Air conditioner and control method thereof

Abstract

The invention discloses an air conditioner and a control method thereof. The air conditioner comprises a main body provided with a refrigeration side heat exchange air duct, a heating side heat exchange air duct, a compressor and a water pan, and the water pan is arranged to guide condensate water of the refrigeration side heat exchange air duct to the heating side heat exchange air duct; a heating side heat exchanger and a heating side heat exchange fan; a refrigeration-side heat exchanger; the water beating device is arranged to whip the condensate water in the water pan to the heating side heat exchanger, so that the heat exchange performance of the heating side heat exchanger can be improved; the water level switch is arranged on the water pan and is triggered when condensate water in the water pan reaches a set water level, and the set water level is higher than the lowest water fetching water level of the water fetching device; and the control device is electrically connected with the compressor, the heating side heat exchange fan, the water fetching device and the water level switch, and is arranged to control the heating side heat exchange fan, the water fetching device and the compressor according to the state information of the water level switch, so that the heat exchange performance of the heating side heat exchanger is improved, and meanwhile, the condensate water in the water pan is prevented from continuously increasing and overflowing.

Description

Technical Field

[0001] The present application relates to but is not limited to the technical field of electrical equipment, and specifically refers to an air conditioner and a control method thereof. Background Art

[0002] The related technology provides an integrated air conditioner, including a main body, a cooling side heat exchanger, a heating side heat exchanger, a cooling side heat exchange fan and a heating side heat exchange fan. The main body is provided with a cooling side heat exchange air duct, a heating side heat exchange air duct and a water receiving pan. The cooling side heat exchanger and the cooling side heat exchange fan are both arranged in the cooling side heat exchange air duct, the heating side heat exchanger and the heating side heat exchange fan are both arranged in the heating side heat exchange air duct, and the condensed water generated by the cooling side heat exchanger is discharged to the heating side through the water receiving pan. The heat exchange performance of the heating side heat exchanger of this integrated air conditioner is poor. How to improve the heat exchange performance of the heating side heat exchanger is a technical problem that technicians in this field have been committed to solving. Summary of the invention

[0003] The present application provides an air conditioner whose heating-side heat exchanger has better heat exchange performance.

[0004] The present application also provides a method for controlling an air conditioner.

[0005] An air conditioner provided in an embodiment of the present invention comprises: a main body, provided with a cooling side heat exchange air duct, a heating side heat exchange air duct, a compressor and a water receiving pan, wherein the water receiving pan is configured to guide condensed water of the cooling side heat exchange air duct to the heating side heat exchange air duct;

[0006] The heating-side heat exchanger and the heating-side heat exchange fan are both arranged in the heating-side heat exchange air duct; the cooling-side heat exchanger is arranged in the cooling-side heat exchange air duct; the first water pumping device and the second water pumping device are arranged in the water receiving tray, and are arranged to stir the condensed water in the water receiving tray to the heating-side heat exchanger, and the minimum water pumping level of the first water pumping device is lower than the minimum water pumping level of the second water pumping device; the water level switch is arranged in the water receiving tray, and is arranged to be triggered based on the condensed water in the water receiving tray reaching a set water level, and the set water level is higher than the minimum water pumping level of the second water pumping device; the control device is electrically connected to the heating-side heat exchange fan, the first water pumping device, the second water pumping device and the water level switch, and is arranged to control the heating-side heat exchange fan, the first water pumping device and the second water pumping device according to the status information of the water level switch.

[0007] In some exemplary embodiments, the water receiving tray is provided with a second water collecting tank, and the water level switch is provided in the second water collecting tank.

[0008] In some exemplary embodiments, the air conditioner further includes a first driving motor, the water receiving tray is provided with a first water collecting tank, the first water pumping device and the second water pumping device are provided in the first water collecting tank and are drivingly connected to the first driving motor.

[0009] In some exemplary embodiments, the first water-pumping device is a first water-pumping wheel, and the second water-pumping device is a second water-pumping wheel, and a diameter of the second water-pumping wheel is smaller than a diameter of the first water-pumping wheel.

[0010] In some exemplary embodiments, the heating-side heat exchange fan is located on one side of the heating-side heat exchanger, the second water-pumping device is closer to the heating-side heat exchange fan than the first water-pumping device, and the first water-pumping device is closer to the subcooling section of the heating-side heat exchanger than the second water-pumping device.

[0011] In some exemplary embodiments, the main body is further provided with a partition plate, the cooling-side heat exchange air duct and the heating-side heat exchange air duct are located on both sides of the partition plate, and the compressor is located in the heating-side heat exchange air duct.

[0012] In some exemplary embodiments, the air conditioner further comprises:

[0013] The refrigeration side heat exchange fan is arranged in the refrigeration side heat exchange air duct, and the refrigeration side heat exchange fan includes a second drive motor, a wind wheel and a volute. The main body is also provided with a waterproof cavity. The body of the second drive motor is arranged in the waterproof cavity. The volute is located between the water receiving tray and the waterproof cavity. The wind wheel is located in the volute and is transmission-connected to the second drive motor.

