CN114413612A - Method and device for controlling semi-closed heat pump drying equipment, electronic equipment and storage medium - Google Patents
Method and device for controlling semi-closed heat pump drying equipment, electronic equipment and storage medium Download PDFInfo
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- 238000001035 drying Methods 0.000 title claims abstract description 189
- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000007791 dehumidification Methods 0.000 claims description 99
- 230000000052 comparative effect Effects 0.000 claims description 8
- 239000003507 refrigerant Substances 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 4
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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
- 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
- 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
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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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
- 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable speed
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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
- F25B2600/00—Control issues
- F25B2600/11—Fan speed control
- F25B2600/112—Fan speed control of evaporator fans
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
Abstract
The application relates to the technical field of heat pump drying equipment, and discloses a method for controlling semi-closed heat pump drying equipment, wherein the semi-closed heat pump drying equipment comprises a fresh air valve; the semi-closed heat pump drying equipment also comprises a total heat exchanger; the total heat exchanger is used for heating air in a controlled manner; the method comprises the following steps: acquiring real-time air outlet temperature of an air outlet of a drying room of semi-closed heat pump drying equipment; and adjusting the fresh air valve and the total heat exchanger according to the real-time air outlet temperature to enable the real-time air outlet temperature of the air outlet of the drying room to reach the preset target air outlet temperature. Therefore, the air outlet temperature of the air at the air outlet can be adjusted to the preset target air outlet temperature without opening the frequency of the compressor to the maximum, the energy of heating the air at the air outlet is reduced, and the electric energy is saved. The application also discloses a device, an electronic device and a storage medium for controlling the semi-closed heat pump drying equipment.
Description
Technical Field
The present disclosure relates to the field of heat pump drying devices, and in particular, to a method and an apparatus for controlling a semi-enclosed heat pump drying device, an electronic device, and a storage medium.
Background
At present, the semi-closed heat pump drying equipment is widely applied to various fields, including the fields of chemical industry, medicines, products, wood, agricultural and sideline products and the like, and has the advantages of safety, environmental protection, energy conservation, high efficiency and the like. Under the condition of drying by using semi-closed heat pump drying equipment, the air entering the drying room comprises the entering fresh air, the returning air in the drying room and the air at the air outlet of the drying room after cooling and dehumidification. The evaporator of the drying system can heat air before entering the drying room, the heated air enters the drying room through the air inlet of the drying room to dry materials, and most of the dried air can leave the drying room from the air outlet of the drying room. Therefore, the temperature and the humidity of the air entering the baking room can influence the temperature and the humidity of the air outlet of the baking room.
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: semi-closed heat pump drying equipment among the prior art is after dehumidifying the air of air outlet, need open the frequency of compressor to the biggest in order to heat the air after the dehumidification, can consume a large amount of energy.
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 nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a method and a device for controlling semi-closed heat pump drying equipment, electronic equipment and a storage medium, so as to reduce energy required for heating dehumidified air.
In some embodiments, the semi-enclosed heat pump drying apparatus comprises a fresh air valve; the semi-closed heat pump drying equipment also comprises a total heat exchanger; the total heat exchanger is used for heating air in a controlled manner; the method for controlling the semi-closed type heat pump drying equipment comprises the following steps: acquiring the real-time air outlet temperature of an air outlet of a drying room of the semi-closed heat pump drying equipment; and adjusting the fresh air valve and the total heat exchanger according to the real-time air outlet temperature to enable the real-time air outlet temperature of the air outlet of the drying room to reach a preset target air outlet temperature.
In some embodiments, the semi-enclosed heat pump drying apparatus comprises a fresh air valve; the semi-closed heat pump drying equipment also comprises a total heat exchanger; the total heat exchanger is used for heating air in a controlled manner; the device for controlling the semi-closed type heat pump drying equipment comprises: the obtaining module is configured to obtain the real-time air outlet temperature of the drying room air outlet of the semi-closed heat pump drying equipment; and the adjusting module is configured to adjust the fresh air valve and the total heat exchanger according to the real-time air outlet temperature, so that the real-time air outlet temperature of the drying room air outlet reaches a preset target air outlet temperature.
In some embodiments, the apparatus for controlling a semi-enclosed heat pump drying apparatus includes: comprising a processor and a memory storing program instructions, the processor being configured to carry out the above-mentioned method for controlling a semi-closed heat pump drying apparatus when executing the program instructions.
In some embodiments, the electronic device comprises the above-mentioned device for controlling the semi-closed heat pump drying device.
In some embodiments, the storage medium stores program instructions that, when executed, perform the method for controlling a semi-closed heat pump drying apparatus described above.
The method and the device for controlling the semi-closed heat pump drying equipment, the electronic equipment and the storage medium provided by the embodiment of the disclosure can realize the following technical effects: the real-time air outlet temperature of the drying room air outlet of the semi-closed heat pump drying equipment is obtained, and the fresh air valve and the total heat exchanger are adjusted according to the real-time air outlet temperature, so that the real-time air outlet temperature of the drying room air outlet reaches the preset target air outlet temperature. Like this, adjust the volume of new trend through controlling the new trend valve to can utilize the temperature of new trend to adjust the temperature of the air of air outlet, utilize full heat exchanger can control the temperature of baking house air outlet air, need not open the frequency of compressor to the biggest just can adjust the air-out temperature of air outlet air to preset target air-out temperature, energy when having reduced the air of air outlet and having heated, practiced thrift the electric energy.
