CN114963426A - Constant-temperature dehumidification method and system for air conditioner, storage medium and air conditioner - Google Patents

Constant-temperature dehumidification method and system for air conditioner, storage medium and air conditioner Download PDF

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Publication number
CN114963426A
CN114963426A CN202210430055.0A CN202210430055A CN114963426A CN 114963426 A CN114963426 A CN 114963426A CN 202210430055 A CN202210430055 A CN 202210430055A CN 114963426 A CN114963426 A CN 114963426A
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CN
China
Prior art keywords
indoor unit
temperature information
target
expansion valve
electronic expansion
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CN202210430055.0A
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Chinese (zh)
Inventor
宋龙
吕福俊
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Priority to CN202210430055.0A priority Critical patent/CN114963426A/en
Publication of CN114963426A publication Critical patent/CN114963426A/en
Pending legal-status Critical Current

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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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention provides a constant temperature dehumidification method and system for an air conditioner, a storage medium and the air conditioner, wherein the constant temperature dehumidification method comprises the following steps: opening a target electronic expansion valve, and adjusting the opening degree of the target electronic expansion valve to be a target opening degree; the target opening is determined based on the frequency of an air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit; and regulating and controlling the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information so as to control the difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant. The invention ensures that the temperature of the air inlet and the temperature of the air outlet of the indoor unit are kept constant while realizing the dehumidification effect, can effectively realize the indoor constant-temperature dehumidification effect, avoids the technical defect that the body surface of a user is uncomfortable easily caused in the dehumidification process in the prior art, and has good user experience.

Description

Constant-temperature dehumidification method and system for air conditioner, storage medium and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a constant-temperature dehumidification method and system for an air conditioner, a storage medium and the air conditioner.
Background
Along with the continuous development of the intelligent home technology, in order to meet the increasing experience requirements of users, the design of the air conditioner is more energy-saving and environment-friendly, and the functions are more diversified.
The existing air conditioner generally has a dehumidification function, and can well meet the requirements of users in regions with heavy moisture. However, in the prior art, when the air conditioner dehumidifies, the evaporator of the indoor unit is in a low-temperature state, and the air outlet of the indoor unit blows out cold air, so that the indoor temperature is rapidly reduced, discomfort of the body surface of a user is easily caused, and the user experience is poor.
Disclosure of Invention
The invention provides a constant-temperature dehumidification method and system for an air conditioner, a storage medium and the air conditioner, which are used for solving the defects that in the prior art, when the air conditioner dehumidifies, the body surface of a user is easily uncomfortable, and the user experience is poor.
The invention provides a constant temperature dehumidification method of an air conditioner, which comprises the following steps:
opening a target electronic expansion valve, and adjusting the opening degree of the target electronic expansion valve to be a target opening degree; the target opening is determined based on the frequency of an air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit;
and regulating and controlling the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information so as to control the difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.
According to the constant temperature dehumidification method of the air conditioner, provided by the invention, the method for determining the target opening based on the frequency of an air conditioner compressor, the air inlet temperature information of an indoor unit and the air outlet temperature information of the indoor unit comprises the following steps:
calculating a difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information based on the frequency of the air-conditioning compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, and calculating a target product based on the difference value, the frequency of the air-conditioning compressor and a preset correction coefficient;
and obtaining the target opening degree of the target electronic expansion valve according to the target product and a preset constant.
According to the constant temperature dehumidification method of the air conditioner provided by the invention, the target opening degree of the target electronic expansion valve is regulated and controlled according to the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit, and the method comprises the following steps:
under the condition that the air conditioner is detected to be in a constant-temperature dehumidification mode and the air inlet temperature information of the indoor unit is the same as the air outlet temperature information of the indoor unit, adjusting the opening degree of the target electronic expansion valve from the target opening degree to the opening degree corresponding to the preset constant, and keeping the opening degree of the target electronic expansion valve to be the opening degree corresponding to the preset constant;
or the like, or, alternatively,
under the condition that the air conditioner is detected to be in a constant temperature dehumidification mode and the temperature information of the air inlet of the indoor unit is larger than the temperature information of the air outlet of the indoor unit, increasing the opening of the target electronic expansion valve on the basis of the target opening according to a first target speed;
or the like, or, alternatively,
and reducing the opening degree of the target electronic expansion valve on the basis of the target opening degree according to a second target speed under the condition that the air conditioner is detected to be in a constant-temperature dehumidification mode and the temperature information of the air inlet of the indoor unit is smaller than the temperature information of the air outlet of the indoor unit.
According to the constant temperature dehumidification method of the air conditioner provided by the invention, before the target electronic expansion valve is opened and the opening degree of the target electronic expansion valve is adjusted to be the target opening degree, the method further comprises the following steps:
under the condition that the air conditioner is detected not to be operated in the constant temperature dehumidification mode, the current preset mode is kept to operate, and indoor temperature information and indoor humidity information are obtained;
and acquiring the frequency of the air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit under the condition that the indoor temperature information is lower than a target temperature threshold and the indoor humidity information is higher than a first humidity threshold.
According to the constant temperature dehumidification method of the air conditioner provided by the invention, the target opening degree of the target electronic expansion valve is regulated and controlled according to the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit, and the method comprises the following steps:
under the condition that the difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information is equal to a target threshold value, adjusting the opening degree of the target electronic expansion valve from the target opening degree to the opening degree corresponding to the preset constant, and keeping the opening degree of the target electronic expansion valve to be the opening degree corresponding to the preset constant;
or the like, or, alternatively,
under the condition that the difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information is larger than the target threshold value, increasing the opening degree of the target electronic expansion valve on the basis of the target opening degree according to a first target speed;
or the like, or, alternatively,
and reducing the opening degree of the target electronic expansion valve on the basis of the target opening degree according to a second target speed under the condition that the air conditioner is detected to be in a constant-temperature dehumidification mode and the difference value between the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit is smaller than the target threshold value.
