WO2019158088A1 - 用于空调器的自清洁控制方法 - Google Patents

用于空调器的自清洁控制方法 Download PDF

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WO2019158088A1
WO2019158088A1 PCT/CN2019/074971 CN2019074971W WO2019158088A1 WO 2019158088 A1 WO2019158088 A1 WO 2019158088A1 CN 2019074971 W CN2019074971 W CN 2019074971W WO 2019158088 A1 WO2019158088 A1 WO 2019158088A1
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indoor unit
self
air conditioner
cleaning
air
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PCT/CN2019/074971
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English (en)
French (fr)
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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 WO2019158088A1 publication Critical patent/WO2019158088A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/65Electronic processing for selecting an operating mode
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00Details or features not otherwise provided for
    • F24F2221/22Cleaning ducts or apparatus

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  • 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 a fan current of the indoor unit, a coil temperature of the indoor unit, and a dew point temperature of the air during the cooling operation of the air conditioner; The fan current of the indoor unit, the coil temperature of the indoor unit, and the dew point temperature of the air determine 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 fan current of the indoor unit, the coil temperature of the indoor unit, and the dew point temperature of the air” includes: determining the indoor unit Whether the coil temperature is lower than the dew point temperature of the air; if the coil temperature of the indoor unit is less than the dew point temperature of the air, the ratio of the fan current of the indoor unit to the standard current value is compared with the first preset value; according to the ratio and the first pre- A comparison result of the values is set to determine whether or not 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 a comparison result of the ratio and the first preset value includes: if the ratio is smaller than the first preset value, 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 comparison result of the ratio and the first preset value further includes: if the ratio is not less 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 fan current of the indoor unit, the coil temperature of the indoor unit, and the dew point temperature of the air” further includes: if the indoor unit The coil temperature is not less than the dew point temperature of the air, and the ratio of the fan current of the indoor unit to the standard current value is compared with the second preset value; according to the comparison result of the ratio and the second preset value, whether the indoor unit is executed Self-cleaning mode.
  • the step of: determining whether to perform the self-cleaning mode on the indoor unit according to the comparison result of the ratio and the second preset value comprises: if the ratio is smaller than the second preset value, 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 comparison result of the ratio and the second preset value further includes: if the ratio is not less than the second preset value, The self-cleaning mode is not performed on the indoor unit.
  • the first preset value is smaller than the second preset value.
  • the step of "determining whether to perform the self-cleaning mode on the indoor unit according to the fan current of the indoor unit, the coil temperature of the indoor unit, and the dew point temperature of the air” further includes: if The self-cleaning mode is performed on the indoor unit when the number of executions of the step of whether the coil temperature of the indoor unit is less than the dew point of the air reaches a preset number of times.
  • 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 preset 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 fan current and the standard of the indoor unit are used. The ratio of the 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 ratio of the fan current of the indoor unit to the standard current value is second The preset value is compared, and based on the comparison result, it is judged whether or not 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 present invention further provides another control mode, that is, when the number of executions of the step of "determining whether the coil temperature of the indoor unit is less than the dew point temperature of the air" reaches a preset number of times, the air conditioner The unit automatically performs a self-cleaning mode to clean the indoor unit.
  • the number of executions determines the timing of entering the self-cleaning mode, thereby enabling the air conditioner to perform the self-cleaning mode according to the second control mode, preventing the air conditioner from performing the self-cleaning mode by the first control mode and not performing the self-cleaning mode. happening.
  • 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 preset time, and by such a control manner,
  • a control mode for determining whether to execute the self-cleaning mode by whether the running time of the air conditioner reaches a preset time, and by such a control manner.
  • 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 the fan current of the indoor unit and the coil temperature of the indoor unit during the air conditioner cooling operation. And the dew point temperature of the air; in step S104, it is determined whether the self-cleaning mode is performed on the indoor unit according to the fan current of the indoor unit, the coil temperature of the indoor unit, and the dew point temperature of the air.
  • 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. .