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(a) is a schematic structural diagram of a semi-closed heat pump drying apparatus provided in an embodiment of the present disclosure;
fig. 1(b) is a schematic block circuit diagram of a semi-closed heat pump drying device provided in an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a method for controlling a semi-closed heat pump drying device according to an embodiment of the disclosure;
fig. 3 is a schematic diagram of another method for controlling a semi-closed heat pump drying apparatus according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of another method for controlling a semi-closed heat pump drying apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of another method for controlling a semi-closed heat pump drying apparatus according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram of an apparatus for controlling a semi-closed heat pump drying device according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram of another apparatus for controlling a semi-closed heat pump drying device according to an embodiment of the present disclosure.
Reference numerals:
1: an evaporator; 2: an electronic expansion valve; 3: a dehumidification-side total heat exchanger; 4: a condenser; 5: a dehumidification evaporator; 6: a dehumidification electronic expansion valve; 7: a compressor; 8: a fresh air port side total heat exchanger; 9: a dehumidification evaporator side fan; 10: a temperature sensor; 11: a humidity sensor; 12: a fresh air valve; 13: a control unit.
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. For example, 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.
As shown in fig. 1(a) and 1(b), the semi-closed heat pump drying apparatus includes an evaporator 1, an electronic expansion valve 2, a dehumidification-side total heat exchanger 3, a condenser 4, a dehumidification evaporator 5, a dehumidification electronic expansion valve 6, a compressor 7, a fresh air inlet-side total heat exchanger 8, a dehumidification evaporator-side fan 9, a temperature sensor 10, a humidity sensor 11, a fresh air valve 12, and a control unit 13; semi-closed heat pump drying equipment is arranged in drying the material in the baking house to dry, and compressor 7 is used for carrying out heat pump drying equipment's cold medium matter circulation, and evaporimeter 1 is used for dehumidifying the baking house return air, and electronic expansion valve 2 is used for adjusting heat pump drying equipment's cold medium matter circulation, and condenser 4 is used for heating the air. The dehumidification evaporator side fan 9 is electrically connected with the control unit 13, the compressor 7 is electrically connected with the control unit 13, and the electronic expansion valve 2 is electrically connected with the control unit 13; a dehumidification evaporator side fan 9 is arranged on the dehumidification evaporator side and is controlled to blow air to the dehumidification evaporator 5 so as to reduce the superheat degree of the dehumidification evaporator 5; the dehumidification side total heat exchanger 3 is electrically connected with the control unit 13, and is controlled to heat the dehumidified air; the fresh air valve 12 is controlled to introduce fresh air; the fresh air inlet side total heat exchanger 8 is controlled to heat the introduced fresh air; the temperature sensor 10 is used for acquiring the real-time air outlet temperature of the air outlet of the drying room; the humidity sensor 11 is used for acquiring the real-time air outlet humidity of the air outlet of the drying room. The control unit 13 is used for acquiring the real-time air outlet temperature of the air outlet of the drying room of the semi-closed heat pump drying equipment; the control unit 13 adjusts the valve opening of the fresh air valve, the frequency of the fresh air inlet side total heat exchanger, the frequency of the compressor and the dehumidification side total heat exchanger according to the real-time air outlet temperature, so that the real-time air outlet temperature of the air outlet of the drying room reaches a preset target air outlet temperature; the control unit 13 adjusts the rotation speed of the side fan of the dehumidification evaporator and the valve opening of the dehumidification electronic expansion valve under the condition that the real-time air-out humidity is greater than the preset comparative humidity, so that the real-time air-out humidity of the air outlet of the drying room reaches the preset target air-out humidity.
Referring to fig. 2, an embodiment of the present disclosure provides a method for controlling a semi-closed heat pump drying apparatus, where the semi-closed heat pump drying apparatus includes a fresh air valve; the semi-closed heat pump drying equipment also comprises a total heat exchanger; the total heat exchanger is used for heating air in a controlled manner; the method comprises the following steps:
step S201, acquiring real-time air outlet temperature of an air outlet of a drying room of the semi-closed heat pump drying equipment.
Step S202, the fresh air valve and the total heat exchanger are adjusted according to the real-time air outlet temperature, so that the real-time air outlet temperature of the air outlet of the drying room reaches a preset target air outlet temperature.
By adopting the method for controlling the semi-closed heat pump drying equipment provided by the embodiment of the disclosure, the real-time air outlet temperature of the air outlet of the drying room of the semi-closed heat pump drying equipment is obtained, and the fresh air valve and the total heat exchanger are adjusted according to the real-time air outlet temperature, so that the real-time air outlet temperature of the air outlet of the drying room reaches the preset target air outlet temperature. Like this, adjust the volume of new trend through controlling the new trend valve to can utilize the temperature of new trend to adjust the temperature of the air of air outlet, utilize full heat exchanger can control the temperature of baking house air outlet air, need not open the frequency of compressor to the biggest just can adjust the air-out temperature of air outlet air to preset target air-out temperature, energy when having reduced the air of air outlet and having heated, practiced thrift the electric energy.
Optionally, the real-time outlet air temperature of the drying room air outlet of the semi-closed heat pump drying equipment is obtained through a temperature sensor. Optionally, the temperature sensor is arranged at an air outlet of the drying room of the semi-closed heat pump drying equipment.
