Air conditioner and control method and device thereof, storage medium and computer program product

Abstract

The invention provides an air conditioner, a control method and device of the air conditioner, a storage medium and a computer program product, and the method comprises the steps that when the starting operation duration of the air conditioner reaches the first operation duration, the first temperature of a power module of a motor of an indoor fan of the air conditioner is obtained; when the starting operation duration of the air conditioner reaches the preset duration, the second temperature of a power module of a motor of an indoor fan of the air conditioner is obtained; the first operation duration is smaller than the preset duration; whether the temperature difference value between the second temperature and the first temperature is larger than or equal to a preset temperature difference threshold value or not is judged; and if it is judged that the temperature difference value is larger than or equal to the preset temperature difference threshold value, the operation frequency control over the air conditioner and / or the rotation speed control over an indoor fan and / or the opening degree control over a throttling device are / is executed. According to the scheme, the influence of condensation water on the air conditioner performance can be reduced, and the performance of the air conditioner system is improved.

Description

Technical Field

[0001] The present invention relates to the field of control, and in particular to an air conditioner and a control method, device, storage medium and computer program product thereof. Background Art

[0002] When using the kitchen in the summer, heat and water vapor are generated during the cooking process, creating a high temperature and high humidity environment in the kitchen. When using the air conditioner in this situation, a large amount of condensation will form on the heat exchanger of the indoor unit of the air conditioner. The condensation will adhere to the fins of the heat exchanger, reducing the gap for air to pass through the fins, thereby affecting the air volume and heat exchange, and affecting the performance of the air conditioner. Summary of the invention

[0003] The main purpose of the present invention is to overcome the defects of the above-mentioned related technologies and to provide an air conditioner and its control method, device, storage medium and computer program product to solve the problem in the related technology that heat and water vapor are generated during the cooking process, resulting in a large amount of condensation water forming on the indoor unit heat exchanger when the air conditioner is used in the kitchen.

[0004] On one hand, the present invention provides a method for controlling an air conditioner, comprising: when the operating time of the air conditioner reaches a first operating time, obtaining a first temperature of a power module of a motor of an indoor fan of the air conditioner; when the operating time of the air conditioner reaches a preset time, obtaining a second temperature of the power module of the motor of the indoor fan of the air conditioner; the first operating time is less than the preset time; determining whether the temperature difference between the second temperature and the first temperature is greater than or equal to a preset temperature difference threshold; if it is determined that the temperature difference is greater than or equal to the preset temperature difference threshold, executing operating frequency control of the air conditioner and / or indoor fan speed control and / or throttling device opening control.

[0005] Optionally, the operating frequency control of the air conditioner and / or the indoor fan speed control and / or the throttling device opening control are executed, including: executing the operating frequency control of the air conditioner according to the current indoor heat exchanger coil temperature; executing the operating speed control of the indoor fan according to the current indoor fan operating speed; and executing the throttling device opening control according to the executed operating frequency control of the air conditioner.

[0006] Optionally, according to the current indoor heat exchanger coil temperature, the operating frequency control of the air conditioner is performed, including: according to the current indoor heat exchanger coil temperature, controlling the operating frequency of the air conditioner to decrease; wherein, the higher the current indoor heat exchanger coil temperature, the greater the reduced frequency value; if the current indoor unit heat exchanger coil temperature is less than the first preset indoor heat exchanger coil temperature, controlling the operating frequency of the air conditioner to decrease by the first preset frequency value on the basis of the current operating frequency; if the current indoor heat exchanger coil temperature is greater than or equal to the first preset indoor heat exchanger coil temperature and less than or equal to the second preset indoor heat exchanger coil temperature, controlling the operating frequency of the air conditioner to decrease by the second preset frequency value on the basis of the current operating frequency; if the current indoor unit heat exchanger coil temperature is greater than the second preset indoor heat exchanger coil temperature, controlling the operating frequency of the air conditioner to decrease by the third preset frequency value on the basis of the current operating frequency.

[0007] Optionally, according to the executed operating frequency control of the air conditioner, the throttling device opening control is executed, including: according to the operating frequency reduction value of the air conditioner, controlling the throttling device opening to decrease; wherein, the greater the frequency value of the operating frequency reduction of the air conditioner, the greater the opening reduction value of the throttling device; when the operating frequency of the air conditioner is controlled to be reduced by a first preset frequency value on the basis of the current operating frequency, the opening of the throttling device is reduced by a first preset opening value on the basis of the current opening value; when the operating frequency of the air conditioner is controlled to be reduced by a second preset frequency value on the basis of the current operating frequency, the opening of the throttling device is reduced by a second preset opening value on the basis of the current opening value; when the operating frequency of the air conditioner is controlled to be reduced by a third preset frequency value on the basis of the current operating frequency, the opening of the throttling device is reduced by a third preset opening value on the basis of the current opening value; wherein the first preset opening value is less than the second preset opening value, and the second preset opening value is less than the third preset opening value.

