A control method and device of an air conditioner, the air conditioner, a storage medium and a program product

Abstract

The application discloses a kind of air conditioner control method, device, air conditioner, storage medium and program product, the method comprises: when air conditioner is operated in refrigeration mode or dehumidification mode, when indoor environment temperature reaches set temperature, if it is determined to open the function of preventing peculiar smell, according to the tube temperature of indoor heat exchanger, indoor environment temperature control inner fan's wind stop, the angle of air deflector, the operating frequency of compressor.The scheme, by not stopping the compressor to reduce the generation of peculiar smell after reaching temperature point, control the wind stop of inner fan to avoid indoor temperature reduction in the process of preventing peculiar smell, control the angle of air deflector to avoid that user feels residual peculiar smell, improve the comfort of indoor in the process of preventing peculiar smell.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioners, and particularly relates to an air conditioner control method and device, an air conditioner, a storage medium and a computer program product. BACKGROUND

[0002] An air conditioner often produces an odor when switching from a refrigeration mode to a blowing mode, and the odor cannot be eliminated by cleaning the interior of the air conditioner. The reason for the odor is that, after low-temperature refrigeration operation, the hydrophilic aluminum foil surface of the evaporator will accumulate a large amount of condensed water. When the indoor environment temperature reaches the set temperature, the outdoor unit stops working, and the indoor unit switches to the blowing mode. The condensed water on the evaporator continuously volatilizes and diffuses into the air. If the hydrophilic aluminum foil has an odor, the condensed water will carry the odor into the air during the volatilization process.

[0003] To solve the problem of odor during air conditioner refrigeration, a related scheme is to start the inner fan after a period of time after the compressor is started, with the purpose of water hanging on the evaporator. Some other schemes are to lower the set temperature of the air conditioner, thereby prolonging the refrigeration operation time of the air conditioner or even not stopping to ensure water hanging on the evaporator. Some other schemes are to increase the lower limit value of the compressor frequency during refrigeration to ensure water hanging on the evaporator. The above schemes seriously affect the comfort because the refrigeration operation strategy of the air conditioner is adjusted, and the set temperature is adjusted too much to prevent odor.

[0004] The above content is only used to assist in understanding the technical solutions of the present application and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0005] The present application aims to provide an air conditioner control method and device, an air conditioner, a storage medium and a computer program product, to solve the problem that the air conditioner seriously affects comfort during odor removal in related schemes, to reduce the generation of odor by not stopping the compressor after reaching the temperature point, to control the air damper of the inner fan to avoid the indoor temperature from being reduced during odor prevention, to control the angle of the air deflector to avoid the user from feeling the residual odor, to improve the comfort of the indoor during odor prevention, and to ensure a good user experience.

[0006] The application provides a control method of an air conditioner, the air conditioner comprising an indoor fan, a guide vane, a compressor and an indoor heat exchanger; the air conditioner has an odor prevention function; the odor prevention function is used for preventing the indoor unit from generating odor; the method comprises the following steps: when the air conditioner is running in a cooling mode or a dehumidification mode, obtaining an indoor environment temperature and a tube temperature of the indoor heat exchanger; after the indoor environment temperature reaches a set temperature, determining whether to start the odor prevention function; if it is determined to start the odor prevention function, controlling a wind level of the indoor fan, an angle of the guide vane and a running frequency of the compressor according to the tube temperature of the indoor heat exchanger and the indoor environment temperature; and if it is determined not to start the odor prevention function, controlling the compressor to stop running.

[0007] In some embodiments, the control of the wind level of the indoor fan, the angle of the guide vane and the running frequency of the compressor according to the tube temperature of the indoor heat exchanger and the indoor environment temperature comprises: controlling the angle of the guide vane to be a preset angle, the preset angle being an angle at which air outlet of the air conditioner does not blow people; controlling the wind level of the indoor fan according to the indoor environment temperature; and controlling the running frequency of the compressor according to the tube temperature of the indoor heat exchanger.

[0008] In some embodiments, the control of the wind level of the indoor fan according to the indoor environment temperature comprises: reducing the wind level of the indoor fan by one level; determining a temperature change rate of the indoor environment temperature; if the temperature change rate of the indoor environment temperature is greater than a preset temperature change rate, reducing the wind level of the indoor fan by one level; if the wind level of the indoor fan has been the lowest wind level before the wind level of the indoor fan is reduced, controlling the indoor fan to stop rotating; and if the temperature change rate of the indoor environment temperature is less than or equal to the preset temperature change rate, keeping the state of the indoor fan unchanged.

[0009] In some embodiments, the control of the running frequency of the compressor according to the tube temperature of the indoor heat exchanger comprises: determining a relationship between the tube temperature of the indoor heat exchanger and a preset first temperature threshold; if the tube temperature of the indoor heat exchanger is greater than or equal to the preset first temperature threshold, keeping the state of the compressor unchanged; if the tube temperature of the indoor heat exchanger is less than the preset first temperature threshold, reducing the running frequency of the compressor; then determining a relationship between the tube temperature of the indoor heat exchanger and a preset second temperature threshold; the preset second temperature threshold is less than the preset first temperature threshold; if the tube temperature of the indoor heat exchanger is greater than or equal to the preset second temperature threshold, keeping the state of the compressor unchanged; and if the tube temperature of the indoor heat exchanger is less than the preset second temperature threshold, reducing the running frequency of the compressor.

[0010] In some embodiments, the air conditioner further comprises an outdoor fan; and the method further comprises: if the tube temperature of the indoor heat exchanger is less than a preset second temperature threshold, and the operating frequency of the compressor is a preset minimum frequency and the outdoor fan stops rotating, then controlling the compressor to stop.

