Control method and device for air conditioner, air conditioner, storage medium

Abstract

The application relates to the technical field of intelligent air conditioners, and discloses a control method for an air conditioner, the air conditioner comprising a condensate water tray used for containing condensate water dropped from an indoor heat exchanger and provided with a condensate water groove on a bottom surface; and a float comprising a float ball which can be accommodated in the condensate water groove; the method comprising: acquiring a first height of the float ball when the air conditioner stops running in a refrigeration mode; and running the air conditioner in a heating mode when the first height is higher than a preset height. The method determines the case that the condensate water tray contains condensate water according to the height of the float ball, controls the air conditioner to run in the heating mode, evaporates the residual condensate water in the condensate water tray by using hot air in an air duct, can further reduce the amount of condensate water that cannot be completely drained by a drain pump in the condensate water tray, and can further reduce the case that bacteria breed in the condensate water tray. The application also discloses a control device for the air conditioner, an air conditioner and a storage medium.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent air conditioners, for example to a control method and device for an air conditioner, an air conditioner and a storage medium. BACKGROUND

[0002] At present, during the refrigeration operation of an air conditioner, condensation is easily formed on the surface of an indoor heat exchanger, and the condensation gathered as condensed water will drip into a condensed water tray. In the case that the amount of condensed water in the condensed water tray is relatively large, the condensed water in the condensed water tray can be discharged by using a drainage pump. However, the drainage pump is difficult to discharge all the condensed water in the condensed water tray, and the condensed water that cannot be discharged is stored in the condensed water tray for a long time, which is easy to breed bacteria in the condensed water tray.

[0003] In order to reduce the situation of breeding bacteria in the condensed water tray, the related technology discloses a condensed water discharge control method, which comprises: the tray body of the condensed water tray is arranged as an arc-shaped water tank inclined downward. The liquid level information in the arc-shaped water tank is detected by using a liquid level detection device, and the operation of the drainage pump is controlled according to the liquid level information. In this way, the tray body of the condensed water tray is arranged as an arc-shaped water tank, which is beneficial to the gathering of condensed water, and the gathered condensed water is convenient for the drainage pump to pump and discharge. Thus, the amount of condensed water in the condensed water tray is reduced, so as to reduce the situation of breeding bacteria in the condensed water tray.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related technology:

[0005] Although the related technology can reduce the amount of condensed water in the condensed water tray by using the drainage pump to extract the condensed water gathered in the arc-shaped water tank, so as to reduce the situation of breeding bacteria in the condensed water tray, part of the condensed water in the condensed water tray will still remain, and the part of the condensed water stored in the bottom of the condensed water tray for a long time will still be easy to breed bacteria in the condensed water tray.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important constituent elements or to delineate the protection scope of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a control method and device for an air conditioner, an air conditioner and a storage medium, which can further reduce the condensed water in the condensed water tray, so as to further reduce the situation of breeding bacteria in the condensed water tray.

[0009] In some embodiments, the air conditioner comprises an indoor heat exchanger and an indoor electronic expansion valve; wherein the air conditioner further comprises: a condensate water tray for collecting condensate water dripped from the indoor heat exchanger, and a bottom surface of the condensate water tray is provided with a condensate water groove; a float comprising a float ball, the float ball being accommodated in the condensate water groove; and the method comprises:

[0010] In a case where the air conditioner stops running in a cooling mode, a first height of the float ball is acquired;

[0011] In a case where the first height is higher than a preset height, the air conditioner runs in a heating mode.

[0012] Optionally, acquiring the first height of the float ball comprises: acquiring a standby duration of the air conditioner; in a case where the standby duration reaches a set duration, acquiring a first indoor temperature; and in a case where the first indoor temperature is lower than a set temperature, acquiring the first height of the float ball.

[0013] Optionally, in a case where the air conditioner runs in the heating mode, the method further comprises: increasing an opening degree of the indoor electronic expansion valve.

[0014] Optionally, increasing the opening degree of the indoor electronic expansion valve comprises: controlling the indoor electronic expansion valve to be fully opened.

[0015] Optionally, in a case where the air conditioner runs in the heating mode, the method further comprises: in a case where an indoor coil temperature is lower than a target coil temperature, increasing a running frequency of a compressor; or in a case where the indoor coil temperature is higher than the target coil temperature, decreasing the running frequency of the compressor; or in a case where the indoor coil temperature is equal to the target coil temperature, controlling the running frequency of the compressor to remain unchanged.

[0016] Optionally, in a case where the air conditioner runs in the heating mode, the method further comprises: acquiring a second indoor temperature; in a case where the second indoor temperature is lower than or equal to an indoor temperature threshold, controlling an indoor fan to run at a high-grade wind speed; or in a case where the second indoor temperature is higher than the indoor temperature threshold, controlling the indoor fan to run at a low-grade wind speed.

[0017] Optionally, in a case where the air conditioner runs in the heating mode, the method further comprises: acquiring a second height of the float ball; and in a case where the second height is lower than or equal to the preset height, the air conditioner stops running after running in the heating mode for a preset duration.

