CN114383304A - Air conditioner, dehumidification control method thereof and computer readable storage medium - Google Patents
Air conditioner, dehumidification control method thereof and computer readable storage medium Download PDFInfo
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- CN114383304A CN114383304A CN202011121214.6A CN202011121214A CN114383304A CN 114383304 A CN114383304 A CN 114383304A CN 202011121214 A CN202011121214 A CN 202011121214A CN 114383304 A CN114383304 A CN 114383304A
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- 238000007791 dehumidification Methods 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 title claims abstract description 49
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- 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
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
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- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a dehumidification control method of an air conditioner, which comprises the following steps: after the air conditioner runs in a dehumidification mode, acquiring the difference value between the coil temperature of the outdoor heat exchanger and the outdoor temperature; when the difference between the coil temperature and the outdoor temperature is smaller than or equal to a first preset threshold, reducing the opening degree of an electronic expansion valve of the air conditioner; and when the difference between the temperature of the coil pipe and the outdoor temperature is greater than a first preset threshold value, increasing the opening degree of the electronic expansion valve. The invention also provides an air conditioner and a computer readable storage medium, and the air conditioner has higher dehumidification effect.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to an air conditioner, a dehumidification control method thereof, and a computer-readable storage medium.
Background
In the rainy season or when the air humidity is very high, the user has the demand of dehumidification to the air. Some users may choose to purchase a specialized dehumidifier, but this costs a certain amount of cost, and some users may use the dehumidification function of the air conditioner in the room to perform dehumidification.
The dehumidification effect of the air conditioner is different from that of the dehumidifier. The air conditioner has large dehumidification amount and can blow out cold air at the same time, so that the room temperature is reduced, and the cold air can cause discomfort when being blown to a person. The air conditioner can adopt a dehumidification mode with higher air outlet temperature to carry out dehumidification, and the air conditioner is prevented from blowing cold air. However, the dehumidification amount in the dehumidification mode is small, and the dehumidification efficiency of the air conditioner is low.
Disclosure of Invention
The invention mainly aims to provide an air conditioner, a dehumidification control method thereof and a computer readable storage medium, and aims to solve the problem of dehumidification efficiency of the air conditioner.
In order to achieve the above object, the present invention provides a dehumidification control method of an air conditioner, including:
after the air conditioner runs in a dehumidification mode, acquiring the difference value between the coil temperature of the outdoor heat exchanger and the outdoor temperature;
when the difference between the coil temperature and the outdoor temperature is smaller than or equal to a first preset threshold, reducing the opening degree of an electronic expansion valve of the air conditioner;
and when the difference between the temperature of the coil pipe and the outdoor temperature is greater than a first preset threshold value, increasing the opening degree of the electronic expansion valve.
In an embodiment, after the step of reducing the opening degree of the electronic expansion valve of the air conditioner, the method further includes:
acquiring the exhaust temperature of a compressor;
and when the exhaust temperature is greater than or equal to a preset exhaust temperature, increasing the opening degree of the electronic expansion valve.
In an embodiment, after the step of obtaining the discharge temperature of the compressor, the method further includes:
when the exhaust temperature is lower than the preset exhaust temperature, acquiring a difference value between the exhaust temperature and the outdoor temperature;
and when the difference value between the exhaust temperature and the outdoor temperature is smaller than or equal to a second preset threshold value, reducing the opening degree of the electronic expansion valve.
In an embodiment, after the step of obtaining the discharge temperature of the compressor, the method further includes:
and when the exhaust temperature is greater than or equal to a preset exhaust temperature, restoring the opening degree of the electronic expansion valve to a set opening degree, and executing the step of increasing the opening degree of the electronic expansion valve.
In an embodiment, after the step of increasing the opening degree of the electronic expansion valve, the method further includes:
acquiring the exhaust temperature of a compressor;
and when the difference value between the exhaust temperature and the outdoor temperature is greater than or equal to a third preset threshold value, increasing the opening of the electronic expansion valve.
In an embodiment, before the step of obtaining the difference between the coil temperature of the outdoor heat exchanger and the outdoor temperature, the dehumidification control method of the air conditioner includes the following steps:
and after the air conditioner operates the dehumidification mode, operating according to the set operation parameters corresponding to the dehumidification mode.