[0008] Optionally, according to the current operating speed of the indoor fan, the operating speed control of the indoor fan is performed, including: according to the current operating speed of the indoor fan, controlling the operating speed of the indoor fan to increase; wherein, the higher the current operating speed of the indoor fan, the smaller the increased speed value; the operating speed of the indoor fan includes: high speed, medium speed and low speed; if the current operating speed of the indoor fan is high speed, then the first preset speed value is increased based on the current operating speed; if the current operating speed of the indoor fan is medium speed, then the second preset speed value is increased based on the current operating speed; if the current operating speed of the indoor fan is low speed, then the third preset speed value is increased based on the current operating speed; wherein the first preset speed value is less than the second preset speed value, and the second preset speed value is less than the third preset speed value.

[0009] Optionally, it also includes: after executing the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner, operating for a second operating time according to the current operating frequency and / or indoor fan speed and / or throttling device opening; after running for a second operating time according to the current operating frequency and / or indoor fan speed and / or throttling device opening, operating according to the operating frequency and / or indoor fan speed and / or throttling device opening before executing the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner.

[0010] On the other hand, the present invention provides a control device for an air conditioner, comprising: an acquisition unit, used to acquire a first temperature of a power module of a motor of an indoor fan of the air conditioner when the air conditioner is turned on and running for a first time, and to acquire a second temperature of the power module of the motor of the indoor fan of the air conditioner when the air conditioner is turned on and running for a preset time, and the first time of operation is less than the preset time; a judgment unit, used to judge whether the temperature difference between the second temperature acquired by the acquisition unit and the first temperature is greater than or equal to a preset temperature difference threshold; an execution unit, used to execute the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner if the judgment unit judges that the temperature difference is greater than or equal to the preset temperature difference threshold.

[0011] Optionally, the execution unit executes the operating frequency control of the air conditioner and / or the indoor fan speed control and / or the throttling device opening control, including: executing the operating frequency control of the air conditioner according to the current indoor heat exchanger coil temperature; executing the operating speed control of the indoor fan according to the current indoor fan operating speed; and executing the throttling device opening control according to the executed operating frequency control of the air conditioner.

[0012] Optionally, the execution unit executes the operating frequency control of the air conditioner according to the current indoor heat exchanger coil temperature, including: controlling the operating frequency of the air conditioner to decrease according to the current indoor heat exchanger coil temperature; wherein, the higher the current indoor heat exchanger coil temperature, the greater the reduced frequency value; if the current indoor unit heat exchanger coil temperature is less than the first preset indoor heat exchanger coil temperature, controlling the operating frequency of the air conditioner to decrease by the first preset frequency value on the basis of the current operating frequency; if the current indoor heat exchanger coil temperature is greater than or equal to the first preset indoor heat exchanger coil temperature and less than or equal to the second preset indoor heat exchanger coil temperature, controlling the operating frequency of the air conditioner to decrease by the second preset frequency value on the basis of the current operating frequency; if the current indoor unit heat exchanger coil temperature is greater than the second preset indoor heat exchanger coil temperature, controlling the operating frequency of the air conditioner to decrease by the third preset frequency value on the basis of the current operating frequency.

[0013] Optionally, the execution unit executes throttling device opening control according to the executed operating frequency control of the air conditioner, including: controlling the throttling device opening to decrease according to the operating frequency reduction value of the air conditioner; wherein, the greater the frequency value of the operating frequency reduction of the air conditioner, the greater the opening reduction value of the throttling device; when the operating frequency of the air conditioner is controlled to be reduced by a first preset frequency value on the basis of the current operating frequency, the opening of the throttling device is reduced by a first preset opening value on the basis of the current opening value; when the operating frequency of the air conditioner is controlled to be reduced by a second preset frequency value on the basis of the current operating frequency, the opening of the throttling device is reduced by a second preset opening value on the basis of the current opening value; when the operating frequency of the air conditioner is controlled to be reduced by a third preset frequency value on the basis of the current operating frequency, the opening of the throttling device is reduced by a third preset opening value on the basis of the current opening value; wherein, the first preset opening value is less than the second preset opening value, and the second preset opening value is less than the third preset opening value.

[0014] Optionally, the execution unit executes the operating speed control of the indoor fan according to the current operating speed of the indoor fan, including: controlling the operating speed of the indoor fan to increase according to the current operating speed of the indoor fan; wherein, the higher the current operating speed of the indoor fan, the smaller the increased speed value; the operating speed of the indoor fan includes: high speed, medium speed and low speed; if the current operating speed of the indoor fan is high speed, then the first preset speed value is increased based on the current operating speed; if the current operating speed of the indoor fan is medium speed, then the second preset speed value is increased based on the current operating speed; if the current operating speed of the indoor fan is low speed, then the third preset speed value is increased based on the current operating speed; wherein the first preset speed value is less than the second preset speed value, and the second preset speed value is less than the third preset speed value.

[0015] Optionally, the execution unit is also used to: after executing the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner, operate for a second operating time according to the current operating frequency and / or indoor fan speed and / or throttling device opening; after running for a second operating time according to the current operating frequency and / or indoor fan speed and / or throttling device opening, operate according to the operating frequency and / or indoor fan speed and / or throttling device opening before executing the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner.

[0016] Another aspect of the present invention provides a storage medium having a computer program stored thereon, wherein the program implements the steps of any of the aforementioned methods when executed by a processor.

[0017] In another aspect, the present invention provides an air conditioner, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the aforementioned methods when executing the program.

[0018] In another aspect, the present invention provides an air conditioner, comprising any of the aforementioned control devices.

[0019] In yet another aspect, the present invention provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the steps of any of the aforementioned methods are implemented.