[0018] In some embodiments, the device comprises a processor and a memory storing program instructions, wherein the processor is configured to execute the foregoing control method for an air conditioner when running the program instructions.

[0019] In some embodiments, the air conditioner comprises: an indoor heat exchanger, an indoor electronic expansion valve, a condensate water tray, and a float; the condensate water tray is used to collect the condensate water dropped from the indoor heat exchanger, and the bottom surface is provided with a condensate water groove; the float comprises a float ball which can be accommodated in the condensate water groove; when the air conditioner stops running in a cooling mode, and the height of the float ball is higher than a preset height, the air conditioner runs in a heating mode.

[0020] Optionally, the air conditioner further comprises a distance sensor and the aforementioned control device for the air conditioner; the distance sensor is arranged at the lower end of the float ball and is used to detect the height of the float ball from the bottom of the condensate water groove.

[0021] In some embodiments, the storage medium stores program instructions, wherein the program instructions, when executed, perform the aforementioned control method for the air conditioner.

[0022] The control method and device for the air conditioner, the air conditioner, and the storage medium provided by the embodiments of the present disclosure can achieve the following technical effects:

[0023] When the air conditioner stops running in a cooling mode, it indicates that the drain pump has stopped draining water, and at this time, a small amount of condensate water may still remain in the condensate water tray. The condensate water groove arranged at the bottom of the condensate water tray and lower than the bottom surface of the condensate water tray can make the remaining condensate water in the condensate water tray collect in the condensate water groove. In this way, the condensate water collected in the condensate water groove can make the float ball rise, and when the height of the float ball reaches the preset height, it is determined that there is condensate water remaining in the condensate water tray, and the air conditioner is controlled to run in a heating mode. During the process of the air conditioner running in the heating mode, the hot air in the air duct can evaporate the condensate water remaining in the condensate water tray. Compared with the mode of relying only on the drain pump to extract and discharge the condensate water from the condensate water tray, the amount of condensate water that cannot be drained by the drain pump in the condensate water tray can be further reduced, so as to further reduce the case of breeding bacteria in the condensate water tray.

[0024] The foregoing general description and the following description are only exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitation on the embodiments, elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute proportional limitation, and wherein:

[0026] Figure 1 is a schematic diagram of an air conditioner provided by the embodiments of the present disclosure;

[0027] Figure 2 is a schematic diagram of a condensate water tray of an air conditioner provided by the embodiments of the present disclosure;

[0028] Figure 3 is a schematic diagram of an electrical connection of an air conditioner provided by an embodiment of the present disclosure;

[0029] Figure 4 is a schematic diagram of a control method for an air conditioner provided by an embodiment of the present disclosure;

[0030] Figure 5 is a schematic diagram of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0031] Figure 6 is a schematic diagram of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0032] Figure 7 is a schematic diagram of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0033] Figure 8 is a schematic diagram of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0034] Figure 9 is a schematic diagram of a control device for an air conditioner provided by an embodiment of the present disclosure;

[0035] Figure 10 is a schematic diagram of another electrical connection of an air conditioner provided by an embodiment of the present disclosure.

[0036] Reference signs:

[0037] 1: compressor; 2: four-way valve; 3: outdoor heat exchanger; 4: outdoor fan; 5: electromagnetic valve; 6: outdoor electronic expansion valve; 7: indoor heat exchanger; 8: indoor fan; 9: indoor electronic expansion valve; 10: gas-liquid separator; 11: condensate pan; 12: float; 13: condensate tank; 14: float ball; 15: float rod; 16: control line; 17: distance sensor; 18: first temperature sensor; 19: second temperature sensor; 20: controller. DETAILED DESCRIPTION

[0038] In order to enable persons skilled in the art to more fully understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below with reference to the accompanying drawings, which are used only for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0039] The terms "first", "second", and the like in the description and claims of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0040] Unless otherwise specified, the term "a plurality of" means two or more.

[0041] In the present disclosure, the character " / " represents a "or" relationship between the objects before and after it. For example, A / B means: A or B.

[0042] The term "and / or" is a description of the association relationship between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0043] The term "corresponding" can refer to an association or binding relationship. A and B correspond to each other means that there is an association or binding relationship between A and B.

[0044] At present, in the process of air conditioner refrigeration operation, condensation is easily formed on the surface of the indoor heat exchanger, and the condensation gathered as condensate water will drip into the condensate water tray. In the case that the amount of condensate water in the condensate water tray is relatively large, the condensate water in the condensate water tray can be discharged by using a drainage pump. However, the drainage pump is difficult to discharge all the condensate water in the condensate water tray, and the condensate water that cannot be discharged is stored in the condensate water tray for a long time, which is easy to breed bacteria in the condensate water tray.

