Water level control method of air conditioner and air conditioner

Abstract

A water level control method for an air conditioner is provided. The air conditioner includes a first blower, a condenser, a compressor, a water tank, a water spraying wheel, and a water spraying motor. The first blower is configured to dissipate heat from the condenser and the compressor, and the water spraying motor is configured to drive the water spraying wheel to rotate to spray the condensed water in the water tank onto the condenser. The water level control method of the air conditioner includes: determining whether the water level of the condensed water reaches a first preset water level; if the water level of the condensed water reaches the first preset water level, controlling the first blower to operate at the lowest speed and controlling the water spraying motor to operate at the highest speed, and detecting the condenser temperature, and controlling the operating frequency of the compressor according to the condenser temperature.

Description

[0001] This application claims priority to Chinese patent application No. 202110842655.3, filed on July 26, 2021, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of air conditioning technology, and more particularly to a water level control method for an air conditioner. Background Technology

[0003] With the advancement of technology and the improvement of people's living standards, air conditioners have gradually entered people's lives, becoming an indispensable product in work and daily life. Air conditioners execute a refrigeration cycle using a compressor, condenser, expansion valve, and evaporator. After running in cooling or dehumidification mode for an extended period, air conditioners will produce a large amount of condensate. Summary of the Invention

[0004] On one hand, a water level control method for an air conditioner is provided. The air conditioner includes a first fan, a condenser, a compressor, a water tank, a water jet, and a water jet motor. The first fan is configured to dissipate heat from the condenser and the compressor, and the water jet motor is configured to drive the water jet to rotate to spray condensate from the water tank onto the condenser. The water level control method for the air conditioner includes: determining whether the condensate level has reached a first preset level; if the condensate level has reached the first preset level, controlling the first fan to operate at its lowest speed and controlling the water jet motor to operate at its highest speed, detecting the condenser temperature, and controlling the operating frequency of the compressor based on the condenser temperature.

[0005] On the other hand, an air conditioner is provided. The air conditioner includes a memory and a processor. The memory stores one or more computer programs, which include instructions. When the instructions are executed by the processor, the air conditioner performs the water level control method described above.

[0006] In another aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores computer program instructions that, when executed by a computer, cause the computer to perform one or more steps as described in the water level control method for an air conditioner. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly introduced below. However, the drawings described below are merely drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. Furthermore, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc., involved in the embodiments of this disclosure.

[0008] Figure 1 This is a schematic diagram of an air conditioner according to some embodiments;

[0009] Figure 2 This is a schematic diagram of another air conditioner according to some embodiments;

[0010] Figure 3 This is a schematic diagram of a water tank, an electric water pump, and a water impeller for an air conditioner according to some embodiments;

[0011] Figure 4 This is a flowchart of a water level control method for an air conditioner according to some embodiments;

[0012] Figure 5 This is another flowchart of a water level control method for an air conditioner according to some embodiments;

[0013] Figure 6 This is yet another flowchart of a water level control method for an air conditioner according to some embodiments;

[0014] Figure 7 This is yet another flowchart of a water level control method for an air conditioner according to some embodiments;

[0015] Figure 8 This is yet another flowchart of a water level control method for an air conditioner according to some embodiments;

[0016] Figure 9 This is yet another flowchart of a water level control method for an air conditioner according to some embodiments;

[0017] Figure 10 This is yet another flowchart of a water level control method for an air conditioner according to some embodiments;

[0018] Figure 11 This is a block diagram of another air conditioner according to some embodiments. Detailed Implementation

[0019] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0020] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0021] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0022] In describing some embodiments, the term "connection" and its derivative expressions may be used. For example, the term "connection" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact with each other. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0023] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0024] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0025] As used herein, depending on the context, the term “if” may optionally be interpreted as meaning “when”, “in the event of”, “in response to determination”, or “in response to detection”. Similarly, depending on the context, the phrase “if it is determined that…” or “if [the stated condition or event] is detected” may optionally be interpreted as meaning “in the event of determination that…”, “in response to determination that…”, “when [the stated condition or event] is detected”, or “in response to the detection of [the stated condition or event]”.

[0026] The use of “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0027] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0028] As used herein, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the given value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0029] As used herein, “parallel,” “perpendicular,” and “equal” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°; “equal” includes absolute equality and approximate equality, where an acceptable range of deviation for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0030] Provide an air conditioner. For example... Figure 1As shown, the air conditioner 1000 is a split-type air conditioner composed of an outdoor unit 10 and an indoor unit 20. The outdoor unit 10 and the indoor unit 20 are connected by pipes to transfer refrigerant. The outdoor unit 10 includes a compressor 101, a four-way valve 102, an outdoor heat exchanger 103, a first fan 104, and an expansion valve 105. The indoor unit 20 includes an indoor heat exchanger 201 and a second fan 202. The compressor 101, the outdoor heat exchanger 103, the expansion valve 105, and the indoor heat exchanger 201, connected in sequence, form a refrigerant circuit. The refrigerant circulates in the refrigerant circuit and exchanges heat with the air through the outdoor heat exchanger 103 and the indoor heat exchanger 201, respectively, to achieve the cooling mode or heating mode of the air conditioner 1000.

[0031] The compressor 101 is configured to compress the refrigerant so that the low-pressure refrigerant is compressed to form a high-pressure refrigerant.