[0020] According to the technical solution of the present invention, the frequency, indoor fan speed and throttling device opening are adjusted and controlled according to the temperature change of the indoor unit fan blade motor IPM, thereby reducing condensation water, increasing air volume, reducing the impact of condensation water on air-conditioning performance, and improving the performance of the air-conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 is a method schematic diagram of an embodiment of the air conditioner control method provided by the present invention;

[0023] Figure 2 A flow chart showing a specific implementation of the steps of executing the operating frequency control and / or the indoor fan speed control and / or the throttling device opening control of the air conditioner according to the present invention;

[0024] Figure 3a A control logic diagram for executing the operating frequency control of the air conditioner according to a specific embodiment of the present invention is shown;

[0025] Figure 3b A control logic diagram for executing indoor fan operating speed control according to a specific embodiment of the present invention is shown;

[0026] Figure 3c A control logic diagram for executing throttling device opening control according to a specific embodiment of the present invention is shown;

[0027] Figure 4 is a method schematic diagram of a specific embodiment of the air conditioner control method provided by the present invention;

[0028] Figure 5 It is a structural block diagram of an embodiment of the air conditioner control device provided by the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] When the user turns on the air conditioner in the kitchen, the humidity of the kitchen environment is high and the water content in the air is high. During cooling, the evaporation temperature of the refrigerant in the indoor unit heat exchanger is lower than the dew point temperature of the water vapor in the air. Therefore, after the air conditioner is turned on, condensation water will be generated on the fins of the indoor unit heat exchanger. The condensation water will form resistance to the flow of air flow, and further affect the load of the indoor fan motor, causing the temperature of the power module (IPM, Intelligent Power Module) of the motor to change. Therefore, the present invention controls the compressor frequency, indoor fan speed, and electronic expansion valve opening according to the change of the motor IPM temperature.

[0032] The present invention provides a method for controlling an air conditioner, which may be a kitchen air conditioner. Figure 1 It is a method schematic diagram of an embodiment of the air conditioner control method provided by the present invention.

[0033] like Figure 1 As shown, according to one embodiment of the present invention, the control method at least includes step S110, step S120, step S130 and step S140.

[0034] Step S110, when the operating time of the air conditioner reaches a first operating time t1, a first temperature of a power module of a motor of an indoor fan of the air conditioner is obtained.

[0035] Specifically, the power module (IPM) temperature T of the motor of the indoor fan when the air conditioner is turned on and running for the first running time is obtained. IPM1 .

[0036] Step S120, when the air conditioner is turned on and running for a predetermined time t 预设1 When the second temperature of the power module of the motor of the indoor fan of the air conditioner is obtained.

[0037] Specifically, get the boot running time t 开机1 , calculate the difference between the startup running time and the preset time, that is, t 开机 -t 预设1 , if t 开机 -t 预设1 <0, continue to run with the current parameters. 开机 -t 预设1 =0, get the IPM temperature T of the indoor fan motor (indoor fan) at this time IPM2 The first running time is shorter than the preset time, that is, t1<t 预设1 , because it is necessary to first obtain the IPM temperature of an indoor fan motor that has been turned on for a short time, and then turn it on for a period of time, that is, turn on t 预设1 The IPM temperature value of the indoor fan blade motor after time t is compared with the value at time t1 to obtain the IPM temperature change amplitude of the indoor fan blade motor.

[0038] Step S130, determining whether the temperature difference between the second temperature and the first temperature is greater than or equal to a preset temperature difference threshold.

[0039] Step S140: If it is determined that the temperature difference is greater than or equal to the preset temperature difference threshold, the operating frequency control of the air conditioner and / or the indoor fan speed control and / or the throttling device opening control are executed.

[0040] Specifically, the second temperature T is calculated IPM2 With the first temperature T IPM1 The temperature difference between the two is determined to determine whether the temperature difference between the two is greater than or equal to the preset temperature difference threshold ΔT 电机 , if T IPM2 -T IPM1 <ΔT IPM1 , then continue to run with the current parameters. If T IPM2 -T IPM1 ≥ΔT IPM1 , then the operating frequency control and / or indoor fan speed control and / or throttling device opening control are executed.

[0041] If the second temperature T IPM2 With the first temperature T IPM1 The temperature difference exceeds the preset temperature difference threshold ΔTIPM1 That is, T IPM2 -T IPM1 ≥ΔT IPM1 , indicating that the temperature of the indoor fan motor IPM varies greatly and the load of the motor increases. At this time, there is condensation water on the fins of the indoor unit heat exchanger, which affects the air volume. Then, the operating frequency control and / or indoor fan speed control and / or throttling device opening control are executed.

[0042] Figure 2 The flowchart of a specific embodiment of the present invention is a flowchart of the steps of controlling the operating frequency of the air conditioner and / or the speed of the indoor fan and / or the opening degree of the throttling device. Figure 2 As shown, in a specific implementation, step S140 includes: step S141, step S142 and step S143.

[0043] Step S141, executing the operating frequency control of the air conditioner according to the current indoor heat exchanger coil temperature.

[0044] Specifically, according to the current indoor heat exchanger coil temperature, the operating frequency of the air conditioner is controlled to be reduced; wherein, the higher the current indoor heat exchanger coil temperature, the greater the reduced frequency value.

