Cooling structure, air conditioner and control method

Abstract

The application provides a cooling structure, an air conditioner and a control method. The cooling structure comprises a heat exchange component for absorbing heat; a water receiving tray connected with the heat exchange component; the water receiving tray comprises a water receiving groove, a heat exchange coil pipe is arranged in the water receiving groove, and the water receiving groove is located below the heat exchange component; a liquid level sensor for measuring the height of the liquid level in the water receiving groove; a drainage assembly connected with the water receiving tray to drain the condensed water in the water receiving tray; and a control module in signal connection with the drainage assembly to control the drainage assembly to start or stop draining the condensed water in the water receiving groove. The control module is in signal connection with the liquid level sensor. The cooling structure of the embodiment solves the technical problem that the structure for utilizing the condensed water in the air conditioner is relatively complex.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, specifically to a cooling structure, an air conditioner, and a control method. Background Technology

[0002] When the indoor unit is cooling, condensate will continuously be produced because the coil temperature is lower than the air dew point temperature. In conventional indoor units, the condensate is usually collected directly in a drip tray and then drained through a drain pipe to prevent it from accumulating at the bottom of the indoor heat exchanger and affecting its operation. However, because the condensate is at a low temperature, it has potential utilization value.

[0003] However, existing structures that utilize condensate typically employ sleeves or extended pipes to divert and utilize the condensate. This results in a more complex indoor unit structure, necessitating changes to the unit's external dimensions and hindering manufacturing processes.

[0004] Therefore, existing technologies need further development. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a cooling structure, an air conditioner, and a control method to solve the technical problem of the relatively complex structure of air conditioners utilizing condensate in related technologies.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution: A cooling structure is provided, comprising: a heat exchange component for absorbing heat; a water receiving tray connected to the heat exchange component; the water receiving tray includes a water trough, in which a heat exchange coil is disposed, and the water trough is located below the heat exchange component; a liquid level sensor for measuring the height of the liquid level in the water trough; a drainage component connected to the water receiving tray to drain condensate from the water receiving tray; and a control module connected to the drainage component to control the drainage component to open or stop draining condensate from the water trough; the control module is also connected to the liquid level sensor.

[0007] Furthermore, the cooling structure also includes: a distributor connected to the heat exchange coil; a capillary tube, one end of which is connected to the distributor and the other end of which is connected to the heat exchange component; there are multiple capillary tubes.

[0008] Furthermore, the cooling structure also includes: an expansion valve, which is mounted on the heat exchange coil; a first temperature sensor, which is mounted on the heat exchange coil and located between the heat exchange coil and the distributor; the first temperature sensor is connected to the control module via signal connection; and a second temperature sensor, which is mounted on the capillary tube; the second temperature sensor is also connected to the control module via signal connection.

[0009] Further, the water receiving tray includes: a first tray body with a water receiving groove located therein; a second tray body connected to the first tray body and located above the water receiving groove; and a heat exchange component connected to the second tray body, the extending direction of the heat exchange component being inclined relative to the horizontal direction.

[0010] Further, the drainage assembly includes: a water suction pipe connected to the water receiving groove; a water pump disposed on the water suction pipe and in signal connection with the control module.

[0011] Further, the cooling structure further includes: a water isolation baffle connected to the water receiving tray and disposed in the water receiving groove to divide the water receiving groove into a first water receiving groove and a second water receiving groove; the water suction pipe is connected to the first water receiving groove; a drain pipe, one end of the drain pipe is connected to the second water receiving groove, and the other end of the drain pipe is connected to the outside of the water receiving groove.

[0012] Further, the cooling structure further includes a timer in signal connection with the control module.

[0013] An air conditioner includes: an indoor unit including the above cooling structure; an indoor unit inlet pipe connected to the indoor unit to introduce refrigerant into the indoor unit; an inlet pipe temperature sensor disposed on the indoor unit inlet pipe and in signal connection with the control module; an indoor unit outlet pipe connected to the indoor unit to lead out the refrigerant in the indoor unit; an outlet pipe temperature sensor disposed on the indoor unit outlet pipe and in signal connection with the control module.