[0045] In order to reduce the situation of breeding bacteria in the condensate water tray, the related technology discloses a condensate water discharge control method, which comprises: the disc body of the condensate water tray is arranged as an arc-shaped water tank inclined downward. The liquid level information in the arc-shaped water tank is detected by a liquid level detection device, and the operation of the drainage pump is controlled according to the liquid level information. In this way, the disc body of the condensate water tray is arranged as an arc-shaped water tank, which is conducive to the gathering of condensate water, and the gathered condensate water is convenient for the drainage pump to pump and discharge. Thus, the amount of condensate water in the condensate water tray is reduced to reduce the situation of breeding bacteria in the condensate water tray. Although the related technology can reduce the amount of condensate water in the condensate water tray to reduce the situation of breeding bacteria in the condensate water tray by pumping the gathered condensate water in the arc-shaped water tank by the drainage pump, part of the condensate water will still remain in the condensate water tray, and the part of the condensate water stored in the bottom of the condensate water tray for a long time will still be easy to breed bacteria in the condensate water tray.

[0046] The present disclosure provides an air conditioner, which can further reduce the amount of condensate water that cannot be discharged by the drainage pump in the condensate water tray in the case that the air conditioner stops running in the refrigeration mode, that is, the drainage pump of the air conditioner has stopped discharging water, so as to further reduce the situation of breeding bacteria in the condensate water tray.

[0047] In combination Figure 1 As shown in the figure, the air conditioner comprises a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an outdoor fan 4, an electromagnetic valve 5, an outdoor electronic expansion valve 6, an indoor heat exchanger 7, an indoor fan 8, an indoor electronic expansion valve 9, and a gas-liquid separator 10.

[0048] Wherein, when the air conditioner operates in different working conditions, the flow direction of the refrigerant in the air conditioner pipeline can be changed by the four-way valve 2, so as to realize the mutual conversion between the air conditioner refrigeration and heating.

[0049] Wherein, the electromagnetic valve 5 is used to control the on-off state of the refrigerant flow in the air conditioner pipeline.

[0050] Wherein, the outdoor electronic expansion valve 6 and the indoor electronic expansion valve 9 are used to realize the refrigerant pressure regulation function when the air conditioner operates in the refrigeration mode or the heating mode.

[0051] Wherein, when the air conditioner operates in the refrigeration mode, the indoor fan 8 is used to blow the air cooled by the indoor heat exchanger 7 into the room when the indoor fan 8 is running.

[0052] Optionally, in combination Figure 2 As shown in the figure, the air conditioner further comprises a condensate water tray 11 and a float 12.

[0053] Wherein, the condensate water tray 11 is used to collect the condensate water dropped by the indoor heat exchanger 7, and the bottom surface is provided with a condensate water groove 13.

[0054] Optionally, the float 12 comprises a float ball 14 and a float rod 15.

[0055] Wherein, the float ball 14 can be accommodated in the condensate water groove 13.

[0056] Wherein, the float rod 15 is arranged through the float ball 14 and passes through the center of the float ball 14, the lower end of the float rod 15 extends to the bottom of the condensate water groove 13, and the upper end of the float rod 15 is connected with a control line 16. The float ball 14 can move upward or downward along the float rod 15.

[0057] Optionally, the float ball 14 is cylindrical. And / or, the condensate water groove 14 is cylindrical.

[0058] Optionally, in combination Figure 2 And Figure 3 As shown in the figure, the air conditioner further comprises a distance sensor 17, a first temperature sensor 18, a second temperature sensor 19, and a controller 20.

[0059] The distance sensor 17 is arranged at the lower end of the floating ball 14 and is used to detect the height of the floating ball 14 from the bottom of the condensate water tank 13. The first temperature sensor 18 is used to detect the indoor temperature. The second temperature sensor 19 is used to detect the indoor coil temperature of the indoor heat exchanger 3.

[0060] The controller 20 is connected with the compressor 1, the four-way valve 2, the outdoor fan 4, the electromagnetic valve 5, the outdoor electronic expansion valve 6, the indoor fan 8, the indoor electronic expansion valve 9, the distance sensor 17, the first temperature sensor 18 and the second temperature sensor 19 respectively.

[0061] The controller 20 is used to control the operation of the compressor 1, the four-way valve 2, the outdoor fan 4, the electromagnetic valve 5, the indoor fan 8 and the like. The controller 20 is also used to control the opening degree of the outdoor electronic expansion valve 6 and the indoor electronic expansion valve 9. The controller 20 obtains the height of the floating ball 14 from the distance sensor, the indoor temperature from the first temperature sensor 18 and the indoor coil temperature from the second temperature sensor 19 respectively.

[0062] Based on the air conditioner provided in the above embodiment, the disclosure provides a control method for an air conditioner, which combines the advantages of the air conditioner and the control method. Figure 4 As shown in the figure, the method comprises the following steps.

[0063] S41, in the case that the air conditioner stops running in the cooling mode, the controller obtains the first height of the floating ball.

[0064] S42, in the case that the first height is higher than the preset height, the controller controls the air conditioner to run in the heating mode.

