WO2019144675A1 - Control method and apparatus for air conditioner - Google Patents

Control method and apparatus for air conditioner Download PDF

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Publication number
WO2019144675A1
WO2019144675A1 PCT/CN2018/114878 CN2018114878W WO2019144675A1 WO 2019144675 A1 WO2019144675 A1 WO 2019144675A1 CN 2018114878 W CN2018114878 W CN 2018114878W WO 2019144675 A1 WO2019144675 A1 WO 2019144675A1
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WIPO (PCT)
Prior art keywords
control
humidity
self
air conditioner
shower
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Application number
PCT/CN2018/114878
Other languages
French (fr)
Chinese (zh)
Inventor
王淼
邱嵩
武磊
高波
姜菲
李永鹏
苗清波
申伟杰
刘昕燕
Original Assignee
青岛海尔空调器有限总公司
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Priority to CN201810075973.XA priority Critical patent/CN108413558A/en
Priority to CN201810075973.X priority
Application filed by 青岛海尔空调器有限总公司 filed Critical 青岛海尔空调器有限总公司
Publication of WO2019144675A1 publication Critical patent/WO2019144675A1/en

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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
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32Responding to malfunctions or emergencies
    • 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
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41Defrosting; Preventing freezing
    • 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
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56Remote control
    • 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
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/20Humidity

Abstract

Disclosed are a control method and apparatus for an air conditioner, belonging to the technical field of air conditioners. The control method comprises: in response to a self-cleaning instruction input by a user and used for indicating enabling a self-cleaning mode, acquiring a humidity parameter of an indoor heat exchanger; comparing the humidity parameter with a pre-set humidity threshold value to obtain a comparison result for indicating whether a spray apparatus is enabled; and in response to the comparison result indicating enabling the spray apparatus, controlling the enabling of the spray apparatus and switching to the self-cleaning mode to run. According to the control method for an air conditioner, which is provided in this text, a humidity parameter of a frosting indoor heat exchanger can be collected, and whether the humidity requirement of a frosting stage of air conditioner self-cleaning is met is determined thereby, thus a spray apparatus can be enabled where the humidity requirement is not met, so as to increase the moisture requirement of the frosting stage of air conditioner self-cleaning by means of condensed water at a nozzle of the spray apparatus, thereby being capable of ensuring the cleaning efficiency and dust removal effects of air conditioner self-cleaning.

Description

Air conditioner control method and device

The present application is filed on the basis of the Chinese Patent Application No. 201100 075 973, the entire disclosure of which is hereby incorporated by reference.

Technical field

This paper relates to the field of air conditioning technology, and in particular to a method and device for controlling an air conditioner.

Background technique

When the indoor unit of the air conditioner operates in the cooling or heating mode, the air in the indoor environment enters the interior of the indoor unit along the air inlet of the indoor unit, and is re-blowed into the indoor environment through the air outlet after the heat exchange piece is exchanged, During this process, impurities such as dust and large particles trapped in the indoor air will enter the indoor unit along with the airflow, although the dust filter installed at the air inlet of the indoor unit can filter most of the dust and particles. However, there will still be a small amount of tiny dust that cannot be completely blocked by filtration. With the long-term use of the air conditioner, the dust will gradually deposit on the surface of the heat exchange sheet, and the dust covering the outer surface of the heat exchanger is inferior in thermal conductivity. It will directly affect the heat exchange between the heat exchange sheet and the indoor air. Therefore, in order to ensure the heat exchange efficiency of the indoor unit, the indoor unit needs to be cleaned regularly.

Generally, the cleaning method of the indoor unit of the air conditioner in the prior art mainly includes two methods of manual cleaning and self-cleaning of the air conditioner, wherein the self-cleaning method of the air conditioner is mainly divided into a frosting stage and a defrosting stage, wherein, in the condensation In the frost stage, the air conditioner operates in the cooling mode first, and increases the refrigerant output of the indoor heat exchanger, so that the moisture in the indoor air can gradually condense into frost or ice layer on the outer surface of the heat exchanger. The condensed ice layer can be combined with dust to strip the dust from the outer surface of the heat exchanger; afterwards, during the defrosting stage, the air conditioner operates in the heating mode to melt the frost layer condensed on the outer surface of the heat exchanger. The dust will also collect into the water tray with the melted water flow, so that the self-cleaning effect of the air conditioner can be achieved.