Optionally, after the real-time air outlet temperature of the air outlet of the drying room reaches a preset target air outlet temperature, the semi-closed heat pump drying equipment is triggered to heat in a preset heating mode.
Optionally, the total heat exchanger comprises a fresh air side total heat exchanger; according to real-time air-out temperature regulation fresh air valve and total heat exchanger, include: acquiring a first air outlet temperature according to a preset target air outlet temperature; and under the condition that the real-time air outlet temperature is higher than the first air outlet temperature, adjusting the valve opening of the fresh air valve to the preset maximum valve opening, and closing the fresh air inlet side full heat exchanger. Like this, under the condition that real-time air-out temperature is greater than first air-out temperature, through adjusting the valve opening of fresh air valve to the biggest valve opening of predetermineeing, introduce a large amount of new trend, close fresh air inlet side full heat exchanger, do not heat the new trend of introducing, make the new trend of introducing unheated mix with the air of air outlet, can reduce the air temperature of air intake, thereby can reduce the real-time air-out temperature of air outlet in next circulation, need not adjust the temperature through adjusting the compressor frequency, under the circumstances of guaranteeing the heating effect, the electric energy has been practiced thrift.
Optionally, obtain first air-out temperature according to preset target air-out temperature, include: by calculating Tc1＝Tcm+10, obtaining a first outlet air temperature; wherein, Tc1The first outlet air temperature; t iscmIs the preset target outlet air temperature.
Optionally, the preset maximum valve opening is a maximum value of the valve opening of the fresh air valve.
In some embodiments, when the obtained real-time outlet air temperature is greater than the first outlet air temperature, the valve opening of the fresh air valve is adjusted to a preset maximum valve opening by adjusting the valve opening of the fresh air valve to a highest gear; and meanwhile, closing the full heat exchanger at the fresh air inlet side, and adjusting the real-time air outlet temperature of the air outlet of the drying room to a preset target air outlet temperature.
Optionally, the semi-closed heat pump drying equipment further comprises a compressor; after the valve opening of the fresh air valve is adjusted to the preset maximum valve opening and the fresh air port side total heat exchanger is closed, the method further comprises the following steps: acquiring a first time length; the first time length is the accumulated time length for adjusting the valve opening of the fresh air valve to the preset maximum valve opening; and reducing the frequency of the compressor under the condition that the first time length is longer than a preset second time length. Like this, when the long condition that is greater than the second of predetermineeing when utilizing the accumulation of new trend to adjust air outlet air temperature, through the frequency that reduces the compressor, can reduce condenser heat transfer volume to reduce the heating effect of condenser to gas, adjust the air-out temperature of air outlet air to predetermined target air-out temperature more fast, compare in directly utilizing the compressor to heat the air outlet air, energy when having reduced the air to the air outlet heats, practiced thrift the electric energy.
Optionally, the preset second period of time comprises 5 minutes, 10 minutes, 12 minutes, or the like.
Optionally, in the case that the first duration is longer than a preset second duration, reducing the frequency of the compressor includes: and reducing the frequency of the compressor under the condition that the first time length is longer than the preset second time length and the real-time air outlet temperature after the first time length is longer than the preset target air outlet temperature.
Optionally, reducing the frequency of the compressor comprises: the frequency of the compressor is reduced by a preset first step. Optionally, the preset first step size comprises 1 hz, 2 hz, 5 hz, 10 hz, or the like.
Optionally, reducing the frequency of the compressor by a preset first step comprises: and reducing the frequency of the compressor according to the preset first step length every a preset sixth time length. Alternatively, the preset sixth time period includes 30 seconds, 1 minute, 2 minutes, 3 minutes, 5 minutes, or the like. Like this, reduce the frequency of compressor according to predetermined first step length through every when predetermined sixth, can be accurate adjust real-time air-out temperature, avoid adjusting error to adjust real-time air-out temperature once more after too big to can improve the stoving effect of material in the baking house, energy saving.
In some embodiments, when the cumulative duration of the valve opening of the fresh air valve is adjusted to the preset maximum valve opening is longer than 10 minutes and the real-time outlet air temperature is higher than the preset target outlet air temperature, the frequency of the compressor is reduced by 5 hz every 2 minutes, so that the real-time outlet air temperature of the drying room air outlet is equal to the preset target outlet air temperature.
With reference to fig. 3, another method for controlling a semi-closed heat pump drying apparatus is provided in an embodiment of the present disclosure, including: the semi-closed heat pump drying equipment comprises a fresh air valve, a total heat exchanger and a compressor; the total heat exchanger is used for heating air in a controlled manner; the total heat exchanger comprises a fresh air inlet side total heat exchanger; the method comprises the following steps:
step S301, acquiring the real-time air outlet temperature of the air outlet of the drying room of the semi-closed heat pump drying equipment.
Step S302, a first outlet air temperature is obtained according to a preset target outlet air temperature.
Step S303, under the condition that the real-time air outlet temperature is higher than the first air outlet temperature, adjusting the valve opening of the fresh air valve to a preset maximum valve opening, and closing the fresh air inlet side full heat exchanger.
Step S304, acquiring a first time length; the first time period is an accumulated time period for adjusting the valve opening of the fresh air valve to a preset maximum valve opening.