[0032] The outdoor heat exchanger 103 is configured to exchange heat between outdoor air and refrigerant transported within it. For example, in the cooling mode of the air conditioner 1000, the outdoor heat exchanger 103 operates as a condenser, causing the refrigerant compressed by the compressor 101 to dissipate heat to the outdoor air and condense through the outdoor heat exchanger 103; in the heating mode of the air conditioner 1000, the outdoor heat exchanger 103 operates as an evaporator, causing the depressurized refrigerant to absorb heat from the outdoor air and evaporate through the outdoor heat exchanger 103.

[0033] In some embodiments, the outdoor heat exchanger 103 further includes heat exchange fins to increase the contact area between the outdoor air and the refrigerant transported in the outdoor heat exchanger 103, thereby improving the heat exchange efficiency between the outdoor air and the refrigerant.

[0034] The first fan 104 is configured to draw outdoor air into the outdoor unit 10 through the outdoor air inlet, and to discharge the outdoor air, after heat exchange with the outdoor heat exchanger 103, through the outdoor air outlet of the outdoor unit 10. The first fan 104 provides power for the flow of outdoor air.

[0035] Expansion valve 105 is connected between outdoor heat exchanger 103 and indoor heat exchanger 201. The opening degree of expansion valve 105 regulates the refrigerant pressure flowing through outdoor heat exchanger 103 and indoor heat exchanger 201, thereby regulating the refrigerant flow rate between them. The flow rate and pressure of the refrigerant flowing between outdoor heat exchanger 103 and indoor heat exchanger 201 affect the heat exchange performance of both. Expansion valve 105 can be an electronic valve. The opening degree of expansion valve 105 is adjustable to control the flow rate and pressure of the refrigerant flowing through it.

[0036] The four-way valve 102 is connected to the refrigerant circuit and is controlled by the controller 30 to switch the flow direction of the refrigerant in the refrigerant circuit so that the air conditioner 1000 can perform cooling mode or heating mode.

[0037] The indoor heat exchanger 201 is configured to exchange heat between indoor air and refrigerant transported within it. For example, in the cooling mode of the air conditioner 1000, the indoor heat exchanger 201 operates as an evaporator, causing the refrigerant, after dissipating heat via the outdoor heat exchanger 103, to absorb heat from the indoor air and evaporate through the indoor heat exchanger 201; in the heating mode of the air conditioner 1000, the indoor heat exchanger 201 operates as a condenser, causing the refrigerant, after absorbing heat via the outdoor heat exchanger 103, to dissipate heat to the indoor air and condense through the indoor heat exchanger 201.

[0038] In some embodiments, the indoor heat exchanger 201 further includes heat exchange fins to increase the contact area between indoor air and the refrigerant transported in the indoor heat exchanger 201, thereby improving the heat exchange efficiency between indoor air and the refrigerant.

[0039] The second fan 202 is configured to draw indoor air into the indoor unit 20 through the indoor air inlet, and to discharge the indoor air, after heat exchange with the indoor heat exchanger 201, through the indoor air outlet of the indoor unit 20. The second fan 202 provides power for the flow of indoor air.

[0040] The controller 30 is configured to control the operating frequency of the compressor 101, the opening degree of the expansion valve 105, the speed of the first fan 104, and the speed of the second fan 202. The controller 30 is connected to the compressor 101, the expansion valve 105, the first fan 104, and the second fan 202 via a data cable to transmit communication information.

[0041] Controller 30 includes a processor. The processor may include a central processing unit (CPU), a microprocessor, or an application-specific integrated circuit (ASIC), and may be configured to perform the corresponding operations described in controller 30 when the processor executes a program stored in a non-transitory computer-readable medium coupled to controller 30. The non-transitory computer-readable storage medium may include magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), smart cards, or flash memory devices (e.g., erasable programmable read-only memory (EPROM), cards, sticks, or keyboard drives). When air conditioner 1000 operates in cooling mode, outdoor heat exchanger 103 acts as a condenser, and indoor heat exchanger 201 acts as an evaporator. The condenser dissipates heat from the refrigerant inside to the outdoor air, while the refrigerant in the evaporator absorbs heat from the indoor air to lower the indoor temperature; therefore, the condenser temperature is high, and the evaporator temperature is low. When the evaporator temperature is lower than the indoor temperature, water vapor in the indoor air condenses into liquid water on the surface of the evaporator. Especially in summer when the air humidity is high and contains a lot of moisture, condensation is more likely to form on the surface of the evaporator.

[0042] The dehumidification mode (especially the cooling and dehumidification mode) of the 1000 air conditioner works by utilizing the principle that water vapor in the air will condense into liquid water when it encounters cold air.

[0043] When the air conditioner 1000 is operating in heating mode, the outdoor heat exchanger 103 acts as the evaporator and the indoor heat exchanger 201 acts as the condenser. The condenser dissipates the heat of its internal refrigerant into the indoor air to raise the indoor temperature, while the refrigerant in the evaporator absorbs heat from the outdoor air. Therefore, the condenser has a higher temperature and the evaporator has a lower temperature. When the evaporator temperature is lower than the outdoor temperature, water vapor in the outdoor air condenses into liquid water on the surface of the evaporator. However, the air humidity is generally low in winter, containing little moisture, so condensation does not easily form on the surface of the evaporator when the air conditioner 1000 is operating in heating mode.

[0044] The above description illustrates an example of an air conditioner 1000 being a split-type air conditioner, but this disclosure is not limited thereto. In some embodiments, the air conditioner 1000 may also be an integrated air conditioner.