[0045] In a specific implementation, if the current indoor unit heat exchanger coil temperature T 内管 Less than the first preset indoor heat exchanger coil temperature T 内管1 , the operating frequency of the air conditioner is controlled to be reduced by a first preset frequency value ΔF1 based on the current operating frequency F; if the current indoor heat exchanger coil temperature T 内管 Greater than or equal to the first preset indoor heat exchanger coil temperature T 内管1 and is less than or equal to the second preset indoor heat exchanger coil temperature T 内管2 , the operating frequency of the air conditioner is controlled to be reduced by a second preset frequency value ΔF2 based on the current operating frequency F; if the current indoor unit heat exchanger coil temperature T 内管 Greater than the second preset indoor heat exchanger coil temperature T 内管2 , the operating frequency of the air conditioner is controlled to be reduced by a third preset frequency value ΔF3 based on the current operating frequency F.

[0046] Table 1

[0047]

[0048] The above specific implementation can also refer to Table 1, which shows the corresponding relationship between the indoor heat exchanger coil temperature and the adjusted operating frequency when the operating frequency is controlled. As shown in Table 1, F is the current operating frequency of the air conditioner compressor, T 内管is the indoor heat exchanger coil temperature, the first preset indoor heat exchanger coil temperature is T 内管1 , the second preset indoor heat exchanger coil temperature is T 内管2 , T 内管1 <T 内管2 .

[0049] Figure 3a FIG. 1 shows a control logic diagram for executing the operating frequency control of the air conditioner according to a specific embodiment of the present invention. Figure 3a As shown, the frequency control is performed according to the current indoor heat exchanger coil temperature. If the indoor unit heat exchanger coil temperature T 内管 <T 内管1 , the operating frequency is reduced by ΔF1 based on the current operating frequency; if the indoor heat exchanger coil temperature T 内管1 ≤T 内管 ≤T 内管2 , the operating frequency is reduced by ΔF2 based on the current operating frequency; if the indoor unit heat exchanger coil temperature T 内管 >T 内管2 , the operating frequency is reduced by ΔF3 based on the current operating frequency; ΔF1>ΔF2>ΔF3.

[0050] Reduce the operating frequency according to the temperature of the indoor unit heat exchanger coil. On the basis of ensuring the cooling effect, appropriately reduce the operating frequency to increase the evaporation temperature of the refrigerant in the indoor unit heat exchanger, thereby reducing the generation of condensation water.

[0051] Step S142, executing operating speed control of the indoor fan according to the current operating speed of the indoor fan.

[0052] Specifically, according to the current operating speed of the indoor fan, the operating speed of the indoor fan is controlled to be increased; wherein, the higher the current operating speed of the indoor fan, the smaller the increased speed value.

[0053] In a specific embodiment, the operating speed of the indoor fan includes: high speed, medium speed and low speed; if the current operating speed of the indoor fan is high speed, the first preset speed value ΔR1 is increased based on the current operating speed R; if the current operating speed of the indoor fan is medium speed, the second preset speed value ΔR2 is increased based on the current operating speed R; if the current operating speed of the indoor fan is low speed, the third preset speed value ΔR3 is increased based on the current operating speed R; wherein the first preset speed value is less than the second preset speed value, and the second preset speed value is less than the third preset speed value, that is, ΔR1<ΔR2<ΔR3.

[0054] Table 2

[0055]

[0056] The above specific implementation manner may also refer to Table 2, which shows the corresponding relationship between the current operating speed and the adjusted speed when the indoor fan speed is controlled according to a specific implementation manner of the present invention.

[0057] Figure 3b FIG. 2 shows a control logic diagram for executing indoor fan speed control according to a specific embodiment of the present invention. Figure 3b As shown, the indoor fan speed is adjusted according to the current operating speed R. If the current operating speed is at high speed, it is increased by ΔR1 on the basis of the current operating speed; if the current operating speed is at medium speed, it is increased by ΔR2 on the basis of the current operating speed; if the current operating speed is at low speed, it is increased by ΔR3 on the basis of the current operating speed.

[0058] The speed is adjusted differently for different indoor fan operating speeds. When the speed is low, it is greatly increased, and when the speed is high, it is slightly increased. By increasing the speed of the indoor fan, the air volume is increased, thereby reducing the impact of condensation water on the air volume and heat exchange, thereby improving the capacity of the air conditioning system.

[0059] Step S143, executing throttling device opening control according to the executed operating frequency control of the air conditioner.

[0060] Specifically, according to the reduced value of the operating frequency of the air conditioner, the opening of the throttling device is controlled to decrease; that is, according to the degree of frequency adjustment, the opening control of the throttling device (for example, an electronic expansion valve) is performed; wherein, the greater the frequency value of the reduced operating frequency of the air conditioner, the greater the reduction value of the opening of the throttling device.

[0061] In a specific embodiment, when the operating frequency of the air conditioner is controlled to be reduced by a first preset frequency value ΔF1 based on the current operating frequency, the opening of the throttling device is reduced by a first preset opening value ΔP1 based on the current opening value P; when the operating frequency of the air conditioner is controlled to be reduced by a second preset frequency value ΔF2 based on the current operating frequency, the opening of the throttling device is reduced by a second preset opening value ΔP2 based on the current opening value P; when the operating frequency of the air conditioner is controlled to be reduced by a third preset frequency value ΔF3 based on the current operating frequency, the opening of the throttling device is reduced by a third preset opening value ΔP3 based on the current opening value P; wherein the first preset opening value is less than the second preset opening value, and the second preset opening value is less than the third preset opening value, that is, ΔP1>ΔP2>ΔP3.