[0014] In some exemplary embodiments, the waterproof cavity is located above the water receiving tray, and the waterproof cavity is provided with a through hole for the rotating shaft of the second driving motor to pass through.

[0015] In some exemplary embodiments, the control device is also electrically connected to the compressor, and is further configured to control the compressor according to status information of the water level switch.

[0016] The control method of the air conditioner provided in the embodiment of the present invention includes:

[0017] Controlling the first water pumping device and the second water pumping device to operate at a first set speed, controlling the heating-side heat exchange fan to operate at a fourth set speed, and controlling the compressor to operate at a first set frequency;

[0018] The state information of the water level switch is obtained, and the first water pumping device, the second water pumping device and the heating-side heat exchange fan are controlled according to the state information of the water level switch.

[0019] In some exemplary embodiments, the step of controlling the first water pumping device, the second water pumping device and the heating-side heat exchange fan according to the status information of the water level switch includes:

[0020] Based on the status information that the water level switch is triggered, the first water pumping device and the second water pumping device are controlled to operate at a second set speed, and the heating side heat exchange fan is controlled to operate at a fifth set speed, the second set speed is greater than the first set speed, and the fifth set speed is less than the fourth set speed.

[0021] In some exemplary embodiments, the step of controlling the first water pumping device, the second water pumping device and the heating-side heat exchange fan according to the status information of the water level switch further includes:

[0022] Based on the duration of the water level switch being triggered not reaching the first set time, the first water pumping device and the second water pumping device are controlled to operate at the third set speed for the second set time and then operate at the first set speed, the third set speed is greater than the first set speed, and the heating side heat exchange fan is controlled to operate at the fourth set speed.

[0023] In some exemplary embodiments, the control method further includes: controlling the compressor according to the status information of the water level switch.

[0024] In some exemplary embodiments, the step of controlling the compressor according to the status information of the water level switch includes:

[0025] Based on the duration of the water level switch being triggered reaching a first set time, the compressor is controlled to operate at a second set frequency, where the second set frequency is greater than or equal to 0 and less than the first set frequency, and then the status information of the water level switch is obtained again, and the first water pumping device, the second water pumping device, the heating side heat exchange fan and the compressor are controlled according to the status information of the water level switch obtained again.

[0026] In some exemplary embodiments, the step of controlling the first water pumping device, the second water pumping device, the heating-side heat exchange fan and the compressor according to the state information of the water level switch acquired again includes:

[0027] Based on the status information of the water level switch obtained again that the water level switch is not triggered, the compressor is controlled to operate at a third set frequency, the first water pumping device and the second water pumping device are controlled to operate at a sixth set speed for a third set time, and the heating side heat exchange fan is controlled to operate at a fourth set speed, the third set frequency is not greater than the first set frequency, and the sixth set speed is greater than the first set speed; then the steps of controlling the first water pumping device and the second water pumping device to operate at the first set speed, controlling the heating side heat exchange fan to operate at the fourth set speed, and controlling the compressor to operate at the first set frequency are executed.

[0028] According to the technical solution proposed in the embodiment of the present invention, a water receiving pan is configured to guide the condensed water of the heat exchange air duct on the cooling side to the heat exchange air duct on the heating side, the first water pumping device and the second water pumping device are located in the heat exchange air duct on the heating side and are arranged on the water receiving pan, the first water pumping device and the second water pumping device are configured to stir the condensed water in the water receiving pan to the heat exchanger on the heating side, thereby improving the heat exchange performance of the heat exchanger on the heating side; a water level switch is arranged on the water receiving pan, the water level switch is configured to be triggered when the condensed water in the water receiving pan reaches a set water level, and the control device is configured to control the heat exchange fan on the heating side, the first water pumping device and the second water pumping device according to the status information of the water level switch, so as to prevent the condensed water in the water receiving pan from continuing to increase and overflowing while improving the heat exchange performance of the heat exchanger on the heating side. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of a top view of the structure of an air conditioner provided in some embodiments;

[0030] Figure 2 for Figure 1 A partial structural diagram of the air conditioner shown;

[0031] Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure of the middle water tray;

[0032] Figure 4 for Figure 2 A schematic cross-sectional view of the main structure after the middle water tray, the cooling side heat exchanger, the heating side heat exchanger, the water pumping device and the water level switch are assembled;

[0033] Figure 5 A schematic diagram of a front structural cross-sectional view of an air conditioner provided in some other embodiments;

[0034] Figure 6 A flow chart of a method for controlling an air conditioner provided in some embodiments;

[0035] Figure 7 A flow chart of a method for controlling an air conditioner provided in some other embodiments;

