CN112361526A - Air conditioner dehumidification method and air conditioner - Google Patents

Air conditioner dehumidification method and air conditioner Download PDF

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Publication number
CN112361526A
CN112361526A CN202011202814.5A CN202011202814A CN112361526A CN 112361526 A CN112361526 A CN 112361526A CN 202011202814 A CN202011202814 A CN 202011202814A CN 112361526 A CN112361526 A CN 112361526A
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temperature
heat exchanger
indoor heat
dehumidification
expansion valve
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CN202011202814.5A
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CN112361526B (en
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王树涛
吴林涛
孟庆好
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Hisense Shandong Air Conditioning Co Ltd
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Hisense Shandong Air Conditioning Co Ltd
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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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • 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
    • 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
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a dehumidification method of an air conditioner, the firstThe first indoor heat exchanger and the second indoor heat exchanger are arranged in front and at the back along the air flow direction, and a second electronic expansion valve is arranged between the first indoor heat exchanger and the second indoor heat exchanger; s11: starting a dehumidification mode in a refrigeration mode, and setting a set temperature; s12: for set temperature TsAnd indoor ambient temperature TrComparing; when T iss＝TrPerforming constant-temperature dehumidification, and executing S13; when T iss>TrPerforming temperature rise dehumidification, and executing S14; s13: the frequency of the compressor is changed to Ahz, the outdoor fan is stopped after time delay Bs, the first electronic expansion valve is fully opened, and S15 is executed; s14: when the frequency of the compressor is changed to Ahz, the outdoor fan is adjusted to a preset low wind level, the first electronic expansion valve is fully opened, and S15 is executed; s15: the reversing device is electrified to change the flow direction of a refrigerant, and the frequency of the compressor and the opening degree of the second electronic expansion valve are adjusted according to the difference value between the set temperature and the outlet air temperature; an air conditioner is also provided; the air inlet is firstly changed into cool air with low humidity, and then is heated into hot air, so that the uneven mixing of the cool air and the hot air can be avoided, and the temperature can be more reasonably kept and the dehumidification can be realized.

Description

Air conditioner dehumidification method and air conditioner
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioner dehumidification method and an air conditioner.
Background
In the present trade, the dehumidification of air conditioner generally goes on under the cooling mode, when lower at indoor temperature, if will make the air conditioner continue to dehumidify, then can make indoor temperature further reduce, makes the user feel cold, influences user experience, in order to solve above-mentioned problem, needs to design one kind can the constant temperature dehumidification and the air conditioner of intensification dehumidification. At present, in order to achieve the purpose of constant temperature dehumidification, a heat exchanger of an air conditioner is generally designed into a semi-ring shape and mainly applied to a hanging machine, or is designed into a V shape and mainly applied to a cabinet machine, one part of the heat exchanger is used as a dehumidification evaporator, and the other part of the heat exchanger is directly communicated with an outdoor heat exchanger so as to flow high-temperature and high-pressure refrigerant, so that air flow flowing through the indoor heat exchanger is heated in one part of an indoor air duct, cooled in the other part, and blown out from an indoor air outlet after being mixed; however, the indoor heat exchanger is complex in connection mode, the cold air and the hot air are not mixed uniformly, user experience is affected, and the application range of the mode is narrow.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. For this purpose,
according to an embodiment of the disclosure, a dehumidification method of an air conditioner is provided, the air conditioner comprises an outdoor heat exchanger and an indoor heat exchanger, the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger, a first electronic expansion valve is arranged between the second indoor heat exchanger and the outdoor heat exchanger, the first indoor heat exchanger and the second indoor heat exchanger are arranged in front and at the back along an air flow direction, and a second electronic expansion valve is arranged between the first indoor heat exchanger and the second indoor heat exchanger;
the dehumidification method comprises the following steps:
s11: starting a dehumidification mode in the refrigeration mode of the air conditioner and setting a set temperature Ts；
S12: for set temperature TsAnd indoor ambient temperature TrComparing; when T iss＝TrWhen the temperature is high, constant temperature dehumidification is carried out, and S13 is executed; when T iss>TrIn the meantime, the temperature is raised and the dehumidification is performed, and S14 is executed;
s13: the frequency of the compressor is changed to Ahz, the outdoor fan is stopped after time delay Bs, the first electronic expansion valve is fully opened, and then S15 is executed;
s14: the frequency of the compressor is changed to Ahz, the outdoor fan is adjusted to a preset low wind level, the first electronic expansion valve is fully opened, and then S15 is executed;
s15: the reversing device is electrified to change the flow direction of the refrigerant, and the frequency of the compressor and the opening degree of the second electronic expansion valve are set according to the set temperature TsAnd the air-out temperature T of the air conditionerCAnd (4) adjusting the difference value of the step (c).