[0065] By using the control method for an air conditioner provided in the disclosure, in the case that the air conditioner stops running in the cooling mode, it is indicated that the drain pump has stopped draining, and at this time, a small amount of condensate water may still remain in the condensate water tray. By arranging the condensate water tank at the bottom of the condensate water tray and making the condensate water tank lower than the bottom surface of the condensate water tray, the remaining condensate water in the condensate water tray can be collected in the condensate water tank. In this way, the condensate water collected in the condensate water tank can make the floating ball rise. In the case that the height of the floating ball reaches the preset height, it is determined that condensate water remains in the condensate water tray, and the air conditioner is controlled to run in the heating mode. During the process that the air conditioner runs in the heating mode, the hot air in the air duct can evaporate the condensate water remaining in the condensate water tray. Compared with the mode of relying only on the drain pump to extract and discharge the condensate water from the condensate water tray, the amount of condensate water that cannot be drained by the drain pump in the condensate water tray can be further reduced, so as to further reduce the case that bacteria breed in the condensate water tray.

[0066] Optionally, in the case that the controller controls the air conditioner to run in the cooling mode, it comprises the following steps: in the case that the height of the floating ball is higher than the drainage height, the drain pump is started. The drainage height is higher than the preset height.

[0067] When the amount of condensed water in the condensed water tray is large, the condensed water is prone to overflow from the condensed water tray. In this way, by setting the drainage height, and in the case that the height of the floating ball is higher than the drainage height, i.e. in the case that the condensed water is prone to overflow from the condensed water tray, the drainage pump is started to timely drain the condensed water in the condensed water tray. Thus, the case that the condensed water overflows from the condensed water tray is reduced.

[0068] Optionally, the controller obtaining the first height of the floating ball comprises: the controller obtaining a standby duration of the air conditioner. The controller obtains the first indoor temperature in the case that the standby duration reaches a set duration. The controller obtains the first height of the floating ball in the case that the first indoor temperature is lower than a set temperature.

[0069] Generally, in the case that the outdoor temperature is high (for example, in summer), the user uses the air conditioner to run the cooling mode more frequently, and the condensed water tray also frequently produces condensed water. At this time, if the air conditioner is controlled to run the heating mode to dry the condensed water tray, the air conditioner will frequently switch the working mode, which is prone to cause waste of air conditioner resources. In this way, in the case that the air conditioner stops the cooling mode and maintains the standby state for a long time, and the indoor temperature is not high, it can be determined that the possibility of the user using the air conditioner to run the cooling mode is low. At this time, the height of the floating ball is obtained, and the drying treatment of the condensed water tray is performed according to the height of the floating ball, which can reduce the case that the air conditioner switches the working mode. Thus, the waste of air conditioner resources is reduced.

[0070] Optionally, the set duration is t, and t≥24h. More specifically, t=48h, 72h, 96h or 120h.

[0071] Optionally, the set temperature is T, and T≤26℃. More specifically, T=25℃, 24℃ or 23℃.

[0072] Generally, the lower the indoor temperature, the lower the possibility of the user using the air conditioner to run the cooling mode. In this way, in the case that the air conditioner stops the cooling mode and maintains the standby state for more than two days, and the indoor temperature is lower than 26℃, the air conditioner is extremely likely not to run the cooling mode again. At this time, the height of the floating ball is obtained, and the drying treatment of the condensed water tray is performed according to the height of the floating ball, which can further reduce the case that the air conditioner switches the working mode. Thus, the waste of air conditioner resources is further reduced.

[0073] Optionally, the controller controls the air conditioner to run the heating mode comprises: the controller opens the outdoor electronic expansion valve to a first preset opening degree. The controller opens the indoor electronic expansion valve to a second preset opening degree. The controller controls the compressor to run at a preset frequency. The controller controls the indoor fan to run at a first preset wind speed. The controller controls the outdoor fan to run at a second preset wind speed.

[0074] Optionally, in the case that the first height is higher than the preset height, and before the controller controls the air conditioner to run in the heating mode, the method further comprises: the controller sends prompt information to the user that the air conditioner needs to perform drying and sterilization; and the controller receives a control instruction made by the user in response to the prompt information. In the case that the control instruction is to perform drying and sterilization, the controller controls the air conditioner to run in the heating mode.

[0075] During the process of drying and sterilization performed by the air conditioner, the air conditioner runs in the heating mode to increase the indoor temperature. Therefore, in the case that the air conditioner needs to perform drying and sterilization, the air conditioner determines whether to run in the heating mode according to the indication of the user, so that the timing of running in the heating mode by the air conditioner meets the demand of the user, and the case that the air conditioner runs in the heating mode when the user does not want the indoor temperature to increase is reduced. Thus, the user experience is improved.

[0076] In combination with Figure 5 The embodiments of the present disclosure provide another control method for an air conditioner, which comprises:

[0077] S51, in the case that the air conditioner stops running in the cooling mode, the controller acquires a first height of the float ball.

[0078] S52, in the case that the first height is higher than a preset height, the controller controls the air conditioner to run in the heating mode.

[0079] S53, the controller increases the opening degree of the indoor electronic expansion valve.