[0014] Further, applicable to the above air conditioner, the control method includes: determining whether the cooling structure needs refrigeration; if so, controlling the drainage assembly to drain water; setting a liquid level threshold H0, determining the magnitude relationship between the liquid level value H measured by the liquid level sensor and H0, when H < H0, controlling the drainage assembly not to drain water; setting a liquid level threshold ΔH, determining the magnitude relationship between the liquid level value H measured by the liquid level sensor and H1, when H ≥ H1 - ΔH, controlling the drainage assembly to drain water; wherein, H1 is the depth of the water receiving groove located below the heat exchange component.

[0015] Further, the control method includes: determining the magnitude relationship between the superheat degree T of the indoor unit and the threshold T1; if T continuously remains less than T1 within the t2 time period, controlling the drainage assembly to drain water; wherein, the superheat degree T of the indoor unit is the difference between the temperature of the refrigerant in the indoor unit inlet pipe and the temperature of the refrigerant in the indoor unit outlet pipe.

[0016] Further, the control method includes: if T does not satisfy continuously remaining less than T1 within the t2 time period, determining the relationship between the superheat degree of the gas-liquid separator of the outdoor unit and the threshold T2; if the superheat degree of the gas-liquid separator continuously remains less than T2 within the t3 time period, controlling the drainage assembly to drain water; wherein, the superheat degree T of the gas-liquid separator is the difference between the temperature of the refrigerant before entering the gas-liquid separator and the temperature of the refrigerant flowing out of the gas-liquid separator.

[0017] Beneficial effects: Using the condensate produced during indoor unit cooling for heat exchange with the refrigerant can effectively increase the refrigerant's subcooling and improve cooling efficiency. The amount of condensate affects the unit's operating condition and safety. This proposal addresses how to adjust the amount of condensate in the indoor unit based on the unit's status parameters. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the cooling structure used in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the cooling structure used in Embodiment 2 of the present invention; Figure 3 This is a schematic diagram of the cooling structure used in Embodiment 3 of the present invention; Figure 4 This is a front view of the cooling structure used in an embodiment of the present invention; Figure 5 This is a schematic diagram of the water receiving tray of the cooling structure provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the air conditioner provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the control logic of an air conditioner provided in an embodiment of the present invention.

[0019] The above figures include the following reference numerals: 10. Indoor unit; 20. Indoor unit inlet pipe; 30. Inlet pipe temperature sensor; 40. Indoor unit outlet pipe; 50. Outlet pipe temperature sensor; 1. Heat exchange component; 2. Capillary tube; 3. Dispenser; 4. Expansion valve; 5. Heat exchange coil; 6. Water receiving tray; 61. First water receiving trough; 62. Water-proof baffle; 63. Second water receiving trough; 64. Drain pipe; 60. Water receiving trough; 601. First tray body; 602. Second tray body; 70. Drainage assembly; 71. Suction pipe; 72. Connecting pipe; 7. Water pump. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] See Figures 1 to 7According to an embodiment of the present invention, a cooling structure is provided, comprising: a heat exchange component 1 for absorbing heat; a water receiving tray 6 connected to the heat exchange component 1; the water receiving tray 6 includes a water receiving trough 60, in which a heat exchange coil 5 is disposed, and the water receiving trough 60 is located below the heat exchange component 1; a liquid level sensor for measuring the height of the liquid level in the water receiving trough 60; a drainage assembly 70 connected to the water receiving tray 6 to drain condensate from the water receiving tray 6; and a control module connected to the drainage assembly 70 to control the drainage assembly 70 to start or stop draining condensate from the water receiving trough 60; the control module is also connected to the liquid level sensor.

[0022] With the above configuration, when the heat exchange component 1 is running, the condensate generated on its surface falls into the water collection pan 6. The condensate is used to exchange heat with the heat exchange coil 5 in the water collection pan 6. By setting a liquid level sensor, the amount of condensate in the water collection pan 6 can be sensed, and the operating status can be judged based on whether the cooling structure has cooling capacity and various indicators. The amount of condensate is controlled by the drainage component 70 according to different situations, thereby achieving the effect of effectively using the water collection pan 6 to control the condensate to exchange heat with the heat exchange coil 5. This solves the technical problem of the relatively complex structure of using condensate in air conditioners.

[0023] See Figures 1 to 3 In the cooling structure of this embodiment, the cooling structure further includes: a distributor 3, which is connected to the heat exchange coil 5; a capillary tube 2, one end of which is connected to the distributor 3, and the other end of which is connected to the heat exchange component 1; there are multiple capillary tubes 2. In this way, by connecting the heat exchange component 1 to the heat exchange coil 5, the heat exchange effect of the condensate is effectively utilized, and a refrigerant flow circulation is generated, thereby improving the utilization efficiency of the condensate.