According to the constant temperature dehumidification method of the air conditioner provided by the invention, after the target opening degree of the target electronic expansion valve is regulated and controlled according to the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit, the constant temperature dehumidification method further comprises the following steps:
under the condition that the indoor humidity information is detected to be smaller than a second humidity threshold value, closing the target electronic expansion valve;
and switching the running mode of the air conditioner back to the current preset mode.
The present invention also provides a constant temperature dehumidification system of an air conditioner, comprising:
the starting module is used for starting the target electronic expansion valve and adjusting the opening degree of the target electronic expansion valve to be a target opening degree; the target opening is determined based on the frequency of an air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit;
and the regulating and controlling module is used for regulating and controlling the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information so as to control the difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.
The invention also provides an air conditioner, which comprises an indoor unit and an outdoor unit, wherein the outdoor unit comprises a condenser, an air conditioner compressor, a control device and a target electronic expansion valve, the indoor unit comprises an evaporator, a capillary tube, a temperature sensor and a humidity sensor, the target electronic expansion valve is arranged on a communication pipeline between an exhaust port of the air conditioner compressor and an air inlet of the capillary tube, and the air conditioner compressor, the target electronic expansion valve, the temperature sensor and the humidity sensor are respectively and electrically connected with the control device;
the control device comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, and when the processor executes the program, the constant temperature dehumidification method of the air conditioner is realized.
The present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the air conditioner constant temperature dehumidification method as described in any one of the above.
The invention also provides a computer program product comprising a computer program, wherein the computer program is used for realizing the constant-temperature dehumidification method of the air conditioner when being executed by the processor.
According to the constant-temperature dehumidification method and system for the air conditioner, the storage medium and the air conditioner, the target electronic expansion valve is added, the target electronic expansion valve can control the flow of high-temperature gaseous refrigerants in the capillary tube of the indoor unit, and when a user starts the dehumidification function of the air conditioner, the target opening degree of the target electronic expansion valve is calculated by acquiring the frequency of an air conditioner compressor, the temperature information of the air inlet of the indoor unit and the temperature information of the air outlet of the indoor unit; opening a target electronic expansion valve, adjusting the opening of the target electronic expansion valve to be a target opening, and further effectively regulating and controlling the target opening of the target electronic expansion valve according to the temperature information of the air inlet of the indoor unit and the temperature information of the air outlet of the indoor unit, so that the flow of the high-temperature gaseous refrigerant in the capillary tube of the indoor unit can be dynamically regulated according to the change of the temperature of the air inlet of the indoor unit and the temperature of the air outlet of the indoor unit, and the difference value between the temperature information of the air inlet of the indoor unit and the temperature information of the air outlet of the indoor unit is controlled to be constant, thereby effectively controlling the heat released by the flow of the high-temperature gaseous refrigerant in the capillary tube while realizing the dehumidification effect, carrying out accurate temperature compensation on the dehumidified blowing air flow, ensuring that the temperature of the air inlet and the air outlet of the indoor unit are kept constant, effectively realizing the effect of indoor constant-temperature dehumidification, and avoiding the technical defect that the discomfort of the body surface of a user is easily caused in the dehumidification process in the prior art, the user experience is good.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic view of a system structure of an air conditioner provided by the present invention;
FIG. 2 is a schematic flow chart of a constant temperature dehumidification method of an air conditioner provided by the invention;
fig. 3 is a schematic structural diagram of an air conditioner constant temperature dehumidification system provided by the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The constant temperature dehumidification method, the system, the storage medium and the air conditioner of the present invention are described below with reference to fig. 1 to 3.
Fig. 1 is a schematic system structure diagram of an air conditioner according to the present invention, and as shown in fig. 1, the air conditioner includes an indoor unit and an outdoor unit;
the outdoor unit comprises a condenser, an air-conditioning compressor, a control device and a target electronic expansion valve, the indoor unit comprises an evaporator, a capillary tube, a temperature sensor and a humidity sensor, the target electronic expansion valve is arranged on a communication pipeline between an air outlet of the air-conditioning compressor and an air inlet of the capillary tube, and the air-conditioning compressor, the target electronic expansion valve, the temperature sensor and the humidity sensor are respectively and electrically connected with the control device;
the control device comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, and when the processor executes the program, the air conditioner constant temperature dehumidification method based on the compressor frequency control provided by the invention can be executed.
In this embodiment, the temperature sensor may be configured to detect air inlet temperature information and air outlet temperature information of the indoor unit, detect an indoor environment temperature, and send the detected temperature information to the control device; the humidity sensor may be configured to detect an indoor ambient humidity and transmit the detected indoor ambient humidity information to the control device.
In this embodiment, the air conditioner dehumidifies the room, and simultaneously, a high-temperature gaseous refrigerant is led out through an exhaust port of the air conditioner compressor, and the refrigerant passes through the condenser, the throttling device and the evaporator, returns to the air conditioner compressor, and circulates back and forth. After the target electronic expansion valve is adjusted, the capillary tube is placed below the evaporator, so that the capillary tube transmits the high-temperature refrigerant temperature to the room;
the air inlet of the indoor unit sucks air firstly, the air is liquefied when meeting cold after the heat absorption of the evaporator and is changed into condensed water to be discharged out of the indoor unit, so that the dehumidification effect is achieved, the cold air passes through the high-temperature capillary tube to absorb the heat of the capillary tube while the evaporator dehumidifies and reduces the temperature, the temperature of the cold air is raised, the temperature of the air inlet and the air outlet of the indoor unit of the air conditioner is the same, the purpose of not reducing the indoor temperature is achieved, and the indoor constant-temperature dehumidification mode and other modes are adjusted.
Fig. 2 is a schematic flow chart of a constant temperature dehumidification method for an air conditioner, as shown in fig. 2, including:
step 110, opening a target electronic expansion valve, and adjusting the opening degree of the target electronic expansion valve to be a target opening degree; the target opening is determined based on the frequency of an air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit;
specifically, in the embodiment of the present invention, the target electronic expansion valve refers to an electronic expansion valve that is provided in advance on a communication pipe between an air conditioner compressor discharge port and a capillary tube intake port. The flow of high-temperature gaseous refrigerant in the capillary tube of the indoor unit can be controlled by adjusting the opening degree of the target electronic expansion valve, so that the heat released to the space by the capillary tube can be controlled, the cold air gas at the air outlet of the evaporator is effectively heated, and the effect of temperature compensation is realized.
