WO2019158087A1 - Procédé de commande d'auto-nettoyage pour climatiseur - Google Patents

Procédé de commande d'auto-nettoyage pour climatiseur Download PDF

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Publication number
WO2019158087A1
WO2019158087A1 PCT/CN2019/074970 CN2019074970W WO2019158087A1 WO 2019158087 A1 WO2019158087 A1 WO 2019158087A1 CN 2019074970 W CN2019074970 W CN 2019074970W WO 2019158087 A1 WO2019158087 A1 WO 2019158087A1
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Prior art keywords
indoor unit
self
value
cleaning mode
air conditioner
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PCT/CN2019/074970
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English (en)
Chinese (zh)
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许文明
王飞
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青岛海尔空调器有限总公司
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Publication of WO2019158087A1 publication Critical patent/WO2019158087A1/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
    • F24F11/62—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
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/22—Cleaning ducts or apparatus

Definitions

  • the invention belongs to the technical field of air conditioners, and in particular provides a self-cleaning control method for an air conditioner.
  • the air conditioner is a device capable of cooling/heating indoors. As time goes by, the dust on the indoor unit and the outdoor unit of the air conditioner will gradually increase, and the accumulation of ash will breed a large amount of bacteria, especially indoors. When the air flows through the indoor unit, it will carry a lot of dust and bacteria, so it is necessary to clean the air conditioner in time.
  • the cleaning method of the air conditioner includes manual cleaning and self-cleaning of the air conditioner. It is time-consuming and labor-intensive to use manual cleaning. It is necessary to disassemble and clean the various components of the air conditioner, and the components need to be re-cleaned after the cleaning is completed. Assembled. Therefore, many air conditioners of the present invention have adopted a self-cleaning method.
  • a method of self-cleaning control of an air conditioner is disclosed in the patent of CN107525209A. Specifically, the control method includes detecting the current operation mode of the air conditioner.
  • the current operating mode of the air conditioner is the uncooled mode, and the air conditioner is adjusted to the cooling mode; the speed of the motor of the indoor unit fan of the air conditioner and the first current value of the motor at the speed are detected; the first current of the motor at the speed is detected The value is compared with the first preset current value at the rotational speed. If the first current value is less than or equal to the first preset current value, the self-cleaning mode of the air conditioner is turned on, and the self-cleaning process of the indoor heat exchanger is performed. That is to say, in the above patent, it is determined whether the self-cleaning of the indoor unit is performed by the fan current of the indoor unit.
  • the indoor opportunity of the air conditioner generates condensation, and the indoor unit
  • the condensation will affect the fan current of the indoor unit, that is, the indoor unit condensation will reduce the fan current of the indoor unit. Therefore, if the single-condition of the indoor unit fan current is judged, the current reduction of the indoor unit cannot be determined. Whether it is due to the condensation of the air conditioner or the ash formation of the air conditioner. If the air conditioner is only caused by the condensation of the indoor unit, the fan current of the indoor unit is lowered, then the indoor unit may be unashed. The air conditioner still cleans the indoor unit, which causes waste of energy. From this, it can be seen that the self-cleaning mode is frequently performed by the air conditioner due to the single condition of the fan current of the indoor unit of the air conditioner.
  • the air conditioner includes an indoor unit
  • the self-cleaning control method includes: acquiring the coil temperature of the indoor unit and the dew point temperature of the air during the cooling operation of the air conditioner; acquiring the indoor unit within the preset time The plurality of fan current values; calculating an average value of the plurality of fan current values of the indoor unit; determining whether to perform the self-cleaning mode on the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, and the average value.
  • the step of "determining whether to perform the self-cleaning mode on the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, and the average value" includes: if the coil temperature of the indoor unit Below the dew point temperature of the air, the rate of change of the average value with respect to the standard current value is compared with the first preset value; based on the comparison result, it is determined whether the self-cleaning mode is performed on the indoor unit.
  • the step of “determining whether to perform the self-cleaning mode on the indoor unit according to the comparison result” includes: if the rate of change of the average value with respect to the standard current value is greater than the first preset value, Perform self-cleaning mode on the indoor unit.
