Spray system, air conditioner and spray system control method

Abstract

The present application provides a spray system, an air conditioner and a spray control method, wherein the spray system includes: a water inlet pipe; a solvent pipe, connected to the water inlet pipe, for providing an added solvent, the added solvent and the spray water in the water inlet pipe are mixed to form a mixed solution, the chemical potential of the mixed solution is lower than the chemical potential of water; a nozzle, connected to the water outlet of the water inlet pipe, for spraying spray water or mixed solution to the heat exchanger of the air conditioner outdoor unit. Through the technical solution of the present application, the outdoor heat exchanger can be sprayed to cool down when the air conditioner is cooling, and the outdoor heat exchanger can be defrosted when the air conditioner is heating, which effectively improves the cooling or heating efficiency of the air conditioner, helps to reduce the energy consumption of the air conditioner, and improves the user experience.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a spray system, an air conditioner and a spray system control method. Background Art

[0002] At present, air conditioners are widely used in people's production and life. Air conditioners are not only used for cooling in summer, but also for heating in winter.

[0003] When the heat exchanger needs to be defrosted in winter, in the related technology, the defrosting purpose is achieved by controlling the reverse circulation of the refrigerant. At this time, the indoor unit usually cannot continue to provide heating. This method not only increases the overall energy consumption of the air conditioner, but also reduces the user's comfort. Summary of the invention

[0004] The purpose of the embodiment of the present application is to provide a spray system for cooling the outdoor heat exchanger when the air conditioner is cooling, and for defrosting the outdoor heat exchanger when the air conditioner is heating, thereby effectively improving the cooling or heating efficiency of the air conditioner and reducing the energy consumption of the air conditioner.

[0005] The first aspect of the present application provides a spray system, comprising: a water inlet pipe; a solvent pipe, connected to the water inlet pipe, for providing an additive solvent, the additive solvent and the spray water in the water inlet pipe are mixed to form a mixed solution, the chemical potential of the mixed solution is lower than the chemical potential of water; a nozzle, connected to the water outlet of the water inlet pipe, for spraying spray water or the mixed solution onto the heat exchanger of the air conditioner outdoor unit.

[0006] In the above implementation process, the spray system includes a water inlet pipe, a solvent pipe and a nozzle. One end of the water inlet pipe is connected to a water source, and the other end is connected to the water inlet pipe. The nozzle is oriented toward the heat exchanger. In this way, when the air conditioner is cooling, the refrigerant absorbs heat and flows to the heat exchanger of the air conditioner outdoor unit. The temperature of the heat exchanger rises, and the cooling efficiency will be reduced. Then, by spraying spray water to the heat exchanger, the spray water absorbs heat and evaporates on the surface of the heat exchanger, thereby cooling the heat exchanger, thereby improving the cooling efficiency of the air conditioner. In addition, by connecting a solvent tube to the water inlet pipe, the solvent tube is used to provide an added solvent, and the chemical potential of the mixed solution formed by the added solvent and the spray water is lower than the chemical potential of water (frost). Then, when the air conditioner is heating, the outdoor unit heat exchanger produces condensed water. Due to the low outdoor temperature, frost will form on the surface of the heat exchanger. By spraying the mixed solution to the heat exchanger, since the chemical potential of the mixed solution is lower than that of water, the frost on the surface of the heat exchanger can automatically frost after contacting the mixed solution, thereby improving the heating efficiency of the air conditioner. At the same time, it can avoid the situation where the indoor unit cannot heat normally when defrosting by controlling the reverse circulation of the refrigerant, thereby reducing the overall energy consumption of the air conditioner and improving the comfort of the user.

[0007] Exemplarily, the added solvent may be alcohol or salt water, etc. Of course, antifreeze or other substances for preventing the added solvent from freezing may also be added to the added solvent.

[0008] In a possible implementation, a first control switch is provided on the water inlet pipe, and a second control switch is provided on the solvent pipe; the spray system also includes a controller, which is electrically connected to the first control switch and the second control switch, and is used to control the opening or closing of the first control switch and / or the second control switch.

[0009] In the above implementation process, by respectively arranging a first control switch and a second control switch on the water inlet pipe and the solvent pipe, and arranging a controller electrically connected to the first control switch and the second control switch, the controller can control the on and off of the spray water by controlling the first control switch to be turned on or off; the controller controls the second control switch to be turned on or off, so as to control whether the added solvent is mixed with the spray water, thereby realizing automatic control of spraying spray water or mixed solution to the heat exchanger, thereby improving the automation level of the product.