In the embodiment of the invention, the target opening degree refers to an opening degree value which is obtained by calculating the target electronic expansion valve to be executed by detecting the frequency of an air conditioner compressor, the air inlet temperature information of an indoor unit and the air outlet temperature information of the indoor unit when the air conditioner runs.
In this embodiment, the control device may obtain an operation frequency of the air conditioner compressor, obtain air inlet temperature information and air outlet temperature information of the indoor unit through a temperature sensor and a humidity sensor of the indoor unit, and further obtain a target opening degree of the target electronic expansion valve according to the frequency of the air conditioner compressor, the air inlet temperature information of the indoor unit, the air outlet temperature information of the indoor unit, and a preset calculation manner.
It should be noted that, in some embodiments, the opening degree of the target electronic expansion valve used in the present invention ranges from 0 to 480 steps, i.e., the opening degree adjustment range of P1 ranges from 0 to 480 steps.
In this embodiment, by using the target electronic expansion valve with a large opening range, the opening of the target electronic expansion valve can be regulated and controlled in a large range in the dehumidification process of the air conditioner, so that the heat compensation of the capillary tube of the indoor unit on the gas at the air outlet of the evaporator can be controlled more accurately, and the constant-temperature dehumidification effect of the air conditioner can be more effectively realized.
In some embodiments, a method of determining a target opening degree of a target electronic expansion valve based on a frequency of an air conditioner compressor, indoor unit inlet air temperature information, and indoor unit outlet air temperature information, comprises:
calculating a difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information based on the frequency of the air-conditioning compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, and calculating a target product based on the difference value, the frequency of the air-conditioning compressor and a preset correction coefficient;
and obtaining the target opening degree of the target electronic expansion valve according to the target product and a preset constant.
Specifically, in the embodiment of the present invention, the preset correction coefficient refers to a preset calculation coefficient, which may be used for performing calculation processing on parameters of different units to correct a calculation result, so as to ensure that a target opening degree of a target electronic expansion valve is within a set opening degree adjustment range (e.g., 0 to 480 steps), and a specific value thereof may be determined according to an actual matching number and an energy efficiency level of an air conditioner, which is not specifically limited by the present invention.
The preset constant described in the embodiment of the present invention refers to a calculation constant set in advance for calculating the opening degree of the target electronic expansion valve.
Optionally, in the embodiment of the present invention, the preset constant may be 240.
More specifically, in the embodiment of the present invention, different calculation manners of the target opening degree of the target electronic expansion valve are determined for different operation scenarios of the air conditioner.
In this embodiment, in a scenario where the air conditioner is in the constant temperature dehumidification mode, the target opening degree of the target electronic expansion valve may be determined according to a first formula P1 ═ a (T1-T2) H +240, where H denotes a frequency of the air conditioner compressor, T1 denotes indoor unit inlet air temperature information, T2 denotes indoor unit outlet air temperature information, and a denotes a preset correction coefficient.
In this embodiment, in a scenario where the air conditioner is not in the constant temperature dehumidification mode, the target opening degree of the target electronic expansion valve may also be determined according to a second formula P2 ═ a (T1-T2-8) H +240, where H denotes a frequency of the air conditioner compressor, T1 denotes indoor unit air inlet temperature information, T2 denotes indoor unit air outlet temperature information, and a denotes a preset correction coefficient.
Further, after the frequency of the air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit are obtained, a difference value between the air inlet temperature information T1 of the indoor unit and the air outlet temperature information T2 of the indoor unit can be calculated according to the formula, and a target product is calculated based on the difference value, the frequency of the air conditioner compressor and a preset correction coefficient, so that a product value of A (T1-T2) H or a product value of A (T1-T2-8) H is obtained; and then calculates the target opening degree of the target electronic expansion valve according to the sum of the target product and the preset constant 240.
According to the method provided by the embodiment of the invention, the opening of the target electronic expansion valve is determined based on the frequency of the air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit by considering the operating frequency characteristic of the air conditioner compressor and the influence of the inlet and outlet temperature of the indoor unit on the dehumidification effect of the air conditioner, so that the selection and the effective regulation of the opening of the target electronic expansion valve are realized, the heat released by the flow of high-temperature gaseous refrigerant in the capillary tube is controlled, and the constant-temperature dehumidification effect of the air conditioner is favorably realized.
In the embodiment of the invention, the target opening degree of the target electronic expansion valve can be adjusted after the target opening degree of the target electronic expansion valve is calculated according to the frequency of the air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit.
Further, after the user opens the air conditioner to dehumidify air, the control device may send an opening instruction to the target electronic expansion valve, open the target electronic expansion valve, and adjust the opening degree of the target electronic expansion valve to a target opening degree, so that the opening degree of the target electronic expansion valve may be dynamically adjusted and controlled according to the current operating frequency of the air conditioner compressor and the change of the temperature of the air inlet and the air outlet of the indoor unit, so as to adjust the flow rate of the gaseous refrigerant in the air pipeline inside the air conditioner, thereby controlling the heat released by the flow rate of the high-temperature gaseous refrigerant in the capillary tube.
And 120, regulating and controlling the target opening of the target electronic expansion valve according to the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit so as to control the difference value between the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit to be constant.
In the embodiment of the invention, in order to achieve a high-quality constant-temperature dehumidification effect, the change conditions of the temperature information of the air inlet of the indoor unit and the temperature information of the air outlet of the indoor unit are monitored in real time, and the opening degree of the target electronic expansion valve is adjusted based on the temperature difference of the inlet and the outlet of the indoor unit, so that the temperature difference of the inlet and the outlet of the indoor unit is maintained at a stable level.