[0080] During the process of running in the heating mode by the air conditioner, the refrigerant flows through the compressor 1-four-way valve 2-indoor electronic expansion valve 9-indoor heat exchanger 7-outdoor electronic expansion valve 6-electromagnetic valve 5-outdoor heat exchanger 3-four-way valve 2-gas-liquid separator 10-compressor 1 in sequence. By using the control method for the air conditioner provided by the embodiments of the present disclosure, during the process of running in the heating mode by the air conditioner, the opening degree of the indoor electronic expansion valve is increased, so that the flow of the refrigerant flowing into the indoor heat exchanger is increased, and the heating capacity of the indoor heat exchanger is increased. Thus, the evaporation speed of the condensed water in the condensed water tray is increased, and the amount of the condensed water in the condensed water tray is further reduced, which is beneficial to reducing the case that bacteria breed in the condensed water tray.

[0081] Optionally, the controller increasing the opening degree of the indoor electronic expansion valve comprises: the controller controls the indoor electronic expansion valve to be fully opened.

[0082] During the process of running in the heating mode by the air conditioner, the indoor electronic expansion valve is fully opened, so that the flow of the refrigerant flowing into the indoor heat exchanger is further increased, and the heating capacity of the indoor heat exchanger is further increased. Thus, the evaporation speed of the condensed water in the condensed water tray is further increased.

[0083] Optionally, the controller controls the air conditioner to run in the heating mode, and the method further comprises: the controller acquires a second height of the float ball; and the controller controls the air conditioner to run in the heating mode until a preset time length elapses when the second height is lower than or equal to the preset height.

[0084] When the air conditioner runs in the heating mode, the amount of residual condensate in the condensate pan is reduced, and the height of the float ball is also reduced. When the height of the float ball is lower than the preset height, it indicates that the amount of condensate in the condensate pan is very small, or even that only condensation is attached in the condensate pan. In this way, when the height of the float ball is lower than or equal to the preset height, the air conditioner is controlled to continue running in the heating mode for a period of time and then stop, which can dry the small amount of condensate in the condensate pan or dry the condensation attached in the condensate pan. Thus, the residual condensate in the condensate pan is further reduced, so as to further reduce the growth of bacteria in the condensate pan.

[0085] In combination with Figure 6 The embodiment of the present disclosure provides another control method for an air conditioner, which comprises:

[0086] S61, when the air conditioner stops running in the cooling mode, the controller acquires a first height of the float ball.

[0087] S62, when the first height is higher than a preset height, the controller controls the air conditioner to run in the heating mode.

[0088] S63, when the indoor coil temperature is lower than a target coil temperature, the controller increases the operating frequency of the compressor. Alternatively,

[0089] S64, when the indoor coil temperature is higher than the target coil temperature, the controller reduces the operating frequency of the compressor. Alternatively,

[0090] S65, when the indoor coil temperature is equal to the target coil temperature, the controller keeps the operating frequency of the compressor unchanged.

[0091] The target coil temperature is a value of the indoor coil temperature when the compressor overheats and stops running.

[0092] In a heating operation process of the air conditioner, if the discharge temperature of the compressor is too high, the compressor may overheat and stop running. The overheat stop of the compressor may affect the heating effect of the air conditioner. In the control method for the air conditioner provided in the embodiments of the present disclosure, in the heating operation process of the air conditioner, if the indoor coil temperature is lower than the target coil temperature, it indicates that the compressor is not prone to overheat and stop, at this time, the operating frequency of the compressor is increased, the heating capacity of the air conditioner is increased, the evaporation speed of the condensed water in the condensed water tray is increased, and the amount of condensed water in the condensed water tray is reduced.

[0093] Optionally, the target coil temperature is Te, and 40℃≤Te≤56℃. More specifically, Te=43℃, 45℃, 48℃, 50℃, 53℃ or 55℃.

[0094] Preferably, Te=56℃. In the heating operation process of the air conditioner, the indoor coil temperature is controlled to reach 56℃ by controlling the operating frequency of the compressor. Not only the condensed water in the condensed water tray can be quickly dried by the high-temperature hot air flowing through the air duct, but also the condensed water tray and the air duct can be high-temperature sterilized by the high-temperature hot air. Thus, the drying and sterilization effects are achieved, so as to further reduce the growth of bacteria in the condensed water tray.

[0095] Optionally, when the controller controls the air conditioner to run in the heating mode, the method further includes: the controller acquires a second height of the floating ball. When the second height is lower than or equal to a preset height, the controller controls the air conditioner to stop running after running in the heating mode for a preset time length.

[0096] When the air conditioner runs in the heating mode, the amount of residual condensed water in the condensed water tray is reduced, and the height of the floating ball is also reduced. When the height of the floating ball is lower than the preset height, it indicates that the amount of condensed water in the condensed water tray is very small, or even that only condensation is attached in the condensed water tray. Thus, when the height of the floating ball is lower than or equal to the preset height, the air conditioner is controlled to continue running in the heating mode for a period of time and then stop, so as to dry the small amount of condensed water in the condensed water tray or dry the condensation attached in the condensed water tray. Thus, the residual condensed water in the condensed water tray is further reduced, so as to further reduce the growth of bacteria in the condensed water tray.

