Control method of air conditioner, operation control device, air conditioner, and storage medium

Abstract

The application provides a control method, operation control device, air conditioner and storage medium of an air conditioner. The control method comprises the following steps: acquiring a first temperature of refrigerant at a middle part of the condenser and a second temperature of refrigerant at an outlet of the condenser; controlling working states of the water adding device and the water beating motor according to the first temperature, or controlling working states of the water adding device and the water beating motor according to the first temperature and the second temperature. According to the technical scheme of the embodiment of the application, the cooling effect of the condenser is accurately judged through the first temperature and the second temperature, and then the working states of the water adding device and the water beating motor are controlled, so that the air conditioner can be self-adjusted to a more optimal operating state, and the energy efficiency of the air conditioner is improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a control method, operation control device, air conditioner, and storage medium for an air conditioner. Background Technology

[0002] Currently, most integrated air conditioners have their condensers located on the indoor side, which usually requires openings in the building's exterior walls to ensure return and exhaust air from the outside. However, due to considerations of aesthetics and user acceptance, the size and number of openings in the walls are limited, which can easily result in relatively low airflow on the condenser side. When the airflow on the condenser side is reduced, the air conditioner is prone to insufficient cooling of the condenser, thereby affecting the overall cooling capacity and reducing the energy efficiency of the air conditioner. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a control method, operation control device, air conditioner, and storage medium for an air conditioner, enabling the air conditioner to self-adjust to an optimal operating state, which is beneficial to improving the energy efficiency of the air conditioner.

[0004] In a first aspect, embodiments of the present invention provide a control method for an air conditioner, the air conditioner being equipped with a condenser, a water pump motor for assisting in cooling the condenser, and a water supply device for providing a water source, the control method comprising:

[0005] Obtain the first temperature of the refrigerant at the middle of the condenser and the second temperature of the refrigerant at the outlet of the condenser;

[0006] The operating state of the water supply device and the water pump motor can be controlled according to the first temperature, or according to the first temperature and the second temperature.

[0007] The air conditioner control method provided by the embodiments of the present invention has at least the following beneficial effects: when the air conditioner is in the on state, by obtaining the first temperature of the refrigerant in the middle of the condenser and the second temperature of the refrigerant at the outlet, the cooling effect of the condenser can be judged more accurately. Then, the working state of the water filling device and the water pumping motor can be controlled according to the first temperature, or the working state of the water filling device and the water pumping motor can be controlled according to the first temperature and the second temperature, so that the air conditioner can self-adjust to a better operating state, which is conducive to improving the energy efficiency of the air conditioner.

[0008] In the control method of the above-mentioned air conditioner, the step of controlling the working state of the water filling device and the water pumping motor according to the first temperature and the second temperature includes:

[0009] When the first temperature is lower than the first preset temperature, the subcooling degree of the condenser is calculated based on the first temperature and the second temperature;

[0010] The operating status of the water supply device and the water pump motor is controlled according to the supercooling degree.

[0011] If the first temperature is less than the first preset temperature, it means that the first temperature is within the allowable range, that is, the subcooling temperature of the condenser is within the allowable range. By further calculating the subcooling of the condenser, the cooling effect of the condenser can be judged more accurately. Controlling the working status of the water supply device and the water pump motor according to the subcooling is beneficial to improving the accuracy of air conditioner control.

[0012] In the control method of the above-mentioned air conditioner, the step of controlling the working state of the water supply device and the water pumping motor according to the subcooling degree includes:

[0013] When the subcooling degree is less than or equal to the second preset temperature, the water adding device and the water pumping motor are turned on.

[0014] If the first temperature is lower than the first preset temperature and the subcooling is less than or equal to the second preset temperature, it indicates that the condenser subcooling is insufficient. Although the first temperature is within the allowable range, the low subcooling will affect the cooling effect of the condenser and thus affect the overall cooling capacity. At this time, it is necessary to turn on the water adding device and the water pumping motor, that is, to turn on the auxiliary cooling mode to improve the heat exchange efficiency on the condenser side and thus ensure that the cooling capacity meets the requirements.

[0015] In the control method of the above-mentioned air conditioner, the step of controlling the working state of the water filling device and the water pumping motor according to the first temperature includes:

[0016] When the first temperature is greater than or equal to the first preset temperature and less than or equal to the third preset temperature, the water adding device and the water pumping motor are turned on.