Further, in this embodiment, after the target electronic expansion valve is at the target opening, the temperature sensor of the indoor unit can be used to collect the temperature information of the air inlet of the indoor unit and the temperature information of the air outlet of the indoor unit in real time, and the temperature difference between the air inlet and the air outlet of the indoor unit is determined according to the temperature information of the air inlet of the indoor unit and the temperature information of the air outlet of the indoor unit, so as to regulate and control the target opening of the target electronic expansion valve, so as to control the difference between the temperature information of the air inlet of the indoor unit and the temperature information of the air outlet of the indoor unit to be constant.
According to the constant temperature dehumidification method of the air conditioner, the target electronic expansion valve is added, the target electronic expansion valve can control the flow of high-temperature gaseous refrigerants in the capillary tube of the indoor unit, and when a user starts the dehumidification function of the air conditioner, the target opening degree of the target electronic expansion valve is calculated by acquiring the frequency of an air conditioner compressor, the temperature information of the air inlet of the indoor unit and the temperature information of the air outlet of the indoor unit; opening a target electronic expansion valve, adjusting the opening of the target electronic expansion valve to be a target opening, and further effectively regulating and controlling the target opening of the target electronic expansion valve according to the temperature information of the air inlet of the indoor unit and the temperature information of the air outlet of the indoor unit, so that the flow of the high-temperature gaseous refrigerant in the capillary tube of the indoor unit can be dynamically regulated according to the change of the temperature of the air inlet of the indoor unit and the temperature of the air outlet of the indoor unit, and the difference value between the temperature information of the air inlet of the indoor unit and the temperature information of the air outlet of the indoor unit is controlled to be constant, thereby effectively controlling the heat released by the flow of the high-temperature gaseous refrigerant in the capillary tube while realizing the dehumidification effect, carrying out accurate temperature compensation on the dehumidified blowing air flow, ensuring that the temperature of the air inlet and the air outlet of the indoor unit are kept constant, effectively realizing the effect of indoor constant-temperature dehumidification, and avoiding the technical defect that the discomfort of the body surface of a user is easily caused in the dehumidification process in the prior art, the user experience is good.
Based on the content of the foregoing embodiment, as an optional embodiment, the controlling the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information includes:
under the condition that the air conditioner is detected to be in a constant-temperature dehumidification mode and the air inlet temperature information of the indoor unit is the same as the air outlet temperature information of the indoor unit, adjusting the opening degree of the target electronic expansion valve from the target opening degree to the opening degree corresponding to the preset constant, and keeping the opening degree of the target electronic expansion valve to be the opening degree corresponding to the preset constant;
or the like, or a combination thereof,
under the condition that the air conditioner is detected to be in a constant temperature dehumidification mode and the temperature information of the air inlet of the indoor unit is larger than the temperature information of the air outlet of the indoor unit, increasing the opening degree of a target electronic expansion valve on the basis of the target opening degree according to a first target speed;
or the like, or, alternatively,
and reducing the opening degree of the target electronic expansion valve on the basis of the target opening degree according to a second target speed under the condition that the air conditioner is detected to be in a constant-temperature dehumidification mode and the temperature information of the air inlet of the indoor unit is smaller than the temperature information of the air outlet of the indoor unit.
Specifically, in the embodiment of the present invention, the first target rate refers to a preset value of the rate of increase of the target electronic expansion valve opening degree. Alternatively, the first target rate may be set to 1 degree per 1 second.
In the embodiment of the present invention, the second target rate refers to a reduction rate value of the preset target electronic expansion valve opening degree. Alternatively, the second target rate may be set to 1 degree per 1 second.
In the embodiment of the invention, when a user starts the operation of the air conditioner, and when the constant temperature dehumidification mode is selected, the air conditioner is switched to the constant temperature dehumidification mode operation, at the moment, the compressor of the air conditioner is started to operate, the target electronic expansion valve is also opened at the same time, according to the opening calculation mode and the first formula, the target opening of the target electronic expansion valve is determined, the opening of the target electronic expansion valve is adjusted to be the target opening, and the indoor constant temperature dehumidification treatment is carried out.
In some embodiments, during the operation of the air conditioner, when it is detected that the air conditioner is in the constant temperature dehumidification mode and the indoor unit air inlet temperature information is the same as the indoor unit air outlet temperature information, that is, T1 is T2, based on the current frequency H of the air conditioner compressor, the indoor unit air inlet temperature information T1, and the indoor unit air outlet temperature information T2, the opening degree of the target electronic expansion valve is determined to be an opening degree corresponding to a preset constant according to the first formula, in step 240, the opening degree of the target electronic expansion valve is adjusted from the target opening degree to an opening degree corresponding to the preset constant, and the opening degree of the target electronic expansion valve is maintained to be the opening degree corresponding to the preset constant.
In some embodiments, during the operation of the air conditioner, when it is detected that the air conditioner is in the constant temperature dehumidification mode, and the indoor unit air inlet temperature information T1 is greater than the indoor unit air outlet temperature information T2, that is, T1 > T2, that is, when the target electronic expansion valve is at the target opening degree, the air inlet temperature of the indoor unit is higher than the air outlet temperature of the indoor unit, the temperature compensation provided by the capillary tube of the indoor unit to the air outlet airflow through the high temperature gaseous refrigerant is insufficient, and thus the opening degree of the target electronic expansion valve needs to be further increased to increase the flow rate of the high temperature gaseous refrigerant in the capillary tube;
further, in this embodiment, according to a first target rate, for example, 1 opening/1 second, on the basis of the target opening, the opening of the target electronic expansion valve is gradually increased, and the flow rate of the high-temperature gaseous refrigerant in the capillary tube is increased, so that the temperature information of the air outlet of the indoor unit is controlled to be consistent with the temperature information of the air inlet, and the constant-temperature dehumidification effect is achieved.
