CN113959190B - Method and device for controlling heat pump dryer, electronic apparatus, and storage medium - Google Patents
Method and device for controlling heat pump dryer, electronic apparatus, and storage medium Download PDFInfo
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- CN113959190B CN113959190B CN202111204423.1A CN202111204423A CN113959190B CN 113959190 B CN113959190 B CN 113959190B CN 202111204423 A CN202111204423 A CN 202111204423A CN 113959190 B CN113959190 B CN 113959190B
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- 238000001035 drying Methods 0.000 claims abstract description 305
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- 238000007791 dehumidification Methods 0.000 claims abstract description 108
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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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
Abstract
The application relates to the technical field of heat pump dryer control, and discloses a method for controlling a heat pump dryer, which comprises the following steps: under the condition that a compressor of the first drying system breaks down, triggering the second drying system to heat, and adjusting the valve opening of the dehumidification electronic expansion valve to enable the dehumidification evaporator to refrigerate at a preset return air superheat degree; acquiring the heating time of a second drying system; and under the condition that the heating time is greater than or equal to a preset time threshold value, triggering the fresh air valve, the fresh air fan, the exhaust valve and the exhaust fan to be in an open state. Because second drying system is provided with dehumidification evaporimeter and dehumidification electronic expansion valve, make the dehumidification evaporimeter refrigerate with predetermined return air superheat degree through adjusting dehumidification electronic expansion valve's valve opening degree, strengthened second drying system's heating effect to drying effect has been promoted. The application also discloses a device for controlling the heat pump dryer, electronic equipment and a storage medium.
Description
Technical Field
The present application relates to the field of heat pump dryer control technologies, and for example, to a method and an apparatus for controlling a heat pump dryer, an electronic device, and a storage medium.
Background
At present, the heat pump dryer is widely applied to various fields, including the fields of chemical industry, medicine, products, wood, agricultural and sideline products and the like, and has the advantages of safety, environmental protection, energy conservation, high efficiency and the like. Most of existing heat pump dryers adopt two refrigerant circulating systems to run in parallel, each system is provided with a compressor, and the two compressors running in parallel are used for heating control so as to meet the drying requirements. In a heat pump dryer, many factors can cause compressor faults, such as too long overload running time of the compressor of the heat pump dryer, unreasonable oil return and the like. If one compressor breaks down, the drying temperature cannot meet the requirement of drying materials, so that the drying quality is influenced, and even the drying materials are damaged.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: in the prior art, under the condition of one system failure, the difference between two systems is not considered, and a fixed control mode is adopted for drying, so that the drying effect is poor.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended to be a prelude to the more detailed description that is presented later.
The disclosed embodiment provides a method and a device for controlling a heat pump dryer, an electronic device and a storage medium, so that when one compressor of the heat pump dryer fails, the compressor without the failure is controlled, and the drying effect of the heat pump dryer is improved.
In some embodiments, the heat pump dryer comprises a first drying system, a second drying system, a fresh air valve, a fresh air fan, an exhaust valve and an exhaust fan; the first drying system and the second drying system are used for heating a preset area in a controlled manner; the second drying system is provided with a dehumidification evaporator and a dehumidification electronic expansion valve; the dehumidification evaporator is used for controlling to dehumidify return air of a drying room, and the dehumidification electronic expansion valve is used for controlling and adjusting the return air superheat degree of the dehumidification evaporator; the method for controlling a heat pump dryer includes: under the condition that a compressor of the first drying system breaks down, triggering the second drying system to heat, and adjusting the valve opening degree of the electronic dehumidification expansion valve to enable the dehumidification evaporator to refrigerate at a preset return air superheat degree; acquiring the heating time of the second drying system; and under the condition that the heating time is greater than or equal to a preset time threshold value, triggering the fresh air valve, the fresh air fan, the exhaust valve and the exhaust fan to be in an opening state.
In some embodiments, the heat pump dryer comprises a first drying system, a second drying system, a fresh air valve, a fresh air fan, an exhaust valve and an exhaust fan; the first drying system and the second drying system are used for heating a preset area in a controlled manner; the second drying system is provided with a dehumidification evaporator and a dehumidification electronic expansion valve; the dehumidification evaporator is used for controlling to dehumidify return air of a drying room, and the dehumidification electronic expansion valve is used for controlling and adjusting the return air superheat degree of the dehumidification evaporator; the apparatus for controlling a heat pump dryer includes: the heating control module is configured to trigger the second drying system to heat and adjust the valve opening degree of the electronic dehumidification expansion valve to enable the dehumidification evaporator to refrigerate at a preset return air superheat degree under the condition that a compressor of the first drying system fails; an acquisition module configured to acquire a heating time of the second drying system; the dehumidification control module is configured to trigger the fresh air valve, the fresh air fan, the exhaust valve and the exhaust fan to be in an open state under the condition that the heating time is greater than or equal to a preset time threshold value.
In some embodiments, the apparatus for controlling a heat pump dryer includes a processor and a memory storing program instructions, the processor being configured to execute the above-described method for controlling a heat pump dryer when executing the program instructions.
In some embodiments, the electronic device includes the above-mentioned apparatus for controlling a heat pump dryer.
In some embodiments, the storage medium stores program instructions that, when executed, perform the method for controlling a heat pump dryer described above.