[0024] In the cooling structure of this embodiment, see Figures 1 to 3 The cooling structure also includes: an expansion valve 4, which is mounted on the heat exchange coil 5; a first temperature sensor, which is mounted on the heat exchange coil 5 and located between the heat exchange coil 5 and the distributor 3; the first temperature sensor is connected to the control module via signal; and a second temperature sensor is mounted on the capillary tube 2; the second temperature sensor is also connected to the control module via signal.

[0025] By adopting the above settings, the superheat index in the air conditioner is used to control the amount of condensate in the drip tray 6. Combined with multiple indicators to judge the operating status, the drip tray 6 is used efficiently to control the condensate to exchange heat with the heat exchange coil 5.

[0026] In the cooling structure of this embodiment, the water receiving tray 6 includes: a first tray body 601, with a water receiving trough 60 located inside the first tray body 601; a second tray body 602 connected to the first tray body 601, located above the water receiving trough 60; and a heat exchange component 1 connected to the second tray body 602, with the extension direction of the heat exchange component 1 inclined relative to the horizontal direction. This arrangement allows the heat exchange component 1 to be placed at an incline, and the second tray body 602 to also be inclined, enabling the condensate generated on the heat exchange component 1 to smoothly flow into the water receiving trough 60, thereby effectively collecting the condensate.

[0027] To achieve the effect of draining the condensate in the water collection tank 60, see [link / reference]. Figures 1 to 3 In the cooling structure of this embodiment, the drainage component 70 includes: a water suction pipe 71, which is connected to the water receiving tank 60; and a water pump 7, which is mounted on the water suction pipe 71 and is connected to the control module via signal.

[0028] In the cooling structure of this embodiment, the cooling structure further includes: a water-isolated baffle 62, which is connected to the water receiving tray 6 and is disposed in the water receiving trough 60 to divide the water receiving trough 60 into a first water receiving trough 61 and a second water receiving trough 63; a water suction pipe 71 connected to the first water receiving trough 60; and a drain pipe 64, one end of which is connected to the second water receiving trough 60 and the other end of which is connected to the outside of the water receiving trough 60.

[0029] Specifically, in some embodiments, the height of the water-blocking baffle 62 is lower than that of the heat exchange component 1 to ensure that the liquid level of the condensate does not reach the position of the heat exchange component 1, thereby ensuring the safety of the cooling structure.

[0030] With the above configuration, if the indoor unit's water receiving tray 6 is equipped with a water-blocking baffle 62 and a drain pipe 64, when the level of condensate in the water receiving tank 60 is too high, it can automatically flow out of the water receiving tank 60.

[0031] In the cooling structure of this embodiment, a timer is also included, and the timer is signal-connected to the control module. This allows for long-term monitoring to obtain data on the sufficient circulation of the refrigerant in the system, improving the control accuracy of the cooling structure.

[0032] See Figure 6 The air conditioner in this embodiment includes: an indoor unit 10, which includes the cooling structure described above; an indoor unit inlet pipe 20 connected to the indoor unit 10 to introduce refrigerant into the indoor unit 10; an inlet pipe temperature sensor 30 provided on the indoor unit inlet pipe 20, which is signal-connected to the control module; an indoor unit outlet pipe 40 connected to the indoor unit 10 to lead out the refrigerant from the indoor unit 10; and an outlet pipe temperature sensor 50 provided on the indoor unit outlet pipe 40, which is signal-connected to the control module.

[0033] With the above settings, the superheat index in the air conditioner is used to control the amount of condensate water in the water receiving tray 6, and multiple indicators are combined to judge the operating conditions, efficiently using the water receiving tray 6 to control the heat exchange of the heat exchange coil 5 by the condensate water.

[0034] The control method of this embodiment is applicable to the above-mentioned air conditioner. The control method includes: judging whether the cooling structure needs to refrigerate; if so, controlling the drainage component 70 to drain water; setting a liquid level threshold H0, judging the magnitude relationship between the liquid level value H measured by the liquid level sensor and H0, and when H < H0, controlling the drainage component 70 not to drain water; setting a liquid level threshold ΔH, judging the magnitude relationship between the liquid level value H measured by the liquid level sensor and H1, and when H ≥ H1 - ΔH, controlling the drainage component 70 to drain water; where H1 is the depth of the water receiving tank 60 located below the heat exchange component 1. In this way, by setting a variable, the amount of water in the water receiving tank 60 is controlled so that the amount of water is neither too much nor too little.