In some embodiments, during the operation of the air conditioner, when it is detected that the air conditioner is in the constant temperature dehumidification mode, and the indoor unit air inlet temperature information T1 is less than the indoor unit air outlet temperature information T2, that is, T1 is less than T2, that is, when the target electronic expansion valve is at the target opening degree, the air inlet temperature of the indoor unit is less than the air outlet temperature of the indoor unit, the temperature compensation provided by the capillary tube of the indoor unit to the air outlet airflow through the high temperature gaseous refrigerant is excessive, so that the opening degree of the target electronic expansion valve needs to be decreased to reduce the flow rate of the high temperature gaseous refrigerant in the capillary tube;
further, in this embodiment, according to a second target rate, for example, 1 opening/1 second, on the basis of the target opening, the opening of the target electronic expansion valve is gradually decreased, and the flow rate of the high-temperature gaseous refrigerant in the capillary tube is decreased, so that the temperature information of the air outlet of the indoor unit is controlled to be consistent with the temperature information of the air inlet, and the constant-temperature dehumidification effect is achieved.
According to the method provided by the embodiment of the invention, under the scene that the air conditioner is in the constant-temperature dehumidification mode, the opening degree of the target electronic expansion valve is regulated and controlled by directly acquiring whether the temperature information of the air inlet and the temperature information of the air outlet of the indoor unit are the same or not, so that the flow of high-temperature gaseous refrigerants in the capillary tube of the indoor unit can be effectively controlled, the temperature of the air inlet and the temperature of the air outlet of the indoor unit are always kept consistent, and the high-quality indoor constant-temperature dehumidification effect is realized.
Based on the content of the foregoing embodiment, as an optional embodiment, before opening a target electronic expansion valve and adjusting an opening degree of the target electronic expansion valve to a target opening degree, the method further includes:
under the condition that the air conditioner is detected not to be operated in the constant temperature dehumidification mode, the current preset mode is kept to operate, and indoor temperature information and indoor humidity information are obtained;
and under the condition that the indoor temperature information is lower than the target temperature threshold and the indoor humidity information is higher than the first humidity threshold, acquiring the frequency of the air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit.
Specifically, in the embodiment of the present invention, the target temperature threshold refers to a preset temperature threshold, which is used for comparing with the detected indoor temperature to determine whether to open the target electronic expansion valve when the air conditioner is not in the constant temperature dehumidification mode.
Alternatively, in the present embodiment, the target temperature threshold may be 26 ℃.
In the embodiment of the invention, the first humidity threshold refers to a preset humidity threshold, and is used for comparing with the detected indoor humidity and judging whether a target electronic expansion valve is opened or not when the air conditioner is not in the constant temperature dehumidification mode; the humidity range is determined according to the comfortable humidity range of the human body surface, wherein the humidity range of the human body surface comfort is 45-65%.
Alternatively, in this embodiment, the first humidity threshold may be 70%.
In the embodiment of the present invention, the air conditioner is not in the constant temperature dehumidification mode means that when the user selects the normal mode to operate the refrigeration or dehumidification function, the air conditioner is in the preset mode, that is, the operation mode corresponding to the refrigeration or dehumidification function.
Further, in this embodiment, when it is detected that the air conditioner is not in the constant temperature dehumidification mode, the current preset mode is maintained to continue operating, and meanwhile, the indoor temperature information and the indoor humidity information are respectively obtained through a temperature sensor and a humidity sensor in the indoor unit;
and under the condition that the indoor temperature information is lower than a target temperature threshold value, such as 26 ℃, and the indoor humidity information is higher than a first humidity threshold value, such as 70%, acquiring the frequency of the air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit, further calculating the target opening degree of the target electronic expansion valve according to the frequency of the air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit, and starting the target electronic expansion valve to perform indoor dehumidification processing.
According to the method provided by the embodiment of the invention, under the scene that a user selects a common mode to operate a refrigeration or dehumidification function and the air conditioner is not in a constant temperature dehumidification mode, the target electronic expansion valve is started under the condition of meeting the preset temperature and humidity by monitoring the indoor temperature and humidity in real time, so that the air conditioner can perform constant temperature dehumidification, the effects of large-amount dehumidification and small-amount cooling can be realized under the condition that the user selects the common mode, and the comfort and the use experience of the user are improved.
Based on the content of the foregoing embodiment, as an optional embodiment, the controlling the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information includes:
under the condition that the difference value between the air inlet temperature information and the air outlet temperature information of the indoor unit is equal to a target threshold value, adjusting the opening degree of the target electronic expansion valve from the target opening degree to the opening degree corresponding to a preset constant, and keeping the opening degree of the target electronic expansion valve to the opening degree corresponding to the preset constant;
or the like, or, alternatively,
under the condition that the difference value between the air inlet temperature information and the air outlet temperature information of the indoor unit is larger than a target threshold value, increasing the opening degree of a target electronic expansion valve on the basis of the target opening degree according to a first target speed;
or the like, or, alternatively,
and reducing the opening degree of the target electronic expansion valve on the basis of the target opening degree according to a second target speed under the condition that the air conditioner is detected to be in a constant-temperature dehumidification mode and the difference value between the air inlet temperature information and the air outlet temperature information of the indoor unit is smaller than a target threshold value.
Specifically, in the embodiment of the present invention, the target threshold refers to a preset temperature threshold, which is used to determine a threshold range for regulating and controlling the target opening degree of the target electronic expansion valve when the air conditioner is not in the constant temperature dehumidification mode. Which can be set according to actual design requirements.
Optionally, in this embodiment, the target threshold may be set to 8 ℃.
In some embodiments, during the operation of the air conditioner, when it is detected that the air conditioner is not in the constant temperature dehumidification mode, that is, the air conditioner is in the normal mode to operate the cooling or dehumidification function, and the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information is equal to the target threshold, for example, T1-T2 is 8 ℃, based on the current frequency H of the air conditioner compressor, the indoor unit air inlet temperature information T1, and the indoor unit air outlet temperature information T2, the opening degree of the target electronic expansion valve is determined according to the second formula to be an opening degree corresponding to a preset constant, for example, 240 steps, that is, at this time, the opening degree of the target electronic expansion valve is adjusted from the target opening degree to an opening degree corresponding to the preset constant, and the opening degree of the target electronic expansion valve is maintained to be the opening degree corresponding to the preset constant. The scheme is used for increasing the dehumidification capacity while normal refrigeration is carried out, and meanwhile, the indoor temperature is too low due to too much refrigeration, so that the temperature of the air outlet of the indoor unit can be kept lower than the temperature of the air inlet by about 8 ℃.