[0036] Figure 8 A flowchart of a method for controlling an air conditioner provided in some further embodiments.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] 100 main body, 110 heat exchange air duct on cooling side, 120 heat exchange air duct on heating side, 130 compressor, 140 water collecting pan, 141 second water collecting tank, 142 first installation position, 143 first water collecting tank, 144 second installation position, 145 supporting ribs, 146 supporting platform, 150 partition plate, 160 waterproof cavity, 210 heat exchanger on heating side, 220 heat exchange fan on heating side, 310 heat exchanger on cooling side, 320 heat exchange fan on cooling side, 321 second drive motor, 322 wind wheel, 323 volute, 400 water pumping device, 410 first drive motor, 420 first water pumping wheel, 430 second water pumping wheel, 500 water level switch. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; "connection" can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] The air conditioner provided by the embodiment of the present invention is as follows: Figures 1 to 5 As shown, it includes: a main body 100, the main body 100 is provided with a cooling side heat exchange air duct 110, a heating side heat exchange air duct 120, a compressor 130 and a water receiving tray 140, the water receiving tray 140 is configured to guide the condensed water of the cooling side heat exchange air duct 110 to the heating side heat exchange air duct 120; a heating side heat exchanger 210 and a heating side heat exchange fan 220, the heating side heat exchanger 210 and the heating side heat exchange fan 220 are both arranged in the heating side heat exchange air duct 120; a cooling side heat exchanger 310, the cooling side heat exchanger 310 is arranged in the cooling side heat exchange air duct 110; a water pumping device 400, the water pumping device 400 includes a first water pumping device and a second water pumping device, the first water pumping device and the second water pumping device are arranged in the water receiving tray 140, the water pumping device 40 0 is configured to stir the condensed water in the water receiving tray 140 onto the heating side heat exchanger 210, and the lowest water level of the first water pumping device is lower than the lowest water level of the second water pumping device; a water level switch 500, the water level switch 500 is arranged on the water receiving tray 140, and the water level switch 500 is configured to be triggered based on the condensed water in the water receiving tray 140 reaching a set water level, and the set water level is higher than the lowest water level of the second water pumping device; a control device, the control device is electrically connected to the heating side heat exchange fan 220, the water pumping device 400 and the water level switch 500, and the control device is configured to control the heating side heat exchange fan 220 and the water pumping device 400 according to the status information of the water level switch 500 to prevent the condensed water in the water receiving tray 140 from overflowing.

[0045] When the air conditioner is in operation, the water receiving pan 140 guides the condensed water of the cooling side heat exchange duct 110 to the heating side heat exchange duct 120. The water pumping device 400 is located in the heating side heat exchange duct 120 and is arranged on the water receiving pan 140. The water pumping device 400 stirs the condensed water in the water receiving pan 140 to the heating side heat exchanger 210, so as to improve the heat exchange performance of the heating side heat exchanger 210. The water level switch 500 is arranged on the water receiving pan 140. The water level switch 500 is triggered when the condensed water in the water receiving pan 140 reaches a set water level. The control device controls the heating side heat exchange fan 220 and the water pumping device 400 according to the status information of the water level switch 500, so as to prevent the condensed water in the water receiving pan 140 from continuing to increase and overflow while improving the heat exchange performance of the heating side heat exchanger 210. The pumping device 400 includes a two-stage pumping device, which can consume condensed water more efficiently, and determines the preset water level for triggering the water level switch 500 according to the lowest pumping water level of the second pumping device which is relatively higher than the lowest pumping water level. When the water level switch 500 is triggered, it indicates that the system produces too much water and too much condensed water is not effectively consumed. At this time, the heating side heat exchange fan 220 and the pumping device 400 are controlled to consume condensed water, and the system is more stable with less loss of system capacity. The air conditioner can be an integrated air conditioner. In other examples, the air conditioner can also be a split air conditioner. In some examples, such as Figure 3 and Figure 4 As shown, the water receiving tray 140 is provided with a second water collecting tank 141 which is concave downwards, and the water level switch 500 is provided in the second water collecting tank 141. The water receiving tray 140 is also provided with a first mounting position 142, which is adjacent to the second water collecting tank 141, and the water level switch 500 is fixed in the first mounting position 142 and extends into the second water collecting tank 141. It can be that the water level switch 500 is located in the heat exchange air duct 120 on the heating side; or it can be that the water level switch 500 is located in the heat exchange air duct 110 on the cooling side, etc.; all of the above can achieve the purpose of this application, and its purpose does not deviate from the design concept of the present invention, and will not be repeated here, and all should belong to the protection scope of this application.