[0045] like Figure 2As shown, the air conditioner 1000 includes a housing 40, a first fan 104, a second fan 202, and a display device 1001. When the air conditioner 1000 is operating in cooling or dehumidification mode, the first fan 104 is located at the lower part (N side) of the housing 40 and is configured to dissipate heat from the condenser and compressor 101 to reduce their temperature. The second fan 202 is located at the upper part (M side) of the housing 40 and is configured to promote the circulation and exchange of air inside and outside the air conditioner 1000. The display device 1001 can be located at the upper part of the housing 40 and can display information such as the operating mode and temperature of the air conditioner 1000.

[0046] It should be noted that when the air conditioner 1000 is an integrated air conditioner, the outdoor heat exchanger 103 is located inside the housing 40. For example, the outdoor heat exchanger 103 can be connected to the outdoor air through a pipe; or, the outdoor heat exchanger 103 can be connected to the outside air of the air conditioner 1000.

[0047] As the above analysis shows, air conditioner 1000 will produce a large amount of condensate after running in cooling or dehumidification mode for an extended period. Therefore, if... Figure 3 As shown, the air conditioner 1000 also includes a water tank 1002, a water pump 1003, and a water pump motor 1004.

[0048] The water tank 1002 is configured to hold the condensate generated during the operation of the air conditioner 1000. Since both the indoor heat exchanger 201 and the outdoor heat exchanger 103 may be used as evaporators, the condensate generated by both flows into the water tank 1002. When the air conditioner 1000 is operating in cooling or dehumidification mode, for example, the water tank 1002 may be located near the outdoor heat exchanger 103.

[0049] The water pump motor 1004 is configured to drive the water pump wheel 1003 to rotate, spraying the condensate in the water tank 1002 onto the condenser. The heat generated by the condenser evaporates the sprayed condensate, thereby lowering the water level in the water tank 1002. It also cools the condenser. When the air conditioner 1000 is operating in cooling or dehumidification mode as an example, the condenser refers to the outdoor heat exchanger 103.

[0050] In some embodiments, such as Figure 1 and Figure 3 As shown, the air conditioner 1000 also includes a first water level switch 1005, a second water level switch 1006, a first temperature sensor 1007, and a second temperature sensor 1008.

[0051] The first water level switch 1005 and the second water level switch 1006 are configured to detect the water level of condensate in the water tank 1002.

[0052] The first temperature sensor 1007 is configured to detect the temperature of the condenser, and the second temperature sensor 1008 is configured to detect the ambient temperature outside the air conditioner 1000.

[0053] The first fan 104 is configured to dissipate heat from the condenser and compressor 101 to reduce the temperature of the condenser and compressor 101, and the second fan 202 is configured to promote the circulation and exchange of air inside the air conditioner 1000 with outside air.

[0054] After the air conditioner 1000 has been running in cooling or dehumidifying mode for a period of time, if the rate of condensate accumulation exceeds the evaporation rate of the condensate by the condenser, the condensate level will continue to rise even though the condensate in the water tank 1002 is evaporated by the condenser. Therefore, it is necessary to control the condensate level in the water tank 1002 in a timely manner.

[0055] like Figure 4 As shown, some embodiments of this disclosure provide a water level control method for an air conditioner, which can be applied to integrated air conditioners (such as portable air conditioners) or split-type air conditioners. The water level control method for this air conditioner includes steps 1 to 4.

[0056] In step 1, the controller 30 determines whether the water level of the condensate has reached the first preset water level A.

[0057] For example, refer to Figure 3 The first preset water level A can be two-thirds of the maximum capacity of the water tank 1002. The first water level switch 1005 can detect whether the water level of the condensate in the water tank 1002 has reached the first preset water level A, and send the detection result to the controller 30. The first water level switch 1005 can be a capacitive level switch or a float level switch.

[0058] In step 2, if the condensate water level reaches the first preset water level A, the controller 30 controls the first fan 104 to run at the lowest speed and controls the water pump motor 1004 to run at the highest speed, and detects the condenser temperature T, and controls the operating frequency of the compressor 101 according to the condenser temperature T.

[0059] For example, the rotational speed range of the first fan 104 is 650 r / min to 1000 r / min (e.g., 650 r / min, 750 r / min, 850 r / min, 950 r / min or 1000 r / min). In this case, the minimum rotational speed of the first fan 104 is 650 r / min.

[0060] Since the actual speed of the water pump motor 1004 is affected by the amount of condensate in the water tank 1002, the actual speed of the water pump motor 1004 deviates from the ideal speed. Therefore, in some embodiments, the highest speed of the water pump motor 1004 under no-load conditions (e.g., 3700 r / min) can be selected as the highest speed of the water pump motor 1004.

[0061] For example, the condenser temperature T can be detected by the first temperature sensor 1007. The speed of the first fan 104 and the water pump motor 1004, as well as the operating frequency of the compressor 101, can be controlled by the controller 30.

[0062] The logic (software) of the water level control method for an air conditioner according to some embodiments of this disclosure can be written into the controller 30 of the air conditioner 1000.

[0063] It should be noted that the air conditioner 1000 needs to run for 20 to 30 minutes before detecting the condenser temperature T. After running for 20 to 30 minutes, the air conditioner 1000 operates more stably. At this time, the condenser temperature T gradually rises. Under these conditions, the controller 30 detects the condenser temperature T through the first temperature sensor 1007 and can more accurately control the operating frequency of the compressor 101 based on the condenser temperature T.

[0064] In some embodiments, such as Figure 5 As shown, the operating frequency of compressor 101 is controlled according to the condenser temperature T, including steps 21 to 25.

[0065] In step 21, the controller 30 determines whether the condenser temperature T is less than or equal to the first preset temperature T1.