In some embodiments, in the operation process of the air conditioner, when it is detected that the air conditioner is not in the constant temperature dehumidification mode, and the difference between the indoor unit inlet temperature information T1 and the indoor unit outlet temperature information T2 is greater than the target threshold, for example, T1-T2 > 8 ℃, T1-T2-8 is a positive number. That is to say, when the target electronic expansion valve is at the target opening degree, the temperature of the air inlet of the indoor unit is far higher than the temperature of the air outlet of the indoor unit, and the temperature compensation provided by the capillary tube of the indoor unit for the air flow of the air outlet through the high-temperature gaseous refrigerant is insufficient, so that the opening degree of the target electronic expansion valve needs to be increased to increase the flow rate of the high-temperature gaseous refrigerant in the capillary tube;
further, in this embodiment, according to a first target rate, for example, 1 opening/1 second, on the basis of the target opening, the opening of the target electronic expansion valve is gradually increased, and the flow rate of the high-temperature gaseous refrigerant in the capillary tube is increased, so as to control the temperature difference between the air outlet temperature information and the air inlet temperature information of the indoor unit to be constant, and enable the air conditioner to realize the functions of important dehumidification and small cooling.
In some embodiments, in the operation process of the air conditioner, when it is detected that the air conditioner is not in the constant temperature dehumidification mode, and the difference between the indoor unit inlet air temperature information T1 and the indoor unit outlet air temperature information T2 is smaller than the target threshold, i.e., T1-T2 < 8 ℃, T1-T2-8 is a negative number. That is, when the target electronic expansion valve is at the target opening degree, the temperature of the air inlet of the indoor unit is far lower than the temperature of the air outlet of the indoor unit, and the temperature compensation provided by the capillary tube of the indoor unit for the air flow of the air outlet through the high-temperature gaseous refrigerant is excessive, so that the opening degree of the target electronic expansion valve can be reduced, and the flow of the high-temperature gaseous refrigerant in the capillary tube can be reduced;
further, in this embodiment, according to a second target rate, for example, 1 opening/1 second, on the basis of the target opening, the opening of the target electronic expansion valve is gradually decreased, and the flow rate of the high-temperature gaseous refrigerant in the capillary tube is decreased, so as to control the temperature difference between the air outlet temperature information and the air inlet temperature information of the indoor unit to be constant, and enable the air conditioner to realize the functions of important dehumidification and small cooling.
According to the method provided by the embodiment of the invention, under the scene that the air conditioner is not in the constant-temperature dehumidification mode but in the refrigeration or dehumidification function operation in the common mode, the air inlet temperature information and the air outlet temperature information of the indoor unit are obtained, whether the opening degree of the target electronic expansion valve needs to be regulated and controlled is judged based on the target threshold value, the flow of high-temperature gaseous refrigerants in the capillary tube of the indoor unit can be effectively controlled, the condition that the temperature difference between the air inlet temperature and the air outlet temperature of the indoor unit is not too large and is within an acceptable range is ensured, the effects of large-amount dehumidification and small-amount cooling of the air conditioner are realized, and the use experience of a user is improved.
Based on the content of the foregoing embodiment, as an optional embodiment, after the controlling the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, the method further includes:
under the condition that the indoor humidity information is detected to be smaller than the second humidity threshold value, closing the target electronic expansion valve;
and switching the operation mode of the air conditioner back to the current preset mode.
Specifically, in the embodiment of the present invention, the second humidity threshold refers to another preset humidity threshold, which is used for comparing with the detected indoor humidity to determine whether the target electronic expansion valve needs to be closed after the air conditioner performs constant temperature dehumidification; it is also determined according to the range of humidity that the human body feels comfortable on the surface.
Alternatively, in this embodiment, the second humidity threshold may be 55%.
That is, in this embodiment, after detecting that the air conditioner is not in the constant temperature dehumidification mode, the target electronic expansion valve is opened, the target opening degree of the target electronic expansion valve is controlled, after the room is dehumidified at constant temperature, the control device controls the humidity sensor of the indoor unit to continuously detect the indoor humidity information, and after determining that the indoor humidity is reduced to 55%, the control device automatically closes the target electronic expansion valve, and switches the operation mode of the air conditioner back to the previous preset mode.
According to the method provided by the embodiment of the invention, when a user selects a common mode to operate a refrigeration or dehumidification function and the air conditioner is not in a constant-temperature dehumidification mode, after the target electronic expansion valve is started to enable the air conditioner to dehumidify the indoor constant temperature, the target electronic expansion valve is closed after the indoor humidity reaches a human body comfortable sensation interval by monitoring the humidity information of the indoor environment in real time, the operation mode of the air conditioner is switched back to the previous preset mode, the comfortable sensation of the user in the dehumidification process of the air conditioner is improved, the operation power consumption of the air conditioner is reduced, and the effects of energy conservation and emission reduction are realized.