[0035] Specifically, referring to Figure 4 , in some embodiments, ΔH = H1 - H2, where H2 is the maximum distance between the heat exchange coil 5 and the bottom of the water receiving tank 60.

[0036] The control method of this embodiment includes: judging the magnitude relationship between the superheat T of the indoor unit and the threshold T1; if T continuously is less than T1 within the t2 time period, controlling the drainage component 70 to drain water; where the superheat T of the indoor unit is the difference between the temperature of the refrigerant in the indoor unit inlet pipe 20 and the temperature of the refrigerant in the indoor unit outlet pipe 40.

[0037] The control method of this embodiment includes: if T does not satisfy continuously being less than T1 within the t2 time period, judging the relationship between the superheat of the gas-liquid separator of the outdoor unit and the threshold T2; if the superheat of the gas-liquid separator continuously is less than T2 within the t3 time period, controlling the drainage component 70 to drain water; where the superheat T of the gas-liquid separator is the difference between the temperature of the refrigerant before entering the gas-liquid separator and the temperature of the refrigerant flowing out of the gas-liquid separator.

[0038] In the control method of this embodiment, the control method includes: if T does not satisfy continuously being less than T1 within the t2 time period, judging the relationship between the superheat of the gas-liquid separator of the outdoor unit and the threshold T2; if the superheat of the gas-liquid separator continuously is less than T2 within the t3 time period, controlling the drainage component 70 to drain water; where the superheat T of the gas-liquid separator is the difference between the temperature of the refrigerant before entering the gas-liquid separator and the temperature of the refrigerant flowing out of the gas-liquid separator. Specifically, the above steps can be carried out on the premise that H > H0, so that it can be ensured that the water receiving tank 60 stores a sufficient amount of condensate water to exchange heat for the heat exchange coil 5.

[0039] The description of the cooling structure of this embodiment is as follows: Referring to Figure 4 , Figure 5 , during the refrigeration operation, the low-temperature refrigerant evaporates in the heat exchange component 1, absorbing the heat in the air to achieve the cooling effect. At the same time, the air drops below the dew point temperature, and the contained moisture will condense on the fins and pipes of the heat exchange component 1 and flow down along them, being stored in the water receiving tray 6. A section of heat exchange coil 5 is also provided in the water receiving tray 6 and will be submerged in the condensed water in the water receiving tray 6 under certain operating conditions. Since the condensed water has a low temperature, it will absorb the heat of the refrigerant in the heat exchange coil 5, achieving refrigerant subcooling, increasing the heat transfer amount, and improving the refrigeration energy efficiency. In addition, the cooling structure also has a water pump 7, whose suction pipe 71 is located in the water receiving tray 6 and the drain pipe 64 is located outside the indoor unit, which can absorb the water in the water receiving tray 6 and discharge it from the indoor unit, achieving the effect of controlling the water level in the water receiving tray 6.

[0040] Embodiment 1: Refer to Figure 1 , the condensed water falls into the water receiving tank 60, and by controlling the water pump 7, the amount of condensed water in the water receiving tank 60 is controlled.

[0041] Embodiment 2: Refer to Figure 2 , the condensed water falls into the water receiving tank 60, and by controlling the water pump 7, the amount of condensed water in the water receiving tank 60 is controlled. When the water volume is too high, the condensed water submerges the water separation baffle 62 and is discharged through the drain pipe 64, and there is no need to control it with the water pump 7 anymore.

[0042] Embodiment 3: The suction pipe 71 is connected to the connecting pipe 72. One end of the connecting pipe 72 is connected to the suction pipe 71, and the other end of the connecting pipe 72 is connected to the drain pipe 64. The condensed water flowing out of the suction pipe 71 can directly be discharged from the drain pipe 64.

[0043] As Figure 7 shown, the control logic of the air conditioner in this embodiment is as follows: S101, continuously detect whether the indoor unit has refrigeration capacity. When there is no refrigeration capacity, such as when it is shut down, the water pump 7 is turned on to drain the condensed water in the water receiving tray 6 to prevent the indoor unit from storing water for a long time, resulting in hygienic problems such as bacteria breeding or mold growth. In this case, if the detected water level H < H0, it is considered that the condensed water has been basically completely drained, where H0 is a very small amount and can be taken as 1 mm.