  • the step of "determining whether to perform the self-cleaning mode on the indoor unit according to the fan current of the indoor unit, the coil temperature of the indoor unit, and the dew point temperature of the air” includes: step S202, determining the indoor unit Whether the coil temperature is lower than the dew point temperature of the air; if the coil temperature of the indoor unit is less than the dew point temperature of the air, the ratio of the fan current of the indoor unit to the standard current value is compared with the first preset value; according to the ratio and The comparison result of the first preset value determines 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 of the ratio with the first preset value” includes: if the ratio is smaller than the first preset value, performing a self-cleaning mode on the indoor unit (step S208); When the ratio is not less than the first preset value, the self-cleaning mode is not performed on the indoor unit (step S210). 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 on the indoor unit according to the fan current of the indoor unit, the coil temperature of the indoor unit, and the dew point temperature of the air” further includes: step S206, if the indoor unit The coil temperature is not less than the dew point temperature of the air, and the ratio of the fan current of the indoor unit to the standard current value is compared with the second preset value; according to the comparison result of the ratio and the second preset value, whether the indoor unit is executed Self-cleaning mode.
  • the step of “determining whether to perform the self-cleaning mode on the indoor unit according to the comparison result of the ratio and the second preset value” includes performing a self-cleaning mode on the indoor unit if the ratio is smaller than the second preset value; if the ratio is not less than the second value The preset value does not perform the self-cleaning mode for the indoor unit.
  • the air conditioner determines whether or not the indoor unit of the air conditioner has condensation. When the coil temperature of the indoor unit is not less than the dew point temperature of the air, the air conditioner No condensation will occur on the indoor unit, and the fan current of the indoor unit will not be affected by condensation.