However, the existing self-cleaning process of the air conditioner does not take into account the indoor air humidity or the humidity at the indoor heat exchanger where the frost is generated. Therefore, in some cases where the humidity is low and the moisture content is low, the indoor unit is condensed. The amount of frost is often very thin, and the peeling of impurities such as dust is not well achieved, resulting in poor actual cleaning effect.

Summary of the invention

This paper provides a method and device for controlling an air conditioner, which aims to solve the problem of poor self-cleaning effect when the moisture content in the indoor unit is small. In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This generalization is not a general comment, nor is it intended to identify key/critical constituent elements or to describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the following detailed description.

According to a first aspect of the present invention, a control method for an air conditioner is provided, wherein the air conditioner has a shower device that can spray condensed water to the indoor heat exchanger; and the control method includes:

Acquiring the humidity parameter of the indoor heat exchanger in response to a self-cleaning instruction input by the user for indicating that the self-cleaning mode is enabled;

Comparing the humidity parameter with a preset humidity threshold to obtain a comparison result indicating whether the shower device is enabled or not;

In response to the comparison of the activation of the sprinkler, the control activates the sprinkler and switches to self-clean mode operation.

In an optional embodiment, the control method further comprises: controlling the air conditioner to switch to the self-cleaning mode operation in response to the comparison result of not enabling the shower device.

In an optional embodiment, the humidity parameter is compared with a preset humidity threshold to obtain a comparison result indicating whether the sprinkler is enabled, including:

When the humidity parameter is less than the humidity threshold, a comparison result for indicating the activation of the shower device is obtained;

When the humidity parameter is greater than or equal to the humidity threshold, a comparison result indicating that the shower device is not activated is obtained.

In an optional embodiment, the self-cleaning mode includes a frosting stage and a defrost stage which are sequentially performed;

The control method further includes controlling the shutdown of the sprinkler before the defrost phase begins.

In an optional implementation manner, before controlling to activate the sprinkler device, the control method further includes: adjusting a spray parameter of the sprinkler device according to a humidity difference between the humidity parameter and the humidity threshold.

According to a second aspect of the present invention, there is also provided a control device for an air conditioner, the air conditioner having a shower device capable of spraying condensed water to the indoor heat exchanger; the control device comprising:

An obtaining unit, configured to obtain a humidity parameter of the indoor heat exchanger in response to a self-cleaning instruction input by the user for indicating that the self-cleaning mode is enabled;

a comparing unit, configured to compare the humidity parameter with a preset humidity threshold to obtain a comparison result for indicating whether to activate the shower device;

The first response unit is configured to control the activation of the shower device and switch to the self-cleaning mode operation in response to the comparison result of the activation of the shower device.

In an optional implementation manner, the control device further includes: a second response unit, configured to control the air conditioner to switch to the self-cleaning mode operation in response to the comparison result that the shower device is not activated.

In an optional implementation manner, the comparing unit is specifically configured to:

When the humidity parameter is less than the humidity threshold, a comparison result for indicating the activation of the shower device is obtained;

When the humidity parameter is greater than or equal to the humidity threshold, a comparison result indicating that the shower device is not activated is obtained.

In an optional embodiment, the self-cleaning mode includes a frosting stage and a defrost stage which are sequentially performed;

The control device also includes a shutdown unit for controlling the shutdown of the shower device prior to the start of the defrost phase.

In an optional implementation manner, the control device further includes a spray adjustment unit, configured to: adjust a spray parameter of the spray device according to a humidity difference between the humidity parameter and the humidity threshold before controlling the spray device to be activated.

The beneficial effects of solving the above technical solutions in this paper are:

The air conditioning control method provided herein can collect the humidity parameter of the indoor heat exchanger where the frosting occurs, and judge whether the humidity requirement of the self-cleaning frosting stage of the air conditioner is satisfied, so that the spray can be activated without satisfying the humidity requirement. The leaching device increases the moisture demand of the air conditioning self-cleaning condensation stage by the condensed water sprayed through the spray device, thereby ensuring the cleaning efficiency and dust removal effect of the air conditioner self-cleaning.

The above general description and the following detailed description are merely exemplary and explanatory and are not limiting.

DRAWINGS

The drawings herein are incorporated in and constitute a part of the specification, and are in the

1 is a flow chart 1 of an air conditioning control method of the present disclosure, according to an exemplary embodiment;

2 is a second flowchart of an air conditioning control method of the present disclosure, according to an exemplary embodiment;

FIG. 3 is a structural block diagram 1 of an air conditioning control apparatus according to an exemplary embodiment;

FIG. 4 is a structural block diagram 2 of an air conditioning control apparatus according to an exemplary embodiment of the present invention.