[0011] In some embodiments, the control unit controls the angle of the air deflector to be a preset angle, the preset angle being an angle at which the air conditioner does not blow air on a person, controls the wind level of the indoor fan according to the indoor environment temperature, and controls the operating frequency of the compressor according to the tube temperature of the indoor heat exchanger.

[0012] In some embodiments, the control unit controls the angle of the air deflector to be a preset angle, the preset angle being an angle at which the air conditioner does not blow air on a person, controls the wind level of the indoor fan according to the indoor environment temperature, and controls the operating frequency of the compressor according to the tube temperature of the indoor heat exchanger.

[0013] In some embodiments, the control unit controls the angle of the air deflector to be a preset angle, the preset angle being an angle at which the air conditioner does not blow air on a person, controls the wind level of the indoor fan according to the indoor environment temperature, and controls the operating frequency of the compressor according to the tube temperature of the indoor heat exchanger.

[0014] In some embodiments, the control unit controls the operating frequency of the compressor based on the pipe temperature of the indoor heat exchanger, including: determining the relationship between the pipe temperature of the indoor heat exchanger and a preset first temperature threshold; if the pipe temperature of the indoor heat exchanger is greater than or equal to the preset first temperature threshold, then keeping the compressor in its current state; if the pipe temperature of the indoor heat exchanger is less than the preset first temperature threshold, then reducing the operating frequency of the compressor; then determining the relationship between the pipe temperature of the indoor heat exchanger and a preset second temperature threshold; the preset second temperature threshold is less than the preset first temperature threshold; if the pipe temperature of the indoor heat exchanger is greater than or equal to the preset second temperature threshold, then keeping the compressor in its current state; if the pipe temperature of the indoor heat exchanger is less than the preset second temperature threshold, then reducing the operating frequency of the compressor.

[0015] In some embodiments, the air conditioner further includes an outdoor fan; the control unit is also configured to control the compressor to stop if the operating frequency of the compressor is a preset minimum frequency and the outdoor fan stops rotating when the pipe temperature of the indoor heat exchanger is less than a preset second temperature threshold.

[0016] In conjunction with the above-described device, the present invention further provides an air conditioner, comprising: the control device for the air conditioner described above.

[0017] In conjunction with the above method, the present invention further provides a storage medium comprising a stored program, wherein, when the program is executed, the device on which the storage medium is located controls the air conditioner control method described above to be performed.

[0018] In conjunction with the above method, the present invention further provides a computer program product comprising a computer program that, when processed and executed, implements the steps of the above-described air conditioner control method.

[0019] The solution of this invention, when the air conditioner is operating in cooling or dehumidification mode, once the indoor ambient temperature reaches the set temperature, if the odor prevention function is activated, controls the fan speed, the angle of the air guide vane, and the compressor operating frequency based on the pipe temperature of the indoor heat exchanger and the indoor ambient temperature. This reduces odor generation by ensuring the compressor does not stop running after the temperature is reached, prevents the indoor temperature from dropping during odor prevention by controlling the fan speed, and avoids users experiencing residual odors by controlling the angle of the air guide vane. This improves indoor comfort during odor prevention and ensures a better user experience.

[0020] 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.

[0021] The technical solutions of the present application will be further described in detail below with the help of the accompanying drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A flowchart of an embodiment of the control method of the air conditioner of the present application;

[0023] Figure 2 A structural diagram of an embodiment of the control device of the air conditioner of the present application;

[0024] Figure 3 A flowchart of another embodiment of the control method of the air conditioner of the present application.

[0025] In the embodiments of the present application, the reference signs in the accompanying drawings are as follows:

[0026] 102 - acquisition unit; 104 - control unit. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be described in detail below with the help of specific embodiments of the present application and the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0028] According to an embodiment of the present application, a control method of an air conditioner is provided, the air conditioner comprising an indoor fan, a guide vane, a compressor, and an indoor heat exchanger; the air conditioner has an odor prevention function; the odor prevention function is used to prevent the indoor unit from generating odor. As shown in the flowchart of an embodiment of the method of the present application. The control method of the air conditioner can comprise steps S110 to S140. Figure 1

[0029] At step S110, when the air conditioner is running in a cooling mode or a dehumidification mode, the indoor ambient temperature and the tube temperature of the indoor heat exchanger are acquired.

[0030] In the cooling mode and the dehumidification mode, the tube temperature of the indoor heat exchanger is low, and when the tube temperature of the indoor heat exchanger is lower than the dew point temperature, water starts to condense on the indoor heat exchanger.

[0031] At step S120, after the indoor ambient temperature reaches the set temperature, it is determined whether to start the odor prevention function.

[0032] ​When the indoor environment temperature is reduced to the set temperature, the outdoor unit is usually stopped and the indoor unit is switched to the air supply mode. At this time, the water film on the indoor heat exchanger evaporates and brings the odor to the indoor. The source of the odor is the hydrophilic aluminum foil on the indoor heat exchanger, but the odor is not generated in all cases. Therefore, when the temperature point is reached, the user selects whether to start the odor prevention function. If the user feels that the air conditioner has an odor, the odor prevention function can be started to remove the odor; if the user does not feel the odor, the odor prevention function can not be started, and the air conditioner operates according to the control logic of the temperature point.

[0033] At step S130, if it is determined to start the odor prevention function, the air damper of the indoor fan, the angle of the air deflector, and the operating frequency of the compressor are controlled according to the tube temperature of the indoor heat exchanger and the indoor environment temperature.