  • the specific value of the second preset value can be set to be slightly higher, for example, the second preset value is set to 0.9, that is, When the ratio of the fan current to the standard current value of the indoor unit is less than 0.9, 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 lower than the second preset value.
  • 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 step of "determining whether to perform the self-cleaning mode on the indoor unit according to the fan current of the indoor unit, the coil temperature of the indoor unit, and the dew point temperature of the air” further includes: if "determining whether the coil temperature of the indoor unit is less than air
  • the number of executions of the steps of the dew point temperature reaches a preset number of times, and the self-cleaning mode is performed on the indoor unit.
  • the preset number of times can be set by an experimenter in an experimental manner, or the preset number of times can be set by an empirical method, as long as the demarcation point determined by the preset number of times enables the air conditioner to perform the self-cleaning mode.
  • the preset number of times may be 5 times, that is, when the number of executions of the step of "determining whether the coil temperature of the indoor unit is less than the dew point temperature of the air" reaches 5 times, the air conditioner immediately performs the self-cleaning mode automatically.
  • 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 preset time.
  • the preset time can be set by an experiment in an experimental manner, and the preset time can also be set by an empirical method.
  • the demarcation point determined by the preset time can enable the air conditioner to perform the self-cleaning mode.
  • the preset 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. Further, 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 to perform the self-cleaning mode under reasonable conditions, and avoid frequent occurrence of self-cleaning of the air conditioner due to condensation of the indoor unit due to condensation of the air conditioner. The cleaning mode leads to a waste of energy.

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Abstract

本发明属于空调器技术领域,旨在解决现有空调器通过室内机风机电流单一条件的判断,容易使空调器由于误判而频繁执行自清洁模式的问题。为此,本发明提供了一种用于空调器的自清洁控制方法,该空调器包括室内机,该自清洁控制方法包括:在空调器制冷运行时,获取室内机的风机电流、室内机的盘管温度和空气的露点温度;根据室内机的风机电流、室内机的盘管温度和空气的露点温度,判断是否对室内机执行自清洁模式。本发明使得空调器的室内机无论是在产生凝露或者未产生凝露的情况下,均能够使空调器在合理的条件下执行自清洁模式,能够避免出现空调器由于室内机凝露而误判为空调器结灰而频繁执行自清洁模式导致浪费能源的情况。