Set up around along the air flow direction through setting up first indoor heat exchanger and second indoor heat exchanger, make the air that gets into the air conditioner pass through second indoor heat exchanger earlier and pass through first indoor heat exchanger again, open the dehumidification mode under the air conditioner refrigeration mode, get into constant temperature dehumidification and intensification dehumidification back, the switching-over device switching-over, make first indoor heat exchanger be the high temperature part, second indoor heat exchanger is the low temperature part, indoor air inlet becomes the cool wind that humidity is low behind the indoor heat exchanger of second, it is hot-blast to heat through first indoor heat exchanger again, can avoid the cold and hot wind to mix inhomogeneous, more reasonable reaching constant temperature, the effect of intensification dehumidification, improve user experience, and indoor heat exchanger's connected mode is simple, and the cost is saved.
According to an embodiment of the present disclosure, in the step S15, the compressor frequency and the second electronic expansion valve opening degree are according to the set temperature and the air conditionerThe difference adjustment of air-out temperature includes: when the outlet air temperature TCSet temperature Ts>When 0, compressor frequency and second electron expansion valve aperture all reduce for the air-out temperature reduces and is close to the settlement temperature, reaches the purpose that constant temperature dehumidified or intensification dehumidified.
According to an embodiment of the present disclosure, in step S15, the adjusting the compressor frequency and the opening of the second electronic expansion valve according to the difference between the set temperature and the air conditioner outlet air temperature includes: when the outlet air temperature TCSet temperature TsWhen being equal to 0, the frequency of the compressor and the opening of the second electronic expansion valve are unchanged, so that the air outlet temperature is unchanged, and the purposes of constant temperature dehumidification or temperature rise dehumidification are achieved.
According to an embodiment of the present disclosure, in step S15, the adjusting the compressor frequency and the opening of the second electronic expansion valve according to the difference between the set temperature and the air conditioner outlet air temperature includes: when the outlet air temperature TCSet temperature Ts<When 0, compressor frequency and second electron expansion valve aperture all increase for the air-out temperature risees and is close to the settlement temperature, reaches the purpose of constant temperature dehumidification or intensification dehumidification.
According to an embodiment of the present disclosure, the air conditioner further includes an indoor fan, and the step 12 further includes: when T iss<TrIf so, cooling and dehumidifying, and executing S16;
s16: the compressor frequency, the electronic expansion valve opening, the indoor fan speed and the outdoor fan speed are set in a normal refrigeration mode, and the second electronic expansion valve is fully opened.
According to an embodiment of the present disclosure, the setting of the temperature T is performed in real time during the execution of step S15sAnd indoor ambient temperature TrBy comparison, when S15 is executed during the constant temperature dehumidification, T iss<TrWhen the temperature is lowered, dehumidification is carried out, the reversing device reverses, and then S16 is executed; when T iss＝TrWhen the temperature is kept constant, the dehumidification is carried out, the frequency of the compressor and the opening degree of the second electronic expansion valve are according to the set temperature TsAnd the air-out temperature T of the air conditionerCAdjusting the difference value of (A); when T iss>TrWhen the air conditioner is running, the outdoor fan is adjusted to a preset low wind gear and the compressor frequencyAnd the opening degree of the second electronic expansion valve is according to the set temperature TsAnd the air-out temperature T of the air conditionerCAdjusting the difference value of (A); can be real-time according to the set temperature TsAnd indoor ambient temperature TrThe relation of (2) changes the dehumidification mode, can satisfy user's requirement, improves user experience.
According to an embodiment of the present disclosure, the setting of the temperature T is performed in real time during the execution of step S15sAnd indoor ambient temperature TrBy comparison, when the temperature rise dehumidification is performed as S15, T iss<TrWhen the temperature is lowered, dehumidification is carried out, the reversing device reverses, and then S16 is executed; when T iss＝TrWhen the temperature is constant, dehumidification is carried out, the outdoor fan stops after time delay Cs, and the frequency of the compressor and the opening degree of the second electronic expansion valve are according to the set temperature TsAnd the air-out temperature T of the air conditionerCAdjusting the difference value of (A); when T iss>TrThe frequency of the compressor and the opening of the second electronic expansion valve are determined according to the set temperature TsAnd the air-out temperature T of the air conditionerCAdjusting the difference value of (A); can be real-time according to the set temperature TsAnd indoor ambient temperature TrThe relation of (2) changes the dehumidification mode, can satisfy user's requirement, improves user experience.