Detailed ways

The following description and the annexed drawings are intended to illustrate the specific embodiments herein Other embodiments may include structural, logical, electrical, process, and other changes. The examples represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included or substituted for parts and features of other embodiments. The scope of the embodiments herein includes the full scope of the claims, and all equivalents of the claims. In this context, various embodiments may be referred to individually or collectively by the term "invention," for convenience only, and if more than one invention is disclosed, it is not intended to automatically limit the scope of the application to any A single invention or inventive concept. Herein, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not require or imply any actual relationship between the entities or operations or order. Furthermore, the terms "comprises" or "comprising" or "comprising" or any other variations are intended to encompass a non-exclusive inclusion, such that a process, method, or device that includes a plurality of elements includes not only those elements but also other items not specifically listed. Elements, or elements that are inherent to such a process, method, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, or device that comprises the element. The various embodiments herein are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the method, product, and the like disclosed in the embodiments, since it corresponds to the method part disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

Generally, the existing air conditioner includes an indoor heat exchanger, an outdoor heat exchanger, a throttle device, and a compressor, and the indoor heat exchanger, the outdoor heat exchanger, the throttling device, and the compressor are connected by a refrigerant pipe to constitute a refrigerant cycle. The circuit and the refrigerant flow through the flow path set by the refrigerant circulation circuit along different operation modes to realize functions such as heating, cooling and defrosting.

In an embodiment, the operating modes of the air conditioner herein include a cooling mode, a heating mode, and a self-cleaning mode, wherein the cooling mode is generally applied to a high temperature condition in summer to reduce the indoor ambient temperature; and the heating mode is generally applied to a low temperature in winter. The working condition is used to raise the indoor ambient temperature; while the self-cleaning mode is generally the user's self-selected function mode, which can automatically clean the heat exchanger in the case of more dust and dirt accumulated on the heat exchanger.

Generally, since the indoor heat exchanger is a heat exchanger directly used to change the indoor temperature environment, the cleanness of the indoor heat exchanger can directly affect the user experience. Therefore, the main application object of the self-cleaning mode of the existing air conditioner is the indoor heat exchanger, and the self-cleaning process in the subsequent embodiment is also the self-cleaning object of the indoor heat exchanger. However, this does not mean that the control method of this paper cannot be applied to the self-cleaning operation of the outdoor heat exchanger. It should be understood that if the existing air conditioner adopts the same or similar control method as described herein, the outdoor heat exchanger is self-contained. Cleaning operations should also be included in the scope of this article.

When the air conditioner operates in the cooling mode, the refrigerant flow direction is that the high-temperature refrigerant discharged from the compressor first flows through the outdoor heat exchanger to exchange heat with the outdoor environment, and then exchanges heat with the indoor environment in the inflowing indoor heat exchanger, and finally the refrigerant flows back to The compressor is recompressed; in this process, the refrigerant flowing through the outdoor heat exchanger releases heat to the outdoor environment, and the refrigerant flowing through the indoor heat exchanger absorbs heat from the indoor environment, and the refrigerant circulates through the refrigerant circulation loop. The flow can continuously discharge the heat in the room to the outdoor environment, so that the cooling purpose of reducing the indoor ambient temperature can be achieved.

The high-temperature refrigerant discharged from the refrigerant flow in the heating mode operation to the compressor first flows through the indoor heat exchanger to exchange heat with the outdoor environment, and then exchanges heat with the indoor environment in the outdoor heat exchanger, and finally the refrigerant returns. The compressor is recompressed; in this process, the refrigerant flowing through the indoor heat exchanger releases heat to the indoor environment, and the refrigerant flowing through the outdoor heat exchanger absorbs heat from the outdoor environment, and the refrigerant passes through the refrigerant circulation loop. The circulating flow can continuously release the outdoor heat to the indoor environment, so that the heating effect of improving the indoor ambient temperature can be achieved.

The workflow of the air conditioner running in the self-cleaning mode mainly includes the two stages of the frosting stage and the defrost stage, wherein the frosting mode is operated in the frosting stage to coagulate the indoor heat exchanger of the indoor unit. Ice frosting; the defrosting mode is run during the defrosting phase to melt the frost that the indoor heat exchanger condenses during the first frosting stage.