[0017] It should be noted that if the first temperature is greater than or equal to the first preset temperature, it indicates that the condenser's intermediate temperature is too high, which affects the condenser's cooling effect. It is necessary to turn on the water filling device and water pump motor to increase the condenser's cooling effect. At the same time, it is necessary to ensure that the first temperature is less than or equal to the third preset temperature, which is the upper limit protection temperature.

[0018] In the above-mentioned control method for the air conditioner, when the water filling device and the water pumping motor are turned on, the compressor in the air conditioner is controlled to run continuously at a preset frequency for a first preset time, and then the operating frequency of the compressor is adjusted to the target frequency.

[0019] When the water filling device and water pumping motor need to be turned on, the compressor maintains a preset frequency and runs continuously for a first preset time. During this time, water is stored and pumped for cooling. After running for the first preset time, the compressor's operating frequency is adjusted to the target frequency. This avoids the compressor increasing its frequency when the water supply is insufficient, which would cause the overall temperature and pressure of the unit to rise. This helps to ensure the reliability of the air conditioner.

[0020] The control method for the aforementioned air conditioner also includes:

[0021] Obtain the inlet air temperature of the condenser;

[0022] When the air inlet temperature is greater than the fourth preset temperature, the water filling device and the water pumping motor are started; when the air inlet temperature is less than or equal to the fourth preset temperature, the working state of the water filling device and the water pumping motor is controlled according to the first temperature or according to the first temperature and the second temperature.

[0023] The intake air temperature can be used to determine if the condenser is operating at a high temperature, thus indicating whether enhanced heat exchange on the condenser side is needed. The operation of the water filling device and pump motor is controlled based on the intake air temperature, allowing the air conditioner to automatically adjust to an optimal operating state, which helps improve the air conditioner's energy efficiency. By comparing the intake air temperature with a fourth preset temperature, if the intake air temperature is greater than the fourth preset temperature, it indicates that the outdoor temperature is high, requiring a large cooling capacity. Simple air cooling is insufficient to meet the condenser's heat exchange needs. In this case, the water filling device and pump motor are activated to enhance the condenser's heat exchange efficiency and increase cooling output. If the intake air temperature is less than or equal to the fourth preset temperature, the operation of the water filling device and pump motor is controlled based on either the first temperature or the second temperature.

[0024] In the above-mentioned control method for air conditioners, when the first temperature is greater than the third preset temperature, the operating frequency of the compressor in the air conditioner is limited.

[0025] It should be noted that the third preset temperature is the upper limit protection temperature. If the first temperature is greater than the third preset temperature, it means that the first temperature and condensing pressure have exceeded the upper limit. Even if the water filling device and water pump motor are running at full capacity, the cooling effect of the condenser still cannot meet the current system requirements. Therefore, the operating frequency of the compressor is limited, and the compressor operates at the preset limit frequency, which helps to ensure the reliability of the air conditioner.

[0026] In the control method of the above-mentioned air conditioner, after the compressor runs continuously at the target frequency for a second preset time, the first temperature and the second temperature are acquired again.

[0027] It should be noted that after the compressor's operating frequency is adjusted to the target frequency, the compressor is controlled to run continuously at the target frequency for a second preset time to ensure the stable and reliable operation of the air conditioner. After the compressor runs for the second preset time, the first and second temperatures are obtained again, and the working status of the water filling device and the water pump motor is controlled again based on the new first and second temperatures. This allows for real-time adjustment of the air conditioner's auxiliary cooling mode, which helps to improve the flexibility and accuracy of air conditioner control, thereby improving the air conditioner's energy efficiency.

[0028] In a second aspect, embodiments of the present invention provide an operation control device, including at least one control processor and a memory for communicatively connecting to the at least one control processor; the memory stores instructions executable by the at least one control processor, the instructions being executed by the at least one control processor to enable the at least one control processor to perform the air conditioner control method as described in the first aspect embodiment above.