[0010] In one possible implementation, the spray system also includes: a pressure sensor, which is arranged on the compressor suction pipe of the air conditioner outdoor unit and is electrically connected to the controller, and the controller is used to control the opening of the first control switch and the second control switch when the pressure sensor detects that the suction pressure of the compressor is lower than a preset pressure threshold and the air conditioner is in a heating condition.

[0011] In the above implementation process, by setting a pressure sensor electrically connected to the controller in the heat exchanger, the pressure sensor can detect the suction pressure of the compressor in real time, and can send a spray signal to the controller when the suction pressure of the compressor is lower than the preset pressure threshold. At this time, the controller controls the opening of the first control switch and the second control switch to mix the added solvent with the spray water, and spray the mixed solution onto the surface of the heat exchanger through the nozzle, thereby achieving defrosting of the heat exchanger.

[0012] It can be understood that when the suction pressure of the compressor is lower than the preset pressure threshold, the controller controls the first control switch and the second control switch to open to defrost the heat exchanger, and the air conditioner is in a heating state at this time.

[0013] In a possible implementation, the sprinkler system further includes a control box, which is disposed on the outdoor unit, and the controller, the first control switch, and the second control switch are all disposed in the control box.

[0014] In the above implementation process, the spray system also includes a control box arranged on one side in the width direction of the air-conditioning outdoor unit, and the controller and the first control switch and the second control switch are integrated in the control box. The control box can protect the controller, the first control switch and the second control switch, and prevent the controller, the first control switch and the second control switch from being exposed and damaged during transportation or use.

[0015] It can be understood that a control panel can be provided in the control box, and the integrator is provided on the control panel.

[0016] In a possible implementation, the spray system further includes: a heating device, and at least a portion of the water inlet pipe is located inside the heating device.

[0017] In the above implementation process, the spray system also includes a heating device, which covers at least part of the outer surface of the water inlet pipe, and is used to heat the mixed solution in the heating pipe before defrosting to avoid clogging the water inlet pipe after the solution in the water inlet pipe freezes, thereby ensuring reliable defrosting of the heat exchanger.

[0018] It can be understood that the solution in the water inlet pipe can be a mixed solution or a spray liquid used to spray and cool the outdoor heat exchanger during air conditioning.

[0019] Exemplarily, the heating device includes a heating water tank, in which an electric heating wire or a heating tube is arranged for heating the water in the water tank, thereby heating the mixed solution in the water inlet pipe.

[0020] In a possible implementation, the heating device is disposed close to the nozzle side.

[0021] In the above implementation process, since a mixed solution is likely to remain in a section of the water inlet pipe close to the nozzle after each defrosting, a heating device is arranged close to the nozzle side and covers the section of the water inlet pipe. Thus, the mixed solution in the section of the water inlet pipe can be heated before each defrosting to avoid the solution in the section of the water inlet pipe from freezing and clogging the water inlet pipe, thereby ensuring stable defrosting.

[0022] In a possible implementation, the height of the water inlet end of the water inlet pipe in the heating device is not lower than the water outlet end.

[0023] In the above implementation process, the height of the water inlet end of the water inlet pipe located in the heating device is not lower than the water outlet pipe, so the mixed solution after each defrosting can be stored in this section of the water inlet pipe, so that the heating device can heat the mixed solution and ensure the normal circulation of the mixed solution in the water inlet pipe. The structure and principle are relatively simple and easy to implement.

[0024] Exemplarily, the water inlet pipe in the heating device has a U-shaped or spiral structure, which is convenient for storing the solution after each defrosting.

[0025] In a possible implementation, one end of the solvent tube is connected to a solvent box, in which an additional solvent is stored, and the other end of the solvent tube is connected to the water inlet pipe.

[0026] In the above implementation process, a solvent box is arranged at one end of the solvent tube away from the water inlet pipe, and the additional solvent is stored in the solvent box, so that the additional solvent can be easily introduced into the water inlet pipe. When the additional solvent in the solvent box is insufficient, the solvent box can be directly replaced or the additional solvent can be added to the solvent box, thereby improving the convenience of product use and facilitating transportation and installation.

[0027] A second aspect of the present application provides an air conditioner, comprising: an outdoor unit, the outdoor unit being provided with a heat exchanger; and a spray system as described in any one of the first aspect embodiments, the spray system being used to spray water or a mixed solution onto the heat exchanger.

[0028] The air conditioner provided in the second embodiment of the present application includes the spray system described in any one of the technical solutions of the first aspect, and thus has the technical effects of any of the above technical solutions, which will not be repeated here.