  • the step of “determining whether to perform the self-cleaning mode on the indoor unit according to the comparison result” further includes: if the average rate of change with respect to the standard current value is not greater than the first preset value , the self-cleaning mode is not performed on the indoor unit.
  • the step of "determining whether to perform the self-cleaning mode on the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, and the average value" includes: if the coil temperature of the indoor unit If the dew point temperature is greater than or equal to the air, the rate of change of the average value with respect to the standard current value is compared with the second preset value; and according to the comparison result, it is determined whether the self-cleaning mode is performed on the indoor unit.
  • the step of “determining whether to perform a self-cleaning mode on the indoor unit according to the comparison result” includes: if the rate of change of the average value with respect to the standard current value is greater than the second preset value, Perform self-cleaning mode on the indoor unit.
  • the step of “determining whether to perform the self-cleaning mode on the indoor unit according to the comparison result” further includes: if the average rate of change with respect to the standard current value is not greater than the second preset value , the self-cleaning mode is not performed on the indoor unit.
  • the step of "determining whether to perform the self-cleaning mode on the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, and the average value" includes: if the coil temperature of the indoor unit Less than the dew point temperature of the air, the average value of the average of three consecutive preset times is compared with the first preset value; if the average of three consecutive preset times is relative to the standard current value If the rate of change is greater than the first preset value, performing a self-cleaning mode on the indoor unit; if at least one of the average values of the average of the three preset time periods relative to the standard current value is not greater than the first preset value , the self-cleaning mode is not performed on the indoor unit, and the change rate of the average value of the next three consecutive preset time periods with respect to the standard current value is continuously compared with the first preset value, and then according to the comparison result, it is determined whether The indoor unit performs a self-cleaning
  • the step of "determining whether to perform the self-cleaning mode on the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, and the average value" includes: if the coil temperature of the indoor unit If the dew point temperature is greater than or equal to the air, the rate of change of the average of the three preset time periods relative to the standard current value is compared with the second preset value; if the average value of the three consecutive preset times is relative to the standard If the rate of change of the current value is greater than the second preset value, the self-cleaning mode is performed on the indoor unit; if at least one of the average rate of the three consecutive preset times relative to the standard current value is not greater than the second pre-preparation If the value is set, the self-cleaning mode is not performed on the indoor unit, and the average value of the average of the next three consecutive preset time periods is compared with the second preset value of the standard current value, and then judged according to the comparison result
  • the self-cleaning control method further includes: performing a self-cleaning mode on the indoor unit if the running time of the air conditioner reaches a set time.
  • the air conditioner when the air conditioner is in the cooling operation, it is first determined whether the indoor unit generates condensation, and if the indoor unit generates condensation, the plurality of fan currents of the indoor unit are used. The rate of change of the average value relative to the standard current value is compared with the first preset value, and according to the comparison result, it is determined whether the self-cleaning mode is performed on the indoor unit; if the indoor unit does not generate condensation, the plurality of fans of the indoor unit are The rate of change of the average value of the current value with respect to the standard current value is compared with a second preset value, and based on the comparison result, it is determined whether the self-cleaning mode is performed on the indoor unit.
  • the air conditioner can enable the air conditioner to perform the self-cleaning mode under reasonable conditions, whether the condensation is generated or the condensation is not generated, that is, the coil temperature of the indoor unit through the introduction of the air conditioner. And the judgment condition of the dew point temperature of the air can avoid the situation in which the air conditioner is erroneously judged to be the ash of the air conditioner due to condensation of the indoor unit, and the self-cleaning mode is frequently executed to waste energy.
  • the average value of the current values of the plurality of fan currents in the three consecutive preset time periods may be compared with the first preset value, if The comparison results of the three preset times satisfy the conditions, so that the air conditioner performs the self-cleaning mode.
  • the average value of the current values of the plurality of fan currents in the three consecutive preset time periods may be compared with the second preset value. If the comparison result of the three preset times meets the conditions, the air conditioner is caused to perform the self-cleaning mode. With such a control method, it is possible to further reduce the possibility of misjudgment of the air conditioner, and the air conditioner does not frequently perform the self-cleaning mode due to misjudgment.
  • the present invention further provides a control mode for determining whether to execute the self-cleaning mode by whether the running time of the air conditioner reaches a set time, and by using such a control method, the present invention is used.