In an embodiment, after the air conditioner operates in the dehumidification mode, the step of operating according to the set operation parameters corresponding to the dehumidification mode includes:
acquiring indoor temperature after the air conditioner operates in a dehumidification mode;
and when the indoor temperature is lower than the set temperature and the difference value between the set temperature and the indoor temperature is higher than a fourth preset threshold value, operating according to set operating parameters corresponding to the dehumidification mode.
In one embodiment, after the step of decreasing the opening degree of the electronic expansion valve of the air conditioner, or after the step of increasing the opening degree of the electronic expansion valve, the method further includes:
acquiring indoor temperature at fixed time;
when the indoor temperature is reduced, reducing the rotating speed of the indoor fan and increasing the rotating speed of the outdoor fan;
and when the indoor temperature rises, increasing the rotating speed of the indoor fan and reducing the rotating speed of the indoor fan.
In order to achieve the above object, the present invention further provides an air conditioner, which includes a memory, a processor, and a control program stored in the memory and executable on the processor, wherein the control program, when executed by the processor, implements the steps of the dehumidification control method of the air conditioner as described above.
To achieve the above object, the present invention also provides a computer-readable storage medium storing a control program which, when executed by a processor, implements the steps of the dehumidification control method of an air conditioner as described above.
According to the air conditioner, the dehumidification control method and the computer readable storage medium, after the air conditioner runs in a dehumidification mode, the coil temperature and the outdoor temperature of the outdoor heat exchanger are obtained, and when the difference value between the coil temperature and the outdoor temperature is smaller than or equal to a preset threshold value, the opening degree of the electronic expansion valve is reduced so as to increase the dehumidification capacity of the air conditioner in a mode of improving the superheat degree; when the difference value between the temperature of the coil pipe and the outdoor temperature is larger than the preset threshold value, the opening degree of the electronic expansion valve is increased to improve the temperature of the indoor heat exchanger and the dehumidification amount of the air conditioner, namely the air conditioner increases the dehumidification amount of the air conditioner by adjusting the electronic expansion valve, and the dehumidification efficiency of the air conditioner is improved.
Drawings
Fig. 1 is a schematic diagram of a hardware architecture of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a dehumidification control method according to a first embodiment of the present invention;
FIG. 3 is a flowchart illustrating a dehumidification control method of an air conditioner according to a second embodiment of the present invention;
FIG. 4 is a flow chart illustrating a dehumidification control method according to a third embodiment of the air conditioner of the present invention;
fig. 5 is a flowchart illustrating a dehumidification control method of an air conditioner according to a fourth embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: after the air conditioner runs in a dehumidification mode, acquiring the difference value between the coil temperature of the outdoor heat exchanger and the outdoor temperature; when the difference between the coil temperature and the outdoor temperature is smaller than or equal to a first preset threshold, reducing the opening degree of an electronic expansion valve of the air conditioner; and when the difference between the temperature of the coil pipe and the outdoor temperature is greater than a first preset threshold value, increasing the opening degree of the electronic expansion valve.
Because the coil temperature and the outdoor temperature of the outdoor heat exchanger are obtained, and the difference value between the coil temperature and the outdoor temperature is smaller than or equal to the preset threshold value, the opening degree of the electronic expansion valve is reduced so as to increase the dehumidification capacity of the air conditioner in a mode of improving the superheat degree; when the difference value between the temperature of the coil pipe and the outdoor temperature is larger than the preset threshold value, the opening degree of the electronic expansion valve is increased to improve the temperature of the indoor heat exchanger and the dehumidification amount of the air conditioner, namely the air conditioner increases the dehumidification amount of the air conditioner by adjusting the electronic expansion valve, and the dehumidification efficiency of the air conditioner is improved.
As shown in fig. 1, fig. 1 is a schematic diagram of a hardware architecture of an air conditioner according to an embodiment of the present invention.
The terminal related to the embodiment of the invention can be an air conditioner, and the air conditioner comprises: a processor 101, such as a CPU, a memory 102 and a communication bus 103. Wherein a communication bus 103 is used for enabling the connection communication between these components.