[0029] The third aspect of the present application provides a spray system control method, the spray system includes a water inlet pipe, a solvent pipe, a nozzle, a controller and a pressure sensor, the water inlet pipe is connected to a nozzle, the spray port of the nozzle is toward the heat exchanger, the solvent pipe is connected to the water inlet pipe, and is used to provide an additive solvent, the chemical potential of the mixed solution formed by the addition of the solvent and the spray water is lower than that of water, and the water inlet pipe and the solvent pipe are respectively provided with a first control switch and a second control switch, the controller is respectively electrically connected to the first control switch, the second control switch and the pressure sensor, the pressure sensor is used to detect the suction pressure of the compressor of the outdoor unit of the air conditioner, the method includes: obtaining the operating condition of the air conditioner, the operating condition includes cooling and heating; when the operating condition is heating, the controller controls the first control switch and the second control switch to open, so that the additive solvent in the solvent pipe is mixed with the spray water in the water inlet pipe to form a mixed solution, and the mixed solution is sprayed toward the heat exchanger of the outdoor unit through the nozzle.

[0030] In the above implementation process, when the air conditioner is in the heating condition, when the condensed water from the outdoor unit flows to the heat exchanger, the surface of the heat exchanger will frost due to the low outdoor temperature. By controlling to open the first control switch and the second control switch, the mixed solution can be sprayed to the heat exchanger through the nozzle. Since the chemical potential of the mixed solution is lower than that of water, the frost on the surface of the heat exchanger can automatically frost after contacting the mixed solution, thereby improving the heating efficiency of the air conditioner.

[0031] In a possible implementation, before the controller controls the first control switch and the second control switch to open so that the added solvent in the solvent pipe mixes with the spray water in the water inlet pipe to form a mixed solution, and the mixed solution is sprayed toward the heat exchanger of the outdoor unit through the nozzle, it also includes: the pressure sensor detects the suction pressure of the compressor, and when the suction pressure is lower than a preset pressure threshold, the controller controls to open the first control switch and the second control switch.

[0032] In the above implementation process, when the air conditioner is in the heating condition, the outdoor heat exchanger absorbs heat and evaporates to produce condensed water, which condenses and adheres to the heat exchanger, affecting the heat exchange effect. At this time, the pressure sensor detects that the suction pressure of the compressor is lower than the preset pressure threshold, indicating that the heat exchanger needs to be defrosted. The pressure sensor sends a spray signal to the controller. After receiving the spray signal, the controller controls the opening of the first control switch and the second control switch, thereby realizing defrosting by spraying a mixed solution on the heat exchanger, effectively improving the automation level of defrosting of the heat exchanger.

[0033] In a possible implementation, the method further includes: when the pressure sensor detects that the inhalation pressure is not lower than the preset pressure threshold, the controller controls closing the first control switch and the second control switch.

[0034] In the above implementation process, after a period of defrosting, when the pressure detector detects that the suction pressure of the compressor returns to the preset pressure threshold, the pressure detector sends a stop spraying signal to the controller. At this time, the controller controls the closing of the first control switch and the second control switch to stop the mixed solution from being introduced into the water inlet pipe, i.e., stops defrosting.

[0035] In a possible implementation, the method further includes: when the operating condition is cooling, the controller controls closing the second control switch and opening the first control switch.

[0036] In the above implementation process, when the air conditioner is in the cooling condition, the surface temperature of the heat exchanger is relatively high and no defrosting is required. The controller controls the second control switch to be closed and the first control switch to be opened to stop the addition of solvent into the water inlet pipe and to introduce spray water into the water inlet pipe. At this time, the nozzle only sprays spray water onto the heat exchanger, and the spray water absorbs heat and evaporates on the surface of the heat exchanger, thereby cooling the heat exchanger to effectively improve the cooling efficiency of the air conditioner.

[0037] In one possible implementation, a first temperature sensor is provided on the compressor exhaust pipe of the outdoor unit, and the outdoor unit is provided with a second temperature sensor. The first temperature sensor and the second temperature sensor are electrically connected to the controller. Before the controller controls to close the second control switch and open the first control switch, it also includes: the first temperature sensor detects the exhaust temperature of the compressor of the air conditioner, and the second temperature sensor detects the ambient temperature of the outdoor unit; the controller controls to close the second control switch and open the first control switch when the first temperature sensor detects that the exhaust temperature is greater than a first preset temperature threshold, and the second temperature sensor detects that the ambient temperature reaches a second preset temperature threshold.

[0038] In the above implementation process, when the air conditioner is in a cooling condition, and when the first temperature sensor detects that the exhaust temperature of the compressor is greater than the first preset temperature threshold, and the second temperature sensor detects that the ambient temperature reaches the second preset temperature threshold, it indicates that the heat exchanger needs to be sprayed for cooling. At this time, the controller controls to close the second control switch to prevent the added solvent from entering the water inlet pipe, and opens the first control switch to allow spray water to pass into the water inlet pipe, thereby achieving spray cooling of the heat exchanger through the nozzle.