According to an embodiment of the present disclosure, an air conditioner for performing the above-mentioned dehumidification method of the air conditioner includes:
the system comprises a compressor, a reversing device, a first electronic expansion valve and an outdoor heat exchanger;
the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger, the first electronic expansion valve is arranged between the second indoor heat exchanger and the outdoor heat exchanger, the first indoor heat exchanger and the second indoor heat exchanger are arranged in the front and back direction along the air flow direction, and a second electronic expansion valve is arranged between the first indoor heat exchanger and the second indoor heat exchanger;
when the air conditioner operates in a refrigerating mode, after the air conditioner performs constant-temperature dehumidification or temperature rise dehumidification, the reversing device reverses, high-temperature gaseous refrigerant discharged from an exhaust port of the compressor enters the first indoor heat exchanger through the reversing device, is changed into low-temperature and low-pressure liquid refrigerant through the second electronic expansion valve, enters the second indoor heat exchanger, flows into the first electronic expansion valve, indoor inlet air is changed into cool air with low humidity through the second indoor heat exchanger, and is heated into hot air through the first indoor heat exchanger.
Through setting up first indoor heat exchanger and second indoor heat exchanger along air flow direction front and back setting, make the air that gets into the air conditioner pass through second indoor heat exchanger earlier and pass through first indoor heat exchanger again, open the dehumidification mode under the air conditioner refrigeration mode, get into constant temperature dehumidification and after the intensification dehumidification, the switching-over device switching-over, make the high temperature gaseous state refrigerant of compressor gas vent exhaust to first indoor heat exchanger through the switching-over device, become low temperature after the second electronic expansion valve, low pressure liquid refrigerant gets into second indoor heat exchanger, the indoor air inlet becomes the cool wind that humidity is low behind the second indoor heat exchanger, it is hot-blast to heat through first indoor heat exchanger again, can avoid cold and hot wind mixing inhomogeneous, more reasonable reaching the constant temperature, the effect of intensification dehumidification, improve user experience, and indoor heat exchanger's connected mode is simple, and the cost is saved.
According to the embodiment of the disclosure, the first indoor heat exchanger and the second indoor heat exchanger are arranged in parallel, and the gap between the first indoor heat exchanger and the second indoor heat exchanger is 5-10mm, so that the two indoor heat exchangers are prevented from being in contact with each other to influence the heat exchange effect.
According to the embodiment of the disclosure, the reversing device is a four-way valve.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow diagram of dehumidification in a cooling mode according to an embodiment of the present disclosure;
FIG. 2 is a partial flow diagram of a dehumidification stream in a refrigeration mode according to an embodiment of the present disclosure;
FIG. 3 is a partial flow diagram of a dehumidification stream in a cooling mode according to an embodiment of the present disclosure;
FIG. 4 is a partial flow diagram of a dehumidification stream in a cooling mode according to an embodiment of the present disclosure;
FIG. 5 is a flow diagram of a dehumidification flow in a heating mode according to an embodiment of the present disclosure;
FIG. 6 is a partial flow diagram of a dehumidified flow in a heating mode according to an embodiment of the present disclosure;
FIG. 7 is a schematic diagram of an air conditioner in a cooling mode according to an embodiment of the present disclosure;
FIG. 8 is a schematic diagram of an air conditioner in a heating mode according to an embodiment of the present disclosure;
fig. 9 is a refrigerant flow diagram of an air conditioner according to an embodiment of the present disclosure during constant temperature dehumidification and temperature rise dehumidification.
In the above figures: a compressor 11; a commutation device 12; an indoor heat exchanger 13; the first indoor heat exchanger 131; a second indoor heat exchanger 132; a first electronic expansion valve 14; an outdoor heat exchanger 15; an indoor fan 16; an outdoor fan 17; a second electronic expansion valve 18; an indoor ambient temperature sensor 19; an outlet air temperature sensor 20; an inner coil sensor 21; a first inside coil sensor 211; a second inside coil sensor 212.
Detailed Description
The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
The invention provides a dehumidification method of an air conditioner, and referring to fig. 7-9, the air conditioner comprises a compressor 11, a reversing device 12, an indoor heat exchanger 13, a first electronic expansion valve 14, an outdoor heat exchanger 15, an indoor fan 16 and an outdoor fan 17; wherein the reversing device is a four-way valve.