In a specific embodiment, when a user starts the air conditioner operation, and when the constant temperature dehumidification mode is selected, the air conditioner switches to the constant temperature dehumidification mode operation, and then starts the air conditioner compressor operation, the target electronic expansion valve is also opened, and the target opening degree of the target electronic expansion valve is determined based on a first formula P1 ═ a (T1-T2) H +240, wherein the opening degree adjustment range of P1 is 0-480 steps. The refrigerant returns to the compressor through the condenser, the throttling device and the evaporator, and then circulates in a reciprocating way, wherein the indoor evaporator absorbs heat to dehumidify indoor air, then the cold air passes through a capillary tube issued by the evaporator, the cold air absorbs heat and then heats up due to the high-temperature gaseous refrigerant in the capillary tube, and the heated air is blown into the room, so that the air inlet temperature and the air outlet temperature are the same;
when detecting the indoor unit air inlet temperature information T1 and the indoor unit air outlet temperature information T2, controlling the opening degree of the target electronic expansion valve according to the temperatures of T1 and T2. When T1 is more than T2, if T1-T2 are positive numbers, the target opening degree of the target electronic expansion valve is regulated and controlled to be increased, and the adjustment rate, namely the first target rate is increased by 1 opening degree/1 second; when T1 is less than T2 and T1-T2 are negative numbers, regulating and controlling the target opening degree of the target electronic expansion valve to be reduced, and regulating the speed, namely the second target speed to be reduced by 1 opening degree/1 second; when the T1 is equal to T2, the target opening degree is adjusted to 240 steps and is kept unchanged;
when a user selects a common mode to operate a refrigeration or dehumidification function (the heating mode is that outdoor condensed water is frosted and constant-temperature dehumidification cannot be realized), the air conditioner operates according to normal logic at the moment, and indoor temperature and humidity data are detected in real time according to the temperature sensor and the humidity sensor. After the air conditioner is operated for a period of time, when the detected indoor temperature information is lower than 26 degrees, the operation is adjusted according to the value of the indoor humidity, when the indoor humidity information is higher than 70%, the indoor temperature is determined to be appropriate but the humidity is determined to be too high, so that the discomfort of a user is easily caused, at this time, the thermostatic dehumidification electronic expansion valve is opened, and the target opening degree of the target electronic expansion valve is determined based on a second formula P2 ═ A (T1-T2-8) H +240, wherein the opening degree adjustment range of P2 is 0-480. The purpose of opening the target electronic expansion valve at this moment is to realize the functions of the air conditioner for performing important dehumidification and small amount of cooling on the indoor space, and simultaneously, the opening adjustment of the target electronic expansion valve is changed according to the air inlet temperature information T1 of the indoor unit and the air outlet temperature information T2 of the indoor unit;
when T1 is more than T2+8, and T1-T2-8 is positive, the target opening degree of the target electronic expansion valve is regulated and controlled to be increased, and the regulation rate, namely the first target rate is increased by 1 opening degree/1 second; when T1 is less than T2+8 degrees, and T1-T2-8 is a negative number, regulating and controlling the target opening degree of the target electronic expansion valve to be reduced, wherein the regulation rate, namely the second target rate, is reduced by 1 opening degree/1 second; when T1 is T2+8 degrees, and T1-T2-8 is 0, adjusting the target opening to 240 steps and keeping the target opening unchanged;
in this embodiment, the above scheme is to increase the dehumidification capacity while performing normal refrigeration, and to prevent the indoor temperature from being too low due to excessive refrigeration, so that the temperature of the air outlet can be kept lower than the temperature of the air inlet by about 8 ℃.
When the indoor humidity information is detected to be less than 55%, the target electronic expansion valve is closed, the air conditioner continues to operate according to normal logic, and the scheme can be suitable for the common state of the fixed-frequency and variable-frequency air conditioners.
The air conditioner constant temperature dehumidification system provided by the invention is described below, and the air conditioner constant temperature dehumidification system described below and the air conditioner constant temperature dehumidification method described above can be referred to correspondingly.
Fig. 3 is a schematic structural diagram of an air conditioner constant temperature dehumidification system provided by the present invention, as shown in fig. 3, including:
an opening module 310, configured to open a target electronic expansion valve and adjust an opening degree of the target electronic expansion valve to a target opening degree; the target opening is determined based on the frequency of the air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit;
and a regulating and controlling module 320, configured to regulate and control a target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, so as to control a difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.
The air conditioner constant temperature dehumidification system described in this embodiment may be used to implement the above air conditioner constant temperature dehumidification method embodiments, and the principle and technical effect are similar, which are not described herein again.
According to the constant-temperature dehumidification system of the air conditioner, the target electronic expansion valve is added, the target electronic expansion valve can control the flow of high-temperature gaseous refrigerants in the capillary tube of the indoor unit, and when a user starts a dehumidification function of the air conditioner, the target opening degree of the target electronic expansion valve is calculated by acquiring the frequency of an air conditioner compressor, the temperature information of an air inlet of the indoor unit and the temperature information of an air outlet of the indoor unit; opening a target electronic expansion valve, adjusting the opening of the target electronic expansion valve to be a target opening, and further effectively regulating and controlling the target opening of the target electronic expansion valve according to the temperature information of the air inlet of the indoor unit and the temperature information of the air outlet of the indoor unit, so that the flow of the high-temperature gaseous refrigerant in the capillary tube of the indoor unit can be dynamically regulated according to the change of the temperature of the air inlet of the indoor unit and the temperature of the air outlet of the indoor unit, and the difference value between the temperature information of the air inlet of the indoor unit and the temperature information of the air outlet of the indoor unit is controlled to be constant, thereby effectively controlling the heat released by the flow of the high-temperature gaseous refrigerant in the capillary tube while realizing the dehumidification effect, carrying out accurate temperature compensation on the dehumidified blowing air flow, ensuring that the temperature of the air inlet and the air outlet of the indoor unit are kept constant, effectively realizing the effect of indoor constant-temperature dehumidification, and avoiding the technical defect that the discomfort of the body surface of a user is easily caused in the dehumidification process in the prior art, the user experience is good.
The invention provides an air conditioner, which comprises an indoor unit and an outdoor unit, wherein the outdoor unit comprises a condenser, an air conditioner compressor, a control device and a target electronic expansion valve;
the control device comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, and when the processor executes the program, the air conditioner constant temperature dehumidification method provided by the methods can be executed, and the method comprises the following steps: opening a target electronic expansion valve, and adjusting the opening degree of the target electronic expansion valve to be a target opening degree; the target opening is determined based on the frequency of the air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit; and regulating and controlling the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information so as to control the difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.