Specifically, in the operation mode of the existing air conditioner, if the power of the compressor is increased and the output of the refrigerant is increased, the amount of the low-temperature refrigerant input into the indoor unit can be increased, and the excess refrigerant can be used to make the interior of the indoor unit. When the temperature inside the indoor unit is lower than the critical temperature of the condensation (such as 0 ° C), the water vapor flowing through the indoor unit will gradually condense into frost inside the indoor unit. Therefore, the control method in this paper is In the case where the air conditioner is in the direction of the refrigerant defined by the cooling mode, the frosting operation of the indoor heat exchanger is realized by adjusting the operating parameters of the components such as the compressor, the internal fan, and the throttle device.

Similarly, in the operation mode of the existing air conditioner, since the high-temperature refrigerant first flows through the indoor heat exchanger, the cold amount of the high-temperature refrigerant can increase the internal temperature of the indoor unit, and the temperature inside the indoor unit. Above the critical temperature value of the condensation (such as 0 ° C), the frost that condenses inside the indoor unit will gradually melt and drip, so that the frost can be separated from the indoor heat exchanger. In the control method of the present invention, the defrosting operation of the indoor heat exchanger is realized by adjusting the operating parameters of the compressor, the internal fan, the throttling device and the like in the case where the refrigerant flows in the heating mode.

In the embodiment of the present invention, the indoor unit of the air conditioner is further provided with a sprinkling device. Specifically, the sprinkling device is mainly composed of an atomizer, a water delivery pipeline and a driving water pump, wherein the atomizing outlet of the atomizer faces the air conditioning chamber The indoor heat exchanger of the machine, so that the water vapor after atomization can be concentrated around the indoor heat exchanger to improve the water vapor content of the outer surface of the indoor heat exchanger and the surrounding air; one end of the water supply pipeline is connected with the water inlet of the atomizer The other end is connected to the water receiving tray of the air conditioner or the external water supply source. The driving water pump can transport the condensed water in the water receiving tray or the water supply of the water supply source to the atomizer through the water delivery pipeline to act as the atomizing water vapor of the atomizer. Supply water.

1 is a flow chart 1 of a method of controlling an air conditioner of the present disclosure, according to an exemplary embodiment.

As shown in FIG. 1 , the present invention provides a control method for an air conditioner, which can be used to control the running state of the relevant components of the air conditioner during the self-cleaning mode of the air conditioner and during the self-cleaning process; specifically, the main processes of the control method include :

S101. Acquire a humidity parameter of the indoor heat exchanger in response to a self-cleaning instruction input by the user for indicating that the self-cleaning mode is enabled.

In this embodiment, the air conditioner has a remote control, a control panel, and the like, which can be used by the user to input relevant control commands. Through the remote controller, the control panel, and the like, the user can input a heating or cooling command, increase or decrease the wind speed command, and cool or Instructions for heating mode, and so on. Here, the remote controller and the control panel further have a self-cleaning instruction for editing the air conditioner to enable or disable the self-cleaning mode, that is, when the user feels that the indoor unit is poor in cleanliness and needs to be cleaned, it can be manually In the manner of input control, a self-cleaning command for enabling the self-cleaning mode is sent to the air conditioner by using a remote controller, a control panel, or the like, and the air conditioner can respond to the self-cleaning command;

In another embodiment herein, the air conditioner further has a function of automatically detecting whether the self-cleaning activation condition is satisfied, and automatically generating a self-cleaning instruction when satisfied; for example, the air conditioner can collect and store the heat exchange efficiency of the associated indoor heat exchanger Historical data, such as the amount of change in the temperature of the outlet air per unit time, the hydraulic pressure difference between the inlet and outlet of the indoor heat exchanger or the temperature difference, etc., because the indoor heat exchanger of the air conditioner will reduce its own heat exchange efficiency when covering more dust, so By comparing the real-time data of the heat exchange efficiency of the currently detected pipeline indoor heat exchanger with the historical data, if the current heat exchange efficiency is lower than the historical data in the case of discharging the relevant functional device failure, The indoor heat exchanger of the air conditioner is presumed to be covered with more dust to meet the self-cleaning activation condition. At this time, the air conditioner automatically generates a self-cleaning command, and the air conditioner automatically runs the self-cleaning mode for automatic cleaning.

Therefore, optionally, in step S101, in addition to the self-cleaning instruction for instructing the self-cleaning mode to be enabled in response to the user input, the air conditioner may respond to the self-cleaning instruction generated by itself through the above-described judgment comparison process.

In this embodiment, the air conditioner is provided with a humidity sensor at the indoor heat exchanger, and the humidity sensor can be used to detect the humidity condition of the outer surface of the indoor heat exchanger or the humidity condition of the ambient side air of the indoor heat exchanger.