The method and the device for controlling the heat pump dryer, the electronic equipment and the storage medium provided by the embodiment of the disclosure can realize the following technical effects: the second drying system is triggered to heat under the condition that a compressor of the first drying system breaks down, the valve opening of the electronic dehumidification expansion valve is adjusted to enable the dehumidification evaporator to refrigerate at the preset return air superheat degree, the heating time of the second drying system is obtained, and under the condition that the heating time is larger than or equal to the preset time threshold value, the fresh air valve, the fresh air fan, the exhaust valve and the exhaust fan are triggered to be in an open state to perform dehumidification, so that the heat pump drying machine can control the second drying system to perform dehumidification under the condition that the compressor of the first drying system breaks down.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
fig. 1 is a schematic structural diagram of a heat pump dryer according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram illustrating the circuit principle of a heat pump dryer according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a method for controlling a heat pump dryer provided in an embodiment of the present disclosure;
fig. 4 is a schematic diagram of another method for controlling a heat pump dryer provided by an embodiment of the present disclosure;
fig. 5 is a schematic diagram of an apparatus for controlling a heat pump dryer provided in an embodiment of the present disclosure;
fig. 6 is a schematic diagram of another apparatus for controlling a heat pump dryer provided in an embodiment of the present disclosure.
Reference numerals:
1: an evaporator of the first drying system; 2: an evaporator of the second drying system; 3: a first gas-liquid separator; 4: a second gas-liquid separator; 5: a first low-voltage switch; 6: a second low voltage switch; 7: a compressor of the first drying system; 8: a compressor of the second drying system; 9: a first high voltage switch; 10: a second high voltage switch; 11: a first condenser; 12: a second condenser; 13: a first filter; 14: a second filter; 15: a dehumidification evaporator; 16: an electronic expansion valve of the first drying system; 17: an electronic expansion valve of the second drying system; 18: a dehumidification electronic expansion valve; 19: a fresh air valve; 20: fresh air fan: 21: an exhaust valve; 22 an exhaust fan; 23: an exhaust gas temperature sensor; 24: an intake air temperature sensor; 25: a humidity sensor; 26: a control unit; 27: and an electric auxiliary heating module.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. E.g., a and/or B, represents: a or B, or A and B.
The term "correspond" may refer to an association or binding relationship, and a corresponds to B refers to an association or binding relationship between a and B.
Referring to fig. 1, an embodiment of the present disclosure provides a schematic structural diagram of a heat pump dryer. As shown in fig. 1, the heat pump dryer includes a first drying system, a second drying system, and an electric auxiliary heating module. The first drying system comprises a compressor 7 of the first drying system, an electronic expansion valve 16 of the first drying system, an evaporator 1 of the first drying system, a first filter 13, a first condenser 11, a first low-pressure switch 5, a first high-pressure switch 9 and a first gas-liquid separator 3; the second drying system comprises a compressor 8 of the second drying system, an electronic expansion valve 17 of the second drying system, a dehumidification electronic expansion valve 18, an evaporator 2 of the second drying system, a second filter 14, a second condenser 12, a second low-pressure switch 6, a second high-pressure switch 10, a dehumidification evaporator 15 and a second gas-liquid separator 4. One end of a compressor of the first drying system is connected with one end of a first high-pressure switch, the other end of the compressor of the first drying system is connected with one end of a first low-pressure switch, the other end of the first low-pressure switch is connected with one end of a first gas-liquid separator, the other end of the first gas-liquid separator is connected with one end of an evaporator of the first drying system, the other end of the evaporator of the first drying system is connected with one end of an electronic expansion valve of the first drying system, the other end of the electronic expansion valve of the first drying system is connected with one end of a first filter, the other end of the first filter is connected with one end of a first condenser, and the other end of the first condenser is connected with the other end of the first high-pressure switch; one end of a compressor of the second drying system is connected with one end of a second high-pressure switch, the other end of the compressor of the second drying system is connected with one end of a second low-pressure switch, the other end of the second low-pressure switch is connected with one end of a second gas-liquid separator, the other end of the second gas-liquid separator is connected with one end of an evaporator of the second drying system, the other end of the evaporator of the second drying system is connected with one end of an electronic expansion valve of the second drying system, the other end of the electronic expansion valve of the second drying system is connected with one end of a second filter, the other end of the second filter is connected with one end of a second condenser, and the other end of the second condenser is connected with the other end of the second high-pressure switch; the other end of the electronic expansion valve of the second drying system is also connected with one end of the dehumidification electronic expansion valve, the other end of the dehumidification electronic expansion valve is connected with one end of the dehumidification evaporator, and the other end of the dehumidification evaporator is connected with one end of the evaporator of the second drying system. Therefore, through the arrangement of the first gas-liquid separator and the second gas-liquid separator, gas and liquid which flow out of the evaporator of the first drying system and the evaporator of the second drying system can be separated from gas, liquid refrigerants are prevented from entering the compressor of the first drying system and the compressor of the second drying system to cause liquid accumulation, the normal operation of the compressor of the first drying system and the compressor of the second drying system can be ensured, and the probability of faults of the compressor of the first drying system and the compressor of the second drying system caused by the liquid accumulation is reduced.
