WO2021174896A1 - Procédé de nettoyage de climatiseur et climatiseur - Google Patents

Procédé de nettoyage de climatiseur et climatiseur Download PDF

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Publication number
WO2021174896A1
WO2021174896A1 PCT/CN2020/126871 CN2020126871W WO2021174896A1 WO 2021174896 A1 WO2021174896 A1 WO 2021174896A1 CN 2020126871 W CN2020126871 W CN 2020126871W WO 2021174896 A1 WO2021174896 A1 WO 2021174896A1
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Prior art keywords
temperature
sterilization
heat exchanger
outdoor
air conditioner
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PCT/CN2020/126871
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English (en)
Chinese (zh)
Inventor
李阳
张心怡
王飞
袁俊军
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青岛海尔空调器有限总公司
海尔智家股份有限公司
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Publication of WO2021174896A1 publication Critical patent/WO2021174896A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/04—Heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/20—Feedback from users

Definitions

  • This application relates to the technical field of smart home appliances, for example, to a method for cleaning an air conditioner and an air conditioner.
  • the cleanliness and health of the home environment have been valued by more and more users.
  • the level of cleanliness can greatly affect the cleanliness of the indoor environment. From the long-term use experience of the air conditioner, when the air conditioner circulates the indoor air, dust and impurities in the indoor environment will enter the inside of the air conditioner with the airflow, causing the air conditioner to accumulate after a long time of use A lot of dirt.
  • existing air conditioner manufacturers have also developed and manufactured many air-conditioning products with self-cleaning functions, such as air conditioners with spray and flushing heat exchanger functions, and air conditioners with steam cleaning heat exchanger functions. ,and many more.
  • the embodiments of the present disclosure provide a method for cleaning an air conditioner and an air conditioner to solve the technical problem of poor sterilization effect of the air conditioner cleaning function in the related art.
  • the method includes:
  • the surface temperature of the target heat exchanger is lowered to the second sterilization temperature, and rapid cooling sterilization is performed.
  • the air conditioner includes a processor and a memory storing program instructions, and the processor is configured to execute the method for cleaning the air conditioner as shown in some of the above embodiments when the program instructions are executed.
  • the method for cleaning the air conditioner provided by the embodiments of the present disclosure can kill bacteria growing on the heat exchanger of the air conditioner through the two processes of high temperature sterilization and rapid cooling sterilization successively. Kill bacteria, while rapid-cooling sterilization uses rapid changes in temperature from high to low to kill bacteria; this method can effectively reduce bacteria, molds and other microorganisms on the heat exchanger, thereby improving the cleanliness of the air conditioner.
  • Fig. 1 is a schematic diagram of a method for cleaning an air conditioner provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of parameter changes of various components during the cleaning process provided by the embodiment of the present disclosure
  • Fig. 3 is a schematic diagram of a device for cleaning an air conditioner provided by an embodiment of the present disclosure
  • Fig. 4 is a schematic diagram of another device for cleaning an air conditioner provided by an embodiment of the present disclosure.
  • A/B means: A or B.
  • a and/or B means: A or B, or, A and B.
  • Fig. 1 is a schematic diagram of a method for cleaning an air conditioner provided by an embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a method for cleaning an air conditioner, which can be used to kill bacteria, molds, etc. inside the air conditioner, and reduce the number of microorganisms that breed; in this embodiment, the method include:
  • a cleaning option such as "sterilization function” or "sterilization function” is added to the remote control and control panel of the air conditioner.
  • This cleaning option can be used to trigger the operation of the air conditioner cleaning in this embodiment.
  • the method flow in this way, after the user selects the cleaning option, the air conditioner generates a related cleaning instruction and executes it in response.
  • the air conditioner can also generate related cleaning instructions through detection triggering, timing triggering, etc.
  • the air conditioner is equipped with a microorganism detection device that can be used to detect one or more specific types of microorganisms. Content, when the detected microorganism content is higher than the set content threshold, it means that the air conditioner breeds more microorganisms, and the air conditioner generates related cleaning instructions; or, the air conditioner has a timing module that can be used to count the air conditioner
  • the cumulative operation time is like the cumulative operation time of the cooling mode or dehumidification mode.