Step S305, when the first time length is longer than the preset second time length and the real-time air-out temperature after the first time length is longer than the preset target air-out temperature, reducing the frequency of the compressor according to the preset first step length every preset sixth time length, so that the real-time air-out temperature of the air outlet of the drying room is equal to the preset target air-out temperature.
By adopting the method for controlling the semi-closed heat pump drying equipment provided by the embodiment of the disclosure, the real-time air outlet temperature of the air outlet of the drying room of the semi-closed heat pump drying equipment is obtained, the fresh air valve and the fresh air port side total heat exchanger are adjusted according to the real-time air outlet temperature, and the frequency of the compressor is reduced under the condition that the accumulated time of adjusting the fresh air valve meets the condition, so that the real-time air outlet temperature of the air outlet of the drying room is reduced to the preset target air outlet temperature. Like this, adjust the volume of new trend through controlling the new trend valve to can utilize the temperature of new trend to adjust the temperature of the air of air outlet, utilize the temperature that the full heat exchanger of new trend side can control the baking house air outlet air, and reduce the compressor frequency on this basis, need not open the frequency of compressor to the biggest just can adjust the air-out temperature of air outlet air to preset target air-out temperature, energy when having reduced the air of air outlet and having heated, practiced thrift the electric energy.
Optionally, the total heat exchanger comprises a dehumidification-side total heat exchanger; according to real-time air-out temperature regulation fresh air valve and total heat exchanger, include: acquiring a second air outlet temperature according to a preset target air outlet temperature; and under the condition that the real-time air outlet temperature is less than the preset target air outlet temperature and the real-time air outlet temperature is greater than the second air outlet temperature, adjusting the valve opening of the fresh air valve to the preset minimum valve opening, and opening the dehumidification side total heat exchanger. Like this, under the condition that real-time air-out temperature is less than preset target air-out temperature and real-time air-out temperature is greater than second air-out temperature, through adjusting the valve aperture of fresh air valve to preset minimum valve aperture, can reduce the new trend with the air-mixing of air outlet, thereby avoid real-time air-out temperature to reduce, then open dehumidification side total heat exchanger, can improve the temperature of the air after the dehumidification, make the real-time air-out temperature of baking house air outlet reach preset target air-out temperature, need not open the frequency of compressor to the biggest just can adjust the air-out temperature of air outlet air to preset target air-out temperature, energy when having reduced the air of air outlet and heating, the electric energy has been practiced thrift.
Optionally, obtain second air-out temperature according to preset target air-out temperature, include: by calculating Tc2＝Tcm-10 obtaining a second outlet air temperature; wherein, Tc2The second outlet air temperature.
Optionally, the preset minimum valve opening is a minimum value of a valve opening of the fresh air valve.
In some embodiments, the valve opening of the fresh air valve is adjusted to the lowest gear under the condition that the obtained real-time outlet air temperature is less than the target outlet air temperature and the real-time outlet air temperature is greater than the second outlet air temperature, so that the valve opening of the fresh air valve is adjusted to the preset minimum valve opening; meanwhile, the dehumidification side full heat exchanger is opened, and the real-time air outlet temperature of the air outlet of the drying room is adjusted to the preset target air outlet temperature.
Optionally, the semi-closed heat pump drying equipment further comprises a compressor; after adjusting the valve opening of fresh air valve to preset minimum valve opening and opening dehumidification side total heat exchanger, still include: acquiring a third time length; the third time is the accumulated time length for adjusting the valve opening of the fresh air valve to the preset minimum valve opening; and increasing the frequency of the compressor under the condition that the third time length is greater than the preset second time length. Therefore, under the condition that the accumulated time of the valve opening of the fresh air valve is adjusted to the preset minimum valve opening is longer than the preset second time, the system power can be increased by increasing the frequency of the compressor, so that the heat exchange quantity is increased, and the real-time air outlet temperature of the air outlet of the drying room can be increased more quickly. Meanwhile, after the fresh air valve and the dehumidification side full heat exchanger are used for heating, the frequency of the compressor is increased for heating, so that the energy for heating the air at the air outlet is reduced, and the electric energy is saved.
Optionally, in a case that the third duration is greater than the preset second duration, the method further includes: and closing the fresh air valve.
Optionally, in the case that the third duration is greater than the preset second duration, increasing the frequency of the compressor includes: and increasing the frequency of the compressor under the condition that the third time length is longer than the preset second time length and the real-time air outlet temperature after the third time length is shorter than the preset target air outlet temperature.
Optionally, increasing the frequency of the compressor comprises: the frequency of the compressor is increased by a predetermined second step. Optionally, the preset second step size comprises 1 hz, 2 hz, 5 hz, 10 hz, or the like.
Optionally, reducing the frequency of the compressor by a preset second step comprises: and increasing the frequency of the compressor according to the preset second step length every a preset seventh time length. Optionally, the preset second period of time includes 30 seconds, 1 minute, 2 minutes, 3 minutes, 5 minutes, or the like. Like this, through every when predetermineeing the seventh time according to the frequency of the long increase compressor of predetermined second step, can be accurate adjust real-time air-out temperature, avoid adjusting error after too big to adjust real-time air-out temperature once more to can improve the stoving effect of material in the baking house, energy saving.
In some embodiments, when the cumulative duration of the valve opening of the fresh air valve is adjusted to the preset minimum valve opening is longer than 10 minutes and the real-time outlet air temperature is lower than the preset target outlet air temperature, the frequency of the compressor is increased by 5 hz every 2 minutes, so that the real-time outlet air temperature of the drying room air outlet reaches the preset target outlet air temperature.