As shown in fig. 2, fig. 2 is a schematic view of a circuit principle of the heat pump dryer. The heat pump dryer controls a compressor 7 of a first drying system, a compressor 8 of a second drying system, an electronic expansion valve 16 of the first drying system, an electronic expansion valve 17 of the second drying system, a dehumidification electronic expansion valve 18, an electric auxiliary heating module 27, a fresh air valve 19, a fresh air fan 20, an exhaust valve 21, an exhaust fan 22, a humidity sensor 25, an exhaust temperature sensor 23 and an intake temperature sensor 24 through a control unit 26; the electronic expansion valve of the first drying system is arranged between the evaporator and the first filter of the first drying system, and the control unit controls the electronic expansion valve of the first drying system to open so that the first system can perform heating; the electronic expansion valve of the second drying system is arranged between the evaporator of the second drying system and the second filter, the dehumidification electronic expansion valve is arranged between the dehumidification evaporator and the second filter, and the control unit controls the electronic expansion valve of the second drying system to be opened so that the second system can perform heating; the control unit controls the electronic expansion valve of the second drying system to be closed and the dehumidifying electronic expansion valve to be opened, so that the second system dehumidifies; when any compressor of the heat pump dryer breaks down, the control unit does not control the electronic expansion valve and the dehumidifying electronic expansion valve of the second drying system to dehumidify, but controls the opening and closing of the fresh air valve, the fresh air fan, the exhaust valve and the exhaust fan to dehumidify; the electric auxiliary heating module is arranged on the side of the condenser, and the control unit controls the electric auxiliary heating module to start to heat under the condition that the first system and the second system heat; the exhaust temperature sensor comprises an exhaust temperature sensor of a first system and an exhaust temperature sensor of a second system, and the exhaust temperature sensor is used for monitoring the outlet air temperature of the air outlet of the heat pump dryer and feeding the outlet air temperature back to the control unit; the inlet air temperature sensor comprises an inlet air temperature sensor of a first system and an inlet air temperature sensor of a second system, and is used for monitoring the inlet air temperature of the air inlet of the heat pump dryer and feeding the inlet air temperature back to the control unit; the humidity sensor is used for monitoring the humidity in the drying room and feeding back the humidity in the drying room to the control unit.
Referring to fig. 3, an embodiment of the present disclosure provides a method for controlling a heat pump dryer, where the heat pump dryer includes a first drying system, a second drying system, a fresh air valve, a fresh air fan, an exhaust valve, and an exhaust fan; the first drying system and the second drying system are used for heating a preset area in a controlled manner; the second drying system is provided with a dehumidification evaporator and a dehumidification electronic expansion valve; the dehumidification evaporator is used for dehumidifying return air of the drying room in a controlled manner, and the electronic dehumidification expansion valve is used for regulating the superheat degree of the return air of the dehumidification evaporator in a controlled manner; the method for controlling a heat pump dryer includes:
and S301, under the condition that a compressor of the first drying system breaks down, triggering the second drying system to heat, and adjusting the valve opening degree of the dehumidification electronic expansion valve to enable the dehumidification evaporator to refrigerate at a preset return air superheat degree.
Step S302, heating time of the second drying system is obtained.
And step S303, under the condition that the heating time is more than or equal to a preset time threshold value, triggering the fresh air valve, the fresh air fan, the exhaust valve and the exhaust fan to be in an open state.
By adopting the method for controlling the heat pump dryer provided by the embodiment of the disclosure, the method and the device for controlling the heat pump dryer provided by the embodiment of the disclosure, the electronic device and the storage medium, the following technical effects can be realized: the second drying system is triggered to heat under the condition that a compressor of the first drying system breaks down, the valve opening of the electronic dehumidifying expansion valve is adjusted to enable the dehumidifying evaporator to refrigerate with the preset return air superheat degree, the heating time of the second drying system is obtained, and under the condition that the heating time is larger than or equal to the preset time threshold value, the fresh air valve, the fresh air fan, the exhaust valve and the exhaust air fan are triggered to be in an open state to exhaust moisture, so that the heat pump dryer can control the second drying system to exhaust moisture under the condition that the compressor of the first drying system breaks down.
Optionally, it is determined that the compressor of the first drying system is out of order by: determining whether a compressor of a first drying system is started; under the condition that a compressor of the first drying system is started, detecting the current passing through the compressor of the first drying system to obtain a current value; and determining that the compressor of the first drying system is out of order in case that the current value is less than or equal to the preset current value. Alternatively, the current passing through the compressor of the first drying system is detected by a device for current detection such as an ammeter.
Optionally, after determining that a compressor of the first drying system breaks down, generating alarm information; and sending the alarm information to a preset user terminal to prompt a worker using the user terminal to maintain a compressor of the first drying system.
Optionally, the preset return air superheat degree is any value in a preset range. Optionally, the preset range is 3-5.