The indoor heat exchanger 13 includes a first indoor heat exchanger 131 and a second indoor heat exchanger 132, the first electronic expansion valve 14 is disposed between the second indoor heat exchanger 132 and the outdoor heat exchanger 15, the second indoor heat exchanger 132 and the first indoor heat exchanger 131 are disposed in front and behind in the air flow direction, and a second electronic expansion valve 18 is disposed therebetween, and after the indoor air enters the air conditioner, the indoor air passes through the second indoor heat exchanger 132 and the first indoor heat exchanger 131 in sequence, and then is discharged from the air conditioner.
The air conditioner further comprises an indoor environment temperature sensor 19, an air outlet temperature sensor 20, an inner coil sensor 21 and an outer coil sensor (not shown), wherein the inner coil sensor 21 comprises a first inner coil sensor 211 and a second inner coil sensor 212, the indoor environment temperature sensor 19 is used for detecting the indoor environment temperature in real time, and the air outlet temperature sensor 20 is used for detecting the air outlet temperature in real time.
Referring to fig. 1, the dehumidifying method of an air conditioner includes the steps of:
s11: starting a dehumidification mode in the refrigeration mode of the air conditioner and setting a set temperature Ts；
S12: for set temperature TsAnd indoor ambient temperature TrComparing; when T iss＝TrWhen the temperature is high, constant temperature dehumidification is carried out, and S13 is executed; when T iss>TrIn the meantime, the temperature is raised and the dehumidification is performed, and S14 is executed;
s13: the frequency of the compressor is changed to Ahz, the outdoor fan is stopped after time delay Bs, the first electronic expansion valve is fully opened, and then S15 is executed;
s14: the frequency of the compressor is changed to Ahz, the outdoor fan is adjusted to a preset low wind level, the first electronic expansion valve is fully opened, and then S15 is executed;
s15: the reversing device is electrified to change the flow direction of the refrigerant, and the frequency of the compressor and the opening degree of the second electronic expansion valve are set according to the set temperature TsAnd the air-out temperature T of the air conditionerCAnd (4) adjusting the difference value of the step (c).
Specifically, the frequency A of the compressor is 30-50, and the delay time B of the outdoor fan is 30-60; the indoor fan and the outdoor fan are provided with fan motors which can be alternating current motors or direct current motors, the alternating current motors are at least provided with two gears, the lowest gear is a preset low wind gear of the fan, the rotating speed range of the direct current motors is at least divided into two rotating speed intervals, and the lowest rotating speed interval is a preset low wind gear of the fan.
Set up around along the air flow direction through setting up first indoor heat exchanger and second indoor heat exchanger, make the air that gets into the air conditioner pass through second indoor heat exchanger earlier and pass through first indoor heat exchanger again, open the dehumidification under the air conditioner refrigeration mode, get into constant temperature dehumidification and intensification dehumidification back, the switching-over device switching-over, make first indoor heat exchanger be the high temperature part, second indoor heat exchanger is the low temperature part, indoor air inlet becomes the cool wind that humidity is low behind the second indoor heat exchanger, it is hot-blast to heat through first indoor heat exchanger again, can avoid the cold and hot wind to mix inhomogeneously, more reasonable reaching constant temperature, the effect of intensification dehumidification, improve user experience, and indoor heat exchanger's connected mode is simple, and the cost is saved.
Referring to fig. 2, in step S15, the adjusting the compressor frequency and the opening of the second electronic expansion valve according to the difference between the set temperature and the air conditioner outlet air temperature includes: when the outlet air temperature TCSet temperature Ts>When 0, compressor frequency and second electron expansion valve aperture all reduce, through reducing compressor frequency and second electron expansion valve aperture for the air-out temperature reduces and is close to the settlement temperature, reaches the purpose that constant temperature dehumidified or intensification dehumidified.
Referring to fig. 2, in step S15, the adjusting the compressor frequency and the opening of the second electronic expansion valve according to the difference between the set temperature and the air conditioner outlet air temperature includes: when the outlet air temperature TCSet temperature TsWhen being equal to 0, the frequency of the compressor and the opening of the second electronic expansion valve are unchanged, so that the air outlet temperature is unchanged, and the purposes of constant temperature dehumidification or temperature rise dehumidification are achieved.