  • the cumulative operation time of the air conditioner cooling mode or dehumidification mode increases, the more condensed water inside the air conditioner will be condensed in this humid environment. The more the number of microorganisms multiplies and grows, so it can be set that when the cumulative operating time of the air conditioner exceeds the set time threshold, the air conditioner generates a related cleaning instruction.
  • the air conditioner can also be triggered in conjunction with the original cleaning function of the air conditioner.
  • the original cleaning function is executed before the cleaning process defined by the original cleaning function is generated. Instruct and execute the cleaning method process of this application, or generate a cleaning instruction and execute the cleaning method process of this application after executing the cleaning process defined by the original cleaning function; that is, after the user selects an original cleaning function, the air conditioner Two different cleaning processes have been implemented successively, and the cleanliness of the inside of the air conditioner is effectively guaranteed through the double cleaning method.
  • the original cleaning function of an air conditioner is a spray cleaning function.
  • the spray cleaning function is to spray water onto the heat exchanger of the air conditioner and clean the heat exchanger by flushing with running water.
  • the implementation is that the cleaning method process of this application runs before the spray cleaning function is executed, that is, after the user selects the spray cleaning function, the cleaning method process of this application is first controlled to kill bacteria and other microorganisms, and then the spray cleaning function is executed.
  • the cleaning function so that the running water can not only wash away dust, oil and other dirt, but also wash away the killed microorganisms on the heat exchanger.
  • the indoor heat exchanger is mainly used as an example of the target heat exchanger.
  • the air conditioner adjusts the refrigerant flow direction in the system to be consistent with the refrigerant flow direction of the heating mode, so that the high temperature refrigerant discharged from the compressor It first flows through the indoor heat exchanger to use the heat of the high-temperature refrigerant to heat the indoor heat exchanger, and heat the surface temperature of the indoor heat exchanger to the first sterilization temperature for high-temperature sterilization.
  • the value range of the first sterilization temperature is greater than or equal to 60°C.
  • the first sterilization temperature is 65°C.
  • the high temperature sterilization conditions include:
  • T e is the coil temperature of the indoor heat exchanger.
  • the temperature of the coil position of the indoor heat exchanger is used as a parameter to measure the surface temperature of the indoor heat exchanger.
  • T1 sterilization is the first sterilization temperature
  • t high temperature is the duration of high temperature sterilization
  • t1 is high temperature sterilization Duration threshold.
  • the value range of t1 is greater than or equal to 30 minutes. According to test results, when the surface temperature of the indoor heat exchanger is greater than or equal to the first sterilization temperature and the duration is greater than or equal to 30 minutes, the actual sterilization effect is better. In this embodiment, t1 is 35 minutes.
  • the air conditioner is provided with a temperature sensor at the coil position of the indoor heat exchanger, and the temperature sensor can be used to detect the real-time temperature of the coil of the indoor heat exchanger; at the same time, the air conditioner is also provided with a temperature sensor for statistics of the indoor heat exchanger.
  • a timing module for the duration of high temperature sterilization which starts timing when the coil temperature of the indoor heat exchanger in the process of performing step S101 is greater than or equal to the first sterilization temperature.
  • the timing module is cleared.
  • the air conditioner adjusts the flow direction of the refrigerant in the system to be consistent with the flow direction of the refrigerant in the cooling mode, so that the high-temperature refrigerant discharged from the compressor flows through the outdoor heat exchanger first Then, the low-temperature refrigerant after throttling and depressurization is input into the indoor heat exchanger to use the "cold capacity" of the low-temperature refrigerant to absorb the heat of the indoor heat exchanger, cool the indoor heat exchanger, and reduce the surface temperature of the indoor heat exchanger To the second sterilization temperature, perform quick-cooling sterilization.
  • the value range of the second sterilization temperature is less than or equal to 5°C.
  • the surface temperature of the indoor heat exchanger is relatively high. Experiments show that the rapid change of temperature from high to low can also effectively inactivate microorganisms, thereby achieving the effect of enhanced sterilization.
  • the second sterilization temperature is 5°C.
  • step S102 if the rapid-cooling sterilization condition is satisfied, the rapid-cooling sterilization is controlled to exit.