The memory 102 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). As shown in fig. 1, a control program may be included in the memory 103 as a kind of computer storage medium; and the processor 101 may be configured to call the control program stored in the memory 102 and perform the following operations:
after the air conditioner runs in a dehumidification mode, acquiring the difference value between the coil temperature of the outdoor heat exchanger and the outdoor temperature;
when the difference between the coil temperature and the outdoor temperature is smaller than or equal to a first preset threshold, reducing the opening degree of an electronic expansion valve of the air conditioner;
and when the difference between the temperature of the coil pipe and the outdoor temperature is greater than a first preset threshold value, increasing the opening degree of the electronic expansion valve.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
acquiring the exhaust temperature of a compressor;
and when the exhaust temperature is greater than or equal to a preset exhaust temperature, increasing the opening degree of the electronic expansion valve.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
when the exhaust temperature is lower than the preset exhaust temperature, acquiring a difference value between the exhaust temperature and the outdoor temperature;
and when the difference value between the exhaust temperature and the outdoor temperature is smaller than or equal to a second preset threshold value, reducing the opening degree of the electronic expansion valve.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
and when the exhaust temperature is greater than or equal to a preset exhaust temperature, restoring the opening degree of the electronic expansion valve to a set opening degree, and executing the step of increasing the opening degree of the electronic expansion valve.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
acquiring the exhaust temperature of a compressor;
and when the difference value between the exhaust temperature and the outdoor temperature is greater than or equal to a third preset threshold value, increasing the opening of the electronic expansion valve.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
and after the air conditioner operates the dehumidification mode, operating according to the set operation parameters corresponding to the dehumidification mode.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
acquiring indoor temperature after the air conditioner operates in a dehumidification mode;
and when the indoor temperature is lower than the set temperature and the difference value between the set temperature and the indoor temperature is higher than a fourth preset threshold value, operating according to set operating parameters corresponding to the dehumidification mode.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
acquiring indoor temperature at fixed time;
when the indoor temperature is reduced, reducing the rotating speed of the indoor fan and increasing the rotating speed of the outdoor fan;
and when the indoor temperature rises, increasing the rotating speed of the indoor fan and reducing the rotating speed of the indoor fan.
According to the scheme, after the air conditioner runs in the dehumidification mode, the coil temperature and the outdoor temperature of the outdoor heat exchanger are obtained, and when the difference value between the coil temperature and the outdoor temperature is smaller than or equal to the preset threshold value, the opening degree of the electronic expansion valve is reduced so as to increase the dehumidification capacity of the air conditioner in a mode of improving the superheat degree; when the difference value between the temperature of the coil pipe and the outdoor temperature is larger than the preset threshold value, the opening degree of the electronic expansion valve is increased to improve the temperature of the indoor heat exchanger and the dehumidification amount of the air conditioner, namely the air conditioner increases the dehumidification amount of the air conditioner by adjusting the electronic expansion valve, and the dehumidification efficiency of the air conditioner is improved.
Based on the hardware architecture of the air conditioner, the embodiment of the dehumidification control method of the air conditioner is provided.
Referring to fig. 2, fig. 2 is a first embodiment of a dehumidification control method of an air conditioner according to the present invention, the dehumidification control method of an air conditioner includes the steps of:
step S10, after the air conditioner runs in the dehumidification mode, acquiring the coil temperature and the outdoor temperature of the outdoor heat exchanger;
in this embodiment, when the air conditioner performs dehumidification, the indoor heat exchanger serves as an evaporator to condense moisture in the air, and therefore, when the air conditioner enters the dehumidification mode, cool air is inevitably blown out. The dehumidification mode set by the air conditioner can be a constant temperature dehumidification mode, and the air outlet temperature of the air outlet of the air conditioner in the constant temperature dehumidification mode is greater than the preset air outlet temperature. The preset air outlet temperature is the temperature at which a user feels cold, and can be a fixed value or determined according to the outdoor temperature. Specifically, the outdoor temperature is greater than the preset outlet air temperature, and the difference between the outdoor temperature and the preset outlet air temperature is a fixed value, for example, the fixed value is 7, and when the outdoor temperature is 35 ℃, the preset outlet air temperature is 28 ℃.
After the air conditioner operates the dehumidification mode, the air conditioner operates according to the set operation parameters corresponding to the dehumidification mode, so that the air outlet temperature of the air conditioner is greater than the preset air outlet temperature. The set operation parameters comprise set operation frequency of the compressor, set rotating speed of the indoor fan, set rotating speed of the outdoor fan, set opening degree of the electronic expansion valve and the like. The set operation frequency is related to the environment and the power of the heating element of the air conditioner, and is generally 10 Hz-40 Hz. The set rotating speed of the indoor fan and the outdoor fan is generally 600rpm to 1200 rpm. The opening degree is set to be the middle value of the opening degree range of the electronic expansion valve, for example, the opening degree of the electronic expansion valve is set to be 0-450, and the value of the opening degree is set to be 200-250. The air conditioner operates according to the set operating parameters, and the air outlet temperature of the air conditioner can be larger than the preset air outlet temperature.