Referring to fig. 2, in step S15, the adjusting the compressor frequency and the opening of the second electronic expansion valve according to the difference between the set temperature and the air conditioner outlet air temperature includes: when the outlet air temperature TCSet temperature Ts<When 0, compressor frequency and second electron expansion valve aperture all increase for the air-out temperature risees and is close to the settlement temperature, reaches the purpose of constant temperature dehumidification or intensification dehumidification.
Referring to fig. 1, the step 12 further includes: when T iss<TrIf so, cooling and dehumidifying, and executing S16;
s16: the compressor frequency, the electronic expansion valve opening, the indoor fan speed and the outdoor fan speed are set in a normal refrigeration mode, and the second electronic expansion valve is fully opened.
In the process of executing step S16, the step S12 is executed in real time for the set temperature TsAnd indoor ambient temperature TrMaking a comparison when Ts<TrWhen the temperature is kept to be reduced and the dehumidification is performed, S16 is executed, when Ts＝TrWhen the temperature is high, constant temperature dehumidification is carried out, and S13 is executed; when T iss>TrIn this case, temperature rise and dehumidification are performed, and S14 is executed.
Referring to fig. 3 to 4, the setting temperature T is performed in real time during the execution of step S15sAnd indoor ambient temperature TrBy comparison, when S15 is executed during the constant temperature dehumidification, T iss<TrWhen the temperature is lowered, dehumidification is carried out, the reversing device reverses, and then S16 is executed; when T iss＝TrWhen the temperature is kept constant, the dehumidification is carried out, the frequency of the compressor and the opening degree of the second electronic expansion valve are according to the set temperature TsAnd the air-out temperature T of the air conditionerCAdjusting the difference value of (A); when T iss>TrWhen the temperature is higher than the set temperature T, the outdoor fan is adjusted to a preset low wind gear, the frequency of the compressor and the opening of the second electronic expansion valve are adjusted according to the set temperature TsAnd the air-out temperature T of the air conditionerCAnd (4) adjusting the difference value of the step (c). When S15 is executed during the temperature-raising dehumidification, when Ts<TrWhen the temperature is lowered, dehumidification is carried out, the reversing device reverses, and then S16 is executed; when T iss＝TrWhen the temperature is constant, dehumidification is carried out, the outdoor fan stops after time delay Cs, and the frequency of the compressor and the opening degree of the second electronic expansion valve are according to the set temperature TsAnd the air-out temperature T of the air conditionerCAdjusting the difference value of (A); when T iss>TrThe frequency of the compressor and the opening of the second electronic expansion valve are determined according to the set temperature TsAnd the air-out temperature T of the air conditionerCAnd (4) adjusting the difference value of the step (c). Can be real-time according to the set temperature TsAnd indoor ambient temperature TrThe relation of (2) changes the dehumidification mode, can satisfy user's requirement, improves user experience. And C can be determined according to the rotating speed of the fan during the refrigeration operation, the delay time B of the outdoor fan and the preset low wind gear of the outdoor fan.
S14: the compressor frequency is changed to Ahz, the outdoor fan is adjusted to a preset low level,
according to an embodiment of the present disclosure, referring to fig. 5, the air conditioner dehumidification method may further include the steps of:
s21: starting a dehumidification mode under the heating mode of the air conditioner and setting a set temperature Ts；
S22: for set temperature TsAnd indoor ambient temperature TrComparing; when T iss＝TrWhen the temperature is high, constant temperature dehumidification is carried out, and S23 is executed; when T iss>TrIn the meantime, the temperature is raised and the dehumidification is performed, and S24 is executed;
s23: adjusting the indoor fan to a preset low wind level, and then executing S25;
s24: the indoor fan is operated at the rotational speed of the heating operation before the dehumidification mode is turned on, and then S25 is performed;
s25: the rotating speed of the outdoor fan, the frequency of the compressor and the opening degree of the second electronic expansion valve are controlled according to the set temperature TsAnd the air-out temperature T of the air conditionerCAnd (4) adjusting the difference value, and fully opening the first electronic expansion valve.
Set up around along the air flow direction through setting up first indoor heat exchanger and second indoor heat exchanger, make the air that gets into the air conditioner pass through second indoor heat exchanger earlier and pass through first indoor heat exchanger again, open the dehumidification under the air conditioner heats the mode, get into constant temperature dehumidification and heat up the dehumidification after, make first indoor heat exchanger be high temperature component, second indoor heat exchanger is low temperature component, indoor air inlet becomes the cool wind that humidity is low behind second indoor heat exchanger, it is hot-blast to heat through first indoor heat exchanger again, can avoid cold and hot wind to mix inhomogeneous, more reasonable reach the constant temperature, the effect of intensification dehumidification, improve user experience, and indoor heat exchanger's connected mode is simple, and the cost is saved.