  • the rapid cold sterilization conditions include:
  • T2 sterilization is the second sterilization temperature
  • t rapid cooling is the duration of rapid cooling sterilization
  • t2 is the rapid cooling sterilization duration threshold.
  • the value range of t2 is greater than or equal to 10 minutes.
  • t2 is 10 minutes.
  • the timing module can also be used to count the duration of the rapid cooling sterilization of the indoor heat exchanger.
  • the timing module starts timing when the coil temperature of the indoor heat exchanger is less than or equal to the second sterilization temperature during the execution of step S102.
  • the timer is cleared after confirming that the conditions for rapid cooling sterilization are met.
  • step S102 if the rapid cooling sterilization condition is not satisfied, the rapid cooling sterilization process of step S102 is continued to be maintained.
  • the method for cleaning the air conditioner provided by the embodiments of the present disclosure can kill bacteria growing on the heat exchanger of the air conditioner through the two processes of high temperature sterilization and rapid cooling sterilization successively. Kill bacteria, while rapid-cooling sterilization uses rapid changes in temperature from high to low to kill bacteria; this method can effectively reduce bacteria, molds and other microorganisms on the heat exchanger, thereby improving the cleanliness of the air conditioner.
  • the control process of the indoor fan in the high-temperature sterilization stage is divided into two stages.
  • the indoor fan In the previous stage, the indoor fan is in a shutdown state.
  • the high-temperature refrigerant discharged from the compressor starts to be input to the indoor heat exchanger, in order to make the indoor heat exchanger heat up as soon as possible , Reduce the loss of heat to the indoor environment, so the indoor fan is controlled to stop; the indoor fan is in a low-speed state (low wind speed) in the latter stage, and the surface temperature of the indoor heat exchanger after the previous stage is close to or reaches the first stage.
  • Sterilization temperature at this time, by controlling the indoor fan to run at a low speed, heat can be conducted inside the indoor unit, and the temperature of other parts of the indoor unit can be raised, so as to achieve the effect of high-temperature sterilization of other parts of the air conditioner.
  • the front and back stages of the indoor fan can be set with a fixed duration. For example, if the duration of the high temperature sterilization stage is 35 minutes, the duration of the previous stage is set to 5 minutes, and the duration of the latter stage is set to 30 minutes. ; In this way, by counting the duration of each stage, the state switching of the indoor fan can be controlled when the time requirement is met.
  • the switching between the front and back stages of the indoor fan may be determined according to the temperature of the coil.
  • the temperature sensor detects the coil temperature of the indoor heat exchanger in real time.
  • the indoor fan is controlled to be in a shutdown state, which is In the previous stage, the indoor fan is always in a shutdown state; and after the coil temperature reaches the first sterilization temperature, the stage is switched, and the indoor fan is switched to a low-speed state.
  • this embodiment can more accurately realize the two-stage state switching of the indoor fan, and ensure the heating rate of the indoor heat exchanger and the sterilization effect of other parts of the indoor unit.
  • the switching between the front and back stages of the indoor fan may be determined according to the initial frequency of the compressor.
  • the initial frequency of the compressor can affect the temperature of the refrigerant discharged from it, which in turn affects the heating rate of the indoor heat exchanger and the time required for state switching of the indoor unit.
  • the initial frequency of the compressor is obtained before the air conditioner performs the high-temperature sterilization stage of step S101.
  • the duration of the first stage is the first duration; and when the initial frequency is less than or When it is equal to the set frequency threshold, the duration of the first stage is the second duration, where the second duration is greater than the first duration. That is, the higher the initial frequency of the compressor and the higher the temperature of the discharged refrigerant, the shorter the time required for the surface temperature of the indoor heat exchanger to reach the first sterilization temperature. Therefore, in this embodiment, the state switching of the indoor fan is controlled according to the initial frequency of the compressor, which can also achieve precise control and guarantee the heating rate.
  • the guide plate of the indoor unit is in a closed state or a slightly opened state, so as to reduce the dissipation of heat inside the indoor unit from the air outlet to the indoor environment.