[0062] Table 3

[0063]

[0064] The above specific implementation can also refer to Table 3. Table 3 shows the corresponding relationship between the current operating frequency and the adjusted operating frequency when the opening degree of the throttling device (electronic expansion valve) is controlled according to a specific implementation of the present invention.

[0065] Figure 3c FIG. 2 shows a control logic diagram for executing throttling device opening control according to a specific embodiment of the present invention. Figure 3c As shown, when the operating frequency is reduced by ΔF1 based on the current operating frequency, the opening of the electronic expansion valve is reduced by ΔP1 based on the current opening value P; when the operating frequency is reduced by ΔF2 based on the current operating frequency, the opening of the electronic expansion valve is reduced by ΔP2 based on the current opening value P; when the operating frequency is reduced by ΔF3 based on the current operating frequency, the opening of the electronic expansion valve is reduced by ΔP3 based on the current opening value P, wherein ΔP1>ΔP2>ΔP3.

[0066] When the operating frequency of the compressor changes, the exhaust temperature of the system will also change accordingly. Therefore, in order to prevent the exhaust temperature from changing too much with the compressor frequency, the opening of the electronic expansion valve is adjusted; when the frequency changes greatly, the opening of the electronic expansion valve changes greatly, and when the frequency changes slightly, the opening of the electronic expansion valve changes little or does not change.

[0067] Furthermore, after executing the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner, the air conditioner is operated for a second operating time according to the current operating frequency and / or indoor fan speed and / or throttling device opening; after operating for a second operating time according to the current operating frequency and / or indoor fan speed and / or throttling device opening, the air conditioner is operated according to the operating frequency and / or indoor fan speed and / or throttling device opening before the operating frequency control and / or indoor fan speed control and / or throttling device opening control are executed.

[0068] After executing the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner, and running for the second operating time t2 (for example, t2min) with the adjusted control parameters (operating frequency and / or indoor fan operating speed and / or throttling device opening), it is considered that the condensation water generation situation has improved, and the frequency, indoor fan speed, and electronic expansion valve opening are adjusted back to the values ​​before the adjustment, that is, the frequency, indoor fan speed, and electronic expansion valve opening are adjusted back to the values ​​before the adjustment.

[0069] Furthermore, after the operating frequency and / or indoor fan operating speed and / or throttling device opening are run for a third operating time before executing the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner, the second temperature of the power module of the motor of the indoor fan of the air conditioner is obtained again, and it is determined whether the temperature difference between the second temperature and the first temperature is greater than or equal to a preset temperature difference threshold; if it is determined that the temperature difference is greater than or equal to the preset temperature difference threshold, the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner are executed.

[0070] In order to clearly illustrate the technical solution of the present invention, the execution process of the air conditioner control method provided by the present invention is described below with reference to a specific embodiment.

[0071] Figure 4 FIG. 1 is a schematic diagram of a specific embodiment of the air conditioning control method provided by the present invention. Figure 4 As shown, the specific control process includes the following steps:

[0072] Step S1, obtain the indoor fan motor IPM temperature T when the machine is turned on and running for t1min IPM1 ;

[0073] Step S2, obtaining the startup running time t 开机1 ;

[0074] Step S3, calculate the startup running time t 开机1 The difference between the preset first duration, i.e. t 开机1 -t 预设1 , if t 开机 -t 预设1 <0, continue to run with the current parameters. 开机 -t 预设1 =0 (that is, when the power-on time reaches the preset time, step S4 is executed;

[0075] Step S4, obtaining the IPM temperature T of the indoor fan motor at this time IPM2 ;

[0076] Step S5, calculate T IPM1 With T IPM2 The difference between IPM2 -T IPM1 <ΔT IPM1 , then continue to run with the current parameters. If T IPM2 -T IPM1 ≥ΔT IPM1 , then execute step S6;

[0077] Step S6: If T IPM2 -T IPM1 ≥ΔTIPM1 , then frequency control and indoor fan speed control are executed;

[0078] Step S7, controlling the opening of the electronic expansion valve according to the frequency adjustment degree;

[0079] Step S8, running for t2 time (for example, t2min) with the adjusted control parameters;

[0080] Step S9, after running for t2 time (for example, t2min) with the adjusted control parameters, the frequency, indoor fan speed, and electronic expansion valve opening are adjusted before running;

[0081] Step S10, running for t3min with current parameters, and then returning to execute step S4.

[0082] The present invention also provides a control device for an air conditioner. The air conditioner may be a kitchen air conditioner. Figure 5 FIG. 1 is a structural block diagram of an embodiment of the air conditioner control device provided by the present invention. Figure 5 As shown, the control device 100 includes: an acquisition unit 110 , a judgment unit 120 and an execution unit 130 .

[0083] The acquisition unit 110 is used to acquire a first temperature of a power module of a motor of an indoor fan of the air conditioner when the air conditioner is turned on and the running time reaches a first running time t1; 预设1 When the second temperature of the power module of the motor of the indoor fan of the air conditioner is obtained; the first operating time is less than the preset time.