[0066] In step 22, if the condenser temperature T is less than or equal to the first preset temperature T1, the controller 30 increases the operating frequency of the compressor 101.

[0067] In step 23, if the condenser temperature T is greater than the first preset temperature T1, the controller 30 determines whether the condenser temperature T is less than the second preset temperature T2.

[0068] In step 24, if the condenser temperature T is greater than the first preset temperature T1 and less than the second preset temperature T2, the controller 30 reduces the operating frequency of the compressor 101.

[0069] In step 25, if the condenser temperature T is greater than or equal to the second preset temperature T2, the controller 30 controls the first fan 104 to run at the highest speed and controls the water pump motor 1004 to run at the highest speed, and detects the ambient temperature T0, and controls the operating frequency of the compressor 101 according to the ambient temperature T0.

[0070] The ambient temperature T0 can be detected by the second temperature sensor 1008.

[0071] In some embodiments of this disclosure, when the condensate level in the water tank 1002 reaches a first preset level A, the first fan 104 is controlled to operate at its lowest speed to reduce the heat dissipation effect of the first fan 104 on the condenser. Since the air conditioner 1000 is still running, the condenser can generate heat, which helps to accelerate the evaporation rate of the condensate. Furthermore, by controlling the water pump motor 1004 to operate at its highest speed, the speed at which the water pump motor 1004 sprays the condensate from the water tank 1002 onto the condenser can be accelerated. This allows the condensate in the water tank 1002 to be quickly evaporated by the condenser, achieving the purpose of lowering the condensate level.

[0072] However, in some embodiments, even when the first fan 104 is operating at its lowest speed and the water pump 1004 is operating at its highest speed, the water level of the condensate in the water tank 1002 may still continue to rise. When the condenser temperature T is less than or equal to the first preset temperature T1, there is still room for the condenser temperature T to increase. By increasing the operating frequency of the compressor 101, the heat exchange efficiency of the condenser can be improved, thereby increasing the cooling capacity of the air conditioner 1000 and accelerating the evaporation of the condensate.

[0073] When the condenser temperature T is greater than the first preset temperature T1 but less than the second preset temperature T2, the condenser temperature T is considered high. The controller 30 needs to reduce the operating frequency of the compressor 101 to prevent damage to the condenser due to excessively high condenser temperature T, thereby improving the overall safety of the air conditioner 1000. Furthermore, when the operating frequency of the compressor 101 is reduced, the rate of condensate production also decreases accordingly, thus reducing the rate of rise of the condensate level in the water tank 1002.

[0074] When the condenser temperature T is greater than or equal to the second preset temperature T2, it indicates that the condenser temperature T is too high (for example, close to the maximum temperature that the condenser can withstand, 47°C), and the condenser is prone to damage. Therefore, it is necessary to control and increase the speed of the first fan 104 to improve the heat dissipation effect of the first fan 104 on the condenser, thereby reducing the condenser temperature T.

[0075] In addition, the controller 30 can also determine whether the air conditioner 1000 is under heavy load when it is running based on the ambient temperature T0, thereby reducing the operating frequency of the compressor 101.

[0076] In some embodiments, such as Figure 6 As shown, the operating frequency of compressor 101 is controlled according to the ambient temperature T0, including steps 251 to 253.

[0077] In step 251, the controller 30 determines whether the ambient temperature T0 is greater than the first preset ambient temperature T. 01 .

[0078] In step 252, if the ambient temperature T0 is greater than the first preset ambient temperature T 01 Then the controller 30 will stop the compressor 101.

[0079] In step 253, if the ambient temperature T0 is less than or equal to the first preset ambient temperature T 01 Then the controller 30 controls the reduction of the operating frequency of the compressor 101.

[0080] For example, when the ambient temperature T0 is greater than the first preset ambient temperature T 01 When the temperature reaches a certain level, it indicates that both the condenser temperature T and the ambient temperature T0 are high, resulting in a heavy load on the compressor 101. The heat generated by the condenser cannot evaporate the condensate in time. Therefore, the controller 30 needs to shut down the compressor 101 to prevent damage to the condenser caused by the compressor 101 continuing to run and causing the condenser temperature T to rise further. Furthermore, shutting down the compressor 101 by the controller 30 can also prevent condensate from overflowing due to the condensate level in the water tank 1002 continuing to rise.

[0081] When the ambient temperature T0 is less than or equal to the first preset ambient temperature T 01 At this time, although the condenser temperature T is very high (for example, the condenser temperature T is greater than 45°C), the ambient temperature T0 is not high. In this case, by reducing the operating frequency of the compressor 101 by the controller 30, the condenser temperature T can be prevented from being too high (for example, the condenser temperature T is greater than 47°C), so that the air conditioner 1000 can continue to operate.

[0082] In some embodiments, the first preset temperature T1 is 36℃~40℃, the second preset temperature T2 is 43℃~47℃, and the first preset ambient temperature T 01 The temperature ranges from 30℃ to 34℃.

[0083] Here, the first preset temperature T1, the second preset temperature T2, and the first preset ambient temperature T 01 The appropriate preset temperature can be selected based on the air conditioner model. For example, the first preset temperature T1 can be 36℃, 38℃, or 40℃, etc., and the second preset temperature T2 can be 43℃, 45℃, or 47℃, etc., and the first preset ambient temperature T... 01 It can be 30℃, 32℃ or 34℃, etc.

[0084] The condenser temperature T and the ambient temperature T0 each have different preset values ​​(i.e., the condenser temperature T corresponds to the first preset temperature T1 and the second preset temperature T2, and the ambient temperature T0 corresponds to the first preset ambient temperature T0). 01 correspond).