  • the guide plate of the indoor unit can be controlled to open at a slightly larger angle, so that part of the refrigerant heat during the high-temperature sterilization process can still be continuously transported to the indoor environment, avoiding the indoor environment temperature during the cleaning process Reduce the discomfort to users.
  • the parameters of the high temperature sterilization stage include the first high temperature sterilization parameters obtained according to the outdoor ambient temperature, where the first high temperature sterilization parameters include the first outdoor machine speed of the outdoor fan and the first opening degree of the throttling device.
  • the outdoor heat exchanger corresponding to the outdoor fan is in a heat-absorbing state, and the heat exchange temperature difference between the outdoor ambient temperature and the outdoor heat exchanger can affect the heat absorption efficiency of the outdoor heat exchanger , Which in turn affects the heating effect of the indoor heat exchanger; here, the outdoor ambient temperature has a negative correlation with the outdoor fan, that is, the lower the outdoor ambient temperature, the greater the heat exchange temperature difference between it and the outdoor heat exchanger Larger, the greater the amount of heat exchange air required to ensure the heat absorption effect. Therefore, in this implementation, the rotation speed of the outdoor fan is adjusted according to the outdoor environment temperature, so as to enhance the heat absorption efficiency of the outdoor heat exchanger, thereby increasing the high-temperature sterilization effect.
  • the air conditioner is preset with a first association relationship between the outdoor ambient temperature and the rotation speed of the outdoor machine, and the first association relationship includes a one-to-one correspondence between the outdoor ambient temperature and the rotation speed of the outdoor machine. Therefore, the rotation speed of the outdoor machine corresponding to the current outdoor ambient temperature can be obtained by searching for the correlation, and then the outdoor fan can be controlled to run at the rotation speed of the outdoor machine as the first outdoor machine speed.
  • the frequency of the compressor can also affect the heat absorption efficiency of the outdoor heat exchanger.
  • the higher the operating frequency of the compressor the greater the amount of refrigerant discharged, and therefore the greater the amount of refrigerant flowing into the outdoor heat exchanger for heat exchange. Therefore, in this embodiment, the outdoor ambient temperature and the compressor frequency are used together to determine the temperature of the outdoor fan in the high-temperature sterilization stage.
  • Table 1 shows an optional outdoor ambient temperature Tao and the compressor frequency Correspondence between f and the rotation speed of the outdoor fan:
  • the rotation speed gears of the outdoor fan are set into 7 levels, and the rotation speed increases in sequence;
  • Table 1 shows the rotation speed gears of the outdoor fan corresponding to different outdoor ambient temperature and frequency combinations.
  • the rotation speed control of the outdoor fan in the high-temperature sterilization stage can be determined by looking up the above table.
  • the outdoor heat exchanger since the outdoor heat exchanger is in a heat-absorbing state, the outdoor heat exchanger itself is also in a lower temperature state. If the outdoor ambient temperature is also a lower temperature condition, the outdoor heat exchanger is easy to Frosting occurs. For example, when the cleaning method process of this application is run in the heating condition in winter, the outdoor environment temperature is very low, and the outdoor heat exchanger is prone to gradually condense frost during the high-temperature sterilization stage, which affects the outdoor heat exchanger from the external environment. The heat absorption efficiency.
  • the control of the throttling device in the high-temperature sterilization stage in this application is mainly to adjust the opening degree of the throttling device according to the temperature condition of the outdoor environment; In this way, the refrigerant flowing from the indoor heat exchanger into the outdoor heat exchanger can also maintain a higher temperature, so as to use the remaining refrigerant heat to delay the frosting speed of the outdoor heat exchanger;
  • the throttling device is adjusted with a lower opening degree, so that the temperature and pressure of the refrigerant after throttling are lower, thereby improving the heat exchange efficiency between the refrigerant and the external environment.
  • the air conditioner is preset with a first correlation relationship between the outdoor ambient temperature and the opening degree of the throttling device, and the first correlation relationship includes a one-to-one correspondence between the outdoor ambient temperature and the opening degree. Therefore, the opening degree corresponding to the current outdoor ambient temperature can be obtained by searching the association relationship, and then the throttle device can be controlled to turn on the opening degree as the first opening degree.