[0084] Specifically, the power module (IPM) temperature T of the motor of the indoor fan when the air conditioner is turned on and running for the first running time is obtained. IPM1 . Get the boot time t 开机1 , calculate the difference between the startup running time and the preset time, that is, t 开机 -t 预设1 , if t 开机 -t 预设1 <0, continue to run with the current parameters. 开机 -t 预设1 =0, get the IPM temperature T of the indoor wind (indoor fan) motor at this time IPM2 .

[0085] The first running time is shorter than the preset time, that is, t1<t 预设1 , because it is necessary to first obtain the IPM temperature of an indoor fan motor that has been turned on for a short time, and then turn it on for a period of time, that is, turn on t 预设1The IPM temperature value of the indoor fan blade motor after time t is compared with the value at time t1 to obtain the IPM temperature change amplitude of the indoor fan blade motor.

[0086] The judgment unit 120 is used to judge whether the temperature difference between the second temperature obtained by the acquisition unit and the first temperature is greater than or equal to a preset temperature difference threshold; the execution unit 130 is used to execute the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner if the judgment unit judges that the temperature difference is greater than or equal to the preset temperature difference threshold.

[0087] Specifically, the second temperature T is calculated IPM2 With the first temperature T IPM1 The temperature difference between the two is determined to determine whether the temperature difference between the two is greater than or equal to the preset temperature difference threshold ΔT 电机 , if T IPM2 -T IPM1 <ΔT IPM1 , then continue to run with the current parameters. If T IPM2 -T IPM1 ≥ΔT IPM1 , then the operating frequency control and / or indoor fan speed control and / or throttling device opening control are executed.

[0088] If the second temperature T IPM2 With the first temperature T IPM1 The temperature difference exceeds the preset temperature difference threshold ΔT IPM1 That is, T IPM2 -T IPM1 ≥ΔT IPM1 , indicating that the temperature of the indoor fan motor IPM varies greatly and the load of the motor increases. At this time, there is condensation water on the fins of the indoor unit heat exchanger, which affects the air volume. Then, the operating frequency control and / or indoor fan speed control and / or throttling device opening control are executed.

[0089] In a specific embodiment, the execution unit 130 executes the operating frequency control of the air conditioner and / or the indoor fan speed control and / or the throttling device opening control, including: executing the operating frequency control of the air conditioner according to the current indoor heat exchanger coil temperature; executing the operating speed control of the indoor fan according to the current indoor fan operating speed; and executing the throttling device opening control according to the executed operating frequency control of the air conditioner.

[0090] The execution unit 130 executes the operating frequency control of the air conditioner according to the current indoor heat exchanger coil temperature, including: controlling the operating frequency of the air conditioner to decrease according to the current indoor heat exchanger coil temperature; wherein, the higher the current indoor heat exchanger coil temperature, the greater the reduced frequency value.

[0091] In a specific implementation, if the current indoor unit heat exchanger coil temperature T 内管 Less than the first preset indoor heat exchanger coil temperature T 内管1 , the operating frequency of the air conditioner is controlled to be reduced by a first preset frequency value ΔF1 based on the current operating frequency F; if the current indoor heat exchanger coil temperature T 内管 Greater than or equal to the first preset indoor heat exchanger coil temperature T 内管1 and is less than or equal to the second preset indoor heat exchanger coil temperature T 内管2 , the operating frequency of the air conditioner is controlled to be reduced by a second preset frequency value ΔF2 based on the current operating frequency F; if the current indoor unit heat exchanger coil temperature T 内管 Greater than the second preset indoor heat exchanger coil temperature T 内管2 , the operating frequency of the air conditioner is controlled to be reduced by a third preset frequency value ΔF3 based on the current operating frequency F.

[0092] Table 1

[0093]

[0094] The above specific implementation can also refer to Table 1, which shows the corresponding relationship between the indoor heat exchanger coil temperature and the adjusted operating frequency when the operating frequency is controlled. As shown in Table 1, F is the current operating frequency of the air conditioner compressor, T 内管 is the indoor heat exchanger coil temperature, the first preset indoor heat exchanger coil temperature is T 内管1 , the second preset indoor heat exchanger coil temperature is T 内管2 , T 内管1 <T 内管2 .

[0095] Figure 3a FIG. 1 shows a control logic diagram for executing the operating frequency control of the air conditioner according to a specific embodiment of the present invention. Figure 3a As shown, the frequency control is performed according to the current indoor heat exchanger coil temperature. If the indoor unit heat exchanger coil temperature T 内管 <T 内管1 , the operating frequency is reduced by ΔF1 based on the current operating frequency; if the indoor heat exchanger coil temperature T 内管1 ≤T 内管 ≤T 内管2 , the operating frequency is reduced by ΔF2 based on the current operating frequency; if the indoor unit heat exchanger coil temperature T 内管 >T 内管2 , the operating frequency is reduced by ΔF3 based on the current operating frequency; ΔF1>ΔF2>ΔF3.

[0096] Reduce the operating frequency according to the temperature of the indoor unit heat exchanger coil. On the basis of ensuring the cooling effect, appropriately reduce the operating frequency to increase the evaporation temperature of the refrigerant in the indoor unit heat exchanger, thereby reducing the generation of condensation water.