In some embodiments, the heat pump dryer further comprises a dehumidification heat exchanger, the dehumidification heat exchanger and the dehumidification evaporator are placed in the same area, and the distance between the dehumidification heat exchanger and the dehumidification evaporator is smaller than a preset distance threshold value. Under the condition that the heat pump dryer normally works, the valve opening degree of the electronic dehumidification expansion valve is adjusted to enable the dehumidification evaporator to be in the return air superheat degree of 0 for dehumidification. When the return air superheat degree of the dehumidification evaporator is 0, the temperature of the dehumidification heat exchanger can be reduced to be lower than the dew point temperature, and the dehumidification function is realized. Under the condition that the first drying system of heat pump drying-machine breaks down, only rely on second drying system's heating function, there is very big probability unable drying demand that satisfies, so make the dehumidification evaporimeter refrigerate with predetermined return air superheat degree through adjusting dehumidification electronic expansion valve's valve opening degree, can increase the heat transfer ability of dehumidification heat exchanger, thereby strengthened second drying system's heating effect, can satisfy the drying demand.
Optionally, an exhaust fan is used for controlled exhaust. Therefore, the air is exhausted by the air exhaust fan, and the moist air in the drying room can be exhausted.
Optionally, the fresh air fan is used for controlled input of external fresh air; or the fresh air fan is used for controlling and inputting air with preset temperature and/or preset humidity.
In some embodiments, after the second drying system is heated, the moisture in the material to be dried in the drying room is changed into gas through evaporation, the exhaust valve and the exhaust fan are opened to exhaust the humid air in the drying room, the fresh air valve and the fresh air fan are opened to introduce the external fresh air into the drying room, the humid air in the drying room can be synthesized, and the effect of reducing the humidity in the drying room is achieved.
Optionally, triggering a second drying system to heat, comprising: acquiring a first heating amount of a heat pump dryer under the condition that a compressor of a first drying system fails; and under the condition that the first heating amount is smaller than a preset target heating amount, controlling the second drying system to heat according to the target heating amount.
Optionally, in the case that the first heating amount is smaller than a preset target heating amount, the method further comprises: and adjusting the valve opening degree of an electronic expansion valve of the second drying system to enable an evaporator of the second drying system to refrigerate at a preset return air superheat degree, so as to trigger the second drying system to heat.
Optionally, acquiring a first heating amount of the heat pump dryer in case of a failure of a compressor of the first drying system, comprises: acquiring a first outlet air temperature and a first drying air volume of an air outlet of a heat pump dryer under the condition that a compressor of a first drying system breaks down; and acquiring a first heating quantity according to the first air outlet temperature and the first drying air quantity.
Like this, through obtaining first air-out temperature and the first stoving amount of wind of the air outlet of heat pump drying-machine under the condition that the compressor of first drying system breaks down, and acquire first heating volume according to first air-out temperature and first stoving amount of wind, make first heating volume can be used for showing the energy of the air that heat pump drying-machine discharged under the condition that the compressor of first drying system breaks down, thereby make first heating volume can show the heating condition of heat pump drying-machine under the condition that the compressor of first drying system breaks down, thereby be convenient for control according to first heating volume the second drying system heats.
Optionally, the first outlet air temperature is obtained by collecting the first outlet air temperature of the air outlet of the heat pump dryer through an exhaust air temperature sensor arranged at the air outlet of the heat pump dryer in case of a failure of the compressor of the first drying system. Optionally, the exhaust temperature sensor is an exhaust temperature sensor of the second drying system.
Optionally, the first drying air volume of the heat pump dryer in case of a failure of the compressor of the first drying system is obtained by: acquiring a drying air volume gear preset by a user; acquiring the drying air volume corresponding to the drying air volume gear; and determining the drying air volume as a first drying air volume.
Optionally, obtain first heating volume according to first air-out temperature and first stoving amount of wind, include: acquiring a first inlet air temperature of an air inlet of a heat pump dryer under the condition that a compressor of a first drying system breaks down; and acquiring a first heating quantity according to the first air inlet temperature, the first air outlet temperature and the first drying air quantity.
Optionally, the first inlet air temperature is obtained by collecting the first inlet air temperature of the air inlet of the heat pump dryer through an inlet air temperature sensor arranged at the air inlet of the heat pump dryer in case of a failure of the compressor of the first drying system. Optionally, the inlet air temperature sensor is an inlet air temperature sensor of the second drying system.
Optionally, acquire first heating volume according to first air inlet temperature, first air-out temperature and first stoving amount of wind, include: by calculation ofQ＝(T 1 -T 2 )×q×aObtaining a first heating quantity; wherein the content of the first and second substances,Qin order to obtain the first heating amount,T 1 the temperature of the air is the first air-out temperature,T 2 the temperature of the first inlet air is the first inlet air temperature,qthe first drying air quantity is the first drying air quantity,ais a first latent heat compensation coefficient. Alternatively, the first latent heat compensation coefficient is determined according to a humidity value in the drying room in case of a failure of a compressor of the first drying system. Optionally, the first latent heat compensation coefficient is larger as the humidity value in the drying room is larger. Optionally, the humidity value in the drying room in case of a failure of the compressor of the first drying system is collected by a humidity sensor provided in the drying room.
Optionally, the determining the first latent heat compensation coefficient according to a humidity value in the drying room in case of a failure of a compressor of the first drying system comprises: by calculation of
Obtaining a first latent heat compensation coefficient; wherein the content of the first and second substances,bthe humidity value in the drying room under the condition that the compressor of the first drying system is in failure.
In some embodiments, the first latent heat compensation coefficient is higher as the humidity value in the drying room is larger in case of a failure of the compressor of the first drying system, is 1 in case of a failure of the compressor of the first drying system in which the humidity value in the drying room is 10% or more and the humidity value is 40% or less, and is increased by 0.01 as the humidity value in the drying room is increased by 1% in case of a failure of the compressor of the first drying system in which the humidity value in the drying room is 40% or more and the humidity value is 100% or less.