[0046] In some examples, such as Figures 1 to 4As shown, the pumping device 400 includes a first drive motor 410 and a pumping wheel. The water receiving tray 140 is also provided with a first water collecting tank 143. The pumping wheel is provided at the first water collecting tank 143 and is in driving connection with the first drive motor 410. The first drive motor 410 is configured to drive the pumping wheel to rotate. The lowest pumping water level of the pumping device 400 is the lowest pumping water level of the pumping wheel. The water receiving tray 140 is also provided with a second mounting position 144. The second mounting position 144 is located on the side of the heating side heat exchanger 210 facing the heating side heat exchange fan 220. The first drive motor 410 is fixed at the second mounting position 144. The first water collecting tank 143 can be located at a lower position in the vertical direction relative to the second water collecting tank 141. The second water collecting tank 141 can be closer to the cooling side heat exchanger 310 relative to the first water collecting tank 143. Between the cooling side heat exchanger 310 and the second water collecting tank 141, the water collecting pan 140 is tilted downward in the direction pointing to the second water collecting tank 141; between the first water collecting tank 143 and the second water collecting tank 141, the water collecting pan 140 is tilted downward in the direction pointing to the first water collecting tank 143; between the first water collecting tank 143 and the heating side heat exchanger 210, the water collecting pan 140 is tilted downward in the direction pointing to the first water collecting tank 143.

[0047] Of course, the second installation position 144 may also be located on the side of the heating side heat exchanger 210 facing away from the heating side heat exchange fan 220, which can also achieve the purpose of this application. Its purpose does not deviate from the design concept of the present invention and will not be repeated here, and it should also fall within the scope of protection of this application.

[0048] In some embodiments, Figure 1 and Figure 2 As shown, there are two water wheels, which are located on both sides of the heating side heat exchanger 210. The two water wheels respectively beat the condensed water to the heating side heat exchanger 210. The two water wheels can be respectively located at different positions of the heating side heat exchanger 210 along the exhaust direction. For example, the two water wheels can be respectively located between different heat exchange tube rows of the heating side heat exchanger 210, which can better improve the heat exchange performance of the heating side heat exchanger 210. The two water wheels can be connected to the rotating shaft of the same first drive motor 410 and driven by the first drive motor 410 to rotate at the same speed.

[0049] In some embodiments, Figure 1 and Figure 2As shown, the two water wheels include a first water wheel 420 and a second water wheel 430, the first water pumping device corresponds to the first water wheel 420, the second water pumping device corresponds to the second water wheel 430, the heating side heat exchange fan 220 is located on one side of the heating side heat exchanger 210, the second water wheel 430 is closer to the heating side heat exchange fan 220 than the first water wheel 420, and the first water wheel 420 is closer to the supercooling section of the heating side heat exchanger 220 than the second water wheel 430. The diameter of the second water wheel 430 is smaller than the diameter of the first water wheel 420, the set water level is higher than the lowest water pumping level of the second water wheel 430, the set water level is also higher than the lowest water pumping level of the first water wheel 420, and the lowest water pumping level of the second water wheel 430 is higher than the lowest water pumping level of the first water wheel 420. The first water wheel 420 stirs the condensed water to the side (subcooling side) of the heating side heat exchanger 210 facing away from the heating side heat exchange fan 220. Its main function is to improve the system capacity. The first water wheel 420 has a large diameter and a fast water pumping speed, which can consume water more efficiently, assist in cooling the heat exchanger, and better reduce the temperature of the subcooling section. After the water level in the first water collecting tank 143 reaches or even exceeds the lowest water pumping level of the second water wheel 430, the second water wheel 430 stirs the condensed water to the side (i.e., the high-temperature side) of the heating side heat exchanger 210 facing the heating side heat exchange fan 220. Its main function is to increase the consumption rate of condensed water and prevent the excessive increase of condensed water and overflow. Of course, it can also improve the heat exchange performance of the heating side heat exchanger 210.

[0050] In some examples, such as Figure 1 and Figure 2 As shown, the main body 100 is also provided with a partition plate 150, the cooling side heat exchange air duct 110 and the heating side heat exchange air duct 120 are located on both sides of the partition plate 150, and the compressor 130 is located in the heating side heat exchange air duct 120; the air conditioner also includes: a cooling side heat exchange fan 320, the cooling side heat exchange fan 320 is arranged in the cooling side heat exchange air duct 110, the inlet and outlet of the cooling side heat exchange air duct 110 are both connected to the cooling side, and the inlet and outlet of the heating side heat exchange air duct 120 are both connected to the heating side.