  • Table 2 shows the correlation between the outdoor ambient temperature and the opening degree of the throttling device in an optional embodiment.
  • the opening control of the throttling device in the high-temperature sterilization stage can be determined by looking up the above table.
  • the outdoor unit of the air conditioner is provided with a temperature sensor, and the temperature sensor can be used to detect the outdoor ambient temperature used to obtain the first high temperature sterilization parameter.
  • the high-temperature sterilization stage further includes acquiring a second high-temperature sterilization parameter according to the temperature of the indoor coil, and the second high-temperature sterilization parameter includes the frequency of the compressor.
  • one of the keys to the high-temperature sterilization stage is that the indoor heat exchanger can reach and maintain the first sterilization temperature. Since the high-temperature refrigerant discharged from the compressor flows to the indoor heat exchanger first, The control of the compressor in the high-temperature sterilization stage is mainly determined according to the temperature of the coil of the indoor heat exchanger.
  • the compressor when the coil temperature of the indoor heat exchanger is lower than the first sterilization temperature, the compressor is controlled to run at a first frequency with a larger value to increase the amount of high-temperature refrigerant discharged into the indoor heat exchanger and the temperature of the refrigerant, Speed up the indoor heat exchanger to heat up to the first sterilization temperature; and when the coil temperature of the indoor heat exchanger is greater than or equal to the first sterilization temperature, control the compressor to run at a second frequency that is less than the first frequency.
  • the indoor heat exchanger is maintained at the first sterilization temperature, the problem of triggering high temperature protection due to the continuous heating of the indoor heat exchanger can also be avoided, and the operating power consumption of the compressor can be reduced, which is energy-saving and environmentally friendly.
  • the high-temperature sterilization stage also includes the frequency reduction rate of the compressor when the surface temperature of the target heat exchanger is greater than or equal to the set safe temperature threshold obtained according to the indoor coil temperature, and the set safe temperature threshold is greater than the first sterilization temperature .
  • the safe temperature threshold is the critical value at which the heat exchanger is within the safe temperature range. When the current temperature of the heat exchanger exceeds the safe temperature range, it will endanger the operation of the air conditioner, prone to malfunctions, fires, etc.
  • the indoor coil temperature of the indoor heat exchanger is compared with the set safe temperature threshold, and the compressor is controlled to reduce the frequency according to the comparison result to reduce the amount of refrigerant input to the heat exchanger and the temperature of the refrigerant, so that the heat exchanger can Gradually decrease the temperature again to within the safe temperature range.
  • the air conditioner is preset with a second correlation between the indoor coil temperature and the frequency reduction rate, and the preset second correlation includes the corresponding relationship between the indoor coil temperature and the frequency reduction rate.
  • the present application divides the set safe temperature threshold into three threshold gears (a first threshold, a second threshold, and a third threshold), and the temperature values of the three threshold gears gradually increase; Among them, when the indoor coil temperature is less than or equal to the first threshold, the current operating state of the heat exchanger is normal, and the current compressor operating frequency is maintained; and when the indoor coil temperature is greater than the first threshold and less than or equal to the second threshold, then There is an abnormality in the heat exchanger. At this time, the compressor will decrease the frequency at the first decrease rate with a smaller value.
  • the compressor performs frequency reduction at a second frequency reduction rate greater than the first frequency reduction rate to speed up the cooling operation of the heat exchanger and speed up the heat output reduction operation; when the indoor coil temperature is greater than the third threshold , The abnormal condition of the heat exchanger is very serious.
  • the compressor is controlled to stop and the refrigerant input to the heat exchanger is stopped.
  • the four-way valve switches and maintains a valve position that allows the refrigerant to flow in a direction consistent with the heating mode.
  • the indoor fan runs at a higher speed than the high-temperature sterilization stage during the rapid-cooling sterilization stage, such as mid-range speed, high-end speed, etc.; during the rapid-cooling sterilization stage, the refrigerant flows in the same direction as the cooling mode and is input to the indoor heat exchanger.
  • the refrigerant is a low-temperature refrigerant. Because the entire indoor unit is at a higher temperature during the previous high-temperature sterilization stage, in order to reduce the temperature of the indoor heat exchanger in a short period of time, the temperature of the indoor heat exchanger can be heated rapidly.