[0039] In a possible implementation, a heating device is provided on the water inlet pipe near the nozzle side, and a third temperature sensor is provided in the heating device. Before the controller controls the first control switch and the second control switch to be turned on so that the added solvent in the solvent tube is mixed with the spray water in the water inlet pipe to form a mixed solution, and the mixed solution is sprayed toward the heat exchanger of the outdoor unit through the nozzle, it also includes: the third temperature sensor detects the temperature of the mixed solution in the water inlet pipe; if the temperature of the mixed solution is lower than a preset temperature threshold, the heating device is started.

[0040] In the above implementation process, when the heat exchanger needs to be defrosted, since a mixed solution will be stored at the end of the water inlet pipe close to the nozzle after each defrosting, the temperature of the mixed solution in this section of the water inlet pipe can be detected by a third temperature sensor before defrosting. When the temperature of the mixed solution in the water inlet pipe is detected to be lower than the preset temperature threshold, the heating device heats the mixed solution in the water inlet pipe, thereby improving the defrosting effect of the mixed solution, thereby ensuring that the spray system can reliably defrost the heat exchanger.

[0041] The spray system provided in the first aspect of the embodiment of the present application can not only spray spray water to the outdoor heat exchanger when the air conditioner is cooling, so as to cool the heat exchanger, thereby improving the cooling efficiency of the air conditioner; and by arranging a solvent tube connected to the water inlet pipe, the solvent tube is used to introduce an added solvent into the water inlet pipe. The chemical potential of the mixed solution formed by mixing the added solvent with the spray water is lower than the chemical potential of the frost. Therefore, when the air conditioner is heating, the mixed solution can be sprayed to the outdoor heat exchanger to defrost the heat exchanger, thereby improving the heating efficiency of the heat exchanger. At the same time, it can avoid the situation where the indoor unit cannot heat normally due to defrosting by controlling the reverse circulation of the refrigerant, thereby reducing the overall energy consumption of the air conditioner and improving the comfort of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A schematic diagram of the assembly structure of a spray system provided in some embodiments of the present application from one perspective;

[0044] Figure 2 A schematic diagram of the assembly structure of the spray system provided in an embodiment of the present application from another perspective;

[0045] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0046] Figure 4 A schematic flow chart of a spray control method provided in some embodiments of the present application;

[0047] in, Figure 1 and Figure 3 The arrows in the figure indicate the flow direction of the spray liquid.

[0048] Icons: 100, outdoor unit; 200, heat exchanger; 10, water inlet pipe; 101, first control switch; 20, nozzle; 30, solvent pipe; 301, second control switch; 40, control box; 50, heating device; 60, solvent box. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0050] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0051] Please refer to Figures 1 to 3 According to some embodiments of the present application, a first aspect embodiment of the present application provides a spray system, including: a water inlet pipe 10; a solvent pipe 30, connected to the water inlet pipe 10, for providing an added solvent, the added solvent and the spray water in the water inlet pipe 10 are mixed to form a mixed solution, the chemical potential of the mixed solution is lower than the chemical potential of water; a nozzle 20, connected to the water outlet of the water inlet pipe 10, for spraying spray water or a mixed solution onto the heat exchanger 200 of the air conditioner outdoor unit 100.

[0052] In the above implementation process, the spray system includes a water inlet pipe 10, a solvent pipe 30 and a nozzle 20. One end of the water inlet pipe 10 is connected to a water source, and the other end is connected to the water inlet pipe 10. The spray port of the nozzle 20 faces the heat exchanger 200. In this way, when the air conditioner is cooling, the refrigerant absorbs heat and flows to the heat exchanger 200 of the air conditioner outdoor unit 100. The temperature of the heat exchanger 200 rises, and the cooling efficiency will be reduced. Then, by spraying spray water to the heat exchanger 200, the spray water absorbs heat and evaporates on the surface of the heat exchanger 200, thereby cooling the heat exchanger 200, and thus improving the cooling efficiency of the air conditioner. In addition, by connecting the solvent tube 30 to the water inlet pipe 10, the solvent tube 30 is used to provide an added solvent, and the chemical potential of the mixed solution formed by the addition of the solvent and the spray water is lower than the chemical potential of water (frost). Then, when the air conditioner is heating, the outdoor unit heat exchanger 200 produces condensed water. Due to the low outdoor temperature, frost will form on the surface of the heat exchanger 200. By spraying the mixed solution onto the heat exchanger 200, since the chemical potential of the mixed solution is lower than that of water, the frost on the surface of the heat exchanger 200 can automatically frost after contacting the mixed solution, thereby improving the heating efficiency of the air conditioner. At the same time, it can avoid the situation where the indoor unit cannot heat normally when defrosting by controlling the reverse circulation of the refrigerant, thereby reducing the overall energy consumption of the air conditioner and improving the comfort of the user.