With reference to fig. 4, another method for controlling a semi-closed heat pump drying apparatus is provided in an embodiment of the present disclosure, where the semi-closed heat pump drying apparatus includes a fresh air valve, a total heat exchanger, and a compressor; the total heat exchanger is used for heating air in a controlled manner; the total heat exchanger comprises a dehumidification side total heat exchanger; the method comprises the following steps:
step S401, acquiring the real-time air outlet temperature of the air outlet of the drying room of the semi-closed heat pump drying equipment.
Step S402, obtaining a second outlet air temperature according to a preset target outlet air temperature.
Step S403, when the real-time outlet air temperature is lower than the target outlet air temperature and the real-time outlet air temperature is higher than the second outlet air temperature, adjusting the valve opening of the fresh air valve to a preset minimum valve opening, and opening the dehumidification-side total heat exchanger.
Step S404, acquiring a third duration; the third time period is an accumulated time period for adjusting the valve opening of the fresh air valve to a preset minimum valve opening.
Step S405, under the condition that the third time length is longer than the preset second time length and the real-time air outlet temperature after the third time length is shorter than the preset target air outlet temperature, increasing the frequency of the compressor according to the preset second step length every other preset seventh time length to enable the real-time air outlet temperature of the drying room air outlet to reach the preset target air outlet temperature.
By adopting the method for controlling the semi-closed heat pump drying equipment provided by the embodiment of the disclosure, the real-time air outlet temperature of the air outlet of the drying room of the semi-closed heat pump drying equipment is obtained, the fresh air valve and the dehumidification side total heat exchanger are adjusted according to the real-time air outlet temperature, and the frequency of the compressor is increased under the condition that the accumulated time of adjusting the fresh air valve meets the condition, so that the real-time air outlet temperature of the air outlet of the drying room is increased to the preset target air outlet temperature. Like this, reduce the volume of new trend through controlling the new trend valve to can utilize the temperature of new trend to adjust the temperature of the air of air outlet, utilize dehumidification side total heat exchanger to heat the air, and increase compressor frequency on this basis, need not open the frequency of compressor to the biggest just can adjust the air-out temperature of air outlet air to predetermined target air-out temperature, energy when having reduced the air to the air of air outlet and having heated, practiced thrift the electric energy.
Optionally, the semi-closed heat pump drying equipment further comprises a dehumidification evaporator and a dehumidification evaporator side fan; the dehumidification evaporator is used for controlling the dehumidification of return air of the drying room; the dehumidification evaporator side fan is used for blowing air to the dehumidification evaporator; the method for controlling the semi-closed type heat pump drying equipment further comprises the following steps: acquiring real-time air outlet humidity of an air outlet of a drying room of semi-closed heat pump drying equipment; and under the condition that the real-time outlet air humidity is greater than the preset comparative humidity, increasing the rotating speed of a side fan of the dehumidification evaporator. Like this, through under the condition that real-time air-out humidity is greater than predetermined comparative humidity, increase the rotational speed of dehumidification evaporimeter side fan, can reduce real-time air-out humidity to can realize the stoving to the interior material of baking house.
Optionally, the real-time outlet air humidity of the drying room air outlet of the semi-closed heat pump drying equipment is obtained through a humidity sensor. Optionally, the humidity sensor is arranged at an air outlet of the drying room of the semi-closed heat pump drying equipment.
Optionally, the predetermined comparative humidity comprises 90%, 85% or 80%.
Optionally, increasing the rotational speed of the dehumidification evaporator side fan comprises: and increasing the rotating speed of a side fan of the dehumidification evaporator according to a preset third step length every a preset eighth time length. Alternatively, the preset eighth time period includes 5 minutes, 10 minutes, 12 minutes, or the like. Optionally, the preset third step size comprises 5 rpm/sec, 10 rpm/sec, 15 rpm/sec, or the like.
Optionally, the semi-closed heat pump drying equipment further comprises a dehumidification electronic expansion valve; the dehumidification electronic expansion valve is communicated with the dehumidification evaporator; the dehumidifying evaporator and the dehumidifying electronic expansion valve form a refrigerant loop; the dehumidification electronic expansion valve is used for controlling and adjusting the refrigerant flow of the dehumidification evaporator; after increasing the rotational speed of dehumidification evaporimeter side fan, still include: acquiring a fourth time length; the fourth time is the accumulated time for increasing the rotating speed of the side fan of the dehumidification evaporator; and reducing the valve opening degree of the dehumidification electronic expansion valve under the condition that the fourth time length is longer than the preset fifth time length. Therefore, under the condition that the accumulated time for increasing the rotating speed of the dehumidification evaporator side fan is longer than the preset fifth time, the humidity of the air outlet can be reduced more quickly by reducing the valve opening degree of the dehumidification electronic expansion valve, and the drying of the materials in the drying room is realized.
Optionally, the preset fifth period of time comprises 10 minutes, 20 minutes or 25 minutes.
Optionally, in a case that the fourth time length is longer than a preset fifth time length, reducing a valve opening degree of the dehumidification electronic expansion valve includes: and reducing the valve opening degree of the dehumidification electronic expansion valve under the conditions that the fourth time length is longer than the preset fifth time length and the real-time outlet air humidity after the fourth time length is longer than the preset comparative humidity.