[0029] The operation control device provided by the embodiments of the present invention has at least the following beneficial effects: when the air conditioner is in the on state, by obtaining the first temperature of the refrigerant in the middle of the condenser and the second temperature of the refrigerant at the outlet, the cooling effect of the condenser can be judged more accurately. Then, the working state of the water filling device and the water pumping motor can be controlled according to the first temperature, or the working state of the water filling device and the water pumping motor can be controlled according to the first temperature and the second temperature, so that the air conditioner can self-adjust to a better operating state, which is conducive to improving the energy efficiency of the air conditioner.

[0030] Thirdly, embodiments of the present invention provide an air conditioner including the operation control device described in the second aspect of the embodiments above.

[0031] The air conditioner provided by the embodiments of the present invention has at least the following beneficial effects: when the air conditioner is in the on state, by obtaining the first temperature of the refrigerant in the middle of the condenser and the second temperature of the refrigerant at the outlet, the cooling effect of the condenser can be judged more accurately. Then, the working state of the water filling device and the water pumping motor can be controlled according to the first temperature, or the working state of the water filling device and the water pumping motor can be controlled according to the first temperature and the second temperature, so that the air conditioner can self-adjust to a better operating state, which is conducive to improving the energy efficiency of the air conditioner.

[0032] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the air conditioner control method described in the first aspect embodiment above.

[0033] The computer-readable storage medium provided according to the embodiments of the present invention has at least the following beneficial effects: when the air conditioner is in the on state, by obtaining the first temperature of the refrigerant in the middle of the condenser and the second temperature of the refrigerant at the outlet, the cooling effect of the condenser can be judged more accurately. Then, the working state of the water filling device and the water pumping motor can be controlled according to the first temperature, or the working state of the water filling device and the water pumping motor can be controlled according to the first temperature and the second temperature, so that the air conditioner can self-adjust to a better operating state, which is conducive to improving the energy efficiency of the air conditioner.

[0034] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0036] Figure 1 This is a schematic diagram of the structure of the air conditioner provided in Embodiment 1 of the present invention.

[0037] Figure 2 This is a flowchart of the control method for an air conditioner provided in Embodiment 2 of the present invention;

[0038] Figure 3 This is a flowchart of the air conditioner control method provided in Embodiment 3 of the present invention;

[0039] Figure 4 This is a flowchart of the control method for an air conditioner provided in Embodiment 4 of the present invention;

[0040] Figure 5 This is an overall flowchart of the control method for an air conditioner provided in Embodiment 5 of the present invention;

[0041] Figure 6 This is a schematic diagram of the operation control device provided in Embodiment Six of the present invention. Detailed Implementation

[0042] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0043] It should be understood that in the description of the embodiments of the present invention, the use of terms such as "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated. "At least one" means one or more; "more than" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number; "several" means one or more, unless otherwise explicitly defined; "and / or" describes the relationship between related objects, indicating that three relationships can exist. It can be understood that A and / or B can represent the existence of A alone, the simultaneous existence of A and B, or the existence of B alone. A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0044] Furthermore, unless otherwise explicitly specified and limited, the term "connection / linkage" should be interpreted broadly. For example, it can be a fixed or movable connection, a detachable or non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between them; it can be a direct connection or an indirect connection through an intermediate medium. It should be noted that although a logical sequence is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown in the flowchart.

[0045] It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] The air conditioner control method, operation control device, air conditioner and storage medium provided in the embodiments of the present invention can improve the heat exchange efficiency of the condenser by timely adjusting the working state of the water filling device, which is beneficial to increasing the cooling capacity of the air conditioner.

[0047] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0048] like Figure 1 As shown, the air conditioner of this embodiment includes a condenser 100, a water pump motor 200, and a water filling device 300. The water filling device 300 is connected to a water source via a water pipe 800, thereby providing sufficient water to the water pump motor 200. The water pump motor 200 is located below the condenser 100. By atomizing the water and exchanging heat with the condenser 100, it can assist in the cooling of the condenser 100. It should be noted that a water receiving tray 400 can be provided below the condenser 100, and the water pump motor 200 can be installed in the water receiving tray 400. The water filling device 300 supplies water to the water receiving tray 400 for the water pump motor 200 to use. The water filling device 300 may include a water pump or a solenoid valve, and no specific limitation is made here.