[0085] Reference Figures 4 to 6 In step 3, the controller 30 determines whether the water level of the condensate has reached the second preset water level B.

[0086] For example, refer to Figure 3 The second preset water level B is the maximum capacity of the water tank 1002, and the second preset water level B is set higher than the first preset water level A. The water level of the condensate in the water tank 1002 can be detected by the second water level switch 1006 to determine whether it has reached the second preset water level B. The second water level switch 1006 can be a capacitive level switch or a float level switch.

[0087] It should be noted that the above description of the first preset water level A and the second preset water level B is merely exemplary and should not be construed as a limitation of this disclosure. The specific positions of the first preset water level A and the second preset water level B can be adaptively set according to actual circumstances.

[0088] It should be noted that, referring to Figure 3 The water tank 1002 includes a water tank body 10021 and an overflow prevention channel 10022 connected to the water tank body 10021. For example, the capacity of the overflow prevention channel 10022 is approximately one-third of the maximum capacity of the water tank body 10021. When the condensate water level reaches a second preset water level B, if the condensate water cannot be evaporated by the condenser in time, it can be collected by the overflow prevention channel 10022, thereby preventing condensate water from overflowing from the water tank 1002 due to the condenser's inability to evaporate the condensate water in time.

[0089] Here, the maximum capacity of the water tank 1002 described above is the same as the maximum capacity of the water tank body 10021.

[0090] Reference Figures 4 to 6 In step 4, if the condensate water level reaches the second preset water level B, the controller 30 detects the condenser temperature T and the ambient temperature T0, and controls whether the compressor 101 stops based on the condenser temperature T and the ambient temperature T0.

[0091] For example, the condenser temperature T can be detected by the first temperature sensor 1007, and the ambient temperature T0 can be detected by the second temperature sensor 1008.

[0092] When the condensate water level reaches the second preset level B, the controller 30 controls whether the compressor 101 should stop based on the detected condenser temperature T and ambient temperature T0. For example, if the condenser temperature T and ambient temperature T0 are too high (e.g., condenser temperature T greater than 47°C and ambient temperature T0 greater than 34°C), it indicates that the air conditioner 1000 is under heavy load, the condenser's evaporation capacity is insufficient, and the condensate water level in the water tank 1002 cannot be effectively reduced by the evaporation action of the condenser. To avoid safety hazards caused by excessively high condensate water levels (e.g., reaching the second preset level B) and excessively high condenser temperatures T, the controller 30 needs to promptly stop the compressor 101.

[0093] In some embodiments, such as Figures 4 to 6 As shown, step 4: if the condensate water level reaches the second preset water level B, the controller 30 controls whether the compressor 101 stops based on the condenser temperature T and the ambient temperature T0. Step 4 also includes steps 41 to 43.

[0094] like Figure 7 As shown, in step 41, the controller 30 determines whether the condenser temperature T is less than the third preset temperature T3 and whether the ambient temperature T0 is less than the second preset ambient temperature T. 02 .

[0095] In step 42, if the condenser temperature T is greater than or equal to the third preset temperature T3, or the ambient temperature T0 is greater than or equal to the second preset ambient temperature T 02 Then the controller 30 will stop the compressor 101.

[0096] When the condensate water level reaches the second preset level B, the controller 30 needs to promptly lower the condensate water level. The controller 30 controls whether the compressor 101 should be stopped by judging the condenser temperature T and the ambient temperature T0.

[0097] For example, when the condenser temperature T is greater than or equal to the third preset temperature T3, or the ambient temperature T0 is greater than or equal to the second preset ambient temperature T 02 When the load on the air conditioner 1000 is large, the controller 30 needs to stop the compressor 101 in time to prevent the compressor 101 from continuing to produce condensate, thus preventing condensate overflow. In addition, by controlling the compressor 101 to stop, the controller 30 can also prevent the condenser temperature T from continuing to rise, thereby ensuring the safety of the air conditioner 1000.

[0098] In step 43, if the condenser temperature T is less than the third preset temperature T3 and the ambient temperature T0 is less than the second preset ambient temperature T... 02Then the controller 30 controls the first fan 104 to run at the lowest speed and controls the second fan 202 to run at the highest speed, and increases the operating frequency of the compressor 101.

[0099] For example, when the condenser temperature T is less than the third preset temperature T3 and the ambient temperature T0 is less than the second preset ambient temperature T 02 This indicates that the condenser temperature T still has room for improvement, and the compressor 101 can still operate. By increasing the operating frequency of the compressor 101, the evaporation rate of the condensate can be accelerated, thereby reducing the condensate level. Furthermore, by controlling the second fan 202 to operate at high speed, the speed at which the water vapor after condensate evaporation is discharged outdoors can be accelerated, reducing the water vapor content inside the air conditioner 1000, thereby promoting the evaporation of condensate in the condenser.

[0100] For example, the rotational speed of the second fan 202 is 750 r / min to 1200 r / min (e.g., 750 r / min, 850 r / min, 950 r / min, 1050 r / min or 1200 r / min). In this case, the maximum rotational speed of the second fan 202 is 1200 r / min.

[0101] In some embodiments, such as Figure 8 As shown, after step 43, step 4 further includes steps 44 to 49.

[0102] In step 44, if the condenser temperature T is less than the third preset temperature T3 and the ambient temperature T0 is less than the second preset ambient temperature T... 02 Then the timer starts.