Optionally, reducing the valve opening of the dehumidification electronic expansion valve comprises: and reducing the valve opening degree of the dehumidification electronic expansion valve according to a preset fourth step length at a preset ninth time interval. Optionally, the preset ninth period of time comprises 1 minute, 5 minutes or 10 minutes. Optionally, the preset fourth step size includes 1, 2 or 5, etc.
Optionally, after the valve opening degree of the dehumidification electronic expansion valve is reduced, a preset target humidity value is obtained; acquiring a maximum target humidity value and a minimum target humidity value according to a preset target humidity value; and under the condition that the real-time outlet air humidity of the drying room air outlet is smaller than the preset maximum target humidity value and the real-time outlet air humidity is larger than the preset minimum target humidity value, stopping heating and dehumidifying.
Optionally, obtaining the maximum target humidity value and the minimum target humidity value according to a preset target humidity value includes: acquiring a preset deviation value; adding the target humidity value and the deviation value to obtain a maximum target humidity value; and determining the difference between the target humidity value and the deviation value as a minimum target humidity value. Optionally, the preset target humidity value comprises 30%. Optionally, the preset deviation value comprises 2%, 3%, 5%, or the like.
With reference to fig. 5, another method for controlling a semi-closed heat pump drying device is provided in an embodiment of the present disclosure, where the semi-closed heat pump drying device includes a fresh air valve, a dehumidification evaporator side fan, and a dehumidification electronic expansion valve; the semi-closed heat pump drying equipment also comprises a total heat exchanger; the total heat exchanger is used for heating air in a controlled manner; the dehumidification evaporator is used for controlling the dehumidification of return air of the drying room; the dehumidification evaporator side fan is used for blowing air to the dehumidification evaporator; the dehumidification electronic expansion valve is communicated with the dehumidification evaporator; the dehumidifying evaporator and the dehumidifying electronic expansion valve form a refrigerant loop; the dehumidification electronic expansion valve is used for controlling and adjusting the refrigerant flow of the dehumidification evaporator; the method comprises the following steps:
step S501, acquiring real-time air outlet temperature and real-time air outlet humidity of an air outlet of a drying room of the semi-closed heat pump drying equipment.
Step S502, the fresh air valve and the total heat exchanger are adjusted according to the real-time air outlet temperature, so that the real-time air outlet temperature of the air outlet of the drying room reaches the preset target air outlet temperature.
And step S503, increasing the rotating speed of a fan at the side of the dehumidification evaporator under the condition that the real-time outlet air humidity is greater than the preset comparative humidity.
Step S504, obtain the fourth time length; the fourth period is an accumulated period of time for increasing the rotation speed of the dehumidification evaporator side fan.
And step S505, reducing the valve opening degree of the dehumidification electronic expansion valve under the condition that the fourth time length is longer than a preset fifth time length.
By adopting the method for controlling the semi-closed heat pump drying equipment provided by the embodiment of the disclosure, the control of the drying temperature and the drying humidity is realized by acquiring the real-time air outlet temperature and the real-time air outlet humidity of the air outlet of the drying room of the semi-closed heat pump drying equipment, adjusting the fresh air valve and the total heat exchanger according to the real-time air outlet temperature, and adjusting the rotating speed of the side fan of the dehumidification evaporator and the valve opening of the dehumidification electronic expansion valve according to the real-time air outlet humidity, the temperature and the humidity of the air outlet are not only adjusted by adjusting the frequency of the compressor, the energy of the air at the air outlet during drying is reduced, and the electric energy is saved.
With reference to fig. 6, an embodiment of the present disclosure provides an apparatus for controlling a semi-closed heat pump drying device, where the semi-closed heat pump drying device includes a fresh air valve; the semi-closed heat pump drying equipment also comprises a total heat exchanger; the total heat exchanger is used for heating air in a controlled manner; the apparatus comprises an acquisition module 601 and an adjustment module 602. The obtaining module 601 is configured to obtain a real-time outlet air temperature of a drying room air outlet of the semi-closed heat pump drying equipment; the adjusting module 602 is configured to adjust the fresh air valve and the total heat exchanger according to the real-time outlet air temperature, so that the real-time outlet air temperature at the drying room outlet reaches a preset target outlet air temperature.
By adopting the device for controlling the semi-closed heat pump drying equipment provided by the embodiment of the disclosure, the real-time air outlet temperature of the air outlet of the drying room of the semi-closed heat pump drying equipment is obtained, and the fresh air valve and the total heat exchanger are adjusted according to the real-time air outlet temperature, so that the real-time air outlet temperature of the air outlet of the drying room reaches the preset target air outlet temperature. Like this, adjust the volume of new trend through controlling the new trend valve to can utilize the temperature of new trend to adjust the temperature of the air of air outlet, utilize full heat exchanger can control the temperature of baking house air outlet air, need not open the frequency of compressor to the biggest just can adjust the air-out temperature of air outlet air to preset target air-out temperature, energy when having reduced the air of air outlet and having heated, practiced thrift the electric energy.
Optionally, the total heat exchanger comprises a fresh air side total heat exchanger; the adjusting module is configured to adjust the fresh air valve and the total heat exchanger according to the real-time outlet air temperature by: acquiring a first air outlet temperature according to the target air outlet temperature; and under the condition that the real-time air outlet temperature is higher than the first air outlet temperature, adjusting the valve opening of the fresh air valve to the preset maximum valve opening, and closing the fresh air inlet side full heat exchanger.