Optionally, controlling the second drying system to heat the drying room according to the target heating amount includes: acquiring a target operation frequency of the compressor according to the target heating amount; and triggering the compressor of the second drying system to operate according to the target operating frequency of the compressor to realize heating.
Optionally, the target compressor operating frequency is the compressor frequency required to dry the material in the drying room.
Like this, through obtaining compressor target operating frequency according to the target heating capacity, and trigger second drying system's compressor and realize the heating according to compressor target operating frequency operation, make second drying system's compressor realize the heating back according to compressor target operating frequency operation, can dry the interior material of baking house, avoid drying material rotten, guarantee the stoving effect, thereby under the condition that first drying system's compressor breaks down, the grade when can increase the interior material of baking house and receive and buy, increase income.
Optionally, obtaining the target operating frequency of the compressor according to the target heating amount includes: acquiring target compression frequency according to the target heating quantity; determining the target compression frequency as a target running frequency of the compressor under the condition that the target compression frequency is less than or equal to a preset rated frequency of the compressor; and/or determining the compressor rated frequency as the compressor target operation frequency under the condition that the target compression frequency is greater than the preset compressor rated frequency.
Optionally, the rated frequency of the compressor is a preset maximum frequency of the compressor of the second drying system.
Thus, a target compression frequency is obtained according to the target heating quantity, and then a target operation frequency of the compressor is determined according to the quantity relation between the target compression frequency and the rated frequency of the compressor, namely the target compression frequency is determined as the target operation frequency of the compressor under the condition that the target compression frequency is less than or equal to the preset rated frequency of the compressor; and/or determining the rated frequency of the compressor as the target operation frequency of the compressor under the condition that the target compression frequency is greater than the preset rated frequency of the compressor, so that the compressor of the second drying system can operate at the target operation frequency of the compressor, and the second drying system is heated to dry.
Optionally, obtaining the target compression frequency according to the target heating amount includes: by calculation of
Obtaining a target compression frequency; wherein the content of the first and second substances,Q 1 in order to heat the object, the heat quantity is increased,Fin order to target the compression frequency of the compressor,Kao_heatin order to convert the coefficients of the image,Kbo_heatis the conversion base. In some embodiments of the present invention, the,Kao_heatthe content of the acid was 0.84,Kbo_ heatis 0.1.
Optionally, the heat pump dryer further includes an electric auxiliary heating module, and after triggering the second drying system to heat, the heat pump dryer further includes: acquiring a second heating quantity of the heat pump dryer; and under the condition that the second heating amount is smaller than the preset target heating amount, triggering the electric auxiliary heating module to be in an opening state.
Optionally, obtaining a second heating amount of the heat pump dryer includes: acquiring a second air outlet temperature and a second drying air quantity of an air outlet of the heat pump dryer; and acquiring a second heating quantity according to the second air outlet temperature and the second drying air quantity.
Optionally, the second outlet air temperature of the air outlet of the heat pump dryer after the second drying system is triggered to heat is collected by an exhaust temperature sensor arranged at the air outlet of the heat pump dryer. Optionally, the exhaust temperature sensor is an exhaust temperature sensor of the second drying system.
Optionally, the second drying air volume of the heat pump dryer after the second drying system is triggered to heat is obtained by: acquiring a drying air quantity gear preset by a user; acquiring the drying air volume corresponding to the drying air volume gear; and determining the drying air volume as a second drying air volume.
Optionally, obtain the second heating volume according to second air-out temperature and second stoving amount of wind, include: acquiring a second inlet air temperature of an air inlet of the heat pump dryer; and acquiring a second heating quantity according to the second air inlet temperature, the second air outlet temperature and the second drying air quantity.
Optionally, the second inlet air temperature is obtained by collecting the second inlet air temperature of the air inlet of the heat pump dryer through an inlet air temperature sensor arranged at the air inlet of the heat pump dryer. Optionally, the inlet air temperature sensor is an inlet air temperature sensor of the second drying system.
Optionally, obtain the second heating volume according to second air inlet temperature, second air-out temperature and the second stoving amount of wind, include: by calculation of
Obtaining a second heating quantity; wherein, the first and the second end of the pipe are connected with each other,
in order to provide the second amount of heating,T 3 the temperature of the second air outlet is the second air outlet temperature,T 4 the temperature of the second inlet air is the temperature of the second inlet air,
the second drying air quantity is set as the second drying air quantity,
is a second latent heat compensation coefficient. Optionally, the second latent heat compensation coefficient is determined according to a humidity value in the drying room.
Optionally, determining a second latent heat compensation coefficient according to the humidity value in the drying room comprises: by calculating
Obtaining a second latent heat compensation coefficient; wherein the content of the first and second substances,
the humidity value in the drying room after the second drying system is triggered to heat.
In some embodiments, in the case that the target compression frequency is greater than a preset compressor rated frequency, determining the compressor rated frequency as a compressor target operation frequency; triggering a compressor of a second drying system to operate according to the target operation frequency of the compressor to realize heating, and then obtaining a second heating quantity of the heat pump dryer; and under the condition that the second heating quantity is smaller than the preset target heating quantity, determining that the heating condition of the second drying system cannot meet the target heating quantity corresponding to the drying requirement, and triggering the electric auxiliary heating module to be in an open state.