[0034] After the user starts the odor prevention function, the air conditioner adjusts the operating state of the air conditioner in real time according to the tube temperature of the indoor heat exchanger and the indoor environment temperature, reduces the generation of odor without affecting the indoor comfort, and avoids the user feeling the odor.

[0035] In some embodiments, the specific process of controlling the air damper of the indoor fan, the angle of the air deflector, and the operating frequency of the compressor according to the tube temperature of the indoor heat exchanger and the indoor environment temperature in step S130 includes steps S210 to S230.

[0036] Step S210 controls the angle of the air deflector to be a preset angle, and the preset angle is an angle at which the air conditioner does not blow people.

[0037] Under the odor prevention function, although the generated odor can be reduced, there may still be a little odor, so the air deflector is maintained at the non-blowing angle to prevent the user from feeling the odor.

[0038] Step S220 controls the air damper of the indoor fan according to the indoor environment temperature.

[0039] Since the indoor environment temperature has reached the set temperature, the amount of cold output by the air conditioner needs to be reduced in the odor prevention process to avoid further reduction of the indoor environment temperature and affect the indoor comfort.

[0040] In some embodiments, the specific process of controlling the air damper of the indoor fan according to the indoor environment temperature in step S220 includes steps S310 to S340.

[0041] Step S310 reduces the air damper of the indoor fan by one step.

[0042] When the inner fan speed is adjusted, the inner fan speed is first reduced to the odor-preventing speed based on the fan speed in the cooling mode or the dehumidifying mode. The speed of the inner fan corresponding to the odor-preventing speed is lower than the conventional speed, for example, the lowest conventional speed is 450 r, and the speed of the inner fan corresponding to the odor-preventing speed is 300 r. Meanwhile, multiple gears can be set, for example, 100 r, 200 r, and 300 r.

[0043] In step S320, it is determined whether the temperature change rate of the indoor environment temperature is greater than a preset temperature change rate.

[0044] In step S330, if the temperature change rate of the indoor environment temperature is greater than the preset temperature change rate, the fan speed of the inner fan is reduced by one gear; if the fan speed of the inner fan has been the lowest fan speed before the fan speed of the inner fan is reduced, the inner fan is controlled to stop rotating.

[0045] The temperature change rate of the indoor environment temperature is used to reflect whether the indoor environment temperature continues to decrease. The temperature change rate of the indoor environment temperature is obtained by subtracting the indoor environment temperature after a period of time from the current indoor environment temperature and dividing the interval time. If the temperature change rate of the indoor environment temperature is greater than the preset temperature change rate, it is considered that the indoor environment temperature continues to decrease, and the air conditioner outputs too much cold to the indoor environment, which affects the comfort of the indoor environment. At this time, the fan speed of the inner fan is reduced to reduce the heat exchange efficiency between the indoor air and the indoor heat exchanger and to reduce the output of cold. If the temperature change rate of the indoor environment temperature is greater than the preset temperature change rate and the fan speed of the inner fan has been reduced to the lowest fan speed, the inner fan is controlled to stop rotating. At this time, no cold is output to the indoor environment, and the indoor temperature begins to rise.

[0046] Optionally, in the case that the inner fan stops rotating, if the indoor environment temperature rises to the set temperature, the inner fan is started and operates according to the odor-preventing speed.

[0047] In step S340, if the temperature change rate of the indoor environment temperature is less than or equal to the preset temperature change rate, the state of the inner fan is maintained unchanged.

[0048] If the indoor environment temperature does not decrease during the odor-preventing process, it is detected that the temperature change rate of the indoor environment temperature is less than or equal to the preset temperature change rate. At this time, the state of the inner fan is maintained unchanged, that is, the inner fan continues to operate according to the current fan speed or continues to stop.

[0049] By controlling the fan speed of the inner fan according to the indoor environment temperature during the odor-preventing process to adjust the output of cold of the air conditioner, the indoor environment temperature is maintained around the set temperature, and the comfort of the indoor environment is ensured.

[0050] In step S230, the operating frequency of the compressor is controlled according to the tube temperature of the indoor heat exchanger.

[0051] After the anti-odor function is turned on, the operating frequency of the compressor remains unchanged, that is, the operating frequency in the refrigeration or dehumidification mode is maintained, and then the operating frequency of the compressor is adjusted according to the tube temperature of the indoor heat exchanger to reduce the evaporation of the water film on the indoor heat exchanger and reduce the generation of odor while ensuring that the indoor heat exchanger does not freeze.

[0052] In some embodiments, in step S230, the operating frequency of the compressor is controlled according to the tube temperature of the indoor heat exchanger, including steps S410 to S450.

[0053] In step S410, the relationship between the tube temperature of the indoor heat exchanger and a preset first temperature threshold is determined.

[0054] In step S420, if the tube temperature of the indoor heat exchanger is greater than or equal to the preset first temperature threshold, the state of the compressor remains unchanged.

[0055] After the temperature point is reached and the anti-odor function is turned on, the compressor does not stop and continues to operate at the frequency in the refrigeration or dehumidification mode. Since the air damper of the indoor fan is reduced at this time, the cold quantity at the indoor heat exchanger continues to increase, and the tube temperature of the indoor heat exchanger continues to decrease. When the tube temperature of the indoor heat exchanger is lower than 0℃, there is a risk of freezing, and the indoor fan will produce obvious noise, so it is necessary to prevent the tube temperature of the indoor heat exchanger from decreasing too much in advance. The preset first temperature threshold is an advance temperature for preventing freezing, which can be set to 5℃. When the tube temperature of the indoor heat exchanger is ≥5℃, there is no need to prevent freezing in advance, and the compressor continues to operate at the current frequency. When the tube temperature of the indoor heat exchanger is <5℃, the anti-freezing treatment is started.