Optionally, the semi-closed heat pump drying equipment further comprises a compressor; the device for controlling the semi-closed heat pump drying equipment further comprises a lowering module. The reduction module is configured to obtain a first time length; the first time length is the accumulated time length for adjusting the valve opening of the fresh air valve to the preset maximum valve opening; and reducing the frequency of the compressor under the condition that the first time length is longer than a preset second time length.
Optionally, the total heat exchanger comprises a dehumidification-side total heat exchanger; the adjusting module is configured to adjust the fresh air valve and the total heat exchanger according to the real-time outlet air temperature by: acquiring a second air outlet temperature according to the target air outlet temperature; and under the condition that the real-time air outlet temperature is less than the target air outlet temperature and the real-time air outlet temperature is greater than the second air outlet temperature, adjusting the valve opening of the fresh air valve to a preset minimum valve opening, and opening the dehumidification side total heat exchanger.
Optionally, the semi-closed heat pump drying equipment further comprises a compressor; the device for controlling the semi-closed heat pump drying equipment further comprises an adding module. The adding module is configured to obtain a third duration; the third time is the accumulated time length for adjusting the valve opening of the fresh air valve to the preset minimum valve opening; and increasing the frequency of the compressor under the condition that the third time length is greater than the preset second time length.
Optionally, the semi-closed heat pump drying equipment further comprises a dehumidification evaporator and a dehumidification evaporator side fan; the dehumidification evaporator is used for controlling the dehumidification of return air of the drying room; the dehumidification evaporator side fan is used for blowing air to the dehumidification evaporator; the device for controlling the semi-closed heat pump drying equipment further comprises a rotating speed adjusting module. The rotating speed adjusting module is configured to obtain real-time outlet air humidity of an air outlet of a drying room of the semi-closed heat pump drying equipment; and under the condition that the real-time outlet air humidity is greater than the preset comparative humidity, increasing the rotating speed of a side fan of the dehumidification evaporator.
Optionally, the semi-closed heat pump drying equipment further comprises a dehumidification electronic expansion valve; the dehumidification electronic expansion valve is communicated with the dehumidification evaporator; the dehumidifying evaporator and the dehumidifying electronic expansion valve form a refrigerant loop; the dehumidification electronic expansion valve is used for controlling and adjusting the refrigerant flow of the dehumidification evaporator; the device for controlling the semi-closed heat pump drying equipment further comprises a valve opening adjusting module. The valve opening adjustment module is configured to obtain a fourth time length; the fourth time is the accumulated time for increasing the rotating speed of the side fan of the dehumidification evaporator; and reducing the valve opening degree of the dehumidification electronic expansion valve under the condition that the fourth time length is longer than the preset fifth time length.
Referring to fig. 7, an apparatus for controlling a semi-closed heat pump drying device according to an embodiment of the present disclosure includes a processor (processor)100 and a memory (memory) 101. Optionally, the apparatus may also include a Communication Interface (Communication Interface)102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call logic instructions in the memory 101 to execute the method for controlling the semi-closed heat pump drying apparatus of the above embodiment.
In addition, the logic instructions in the memory 101 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 101, which is a computer-readable storage medium, may 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 100 executes functional applications and data processing by executing program instructions/modules stored in the memory 101, that is, implements the method for controlling the semi-closed heat pump drying apparatus in the above-described embodiment.
The memory 101 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, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
By adopting the device for controlling the semi-closed heat pump drying equipment provided by the embodiment, the real-time air outlet temperature of the air outlet of the drying room of the semi-closed heat pump drying equipment is obtained, and the fresh air valve and the total heat exchanger are adjusted according to the real-time air outlet temperature, so that the real-time air outlet temperature of the air outlet of the drying room reaches the preset target air outlet temperature. Like this, adjust the volume of new trend through controlling the new trend valve to can utilize the temperature of new trend to adjust the temperature of the air of air outlet, utilize full heat exchanger can control the temperature of baking house air outlet air, need not open the frequency of compressor to the biggest just can adjust the air-out temperature of air outlet air to preset target air-out temperature, energy when having reduced the air of air outlet and having heated, practiced thrift the electric energy.
The embodiment of the disclosure provides an electronic device, which comprises the device for controlling the semi-closed heat pump drying equipment.
The electronic equipment provided by the embodiment is adopted, the real-time air outlet temperature of the air outlet of the drying room of the semi-closed heat pump drying equipment is obtained, and the fresh air valve and the total heat exchanger are adjusted according to the real-time air outlet temperature, so that the real-time air outlet temperature of the air outlet of the drying room reaches the preset target air outlet temperature. Like this, adjust the volume of new trend through controlling the new trend valve to can utilize the temperature of new trend to adjust the temperature of the air of air outlet, utilize full heat exchanger can control the temperature of baking house air outlet air, need not open the frequency of compressor to the biggest just can adjust the air-out temperature of air outlet air to preset target air-out temperature, energy when having reduced the air of air outlet and having heated, practiced thrift the electric energy.
Optionally, the electronic device comprises a server or a semi-enclosed heat pump drying device.
The disclosed embodiments provide a storage medium storing computer-executable instructions configured to perform the above-described method for controlling a semi-enclosed heat pump drying apparatus.
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 that, when executed by a computer, cause the computer to perform the above-mentioned method for controlling a semi-closed heat pump drying apparatus.