With reference to fig. 4, another method for controlling a heat pump dryer is provided in the embodiments of the present disclosure, where the heat pump dryer includes a first drying system, a second drying system, a fresh air valve, a fresh air fan, an exhaust valve, and an exhaust fan; the first drying system and the second drying system are used for heating a preset area in a controlled manner; the second drying system is provided with a dehumidification evaporator and a dehumidification electronic expansion valve; the dehumidification evaporator is used for controlling dehumidification of return air of the drying room, and the electronic dehumidification expansion valve is used for controlling adjustment of the superheat degree of the return air of the dehumidification evaporator; the method for controlling a heat pump dryer includes:
and step S401, under the condition that a compressor of the first drying system breaks down, triggering the second drying system to heat, and adjusting the valve opening degree of the electronic dehumidification expansion valve to enable the dehumidification evaporator to refrigerate at a preset return air superheat degree.
Step S402, a second heating amount of the heat pump dryer is acquired.
And S403, triggering the electric auxiliary heating module to be in an open state under the condition that the second heating amount is smaller than a preset target heating amount.
And S404, acquiring the heating time of the second drying system.
And S405, under the condition that the heating time is greater than or equal to a preset time threshold value, triggering the fresh air valve, the fresh air fan, the exhaust valve and the exhaust fan to be in an open state.
When the compressor of the first drying system is in failure, the second drying system is triggered to heat, the valve opening of the electronic dehumidification expansion valve is adjusted to enable the dehumidification evaporator to refrigerate at a preset return air superheat degree, the second heating quantity of the heat pump dryer is obtained, when the second heating quantity is smaller than the preset target heating quantity, the electric auxiliary heating module is triggered to be in an open state, the heating time of the second drying system is obtained, when the heating time is larger than or equal to a preset time threshold value, the fresh air valve, the fresh air fan, the exhaust valve and the exhaust fan are triggered to be in an open state, the fact that the second drying system is provided with the electronic dehumidification expansion valve and the dehumidification evaporator is considered, the dehumidification evaporator is enabled to refrigerate at the preset return air superheat degree through adjusting the valve opening of the electronic dehumidification expansion valve, the heating quantity of the second drying system is increased, and when the second heating quantity is smaller than the preset target heating quantity is considered, the electric auxiliary heating module is triggered to be in an open state, heating is further, the heating quantity is increased, and the final heating quantity is enabled to be closer to the target heating quantity, and the drying effect is better.
Referring to fig. 5, an embodiment of the present disclosure provides a device for controlling a heat pump dryer, where the heat pump dryer includes a first drying system, a second drying system, a fresh air valve, a fresh air fan, an exhaust valve, and an exhaust fan; the first drying system and the second drying system are used for heating a preset area in a controlled manner; the second drying system is provided with a dehumidification evaporator and a dehumidification electronic expansion valve; the dehumidification evaporator is used for dehumidifying return air of the drying room in a controlled manner, and the electronic dehumidification expansion valve is used for regulating the superheat degree of the return air of the dehumidification evaporator in a controlled manner; the apparatus for controlling the heat pump dryer includes a heating control module 501, an acquisition module 502, and a dehumidification control module 503. The heating control module 501 is configured to trigger the second drying system to heat and adjust the valve opening of the dehumidification electronic expansion valve to cool the dehumidification evaporator with a preset return air superheat degree in case of a failure of the compressor of the first drying system; the acquiring module 502 is configured to acquire a heating time of the second drying system; the dehumidification control module 503 is configured to trigger the fresh air valve, the fresh air fan, the exhaust valve, and the exhaust fan to be in an on state if the heating time is greater than or equal to a preset time threshold.
By adopting the device for controlling the heat pump dryer provided by the embodiment of the disclosure, the method and the device for controlling the heat pump dryer provided by the embodiment of the disclosure, the electronic device and the storage medium, the following technical effects can be realized: the second drying system is triggered to heat under the condition that a compressor of the first drying system breaks down, the valve opening of the electronic dehumidifying expansion valve is adjusted to enable the dehumidifying evaporator to refrigerate at the preset return air superheat degree, the heating time of the second drying system is obtained, and under the condition that the heating time is larger than or equal to the preset time threshold value, the fresh air valve is triggered, the fresh air fan, the exhaust valve and the exhaust fan are in an open state to perform dehumidification, and the heat pump drying machine can control the second drying system to perform dehumidification under the condition that the compressor of the first drying system breaks down.
Optionally, the heating control module is configured to trigger the second drying system to heat by: acquiring a first heating amount of a heat pump dryer under the condition that a compressor of a first drying system fails; and under the condition that the first heating amount is smaller than a preset target heating amount, controlling the second drying system to heat according to the target heating amount.
Optionally, the heating control module is configured to obtain the first heating amount of the heat pump dryer in case of a failure of a compressor of the first drying system by: acquiring a first outlet air temperature and a first drying air volume of an air outlet of a heat pump dryer under the condition that a compressor of a first drying system breaks down; and acquiring a first heating quantity according to the first air outlet temperature and the first drying air quantity.