[0049] It should be noted that after the air conditioner's refrigeration system starts, the compressor 500 draws refrigerant vapor from the evaporator 600, compresses it to condensing pressure, and then supplies it to the condenser 100. The condenser 100 condenses the high-pressure refrigerant vapor from the compressor 500 into refrigerant liquid, and heat exchange occurs during the condensation process. The refrigerant liquid passes through the throttling device 700 for pressure reduction and then enters the evaporator 600, where it absorbs heat and evaporates, turning into a gas. It then enters the compressor 500 for compression, transforming into a high-temperature, high-pressure gas, and then enters the condenser 100 for heat exchange again. This cycle continues, forming the refrigerant flow path. It should also be noted that during the condensation process in the condenser 100, the refrigerant vapor releases heat, requiring cooling with water or air. By installing a water-filling device 300 and a water-pumping motor 200, the heat exchange efficiency of the condenser 100 can be improved, ensuring sufficient cooling on the condenser side and increasing the overall cooling capacity. Furthermore, multiple water-pumping motors 200 can be installed to further enhance the cooling effect of the condenser 100.

[0050] It will be understood by those skilled in the art that Figure 1 The air conditioner shown in the figure does not constitute a limitation on the embodiments of the present invention, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0051] like Figure 2 As shown, based on the above Figure 1 An embodiment of the first aspect of the present invention provides a control method for an air conditioner, including but not limited to steps S110 and S120:

[0052] Step S110: Obtain the first temperature of the refrigerant at the middle of the condenser and the second temperature of the refrigerant at the condenser outlet.

[0053] It should be noted that the first temperature is the mid-condenser temperature, representing the temperature during the refrigerant phase change and condensation process in the condenser, reflecting the cooling effect of the condenser. The second temperature is the outlet temperature, representing the temperature of the refrigerant after it has been completely cooled by the condenser. The quality of heat exchange on the condenser side can be determined based on both the first and second temperatures. Specifically, the first and second temperatures can be obtained by detecting the temperature at the mid-condenser and the outlet temperature using temperature sensors.

[0054] Step S120: Control the working state of the water supply device and the water pumping motor according to the first temperature, or control the working state of the water supply device and the water pumping motor according to the first temperature and the second temperature.

[0055] It is understandable that after obtaining the first temperature and the second temperature, the working state of the water adding device and the water pumping motor can be controlled according to the first temperature, or the working state of the water adding device and the water pumping motor can be controlled according to the first temperature and the second temperature. In addition, controlling the working state of the water adding device and the water pumping motor can specifically be controlling the water adding device to turn on or off, and controlling the water pumping motor to turn on or off.

[0056] It should be noted that when both the water filling device and the water pumping motor are turned on, that is, when the auxiliary cooling mode of water filling and water pumping is activated, the two work together to improve the heat exchange efficiency of the condenser, which can solve the problem of insufficient cooling of the condenser under low air volume, thus improving the cooling capacity of the air conditioner, thereby improving the user experience, while ensuring the reliability of the whole machine.

[0057] The air conditioner control method provided in the first aspect embodiment above can more accurately determine the cooling effect of the condenser by acquiring the first temperature of the refrigerant in the middle of the condenser and the second temperature of the refrigerant at the outlet when the air conditioner is turned on. Then, the working state of the water filling device and the water pumping motor can be controlled according to the first temperature, or the working state of the water filling device and the water pumping motor can be controlled according to the first temperature and the second temperature, so that the air conditioner can self-adjust to a better operating state, which is beneficial to improving the energy efficiency of the air conditioner.

[0058] It is understandable that judging the cooling effect of the condenser by the first temperature, or by judging the cooling effect of the condenser by the first temperature and the second temperature, and then determining whether to turn on the water filling device and water pump motor, i.e. whether to turn on the auxiliary cooling mode, is beneficial to improving the accuracy of air conditioner control, ensuring good cooling capacity of air conditioner, and improving user experience.

[0059] like Figure 3 As shown, in the above-mentioned control method for the air conditioner, step S120 controls the operating state of the water filling device and the water pumping motor according to the first temperature and the second temperature, including but not limited to steps S210 and S220:

[0060] Step S210: When the first temperature is less than the first preset temperature, calculate the subcooling of the condenser based on the first temperature and the second temperature;

[0061] It should be noted that the subcooling of the condenser is the difference between the first temperature and the second temperature, which can accurately reflect the cooling effect of the condenser. The condenser can achieve better cooling effect when it is in the appropriate subcooling range under different operating conditions.