  • the indoor unit coil temperature sensor for detecting the coil temperature of the indoor unit and the air dew point temperature sensor for detecting the dew point temperature of the air are malfunctioning/damaged, and when the fan current of the indoor unit is detected to be malfunctioning, the operation of the air conditioner can still be performed.
  • the time is used to judge the timing of entering the self-cleaning mode, and it is avoided that the air conditioner cannot perform the self-cleaning mode by the first and second control modes, and the self-cleaning mode is not performed.
  • Figure 1 is a flow chart of the self-cleaning control method of the present invention
  • Figure 2 is a flow chart of an embodiment of the self-cleaning control method of the present invention.
  • Fig. 3 is a schematic block diagram of an air conditioner of the present invention.
  • the prior art air conditioner based on the background art judges that the air conditioner is frequently subjected to the self-cleaning mode due to misjudgment by judging the single condition of the indoor unit fan current.
  • the invention provides a self-cleaning control method for an air conditioner, which aims to enable the air conditioner to perform a self-cleaning mode under reasonable conditions, thereby avoiding the occurrence of air conditioner ashing due to condensation of the indoor unit due to condensation of the indoor unit. Frequent execution of the self-cleaning mode results in wasted energy.
  • the air conditioner of the present invention includes an indoor unit.
  • the self-cleaning control method of the present invention includes: Step S102, acquiring a coil temperature of the indoor unit and a dew point temperature of the air during the air conditioner cooling operation; Step S104: acquiring a plurality of fan current values of the indoor unit in a preset time; and step S106, calculating an average value of the plurality of fan current values of the indoor unit; and step S108, according to the coil temperature of the indoor unit, the dew point temperature of the air, and an average The value determines whether the self-cleaning mode is performed on the indoor unit.
  • the coil temperature of the indoor unit can be obtained by the indoor unit coil temperature sensor, and the dew point temperature of the air is obtained by the air dew point temperature sensor.
  • the fan current of the indoor unit can directly reflect the degree of ashing of the air conditioner, because the load of the fan is determined at a certain speed, and the load of the fan increases at the same speed, correspondingly, the fan current Decrease, this means that the wind resistance of the fan increases, that is to say, the ash on the indoor unit, and the more serious the ash is, the smaller the fan current is. Therefore, the degree of ash of the indoor unit of the air conditioner can be fully judged by the current of the fan. .
  • Steps S202 to S206 in Fig. 2 correspond to steps S102 to S106 in Fig. 1.
  • the step S108 (shown in FIG. 1) of "determining whether to perform the self-cleaning mode on the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, and the average value" includes: step S208, Determining whether the coil temperature of the indoor unit is less than the dew point temperature of the air; in step S210, if the coil temperature of the indoor unit is less than the dew point temperature of the air, comparing the rate of change of the average value with the standard current value with the first preset value; Based on the comparison result, it is judged whether or not the self-cleaning mode is performed on the indoor unit.
  • the step of "determining whether to perform the self-cleaning mode on the indoor unit according to the comparison result" includes: if the rate of change of the average value with respect to the standard current value is greater than the first preset value, performing a self-cleaning mode on the indoor unit (step S212); If the rate of change of the average value with respect to the standard current value is not greater than the first preset value, the self-cleaning mode is not performed on the indoor unit (step S230). It should be noted that, in the technical description of the present invention, “do not perform the self-cleaning mode” can be understood as not performing the self-cleaning mode immediately, that is, delaying the execution of the self-cleaning mode.
  • the air conditioner performs the self-cleaning mode on the indoor unit.
  • the first preset value may also be other values, and a person skilled in the art may flexibly set a specific value of the first preset value in an actual application, as long as the demarcation point determined by the first preset value can be determined in the indoor unit. Whether the indoor unit is ashed in the case where condensation occurs.