[0097] The execution unit 130 performs throttling device opening control according to the executed operating frequency control of the air conditioner, including: controlling the throttling device opening to decrease according to the operating frequency reduction value of the air conditioner; wherein, the greater the frequency value of the operating frequency reduction of the air conditioner, the greater the opening reduction value of the throttling device.

[0098] In a specific embodiment, when the operating frequency of the air conditioner is controlled to be reduced by a first preset frequency value ΔF1 based on the current operating frequency, the opening of the throttling device is reduced by a first preset opening value ΔP1 based on the current opening value P; when the operating frequency of the air conditioner is controlled to be reduced by a second preset frequency value ΔF2 based on the current operating frequency, the opening of the throttling device is reduced by a second preset opening value ΔP2 based on the current opening value P; when the operating frequency of the air conditioner is controlled to be reduced by a third preset frequency value ΔF3 based on the current operating frequency, the opening of the throttling device is reduced by a third preset opening value ΔP3 based on the current opening value P; wherein the first preset opening value is less than the second preset opening value, and the second preset opening value is less than the third preset opening value, that is, ΔP1>ΔP2>ΔP3.

[0099] Table 3

[0100]

[0101] The above specific implementation can also refer to Table 3. Table 3 shows the corresponding relationship between the current operating frequency and the adjusted operating frequency when the opening degree of the throttling device (electronic expansion valve) is controlled according to a specific implementation of the present invention.

[0102] Figure 3c FIG. 2 shows a control logic diagram for executing throttling device opening control according to a specific embodiment of the present invention. Figure 3c As shown, when the operating frequency is reduced by ΔF1 based on the current operating frequency, the opening of the electronic expansion valve is reduced by ΔP1 based on the current opening value P; when the operating frequency is reduced by ΔF2 based on the current operating frequency, the opening of the electronic expansion valve is reduced by ΔP2 based on the current opening value P; when the operating frequency is reduced by ΔF3 based on the current operating frequency, the opening of the electronic expansion valve is reduced by ΔP3 based on the current opening value P, wherein ΔP1>ΔP2>ΔP3.

[0103] When the operating frequency of the compressor changes, the exhaust temperature of the system will also change accordingly. Therefore, in order to prevent the exhaust temperature from changing too much with the compressor frequency, the opening of the electronic expansion valve is adjusted; when the frequency changes greatly, the opening of the electronic expansion valve changes greatly, and when the frequency changes slightly, the opening of the electronic expansion valve changes little or does not change.

[0104] The execution unit 130 executes the operating speed control of the indoor fan according to the current operating speed of the indoor fan, including: controlling the operating speed of the indoor fan to increase according to the current operating speed of the indoor fan; wherein, the higher the current operating speed of the indoor fan, the smaller the increased speed value.

[0105] In a specific implementation, the indoor fan operating speed includes: high speed, medium speed and low speed;

[0106] If the current indoor fan operating speed is high speed, the first preset speed value ΔR1 is increased based on the current operating speed R; if the current indoor fan operating speed is medium speed, the second preset speed value ΔR2 is increased based on the current operating speed R; if the current indoor fan operating speed is low speed, the third preset speed value ΔR3 is increased based on the current operating speed R; wherein the first preset speed value is less than the second preset speed value, and the second preset speed value is less than the third preset speed value, that is, ΔR1<ΔR2<ΔR3. The above specific implementation can also refer to Table 2, which shows the corresponding relationship between the current operating speed and the adjusted speed when the indoor fan speed is controlled according to a specific implementation of the present invention.

[0107] Table 2

[0108]

[0109] Figure 3b FIG. 2 shows a control logic diagram for executing indoor fan speed control according to a specific embodiment of the present invention. Figure 3b As shown, the indoor fan speed is adjusted according to the current operating speed R. If the current operating speed is at high speed, it is increased by ΔR1 on the basis of the current operating speed; if the current operating speed is at medium speed, it is increased by ΔR2 on the basis of the current operating speed; if the current operating speed is at low speed, it is increased by ΔR3 on the basis of the current operating speed.

[0110] The speed is adjusted differently for different indoor fan operating speeds. When the speed is low, it is greatly increased, and when the speed is high, it is slightly increased. By increasing the speed of the indoor fan, the air volume is increased, thereby reducing the impact of condensation water on the air volume and heat exchange, thereby improving the capacity of the air conditioning system.

[0111] Optionally, the execution unit 130 is also used to: after executing the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner, operate for a second operating time according to the current operating frequency and / or indoor fan speed and / or throttling device opening; after running for a second operating time according to the current operating frequency and / or indoor fan speed and / or throttling device opening, operate according to the operating frequency and / or indoor fan speed and / or throttling device opening before executing the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner.

[0112] After executing the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner, and running for the second operating time t2 (for example, t2min) with the adjusted control parameters (operating frequency and / or indoor fan operating speed and / or throttling device opening), it is considered that the condensation water generation situation has improved, and the frequency, indoor fan speed, and electronic expansion valve opening are adjusted back to the values ​​before the adjustment, that is, the frequency, indoor fan speed, and electronic expansion valve opening are adjusted back to the values ​​before the adjustment.