[0044] When it has refrigeration capacity, enter S102, continuously detect the water level. If H < H0 is satisfied, it is considered that there is no condensed water in the water receiving tray, and the water pump 7 is turned off.

[0045] If H < H0 is not satisfied, it is considered that there is condensate water in the water receiving tray, and S103 is entered to further determine whether H ≥ H1 - ΔH is satisfied. If H ≥ H1 - ΔH is satisfied, it is considered that the water level in the water receiving tray is full. In this case, the water pump 7 is turned on for a duration of t1 to discharge some condensate water to prevent the immersion of the heat exchange component 11. Here, ΔH is an extremely small amount, and a value of 1 mm can be taken. The recommended value of t1 is 5 s.

[0046] If H ≥ H1 - ΔH is not satisfied, S104 is entered to further adjust the condensate water level according to the superheat degree: determine whether the indoor unit superheat degree < T1 and the duration satisfying this condition > t2. If S104 is satisfied, the water pump 7 is turned on for a duration of t4 to discharge some condensate water, weaken the subcooling effect of the condensate water on the refrigerant, promote the evaporation of the refrigerant, and increase its superheat degree. Here, the indoor unit superheat degree is defined as the value obtained by subtracting the inlet pipe temperature from the outlet pipe temperature of the indoor unit, and the indoor unit superheat degree is a common indicator for measuring the evaporation degree of the refrigerant in the indoor unit. After the water pump 7 is turned on for a duration of t4, the water pump 7 is turned off, and after waiting for a time of t5, the detection is returned. The reason for setting the waiting time t5 is that due to the certain inertia of heat exchange, it is necessary to wait for a period of time to make the adjustment of the water level reflected in the change of the pipe temperature before continuing the detection and adjustment. Here, T1, t2, t4, and t5 are set values, and the recommended values are 2 °C, 2 min, 10 s, and 2 min respectively.

[0047] If S104 is not satisfied, it means that the indoor unit superheat degree is acceptable, and S105 is continued to determine whether the superheat degree of the gas-liquid separator < T2 and the duration satisfying this condition > t3. If S105 is satisfied, the water pump 7 is turned on for a duration of t4 to discharge some condensate water, weaken the subcooling effect of the condensate water on the refrigerant, promote the evaporation of the refrigerant, and increase the superheat degree of the gas-liquid separator. After the water pump 7 is turned on for t4, the water pump 7 is turned off, and after waiting for a time of t5, the detection is returned. Here, T2 and t3 are set values, and the recommended values are 2 °C and 2 min respectively.

[0048] This proposal can not only separately control the water level of the water receiving tray of any indoor unit according to the superheat degree of each indoor unit to meet the requirements of the indoor unit, but also control the water level of the indoor unit according to the superheat degree of the gas-liquid separator of the outdoor unit, which can further ensure the superheat of the outlet pipe of the gas-liquid separator to prevent the liquid hammer problem of the compressor. The two are controlled separately because even if the indoor unit superheat is ensured, due to separation efficiency or other reasons, the outlet pipe of the gas-liquid separator may still not be superheated, that is, the outlet pipe refrigerant carries liquid, causing damage to the compressor. The former is for performance consideration, while the latter maintains the safety and reliability of the system operation.

[0049] If S105 is not satisfied, the detection is returned.

[0050] If a water baffle 62 and a drain pipe 64 are provided on the indoor unit water receiving tray, step S103 can be reduced.