  • the step of "determining whether to perform the self-cleaning mode to the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, and the average value" includes: if the coil temperature of the indoor unit Less than the dew point temperature of the air, the average value of the average of three consecutive preset times is compared with the first preset value; if the average of three consecutive preset times is relative to the standard current value If the rate of change is greater than the first preset value, performing a self-cleaning mode on the indoor unit; if at least one of the average values of the average of the three preset time periods relative to the standard current value is not greater than the first preset value , the self-cleaning mode is not performed on the indoor unit, and the change rate of the average value of the next three consecutive preset time periods with respect to the standard current value is continuously compared with the first preset value, and then according to the comparison result, it is determined whether The indoor unit performs a self-cleaning mode.
  • the step of "determining whether to perform the self-cleaning mode on the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, and the average value" includes: step S220, if the coil temperature of the indoor unit If the dew point temperature is greater than or equal to the air, the rate of change of the average value with respect to the standard current value is compared with the second preset value; and according to the comparison result, it is determined whether the self-cleaning mode is performed on the indoor unit.
  • the step of determining whether to perform the self-cleaning mode on the indoor unit according to the comparison result includes: if the rate of change of the average value with respect to the standard current value is greater than the second preset value, performing a self-cleaning mode on the indoor unit (step S222); If the rate of change of the average value with respect to the standard current value is not greater than the second preset value, the self-cleaning mode is not performed on the indoor unit (step S230). In this way, firstly, by comparing the coil temperature of the indoor unit with the dew point temperature of the air, it is determined whether or not the indoor unit of the air conditioner has condensation.
  • the specific value of the second preset value can be set to be slightly lower, for example, the second preset value is set to 0.1, that is, When the average value of the current values of the plurality of fans is greater than 0.1 with respect to the standard current value, the air conditioner performs the self-cleaning mode on the indoor unit.
  • the second preset value may also be other values, and a person skilled in the art may flexibly set a specific value of the second preset value in an actual application, as long as the demarcation point determined by the second preset value can be determined in the indoor unit. Whether the indoor unit is ashed without condensation.
  • the first preset value should always be set higher than the second preset value.
  • the step of "determining whether to perform the self-cleaning mode to the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, and the average value" includes: if the coil temperature of the indoor unit If the dew point temperature is greater than or equal to the air, the rate of change of the average of the three preset time periods relative to the standard current value is compared with the second preset value; if the average value of the three consecutive preset times is relative to the standard If the rate of change of the current value is greater than the second preset value, the self-cleaning mode is performed on the indoor unit; if at least one of the average rate of the three consecutive preset times relative to the standard current value is not greater than the second pre-preparation If the value is set, the self-cleaning mode is not performed on the indoor unit, and the average value of the average of the next three consecutive preset time periods is compared with the second preset value of the standard current value, and then judged according to the comparison result.
  • the air conditioner judges whether or not the operation of executing the self-cleaning mode is more accurate, and further avoids the occurrence of erroneous judgment of the air conditioner, resulting in frequent occurrence of self-cleaning.
  • the standard current value can be measured before the air conditioner is shipped from the factory, that is, the air conditioner is in a completely clean state, the air conditioner is operated under standard working conditions, and the air conditioner is operated in a standard working condition. , the standard current value corresponding to the fan of the indoor unit at different speeds is determined.
  • the standard current value may also be an average value calculated based on the obtained plurality of fan current values of the indoor unit during the first preset time of the air conditioner cooling operation.
  • the preset time is not limited to a daily time, and may be a quarterly, an annual, or an arbitrarily set period of time.
  • a person skilled in the art may flexibly set the duration of the preset time in an actual application, as long as the setting is performed.
  • the average value calculated by the plurality of fan current values in the predetermined preset time can be compared with the standard current value, so that the air conditioner can perform the self-cleaning mode on the indoor unit.
  • the self-cleaning control method of the present invention further comprises: performing a self-cleaning mode on the indoor unit if the running time of the air conditioner reaches a set time.
  • the setting time can be set experimentally by a person skilled in the art, and the setting time can also be set by an empirical method, as long as the demarcation point determined by the set time can enable the air conditioner to perform the self-cleaning mode.
  • the set time can be 10h (hours), that is, when the running time of the air conditioner reaches 10h, the air conditioner automatically performs the self-cleaning mode immediately.
  • the present invention also provides an air conditioner 100 including an indoor unit 120 and an outdoor unit 110.
  • the indoor unit 120 is provided with a fan 122 and its current detecting device 121 and a heat exchanger 124 (which includes a coil) and a coil temperature sensor 123.