[0113] Further, after the operating frequency and / or indoor fan speed and / or throttling device opening are run for a third operating time before executing the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner, the acquisition unit 110 acquires the second temperature of the motor of the indoor fan of the air conditioner again, and the judgment unit 120 judges whether the temperature difference between the second temperature and the first temperature is greater than or equal to a preset temperature difference threshold; if the judgment unit 120 judges that the temperature difference is greater than or equal to the preset temperature difference threshold, 130 executes the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner.

[0114] The present invention also provides a storage medium corresponding to the air conditioner control method, on which a computer program is stored, and when the computer program is executed by a processor, the steps of any of the aforementioned methods are implemented.

[0115] The present invention also provides an air conditioner corresponding to the air conditioner control method, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the aforementioned methods when executing the computer program.

[0116] The present invention also provides an air conditioner corresponding to the control device of the air conditioner, comprising any of the control devices described above.

[0117] The present invention also provides a computer program product corresponding to the control method, comprising a computer program, and when the computer program is executed by a processor, the steps of any of the aforementioned methods are implemented.

[0118] Based on this, the solution provided by the present invention adjusts and controls the frequency, indoor fan speed and throttling device opening according to the temperature change of the indoor unit fan blade motor IPM, thereby reducing condensation water, increasing air volume, reducing the impact of condensation water on air conditioning performance, and improving the performance of the air conditioning system.

[0119] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on a computer-readable medium or transmitted via a computer-readable medium. Other examples and implementations are within the scope and spirit of the present invention and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these. In addition, each functional unit may be integrated into a processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit.

[0120] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0121] The units described as separate components may or may not be physically separated, and the components of the control device may or may not be physical units, that is, they may be located in one place or distributed in multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0122] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the relevant technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0123] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that: include: When the air conditioner is turned on and running for a first time, obtaining a first temperature of a power module of a motor of an indoor fan of the air conditioner; When the air conditioner is turned on and running for a preset time, obtaining a second temperature of a power module of a motor of an indoor fan of the air conditioner; The first running time is shorter than the preset time; Determine whether the temperature difference between the second temperature and the first temperature is greater than or equal to a preset temperature difference threshold; If it is determined that the temperature difference is greater than or equal to the preset temperature difference threshold, the operating frequency control of the air conditioner and / or the indoor fan speed control and / or the throttling device opening control are executed.

2. The method according to claim 1, characterized in that Executing the operating frequency control of the air conditioner and / or the indoor fan speed control and / or the throttling device opening control includes: executing operating frequency control of the air conditioner according to the current indoor heat exchanger coil temperature; According to the current running speed of the indoor fan, the running speed of the indoor fan is controlled; According to the operation frequency control of the air conditioner being executed, the throttling device opening degree control is executed.

3. The method according to claim 2, characterized in that According to the current indoor heat exchanger coil temperature, the operating frequency control of the air conditioner is performed, including: According to the current indoor heat exchanger coil temperature, the operating frequency of the air conditioner is controlled to be reduced; wherein, the higher the current indoor heat exchanger coil temperature, the greater the reduced frequency value.

4. The method according to claim 3, characterized in that According to the operation frequency control of the air conditioner being executed, the throttling device opening degree control is executed, including: According to the reduced value of the operating frequency of the air conditioner, the opening of the throttling device is controlled to decrease; wherein, the greater the reduced frequency value of the operating frequency of the air conditioner, the greater the reduced value of the opening of the throttling device.

5. The method according to any one of claims 2 to 4, characterized in that: According to the current running speed of the indoor fan, the running speed control of the indoor fan is performed, including: According to the current running speed of the indoor fan, the running speed of the indoor fan is controlled to be increased; wherein, the higher the current running speed of the indoor fan, the smaller the increased speed value.

6. The method according to any one of claims 1 to 5, characterized in that: Also includes: After executing the operating frequency control and / or the indoor fan speed control and / or the throttling device opening control of the air conditioner, operating for a second operating time according to the current operating frequency and / or the indoor fan speed and / or the throttling device opening; After running for the second running time according to the current operating frequency and / or indoor fan operating speed and / or throttling device opening, the air conditioner is operated according to the operating frequency and / or indoor fan operating speed and / or throttling device opening before executing the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner.

7. A control device for an air conditioner, characterized in that: include: an acquisition unit, configured to acquire a first temperature of a power module of a motor of an indoor fan of the air conditioner when the air conditioner is turned on and operated for a first operation time; When the air conditioner is turned on and running for a preset time, obtaining a second temperature of a power module of a motor of an indoor fan of the air conditioner; the first running time is less than the preset time; a judging unit, configured to judge whether a temperature difference between the second temperature acquired by the acquiring unit and the first temperature is greater than or equal to a preset temperature difference threshold; An execution unit is used to execute the operating frequency control and / or indoor fan speed control and / or throttling device opening control of the air conditioner if the judgment unit judges that the temperature difference is greater than or equal to the preset temperature difference threshold.

8. A storage medium, characterized in that: A computer program is stored thereon, and when the program is executed by a processor, the steps of any method described in claims 1-6 are implemented.

9. An air conditioner, characterized in that: It comprises a processor, a memory and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the method according to any one of claims 1 to 6 are implemented, and the control device according to claim 7 is included.

10. A computer program product, characterized in that The invention comprises a computer program, which implements the steps of any one of the methods of claims 1 to 6 when executed by a processor.

Images