Further, whether the air conditioner needs to operate according to the set operation parameters is related to the indoor temperature and the set temperature, if the indoor temperature is higher than the set temperature, the user cannot feel that the air blown out by the air conditioner is cold air; if the indoor temperature is lower than the set temperature and the difference between the set temperature and the indoor temperature is greater than the preset threshold (fourth preset threshold), the user can feel that the air blown out by the air conditioner is cold air, and at the moment, the air conditioner needs to operate according to the set operation parameters, so that the air outlet temperature is greater than the preset air outlet temperature. For example, Ts-T1 is more than A, the air conditioner operates according to set operation parameters, Ts is set temperature, the set temperature is set by a user in the air conditioner, T1 is indoor temperature, A is set temperature return difference, and the value of A is generally 0-4.
After the air conditioner carries out dehumidification mode, the air-out temperature is great, and the coil pipe temperature that also is indoor heat exchanger is lower, and the moisture at indoor heat exchanger condensation is less for the dehumidification efficiency of air conditioner is lower. In this regard, the air conditioner needs to increase the dehumidification amount. There are two ways to increase the dehumidification capacity, one is to increase the superheat of the compressor and the other is to increase the coil temperature of the indoor heat exchanger. The choice of both modes is related to the coil temperature of the outdoor heat exchanger. Experimental data show that when the difference value between the coil temperature of the outdoor heat exchanger and the outdoor temperature is smaller than or equal to a first preset threshold value, the dehumidification capacity can be improved by improving the superheat degree; and when the difference value between the coil temperature of the outdoor heat exchanger and the outdoor temperature is greater than a first preset threshold value, the coil temperature of the evaporator is increased, and the dehumidification capacity is increased.
Step S20, when the difference between the coil temperature and the outdoor temperature is less than or equal to a first preset threshold, reducing the opening degree of an electronic expansion valve of the air conditioner;
when the difference between the coil temperature and the outdoor temperature is less than or equal to a first preset threshold value, reducing the opening degree of the electronic expansion valve increases the degree of superheat to increase the dehumidification amount. The reduced opening value can be 0-3 or a larger value. For example, when TC-T0 ≦ D, the opening degree of the electronic expansion valve is decreased, D is the first preset threshold, TC is the coil temperature of the outdoor heat exchanger, i.e., the condensing temperature of the condenser, and T0 is the outdoor temperature. D is generally 0-3.
And step S30, when the difference between the coil temperature and the outdoor temperature is greater than a first preset threshold value, increasing the opening degree of the electronic expansion valve.
When the difference between the temperature of the coil and the outdoor temperature is larger than a first preset threshold value, namely TC-T0 is larger than D, the opening degree of the electronic expansion valve is increased, and the surface temperature of the evaporator is increased, so that the dehumidification capacity can be increased.
The following description will be made based on experimental data. The opening degree of the electronic expansion valve is 0-600, when the air outlet temperature of the air conditioner is higher than 27 ℃, the dehumidification capacity of the electronic expansion valve is higher than 1.8KG/h between 30-100 degrees, and the difference value between the coil temperature of the outdoor heat exchanger and the outdoor temperature is smaller than or equal to D. When the outlet air temperature of the air conditioner is higher than 27 ℃, the dehumidification amount of the electronic expansion valve is larger than 1.8KG/h between 420 and 600 degrees of opening, and the difference value between the coil temperature of the outdoor heat exchanger and the outdoor temperature is larger than D.
It should be noted that, the specific data given in this embodiment is obtained by testing the air conditioner of a specific model, and other types of air conditioners may also increase the dehumidification amount by increasing the superheat degree or increasing the surface temperature of the evaporator, and ensure that the outlet air temperature is greater than the preset outlet air temperature, but the numerical value of the air conditioner is different from the data provided in this embodiment, and a data description is not repeated here.
In this embodiment, when the air conditioner dehumidified at constant temperature, only through the aperture of adjustment electronic expansion valve, other operating parameter changes lessly to make the air conditioner when carrying out constant temperature dehumidification, the air-out temperature, and be greater than preset air-out temperature, also under the prerequisite that does not blow cold wind at air conditioner dehumidification, guaranteed the dehumidification effect of air conditioner.