Description

用于空调器的自清洁控制方法 技术领域
本发明属于空调器技术领域,具体提供一种用于空调器的自清洁控制方法。
背景技术
空调器是能够为室内制冷/制热的设备,随着时间的推移,空调器的室内机和室外机上的积灰会逐渐增多,积灰累积到一定程度后会滋生大量的细菌,尤其在室内空气流经室内机时,会携带大量的灰尘和细菌,因此需要对空调器及时进行清洁。
现有技术中,空调器的清洁方式包括人工清洁和空调器自清洁,采用人工清洁较为费时费力,需要将空调器的各个零部件拆卸下来再进行清洁,清洁完成后还需要将各个零部件重新组装起来。因此,现在的许多空调器已经采用自清洁的方式,例如公开号为CN107525209A的专利中公开了一种空调器自清洁控制方法,具体而言,该控制方法包括检测空调器当前的运行模式,若空调器当前的运行模式为非制冷模式,将空调器调整为制冷模式;检测空调器的室内机风机的电机的转速及电机在转速下的第一电流值;将电机在转速下的第一电流值与在转速下的第一预设电流值进行比较,若第一电流值小于或等于第一预设电流值,则开启空调器的自清洁模式,执行室内机换热器的自清洁处理。也就是说,上述的专利中采用的是通过室内机的风机电流来判断是否执行室内机的自清洁,然而,在空调器的制冷运行过程中,空调器的室内机会产生凝露,而室内机产生凝露后会对室内机的风机电流产生影响,即室内机凝露的产生会使室内机的风机电流降低,因此,如果只通过室内机风机电流的单一条件判断无法确定室内机的电流降低到底是由于空调器的凝露产生还是由于空调器的结灰产生,如果空调器仅仅是由于室内机凝露而使室内机的风机电流降低,那么可能会出现室内机在未结灰的情况下空调器仍然会对室内机进行自清洁,这就会造成能源上的浪费。由此可见,通过空调器室内机的风机电流这个单一条件的判断,容易使空调器由于误判而频繁执行自清洁模式。
因此,本领域需要一种新的用于空调器的自清洁控制方法来解决上述问题。
发明内容
为了解决现有技术中的上述问题,即为了解决现有空调器通过室内机风机电流单一条件的判断,容易使空调器由于误判而频繁执行自清洁模式的问题,本发明提供了一种用于空调器的自清洁控制方法,该空调器包括室内机,该自清洁控制方法包括:在空调器制冷运行时,获取室内机的风机电流、室内机的盘管温度和空气的露点温度;根据室内机的风机电流、室内机的盘管温度和空气的露点温度,判断是否对室内机执行自清洁模式。
在上述自清洁控制方法的优选技术方案中,“根据室内机的风机电流、室内机的盘管温度和空气的露点温度,判断是否对室内机执行自清洁模式”的步骤包括:判断室内机的盘管温度是否小于空气的露点温度;如果室内机的盘管温度小于空气的露点温度,则将室内机的风机电流与标准电流值的比值与第一预设值比较;根据比值与第一预设值的比较结果,判断是否对室内机执行自清洁模式。
在上述自清洁控制方法的优选技术方案中,“根据比值与第一预设值的比较结果,判断是否对室内机执行自清洁模式”的步骤包括:如果比值小于第一预设值,则对室内机执行自清洁模式。
在上述自清洁控制方法的优选技术方案中,“根据比值与第一预设值的比较结果,判断是否对室内机执行自清洁模式”的步骤还包括:如果比值不小于第一预设值,则不对室内机执行自清洁模式。
在上述自清洁控制方法的优选技术方案中,“根据室内机的风机电流、室内机的盘管温度和空气的露点温度,判断是否对室内机执行自清洁模式”的步骤还包括:如果室内机的盘管温度不小于空气的露点温度,则将室内机的风机电流与标准电流值的比值与第二预设值比较;根据比值与第二预设值的比较结果,判断是否对室内机执行自清洁模式。
在上述自清洁控制方法的优选技术方案中,“根据比值与第二预设值的比较结果,判断是否对室内机执行自清洁模式”的步骤包括:如果比值小于第二预设值,则对室内机执行自清洁模式。
在上述自清洁控制方法的优选技术方案中,“根据比值与第二预设值的比较结果,判断是否对室内机执行自清洁模式”的步骤还包括:如果比值不小于第二预设值,则不对室内机执行自清洁模式。
在上述自清洁控制方法的优选技术方案中,第一预设值小于第二预设值。
在上述自清洁控制方法的优选技术方案中,“根据室内机的风机电流、室内机的盘管温度和空气的露点温度,判断是否对室内机执行自清洁模式”的步骤还包括:如果“判断室内机的盘管温度是否小于空气的露点温度”的步骤的执行次数达到预设次数,则对室内机执行自清洁模式。
在上述自清洁控制方法的优选技术方案中,自清洁控制方法还包括:如果空调器的运行时间达到预设时间,则对室内机执行自清洁模式。
本领域技术人员能够理解的是,在本发明的优选技术方案中,在空调器制冷运行时,首先判断室内机是否产生凝露,如果室内机产生凝露,则将室内机的风机电流与标准电流值的比值与第一预设值比较,根据比较结果,判断是否对室内机执行自清洁模式;如果室内机未产生凝露,则将室内机的风机电流与标准电流值的比值与第二预设值比较,根据比较结果,判断是否对室内机执行自清洁模式。在实际应用中,由于产生凝露会使室内机的风机电流降低,因此将第一预设值设定得低于第二预设值,使得在空调器的室内机产生凝露时,可以将室内机的风机电流与标准电流值的比值与稍低的预设值比较。通过这样的设置,使得空调器无论是在产生凝露或者未产生凝露的情况下,均能够使空调器在合理的条件下执行自清洁模式,即通过引进空调器的室内机的盘管温度和空气的露点温度的判断条件,能够避免出现空调器由于室内机凝露而误判为空调器结灰而频繁执行自清洁模式导致浪费能源的情况。