[0051] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0052] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0053] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0054] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0055] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A control method, characterized in that, The control method is applied to an air conditioner, which includes: An indoor unit (10), which includes a cooling structure; The cooling structure includes: A heat exchange component (1) for absorbing heat; A water receiving tray (6), which is connected to the heat exchange component (1); the water receiving tray (6) includes a water receiving groove (60), and a heat exchange coil (5) is arranged in the water receiving groove (60), and refrigerant is used to flow in the heat exchange coil (5); the water receiving groove (60) is located below the heat exchange component (1); A liquid level sensor for measuring the height of the liquid level in the water receiving groove (60); A drainage component (70), which is connected to the water receiving tray (6) to drain the condensed water in the water receiving tray (6); A control module, which is signal-connected to the drainage component (70) to control the drainage component (70) to start or stop draining the condensed water in the water receiving groove (60); the control module is signal-connected to the liquid level sensor; An indoor unit inlet pipe (20), which is connected to the indoor unit (10) to introduce refrigerant into the indoor unit (10); an inlet pipe temperature sensor (30) is arranged on the indoor unit inlet pipe (20), and the inlet pipe temperature sensor (30) is signal-connected to the control module; An indoor unit outlet pipe (40), which is connected to the indoor unit (10) to lead out the refrigerant in the indoor unit (10); an outlet pipe temperature sensor (50) is arranged on the indoor unit outlet pipe (40), and the outlet pipe temperature sensor (50) is signal-connected to the control module; The control method includes: Judging the magnitude relationship between the superheat degree T of the indoor unit and the threshold value T1; If T is continuously less than T1 within the time period t2, then control the drainage component (70) to drain water; Wherein, the superheat degree T of the indoor unit is the difference between the temperature of the refrigerant in the indoor unit inlet pipe (20) and the temperature of the refrigerant in the indoor unit outlet pipe (40); 2. The control method according to claim 1, characterized in that, An expansion valve is arranged between the heat exchange coil and the heat exchange component. The control method further includes: Judging whether the cooling structure needs to be refrigerated; If so, then control the drainage component (70) to drain water; Set a liquid level threshold value H0, judge the magnitude relationship between the liquid level value H measured by the liquid level sensor and H0, and when H < H0, then control the drainage component (70) not to drain water; 3. The control method according to claim 1, characterized in that, Set a liquid level threshold value ΔH, judge the magnitude relationship between the liquid level value H measured by the liquid level sensor and H1, and when H ≥ H1 - ΔH, then control the drainage component (70) to drain water; wherein, H1 is the depth of the water receiving groove (60) located below the heat exchange component (1). The control method includes: If T does not satisfy being continuously less than T1 within the time period t2, then judge the relationship between the superheat degree of the gas-liquid separator of the outdoor unit and the threshold value T2; If the superheat degree of the gas-liquid separator is continuously less than T2 within the time period t3, then control the drainage component (70) to drain water; 4. A cooling structure, applicable to the control method according to any one of claims 1-3, characterized in that, Wherein, the superheat degree T of the gas-liquid separator is the difference between the temperature of the refrigerant before entering the gas-liquid separator and the temperature of the refrigerant flowing out of the gas-liquid separator. The cooling structure further includes: The liquid separator (3) is connected to the heat exchange coil (5); Capillary tube (2), one end of which is connected to the liquid separator (3), and the other end of which is connected to the heat exchange component (1); there are multiple capillary tubes (2).

5. The cooling structure according to claim 4, characterized in that, The cooling structure also includes: A first temperature sensor is installed on the heat exchange coil (5) and is located between the heat exchange coil (5) and the distributor (3); the first temperature sensor is connected to the control module via signal connection. A second temperature sensor is disposed on the capillary tube (2); the second temperature sensor is connected to the control module via signal connection.

6. The cooling structure according to claim 4, characterized in that, The water receiving tray (6) includes: The first plate (601) has the water receiving tank (60) located inside it; The second plate (602) is connected to the first plate (601) and is located above the water receiving tank (60); the heat exchange component (1) is connected to the second plate (602) and the extension direction of the heat exchange component (1) is inclined relative to the horizontal direction.

7. The cooling structure according to claim 4, characterized in that, The drainage assembly (70) includes: A water suction pipe (71) is connected to the water receiving tank (60); A water pump (7) is installed on the suction pipe (71) and is signal-connected to the control module.

8. The cooling structure according to claim 7, characterized in that, The cooling structure also includes: A water-blocking baffle (62) is connected to the water receiving tray (6). The water-blocking baffle (62) is disposed in the water receiving trough (60) to divide the water receiving trough (60) into a first water receiving trough (61) and a second water receiving trough (63). The water suction pipe (71) is connected to the first water receiving trough (61). A drain pipe (64) is provided, one end of which is connected to the second water receiving tank (63), and the other end of which is connected to the outside of the water receiving tank (60).

9. The cooling structure according to any one of claims 5 to 8, characterized in that, The cooling structure also includes a timer, which is signal-connected to the control module.

10. An air conditioner, characterized in that, Includes the cooling structure as described in claim 9.

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