bearing sleeves, and the two bearings jointly enclose a second cooling chamber. The first end of the second control pipeline is connected to the third liquid outlet, 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, one of the two second mating pipelines has its second end connected to the first port of the second cooling chamber, the other of the two second mating pipelines has its first end connected to the second port of the second cooling chamber, and the other of the two second mating pipelines has its second end connected to the first heat exchange unit.

5. The air treatment device according to claim 2, wherein, 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 second port of the secondary compression unit and the first port of the outdoor heat exchanger, and the second end of the fourth control pipeline is connected between the first port of the primary compression unit and the second port of the first heat exchange unit.

6. The air treatment device according to any one of claims 2 to 5, characterized in that The first heat exchange unit includes: An evaporation chamber, to which the first port of the first-stage compression unit, the second end of the first matching pipeline, and the second end of the throttling component are all connected; A first heat exchanger, which is arranged inside the evaporation chamber; An indoor heat exchanger, which is arranged outside the evaporation chamber; and A first liquid pump, which is arranged outside the evaporation chamber and is connected to the first heat exchanger and the indoor heat exchanger to form a first circulation path.

7. The air treatment device according to claim 6, wherein It further includes: A second heat exchanger, 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 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.

8. The air treatment device according to any one of claims 2 to 5, characterized in that, A cooling flow path is formed between the stator and the housing, and the first heat exchange unit includes: An evaporation chamber, to which the first port of the first-stage compression unit, the second end of the first matching pipeline, and the second end of the throttling component are all connected; A first heat exchanger, which is arranged inside the evaporation chamber; An indoor heat exchanger, which is arranged outside the evaporation chamber; and A first liquid pump, which is arranged outside the evaporation chamber and is connected to the cooling flow path, the first heat exchanger, and the indoor heat exchanger to form a third circulation path.

9. The air treatment device according to any one of claims 1 to 5, characterized in that It further includes: An indoor fan, which is correspondingly arranged with the first heat exchange unit; and An outdoor fan, which is correspondingly arranged with the second heat exchange unit.

10. A control method for an air treatment device according to any one of claims 1 to 9, characterized in that, It includes: Obtain the temperature of the bearing sleeve, and control the first flow control component according to the temperature of the bearing sleeve.

11. The control method according to claim 10, characterized in that, 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: Obtain the temperatures t11 and t12 of the two bearing sleeves, and judge whether the first judgment condition t11≤the first temperature threshold T1 and t12≤T1 holds; Based on the non-establishment of the first judgment condition, increase the opening degree of the first flow control component; Wherein, the first flow control component is a 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 connection pipeline, determine the superheat degree △t of the water vapor in the inter-stage connection pipeline according to the pressure and temperature, and judge whether the second judgment condition the first preset value K1≤△t≤the second preset value K2 holds; Based on the non-establishment of the second judgment condition, increase the opening degree of the second flow control component; Wherein, the second flow control component is a second control valve.

13. The control method according to claim 10, characterized in that, It further includes: Obtain the temperature t2 of the stator, and judge whether the third judgment condition t2≤the second temperature threshold T2 holds; Based on the non-establishment of the third judgment condition, increase the rotation speed of the first liquid pump and / or the second liquid pump.

14. The control method according to claim 10, 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 rotation speed; Gradually close the fourth flow control component according to the set instruction, then obtain the pressure P inside the outdoor heat exchanger, and determine whether the fourth determination condition P > preset pressure P1 is established; Based on the non - establishment of the fourth determination condition, increase the rotational speed of the steam compressor; Based on the establishment of the fourth determination condition, control the throttle 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 steam compressor to operate 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 10, 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; Open the fourth flow control component; Start the steam compressor and control the steam compressor to operate at the set rotational speed; Gradually close the fourth flow control component according to the set instruction, then obtain the pressure P inside the outdoor heat exchanger, and determine whether the fourth determination condition P > preset pressure P1 is established; Based on the non - establishment of the fourth determination condition, increase the rotational speed of the steam compressor; Based on the establishment of the fourth determination condition, control the throttle 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 steam compressor to operate at the current rotational speed; Wherein, the first flow control component is the first control valve.

17. The control method according to claim 16, wherein Before the step of operating the first 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.

18. The control method according to any one of claims 14 to 17, characterized in that, 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 determine whether the fifth determination condition |t3 - t4| ≤ the third temperature threshold T3 is established; Based on the establishment of the fifth determination condition, obtain the pressure fluctuation amplitude at the second port of the two - stage compression unit, and determine whether the sixth determination condition that the steam compressor surges is established according to the pressure fluctuation amplitude; Based on the establishment of the sixth determination condition, execute the step of opening the fourth flow control component; Based on the non - establishment of the sixth determination condition, maintain the current operating state.

19. According to the control method described in claim 18, characterized in that Based on the non - establishment of the fifth determination condition, obtain the indoor air outlet temperature t5, and determine whether the seventh determination condition t5 ≤ t4 is established; If the seventh determination condition holds, then 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 indoor temperature t3 and the preset refrigeration temperature t4, and determining whether the fifth determination condition |t3 - t4| ≤ the third temperature threshold T3 holds; If the seventh determination condition does not hold, then 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 holds.

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