[0062] Step S220: Control the working status of the water supply device and the water pumping motor according to the subcooling degree.

[0063] If the first temperature is less than the first preset temperature, it means that the first temperature is within the allowable range, that is, the subcooling temperature of the condenser is within the allowable range. By further calculating the subcooling of the condenser, the cooling effect of the condenser can be judged more accurately. Controlling the working status of the water supply device and the water pump motor according to the subcooling is beneficial to improving the accuracy of air conditioner control.

[0064] It is understandable that this embodiment controls the working status of the water filling device and the water pumping motor based on the first temperature and the second temperature. It collects fewer parameters and the judgment logic is relatively simple and reliable. By judging the heat exchange quality on the condenser side, it can more accurately predict whether the water filling device and the water pumping motor need to be turned on, so that the air conditioner can adjust itself to a better operating state and ensure the good working effect of the air conditioner.

[0065] In the above-mentioned control method for the air conditioner, step S220, which controls the operating state of the water supply device and the water pumping motor based on the subcooling degree, includes:

[0066] When the subcooling is less than or equal to the second preset temperature, the water supply device and water pump motor are turned on.

[0067] It should be noted that if the first temperature is lower than the first preset temperature and the subcooling is less than or equal to the second preset temperature, it indicates that the condenser subcooling is insufficient. Although the first temperature is within the allowable range, the low subcooling will affect the cooling effect of the condenser and thus affect the overall cooling capacity. In this case, it is necessary to turn on the water adding device and the water pump motor, that is, to turn on the auxiliary cooling mode to improve the heat exchange efficiency on the condenser side and thus ensure that the cooling capacity meets the requirements.

[0068] If the first temperature is lower than the first preset temperature and the subcooling is greater than the second preset temperature, it indicates that the current operating state can ensure good heat dissipation of the condenser and can ensure that the cooling output meets the requirements without turning on the auxiliary cooling mode. In this case, the condenser maintains the current operating state, without the need to turn on the water filling device and water pump motor, which can reduce water consumption and reduce the power consumption of the whole unit. At the same time, the compressor in the air conditioner increases the frequency to the target frequency in normal mode.

[0069] In the above-mentioned control method for the air conditioner, step S120, which controls the operating state of the water filling device and the water pumping motor according to the first temperature, includes:

[0070] When the first temperature is greater than or equal to the first preset temperature and less than or equal to the third preset temperature, the water supply device and the water pumping motor are turned on.

[0071] It should be noted that if the first temperature is greater than or equal to the first preset temperature, it indicates that the condenser's intermediate temperature is too high, which affects the condenser's cooling effect. It is necessary to turn on the water filling device and water pump motor to increase the condenser's cooling effect. At the same time, it is necessary to ensure that the first temperature is less than or equal to the third preset temperature, which is the upper limit protection temperature.

[0072] In the above-mentioned control method for the air conditioner, when the water filling device and the water pump motor are turned on, the compressor in the air conditioner is controlled to run continuously at a preset frequency for a first preset time, and then the operating frequency of the compressor is adjusted to the target frequency.

[0073] When the water filling device and water pumping motor need to be turned on, the compressor maintains a preset frequency and runs continuously for a first preset time. During this time, water is stored and pumped for cooling. After running for the first preset time, the compressor's operating frequency is adjusted to the target frequency. This avoids the compressor increasing its frequency when the water supply is insufficient, which would cause the overall temperature and pressure of the unit to rise. This helps to ensure the reliability of the air conditioner.

[0074] It should be noted that the preset frequency is usually a low frequency, which can ensure that the compressor is in a safe and reliable operating state.

[0075] Specifically, if the first temperature is lower than the first preset temperature and the subcooling is less than or equal to the second preset temperature, the water adding device starts to add water, and the water pumping motor starts to pump water for cooling. The compressor runs at the first preset frequency FR1 for a first duration t1, and then the operating frequency is adjusted to the target frequency. If the first temperature is greater than or equal to the first preset temperature and less than or equal to the third preset temperature, the water adding device and the water pumping motor start, and the compressor runs at the second preset frequency FR2 for a second duration t2, and then the operating frequency is adjusted to the target frequency FR2. S It should be noted that the first preset frequency FR1 and the second preset frequency FR2 may be different. For example, the first preset frequency can be obtained based on a pre-set correspondence between the first temperature and the subcooling, and the second preset frequency can be obtained based on a pre-set correspondence between the first temperature and the subcooling. Furthermore, the first duration t1 and the second duration t2 are the first preset durations for the compressor to operate at different preset frequencies. The first duration t1 and the second duration t2 may be the same or different.