[0056] In step S430, if the tube temperature of the indoor heat exchanger is less than the preset first temperature threshold, the operating frequency of the compressor is reduced, and then the relationship between the tube temperature of the indoor heat exchanger and a preset second temperature threshold is determined. The preset second temperature threshold < the preset first temperature threshold.

[0057] In step S440, if the tube temperature of the indoor heat exchanger is greater than or equal to the preset second temperature threshold, the state of the compressor remains unchanged.

[0058] In step S450, if the tube temperature of the indoor heat exchanger is less than the preset second temperature threshold, the operating frequency of the compressor is reduced.

[0059] When the tube temperature of the indoor heat exchanger is less than 5°C, the frequency of the compressor is first reduced to reduce the cold energy accumulated at the indoor heat exchanger. Then it is determined whether the tube temperature of the indoor heat exchanger is reduced to a preset second temperature threshold. The preset second temperature threshold can be set to 2°C. When the tube temperature of the indoor heat exchanger is greater than or equal to 2°C, the frequency of the compressor is kept unchanged. When the tube temperature of the indoor heat exchanger is less than 2°C, the frequency of the compressor is continuously reduced until it is reduced to the minimum frequency. Since there is water on the indoor heat exchanger and the speed of the indoor fan is extremely low or even stopped, if the tube temperature of the indoor heat exchanger is less than 2°C, that is, the tube temperature of the indoor heat exchanger has approached the freezing temperature 0°C, the purpose of reducing the frequency of the compressor is to make the tube temperature of the indoor heat exchanger greater than or equal to 2°C.

[0060] In some embodiments, the air conditioner further comprises an outdoor fan. In order to increase the tube temperature of the indoor heat exchanger, the temperature of the refrigerant flowing into the indoor heat exchanger can also be increased by reducing the condensation efficiency, and the way of reducing the condensation efficiency includes reducing the speed of the outdoor fan. When the tube temperature of the indoor heat exchanger continues to decrease, the speed of the outdoor fan is continuously reduced until the outdoor fan is stopped.

[0061] In some embodiments, the process of controlling the compressor to stop is further included, specifically comprising: in the case that the tube temperature of the indoor heat exchanger is less than the preset second temperature threshold, if the frequency of the compressor is the preset minimum frequency and the outdoor fan is stopped, the compressor is controlled to stop.

[0062] When the tube temperature of the indoor heat exchanger is greater than or equal to 2°C and the frequency of the compressor is the minimum frequency, the outdoor fan is also stopped, the compressor is controlled to stop, at this time, the indoor unit is equivalent to the air supply mode, with the rotation of the indoor fan, the cold energy at the indoor heat exchanger is continuously dissipated in the air, and the tube temperature of the indoor heat exchanger is increased.

[0063] Optionally, when the tube temperature of the indoor heat exchanger is increased to 2°C, the compressor and the outdoor fan are started.

[0064] At step S140, if it is determined that the anti-odor function is not started, the compressor is controlled to stop.

[0065] After the user selects not to start the anti-odor function, the air conditioner operates according to the control logic of stopping at the temperature point, the states of the indoor fan and the air deflector are unchanged, the outdoor unit stops operating, and the air conditioner is restarted to perform refrigeration or dehumidification after the indoor environment temperature rises.

[0066] In the scheme, when the air conditioner produces odor, the operation frequency of the compressor is controlled to reduce the generation of odor, and freezing of the tube temperature of the indoor heat exchanger is avoided. At the same time, the air deflector angle is controlled to avoid the user from feeling the residual odor and improve the user experience.

[0067] Figure 3 For another embodiment of the flowchart of the control method of the air conditioner of the present application, as shown in Figure 3 , the method comprises:

[0068] Step 1, when the air conditioner is in a cooling mode or a dehumidification mode, it is determined whether the indoor temperature reaches the set temperature point. If the indoor temperature does not reach the set temperature point, the air conditioner continues to operate normally. If the indoor temperature reaches the set temperature point, if the user does not turn on the odor prevention function at this time, step 2 is executed; if the user turns on the odor prevention function, step 3 is executed.

[0069] Step 2, the state of the inner fan and the air deflector is unchanged, the compressor frequency continues to decrease and finally stops, and the compressor is restarted after the indoor temperature rises.

[0070] Step 3, the air deflector is turned to an angle that does not blow people and is maintained; the speed of the inner fan is adjusted to the odor prevention speed or stopped; the compressor does not stop, and the operating frequency of the compressor is adjusted according to the tube temperature of the indoor heat exchanger, so that the tube temperature of the indoor heat exchanger is greater than or equal to 2℃. The compressor is restarted after the indoor temperature rises.

[0071] The technical scheme of the embodiment is adopted, when the air conditioner operates in a cooling mode or a dehumidification mode, if it is determined to turn on the odor prevention function after the indoor environment temperature reaches the set temperature, the air damper, the angle of the air deflector, and the operating frequency of the compressor are controlled according to the tube temperature of the indoor heat exchanger and the indoor environment temperature. Thus, by not stopping the compressor after reaching the temperature point to reduce the generation of odor, by controlling the air damper to avoid the indoor temperature from decreasing during the odor prevention process, and by controlling the angle of the air deflector to avoid the user from feeling the residual odor, the indoor comfort during the odor prevention process is improved, and better user experience is ensured.