S102. Compare the humidity parameter with a preset humidity threshold to obtain a comparison result for indicating whether the shower device is enabled.

In this embodiment, the air conditioner prestores one or more humidity thresholds, and the humidity threshold may be used to characterize the humidity value corresponding to the frosting stage of the air conditioner running self-cleaning mode to reach the basic frosting amount requirement, and the measured humidity is higher than the measured value. When the humidity threshold is reached, the amount of frosting in the condensation stage of the air conditioner running self-cleaning mode is greater than the basic amount of frosting. At this time, the degree of dust peeling of the air conditioner is high, and the self-cleaning effect meets the expected requirement; and the measured humidity is lower than the measured When the humidity threshold is reached, the amount of frosting in the condensation stage of the air conditioner running self-cleaning mode is less than the basic amount of frosting. At this time, the degree of dust peeling of the air conditioner is low, and the self-cleaning effect does not meet the expected requirements.

Thus, by comparing the detected humidity parameter with a preset humidity threshold, a comparison result for indicating whether or not to activate the shower device can be obtained.

Specifically, the foregoing compares the humidity parameter with a preset humidity threshold to obtain a comparison result for indicating whether to activate the shower device, including:

When the humidity parameter is less than the humidity threshold, a comparison result for indicating the activation of the shower device is obtained; for example, a preset one humidity threshold is a relative humidity of 75%, and the humidity parameter obtained in step S101 is a relative humidity of 60%, 65%. When the humidity parameter is less than 75% of the humidity threshold, a comparison result for indicating the activation of the shower device is obtained. Thus, in the case where the actual humidity condition at the indoor heat exchanger does not meet the moisture humidity requirement of the frosting stage, the air conditioner of the present invention produces a comparison result indicating that the spray device is activated to utilize the spray of the shower device in the subsequent step. The leaching work increases the moisture content of the indoor heat exchanger, thereby meeting the moisture requirements of the condensation stage of the air conditioning self-cleaning process.

When the humidity parameter is greater than or equal to the humidity threshold, a comparison result is obtained for indicating that the shower device is not activated; for example, the humidity parameter acquired in step S101 is a relative humidity of 75%, 80%, etc., greater than or equal to the humidity threshold of 75%. When the humidity parameter is used, a comparison result that is not used to indicate the activation of the sprinkler is obtained. At this time, the moisture content of the indoor heat exchanger is relatively high. Therefore, in the frosting stage of the self-cleaning process, the moisture content of the indoor heat exchanger can meet the moisture humidity requirement of the basic frosting amount, and thus it is not required. The spraying device is enabled to continue to increase the moisture content of the indoor heat exchanger to achieve the purpose of saving water and reducing consumption.

S103. Controlling the activation of the sprinkler device and switching to the self-cleaning mode operation in response to the comparison result of enabling the sprinkler device.

Here, when a comparison result for instructing the activation of the sprinkler is obtained, the sprinkler is controlled to be sprayed, and the sprinkler sprays the atomized water vapor to the indoor heat exchanger to increase the humidity and the circumference of the outer surface of the indoor heat exchanger. The water vapor content in the side air; at the same time, the cooling medium defined by the cooling mode flows out of the air conditioner, and the temperature of the refrigerant flowing into the indoor heat exchanger is lowered, so that the temperature of the outer surface of the indoor heat exchanger is also lowered, and the indoor heat exchanger is also reduced. The moisture on the outer surface and the water vapor in the peripheral air gradually condense into frost on the outer surface of the indoor heat exchanger, and the dust on the outer surface is peeled off by the frost. Therefore, by using a shower device to increase the moisture of the outer surface of the indoor heat exchanger and the water vapor content in the peripheral air, the source of moisture required for frost condensation can be ensured, so that the frost can reach the basic frost amount or even more, thereby effectively ensuring The cleaning effect of the air conditioning self-cleaning process.

In an optional embodiment, the control method further includes a step S104 of controlling the air conditioner to switch to the self-cleaning mode operation in response to the comparison result of not enabling the shower device.

Here, when a comparison result indicating that the sprinkler is not activated is obtained, the sprinkler is not activated, and at this time, the air conditioner is still switched to the self-cleaning mode in accordance with the conventional self-cleaning process. Since the moisture content of the outer surface of the indoor heat exchanger and the water vapor content in the peripheral air at this time can already meet the water requirement of the self-cleaning process in the frosting stage, when the air conditioner performs the conventional self-cleaning process, in the frosting stage A basic amount of frost can be achieved.