[0076] It should be noted that the target frequency can be calculated or obtained from the temperature setpoint and the operating parameters of the air conditioner, and can be a range value. This embodiment of the invention does not impose specific limitations.

[0077] like Figure 4 As shown, the control method for the air conditioner described above also includes, but is not limited to, steps S310 and S320:

[0078] Step S310: Obtain the condenser inlet air temperature;

[0079] It should be noted that the condenser's inlet air temperature generally refers to the outdoor ambient temperature, which reflects the condenser's operating conditions.

[0080] Step S320: When the air inlet temperature is greater than the fourth preset temperature, control the water filling device and the water pumping motor to start; when the air inlet temperature is less than or equal to the fourth preset temperature, control the working state of the water filling device and the water pumping motor according to the first temperature or according to the first temperature and the second temperature.

[0081] The intake air temperature can be used to determine if the condenser is operating at a high temperature, thus indicating whether enhanced heat exchange on the condenser side is needed. The operation of the water filling device and pump motor is controlled based on the intake air temperature, allowing the air conditioner to automatically adjust to an optimal operating state, which helps improve the air conditioner's energy efficiency. By comparing the intake air temperature with a fourth preset temperature, if the intake air temperature is greater than the fourth preset temperature, it indicates that the outdoor temperature is high, requiring a large cooling capacity. Simple air cooling is insufficient to meet the condenser's heat exchange needs. In this case, the water filling device and pump motor are activated to enhance the condenser's heat exchange efficiency and increase cooling output. If the intake air temperature is less than or equal to the fourth preset temperature, the operation of the water filling device and pump motor is controlled based on either the first temperature or the second temperature.

[0082] It should be noted that if the air intake temperature is less than or equal to the fourth preset temperature, it means that the outdoor ambient temperature is low. At this time, the cooling effect of the outdoor air is relatively good, and the water filling device and water pump motor can be temporarily not turned on, which can reduce water consumption and reduce the power consumption of the whole machine.

[0083] In the above-mentioned control method for air conditioners, when the first temperature is greater than the third preset temperature, the operating frequency of the compressor in the air conditioner is limited.

[0084] It should be noted that the third preset temperature is the upper limit protection temperature. If the first temperature is greater than the third preset temperature, it means that the first temperature and condensing pressure have exceeded the upper limit. Even if the water filling device and water pump motor are running at full capacity, the cooling effect of the condenser still cannot meet the current system requirements. Therefore, the operating frequency of the compressor is limited, and the compressor operates at the preset limit frequency, which helps to ensure the reliability of the air conditioner.

[0085] By using the first temperature to determine whether frequency limiting is needed, the system ensures that even if the water supply device and water pump motor are not working properly and the cooling effect of the prototype does not meet the actual requirements, the whole machine is still in a safe operating state. When the compressor frequency is limited to the preset limit frequency, a "high temperature frequency limiting" code is reported.

[0086] In the control method of the above-mentioned air conditioner, after the compressor runs continuously at the target frequency for a second preset time, the first temperature and the second temperature are obtained again.

[0087] It should be noted that after the compressor's operating frequency is adjusted to the target frequency, the compressor is controlled to run continuously at the target frequency for a second preset time to ensure the stable and reliable operation of the air conditioner. After the compressor runs for the second preset time, the first and second temperatures are obtained again, and the working status of the water filling device and the water pump motor is controlled again based on the new first and second temperatures. This allows for real-time adjustment of the air conditioner's auxiliary cooling mode, which helps to improve the flexibility and accuracy of air conditioner control, thereby improving the air conditioner's energy efficiency.