[0097] In combination with Figure 7 The embodiments of the present disclosure provide another control method for an air conditioner, which includes:

[0098] S71, when the air conditioner stops running in the cooling mode, the controller acquires a first height of the floating ball.

[0099] S72, in the case that the first height is higher than the preset height, the controller controls the air conditioner to run in the heating mode.

[0100] S73, the controller acquires the second indoor temperature.

[0101] S74, in the case that the second indoor temperature is lower than or equal to the indoor temperature threshold, the controller controls the indoor fan to run at the high-grade wind speed. Alternatively,

[0102] S75, in the case that the second indoor temperature is higher than the indoor temperature threshold, the controller controls the indoor fan to run at the low-grade wind speed.

[0103] The indoor temperature threshold is a preset temperature of the air conditioner by the user.

[0104] By using the control method for the air conditioner provided in the embodiments of the present disclosure, in the case that the indoor temperature is lower than or equal to the indoor temperature threshold during the heating operation of the air conditioner, it indicates that the indoor temperature has not reached the preset temperature, at this time, the indoor fan is controlled to run at the high-grade wind speed, which can improve the heating efficiency of the air conditioner on the indoor, so as to improve the evaporation speed of the condensed water in the condensed water tray. In the case that the indoor temperature is higher than the indoor temperature threshold, it indicates that the indoor temperature has exceeded the preset temperature, at this time, the indoor fan is controlled to run at the low-grade wind speed, which can reduce the heating efficiency of the air conditioner. Thus, the heating capacity of the air conditioner is reduced, so that the indoor temperature is not too high, thereby improving the user experience.

[0105] Optionally, the indoor temperature threshold is TY, and 20℃≤TY≤28℃. More specifically, TY=23℃, 25℃ or 26℃.

[0106] Optionally, in the case that the controller controls the air conditioner to run in the heating mode, the method further comprises: the controller acquires the second height of the floating ball. In the case that the second height is lower than or equal to the preset height, the controller controls the air conditioner to stop running after running in the heating mode for a preset time length.

[0107] In the case that the air conditioner runs in the heating mode, the amount of residual condensed water in the condensed water tray is reduced, and the height of the floating ball is also reduced. In the case that the height of the floating ball is lower than the preset height, it indicates that the amount of condensed water in the condensed water tray is very small, or even that there is only condensed water attached in the condensed water tray. In this way, in the case that the height of the floating ball is lower than or equal to the preset height, the air conditioner is controlled to continue running in the heating mode for a period of time and then stop, which can dry the small amount of condensed water in the condensed water tray or dry the condensed water attached in the condensed water tray. Thus, the residual condensed water in the condensed water tray is further reduced, so as to further reduce the case that bacteria breed in the condensed water tray.

[0108] In combination with Figure 8 the air conditioner, the embodiments of the present disclosure provide another control method for the air conditioner, which comprises:

[0109] S81, in the case that the air conditioner stops running in the cooling mode, the controller acquires the first height of the float ball.

[0110] S82, in the case that the first height is higher than the preset height, the controller controls the air conditioner to run in the heating mode.

[0111] S83, the controller acquires the second height of the float ball.

[0112] S84, in the case that the second height is lower than or equal to the preset height, the controller controls the air conditioner to run in the heating mode and stop after a preset time length.

[0113] In the case that the air conditioner runs in the heating mode, the amount of residual condensate in the condensate pan is reduced, and the height of the float ball is also reduced. In the case that the height of the float ball is lower than the preset height, it indicates that the amount of condensate in the condensate pan is very small, or even that there is only condensation attached in the condensate pan. By using the control method for the air conditioner provided in the embodiments of the present disclosure, in the case that the height of the float ball is lower than or equal to the preset height, the air conditioner is controlled to continue running in the heating mode for a period of time and then stop, which can dry the very small amount of condensate in the condensate pan, or dry the condensation attached in the condensate pan. Thus, the residual condensate in the condensate pan is further reduced, so as to further reduce the case that bacteria breed in the condensate pan.

[0114] Optionally, the preset time length is ts, and 2min≤ts≤6min. More specifically, ts=3min, 4min or 5min.

[0115] In the case that the height of the float ball is lower than or equal to the preset height, the air conditioner delays the heating running time for too long, which can cause waste of resources. If the air conditioner delays the heating running time for too short, the evaporation effect of the condensate in the condensate pan can be poor. In this way, the time length for which the air conditioner continues to run in the heating mode is limited to between 2min and 6min, which can ensure that the preset time length is not too long or too short. Thus, the waste of resources of the air conditioner can be reduced, and the case that the evaporation effect of the condensate is poor can also be reduced.