  • the effect of the change is that this application increases the speed of the indoor fan to speed up the heat exchange speed between the hot air inside the indoor unit and the low-temperature refrigerant, and also speeds up the discharge of hot air to the indoor environment, so that the indoor heat exchanger can cool down To below the second sterilization temperature.
  • the speed control of the indoor fan in the rapid cooling sterilization stage may also be determined according to the temperature of the indoor coil.
  • the real-time temperature sensor is used to detect the coil temperature of the indoor heat exchanger, and the indoor fan is controlled before the coil temperature is lowered to the second sterilization temperature It is in the mid-range speed state, and after the coil temperature drops to the second sterilization temperature, the indoor fan is switched to a low speed state or a shutdown state.
  • This control method can increase the temperature and speed of the indoor heat exchanger during the rapid cooling and sterilization stage, thereby enhancing the enhanced sterilization effect.
  • the guide plate of the indoor unit is slightly opened, thereby speeding up the discharge of hot air from the indoor unit and improving the cooling and rapid cooling.
  • the opening angle of the guide plate of the indoor unit can be further adjusted.
  • the guide plate of the indoor unit in the heating working condition, can be controlled to open at a slightly larger angle, so that the hot air can be More discharge into the indoor environment, which improves the utilization of the waste heat in the high temperature sterilization stage; while in the refrigeration mode, the guide plate of the indoor unit is controlled to send air upwards to avoid the hot air blowing directly on the user, and improve the user Experience.
  • the rapid cooling sterilization stage includes a first rapid cooling sterilization parameter obtained according to the outdoor ambient temperature, wherein the first rapid cooling sterilization parameter includes the second outdoor machine speed of the outdoor fan and the first frequency of the compressor.
  • the outdoor heat exchanger corresponding to the outdoor fan is in a state of heat release, and the heat exchange temperature difference between the outdoor ambient temperature and the outdoor heat exchanger can affect the heat release efficiency of the outdoor heat exchanger , Which in turn affects the cooling and rapid cooling effect of the indoor heat exchanger;
  • the outdoor ambient temperature is positively correlated with the outdoor fan, that is, the higher the outdoor ambient temperature, the higher the heat exchange temperature difference between it and the outdoor heat exchanger.
  • the smaller the amount the greater the amount of heat exchange air required to ensure the heat absorption effect. Therefore, in the present embodiment, the rotation speed of the outdoor fan is adjusted according to the outdoor environment temperature, thereby enhancing the heat dissipation efficiency of the outdoor heat exchanger, thereby increasing the rapid cooling sterilization effect.
  • the air conditioner is preset with a third correlation between the outdoor ambient temperature and the rotation speed of the outdoor machine, and the first correlation includes a one-to-one correspondence between the outdoor ambient temperature and the rotation speed of the outdoor machine. Therefore, the rotation speed of the outdoor machine corresponding to the current outdoor ambient temperature can be obtained by searching for the correlation, and then the outdoor fan can be controlled to operate at the rotation speed of the outdoor machine as the second outdoor machine speed.
  • the frequency of the compressor can also affect the heat release efficiency of the outdoor heat exchanger.
  • the higher the operating frequency of the compressor the greater the amount of refrigerant discharged, and therefore the greater the amount of refrigerant flowing into the outdoor heat exchanger for heat exchange. Therefore, in this embodiment, the outdoor ambient temperature and the compressor frequency are used together to determine the temperature of the outdoor fan in the rapid cooling sterilization stage.
  • Table 3 shows an optional outdoor ambient temperature Tao and the compressor Correspondence between frequency f and outdoor fan speed:
  • the speed gear setting of the outdoor fan is the same as in the previous embodiment.
  • the speed control of the outdoor fan in the rapid cooling sterilization stage can be determined by looking up the above table.
  • one of the keys to the rapid-cooling sterilization stage is to lower the indoor heat exchanger in a short time and maintain it below the second sterilization temperature; here, in the rapid-cooling sterilization stage, the compressor is
  • the high-temperature refrigerant discharged from the compressor first flows to the outdoor heat exchanger, and the outdoor environment temperature can affect the heat dissipation efficiency of the refrigerant in the outdoor heat exchanger and the outdoor environment, and then affect the temperature of the refrigerant flowing into the indoor heat exchanger.