In the technical scheme provided by this embodiment, after the air conditioner operates in the dehumidification mode, the coil temperature and the outdoor temperature of the outdoor heat exchanger are acquired, and when the difference between the coil temperature and the outdoor temperature is less than or equal to a preset threshold value, the opening degree of the electronic expansion valve is reduced to increase the dehumidification capacity of the air conditioner in a manner of increasing the superheat degree; when the difference value between the temperature of the coil pipe and the outdoor temperature is larger than the preset threshold value, the opening degree of the electronic expansion valve is increased to improve the temperature of the indoor heat exchanger and the dehumidification amount of the air conditioner, namely the air conditioner increases the dehumidification amount of the air conditioner by adjusting the electronic expansion valve, and the dehumidification efficiency of the air conditioner is improved.
Referring to fig. 3, fig. 3 is a second embodiment of the dehumidification control method of an air conditioner according to the present invention, and based on the first embodiment, after step S20, the method further includes:
step S40, acquiring the exhaust temperature of the compressor;
and step S50, when the exhaust temperature is greater than or equal to a preset exhaust temperature, increasing the opening degree of the electronic expansion valve.
In the present embodiment, the discharge temperature of the compressor is increased after decreasing the opening degree of the electronic expansion valve and increasing the degree of superheat. However, the exhaust temperature of the compressor has an upper limit value, namely the superheat degree is increased and should not exceed the upper limit value, so that the compressor is prevented from being damaged. The upper limit value is a preset exhaust temperature. The preset exhaust temperature is generally 100-130 ℃.
After the opening degree of the electronic expansion valve is reduced, the air conditioner acquires the actual exhaust temperature of the compressor, and if the exhaust temperature is greater than or equal to the preset exhaust temperature, the compressor runs in an overload mode, and at the moment, the opening degree of the electronic expansion valve needs to be increased. The air conditioner can adjust the opening of the electronic expansion valve to a larger value, thereby rapidly reducing the exhaust temperature of the compressor.
Further, if the exhaust temperature is greater than or equal to the preset exhaust temperature, the opening degree of the electronic expansion valve is restored to the set opening degree, and then the opening degree of the electronic expansion valve is increased. When the degree of superheat is increased, the electronic expansion valve is decreased from the set opening degree, and therefore, the opening degree of the electronic expansion valve is increased by returning the electronic expansion valve to the set opening degree. Therefore, the opening degree of the electronic expansion valve is restored to the set opening degree, and the opening degree of the electronic expansion valve is increased, so that the temperature of the coil pipe of the outdoor heat exchanger is increased, and the dehumidification capacity is improved. In this case, the opening degree of the electronic expansion valve may be increased by a small value, typically 1 to 3.
In the technical scheme provided by this embodiment, when the air conditioner reduces the opening degree of the electronic expansion valve and improves the superheat degree, the air conditioner obtains the exhaust temperature of the compressor, and when the exhaust temperature is greater than or equal to the preset exhaust temperature, the opening degree of the electronic expansion valve is increased, and the compressor is prevented from being damaged.
Referring to fig. 4, fig. 4 is a third embodiment of a dehumidification control method of an air conditioner according to the present invention, and based on the second embodiment, after step S40, the method further includes:
step S60, when the exhaust temperature is less than a preset exhaust temperature, acquiring a difference value between the exhaust temperature and the outdoor temperature;
and step S70, when the difference value between the exhaust temperature and the outdoor temperature is smaller than or equal to a second preset threshold value, reducing the opening degree of the electronic expansion valve.
In this embodiment, when the air conditioner increases the dehumidification amount by the degree of superheat, the dehumidification amount is required to be large. Through tests, when the dehumidification amount is large, the difference value obtained by subtracting the outdoor temperature from the exhaust temperature is larger than a second preset threshold value. After the air conditioner obtains the exhaust temperature, if the exhaust temperature is lower than the preset exhaust temperature, the air conditioner further determines whether the dehumidification amount is larger than the preset dehumidification amount, and if the dehumidification amount is larger than the preset dehumidification amount, the dehumidification amount of the air conditioner is larger. If the difference value between the exhaust temperature and the outdoor temperature is smaller than or equal to the second preset threshold value, the dehumidification amount is smaller, and the air conditioner needs to reduce the opening degree of the electronic expansion valve again to improve the superheat degree so as to improve the dehumidification amount. If the difference value between the exhaust temperature and the outdoor temperature is larger than the second preset threshold value and the dehumidification amount is larger, the opening degree of the electronic expansion valve does not need to be reduced again
The second predetermined threshold may be any suitable value, for example, the second predetermined threshold may be 53. And when TP-T0 is larger than M, the opening degree of the electronic expansion valve does not need to be reduced again, if TP-T0 is smaller than or equal to M, the opening degree of the electronic expansion valve needs to be reduced again, and M is a second preset threshold value.