[0088] In the above-mentioned control method for air conditioners, before obtaining the first temperature of the refrigerant at the middle of the condenser and the second temperature of the refrigerant at the condenser outlet, the compressor is controlled to run continuously at the initial frequency for a third preset time, allowing the air conditioner to operate stably for a period of time before detecting the first and second temperatures. This can improve the accuracy of data acquisition, thereby helping to improve the precision of air conditioner control.

[0089] To more clearly illustrate the control method of the air conditioner of the present invention, an overall embodiment will be used for further description below.

[0090] like Figure 5 As shown, the control method of the air conditioner of the present invention is as follows:

[0091] 1. Power on;

[0092] 2. Select cooling mode to start the cooling system; turn on the air conditioner and select cooling mode as the operating mode.

[0093] 3. The compressor's initial frequency is set to FR0, and the running time is t0;

[0094] 4. Read the condenser inlet air temperature T4, the first refrigerant temperature T3 at the middle of the condenser, and the second refrigerant temperature T at the condenser outlet. O ;

[0095] 5. Compare the values ​​of T4 and C1; where C1 is the fourth preset temperature. If T4 > C1, the outdoor temperature is high, the water filling device is activated, water is added, and the water pump motor is activated to meet the heat exchange requirements of the condenser side. Proceed to step 6. If T4 ≤ C1, it means that the outdoor ambient temperature is low, and the water filling device and water pump motor can be temporarily not turned on. Proceed to step 6.

[0096] 6. Compare the magnitudes of T3 and C2; where C2 is the third preset temperature. If T3 > C2, at this time the first temperature and the condensation pressure have reached the upper limit, and step 7 is executed; if T3 ≤ C2, step 8 is executed.

[0097] 7. Limit the frequency of the compressor, and the preset limit frequency is FR L , and at the same time report the "high temperature frequency limit" code.

[0098] 8. Compare the magnitudes of T3 and C3; where C3 is the first preset temperature. If T3 < C3, calculate the degree of subcooling of the condenser, where the degree of subcooling is T3 - T O , and step 9 is executed; if T3 ≥ C3, step 12 is executed.

[0099] 9. Compare T3 - T O with C4; where C4 is the second preset temperature. If T3 - T O > C4, it means that the current operating state can ensure good heat dissipation of the condenser, and step 10 is executed; if T3 - T O ≤ C4, step 11 is executed.

[0100] 10. The compressor increases the frequency to the target frequency FR in the normal mode S , and then runs for t3 time, and returns to step 4.

[0101] 11. The water addition device is started to start adding water, and the water pumping motor is started; although the first temperature is within the allowable range, the degree of subcooling of the condenser is too low, affecting the refrigerating capacity of the whole machine. At this time, the water addition device and the water pumping motor need to be started to ensure a certain degree of subcooling of the cold output, so as to ensure the refrigerating capacity; at the same time, after the compressor runs at FR1 for t1 time, the operating frequency is adjusted to the target frequency FR S , and then runs for t3 time, and returns to step 4.

[0102] 12. The water addition device is started to start adding water, and the water pumping motor is started; by starting the water addition device and the water pumping motor to increase the cooling effect of the condenser; at the same time, after the compressor runs at FR2 for t2 time, the operating frequency is adjusted to the target frequency FR S , and then runs for t3 time, and returns to step 4.

[0103] As Figure 6 shown, an embodiment of the second aspect of the present invention provides an operation control device 600, including at least one control processor 610 and a memory 620 for communicating with at least one control processor 610; the control processor 610 and the memory 620 can be connected through a bus or other means, Figure 6The diagram illustrates an example of a bus connection. Memory 620 stores instructions executable by at least one control processor 610. These instructions, when executed by the control processor 610, enable the control processor 610 to perform the air conditioner control method described in the first aspect embodiment above, for example, to execute the above-described... Figure 2 Method steps S110 and S120 in the text Figure 3 Method steps S210 and S220 in the text Figure 4 Method steps S310 and S320, and Figure 5 The method and steps are as follows: When the air conditioner is turned on, by obtaining the first temperature of the refrigerant in the middle of the condenser and the second temperature of the refrigerant at the outlet, the cooling effect of the condenser can be judged more accurately. Then, the working status of the water filling device and the water pump motor can be controlled according to the first temperature, or according to the first and second temperatures, so that the air conditioner can self-adjust to a better operating state, which is conducive to improving the energy efficiency of the air conditioner.