[0053] Exemplarily, the added solvent may be alcohol or salt water, etc. Of course, antifreeze or other substances for preventing the added solvent from freezing may also be added to the added solvent.

[0054] Please refer to Figure 3 In a possible implementation, a first control switch 101 is provided on the water inlet pipe 10, and a second control switch 301 is provided on the solvent pipe 30; the spray system also includes a controller (not shown in the figure), which is electrically connected to the first control switch 101 and the second control switch 301, and is used to control the opening or closing of the first control switch 101 and / or the second control switch 301.

[0055] In the above implementation process, by respectively setting the first control switch 101 and the second control switch 301 on the water inlet pipe 10 and the solvent pipe 30, and setting a controller electrically connected to the first control switch 101 and the second control switch 301, the controller can control the on and off of the spray water by controlling the first control switch 101 to open or close; the controller controls the second control switch 301 to open or close, so as to control whether the added solvent is mixed with the spray water, thereby realizing automatic control of spraying spray water or mixed solution to the heat exchanger 200, thereby improving the automation level of the product.

[0056] In one possible implementation, the spray system also includes: a pressure sensor, which is arranged on the compressor suction pipe of the air conditioner outdoor unit and is electrically connected to the controller. The controller is used to control the opening of the first control switch 101 and the second control switch 301 when the pressure sensor detects that the suction pressure of the heat exchanger 200 is lower than a preset pressure threshold and the air conditioner is in a heating condition.

[0057] In the above implementation process, by setting a pressure sensor electrically connected to the controller in the heat exchanger 200, the pressure sensor can detect the suction pressure of the compressor in real time, and can send a spray signal to the controller when the suction pressure of the compressor is lower than the preset pressure threshold. At this time, the controller controls the opening of the first control switch 101 and the second control switch 301 to mix the added solvent with the spray water, and spray the mixed solution onto the surface of the heat exchanger 200 through the nozzle 20, thereby achieving defrosting of the heat exchanger 200.

[0058] It can be understood that when the suction pressure of the compressor is lower than the preset pressure threshold, the controller controls the first control switch 101 and the second control switch 301 to open to defrost the heat exchanger 200, and the air conditioner is in a heating state at this time.

[0059] Please refer to Figures 1 to 3In a possible implementation, the sprinkler system further includes a control box 40 , which is disposed on the outdoor unit 100 , and the controller, the first control switch 101 , and the second control switch 301 are all disposed in the control box 40 .

[0060] In the above implementation process, the spray system also includes a control box 40 arranged on the air-conditioning outdoor unit 100, and the controller, the first control switch 101 and the second control switch 301 are integrated in the control box 40. The control box 40 can protect the controller, the first control switch 101 and the second control switch 301, and prevent the controller, the first control switch 101 and the second control switch 301 from being exposed and damaged during transportation or use.

[0061] It can be understood that a control panel can be provided in the control box 40, and the integrator is provided on the control panel.

[0062] Please refer to Figures 1 to 3 In a possible implementation, the spray system further includes: a heating device 50 , and at least a portion of the water inlet pipe 10 is located inside the heating device 50 .

[0063] In the above implementation process, the spray system also includes a heating device 50, which covers at least part of the outer surface of the water inlet pipe 10, and is used to heat the mixed solution in the heating pipe before defrosting to avoid clogging the water inlet pipe 10 after the solution in the water inlet pipe 10 freezes, thereby ensuring reliable defrosting of the heat exchanger 200.

[0064] It can be understood that the solution in the water inlet pipe 10 can be a mixed solution, or it can be a spray liquid used to spray and cool the outdoor heat exchanger during air conditioning.

[0065] Exemplarily, the heating device 50 includes a heating water tank, in which an electric heating wire or a heating tube is provided for heating the water in the water tank, thereby heating the mixed solution in the water inlet pipe 10 .

[0066] Please refer to Figures 1 to 3 In a possible implementation, the heating device 50 is disposed close to the nozzle 20 side.

[0067] In the above implementation process, since a mixed solution is likely to remain in a section of the water inlet pipe 10 near the nozzle 20 after each defrosting, the heating device 50 is arranged close to the nozzle side and covers the section of the water inlet pipe 10. Thus, the mixed solution in the section of the water inlet pipe 10 can be heated before each defrosting to avoid the solution in the section of the water inlet pipe 10 from freezing and clogging the water inlet pipe 10, thereby ensuring stable defrosting.