In the technical scheme provided by this embodiment, when the exhaust temperature is less than the preset exhaust temperature, the difference between the exhaust temperature and the outdoor temperature is obtained, and if the difference is less than or equal to the second preset threshold, it can be determined that the dehumidification capacity is small, and the air conditioner reduces the opening degree of the electronic expansion valve again to improve the dehumidification capacity.
Referring to fig. 5, fig. 5 is a fourth embodiment of a dehumidification control method of an air conditioner according to the present invention, and based on any one of the first to third embodiments, after step S30, the method further includes:
step S80, acquiring the exhaust temperature of the compressor;
and step S90, increasing the opening of the electronic expansion valve when the difference between the exhaust temperature and the outdoor temperature is larger than or equal to a third preset threshold value.
In the present embodiment, the air conditioner increases the dehumidification amount by increasing the evaporation temperature of the evaporator (indoor heat exchanger), that is, by increasing the opening degree of the electronic expansion valve. And increasing the opening degree of the electronic expansion valve reduces the exhaust temperature, and tests show that when the dehumidification amount is large, the difference value obtained by subtracting the outdoor temperature from the exhaust temperature needs to be smaller than a third preset threshold value. Therefore, the opening degree of the electronic expansion valve is increased until the difference value obtained by subtracting the outdoor temperature from the exhaust temperature is smaller than the opening degree corresponding to the third preset threshold value.
If the difference value between the exhaust temperature and the outdoor temperature is greater than or equal to the third preset threshold value and the dehumidification amount is small, the opening degree of the electronic expansion valve needs to be increased to improve the dehumidification amount of the air conditioner. If the difference value between the exhaust temperature and the outdoor temperature is smaller than the third preset threshold value, the opening degree of the electronic expansion valve does not need to be increased.
The third predetermined threshold may be any suitable value, for example, the third predetermined threshold may be 7. And when TP-T0 is less than N, the opening degree of the electronic expansion valve does not need to be increased again, if TP-T0 is more than or equal to N, the opening degree of the electronic expansion valve needs to be increased again, and N is a third preset threshold value.
In the technical scheme provided by this embodiment, when the air conditioner increases the dehumidification capacity by increasing the opening degree of the electronic expansion valve, the air conditioner acquires the exhaust temperature, and if the difference between the exhaust temperature and the outdoor temperature is greater than or equal to the third preset threshold, the air conditioner continues to increase the opening degree of the electronic expansion valve to increase the dehumidification capacity.
In one embodiment, after the air conditioner performs constant temperature dehumidification, the indoor temperature may rise or fall, and at this time, the heat load of the heating element of the air conditioner and the room can be balanced by the rotation speed of the indoor fan and the outdoor fan. Specifically, after decreasing the opening degree of the electronic expansion valve or increasing the opening degree of the electronic expansion valve, the air conditioner acquires the indoor temperature in real time (the indoor temperature is less than the set temperature in the constant temperature dehumidification). If the indoor temperature is detected to be reduced, the air conditioner should reduce the evaporation capacity, so that the air conditioner reduces the rotating speed of the indoor fan and increases the rotating speed of the outdoor fan, specifically, the air conditioner reduces the rotating speed by 20% on the basis of the original rotating speed, and can increase the rotating speed of the outdoor fan to the maximum rotating speed. If the indoor temperature is detected to rise, the air conditioner should improve the refrigerating capacity, so the air conditioner increases the rotating speed of the indoor fan and reduces the rotating speed of the outdoor fan, specifically, the air conditioner increases the rotating speed by 20% on the basis of the original rotating speed and can reduce the rotating speed of the outdoor fan to the minimum rotating speed.
In this embodiment, after the air conditioner performs constant temperature dehumidification, the heat load of the heating element of the air conditioner and the room is balanced by the rotation speed of the indoor fan and the rotation speed of the outdoor fan, so as to ensure that the indoor temperature is maintained within the range corresponding to the set temperature.