[0104] A third aspect of the present invention provides an air conditioner including the operation control device described in the second aspect embodiment above. When the air conditioner of this embodiment is in the on state, by acquiring a first temperature of the refrigerant at the middle of the condenser and a second temperature of the refrigerant at the outlet, the cooling effect of the condenser can be more accurately determined. Furthermore, the operating state of the water filling device and the water pump motor can be controlled based on the first temperature, or based on the first and second temperatures, enabling the air conditioner to self-adjust to a more optimal operating state, which is beneficial for improving the energy efficiency of the air conditioner.

[0105] A fourth aspect of the present invention provides a computer-readable storage medium storing computer-executable instructions that can be used to cause a computer to perform the control method of an air conditioner as described in the first aspect embodiment above, for example, to perform the above-described... Figure 2 Method steps S110 and S120 in the text Figure 3 Method steps S210 and S220 in the text Figure 4 Method steps S310 and S320, and Figure 5 The method and steps are as follows: When the air conditioner is turned on, by obtaining the first temperature of the refrigerant in the middle of the condenser and the second temperature of the refrigerant at the outlet, the cooling effect of the condenser can be judged more accurately. Then, the working status of the water filling device and the water pump motor can be controlled according to the first temperature, or according to the first and second temperatures, so that the air conditioner can self-adjust to a better operating state, which is conducive to improving the energy efficiency of the air conditioner.

[0106] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which may include computer storage media or non-transitory media and communication media or transient media. As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc DVD or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0107] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A control method of an air conditioner, characterized by, The air conditioner is provided with a condenser, a water hitting motor for assisting the condenser in cooling, and a water adding device for providing a water source, and the control method comprises: obtaining a first temperature of refrigerant at a middle part of the condenser and a second temperature of refrigerant at an outlet of the condenser; controlling working states of the water adding device and the water hitting motor according to the first temperature, or controlling working states of the water adding device and the water hitting motor according to the first temperature and the second temperature; wherein the controlling working states of the water adding device and the water hitting motor according to the first temperature comprises: when the first temperature is greater than or equal to a first preset temperature and less than or equal to a third preset temperature, controlling the water adding device and the water hitting motor to be turned on; in addition, the controlling working states of the water adding device and the water hitting motor according to the first temperature and the second temperature comprises: when the first temperature is less than the first preset temperature, calculating a supercooling degree of the condenser according to the first temperature and the second temperature; and controlling working states of the water adding device and the water hitting motor according to the supercooling degree; in addition, the control method further comprises: when the first temperature is greater than the third preset temperature, limiting a running frequency of a compressor in the air conditioner.

2. The control method of the air conditioner according to claim 1, characterized by, the controlling working states of the water adding device and the water hitting motor according to the supercooling degree comprises: when the supercooling degree is less than or equal to a second preset temperature, controlling the water adding device and the water hitting motor to be turned on.

3. The control method of an air conditioner according to claim 1 or 2, characterized by, in the case that the water adding device and the water hitting motor are turned on, controlling the compressor in the air conditioner to continuously run at a preset frequency for a first preset time length, and then adjusting the running frequency of the compressor to a target frequency.

4. The control method of the air conditioner according to claim 1, characterized by, further comprising: obtaining an inlet air temperature of the condenser; when the inlet air temperature is greater than a fourth preset temperature, controlling the water adding device and the water hitting motor to be started; in the case that the inlet air temperature is less than or equal to the fourth preset temperature, controlling working states of the water adding device and the water hitting motor according to the first temperature or controlling working states of the water adding device and the water hitting motor according to the first temperature and the second temperature.

5. The control method of the air conditioner according to claim 3, wherein after the compressor continuously runs at the target frequency for a second preset time length, the first temperature and the second temperature are obtained again.

6. A running control device characterized by comprising: comprising at least one control processor and a memory connected in communication with the at least one control processor; the memory stores instructions executable by the at least one control processor, and the instructions are executed by the at least one control processor to enable the at least one control processor to perform the control method according to any one of claims 1 to 5.

7. An air conditioner characterized by comprising: comprising the operation control device according to claim 6.

8. A computer-readable storage medium, characterized in that, the computer readable storage medium stores computer executable instructions for causing a computer to execute the control method according to any one of claims 1 to 5.

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