[0051] In some embodiments, Figure 5As shown, the cooling side heat exchange fan 320 includes a second drive motor 321, a wind wheel 322 and a volute 323. The main body 100 is also provided with a waterproof cavity 160. The waterproof cavity 160 can be arranged above the water receiving tray 140. The second drive motor 321 is arranged in the waterproof cavity 160. The volute 323 is located between the water receiving tray 140 and the waterproof cavity 160. The wind wheel 322 is located in the volute 323 and is connected to the second drive motor 321. The waterproof cavity 160 provides waterproof protection for the second drive motor 321 to prevent condensed water from falling on the second drive motor 321 and causing damage to the second drive motor 321. The rotating shaft of the second drive motor 321 is arranged downward, and the waterproof cavity 160 is provided with a through hole for the rotating shaft to pass through. The size of the through hole can be set to a size that can only allow the rotating shaft to pass through. The wind wheel 322 is installed on the rotating shaft of the second drive motor 321. This solution can prevent condensed water from entering the interior of the second drive motor 321 from the rotating shaft of the second drive motor 321, thereby further providing waterproof protection for the second drive motor 321.

[0052] It is possible that the structure and arrangement of the heat exchange fan 220 on the heating side are set to be the same as or different from the structure and arrangement of the heat exchange fan 320 on the cooling side, and both can achieve the purpose of this application. The purpose does not deviate from the design concept of the present invention and will not be repeated here. They should all fall within the protection scope of this application.

[0053] In some embodiments, Figure 3 As shown, the water receiving tray 140 is provided with supporting ribs 145 and a supporting platform 146 , the heating side heat exchanger 210 is provided on the supporting ribs 145 , and the cooling side heat exchanger 310 is provided on the supporting platform 146 .

[0054] In some embodiments, the control device is also electrically connected to the compressor 130 , and is further configured to control the compressor 130 according to the status information of the water level switch 500 .

[0055] The control method of the air conditioner provided in the embodiment of the present invention is as follows: Figure 6 Said, including:

[0056] Control the water pumping device 400 to operate at a first set speed, control the heating side heat exchange fan 220 to operate at a fourth set speed, and control the compressor 130 to operate at a first set frequency;

[0057] The status information of the water level switch 500 is obtained, and the water pumping device 400 and the heating-side heat exchange fan 220 are controlled according to the status information of the water level switch 500 .

[0058] When the air conditioner is in cooling operation, the water pumping device 400 is controlled to operate at the first set speed, the heating side heat exchange fan 220 is controlled to operate at the fourth set speed, and the compressor 130 is controlled to operate at the first set frequency (initial operating state). The condensed water is stirred onto the heating side heat exchanger 210 through the water pumping device 400 to improve the heat exchange performance of the heating side heat exchanger 210; the water level switch 500 is triggered when the condensed water in the water receiving tray 140 reaches the set water level, and the control device controls the heating side heat exchange fan 220, the water pumping device 400 and the compressor 130 according to the status information of the water level switch 500, so as to prevent the condensed water in the water receiving tray 140 from continuing to increase and overflow while improving the heat exchange performance of the heating side heat exchanger 210.

[0059] In some examples, such as Figure 7 The steps of controlling the water pumping device 400 and the heating side heat exchange fan 220 according to the status information of the water level switch 500 include:

[0060] Based on the state information that the water level switch 500 is triggered, the water pumping device 400 is controlled to run at a second set speed, and the heating side heat exchange fan 220 is controlled to run at a fifth set speed, the second set speed is greater than the first set speed, and the fifth set speed is less than the fourth set speed;

[0061] Based on the status information that the water level switch 500 is not triggered, the step of obtaining the status information of the water level switch 500 is performed.

[0062] When the air conditioner is in a high temperature and high humidity working environment, the amount of condensed water generated by the air conditioner is relatively large. The air conditioner cannot consume all the condensed water by normal operation according to the initial state. That is, after the water level in the first water collecting tank 143 has reached the pumping level of the second water pumping wheel 430, the heating side heat exchange fan 220 operates at the fourth set speed. The first water pumping wheel 420 and the second water pumping wheel 430 pumping water at the first set speed cannot lower the water level in the first water collecting tank 143. At this time, the first water collecting tank 143 and the second water collecting tank 143 are The water level in the tank 141 will continue to rise. When the water level in the second water collecting tank 141 reaches the set water level and the water level switch 500 is triggered, the control device controls the water pumping device 400 to accelerate at the second set speed, controls the heating side heat exchange fan 220 to reduce speed at the fifth set speed, and the compressor 130 still maintains operation at the first set frequency. In this scheme, the temperature of the heating side heat exchanger 210 increases, and the evaporation consumption rate of the condensed water is increased, thereby increasing the consumption rate of the condensed water with minimal impact on the performance of the air conditioner. This scheme is particularly suitable for air conditioner scenarios where condensed water is consumed mainly by evaporation of condensed water. For example, some air conditioners are difficult to consume water by blowing out water droplets through a fan due to the installation environment or internal structure. For example, some air conditioners are difficult to consume water by blowing out water droplets through a fan due to a long exhaust duct. At this time, the control device controls the water pumping device 400 and the heating side heat exchange fan 220 to increase the evaporation consumption rate of the condensed water, which is particularly beneficial to the consumption of condensed water. Of course, this solution is also applicable to the scenario where water is consumed by evaporating condensed water and blowing out water droplets through a fan at the same time.