[0103] For example, a timer can be used to monitor whether the condenser temperature T is less than a third preset temperature T3 and the ambient temperature T0 is less than a second preset ambient temperature T. 02 The duration t is used for timing.

[0104] It should be noted that when the condenser temperature T is less than the third preset temperature T3 and the ambient temperature T0 is less than the second preset ambient temperature T... 02 The initial value of the timer is zero until the condition is met.

[0105] In step 45, the controller 30 obtains that the condenser temperature T is less than the third preset temperature T3 and the ambient temperature T0 is less than the second preset ambient temperature T. 02 The condenser temperature T becomes greater than or equal to the third preset temperature T3, or the ambient temperature T0 becomes greater than or equal to the second preset ambient temperature T. 02 The duration t.

[0106] In step 46, the controller 30 determines whether the duration t has reached the predetermined time t0. If not, it returns to step 41; if yes, it proceeds to step 47.

[0107] For example, when the duration t has not reached the predetermined time t0, the condenser temperature T may rise to a level greater than or equal to a third preset temperature T3, or the ambient temperature T0 may rise to a level greater than or equal to a second preset ambient temperature T. 02 At this time, the air conditioner 1000 is operating under rather harsh conditions, and the condenser cannot evaporate the condensate in time. Therefore, it is necessary to stop the compressor 101 in time to prevent the condenser temperature from getting too high and to prevent the condensate level from continuing to rise.

[0108] In step 47, if the duration t is greater than or equal to the predetermined time t0, the controller 30 determines whether the water level of the condensate has reached the second preset water level B.

[0109] In step 48, if the condensate water level reaches the second preset water level B, the controller 30 controls the compressor 101 to stop.

[0110] For example, when the duration t has not reached the predetermined time t0, the condenser continues to evaporate condensate. When the duration t reaches the predetermined time t0, if the condensate level reaches the second preset level B, it indicates that the condensate level is still very high. To prevent the condensate level from rising further, the controller 30 needs to promptly stop the compressor 101 to prevent further condensate production and thus prevent condensate overflow. Furthermore, by controlling the compressor 101 to stop, the controller 30 can also prevent the condenser temperature T from rising further, thereby ensuring the safety of the air conditioner 1000.

[0111] For example, when the compressor 101 stops, the display device 1001 of the air conditioner 1000 (e.g., a display screen, etc.) can display a fault code, so that the user can promptly detect the problem of excessively high condensate water level and take timely countermeasures.

[0112] If the condensate water level does not reach the second preset water level B, the controller 30 returns to step 1.

[0113] For example, when the duration t reaches the predetermined time t0, if the water level of the condensate is lower than the second preset water level B, it indicates that the water level of the condensate has dropped. At this time, the controller 30 determines again whether the water level of the condensate has reached the first preset water level A (i.e., the above-mentioned return to execution step 1).

[0114] In some embodiments, the predetermined time t0 is 28 min to 60 min, for example, the predetermined time t0 can be 28 min, 30 min, 45 min or 60 min, etc.

[0115] During the predetermined time t0, although the condenser continuously evaporates condensate, the condensate level may still rise or fall. When the predetermined time t0 is 30 min or 60 min, if the condensate level rises, the condensate will not overflow; and the predetermined time t0 can also meet the needs of evaporating condensate.

[0116] In addition, it is beneficial to ensure the safe operation of the air conditioner 1000 by determining whether the water level of the condensate has reached the second preset water level B after the duration t reaches the predetermined time t0.

[0117] In some embodiments, the third preset temperature T3 is 43℃~47℃, and the second preset ambient temperature T 02 The temperature ranges from 30℃ to 34℃.

[0118] For example, the third preset temperature T3 is 43℃, 45℃, or 47℃, etc., and the second preset ambient temperature T 02 The temperature can be set to 30℃, 32℃, or 34℃, etc., to achieve timely and accurate control of the condenser temperature T and the ambient temperature T0.

[0119] For example, the third preset temperature T3 and the second preset temperature T2 may be equal or unequal, and the second preset ambient temperature T... 02 With the first preset ambient temperature T 01 They can be equal or unequal.

[0120] The following combination Figure 9 and Figure 10 The water level control method of an air conditioner according to some embodiments of the present disclosure is described by way of example.

[0121] When the air conditioner 1000 is running in cooling mode or dehumidification mode, the condensate produced by the air conditioner 1000 flows into the water tank 1002.

[0122] like Figure 9 As shown, when the condensate water level reaches the first preset water level A, the controller 30 controls the first fan 104 to run at the lowest speed and the water pump motor 1004 to run at the highest speed. The controller 30 acquires the condenser temperature T detected by the first temperature sensor 1007 and determines whether the condenser temperature T is less than or equal to the first preset temperature T1. When the condenser temperature T is less than or equal to the first preset temperature T1, the controller 30 controls the compressor 101 to increase its operating frequency.

[0123] When the condenser temperature T is greater than the first preset temperature T1, the controller 30 further determines whether the condenser temperature T is less than the second preset temperature T2. If the condenser temperature T is greater than the first preset temperature T1 and less than the second preset temperature T2, the controller 30 reduces the operating frequency of the compressor 101.

[0124] If the condenser temperature T is greater than or equal to the second preset temperature T2, the controller 30 controls the first fan 104 to run at its highest speed and the water pump motor 1004 to run at its highest speed. It also obtains the ambient temperature T0 through the second temperature sensor 1008 and determines whether the ambient temperature T0 is greater than the first preset ambient temperature T2. 01 If the ambient temperature T0 is greater than the first preset ambient temperature T... 01 Then controller 30 controls compressor 101 to stop. If the ambient temperature T0 is less than or equal to the first preset ambient temperature T 01 If so, the controller 30 will reduce the operating frequency of the compressor 101.