进一步地,在上述控制方式的基础上,本发明还提供了另一种控制方式,即当“判断室内机的盘管温度是否小于空气的露点温度”的步骤的执行次数达到预设次数,空调器自动执行自清洁模式,从而对室内机进行清洁。通过这样的控制方式,使得在检测室内机的风机电流发生故障(即无法获取室内机的风机电流)时,仍然可以通过计算“判断室内机的盘管温度是否小于空气的露点温度”的步骤的执行次数来判断进入自清洁模式的时机,从而使空调器能够根据第二种控制方式执行自清洁模式,避免空调器无法通过第一种控制方式执行自清洁模式而出现一直不执行自清洁模式的情况。
更进一步地,在上述两种控制方式的基础上,本发明更进一步地提 供了通过空调器的运行时间是否达到预设时间来判断是否执行自清洁模式的控制方式,通过这样的控制方式,使得在用于检测室内机的盘管温度的室内机盘管温度传感器和检测空气的露点温度的空气露点温度传感器发生故障/损坏,并且检测室内机的风机电流也发生故障时,仍然可以通过空调器的运行时间来判断进入自清洁模式的时机,避免空调器无法通过第一种以及第二种控制方式执行自清洁模式而出现一直不执行自清洁模式的情况。
附图说明
图1是本发明的自清洁控制方法的流程图;
图2是本发明的自清洁控制方法实施例的流程图;
图3是本发明的空调器的示意性框图。
具体实施方式
下面参照附图来描述本发明的优选实施方式。本领域技术人员应当理解的是,这些实施方式仅仅用于解释本发明的技术原理,并非旨在限制本发明的保护范围。例如,虽然本发明是结合空调器的室内机说明的,但是,由于空调器的室内机和室外机是对称式结构,因此,本发明的原理同样适用于在空调器制热运行时室外机进行自清洁,此时,判断条件中的室内机的风机电流替换为室外机的风机电流,室内机的盘管温度替换为室外机的盘管温度。
基于背景技术指出的现有空调器通过室内机风机电流单一条件的判断,容易使空调器由于误判而频繁执行自清洁模式的问题。本发明提供了一种用于空调器的自清洁控制方法,旨在使空调器在合理的条件下执行自清洁模式,从而避免出现空调器由于室内机凝露而误判为空调器结灰而频繁执行自清洁模式导致浪费能源的情况。
具体地,本发明的空调器包括室内机,如图1所示,本发明的自清洁控制方法包括:步骤S102,在空调器制冷运行时,获取室内机的风机电流、室内机的盘管温度和空气的露点温度;步骤S104,根据室内机的风机电流、室内机的盘管温度和空气的露点温度,判断是否对室内机执行自清洁模式。其中,可以通过室内机盘管温度传感器来获取室内机的盘管温度,通过空气露点温度传感器来获取空气的露点温度。需要说明的是,室内机的风机电流大小能够直接反映出空调器的结灰程度,因为在一定的转速下风机的 负荷是确定的,当相同转速下风机的负荷增大,相应地,风机电流减小,此时说明风机的风阻增加,也就是说室内机上结灰,并且结灰越严重,风机电流就越小,因此,通过风机电流大小能够充分地判断空调器的室内机的结灰程度。
优选地,如图2所示,“根据室内机的风机电流、室内机的盘管温度和空气的露点温度,判断是否对室内机执行自清洁模式”的步骤包括:步骤S202,判断室内机的盘管温度是否小于空气的露点温度;步骤S204,如果室内机的盘管温度小于空气的露点温度,则将室内机的风机电流与标准电流值的比值与第一预设值比较;根据比值与第一预设值的比较结果,判断是否对室内机执行自清洁模式。“根据比值与第一预设值的比较结果,判断是否对室内机执行自清洁模式”的步骤包括:如果比值小于第一预设值,则对室内机执行自清洁模式(步骤S208);如果比值不小于第一预设值,则不对室内机执行自清洁模式(步骤S210)。需要说明的是,在本发明的技术描述中,“不执行自清洁模式”可以理解为不立即执行自清洁模式,即延时执行自清洁模式。通过这样的方式,首先通过将室内机的盘管温度和空气的露点温度比较,来判断空调器的室内机是否有凝露产生,当室内机的盘管温度小于空气的露点温度,空气中的水蒸气会在室内机上预冷产生凝露,由于凝露的产生,会在一定程度上使空调器的室内机的风机电流降低,因此可以将第一预设值的具体数值设置得较低,例如第一预设值设置为0.8,即室内机的风机电流与标准电流值的比值低于0.8时,空调器才会对室内机执行自清洁模式。当然,第一预设值还可以为其他数值,本领域技术人员可以在实际应用中灵活地设置第一预设值的具体数值,只要通过第一预设值确定的分界点能够判断在室内机产生凝露的情况下室内机是否结灰即可。
优选地,如图2所示,“根据室内机的风机电流、室内机的盘管温度和空气的露点温度,判断是否对室内机执行自清洁模式”的步骤还包括:步骤S206,如果室内机的盘管温度不小于空气的露点温度,则将室内机的风机电流与标准电流值的比值与第二预设值比较;根据比值与第二预设值的比较结果,判断是否对室内机执行自清洁模式。“根据比值与第二预设值的比较结果,判断是否对室内机执行自清洁模式”的步骤包括如果比值小于第二预设值,则对室内机执行自清洁模式;如果比值不小于第二预设值,则不对室内机执行自清洁模式。通过这样的方式,首先通过将室内机的盘管温度和空 气的露点温度比较,来判断空调器的室内机是否有凝露产生,当室内机的盘管温度不小于空气的露点温度,空调器的室内机上不会产生凝露,室内机的风机电流不会由于凝露而受到影响,因此可以将第二预设值的具体数值设置得稍高,例如第二预设值设置为0.9,即室内机的风机电流与标准电流值的比值低于0.9时,空调器才会对室内机执行自清洁模式。当然,第二预设值还可以为其他数值,本领域技术人员可以在实际应用中灵活地设置第二预设值的具体数值,只要通过第二预设值确定的分界点能够判断在室内机未产生凝露的情况下室内机是否结灰即可。此外,为了在室内机产生凝露时要考虑到凝露对室内机的风机电流的影响,应该始终将第一预设值设定得低于第二预设值。