In another aspect, the present invention also provides a computer program product, the computer program product including a computer program, the computer program being stored on a non-transitory computer-readable storage medium, wherein when the computer program is executed by a processor, the computer is capable of executing the air conditioner constant temperature dehumidification method provided by the above methods, and the method includes: opening a target electronic expansion valve, and adjusting the opening degree of the target electronic expansion valve to be a target opening degree; the target opening is determined based on the frequency of an air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit; and regulating and controlling the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information so as to control the difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program, which when executed by a processor, implements a method for constant temperature dehumidification of an air conditioner provided by the above methods, the method including: opening a target electronic expansion valve, and adjusting the opening degree of the target electronic expansion valve to be a target opening degree; the target opening is determined based on the frequency of an air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit; and regulating and controlling the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information so as to control the difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A constant temperature dehumidification method of an air conditioner is characterized by comprising the following steps:
opening a target electronic expansion valve, and adjusting the opening degree of the target electronic expansion valve to be a target opening degree; the target opening is determined based on the frequency of an air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit;
and regulating and controlling the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information so as to control the difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.
2. The method for dehumidifying an air conditioner at constant temperature according to claim 1, wherein the method for determining the target opening degree based on the frequency of an air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information comprises:
calculating a difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information based on the frequency of the air-conditioning compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, and calculating a target product based on the difference value, the frequency of the air-conditioning compressor and a preset correction coefficient;
and obtaining the target opening degree of the target electronic expansion valve according to the target product and a preset constant.
3. The constant-temperature dehumidification method of an air conditioner according to claim 2, wherein the controlling of the target opening degree of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information comprises:
under the condition that the air conditioner is detected to be in a constant-temperature dehumidification mode and the temperature information of the air inlet of the indoor unit is the same as the temperature information of the air outlet of the indoor unit, adjusting the opening degree of the target electronic expansion valve from the target opening degree to the opening degree corresponding to the preset constant, and keeping the opening degree of the target electronic expansion valve to be the opening degree corresponding to the preset constant;
or the like, or, alternatively,
under the condition that the air conditioner is detected to be in a constant temperature dehumidification mode and the temperature information of the air inlet of the indoor unit is larger than the temperature information of the air outlet of the indoor unit, increasing the opening of the target electronic expansion valve on the basis of the target opening according to a first target speed;
or the like, or, alternatively,
and reducing the opening degree of the target electronic expansion valve on the basis of the target opening degree according to a second target speed under the condition that the air conditioner is detected to be in a constant-temperature dehumidification mode and the temperature information of the air inlet of the indoor unit is smaller than the temperature information of the air outlet of the indoor unit.
4. The air conditioner constant temperature dehumidification method according to claim 1, further comprising, before the opening of the target electronic expansion valve and adjusting the opening of the target electronic expansion valve to a target opening, the steps of:
under the condition that the air conditioner is detected not to be operated in the constant temperature dehumidification mode, the current preset mode is kept to operate, and indoor temperature information and indoor humidity information are obtained;
and acquiring the frequency of the air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit under the condition that the indoor temperature information is lower than a target temperature threshold and the indoor humidity information is higher than a first humidity threshold.
5. The constant-temperature dehumidification method of an air conditioner according to claim 4, wherein the controlling of the target opening degree of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information comprises:
under the condition that the difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information is equal to a target threshold value, adjusting the opening degree of the target electronic expansion valve from the target opening degree to the opening degree corresponding to the preset constant, and keeping the opening degree of the target electronic expansion valve to be the opening degree corresponding to the preset constant;
or the like, or, alternatively,
under the condition that the difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information is larger than the target threshold value, increasing the opening degree of the target electronic expansion valve on the basis of the target opening degree according to a first target speed;
or the like, or, alternatively,
and reducing the opening degree of the target electronic expansion valve on the basis of the target opening degree according to a second target speed under the condition that the air conditioner is detected to be in a constant-temperature dehumidification mode and the difference value between the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit is smaller than the target threshold value.
6. The method for dehumidifying an air conditioner at constant temperature according to claim 4, wherein after the controlling the target opening degree of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, the method further comprises:
under the condition that the indoor humidity information is detected to be smaller than a second humidity threshold value, closing the target electronic expansion valve;
and switching the running mode of the air conditioner back to the current preset mode.
7. An air conditioner constant temperature dehumidification system, comprising:
the starting module is used for starting the target electronic expansion valve and adjusting the opening degree of the target electronic expansion valve to be a target opening degree; the target opening is determined based on the frequency of the air conditioner compressor, the air inlet temperature information of the indoor unit and the air outlet temperature information of the indoor unit;
and the regulating and controlling module is used for regulating and controlling the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information so as to control the difference value between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.
8. An air conditioner is characterized by comprising an indoor unit and an outdoor unit, wherein the outdoor unit comprises a condenser, an air conditioner compressor, a control device and a target electronic expansion valve, the indoor unit comprises an evaporator, a capillary tube, a temperature sensor and a humidity sensor, the target electronic expansion valve is arranged on a communication pipeline between an air outlet of the air conditioner compressor and an air inlet of the capillary tube, and the air conditioner compressor, the target electronic expansion valve, the temperature sensor and the humidity sensor are respectively and electrically connected with the control device;
the control device comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, and when the processor executes the program, the processor realizes the constant temperature dehumidification control method of the air conditioner according to any one of claims 1 to 6.
9. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the air conditioner constant temperature dehumidification method according to any one of claims 1 to 6.
10. A computer program product comprising a computer program, wherein the computer program when executed by a processor implements the air conditioner constant temperature dehumidification method as set forth in any one of claims 1 to 6.
CN202210430055.0A 2022-04-22 2022-04-22 Constant-temperature dehumidification method and system for air conditioner, storage medium and air conditioner Pending CN114963426A (en)

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CN115435585A (en) * 2022-09-07 2022-12-06 青岛海尔空调器有限总公司 Control device and method for heat pump dryer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115435585A (en) * 2022-09-07 2022-12-06 青岛海尔空调器有限总公司 Control device and method for heat pump dryer

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