[0125] like Figure 10 As shown, when the condensate water level reaches the second preset water level B, the controller 30 determines whether the condenser temperature T is less than the third preset temperature T3 and whether the ambient temperature T0 is less than the second preset ambient temperature T. 02 .

[0126] If the condenser temperature T is greater than or equal to the third preset temperature T3, or the ambient temperature T0 is greater than or equal to the second preset ambient temperature T 02 If the controller 30 stops the compressor 101 and displays a fault code, the controller 30 will control the compressor 101 to stop.

[0127] If the condenser temperature T is less than the third preset temperature T3 and the ambient temperature T0 is less than the second preset ambient temperature T 02 Then the controller 30 controls the first fan 104 to run at the lowest speed, the water pump motor 1004 to run at the highest speed, and controls the second fan 202 to run at the highest speed and increases the operating frequency of the compressor 101.

[0128] When the condenser temperature T is less than the third preset temperature T3 and the ambient temperature T0 is less than the second preset ambient temperature T 02 When the condenser temperature T is less than the third preset temperature T3 and the ambient temperature T0 is less than the second preset ambient temperature T, the timer is used to monitor the temperature. 02 The timer is used to time the duration t. The initial value of the timer is 0 before it begins timing the duration t.

[0129] Determine whether the duration t has reached the predetermined time t0. If the duration t has not reached the predetermined time t0, and the condenser temperature T is greater than or equal to the third preset temperature T3, or the ambient temperature T0 is greater than or equal to the second preset ambient temperature T0 during the timing process. 02 Then the controller 30 will stop the compressor 101.

[0130] When the duration t reaches the predetermined time t0, the controller 30 further determines whether the condensate water level has reached the second preset water level B. If the condensate water level reaches the second preset water level B, the controller 30 controls the compressor 101 to stop and displays a fault code. If the condensate water level has not reached the second preset water level B, the controller 30 determines whether the condensate water level has reached the first preset water level A.

[0131] The water level control method for air conditioners according to the embodiments of this disclosure has the advantages of precise water level control and safety and reliability.

[0132] like Figure 11 As shown, some embodiments of this disclosure also provide an air conditioner 2000, including a memory 210 and a processor 220. The memory 210 stores one or more computer programs, which include instructions. When the instructions are executed by the processor 220, the air conditioner 2000 performs the aforementioned water level control method for air conditioners.

[0133] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a controller, cause the controller (e.g., a microcontroller or microprocessor) to perform the water level control method for an air conditioner as described in any of the embodiments above.

[0134] For example, the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., CDs (Compact Disks), DVDs (Digital Versatile Disks), etc.), smart cards and flash memory devices (e.g., EPROMs (Erasable Programmable Read-Only Memory), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure can represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0135] This disclosure provides a computer program product in several embodiments. The computer program product includes computer program instructions (stored, for example, on a non-transitory computer-readable storage medium) that, when executed on a computer, cause the computer to perform the water level control method for an air conditioner as described in the above embodiments.

[0136] This disclosure provides a computer program in some embodiments. When executed on a computer, the computer program causes the computer to perform the water level control method for an air conditioner as described in the above embodiments.

[0137] The beneficial effects of the aforementioned computer-readable storage medium, computer program product, and computer program are the same as the beneficial effects of the water level control method for the air conditioner described in the above embodiments, and will not be repeated here.

[0138] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A water level control method for an air conditioner, characterized in that, The method is applied to the controller of the air conditioner, which includes a first fan, a condenser, a compressor, a water tank, a rotating wheel, and a motor. The first fan is configured to dissipate heat from the condenser and the compressor, and the motor is configured to drive the rotating wheel to rotate so as to spray condensate from the water tank onto the condenser. The water level control method includes: If the condensate water level reaches the first preset water level, control the first fan to run at the lowest speed and control the motor to run at the highest speed, and obtain the condenser temperature, and control at least one of the speed of the first fan, the speed of the motor or the operating frequency of the compressor according to the condenser temperature. If the condensate water level reaches a second preset level, the condenser temperature and ambient temperature are obtained, and the compressor is controlled based on the condenser temperature and the ambient temperature; wherein the second preset water level is higher than the first preset water level. The step of controlling the compressor based on the condenser temperature and the ambient temperature includes: If the condenser temperature is greater than or equal to a third preset temperature, or the ambient temperature is greater than or equal to a second preset ambient temperature, the compressor is controlled to stop. The air conditioner further includes a second fan configured to drive the circulation and exchange of air inside the air conditioner with outside air. The step of controlling the compressor based on the condenser temperature and the ambient temperature also includes: If the condenser temperature is lower than the third preset temperature and the ambient temperature is lower than the second preset ambient temperature, control the first fan to run at the lowest speed, control the second fan to run at the highest speed, increase the operating frequency of the compressor, and start timing; The duration during which the condenser temperature changes from being lower than the third preset temperature and the ambient temperature is lower than the second preset ambient temperature to the condenser temperature being greater than or equal to the third preset temperature, or the ambient temperature being greater than or equal to the second preset ambient temperature; If the duration is less than the predetermined time, return to determine whether the condenser temperature is less than the third preset temperature and whether the ambient temperature is less than the second preset ambient temperature; If the duration is greater than or equal to the predetermined time, the compressor is controlled according to the water level of the condensate.