Optionally, the heating control module is configured to control the second drying system to heat the drying room according to the first heating amount by: acquiring a target operation frequency of the compressor according to the target heating amount; and triggering the compressor of the second drying system to operate according to the target operating frequency of the compressor to realize heating.
Optionally, the heating control module is configured to obtain the target operating frequency of the compressor from the target heating amount by: acquiring target compression frequency according to the target heating quantity; determining the target compression frequency as a target operation frequency of the compressor under the condition that the target compression frequency is less than or equal to a preset rated frequency of the compressor; and/or determining the compressor rated frequency as the compressor target operation frequency under the condition that the target compression frequency is greater than the preset compressor rated frequency.
Optionally, the apparatus for controlling a heat pump dryer further includes a triggering module, where the triggering module is configured to trigger the second drying system to heat and then obtain a second heating amount of the heat pump dryer; and under the condition that the second heating amount is smaller than the preset target heating amount, triggering the electric auxiliary heating module to be in an opening state.
As shown in fig. 6, an embodiment of the present disclosure provides an apparatus for controlling a heat pump dryer, including a processor (processor) 600 and a memory (memory) 601. Optionally, the apparatus may also include a Communication Interface 602 and a bus 603. The processor 600, the communication interface 602, and the memory 601 may communicate with each other via a bus 603. The communication interface 602 may be used for information transfer. The processor 600 may invoke logic instructions in the memory 601 to perform the method for controlling a heat pump dryer of the above embodiments.
In addition, the logic instructions in the memory 601 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 601 is a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 600 performs functional applications and data processing, i.e., implements the method for controlling the heat pump dryer in the above-described embodiment, by executing program instructions/modules stored in the memory 601.
The memory 601 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, memory 601 may include high speed random access memory and may also include non-volatile memory.
By adopting the device for controlling the heat pump dryer provided by the embodiment of the disclosure, when the compressor of the first drying system fails, the second drying system is triggered to heat, and the valve opening of the electronic dehumidification expansion valve is adjusted to enable the dehumidification evaporator to refrigerate at the preset return air superheat degree, so as to obtain the heating time of the second drying system, and when the heating time is greater than or equal to the preset time threshold value, the fresh air valve, the fresh air fan, the exhaust valve and the exhaust fan are triggered to be in an open state for dehumidification, so that the heat pump dryer can control the second drying system to dehumidify when the compressor of the first drying system fails, and thus, because the second drying system is provided with the dehumidification evaporator for controlling to dehumidify return air of a drying room and the electronic dehumidification expansion valve for controlling and adjusting the return air superheat degree of the dehumidification evaporator, the dehumidification evaporator is enabled to refrigerate at the preset return air superheat degree by adjusting the valve opening of the electronic dehumidification expansion valve, the heating effect of the second drying system can be enhanced, the possibility of materials to be dried is reduced, the quality of the dried materials is improved, and the drying deteriorated quality is further improved.
The embodiment of the disclosure provides an electronic device, which comprises the device for controlling the heat pump dryer.
Alternatively, the electronic device includes a heat pump dryer or the like.
By adopting the electronic equipment provided by the embodiment of the disclosure, under the condition that the compressor of the first drying system fails, the second drying system is triggered to heat, the valve opening of the electronic dehumidification expansion valve is adjusted to enable the dehumidification evaporator to refrigerate at the preset return air superheat degree, the heating time of the second drying system is obtained, and under the condition that the heating time is greater than or equal to the preset time threshold value, the fresh air valve, the fresh air fan, the exhaust valve and the exhaust fan are triggered to be in the opening state for dehumidification, so that the heat pump dryer can control the second drying system to dehumidify under the condition that the compressor of the first drying system fails.
The disclosed embodiments provide a storage medium storing computer-executable instructions configured to perform the above-described method for controlling a heat pump dryer.
The disclosed embodiments provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to carry out the above-mentioned method for controlling a heat pump dryer.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising a" \8230; "does not exclude the presence of additional like elements in a process, method or apparatus comprising the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses, and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (8)
1. A method for controlling a heat pump dryer, the heat pump dryer comprising a first drying system, a second drying system, a fresh air valve, a fresh air blower, an exhaust valve and an exhaust blower; the first drying system and the second drying system are used for heating a preset area in a controlled manner; the second drying system is provided with a dehumidification evaporator and a dehumidification electronic expansion valve; the dehumidification evaporator is used for controlling to dehumidify return air of a drying room, and the dehumidification electronic expansion valve is used for controlling and adjusting the return air superheat degree of the dehumidification evaporator; the method comprises the following steps:
under the condition that a compressor of the first drying system breaks down, triggering the second drying system to heat, and adjusting the valve opening degree of the electronic dehumidification expansion valve to enable the dehumidification evaporator to refrigerate at a preset return air superheat degree;
acquiring the heating time of the second drying system;
under the condition that the heating time is greater than or equal to a preset time threshold value, triggering the fresh air valve, the fresh air fan, the exhaust valve and the exhaust fan to be in an opening state;
triggering the second drying system to heat, including: acquiring a first heating amount of the heat pump dryer in case of a failure of a compressor of the first drying system; under the condition that the first heating amount is smaller than a preset target heating amount, controlling the second drying system to heat according to the target heating amount;
acquiring a first heating amount of the heat pump dryer in case of a failure of a compressor of the first drying system, comprising: acquiring a first outlet air temperature of an air outlet, a first inlet air temperature of an air inlet and a first drying air quantity of the heat pump dryer under the condition that a compressor of the first drying system breaks down; acquiring the first heating quantity according to the first air inlet temperature, the first air outlet temperature and the first drying air quantity;
obtain first heating volume according to first air inlet temperature, first air-out temperature and first stoving amount of wind, include: by calculating Q = (T) 1 -T 2 )×q×aObtaining a first heating quantity; wherein Q is a first heating amount, T 1 Is the first outlet air temperature, T 2 The temperature of the first air inlet is the first air inlet temperature,qthe first drying air quantity is the first drying air quantity,aa first latent heat compensation coefficient;
the first latent heat compensation coefficient is determined according to a humidity value in a drying room under the condition that a compressor of the first drying system is in fault, and the larger the humidity value in the drying room is, the larger the first latent heat compensation coefficient is.