The invention also provides an air conditioner, which comprises a memory, a processor and a control program which is stored in the memory and can run on the processor, wherein the electronic expansion valve is connected with the processor. The control program, when executed by the processor, implements the steps of the dehumidification control method of the air conditioner as described in the above embodiments.
The present invention also provides a computer-readable storage medium storing a control program that, when executed by a processor, implements the steps of the dehumidification control method of an air conditioner as described in the above embodiments.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention essentially or contributing to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioning device, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent flow transformations that may be embodied in the present specification and drawings, or directly or indirectly applied to other related arts, and are within the scope of the present invention.
Claims (10)
1. A dehumidification control method of an air conditioner is characterized by comprising the following steps:
after the air conditioner runs in a dehumidification mode, acquiring the difference value between the coil temperature of the outdoor heat exchanger and the outdoor temperature;
when the difference between the coil temperature and the outdoor temperature is smaller than or equal to a first preset threshold, reducing the opening degree of an electronic expansion valve of the air conditioner;
and when the difference between the temperature of the coil pipe and the outdoor temperature is greater than a first preset threshold value, increasing the opening degree of the electronic expansion valve.
2. The dehumidification control method of an air conditioner according to claim 1, wherein the step of reducing an opening degree of an electronic expansion valve of the air conditioner further comprises, after the step of reducing the opening degree of the electronic expansion valve:
acquiring the exhaust temperature of a compressor;
and when the exhaust temperature is greater than or equal to a preset exhaust temperature, increasing the opening degree of the electronic expansion valve.
3. The dehumidification control method of an air conditioner according to claim 2, wherein said step of obtaining a discharge temperature of the compressor is followed by further comprising:
when the exhaust temperature is lower than the preset exhaust temperature, acquiring a difference value between the exhaust temperature and the outdoor temperature;
and when the difference value between the exhaust temperature and the outdoor temperature is smaller than or equal to a second preset threshold value, reducing the opening degree of the electronic expansion valve.
4. The dehumidification control method of an air conditioner according to claim 2, wherein said step of obtaining a discharge temperature of the compressor is followed by further comprising:
and when the exhaust temperature is greater than or equal to a preset exhaust temperature, restoring the opening degree of the electronic expansion valve to a set opening degree, and executing the step of increasing the opening degree of the electronic expansion valve.
5. The dehumidification control method of an air conditioner according to claim 1, wherein the step of increasing the opening degree of the electronic expansion valve is followed by further comprising:
acquiring the exhaust temperature of a compressor;
and when the difference value between the exhaust temperature and the outdoor temperature is greater than or equal to a third preset threshold value, increasing the opening of the electronic expansion valve.
6. The dehumidification control method of an air conditioner according to any one of claims 1 to 5, wherein said step of obtaining a difference between a coil temperature of the outdoor heat exchanger and an outdoor temperature is preceded by a dehumidification control method of an air conditioner comprising the steps of:
and after the air conditioner operates the dehumidification mode, operating according to the set operation parameters corresponding to the dehumidification mode.
7. The dehumidification control method of an air conditioner according to claim 6, wherein the step of operating according to the set operation parameters corresponding to the dehumidification mode after the air conditioner operates the dehumidification mode comprises:
acquiring indoor temperature after the air conditioner operates in a dehumidification mode;
and when the indoor temperature is lower than the set temperature and the difference value between the set temperature and the indoor temperature is higher than a fourth preset threshold value, operating according to set operating parameters corresponding to the dehumidification mode.
8. The dehumidification control method of an air conditioner according to any one of claims 1 to 5, wherein after the step of decreasing the opening degree of the electronic expansion valve of the air conditioner or after the step of increasing the opening degree of the electronic expansion valve, further comprising:
acquiring indoor temperature at fixed time;
when the indoor temperature is reduced, reducing the rotating speed of the indoor fan and increasing the rotating speed of the outdoor fan;
and when the indoor temperature rises, increasing the rotating speed of the indoor fan and reducing the rotating speed of the indoor fan.