The specific process of the self-cleaning mode of the air conditioner in the above embodiment can be obtained by those skilled in the art according to the prior art, and details are not described herein.

In this embodiment, the control method further includes: controlling to turn off the shower device before the defrosting phase begins. Generally, the self-cleaning process of the air conditioner requires only the moisture content of the frosting stage, and in the defrosting stage, the air conditioner flows according to the cooling medium defined by the heating mode, and at this time, the heat of the refrigerant is used to accelerate the frosting. The melting of the frost condensed in the stage, therefore, in order to avoid the condensed water sprayed by the sprinkler device absorbing the heat of the high-temperature refrigerant, resulting in the problem of reduced defrosting efficiency, this article controls the shutdown of the sprinkler before the defrosting phase begins.

Preferably, before the control of the step S103 is enabled to activate the shower device, the control method of the present invention further comprises: adjusting the spray parameter of the shower device according to the humidity difference between the humidity parameter and the humidity threshold.

Here, the spray parameters include, but are not limited to, the amount of spray water, water pressure, and the like.

Generally, in the case where it is determined that the sprinkler is activated, the humidity parameter is smaller than the humidity threshold. Therefore, for ease of calculation, the humidity difference takes the absolute value of the difference obtained by subtracting the humidity threshold from the humidity parameter; the larger the humidity difference is, It indicates that the lower the water vapor content at the current indoor heat exchanger, the more water needs to be replenished during the actual frosting stage. At this time, it is necessary to increase the relevant spray parameters of the sprinkler, such as increasing the amount of spray water and increasing the water. Pressure and so on, thereby enhancing the spray efficiency of the spray device, so that the water vapor content at the indoor heat exchanger can reach or exceed the humidity threshold as soon as possible, thereby ensuring the basic frosting amount in the frosting stage.

The smaller the humidity difference, the closer the water vapor content at the current indoor heat exchanger is to the humidity threshold, the less water needs to be replenished during the actual frosting phase. At this time, the relevant spray parameters of the sprinkler can be reduced. Such as reducing the amount of spray water, reducing water pressure, etc., to avoid excessive moisture in the spray device spray.

2 is a flow chart 2 of a method of controlling an air conditioner of the present disclosure, according to an exemplary embodiment. In the application scenario shown in FIG. 2, the specific process of the air conditioner performing the self-cleaning process is as follows:

S201, air conditioning operation;

S202. Receive a self-cleaning instruction input by a user for indicating that the self-cleaning mode is enabled.

S203, detecting a humidity parameter RH of the indoor heat exchanger;

Here, the humidity parameter RH is a surface humidity condition of the indoor heat exchanger detected by the humidity sensor;

S204, determining whether the humidity parameter RH is greater than the humidity threshold RHn, if yes, executing step S205, if not, executing step S210;

In this embodiment, the preferred value of the humidity threshold RHn is 75% relative humidity;

S205. The air conditioner performs a cleaning mode and enters a frosting stage;

S206, determining whether the preset frosting completion condition is satisfied, if yes, proceeding to step S207, and if not, returning to step S205;

Here, the air conditioner may preset one or more frosting completion conditions, for example, a condensation completion condition is a preset condensation duration, and when the condensation phase of the air conditioner reaches the condensation duration, it may be determined that the condensation is satisfied. The frost completion condition, if the frosting duration has not been reached, it may be determined that the frosting completion condition is not satisfied; this document is not limited thereto;

S207, the air conditioner enters a defrost stage;

S208, it is determined whether the defrosting completion condition is satisfied, if yes, step S209 is performed, and if not, returning to step S207;

Here, the air conditioner may also preset one or more defrosting completion conditions. Similarly, a defrosting completion condition is a preset defrosting duration, and when the defrosting phase of the air conditioner reaches the defrosting duration, it may be determined. Satisfying the defrosting completion condition, if the defrosting duration has not been reached, it may be determined that the defrosting completion condition is not satisfied; this document is not limited thereto;

S209. The air conditioner exits the self-cleaning mode; the process ends;

S210. Calculate an absolute value of a humidity difference between the humidity parameter RH and the humidity threshold RHn.