[0063] In some embodiments, the control method further includes controlling the compressor 130 according to the status information of the water level switch 500 .

[0064] In some embodiments, Figure 7 The step of controlling the water pumping device 400 and the heating side heat exchange fan 220 according to the status information of the water level switch 500 also includes:

[0065] Based on the fact that the duration of the water level switch 500 being triggered does not reach the first set time, the water pumping device 400 is controlled to run at the third set speed for the second set time and then at the first set speed, the third set speed is greater than the first set speed, and the heating side heat exchange fan 220 is controlled to run at the fourth set speed. At this time, the compressor 130 can still run at the first set frequency, and then the step of obtaining the status information of the water level switch 500 is performed. It can be that the first set time is set to 10s, 20s, 30s or 60s, etc.; it can be that the third set speed is the same as or different from the second set speed, etc.; the above can all achieve the purpose of this application, and its purpose does not deviate from the design concept of the present invention, and will not be repeated here, and should all belong to the protection scope of this application.

[0066] When the water level switch 500 is not continuously triggered for the first set time (indicating that the generation rate of condensed water is lower than the consumption rate of condensed water, and as the water level in the second sump 141 drops, the water level switch 500 eventually changes from the triggered state to the untriggered state), the heating side heat exchange fan 220 is controlled to operate at the fourth set speed, and the compressor 130 can still operate at the first set frequency. The water pumping device 400 is controlled to operate at the third set speed for the second set time and then at the first set speed. The water pumping device 400 operates at the third set speed for the second set time and the heating side heat exchange fan 220 operates at the fourth set speed. The heating side heat exchange fan 220 first restores the air volume, and the water pumping device 400 maintains a relatively high speed to stir the large amount of condensed water on the heating side heat exchanger 210 so that it can evaporate quickly. The increase in air volume can also promote evaporation. Then the water pumping device 400 operates at the first set speed, the heating side heat exchange fan 220 operates at the fourth set speed, and the compressor 130 operates at the first set frequency, so that the air conditioner operates stably according to the initial state.

[0067] In some embodiments, Figure 7 The step of controlling the water pumping device 400, the heating side heat exchange fan 220 and the compressor 130 according to the status information of the water level switch 500 also includes:

[0068] Based on the duration of the water level switch 500 reaching the first set time, the compressor 130 is controlled to operate at a second set frequency, the second set frequency is greater than or equal to 0, and the second set frequency is less than the first set frequency, and then the state information of the water level switch 500 is obtained again;

[0069] Based on the status information obtained again that the water level switch 500 is not triggered, the compressor 130 is controlled to operate at the third set frequency, the water pumping device 400 is controlled to operate at the sixth set speed for the third set time, and the heating side heat exchange fan 220 is controlled to operate at the fourth set speed. The third set frequency is not greater than the first set frequency, and the sixth set speed is greater than the first set speed. Then, the steps of controlling the water pumping device 400 to operate at the first set speed, controlling the heating side heat exchange fan 220 to operate at the fourth set speed, and controlling the compressor 130 to operate at the first set frequency are executed. The third set time may be set to 10s, 20s, 30s or 60s, etc.; the third set frequency may be the same as or different from the second set frequency, etc.; all of the above can achieve the purpose of this application, and its purpose does not deviate from the design concept of the present invention, and will not be repeated here, and should all belong to the protection scope of this application. The sixth set speed can be equal to the second set speed, and the third set frequency can be equal to the first set frequency.

[0070] The status information is that when the water level switch 500 is continuously triggered for the first set time (indicating that the generation rate of condensed water is greater than the consumption rate of condensed water), the water pumping device 400 keeps accelerating, the heating side heat exchange fan 220 keeps decelerating, and the compressor 130 is controlled to operate at a second set frequency, which is less than the first set frequency, thereby reducing the cooling efficiency of the air conditioner, reducing the generation rate of condensed water, and making the consumption rate of condensed water greater than the generation rate of condensed water. As the water level in the second water collection tank 141 gradually decreases, in some examples the second set frequency can be 0, that is, the air conditioner compressor is shut down. When the water level switch 500 changes from the triggered state to the untriggered state, the water pumping device 400 accelerates its rotation, the heating side heat exchange fan 220 can increase the rotation speed and restore the initial operating speed, and control the compressor 130 to operate at the third set frequency and continue to operate for the third set time, so that the water level in the second water collection tank 141 is further reduced to prevent this process from being performed frequently (the reason is that the refrigeration performance of the air conditioner is poor during this process), and the water pumping device 400 accelerates its operation to pump away the high-temperature water that has not been evaporated by the high temperature, and to drain the cold water generated at the refrigeration end as soon as possible, to maintain the cooling temperature of the subcooling section heat exchanger given by the first water pumping wheel, and to maintain the stability of the system; then the water pumping device 400 rotates at the first set speed, the heating side heat exchange fan 220 rotates at the fourth set speed, and the compressor 130 rotates at the first set frequency, so that the air conditioner operates stably according to the initial state.