2. The method of claim 1, wherein controlling the second drying system to heat the drying room according to the target heating amount comprises:
acquiring a target operation frequency of the compressor according to the target heating amount;
and triggering the compressor of the second drying system to operate according to the target operation frequency of the compressor to realize heating.
3. The method of claim 2, wherein obtaining a target operating frequency of the compressor based on the target amount of heating comprises:
acquiring target compression frequency according to the target heating quantity;
determining the target compression frequency as a target operation frequency of the compressor under the condition that the target compression frequency is less than or equal to a preset rated frequency of the compressor; and/or determining the compressor rated frequency as a compressor target operation frequency under the condition that the target compression frequency is greater than a preset compressor rated frequency.
4. The method of claim 3, said heat pump dryer further comprising an electric auxiliary heating module, wherein said triggering said second drying system to heat further comprises:
acquiring a second heating quantity of the heat pump dryer;
and under the condition that the second heating amount is smaller than the preset target heating amount, triggering the electric auxiliary heating module to be in an opening state.
5. A device for controlling a heat pump dryer comprises a first drying system, a second drying system, a fresh air valve, a fresh air fan, an exhaust valve and an exhaust fan; the first drying system and the second drying system are used for heating a preset area in a controlled manner; the second drying system is provided with a dehumidification evaporator and a dehumidification electronic expansion valve; the dehumidification evaporator is used for dehumidifying return air of a drying room in a controlled manner, and the dehumidification electronic expansion valve is used for regulating the superheat degree of the return air of the dehumidification evaporator in a controlled manner; the device comprises:
the heating control module is configured to trigger the second drying system to heat and adjust the valve opening degree of the electronic dehumidification expansion valve to enable the dehumidification evaporator to refrigerate at a preset return air superheat degree under the condition that a compressor of the first drying system fails;
an acquisition module configured to acquire a heating time of the second drying system;
the dehumidification control module is configured to trigger the fresh air valve, the fresh air fan, the exhaust valve and the exhaust fan to be in an opening state when the heating time is greater than or equal to a preset time threshold value;
the heating control module is configured to trigger the second drying system to heat by: acquiring a first heating amount of the heat pump dryer in case of a failure of a compressor of the first drying system; under the condition that the first heating amount is smaller than a preset target heating amount, controlling the second drying system to heat according to the target heating amount;
the heating control module is configured to acquire a first heating amount of the heat pump dryer in case of a malfunction of a compressor of the first drying system by: acquiring a first outlet air temperature of an air outlet, a first inlet air temperature of an air inlet and a first drying air quantity of the heat pump dryer under the condition that a compressor of the first drying system breaks down; acquiring the first heating quantity according to the first air inlet temperature, the first air outlet temperature and the first drying air quantity;
obtain first heating volume according to first air inlet temperature, first air-out temperature and first stoving amount of wind, include: by calculating Q = (T) 1 -T 2 )×q×aObtaining a first heating quantity; wherein Q is a first heating amount, T 1 Is the first outlet air temperature, T 2 The temperature of the first air inlet is the first air inlet temperature,qthe first drying air quantity is the first drying air quantity,aa first latent heat compensation coefficient;
the first latent heat compensation coefficient is determined according to a humidity value in a drying room under the condition that a compressor of the first drying system is in fault, and the larger the humidity value in the drying room is, the larger the first latent heat compensation coefficient is.
6. An apparatus for controlling a heat pump dryer comprising a processor and a memory storing program instructions, characterized in that the processor is configured to carry out the method for controlling a heat pump dryer according to any one of claims 1 to 4 when executing the program instructions.
7. An electronic apparatus characterized by comprising the device for controlling a heat pump dryer according to claim 6.
8. A storage medium storing program instructions, characterized in that, when run, the program instructions perform the method for controlling a heat pump dryer according to any one of claims 1 to 4.
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| CN115111903B (en) * | 2022-06-13 | 2024-01-16 | 青岛海尔空调器有限总公司 | Dryer exhaust gas treatment system and method |
| CN115523743B (en) * | 2022-08-09 | 2023-12-15 | 青岛海尔空调器有限总公司 | Heat pump dryer and control method thereof |
| CN115523741B (en) * | 2022-08-09 | 2023-12-19 | 青岛海尔空调器有限总公司 | Control method and device of heat pump dryer and heat pump dryer |
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