  • the frequency of the compressor is obtained according to the outdoor ambient temperature, so that the adjusted compressor frequency can meet the requirement of rapidly cooling the indoor heat exchanger to the second sterilization temperature.
  • the third association relationship further includes a one-to-one correspondence between the outdoor ambient temperature and the compressor frequency. Therefore, the compressor frequency corresponding to the current outdoor ambient temperature can be obtained by searching the association relationship.
  • the compressor when the outdoor environment temperature is greater than the first outer ring temperature threshold, the compressor is controlled to run at a third frequency with a larger value to increase the discharged refrigerant temperature and refrigerant quantity, and increase the heat of the refrigerant in the outdoor heat exchanger and the external environment.
  • Exchange efficiency when the outdoor environment temperature is less than the first outer ring temperature threshold, the heat exchange efficiency between the refrigerant and the outdoor environment is higher at this time, and the compressor is controlled to run at a fourth frequency that is less than the third frequency, which can effectively reduce the compressor Power consumption during the rapid cold sterilization phase.
  • the rapid cooling sterilization stage further includes a second rapid cooling sterilization parameter obtained according to the indoor ambient temperature, wherein the second rapid cooling sterilization parameter includes a second opening degree of the throttling device.
  • the indoor fan in the rapid-cooling sterilization stage runs at a mid-range speed. Therefore, the indoor ambient temperature will affect the temperature of the indoor heat exchanger to a certain extent. Therefore, in order to ensure the rapid-cooling sterilization effect, this implementation
  • the opening degree of the throttling device is adjusted to change the temperature and pressure of the low-temperature refrigerant flowing into the indoor heat exchanger, thereby reducing the adverse effect of the indoor environment temperature on the rapid cooling sterilization effect.
  • the air conditioner presets a fourth association relationship, and the preset fourth association relationship includes the corresponding relationship between the indoor ambient temperature and the opening degree.
  • Table 4 shows the correspondence between the indoor ambient temperature Tp and the opening of the throttle device in an optional implementation.
  • the opening control of the throttling device for each stage of rapid cooling can be determined by looking up the above table.
  • the electric auxiliary heating device when the operation of step S101 is performed, can also be controlled to perform auxiliary heating, so that the electric auxiliary heating device can be used to speed up the temperature rise of the indoor unit and shorten the indoor heat exchanger to reach the first temperature. The time required for the bacteria temperature.
  • the refrigerant flow direction needs to be switched from the heating flow direction to the cooling flow direction, so in order to ensure the stability of the internal system of the air conditioner during the switching process
  • This application controls the execution of the voltage stabilization operation, where the voltage stabilization operation includes turning on the throttling device at the maximum opening and reducing the frequency of the compressor, and after it is determined that the duration of the stabilization operation is greater than or equal to the set stabilization period, it can be Start rapid cold sterilization.
  • the method for cleaning the air conditioner of the present application further includes controlling the activation of the ultraviolet sterilization device when the surface temperature of the target heat exchanger is heated to the first sterilization temperature.
  • the ultraviolet sterilization device can use ultraviolet light to kill microorganisms in the indoor unit, thereby improving the overall sterilization effect.
  • an embodiment of the present disclosure provides a device for cleaning an air conditioner, which includes a high-temperature sterilization module 31 and a quick-cooling sterilization module 32.
  • the high-temperature sterilization module 31 is configured to respond to the cleaning instruction to heat the surface temperature of the target heat exchanger to the first sterilization temperature for high-temperature sterilization;
  • the rapid-cooling sterilization module 32 is configured to perform high-temperature sterilization after meeting the high-temperature sterilization conditions , Reduce the surface temperature of the target heat exchanger to the second sterilization temperature, and perform rapid cooling sterilization.
  • Using the device for cleaning the air conditioner provided by the embodiments of the present disclosure is beneficial to reduce the bacteria, molds and other microorganisms on the heat exchanger, thereby improving the cleanliness of the inside of the air conditioner.