[0071] In one embodiment, if Figure 8 The embodiment of the present invention further provides a method for controlling an air conditioner, comprising:

[0072] Control the water pumping device 400 to operate at a first set speed, control the heating side heat exchange fan 220 to operate at a fourth set speed, and control the compressor 130 to operate at a first set frequency;

[0073] Obtaining status information of the water level switch 500;

[0074] Based on the status information that the water level switch 500 is triggered, the water pumping device 400 is controlled to operate at the second set speed, and the heating side heat exchange fan 220 is controlled to operate at the fifth set speed. At this time, the compressor 130 keeps operating at the first set frequency, the second set speed is greater than the first set speed, and the fifth set speed is less than the fourth set speed;

[0075] Based on the status information that the water level switch 500 is not triggered, the water pumping device 400 is kept running at the first set speed, the heating side heat exchange fan 220 is kept running at the fourth set speed, the compressor 130 is kept running at the first set frequency, and the step of obtaining the status information of the water level switch 500 is continuously performed;

[0076] Based on the fact that the duration of the water level switch 500 being triggered does not reach 30 seconds, the water pumping device 400 is controlled to run at the second set speed for 30 seconds and then at the first set speed, and the heating side heat exchange fan 220 is controlled to run at the fourth set speed. At this time, the compressor 130 keeps running at the first set frequency, and then the state information of the water level switch 500 is obtained;

[0077] Based on the duration of the water level switch 500 being triggered reaching 30s, the compressor 130 is controlled to operate at the second set frequency, at which time the water pumping device 400 keeps operating at the second set speed, and the heating side heat exchange fan 220 keeps operating at the fifth set speed, the second set frequency is less than the first set frequency, and then the state information of the water level switch 500 is obtained again;

[0078] Based on the state information obtained again that the water level switch 500 is not triggered, the compressor 130 is controlled to operate at a third set frequency, the third set frequency is not greater than the first set frequency, for example, the third set frequency may be equal to the first set frequency, the water pumping device 400 operates at a sixth set speed, the sixth set speed may be the same as the second set speed, at this time the water pumping device 400 keeps operating at the second set speed, the heating side heat exchange fan 220 keeps operating at the fifth set speed, and then the steps of controlling the water pumping device 400 to operate at the first set speed, controlling the heating side heat exchange fan 220 to operate at the fourth set speed, and controlling the compressor 130 to operate at the first set frequency are executed;

[0079] Based on the status information obtained again that the water level switch 500 is triggered, the compressor 130 is controlled to operate at the second set frequency. At this time, the water pumping device 400 maintains operation at the second set speed, and the heating side heat exchange fan 220 maintains operation at the fifth set speed, and then the status information of the water level switch 500 is obtained again.

[0080] To sum up, the technical solution proposed in the embodiment of the present invention is that the water receiving pan is configured to guide the condensed water of the heat exchange air duct on the cooling side to the heat exchange air duct on the heating side, the water pumping device is located in the heat exchange air duct on the heating side and is arranged on the water receiving pan, the water pumping device is configured to stir the condensed water in the water receiving pan to the heat exchanger on the heating side, so as to improve the heat exchange performance of the heat exchanger on the heating side; the water level switch is arranged on the water receiving pan, the water level switch is configured to be triggered when the condensed water in the water receiving pan reaches a set water level, and the control device is configured to control the heat exchange fan, the water pumping device and the compressor on the heating side according to the status information of the water level switch, so as to prevent the condensed water in the water receiving pan from continuing to increase and overflow while improving the heat exchange performance of the heat exchanger on the heating side.

[0081] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0082] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0083] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0084] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0086] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An air conditioner, characterized in that: include: The main body is provided with a cooling side heat exchange air duct, a heating side heat exchange air duct, a compressor and a water receiving pan, wherein the water receiving pan is configured to guide the condensed water of the cooling side heat exchange air duct to the heating side heat exchange air duct; The heating side heat exchanger and the heating side heat exchange fan are both arranged in the heating side heat exchange air duct; A cooling side heat exchanger is arranged in the cooling side heat exchange air duct; A first water pumping device and a second water pumping device are provided on the water receiving tray, and are configured to pump the condensed water in the water receiving tray to the heating-side heat exchanger, wherein the lowest water pumping level of the first water pumping device is lower than the lowest water pumping level of the second water pumping device; a water level switch, disposed on the water receiving tray, configured to be triggered when the condensed water in the water receiving tray reaches a set water level, wherein the set water level is higher than a minimum water level of the second water pumping device; A control device is electrically connected to the heating side heat exchange fan, the first water pumping device, the second water pumping device and the water level switch, and is configured to control the heating side heat exchange fan, the first water pumping device and the second water pumping device according to status information of the water level switch.