[0068] Please refer to Figure 3In a possible implementation, the height of the water inlet end of the water inlet pipe 10 located in the heating device 50 is not lower than the water outlet end.

[0069] In the above implementation process, by setting the height of the water inlet end of the water inlet pipe 10 located in the heating device 50 to be not lower than the water outlet pipe, the mixed solution after each defrosting can be stored in this section of the water inlet pipe 10, so that the heating device 50 can heat the mixed solution and ensure the normal circulation of the mixed solution in the water inlet pipe 10. The structure and principle are relatively simple and easy to implement.

[0070] Exemplarily, the water inlet pipe in the heating device 50 is in a U-shaped or spiral structure, so as to facilitate the storage of the solution after each defrosting.

[0071] Please refer to Figures 1 to 3 In a possible implementation, one end of the solvent tube 30 is connected to a solvent box 60 , in which an additive solvent is stored, and the other end of the solvent tube 30 is connected to the water inlet pipe 10 .

[0072] In the above implementation process, a solvent box 60 is provided at one end of the solvent tube 30 away from the water inlet pipe 10, and the solvent box 60 stores the additional solvent, so that the additional solvent can be easily introduced into the water inlet pipe 10. When the solvent in the solvent box 60 is insufficient, the solvent box 60 can be directly replaced or the additional solvent can be added to the solvent box 60, thereby improving the convenience of product use and facilitating transportation and installation.

[0073] According to some embodiments of the present application, a second aspect embodiment of the present application provides an air conditioner, comprising: an outdoor unit 100, the outdoor unit 100 being provided with a heat exchanger 200; and a spray system as in any one of the first aspect embodiments, the spray system being used to spray spray water or a mixed solution onto the heat exchanger 200.

[0074] The air conditioner provided in the second embodiment of the present application includes the spray system of any one of the technical solutions in the first aspect, and thus has the technical effects of any of the above technical solutions, which will not be repeated here.

[0075] Please refer to Figure 4According to some embodiments of the present application, a third aspect of the present application provides a method for controlling a spray system, wherein the spray system comprises a water inlet pipe 10, a solvent pipe 30, a nozzle 20, a controller and a pressure sensor, wherein the water inlet pipe 10 is connected to the nozzle 20, wherein the nozzle 20 has a spray port facing the heat exchanger 200, and the solvent pipe 30 is connected to the water inlet pipe 10 for providing an additive solvent, wherein the chemical potential of the mixed solution formed by mixing the additive solvent with the spray water is lower than that of water, and the water inlet pipe 10 and the solvent pipe 30 are respectively provided with a first control switch 101 and a second control switch 301, The controller is electrically connected to the first control switch 101, the second control switch 301 and the pressure sensor respectively, and the pressure sensor is used to detect the suction pressure of the compressor of the air conditioner outdoor unit 100. The method includes: obtaining the operating condition of the air conditioner, and the operating condition includes cooling and heating; when the operating condition is heating, the controller controls the first control switch 101 and the second control switch 301 to open, so that the added solvent in the solvent pipe 30 is mixed with the spray water in the water inlet pipe 10 to form a mixed solution, and the mixed solution is sprayed to the heat exchanger 200 of the outdoor unit 100 through the nozzle 20.

[0076] In the above implementation process, when the air conditioner is in the heating condition, when the condensed water from the outdoor unit flows to the heat exchanger 200, frost will condense on the surface of the heat exchanger 200 due to the low outdoor temperature. By controlling to open the first control switch 101 and the second control switch 301, the mixed solution can be sprayed to the heat exchanger 200 through the nozzle 20. Since the chemical potential of the mixed solution is lower than that of water, the frost on the surface of the heat exchanger 200 can automatically frost after contacting the mixed solution, thereby improving the heating efficiency of the air conditioner.

[0077] In a possible implementation, before the controller controls the first control switch 101 on the water inlet pipe 10 and the second control switch 301 on the solvent pipe 30 to open, so that the added solvent in the solvent pipe 30 is mixed with the spray water in the water inlet pipe 10 to form a mixed solution, and the mixed solution is sprayed toward the heat exchanger 200 of the outdoor unit 100 through the nozzle 20, it also includes: a pressure sensor detects the suction pressure of the compressor, and when the suction pressure is lower than a preset pressure threshold, the controller controls to open the first control switch 101 and the second control switch 301.

[0078] In the above implementation process, when the air conditioner is in the heating condition, the heat absorption and evaporation in the heat exchanger 200 will produce condensed water, and the condensed water condenses and adheres to the heat exchanger 200, affecting the heat exchange effect. At this time, when the pressure sensor detects that the suction pressure of the compressor is lower than the preset pressure threshold, it means that the heat exchanger 200 needs to be defrosted. The pressure sensor sends a spray signal to the controller. After receiving the spray signal, the controller controls the opening of the first control switch 101 and the second control switch 301, thereby realizing defrosting by spraying a mixed solution on the heat exchanger 200, which effectively improves the automation level of defrosting of the heat exchanger 200.