在本发明的实施方式中,标准电流值可以在空调器出厂前进行测定,即空调器处于完全清洁的状态下,使空调器以标准工况运行,在空调器以标准工况运行的过程中,测定室内机的风机在不同转速下分别对应的标准电流值。
优选地,“根据室内机的风机电流、室内机的盘管温度和空气的露点温度,判断是否对室内机执行自清洁模式”的步骤还包括:如果“判断室内机的盘管温度是否小于空气的露点温度”的步骤的执行次数达到预设次数,则对室内机执行自清洁模式。其中,本领域技术人员可以通过实验的方式设定预设次数,也可以通过经验的方式设定预设次数,只要通过预设次数确定的分界点能够使空调器执行自清洁模式即可。例如,预设次数可以为5次,即在“判断室内机的盘管温度是否小于空气的露点温度”的步骤的执行次数达到5次时,空调器立即自动执行自清洁模式。
优选地,本发明的自清洁控制方法还包括:如果空调器的运行时间达到预设时间,则对室内机执行自清洁模式。其中,本领域技术人员可以通过实验的方式设定预设时间,也可以通过经验的方式设定预设时间,只要通过预设时间确定的分界点能够使空调器执行自清洁模式即可。例如,预设时间可以为10h(小时),即空调器的运行时间达到10h时,空调器立即自动执行自清洁模式。
参见图3,本发明还提供一种空调器100,其包括室内机120和室外机110。室内机120内设置有风机122及其电流检测装置121和换热器124(其包括盘管)及盘管温度传感器123。此外,室内机120还具有用于检测空气 露点温度的露点温度传感器125。空调器100可采用上述任一实施例所述的自清洁控制方法,以在合理的条件下执行自清洁模式,避免出现空调器由于室内机凝露而误判为空调器结灰而频繁执行自清洁模式导致浪费能源的情况。
至此,已经结合附图所示的优选实施方式描述了本发明的技术方案,但是,本领域技术人员容易理解的是,本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下,本领域技术人员可以对相关技术特征作出等同的更改或替换,这些更改或替换之后的技术方案都将落入本发明的保护范围之内。

Claims (10)

  1. 一种用于空调器的自清洁控制方法,所述空调器包括室内机,其特征在于,所述自清洁控制方法包括:
    在所述空调器制冷运行时,获取所述室内机的风机电流、所述室内机的盘管温度和空气的露点温度;
    根据所述室内机的风机电流、所述室内机的盘管温度和所述空气的露点温度,判断是否对所述室内机执行自清洁模式。
  2. 根据权利要求1所述的自清洁控制方法,其特征在于,“根据所述室内机的风机电流、所述室内机的盘管温度和所述空气的露点温度,判断是否对所述室内机执行自清洁模式”的步骤包括:
    判断所述室内机的盘管温度是否小于所述空气的露点温度;
    如果所述室内机的盘管温度小于所述空气的露点温度,则将所述室内机的风机电流与标准电流值的比值与第一预设值比较;
    根据所述比值与第一预设值的比较结果,判断是否对所述室内机执行自清洁模式。
  3. 根据权利要求2所述的自清洁控制方法,其特征在于,“根据所述比值与第一预设值的比较结果,判断是否对所述室内机执行自清洁模式”的步骤包括:
    如果所述比值小于所述第一预设值,则对所述室内机执行自清洁模式。
  4. 根据权利要求3所述的自清洁控制方法,其特征在于,“根据所述比值与第一预设值的比较结果,判断是否对所述室内机执行自清洁模式”的步骤还包括:
    如果所述比值不小于所述第一预设值,则不对所述室内机执行自清洁模式。
  5. 根据权利要求2所述的自清洁控制方法,其特征在于,“根据所述室内机的风机电流、所述室内机的盘管温度和所述空气的露点温度,判断是否对所述室内机执行自清洁模式”的步骤还包括:
    如果所述室内机的盘管温度不小于所述空气的露点温度,则将所述室内机的风机电流与标准电流值的比值与第二预设值比较;
    根据所述比值与第二预设值的比较结果,判断是否对所述室内机执行自清洁模式。
  6. 根据权利要求5所述的自清洁控制方法,其特征在于,“根据所述比值与第二预设值的比较结果,判断是否对所述室内机执行自清洁模式”的步骤包括:
    如果所述比值小于所述第二预设值,则对所述室内机执行自清洁模式。
  7. 根据权利要求6所述的自清洁控制方法,其特征在于,“根据所述比值与第二预设值的比较结果,判断是否对所述室内机执行自清洁模式”的步骤还包括:
    如果所述比值不小于所述第二预设值,则不对所述室内机执行自清洁模式。
  8. 根据权利要求5所述的自清洁控制方法,其特征在于,所述第一预设值小于所述第二预设值。
  9. 根据权利要求2所述的自清洁控制方法,其特征在于,“根据所述室内机的风机电流、所述室内机的盘管温度和所述空气的露点温度,判断是否对所述室内机执行自清洁模式”的步骤还包括:
    如果“判断所述室内机的盘管温度是否小于所述空气的露点温度”的步骤的执行次数达到预设次数,则对所述室内机执行自清洁模式。
  10. 根据权利要求1至9中任一项所述的自清洁控制方法,其特征在于,所述自清洁控制方法还包括:
    如果所述空调器的运行时间达到预设时间,则对所述室内机执行自清洁模式。
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