S211. Determine, according to a preset association relationship, a spray parameter whose absolute value matches;

Here, the air conditioner is pre-set with one or more sets of spray parameters, and each set of spray parameters corresponds to an absolute value of a humidity difference, so that the spray parameters matched by the absolute values can be determined according to the one-to-one correspondence relationship;

S212, enabling a sprinkler device, and adjusting the sprinkler device to the spray parameter;

S213. The air conditioner performs a cleaning mode and enters a frosting stage;

S214, determining whether the preset frosting completion condition is satisfied, if yes, proceeding to step S215, and if not, returning to step S213;

Here, the frosting completion condition can refer to the foregoing step S206, and no further description is made here;

S215, the air conditioner deactivates the shower device, and performs step S216;

S216, the air conditioner enters a defrost stage;

S217, it is determined whether the defrosting completion condition is satisfied, if yes, step S218 is performed, and if not, returning to step S216;

Here, the frosting completion condition can refer to the foregoing step S208, and no further description is made here;

S218. The air conditioner exits the self-cleaning mode; the process ends.

FIG. 3 is a structural block diagram 1 of a control device for an air conditioner according to an exemplary embodiment.

As shown in FIG. 3, there is also provided a control device for an air conditioner, which can be applied to the aforementioned air conditioner having a shower device capable of spraying condensed water to an indoor heat exchanger, and controls the air conditioner to execute the foregoing embodiment. The control flow defined by the control method disclosed in the control method; specifically, the control device 300 includes:

The obtaining unit 310 is configured to acquire a humidity parameter of the indoor heat exchanger in response to a self-cleaning instruction input by the user for indicating that the self-cleaning mode is enabled;

The comparing unit 320 is configured to compare the humidity parameter with a preset humidity threshold to obtain a comparison result for indicating whether to activate the shower device;

The first response unit 330 is configured to control the activation of the shower device and switch to the self-cleaning mode operation in response to the comparison result of the activation of the shower device.

The air conditioner control device provided herein can collect the humidity parameter of the indoor heat exchanger in which the frosting occurs, and judge whether the humidity requirement of the self-cleaning frosting stage of the air conditioner is satisfied, so that the spray can be activated without satisfying the humidity requirement. The leaching device increases the moisture demand of the air conditioning self-cleaning condensation stage by the condensed water sprayed through the spray device, thereby ensuring the cleaning efficiency and dust removal effect of the air conditioner self-cleaning.

FIG. 4 is a structural block diagram 2 of a control apparatus for an air conditioner according to an exemplary embodiment.

As shown in FIG. 4, a control device is further provided. The control device 400 includes an acquisition unit 410, a comparison unit 420, a first response unit 430, a second response unit 440, a shutdown unit 450, and a shower adjustment unit 460.

The obtaining unit 410 is configured to obtain a humidity parameter of the indoor heat exchanger in response to a self-cleaning instruction input by the user for indicating that the self-cleaning mode is enabled.

The comparing unit 420 is configured to compare the humidity parameter with a preset humidity threshold to obtain a comparison result for indicating whether the shower device is enabled or not;

The first response unit 430 is configured to control the activation of the shower device and switch to the self-cleaning mode operation in response to the comparison result of the activation of the shower device.

In an optional embodiment, the second response unit 440 is configured to control the air conditioner to switch to the self-cleaning mode operation in response to the comparison result of not enabling the shower device.

In an optional embodiment, the comparing unit 420 is specifically configured to:

When the humidity parameter is less than the humidity threshold, a comparison result for indicating the activation of the shower device is obtained;

When the humidity parameter is greater than or equal to the humidity threshold, a comparison result indicating that the shower device is not activated is obtained.

In an alternative embodiment, the unit 450 is closed for controlling the shutdown of the sprinkler prior to the start of the defrost phase.

In an optional embodiment, the spray adjustment unit 460 is configured to adjust the spray parameters of the spray device according to the humidity difference between the humidity parameter and the humidity threshold before controlling the spray device to be activated.

It should be understood that the present invention is not limited to the details and the modifications and changes may be made without departing from the scope thereof. The scope of the disclosure is limited only by the accompanying claims.