Referring to fig. 6, in the step S25, the outdoor fan rotation speed, the compressor frequency and the second electronic expansion valve opening degree are according to the set temperature TsAnd the air-out temperature T of the air conditionerCThe adjusting of the difference value comprises: when the outlet air temperature TCSet temperature Ts>0, compressor frequency and second electronic expansionThe opening degree of the expansion valve is reduced, and the rotating speed of the outdoor fan is reduced or kept stopped, so that the air outlet temperature is reduced and is close to the set temperature, and the purposes of constant temperature dehumidification or temperature rise dehumidification are achieved.
Referring to fig. 6, in the step S25, the outdoor fan rotation speed, the compressor frequency and the second electronic expansion valve opening degree are according to the set temperature TsAnd the air-out temperature T of the air conditionerCThe adjusting of the difference value comprises: when the outlet air temperature TCSet temperature TsWhen being equal to 0, the frequency of the compressor and the opening of the second electronic expansion valve are unchanged, and the rotating speed of the outdoor fan is unchanged, so that the air outlet temperature is unchanged, and the purposes of constant temperature dehumidification or temperature rise dehumidification are achieved.
Referring to fig. 6, in the step S25, the outdoor fan rotation speed, the compressor frequency and the second electronic expansion valve opening degree are according to the set temperature TsAnd the air-out temperature T of the air conditionerCThe adjusting of the difference value comprises: when the outlet air temperature TCSet temperature Ts<When the temperature is 0, the frequency of the compressor and the opening degree of the second electronic expansion valve are increased, the rotating speed of the outdoor fan is increased or the outdoor fan runs at a high speed, so that the air outlet temperature is increased and approaches to the set temperature, and the purposes of constant temperature dehumidification or temperature rise dehumidification are achieved.
Referring to FIG. 5, in the step S25, the set temperature T is measured in real time at S22sAnd indoor ambient temperature TrMaking a comparison when Ts＝TrWhen the temperature is high, constant temperature dehumidification is carried out, and S23 is executed; when T iss>TrIn this case, the temperature is raised and the dehumidification is performed, and S24 is executed, so that the set temperature T can be real-time determinedsAnd indoor ambient temperature TrThe relation of (2) changes the dehumidification mode, can satisfy user's requirement, improves user experience.
The present invention also provides an air conditioner, referring to fig. 7-9, the air conditioner can perform the above-mentioned dehumidification method of the air conditioner, the air conditioner includes a compressor 11, a reversing device 12, an indoor heat exchanger 13, a first electronic expansion valve 14, an outdoor heat exchanger 15, an indoor fan 16 and an outdoor fan 17; wherein the reversing device 12 is a four-way valve.
The indoor heat exchanger 13 includes a first indoor heat exchanger 131 and a second indoor heat exchanger 132, the first electronic expansion valve 14 is disposed between the second indoor heat exchanger 132 and the outdoor heat exchanger 15, the second indoor heat exchanger 132 and the first indoor heat exchanger 131 are disposed back and forth in the air flow direction, and a second electronic expansion valve 18 is disposed therebetween, and the indoor air entering the air conditioner passes through the second indoor heat exchanger 132 and the first indoor heat exchanger 131 in sequence and then is discharged from the air conditioner.
The air conditioner further comprises an indoor environment temperature sensor 19, an air outlet temperature sensor 20, an inner coil sensor 21 and an outer coil sensor (not shown), wherein the inner coil sensor 21 comprises a first inner coil sensor 211 and a second inner coil sensor 212, the indoor environment temperature sensor 19 is used for detecting the indoor environment temperature in real time, and the air outlet temperature sensor 20 is used for detecting the air outlet temperature in real time.
When the air conditioner operates in a refrigerating mode, after the air conditioner performs constant temperature dehumidification or temperature rise dehumidification, the reversing device reverses, high-temperature gaseous refrigerant discharged from an exhaust port of the compressor enters the first indoor heat exchanger through the reversing device, is changed into low-temperature and low-pressure liquid refrigerant through the second electronic expansion valve, enters the second indoor heat exchanger, flows into the first electronic expansion valve, and indoor inlet air is changed into cool air with low humidity through the second indoor heat exchanger and is heated into hot air through the first indoor heat exchanger; after the air conditioner is cooled and dehumidified, the compressor is communicated with the outdoor heat exchanger through the reversing device, and the flow direction of the refrigerant is the flow direction of the air conditioner during refrigeration.