[0116] In combination with Figure 9 As shown in the figure, the embodiments of the present disclosure provide a control device 900 for an air conditioner, which includes a processor 100 and a memory 101. Optionally, the device can also include a communication interface 102 and a bus 103. The processor 100, the communication interface 102 and the memory 101 can complete communication with each other through the bus 103. The communication interface 102 can be used for information transmission. The processor 100 can call the logical instructions in the memory 101 to execute the control method for the air conditioner of the above-mentioned embodiments.

[0117] In addition, the logic instructions in the memory 101 described above can be implemented in the form of a software function unit and sold or used as an independent product, which can be stored in a computer readable storage medium.

[0118] The memory 101 as a computer readable storage medium can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiments of the present disclosure. The processor 100 executes the program instructions / modules stored in the memory 101, thereby performing function applications and data processing, that is, implementing the control method for the air conditioner in the above embodiments.

[0119] The memory 101 can include a program storage area and a data storage area, wherein the program storage area can store an operating system and application programs required by at least one function; the data storage area can store data created according to the use of the terminal device, etc. In addition, the memory 101 can include a high-speed random access memory, and can also include a non-volatile memory.

[0120] In combination Figure 1 As shown in the figure, the embodiments of the present disclosure provide an air conditioner, which includes a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an outdoor fan 4, an electromagnetic valve 5, an outdoor electronic expansion valve 6, an indoor heat exchanger 7, an indoor fan 8, an indoor electronic expansion valve 9, and a gas-liquid separator 10.

[0121] Wherein, when the air conditioner operates in different working conditions, the flow direction of the refrigerant in the air conditioner pipeline can be changed through the four-way valve 2, so as to realize the mutual conversion between the refrigeration and heating of the air conditioner.

[0122] Wherein, the electromagnetic valve 5 is used to control the on-off state of the refrigerant flow in the air conditioner pipeline.

[0123] Wherein, the outdoor electronic expansion valve 6 and the indoor electronic expansion valve 9 are used to realize the refrigerant pressure regulation function when the air conditioner operates in the refrigeration mode or the heating mode.

[0124] Wherein, when the air conditioner operates in the refrigeration mode, the indoor fan 8 is used to blow the air cooled by the indoor heat exchanger 7 into the room when the indoor fan 8 is running.

[0125] Optionally, in combination Figure 2 As shown in the figure, the air conditioner further includes a condensate water tray 11 and a float 12.

[0126] Wherein, the condensate water tray 11 is used to collect the condensate water dropped from the indoor heat exchanger 7, and the bottom surface is provided with a condensate water groove 13.

[0127] Optionally, the float 12 includes a float ball 14 and a float rod 15.

[0128] The floating ball 14 is accommodated in the condensate water tank 13.

[0129] The floating rod 15 is arranged through the floating ball 14 and extends through the center of the floating ball 14, and the lower end of the floating rod 15 extends to the bottom of the condensate water tank 13, and the upper end of the floating rod 15 is connected with the control line 16. The floating ball 14 can move upward or downward along the floating rod 15.

[0130] Optionally, the floating ball 14 is cylindrical. And / or, the condensate water tank 14 is cylindrical.

[0131] Optionally, the air conditioner further comprises a distance sensor 17, a first temperature sensor 18, a second temperature sensor 19 and a control device 900 for the air conditioner. Figure 2 and Figure 10 As shown in the figure, the air conditioner further comprises a distance sensor 17, a first temperature sensor 18, a second temperature sensor 19 and a control device 900 for the air conditioner.

[0132] The distance sensor 17 is arranged at the lower end of the floating ball 14 and is used to detect the height of the floating ball 14 from the bottom of the condensate water tank 13. The first temperature sensor 18 is used to detect the indoor temperature. The second temperature sensor 19 is used to detect the indoor coil temperature of the indoor heat exchanger 3.

[0133] The control device 900 for the air conditioner is connected with the compressor 1, the four-way valve 2, the outdoor fan 4, the electromagnetic valve 5, the outdoor electronic expansion valve 6, the indoor fan 8, the indoor electronic expansion valve 9, the distance sensor 17, the first temperature sensor 18 and the second temperature sensor 19 respectively.

[0134] The control device 900 for the air conditioner is installed in the air conditioner. The installation relationship described herein is not limited to being placed in the air conditioner, but also includes installation connection with other components of the air conditioner, including but not limited to physical connection, electrical connection or signal transmission connection, etc. Those skilled in the art can understand that the control device 900 for the air conditioner can be adapted to a feasible air conditioner, and thus other feasible embodiments can be realized.

[0135] The control device 900 for the air conditioner is used to control the operation of the compressor 1, the four-way valve 2, the outdoor fan 4, the electromagnetic valve 5, the indoor fan 8 and the indoor electronic expansion valve 9. The control device 900 for the air conditioner is also used to control the opening degree of the outdoor electronic expansion valve 6 and the indoor electronic expansion valve 9. The control device 900 for the air conditioner respectively acquires the height of the floating ball 14 from the distance sensor, acquires the indoor temperature from the first temperature sensor 18 and acquires the indoor coil temperature from the second temperature sensor 19.