  • the indoor unit 120 also has a dew point temperature sensor 125 for detecting the air dew point temperature.
  • the air conditioner 100 can adopt the self-cleaning control method described in any of the above embodiments, so that the air conditioner can perform the self-cleaning mode under reasonable conditions whether the air conditioner generates condensation or does not generate condensation. To avoid the waste of energy in the air conditioner.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
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  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

La présente invention se rapporte au domaine technique des climatiseurs et vise à résoudre un problème dans l'état de la technique dans lequel un climatiseur effectue une détermination en se basant sur une condition unique, à savoir une valeur du courant d'un ventilateur dans une unité d'intérieur et, par conséquent, il est probable qu'il effectue fréquemment des opérations d'auto-nettoyage en raison d'une détermination erronée. L'invention concerne un procédé de commande d'auto-nettoyage pour un climatiseur comprenant une unité d'intérieur, comprenant les étapes suivantes : lorsque le climatiseur effectue une opération de refroidissement, acquérir une température d'une bobine dans l'unité d'intérieur et une température de point de rosée de l'air ; acquérir de multiples valeurs du courant d'un ventilateur dans l'unité d'intérieur au sein d'une période prédéfinie ; effectuer un calcul pour obtenir une valeur moyenne des multiples valeurs du courant du ventilateur dans l'unité d'intérieur ; et déterminer, en fonction de la température de la bobine dans l'unité d'intérieur, de la température de point de rosée de l'air et de la valeur moyenne, s'il faut ou non amener l'unité d'intérieur à effectuer une opération d'auto-nettoyage. La présente invention permet à un climatiseur d'effectuer des opérations d'auto-nettoyage dans des conditions raisonnables, à la fois lorsqu'il y a condensation et lorsqu'il n'y a pas de condensation, et peut empêcher le climatiseur de gaspiller de l'énergie.
PCT/CN2019/074970 2018-02-14 2019-02-13 Procédé de commande d'auto-nettoyage pour climatiseur WO2019158087A1 (fr)

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CN201810152136.2 2018-02-14
CN201810152136.2A CN108131801B (zh) 2018-02-14 2018-02-14 用于空调器的自清洁控制方法

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CN110631172A (zh) * 2018-06-21 2019-12-31 青岛海尔空调器有限总公司 用于空调器的控制方法
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CN110631170B (zh) * 2018-06-21 2021-04-20 青岛海尔空调器有限总公司 用于空调器的控制方法
CN110631222A (zh) * 2018-06-21 2019-12-31 青岛海尔空调器有限总公司 用于空调器的控制方法及空调器
CN110631168A (zh) * 2018-06-21 2019-12-31 青岛海尔空调器有限总公司 用于空调器的控制方法及空调器
CN110631173B (zh) * 2018-06-21 2021-06-01 青岛海尔空调器有限总公司 用于空调器的控制方法及空调器
CN110631223A (zh) * 2018-06-21 2019-12-31 青岛海尔空调器有限总公司 用于空调器的控制方法
CN109099550A (zh) * 2018-06-21 2018-12-28 青岛海尔空调器有限总公司 用于空调器的控制方法及空调器
CN110631225B (zh) * 2018-06-21 2021-06-29 青岛海尔空调器有限总公司 用于空调器的控制方法及空调器
CN110864409B (zh) * 2018-08-15 2021-12-21 青岛海尔空调器有限总公司 用于空调器的控制方法
CN110873424B (zh) * 2018-08-31 2021-07-23 重庆海尔空调器有限公司 一种空调及其自清洁的控制方法
CN110873423B (zh) * 2018-08-31 2021-07-23 重庆海尔空调器有限公司 一种空调及其自清洁的控制方法
CN109883002A (zh) * 2019-03-03 2019-06-14 广东美的制冷设备有限公司 空调器及其清洁控制方法、装置和计算机可读存储介质
CN109916040A (zh) * 2019-03-21 2019-06-21 青岛海尔空调器有限总公司 空调器自清洁控制方法和空调器
CN110469941B (zh) * 2019-07-17 2021-09-21 青岛海尔空调器有限总公司 用于空调器的自清洁控制方法
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