  • an embodiment of the present disclosure provides an apparatus for cleaning an air conditioner, including a processor (processor) 100 and a memory (memory) 101.
  • the device may further include a communication interface (Communication Interface) 102 and a bus 103.
  • the processor 100, the communication interface 102, and the memory 101 can communicate with each other through the bus 103.
  • the communication interface 102 can be used for information transmission.
  • the processor 100 may call the logic instructions in the memory 101 to execute the method for cleaning the air conditioner in the foregoing embodiment.
  • the above-mentioned logical instructions in the memory 101 can be implemented in the form of a software functional unit and when sold or used as an independent product, they can be stored in a computer readable storage medium.
  • the memory 101 can be used to store software programs and computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure.
  • the processor 100 executes functional applications and data processing by running the program instructions/modules stored in the memory 101, that is, implements the method for cleaning the air conditioner in the foregoing embodiment.
  • the memory 101 may include a program storage area and a data storage area.
  • the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of a terminal device, and the like.
  • the memory 101 may include a high-speed random access memory, and may also include a non-volatile memory.
  • An embodiment of the present disclosure provides an air conditioner, including the above-mentioned device for cleaning the air conditioner.
  • the embodiment of the present disclosure provides a computer-readable storage medium that stores computer-executable instructions, and the computer-executable instructions are configured to execute the above-mentioned method for cleaning an air conditioner.
  • the embodiments of the present disclosure provide a computer program product, the computer program product includes a computer program stored on a computer-readable storage medium, the computer program includes program instructions, when the program instructions are executed by a computer, the computer program The computer executes the above-mentioned method for cleaning the air conditioner.
  • the aforementioned computer-readable storage medium may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
  • the technical solutions of the embodiments of the present disclosure can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which can be a personal computer, a server, or a network). Equipment, etc.) execute all or part of the steps of the method described in the embodiments of the present disclosure.
  • the aforementioned storage medium may be a non-transitory storage medium, including: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks, etc.
  • the term “and/or” as used in this application refers to any and all possible combinations of one or more of the associated lists.
  • the term “comprise” and its variants “comprises” and/or including (comprising) and the like refer to the stated features, wholes, steps, operations, elements, and/or The existence of components does not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components, and/or groups of these. If there are no more restrictions, the element defined by the sentence “including a" does not exclude the existence of other same elements in the process, method, or device that includes the element.
  • each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.
  • the relevant parts can be referred to the description of the method parts.
  • the disclosed methods and products can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units may only be a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined. Or it can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment.
  • the functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • each block in the flowchart or block diagram may represent a module, program segment, or part of the code, and the module, program segment, or part of the code contains one or more functions for realizing the specified logical function.
  • Executable instructions may also occur in a different order from the order marked in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, depending on the functions involved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Mathematical Physics (AREA)
  • Fuzzy Systems (AREA)
  • Physics & Mathematics (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Procédé de nettoyage de climatiseur. Le procédé comprend : en réponse à une instruction de nettoyage, le chauffage de la température de surface d'un échangeur de chaleur cible à une première température de stérilisation pour une stérilisation à haute température ; et lorsqu'une condition de stérilisation à haute température est satisfaite, le refroidissement de la température de surface de l'échangeur de chaleur cible à une seconde température de stérilisation pour une stérilisation à refroidissement rapide. Au moyen du procédé, l'élevage de bactéries sur un échangeur de chaleur d'un climatiseur peut être tué au moyen de deux procédés successifs, c'est-à-dire une stérilisation à haute température et une stérilisation à refroidissement rapide, la stérilisation à haute température tuant les bactéries en utilisant une température relativement élevée, et la stérilisation à refroidissement rapide tuant les bactéries en utilisant un changement soudain d'une température chaude à froide, c'est-à-dire d'une température élevée à basse. Des micro-organismes tels que des bactéries et du mildiou sur l'échangeur de chaleur peuvent être efficacement réduits, ce qui permet d'augmenter la propreté de l'intérieur du climatiseur. L'invention concerne en outre un climatiseur.
PCT/CN2020/126871 2020-03-03 2020-11-05 Procédé de nettoyage de climatiseur et climatiseur WO2021174896A1 (fr)

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