2. The water level control method for an air conditioner according to claim 1, characterized in that, The step of controlling the operating frequency of the compressor based on the condenser temperature includes: If the condenser temperature is less than or equal to the first preset temperature, the operating frequency of the compressor is increased; If the condenser temperature is greater than the first preset temperature but less than the second preset temperature, reduce the operating frequency of the compressor; If the condenser temperature is greater than or equal to the second preset temperature, the first fan is controlled to run at its highest speed and the motor is controlled to run at its highest speed to obtain the ambient temperature, and the operating frequency of the compressor is controlled according to the ambient temperature.

3. The water level control method for an air conditioner according to claim 2, characterized in that, The step of controlling the operating frequency of the compressor based on the ambient temperature includes: If the ambient temperature is higher than the first preset ambient temperature, control the compressor to stop. If the ambient temperature is less than or equal to the first preset ambient temperature, the operating frequency of the compressor is reduced.

4. The water level control method for an air conditioner according to claim 3, characterized in that, The first preset temperature is any value within the range of 36℃ to 40℃, the second preset temperature is any value within the range of 43℃ to 47℃, and the first preset ambient temperature is any value within the range of 30℃ to 34℃.

5. The water level control method for an air conditioner according to claim 1, characterized in that, Before obtaining the condenser temperature, the method further includes: The air conditioner is controlled to run for a preset duration.

6. The water level control method for an air conditioner according to claim 1, characterized in that, The first fan has a rotational speed range of 650 r / min to 1000 r / min; the motor has a rotational speed range of 1700 r / min to 3700 r / min.

7. The water level control method for an air conditioner according to claim 1, characterized in that, If the duration is greater than or equal to the predetermined time, controlling the compressor based on the condensate water level includes: If the condensate water level reaches the second preset level, the compressor is controlled to stop. If the water level of the condensate does not reach the second preset water level, return to determine whether the water level of the condensate has reached the first preset water level.

8. The water level control method for an air conditioner according to claim 1, characterized in that, The water tank includes a water tank body and an overflow prevention tank connected to the water tank body; the first preset water level is one-third of the maximum capacity of the water tank body; the second preset water level is the maximum capacity of the water tank body.

9. The water level control method for an air conditioner according to claim 8, characterized in that, The capacity of the overflow prevention trough is one-third of the maximum capacity of the main body of the water tank.

10. The water level control method for an air conditioner according to claim 1, characterized in that, The air conditioner includes a first water level switch and a second water level switch. The first water level switch is configured to detect the first preset water level of the condensate in the water tank, and the second water level switch is configured to detect the second preset water level of the condensate in the water tank.

11. The water level control method for an air conditioner according to claim 1, characterized in that, The air conditioner includes a first temperature sensor and a second temperature sensor, the first temperature sensor being configured to detect the temperature of the condenser, and the second temperature sensor being configured to detect the ambient temperature.

12. The water level control method for an air conditioner according to claim 1, characterized in that, The third preset temperature is any value within the range of 43℃ to 47℃, and the second preset ambient temperature is any value within the range of 30℃ to 34℃.

13. The water level control method for an air conditioner according to claim 12, characterized in that, The third preset temperature is equal to the second preset temperature, and the second preset ambient temperature is equal to the first preset ambient temperature.

14. The water level control method for an air conditioner according to claim 1, characterized in that, The predetermined time is any value within the range of 28 min to 60 min.

15. The water level control method for an air conditioner according to claim 1, characterized in that, The second fan has a rotational speed range of any value within the range of 750 r / min to 1200 r / min.

16. An air conditioner, characterized in that, include: Condenser; compressor; A first fan is configured to dissipate heat from the condenser and the compressor; A water tank is configured to hold condensate generated during the operation of the air conditioner; Rotating wheel; A motor is connected to the rotating wheel, and the motor is configured to drive the rotating wheel to rotate so as to spray the condensate in the water tank onto the condenser; as well as The controller is configured to: If the condensate water level reaches the first preset water level, control the first fan to run at the lowest speed and control the motor to run at the highest speed, and obtain the condenser temperature, and control at least one of the speed of the first fan, the speed of the motor or the operating frequency of the compressor according to the condenser temperature. If the condensate water level reaches a second preset level, the condenser temperature and ambient temperature are obtained, and the compressor is controlled based on the condenser temperature and the ambient temperature; wherein the second preset water level is higher than the first preset water level. The controller is configured as follows: If the condenser temperature is greater than or equal to a third preset temperature, or the ambient temperature is greater than or equal to a second preset ambient temperature, the compressor is controlled to stop. The air conditioner further includes a second fan, which is configured to drive the circulation and exchange of air inside the air conditioner with outside air. The controller is further configured to: If the condenser temperature is lower than the third preset temperature and the ambient temperature is lower than the second preset ambient temperature, control the first fan to run at the lowest speed, control the second fan to run at the highest speed, increase the operating frequency of the compressor, and start timing; The duration during which the condenser temperature changes from being lower than the third preset temperature and the ambient temperature is lower than the second preset ambient temperature to the condenser temperature being greater than or equal to the third preset temperature, or the ambient temperature being greater than or equal to the second preset ambient temperature; If the duration is less than the predetermined time, return to determine whether the condenser temperature is less than the third preset temperature and whether the ambient temperature is less than the second preset ambient temperature; If the duration is greater than or equal to the predetermined time, the compressor is controlled according to the water level of the condensate.

17. An air conditioner, characterized in that, include: Memory; as well as processor; The memory stores one or more computer programs, the one or more computer programs including instructions that, when executed by the processor, cause the air conditioner to perform the water level control method of the air conditioner as described in any one of claims 1-15.

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