9. An air conditioner, characterized in that the air conditioner comprises a memory, a processor, and a control program stored in the memory and executable on the processor, the control program, when executed by the processor, implementing the steps of the dehumidification control method of the air conditioner according to any one of claims 1 to 8.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a control program, which when executed by a processor, implements the steps of the dehumidification control method of an air conditioner according to any one of claims 1 to 8.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07294021A (en) * | 1994-04-28 | 1995-11-10 | Kubota Corp | Heat pump type cooling dehumidifying equipment |
| JP2006145111A (en) * | 2004-11-19 | 2006-06-08 | Matsushita Electric Ind Co Ltd | Dehumidifying operation control method for air conditioner |
| CN104613540A (en) * | 2013-11-06 | 2015-05-13 | 青岛宏宇环保空调设备有限公司 | Rapid dehumidifying machine room air-conditioner |
| CN104776556A (en) * | 2015-03-18 | 2015-07-15 | 广东美的制冷设备有限公司 | Thermostatic dehumidification control method and device of air conditioner |
| CN107062470A (en) * | 2017-02-28 | 2017-08-18 | 海信（山东）空调有限公司 | A kind of air conditioner and its constant temperature dehumidification control method |
| CN108088041A (en) * | 2017-12-06 | 2018-05-29 | 广东美的制冷设备有限公司 | Control method, radiation air-conditioner and the storage medium of electric expansion valve |
| CN109341013A (en) * | 2018-09-30 | 2019-02-15 | 广东美的制冷设备有限公司 | Air conditioner and its control method, device |
| CN109489198A (en) * | 2018-10-31 | 2019-03-19 | 珠海格力电器股份有限公司 | Dehumidification control method and device for air conditioning system and air conditioner |
| CN109855184A (en) * | 2019-01-23 | 2019-06-07 | 青岛海尔空调器有限总公司 | Air conditioner and its dehumidification control method |
| CN110454939A (en) * | 2019-08-05 | 2019-11-15 | 广东美的制冷设备有限公司 | Air conditioner and its control method, control device |
| CN110567088A (en) * | 2019-09-09 | 2019-12-13 | 海信（山东）空调有限公司 | Dehumidification method of air conditioner and air conditioner |
| CN111076342A (en) * | 2018-10-22 | 2020-04-28 | 广州松下空调器有限公司 | Control method and device of air conditioner and air conditioner |
| CN111412591A (en) * | 2020-03-12 | 2020-07-14 | 海信（山东）空调有限公司 | Constant-temperature dehumidification control method and device for air conditioning system, air conditioning system and medium |
-
2020
- 2020-10-19 CN CN202011121214.6A patent/CN114383304B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07294021A (en) * | 1994-04-28 | 1995-11-10 | Kubota Corp | Heat pump type cooling dehumidifying equipment |
| JP2006145111A (en) * | 2004-11-19 | 2006-06-08 | Matsushita Electric Ind Co Ltd | Dehumidifying operation control method for air conditioner |
| CN104613540A (en) * | 2013-11-06 | 2015-05-13 | 青岛宏宇环保空调设备有限公司 | Rapid dehumidifying machine room air-conditioner |
| CN104776556A (en) * | 2015-03-18 | 2015-07-15 | 广东美的制冷设备有限公司 | Thermostatic dehumidification control method and device of air conditioner |
| CN107062470A (en) * | 2017-02-28 | 2017-08-18 | 海信（山东）空调有限公司 | A kind of air conditioner and its constant temperature dehumidification control method |
| CN108088041A (en) * | 2017-12-06 | 2018-05-29 | 广东美的制冷设备有限公司 | Control method, radiation air-conditioner and the storage medium of electric expansion valve |
| CN109341013A (en) * | 2018-09-30 | 2019-02-15 | 广东美的制冷设备有限公司 | Air conditioner and its control method, device |
| CN111076342A (en) * | 2018-10-22 | 2020-04-28 | 广州松下空调器有限公司 | Control method and device of air conditioner and air conditioner |
| CN109489198A (en) * | 2018-10-31 | 2019-03-19 | 珠海格力电器股份有限公司 | Dehumidification control method and device for air conditioning system and air conditioner |
| CN109855184A (en) * | 2019-01-23 | 2019-06-07 | 青岛海尔空调器有限总公司 | Air conditioner and its dehumidification control method |
| CN110454939A (en) * | 2019-08-05 | 2019-11-15 | 广东美的制冷设备有限公司 | Air conditioner and its control method, control device |
| CN110567088A (en) * | 2019-09-09 | 2019-12-13 | 海信（山东）空调有限公司 | Dehumidification method of air conditioner and air conditioner |
| CN111412591A (en) * | 2020-03-12 | 2020-07-14 | 海信（山东）空调有限公司 | Constant-temperature dehumidification control method and device for air conditioning system, air conditioning system and medium |
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|---|---|
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