Claims (10)

  1. A method for controlling an air conditioner, characterized in that the air conditioner has a shower device that can spray condensed water to an indoor heat exchanger; the control method includes:
    Acquiring the humidity parameter of the indoor heat exchanger in response to a self-cleaning instruction input by the user for indicating that the self-cleaning mode is enabled;
    Comparing the humidity parameter with a preset humidity threshold to obtain a comparison result for indicating whether to activate the shower device;
    In response to the comparison result of enabling the sprinkler, control activates the sprinkler and switches to self-clean mode operation.
  2. The control method according to claim 1, wherein the control method further comprises:
    The control air conditioner is switched to the self-cleaning mode operation in response to a comparison result that the shower device is not activated.
  3. The control method according to claim 1 or 2, wherein the comparing the humidity parameter with a preset humidity threshold to obtain a comparison result for indicating whether to activate the shower device comprises:
    When the humidity parameter is less than the humidity threshold, obtaining a comparison result for indicating activation of the shower device;
    When the humidity parameter is greater than or equal to the humidity threshold, a comparison result indicating that the shower device is not activated is obtained.
  4. The control method according to claim 1, wherein the self-cleaning mode comprises a frosting phase and a defrosting phase which are sequentially performed;
    The control method further includes controlling to close the shower device before the defrosting phase begins.
  5. The control method according to claim 1, wherein the control method further comprises: before the controlling the spraying device is enabled;
    And adjusting a spray parameter of the shower device according to the humidity parameter and the humidity difference of the humidity threshold.
  6. A control device for an air conditioner, characterized in that the air conditioner has a shower device that can spray condensed water to an indoor heat exchanger; the control device includes:
    An obtaining unit, configured to obtain a humidity parameter of the indoor heat exchanger in response to a self-cleaning instruction input by the user for indicating that the self-cleaning mode is enabled;
    a comparison unit, configured to compare the humidity parameter with a preset humidity threshold to obtain a comparison result for indicating whether to enable the shower device;
    The first response unit is configured to control the activation of the shower device and switch to the self-cleaning mode operation in response to the comparison result of enabling the shower device.
  7. The control device according to claim 6, wherein the control device further comprises:
    And a second response unit, configured to control the air conditioner to switch to the self-cleaning mode operation in response to the comparison result that the shower device is not activated.
  8. The control device according to claim 6 or 7, wherein the comparing unit is specifically configured to:
    When the humidity parameter is less than the humidity threshold, obtaining a comparison result for indicating activation of the shower device;
    When the humidity parameter is greater than or equal to the humidity threshold, a comparison result indicating that the shower device is not activated is obtained.
  9. The control device according to claim 6, wherein the self-cleaning mode comprises a frosting phase and a defrosting phase which are sequentially performed;
    The control device also includes a shutdown unit for controlling the shutdown of the shower device prior to the start of the defrost phase.
  10. The control device according to claim 6, wherein the control device further comprises a spray adjustment unit for:
    Before the controlling to activate the sprinkler device, adjusting a spray parameter of the sprinkler device according to a humidity difference between the humidity parameter and the humidity threshold.
PCT/CN2018/114878 2018-01-26 2018-11-09 Control method and apparatus for air conditioner WO2019144675A1 (en)

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CN108413558A (en) * 2018-01-26 2018-08-17 青岛海尔空调器有限总公司 A kind of control method and device of air-conditioning
CN110873397A (en) * 2018-08-31 2020-03-10 青岛海尔空调器有限总公司 Air conditioner and self-cleaning control method thereof
CN110873402A (en) * 2018-08-31 2020-03-10 青岛海尔空调器有限总公司 Air conditioner and self-cleaning control method thereof
CN110873401A (en) * 2018-08-31 2020-03-10 青岛海尔空调器有限总公司 Air conditioner and self-cleaning control method thereof
CN110873394A (en) * 2018-08-31 2020-03-10 青岛海尔空调器有限总公司 Air conditioner and self-cleaning control method thereof
CN110887155A (en) * 2018-09-10 2020-03-17 青岛海尔空调器有限总公司 Automatic cleaning control method and device for air conditioner
CN110906454A (en) * 2018-09-18 2020-03-24 青岛海尔空调器有限总公司 Air conditioner and control method for air conditioner
CN110906451A (en) * 2018-09-18 2020-03-24 青岛海尔空调器有限总公司 Air conditioner and control method for air conditioner
CN109341017A (en) * 2018-10-31 2019-02-15 奥克斯空调股份有限公司 A kind of outdoor machine of air-conditioner Humidity Detection guard method, device and air conditioner
CN109916053A (en) * 2019-03-21 2019-06-21 青岛海尔空调器有限总公司 Air conditioner automatically cleaning control method and air conditioner
CN109916008A (en) * 2019-03-21 2019-06-21 青岛海尔空调器有限总公司 Air conditioner automatically cleaning humidifying controlling method
CN109916002B (en) * 2019-03-21 2020-11-03 青岛海尔空调器有限总公司 Self-cleaning humidification control method for air conditioner
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