[0072] According to the embodiment of the present application, a control device of an air conditioner corresponding to the control method of the air conditioner is also provided. The air conditioner comprises an inner fan, an air deflector, a compressor, and an indoor heat exchanger; the air conditioner has an odor prevention function; the odor prevention function is used to prevent the indoor unit from generating odor. Referring to Figure 2 , the structural schematic diagram of an embodiment of the device of the present application. The control device of the air conditioner can comprise an acquisition unit 102 and a control unit 104.

[0073] The acquisition unit 102 is configured to acquire the indoor environment temperature and the tube temperature of the indoor heat exchanger when the air conditioner operates in a cooling mode or a dehumidification mode.

[0074] In the cooling mode and the dehumidification mode, the tube temperature of the indoor heat exchanger is low, and when the tube temperature of the indoor heat exchanger is lower than the dew point temperature, water starts to hang on the indoor heat exchanger.

[0075] The control unit 104 is configured to determine whether to start the anti-odor function after the indoor environment temperature reaches the set temperature.

[0076] When the indoor environment temperature decreases to the set temperature, the outdoor unit is usually stopped and the indoor unit is switched to the air supply mode. At this time, the water film on the indoor heat exchanger evaporates and carries the odor into the room. The source of the odor is the hydrophilic aluminum foil on the indoor heat exchanger, but odor is not produced in all cases. Therefore, when the temperature point is reached, the user selects whether to start the anti-odor function. If the user feels that the air conditioner has odor, the anti-odor function can be started to remove the odor; if the user does not feel the odor, the anti-odor function can not be started, and the air conditioner operates according to the control logic of stopping when the temperature point is reached.

[0077] The control unit 104 is further configured to, if it is determined to start the anti-odor function, control the wind level of the indoor fan, the angle of the air deflector, and the operating frequency of the compressor according to the tube temperature of the indoor heat exchanger and the indoor environment temperature.

[0078] After the user starts the anti-odor function, the air conditioner adjusts the operating state of the air conditioner in real time according to the tube temperature of the indoor heat exchanger and the indoor environment temperature, reduces the generation of odor without affecting the indoor comfort, and avoids the user feeling the odor.

[0079] In some embodiments, the control unit 104 controls the wind level of the indoor fan, the angle of the air deflector, and the operating frequency of the compressor according to the tube temperature of the indoor heat exchanger and the indoor environment temperature, including:

[0080] The control unit 104 is specifically configured to control the angle of the air deflector to be a preset angle, and the preset angle is an angle at which the air conditioner does not blow people.

[0081] Under the anti-odor function, although the generation of odor can be reduced, there may still be a little odor, so the air deflector is maintained at the angle of not blowing people to prevent the user from feeling the odor.

[0082] The control unit 104 is specifically configured to control the wind level of the indoor fan according to the indoor environment temperature.

[0083] Since the indoor environment temperature has reached the set temperature, the amount of cold air output by the air conditioner needs to be reduced during the anti-odor process to avoid further reduction of the indoor environment temperature and affect the indoor comfort.

[0084] In some embodiments, the control unit 104 controls the wind level of the indoor fan according to the indoor environment temperature, including:

[0085] The control unit 104 is specifically configured to reduce the wind level of the indoor fan by one level.

[0086] In the process of adjusting the inner fan speed, the inner fan speed is first reduced to the odor-preventing speed based on the speed in the cooling mode or the dehumidifying mode. The speed corresponding to the odor-preventing speed is lower than the normal speed, for example, the normal speed is 450 r, and the speed of the inner fan corresponding to the odor-preventing speed is 300 r. Meanwhile, multiple gears can be set, for example, 100 r, 200 r, and 300 r.

[0087] The control unit 104 is specifically configured to determine the temperature change rate of the indoor environment temperature.

[0088] The control unit 104 is specifically configured to reduce the speed of the inner fan by one gear if the temperature change rate of the indoor environment temperature is greater than a preset temperature change rate, and stop the inner fan if the speed of the inner fan has been the lowest speed before the speed of the inner fan is reduced.

[0089] The temperature change rate of the indoor environment temperature is used to reflect whether the indoor environment temperature continues to decrease, and is obtained by subtracting the indoor environment temperature after a period of time from the current indoor environment temperature and dividing the interval time. If the temperature change rate of the indoor environment temperature is greater than the preset temperature change rate, it is considered that the indoor environment temperature continues to decrease, and the air conditioner outputs too much cold to the indoor environment, which affects the comfort of the indoor environment. At this time, the speed of the inner fan is reduced to reduce the heat exchange efficiency between the indoor air and the indoor heat exchanger and reduce the output of cold. If the temperature change rate of the indoor environment temperature is greater than the preset temperature change rate and the speed of the inner fan has been reduced to the lowest speed, the inner fan is stopped, at which time no cold is output to the indoor environment, and the indoor temperature begins to rise.

[0090] Optionally, in the case that the inner fan is stopped, if the indoor environment temperature rises to a set temperature, the inner fan is started and runs according to the odor-preventing speed.

[0091] The control unit 104 is specifically configured to keep the state of the inner fan unchanged if the temperature change rate of the indoor environment temperature is less than or equal to the preset temperature change rate.

[0092] If the indoor environment temperature does not decrease during the odor-preventing process, it is detected that the temperature change rate of the indoor environment temperature is less than or equal to the preset temperature change rate, at which time the state of the inner fan is kept unchanged, that is, the inner fan continues to run according to the current speed or continues to be stopped.