[0079] In a possible implementation, the method further includes: when the pressure sensor detects that the inhalation pressure is not lower than a preset pressure threshold, the controller controls closing the first control switch 101 and the second control switch 301 .

[0080] In the above implementation process, after a period of defrosting, when the pressure detector detects that the suction pressure of the compressor returns to the preset pressure threshold, the pressure detector sends a stop spraying signal to the controller. At this time, the controller controls the closing of the first control switch 101 and the second control switch 301 to stop the mixed solution from being introduced into the water inlet pipe 10, i.e., stop defrosting.

[0081] In a possible implementation, the method further includes: when the operating condition is cooling, the controller controls closing the second control switch 301 and opening the first control switch 101.

[0082] In the above implementation process, when the air conditioner is in the cooling condition, the surface temperature of the heat exchanger 200 is relatively high and no defrosting is required. The controller controls the second control switch 301 to be closed and the first control switch 101 to be opened to stop the addition of solvent into the water inlet pipe 10 and to introduce spray water into the water inlet pipe 10. At this time, the nozzle 20 only sprays spray water onto the heat exchanger 200, and the spray water absorbs heat and evaporates on the surface of the heat exchanger 200, thereby cooling the heat exchanger 200 and effectively improving the cooling efficiency of the air conditioner.

[0083] In one possible implementation, a first temperature sensor is provided on the compressor exhaust pipe of the outdoor unit, and a second temperature sensor is provided on the outdoor unit. The first temperature sensor and the second temperature sensor are electrically connected to the controller. Before the controller controls to close the second control switch and open the first control switch, it also includes: the first temperature sensor detects the exhaust temperature of the air conditioner compressor, and the second temperature sensor detects the ambient temperature of the outdoor unit; the controller controls to close the second control switch and open the first control switch when the first temperature sensor detects that the exhaust temperature is greater than the first preset temperature threshold, and the second temperature sensor detects that the ambient temperature reaches the second preset temperature threshold.

[0084] In the above implementation process, when the air conditioner is in a cooling condition, and when the first temperature sensor detects that the exhaust temperature of the compressor is greater than the first preset temperature threshold, and the second temperature sensor detects that the ambient temperature reaches the second preset temperature threshold, it indicates that the heat exchanger 200 needs to be sprayed for cooling. At this time, the controller controls to close the second control switch 301 to prevent the added solvent from entering the water inlet pipe, and opens the first control switch 101 to allow spray water to pass into the water inlet pipe 10, thereby achieving spray cooling of the heat exchanger through the nozzle 20.

[0085] In a possible implementation, a heating device 50 is provided on the water inlet pipe 10 near the nozzle side, and a third temperature sensor is provided in the heating device. Before the controller controls the first control switch 101 and the second control switch 301 to open, so that the added solvent in the solvent tube 30 is mixed with the spray water in the water inlet pipe 10 to form a mixed solution, and the mixed solution is sprayed toward the heat exchanger 200 of the outdoor unit 100 through the nozzle 20, it also includes: the third temperature sensor detects the temperature of the mixed solution in the water inlet pipe 10; if the temperature of the mixed solution is lower than the preset temperature threshold, the heating device 50 is started.

[0086] In the above implementation process, when the heat exchanger 200 needs to be defrosted, since a mixed solution will be stored at one end of the water inlet pipe 10 close to the nozzle 20 after each defrosting, the temperature of the mixed solution in the water inlet pipe 10 can be detected by a third temperature sensor before defrosting. When it is detected that the temperature of the mixed solution in the water inlet pipe 10 is lower than the preset temperature threshold, the heating device 50 heats the mixed solution in the water inlet pipe 10, thereby improving the defrosting effect of the mixed solution, thereby ensuring that the spray system defrosts the heat exchanger 200 reliably.

[0087] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0088] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0089] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A spray system, characterized in that: include: Water inlet pipe; A solvent pipe, connected to the water inlet pipe, for providing an additive solvent, wherein the additive solvent is mixed with the spray water in the water inlet pipe to form a mixed solution, wherein the chemical potential of the mixed solution is lower than the chemical potential of water; A nozzle, connected to the water outlet of the water inlet pipe, for spraying spray water or the mixed solution to the heat exchanger of the air conditioner outdoor unit; The water inlet pipe is provided with a first control switch, and the solvent pipe is provided with a second control switch; The spray system further includes a controller, which is electrically connected to the first control switch and the second control switch and is used to control the opening or closing of the first control switch and / or the second control switch; The spray system also includes: a pressure sensor, which is arranged on the compressor suction pipe of the air conditioner outdoor unit and is electrically connected to the controller. The controller is used to control the opening of the first control switch and the second control switch when the pressure sensor detects that the suction pressure of the compressor is lower than a preset pressure threshold and the air conditioner is in a heating condition.