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 an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises 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 brevity of description, the specific working processes of the system, the apparatus and the unit described above 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 place, or may be distributed on a plurality of 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 (11)
1. A method for controlling a semi-enclosed heat pump drying apparatus, the semi-enclosed heat pump drying apparatus comprising a fresh air valve; the semi-closed heat pump drying equipment is characterized by also comprising a total heat exchanger; the total heat exchanger is used for heating air in a controlled manner; the method comprises the following steps:
acquiring the real-time air outlet temperature of an air outlet of a drying room of the semi-closed heat pump drying equipment;
and adjusting the fresh air valve and the total heat exchanger according to the real-time air outlet temperature to enable the real-time air outlet temperature of the air outlet of the drying room to reach a preset target air outlet temperature.
2. The method of claim 1, wherein the enthalpy exchanger comprises a fresh air side enthalpy exchanger; adjusting the fresh air valve and the total heat exchanger according to the real-time outlet air temperature, comprising:
acquiring a first air outlet temperature according to the target air outlet temperature;
and under the condition that the real-time air outlet temperature is higher than the first air outlet temperature, adjusting the valve opening of the fresh air valve to a preset maximum valve opening, and closing the fresh air inlet side full heat exchanger.
3. The method of claim 2, the semi-enclosed heat pump drying apparatus further comprising a compressor; the method is characterized in that after the valve opening of the fresh air valve is adjusted to the preset maximum valve opening and the fresh air port side total heat exchanger is closed, the method further comprises the following steps:
acquiring a first time length; the first time length is the accumulated time length for adjusting the valve opening of the fresh air valve to the preset maximum valve opening;
and reducing the frequency of the compressor under the condition that the first time length is longer than a preset second time length.
4. The method of claim 1, wherein the total heat exchanger comprises a dehumidification-side total heat exchanger; adjusting the fresh air valve and the total heat exchanger according to the real-time outlet air temperature, comprising:
acquiring a second air outlet temperature according to the target air outlet temperature;
and under the condition that the real-time air outlet temperature is less than the target air outlet temperature and the real-time air outlet temperature is greater than the second air outlet temperature, adjusting the valve opening of the fresh air valve to a preset minimum valve opening, and opening the dehumidification side total heat exchanger.
5. The method of claim 4, the semi-enclosed heat pump drying apparatus further comprising a compressor; the method is characterized in that the valve opening of the fresh air valve is adjusted to a preset minimum valve opening and the dehumidification side total heat exchanger is opened, and the method further comprises the following steps:
acquiring a third time length; the third time is the accumulated time length for adjusting the valve opening of the fresh air valve to the preset minimum valve opening;
and increasing the frequency of the compressor under the condition that the third time length is greater than the preset second time length.
6. The method of any one of claims 1 to 5, the semi-enclosed heat pump drying apparatus further comprising a dehumidification evaporator and a dehumidification evaporator side fan; the dehumidification evaporator is used for dehumidifying return air of the drying room in a controlled manner; the dehumidification evaporator side fan is used for blowing air to the dehumidification evaporator; it is characterized by also comprising:
acquiring real-time air outlet humidity of an air outlet of a drying room of the semi-closed heat pump drying equipment;
and under the condition that the real-time air outlet humidity is greater than the preset comparative humidity, increasing the rotating speed of a side fan of the dehumidification evaporator.
7. The method of claim 6, wherein the semi-enclosed heat pump drying apparatus further comprises a dehumidification electronic expansion valve; the dehumidification electronic expansion valve is communicated with the dehumidification evaporator; the dehumidification evaporator and the dehumidification electronic expansion valve form a refrigerant loop; the dehumidification electronic expansion valve is used for controlling and adjusting the refrigerant flow of the dehumidification evaporator; after increasing dehumidification evaporimeter side fan's rotational speed, still include:
acquiring a fourth time length; the fourth time period is the accumulated time period for increasing the rotating speed of the side fan of the dehumidification evaporator;
and reducing the valve opening degree of the dehumidification electronic expansion valve under the condition that the fourth time length is longer than a preset fifth time length.
8. A device for controlling a semi-closed heat pump drying device comprises a fresh air valve; the semi-closed heat pump drying equipment is characterized by also comprising a total heat exchanger; the total heat exchanger is used for heating air in a controlled manner; the device comprises:
the obtaining module is configured to obtain the real-time air outlet temperature of the drying room air outlet of the semi-closed heat pump drying equipment;
and the adjusting module is configured to adjust the fresh air valve and the total heat exchanger according to the real-time air outlet temperature, so that the real-time air outlet temperature of the drying room air outlet reaches a preset target air outlet temperature.
9. An apparatus for controlling a semi-closed heat pump drying equipment, comprising a processor and a memory storing program instructions, characterized in that the processor is configured to execute the method for controlling a semi-closed heat pump drying equipment according to any one of claims 1 to 7 when executing the program instructions.
10. An electronic device, characterized by comprising the apparatus for controlling a semi-enclosed heat pump drying apparatus according to claim 9.
11. A storage medium storing program instructions, characterized in that the program instructions, when executed, perform a method for controlling a semi-closed heat pump drying apparatus according to any one of claims 1 to 7.
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| CN115493395A (en) * | 2022-09-20 | 2022-12-20 | 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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| CN115523741A (en) * | 2022-08-09 | 2022-12-27 | 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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