[0093] By controlling the speed of the inner fan according to the indoor environment temperature in the odor-preventing process to adjust the output of cold of the air conditioner, the indoor environment temperature is maintained around the set temperature, and the comfort of the indoor environment is ensured.

[0094] The control unit 104 is specifically configured to control the operating frequency of the compressor according to the tube temperature of the indoor heat exchanger.

[0095] After the anti-odor function is turned on, the operating frequency of the compressor remains unchanged, that is, the operating frequency in the refrigeration or dehumidification mode is maintained, and then the operating frequency of the compressor is dynamically adjusted according to the tube temperature of the indoor heat exchanger to reduce the evaporation of the water film on the indoor heat exchanger and reduce the generation of odor while ensuring that the indoor heat exchanger does not freeze.

[0096] In some embodiments, the control unit 104 controls the operating frequency of the compressor according to the tube temperature of the indoor heat exchanger, including:

[0097] The control unit 104 is specifically configured to determine the size relationship between the tube temperature of the indoor heat exchanger and a preset first temperature threshold.

[0098] The control unit 104 is specifically configured to keep the state of the compressor unchanged if the tube temperature of the indoor heat exchanger is greater than or equal to the preset first temperature threshold.

[0099] After the temperature point is reached and the anti-odor function is turned on, the compressor does not stop and continues to operate at the frequency in the refrigeration or dehumidification mode. Since the air damper of the indoor fan is reduced at this time, the cold quantity at the indoor heat exchanger continues to increase, and the tube temperature of the indoor heat exchanger continues to decrease. When the tube temperature of the indoor heat exchanger is lower than 0°C, there is a risk of freezing, and the indoor fan will produce obvious noise, so it is necessary to prevent the tube temperature of the indoor heat exchanger from decreasing too much in advance. The preset first temperature threshold is an advance temperature for preventing freezing, which can be set to 5°C. When the tube temperature of the indoor heat exchanger is greater than or equal to 5°C, there is no need to prevent freezing in advance, and the compressor continues to operate at the current frequency. When the tube temperature of the indoor heat exchanger is less than 5°C, the anti-freezing treatment is started.

[0100] The control unit 104 is specifically configured to decrease the operating frequency of the compressor if the tube temperature of the indoor heat exchanger is less than the preset first temperature threshold, and then determine the size relationship between the tube temperature of the indoor heat exchanger and a preset second temperature threshold, wherein the preset second temperature threshold is less than the preset first temperature threshold.

[0101] The control unit 104 is specifically configured to keep the state of the compressor unchanged if the tube temperature of the indoor heat exchanger is greater than or equal to the preset second temperature threshold.

[0102] The control unit 104 is specifically configured to decrease the operating frequency of the compressor if the tube temperature of the indoor heat exchanger is less than the preset second temperature threshold.

[0103] When the tube temperature of the indoor heat exchanger is less than 5℃, the frequency of the compressor is first reduced to reduce the cold energy accumulated at the indoor heat exchanger. Then it is determined whether the tube temperature of the indoor heat exchanger is reduced to a preset second temperature threshold. The preset second temperature threshold can be set to 2℃. When the tube temperature of the indoor heat exchanger is greater than or equal to 2℃, the frequency of the compressor is kept unchanged. When the tube temperature of the indoor heat exchanger is less than 2℃, the frequency of the compressor is continuously reduced until it is reduced to the minimum frequency. Since there is water on the indoor heat exchanger and the speed of the indoor fan is extremely low or even stopped, if the tube temperature of the indoor heat exchanger is less than 2℃, that is, the tube temperature of the indoor heat exchanger has approached the freezing temperature 0℃, the purpose of reducing the frequency of the compressor is to make the tube temperature of the indoor heat exchanger greater than or equal to 2℃.

[0104] In some embodiments, the air conditioner further comprises an outdoor fan. In order to increase the tube temperature of the indoor heat exchanger, the temperature of the refrigerant flowing into the indoor heat exchanger can also be increased by reducing the condensation efficiency, and the way of reducing the condensation efficiency includes reducing the speed of the outdoor fan. When the tube temperature of the indoor heat exchanger continues to decrease, the speed of the outdoor fan is continuously reduced until the outdoor fan is stopped.

[0105] In some embodiments, the control unit 104 is further configured to, in the case that the tube temperature of the indoor heat exchanger is less than the preset second temperature threshold, if the frequency of the compressor is the preset minimum frequency and the outdoor fan is stopped, control the compressor to stop.

[0106] When the tube temperature of the indoor heat exchanger is greater than or equal to 2℃ and the frequency of the compressor is the minimum frequency, the outdoor fan is also stopped, the compressor is controlled to stop, at this time, the indoor unit is equivalent to being in the air supply mode, and as the indoor fan rotates, the cold energy at the indoor heat exchanger is continuously dissipated in the air, so as to increase the tube temperature of the indoor heat exchanger.

[0107] Optionally, when the tube temperature of the indoor heat exchanger is increased to 2℃, the compressor and the outdoor fan are started.

[0108] The control unit 104 is further configured to, if it is determined not to start the anti-odor function, control the compressor to stop.

[0109] After the user selects not to start the anti-odor function, the air conditioner operates according to the control logic of stopping when the temperature point is reached, the states of the indoor fan and the air deflector are unchanged, the outdoor unit stops operating, and the air conditioner is restarted to perform refrigeration or dehumidification after the indoor environment temperature rises.