2. The spray system according to claim 1, characterized in that: The sprinkler system further comprises a control box, which is arranged on the outdoor unit, and the controller, the first control switch and the second control switch are all arranged in the control box.

3. The spray system according to claim 1 or 2, characterized in that: The spray system further comprises: a heating device, at least a portion of the water inlet pipe is located inside the heating device.

4. The spray system according to claim 3, characterized in that: The heating device is arranged close to the nozzle side.

5. The spray system according to claim 3, characterized in that: The height of the water inlet end of the water inlet pipe located in the heating device is not lower than the water outlet end.

6. The spray system according to any one of claims 1-2, characterized in that: One end of the solvent tube is connected to a solvent box, in which an additional solvent is stored, and the other end of the solvent tube is connected to the water inlet pipe.

7. An air conditioner, characterized in that: include: An outdoor unit, wherein the outdoor unit is provided with a heat exchanger; and The spray system according to any one of claims 1 to 6, wherein the spray system is used to spray spray water or a mixed solution onto the heat exchanger.

8. A method for controlling a spray system of an air conditioner, the spray system comprising a water inlet pipe, a solvent pipe, a nozzle, a controller and a pressure sensor, the water inlet pipe is connected to a nozzle, the nozzle outlet of the nozzle faces a heat exchanger, the solvent pipe is connected to the water inlet pipe, and is used to provide an additive solvent, the chemical potential of the mixed solution formed by the additive solvent and the spray water is lower than that of water, and the water inlet pipe and the solvent pipe are respectively provided with a first control switch and a second control switch, the controller is respectively electrically connected to the first control switch, the second control switch and the pressure sensor, the pressure sensor is used to detect the suction pressure of the compressor of the air conditioner outdoor unit, characterized in that, The method comprises: Acquire the operating conditions of the air conditioner, wherein the operating conditions include cooling and heating; When the operating condition is heating, the controller controls the first control switch on the water inlet pipe and the second control switch on the solvent pipe to open, so that the added solvent in the solvent pipe is mixed with the spray water in the water inlet pipe to form a mixed solution, and the mixed solution is suitable for spraying to the heat exchanger of the outdoor unit through the nozzle.

9. The method according to claim 8, characterized in that Before the controller controls the first control switch and the second control switch to be turned on so that the added solvent in the solvent pipe is mixed with the spray water in the water inlet pipe to form a mixed solution, and the mixed solution is sprayed toward the heat exchanger of the outdoor unit through the nozzle, the method further includes: The pressure sensor detects the suction pressure of the compressor. When the suction pressure is lower than a preset pressure threshold, the controller controls to turn on the first control switch and the second control switch.

10. The method according to claim 9, characterized in that The method further comprises: When the pressure sensor detects that the suction pressure is not lower than the preset pressure threshold, the controller controls to close the first control switch and the second control switch.

11. The method according to any one of claims 8 to 10, characterized in that: The method further comprises: When the operating condition is cooling, the controller controls to close the second control switch and to open the first control switch.

12. The method according to claim 11, wherein a first temperature sensor is provided on the compressor exhaust pipe of the outdoor unit, and a second temperature sensor is provided on the outdoor unit, and the first temperature sensor and the second temperature sensor are electrically connected to the controller, characterized in that: Before the controller controls to close the second control switch and to open the first control switch, the method further includes: The first temperature sensor detects the exhaust temperature of the compressor of the air conditioner, and the second temperature sensor detects the ambient temperature of the outdoor unit; The controller controls closing the second control switch and opening the first control switch when the first temperature sensor detects that the exhaust temperature is greater than a first preset temperature threshold and the second temperature sensor detects that the ambient temperature reaches a second preset temperature threshold.

13. The method according to any one of claims 8 to 10, wherein a heating device is provided on the water inlet pipe near the nozzle side, and a third temperature sensor is provided in the heating device, characterized in that: Before the controller controls the first control switch and the second control switch to be turned on so that the added solvent in the solvent pipe is mixed with the spray water in the water inlet pipe to form a mixed solution, and the mixed solution is sprayed toward the heat exchanger of the outdoor unit through the nozzle, the method further includes: The third temperature sensor detects the temperature of the mixed solution in the water inlet pipe; If the temperature of the mixed solution is lower than a preset temperature threshold, the heating device is started.

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