Set up around along the air flow direction through setting up first indoor heat exchanger and second indoor heat exchanger, make the air that gets into the air conditioner pass through first indoor heat exchanger through second indoor heat exchanger earlier, open the dehumidification mode under the air conditioner refrigeration mode, get into constant temperature dehumidification and intensification dehumidification back, the switching-over device switching-over, make indoor air inlet become the cool wind that humidity is low behind the second indoor heat exchanger, it is hot-blast to heat through first indoor heat exchanger again, can avoid cold and hot wind to mix inhomogeneous, more reasonable reach constant temperature, the effect of intensification dehumidification, improve user experience, and indoor heat exchanger's connected mode is simple, and the cost is saved.
When the air conditioner is in heating operation, after the air conditioner enters constant temperature dehumidification or temperature rise dehumidification, high-temperature gaseous refrigerant discharged from an exhaust port of the compressor enters the first indoor heat exchanger through the reversing device, is changed into low-temperature and low-pressure liquid refrigerant after passing through the second electronic expansion valve, enters the second indoor heat exchanger, flows into the first electronic expansion valve, and indoor inlet air is changed into cool air with low humidity after passing through the second indoor heat exchanger and is heated into hot air through the first indoor heat exchanger.
Set up around along the air flow direction through setting up first indoor heat exchanger and second indoor heat exchanger, make the air that gets into the air conditioner pass through first indoor heat exchanger through second indoor heat exchanger earlier, the dehumidification mode of opening under the air conditioner heats the mode, get into constant temperature dehumidification and intensification dehumidification back, make indoor air inlet become the cool wind that humidity is low behind the indoor heat exchanger of second, it is hot-blast to heat through first indoor heat exchanger again, can avoid cold and hot wind to mix inhomogeneous, more reasonable reach the constant temperature, the effect of intensification dehumidification, improve user experience, and indoor heat exchanger's connected mode is simple, and the cost is saved.
The first indoor heat exchanger and the second indoor heat exchanger can be arranged in parallel, and the gap between the first indoor heat exchanger and the second indoor heat exchanger is X, wherein X is 5-10mm, so that the heat exchange effect is prevented from being influenced by the contact of the two indoor heat exchangers.
The air conditioner also comprises a refrigerant heat radiating device, wherein the refrigerant discharged from the first electronic expansion valve enters the reversing device through the refrigerant heat radiating device and the outdoor heat exchanger after entering constant temperature dehumidification or temperature rise dehumidification, and flows back to the air suction port of the compressor after being reversed by the reversing device.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. The dehumidification method of the air conditioner is characterized in that the air conditioner comprises an outdoor heat exchanger and an indoor heat exchanger, the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger, a first electronic expansion valve is arranged between the second indoor heat exchanger and the outdoor heat exchanger, the first indoor heat exchanger and the second indoor heat exchanger are arranged in the front and at the back in the air flow direction, and a second electronic expansion valve is arranged between the first indoor heat exchanger and the second indoor heat exchanger;
the dehumidification method comprises the following steps:
s11: starting a dehumidification mode in the refrigeration mode of the air conditioner and setting a set temperature Ts；
S12: for set temperature TsAnd indoor ambient temperature TrComparing; when T iss＝TrWhen the temperature is high, constant temperature dehumidification is carried out, and S13 is executed; when T iss>TrIn the meantime, the temperature is raised and the dehumidification is performed, and S14 is executed;
s13: the frequency of the compressor is changed to Ahz, the outdoor fan is stopped after time delay Bs, the first electronic expansion valve is fully opened, and then S15 is executed;
s14: the frequency of the compressor is changed to Ahz, the outdoor fan is adjusted to a preset low wind level, the first electronic expansion valve is fully opened, and then S15 is executed;
s15: the reversing device is electrified to change the flow direction of the refrigerant, and the frequency of the compressor and the opening degree of the second electronic expansion valve are set according to the set temperature TsAnd the air-out temperature T of the air conditionerCAnd (4) adjusting the difference value of the step (c).
2. The dehumidification method of an air conditioner according to claim 1, wherein in step S15, the adjusting of the compressor frequency and the opening of the second electronic expansion valve according to the difference between the set temperature and the air conditioner outlet air temperature comprises: when the outlet air temperature TCSet temperature Ts>At 0, both the compressor frequency and the second electronic expansion valve opening are reduced.