[0110] In the scheme, when the air conditioner produces odor, the running frequency of the compressor is controlled to reduce the generation of odor, and freezing of the tube of the indoor heat exchanger is avoided. At the same time, the air deflector is controlled to ensure the comfort of the indoor environment during the anti-odor process, and the indoor temperature is prevented from being reduced due to the non-stop of the compressor. The angle of the air deflector can avoid the user from feeling the residual odor, and improve the user experience.

[0111] Figure 3 For another embodiment of the flowchart of the control method of the air conditioner of the present application, as shown in Figure 3 The method comprises:

[0112] Step 1, when the air conditioner is in a cooling mode or a dehumidification mode, it is determined whether the indoor temperature reaches a set temperature point. If the indoor temperature does not reach the set temperature point, the air conditioner continues to operate normally. If the indoor temperature reaches the set temperature point, if the user does not turn on the odor prevention function at this time, step 2 is executed; if the user turns on the odor prevention function, step 3 is executed.

[0113] Step 2, the state of the inner fan and the air deflector is unchanged, the compressor frequency continues to decrease and finally stops, and the compressor is restarted after the indoor temperature rises.

[0114] Step 3, the air deflector is turned to an angle of not blowing people and maintained; the speed of the inner fan is adjusted to an odor prevention speed or stopped; the compressor does not stop, and the operating frequency of the compressor is adjusted according to the tube temperature of the indoor heat exchanger, so that the tube temperature of the indoor heat exchanger is greater than or equal to 2℃. The compressor is restarted after the indoor temperature rises.

[0115] Since the processing and functions realized by the device of the embodiment basically correspond to the embodiments, principles and examples of the foregoing method, the descriptions of the embodiment that are not described in detail can be referred to the related descriptions in the foregoing embodiments, which will not be described here.

[0116] By adopting the technical solution of the present application, when the air conditioner operates in a cooling mode or a dehumidification mode, if it is determined to turn on the odor prevention function after the indoor environment temperature reaches the set temperature, the air damper of the inner fan, the angle of the air deflector, and the operating frequency of the compressor are controlled according to the tube temperature of the indoor heat exchanger and the indoor environment temperature. Thus, the compressor does not stop after reaching the temperature point to reduce the generation of odor, the air damper of the inner fan is controlled to avoid the indoor temperature from being reduced during the odor prevention process, and the angle of the air deflector is controlled to avoid the user from feeling the residual odor, thereby improving the comfort of the indoor environment during the odor prevention process and ensuring a better user experience.

[0117] According to the embodiment of the present application, an air conditioner corresponding to the control device of the air conditioner is also provided. The air conditioner can comprise the control device of the air conditioner described above.

[0118] Since the processing and functions realized by the air conditioner of the embodiment basically correspond to the embodiments, principles and examples of the foregoing device, the descriptions of the embodiment that are not described in detail can be referred to the related descriptions in the foregoing embodiments, which will not be described here.

[0119] The technical scheme of the present application, when the air conditioner is running in the refrigeration mode or the dehumidification mode, if it is determined to start the anti-odor function after the indoor environment temperature reaches the set temperature, the air damper of the indoor fan, the angle of the air deflector, and the running frequency of the compressor are controlled according to the tube temperature of the indoor heat exchanger and the indoor environment temperature. Thus, the compressor does not stop after reaching the temperature point to reduce the generation of odor, the air damper of the indoor fan is controlled to avoid the indoor temperature from being reduced during the anti-odor process, and the angle of the air deflector is controlled to avoid the user from feeling the residual odor, thereby improving the comfort of the indoor environment during the anti-odor process and ensuring better user experience.

[0120] According to the embodiment of the present application, a storage medium corresponding to the control method of the air conditioner is also provided, and the storage medium comprises a stored program, wherein when the program is executed, the device where the storage medium is located performs the control method of the air conditioner.

[0121] Since the processing and functions realized by the storage medium of the present embodiment are basically corresponding to the embodiments, principles and examples of the foregoing method, the description of the present embodiment does not describe the details, and the related descriptions in the foregoing embodiments can be referred to, which will not be described herein.

[0122] The technical scheme of the present application, when the air conditioner is running in the refrigeration mode or the dehumidification mode, if it is determined to start the anti-odor function after the indoor environment temperature reaches the set temperature, the air damper of the indoor fan, the angle of the air deflector, and the running frequency of the compressor are controlled according to the tube temperature of the indoor heat exchanger and the indoor environment temperature. Thus, the compressor does not stop after reaching the temperature point to reduce the generation of odor, the air damper of the indoor fan is controlled to avoid the indoor temperature from being reduced during the anti-odor process, and the angle of the air deflector is controlled to avoid the user from feeling the residual odor, thereby improving the comfort of the indoor environment during the anti-odor process and ensuring better user experience.

[0123] According to the embodiment of the present application, a computer program product corresponding to the control method of the air conditioner is also provided, and the computer program product comprises a computer program, and the computer program product is processed to realize the steps of the control method of the air conditioner.

[0124] Since the processing and functions realized by the computer program product of the present embodiment are basically corresponding to the embodiments, principles and examples of the foregoing method, the description of the present embodiment does not describe the details, and the related descriptions in the foregoing embodiments can be referred to, which will not be described herein.

[0125] The technical scheme of the present application, when the air conditioner is running in the refrigeration mode or the dehumidification mode, if it is determined to start the anti-odor function when the indoor environment temperature reaches the set temperature, the air inlet of the indoor fan, the angle of the air deflector, and the running frequency of the compressor are controlled according to the tube temperature of the indoor heat exchanger and the indoor environment temperature. Thus, the compressor does not stop running after reaching the temperature point to reduce the generation of odor, the air inlet of the indoor fan is controlled to avoid the indoor temperature from being reduced during the anti-odor process, and the angle of the air deflector is controlled to avoid the user from feeling the residual odor, thereby improving the comfort of the indoor environment during the anti-odor process and ensuring better user experience.