[0136] The disclosure embodiment provides a storage medium which stores computer executable instructions, and the computer executable instructions are set to execute the above-mentioned control method for the air conditioner.

[0137] The storage medium described above can be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

[0138] The technical solutions of the embodiments of the present disclosure can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes one or more instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method disclosed in the embodiments of the present disclosure. The aforementioned storage medium can be a non-transitory storage medium, including a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes, or a transitory storage medium.

[0139] The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural, logical, electrical, process, and other changes. The embodiments represent only a few of the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included in or replace parts and features of other embodiments. Also, the words used in this application are only used to describe the embodiments and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise. Similarly, as used in this application, the term "and / or" refers to any and all possible combinations of one or more associated listed items. In addition, when used in this application, the term "comprise" and its variants "comprises" and / or comprises" and the like mean the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, or device that includes the stated element. In this document, each embodiment focuses on the differences from other embodiments, and the same or similar parts between various embodiments can be referred to each other. For the method, product, etc. disclosed in the embodiments, if it corresponds to the method part disclosed in the embodiments, the relevant part can be referred to the description of the method part.

[0140] Those skilled in the art can understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods for each specific application to realize the described functions, but such implementation should not be considered beyond the scope of the embodiments of the present disclosure. The skilled person can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0141] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the units can only be a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms. The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to implement the embodiments. In addition, each functional unit in the embodiments of the present disclosure can be integrated in one processing unit, or each unit can be a physically independent unit, or two or more units can be integrated in one unit.

[0142] The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other processing device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other processing device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks.

Claims

1. A control method for an air conditioner including an indoor heat exchanger and an indoor electronic expansion valve, the control method comprising: determining whether a temperature of the indoor heat exchanger is equal to or lower than a predetermined temperature; and if the temperature of the indoor heat exchanger is equal to or lower than the predetermined temperature, controlling the indoor electronic expansion valve to be in a closed state. The air conditioner further comprises a condensate water tray for receiving condensate water dropped from the indoor heat exchanger, and a condensate water groove is arranged on the bottom surface of the condensate water tray; the float comprises a float ball which can be accommodated in the condensate water groove; the method comprises: In the case that the air conditioner stops running in the cooling mode, the standby time length of the air conditioner is obtained; In the case that the standby time length reaches the set time length, the first indoor temperature is obtained; In the case that the first indoor temperature is lower than the set temperature, the first height of the float ball is obtained; In the case that the first height is higher than the preset height, the air conditioner runs in the heating mode.

2. The method of claim 1, wherein, In the case that the air conditioner runs in the heating mode, the method further comprises: Increasing the opening degree of the indoor electronic expansion valve.

3. The method of claim 1, wherein, In the case that the air conditioner runs in the heating mode, the method further comprises: In the case that the indoor coil temperature is lower than the target coil temperature, the operating frequency of the compressor is increased; or, In the case that the indoor coil temperature is higher than the target coil temperature, the operating frequency of the compressor is decreased; or, In the case that the indoor coil temperature is equal to the target coil temperature, the operating frequency of the compressor is kept unchanged.

4. The method according to any one of claims 1 to 3, characterized in that, In the case that the air conditioner runs in the heating mode, the method further comprises: Obtaining the second height of the float ball; In the case that the second height is lower than or equal to the preset height, the air conditioner stops running after running in the heating mode for the preset time length.

5. A control device for an air conditioner comprising a processor and a memory having stored program instructions, characterized in that, The processor is configured to execute the control method for the air conditioner as claimed in any one of claims 1 to 4 when running the program instructions.

6. An air conditioner comprising an indoor heat exchanger and an indoor electronic expansion valve; characterized by, The air conditioner further comprises: a condensate water tray for receiving condensate water dropped from the indoor heat exchanger, and a condensate water groove is arranged on the bottom surface of the condensate water tray; a float comprising a float ball which can be accommodated in the condensate water groove; wherein, in the case that the air conditioner stops running in the cooling mode, the standby time length of the air conditioner is obtained; in the case that the standby time length reaches the set time length, the first indoor temperature is obtained; in the case that the first indoor temperature is lower than the set temperature, the first height of the float ball is obtained; and in the case that the height of the float ball is higher than the preset height, the air conditioner runs in the heating mode.

7. The air conditioner of claim 6, wherein The float further comprises: a float rod which is arranged through the float ball and passes through the center of the float ball, and the lower end of the float rod extends to the bottom of the condensate water groove, and the upper end of the float rod is connected with a control line; wherein, the float ball can move upward or downward along the float rod.

8. The air conditioner according to claim 6 or 7, characterized by The air conditioner further comprises: a distance sensor which is arranged at the lower end of the float ball and is used for detecting the height of the float ball from the bottom of the condensate water groove; and The control device for the air conditioner as claimed in claim 5.

9. A storage medium storing program instructions, characterized in that, The program instructions are executed to perform the control method for the air conditioner as claimed in any one of claims 1 to 4 when running.

Images