2. The air conditioner according to claim 1, characterized in that: The water receiving tray is provided with a second water collecting tank, and the water level switch is arranged in the second water collecting tank.

3. The air conditioner according to claim 1, characterized in that: The air conditioner further comprises a first driving motor, the water receiving tray is provided with a first water collecting tank, the first water pumping device and the second water pumping device are arranged in the first water collecting tank and are drivingly connected to the first driving motor.

4. The air conditioner according to claim 1, characterized in that: The first water-pumping device is a first water-pumping wheel, and the second water-pumping device is a second water-pumping wheel. The diameter of the second water-pumping wheel is smaller than the diameter of the first water-pumping wheel.

5. The air conditioner according to claim 4, characterized in that: The heating side heat exchange fan is located on one side of the heating side heat exchanger, the second water pumping device is closer to the heating side heat exchange fan than the first water pumping device, and the first water pumping device is closer to the subcooling section of the heating side heat exchanger than the second water pumping device.

6. The air conditioner according to any one of claims 1 to 5, characterized in that: The main body is further provided with a partition plate, the cooling side heat exchange air duct and the heating side heat exchange air duct are located on both sides of the partition plate, and the compressor is located in the heating side heat exchange air duct.

7. The air conditioner according to any one of claims 1 to 5, characterized in that: Also includes: The refrigeration side heat exchange fan is arranged in the refrigeration side heat exchange air duct, and the refrigeration side heat exchange fan includes a second drive motor, a wind wheel and a volute. The main body is also provided with a waterproof cavity. The body of the second drive motor is arranged in the waterproof cavity. The volute is located between the water receiving tray and the waterproof cavity. The wind wheel is located in the volute and is transmission-connected to the second drive motor.

8. The air conditioner according to claim 7, characterized in that: The waterproof cavity is located above the water receiving tray, and the waterproof cavity is provided with a through hole for the rotating shaft of the second driving motor to pass through.

9. The air conditioner according to any one of claims 1 to 5, characterized in that: The control device is also electrically connected to the compressor, and is further configured to control the compressor according to the status information of the water level switch.

10. A method for controlling an air conditioner according to any one of claims 1 to 9, characterized in that: include: Controlling the first water pumping device and the second water pumping device to operate at a first set speed, controlling the heating-side heat exchange fan to operate at a fourth set speed, and controlling the compressor to operate at a first set frequency; The state information of the water level switch is obtained, and the first water pumping device, the second water pumping device and the heating-side heat exchange fan are controlled according to the state information of the water level switch.

11. The control method according to claim 10, characterized in that: The step of controlling the first water pumping device, the second water pumping device and the heating-side heat exchange fan according to the state information of the water level switch comprises: Based on the status information that the water level switch is triggered, the first water pumping device and the second water pumping device are controlled to operate at a second set speed, and the heating side heat exchange fan is controlled to operate at a fifth set speed, the second set speed is greater than the first set speed, and the fifth set speed is less than the fourth set speed.

12. The control method according to claim 11, characterized in that: The step of controlling the first water pumping device, the second water pumping device and the heating-side heat exchange fan according to the state information of the water level switch further includes: Based on the duration of the water level switch being triggered not reaching the first set time, the first water pumping device and the second water pumping device are controlled to operate at the third set speed for the second set time and then operate at the first set speed, the third set speed is greater than the first set speed, and the heating side heat exchange fan is controlled to operate at the fourth set speed.

13. The control method according to claim 11, characterized in that: The control method further includes: controlling the compressor according to the state information of the water level switch.

14. The control method according to claim 13, characterized in that: The step of controlling the compressor according to the state information of the water level switch comprises: Based on the duration of the water level switch being triggered reaching a first set time, the compressor is controlled to operate at a second set frequency, where the second set frequency is greater than or equal to 0 and less than the first set frequency, and then the status information of the water level switch is obtained again, and the first water pumping device, the second water pumping device, the heating side heat exchange fan and the compressor are controlled according to the status information of the water level switch obtained again.

15. The control method according to claim 14, characterized in that: The step of controlling the first water pumping device, the second water pumping device, the heating-side heat exchange fan and the compressor according to the state information of the water level switch acquired again comprises: Based on the status information of the water level switch obtained again that the water level switch is not triggered, the compressor is controlled to operate at a third set frequency, the first water pumping device and the second water pumping device are controlled to operate at a sixth set speed for a third set time, and the heating side heat exchange fan is controlled to operate at a fourth set speed, the third set frequency is not greater than the first set frequency, and the sixth set speed is greater than the first set speed; then the steps of controlling the first water pumping device and the second water pumping device to operate at the first set speed, controlling the heating side heat exchange fan to operate at the fourth set speed, and controlling the compressor to operate at the first set frequency are executed.

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