3. The dehumidification method of an air conditioner according to claim 1, wherein in step S15, the adjusting of the compressor frequency and the opening of the second electronic expansion valve according to the difference between the set temperature and the air conditioner outlet air temperature comprises: when the outlet air temperature TCSet temperature TsWhen the frequency is equal to 0, the frequency of the compressor and the opening degree of the second electronic expansion valve are unchanged.
4. The dehumidification method of an air conditioner according to claim 1, wherein in step S15, the adjusting of the compressor frequency and the opening of the second electronic expansion valve according to the difference between the set temperature and the air conditioner outlet air temperature comprises: when the outlet air temperature TCSet temperature Ts<At 0, both the compressor frequency and the second electronic expansion valve opening increase.
5. The dehumidifying method of claim 1, wherein the air conditioner further comprises an indoor fan, and the step 12 further comprises: when T iss<TrIf so, cooling and dehumidifying, and executing S16;
s16: the compressor frequency, the electronic expansion valve opening, the indoor fan speed and the outdoor fan speed are set in a normal refrigeration mode, and the second electronic expansion valve is fully opened.
6. The dehumidifying method of claim 5, wherein the setting temperature T is set in real time during the step S15sAnd indoor ambient temperature TrBy comparison, when S15 is executed during the constant temperature dehumidification, T iss<TrWhen the temperature is lowered, dehumidification is carried out, the reversing device reverses, and then S16 is executed; when T iss＝TrWhen the temperature is kept constant, the dehumidification is carried out, the frequency of the compressor and the opening degree of the second electronic expansion valve are according to the set temperature TsAnd the air-out temperature T of the air conditionerCAdjusting the difference value of (A); when T iss>TrWhen the temperature is higher than the set temperature T, the outdoor fan is adjusted to a preset low wind gear, the frequency of the compressor and the opening of the second electronic expansion valve are adjusted according to the set temperature TsAnd the air-out temperature T of the air conditionerCAnd (4) adjusting the difference value of the step (c).
7. The dehumidifying method of claim 5, wherein the setting temperature T is set in real time during the step S15sAnd indoor ambient temperature TrBy comparison, when the temperature rise dehumidification is performed as S15, T iss<TrWhen the temperature is lowered, dehumidification is carried out, the reversing device reverses, and then S16 is executed; when T iss＝TrWhen the temperature is constant, dehumidification is carried out, the outdoor fan stops after time delay Cs, and the frequency of the compressor and the opening degree of the second electronic expansion valve are according to the set temperature TsAnd the air-out temperature T of the air conditionerCAdjusting the difference value of (A); when T iss>TrThe frequency of the compressor and the opening of the second electronic expansion valve are determined according to the set temperature TsAnd the air-out temperature T of the air conditionerCAnd (4) adjusting the difference value of the step (c).
8. An air conditioner characterized by performing the dehumidifying method of the air conditioner according to any one of claims 1 to 7, the air conditioner comprising:
the system comprises a compressor, a reversing device, a first electronic expansion valve and an outdoor heat exchanger;
the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger, the first electronic expansion valve is arranged between the second indoor heat exchanger and the outdoor heat exchanger, the first indoor heat exchanger and the second indoor heat exchanger are arranged in the front and back direction along the air flow direction, and a second electronic expansion valve is arranged between the first indoor heat exchanger and the second indoor heat exchanger;
when the air conditioner operates in a refrigerating mode, after the air conditioner performs constant-temperature dehumidification or temperature rise dehumidification, the reversing device reverses, high-temperature gaseous refrigerant discharged from an exhaust port of the compressor enters the first indoor heat exchanger through the reversing device, is changed into low-temperature and low-pressure liquid refrigerant through the second electronic expansion valve, enters the second indoor heat exchanger, flows into the first electronic expansion valve, indoor inlet air is changed into cool air with low humidity through the second indoor heat exchanger, and is heated into hot air through the first indoor heat exchanger.
9. The air conditioner according to claim 8, wherein the first indoor heat exchanger and the second indoor heat exchanger are arranged in parallel, and a gap between the first indoor heat exchanger and the second indoor heat exchanger is 5-10 mm.
10. The air conditioner of claim 8, wherein the reversing device is a four-way valve.
CN202011202814.5A 2020-11-02 2020-11-02 Air conditioner dehumidification method and air conditioner Active CN112361526B (en)

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