[0126] In summary, those skilled in the art can easily understand that the above-mentioned advantageous modes can be freely combined and superimposed without conflict.

[0127] The above only describes the embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A control method of an air conditioner, characterized by, The air conditioner comprises an indoor fan, a guide vane, a compressor and an indoor heat exchanger; The air conditioner has an odor prevention function; the odor prevention function is used for preventing the indoor unit from generating odor; The method comprises: When the air conditioner operates in a cooling mode or a dehumidifying mode, an indoor environment temperature and a tube temperature of the indoor heat exchanger are acquired; After the indoor environment temperature reaches a set temperature, it is determined whether to start the odor prevention function; If it is determined to start the odor prevention function, the wind level of the indoor fan, the angle of the guide vane and the operating frequency of the compressor are controlled according to the tube temperature of the indoor heat exchanger and the indoor environment temperature; If it is determined not to start the odor prevention function, the compressor is controlled to stop operating; The angle of the guide vane is controlled to be a preset angle, and the preset angle is an angle at which air outlet of the air conditioner does not blow people; The wind level of the indoor fan is controlled according to the indoor environment temperature; The operating frequency of the compressor is controlled according to the tube temperature of the indoor heat exchanger; The wind level of the indoor fan is controlled according to the indoor environment temperature, which comprises: The wind level of the indoor fan is reduced by one level; The temperature change rate of the indoor environment temperature is determined; If the temperature change rate of the indoor environment temperature is greater than a preset temperature change rate, the wind level of the indoor fan is reduced by one level; if the wind level of the indoor fan has been the lowest wind level before the wind level of the indoor fan is reduced, the indoor fan is controlled to stop rotating; If the temperature change rate of the indoor environment temperature is less than or equal to the preset temperature change rate, the state of the indoor fan is kept unchanged. The operating frequency of the compressor is controlled according to the tube temperature of the indoor heat exchanger, which comprises:

2. The control method of the air conditioner according to claim 1, characterized by, The relationship between the tube temperature of the indoor heat exchanger and a preset first temperature threshold is determined; If the tube temperature of the indoor heat exchanger is greater than or equal to the preset first temperature threshold, the state of the compressor is kept unchanged; If the tube temperature of the indoor heat exchanger is less than the preset first temperature threshold, the operating frequency of the compressor is reduced; then the relationship between the tube temperature of the indoor heat exchanger and a preset second temperature threshold is determined; the preset second temperature threshold is less than the preset first temperature threshold; If the tube temperature of the indoor heat exchanger is greater than or equal to the preset second temperature threshold, the state of the compressor is kept unchanged; If the tube temperature of the indoor heat exchanger is less than the preset second temperature threshold, the operating frequency of the compressor is reduced. The air conditioner further comprises an outdoor fan; the method further comprises:

3. The control method of the air conditioner according to claim 2, characterized by, In the case that the tube temperature of the indoor heat exchanger is less than the preset second temperature threshold, if the operating frequency of the compressor is a preset lowest frequency and the outdoor fan stops rotating, the compressor is controlled to stop operating. The air conditioner comprises an indoor fan, a guide vane, a compressor and an indoor heat exchanger; 4. A control device of an air conditioner, characterized by comprising: The air conditioner has an odor prevention function; the odor prevention function is used for preventing the indoor unit from generating odor; The device comprises: An acquisition unit is configured to acquire an indoor environment temperature and a tube temperature of the indoor heat exchanger when the air conditioner operates in a cooling mode or a dehumidifying mode; ​ The control unit is configured to determine whether to start the odor prevention function after the indoor environment temperature reaches a set temperature. The control unit is further configured to control the air volume of the indoor fan, the angle of the air deflector, and the operation frequency of the compressor according to the tube temperature of the indoor heat exchanger and the indoor environment temperature if it is determined to start the odor prevention function. The control unit is further configured to control the compressor to stop if it is determined not to start the odor prevention function. The control unit controls the air volume of the indoor fan, the angle of the air deflector, and the operation frequency of the compressor according to the tube temperature of the indoor heat exchanger and the indoor environment temperature, including: controlling the angle of the air deflector to be a preset angle, which is an angle at which air is not blown by the air conditioner; controlling the air volume of the indoor fan according to the indoor environment temperature; controlling the operation frequency of the compressor according to the tube temperature of the indoor heat exchanger; The control unit controls the air volume of the indoor fan according to the indoor environment temperature, including: decreasing the air volume of the indoor fan by one level; determining the temperature change rate of the indoor environment temperature; if the temperature change rate of the indoor environment temperature is greater than a preset temperature change rate, decreasing the air volume of the indoor fan by one level; if the air volume of the indoor fan has been the lowest before the air volume is decreased, controlling the indoor fan to stop rotating; if the temperature change rate of the indoor environment temperature is less than or equal to the preset temperature change rate, keeping the state of the indoor fan unchanged.

5. An air conditioner characterized by comprising: including: The control device of the air conditioner of claim 4.

6. A storage medium, characterized by The storage medium includes a stored program, wherein the program controls the device where the storage medium is located to perform the control method of the air conditioner of any one of claims 1 to 3 when the program is executed.

7. A computer program product comprising a computer program, characterized in that, The computer program is executed by a processor to implement the steps of the method of any one of claims 1 to 3.

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