CN110455070A - A kind of multi-state heat pump drier system and its control method - Google Patents

A kind of multi-state heat pump drier system and its control method Download PDF

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Publication number
CN110455070A
CN110455070A CN201910744883.XA CN201910744883A CN110455070A CN 110455070 A CN110455070 A CN 110455070A CN 201910744883 A CN201910744883 A CN 201910744883A CN 110455070 A CN110455070 A CN 110455070A
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China
Prior art keywords
heat exchanger
valve
port
fluid reservoir
flow
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Pending
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CN201910744883.XA
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Chinese (zh)
Inventor
李�和
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Hubei University of Arts and Science
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Hubei University of Arts and Science
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Priority to CN201910744883.XA priority Critical patent/CN110455070A/en
Publication of CN110455070A publication Critical patent/CN110455070A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00Heat pumps
    • F25B30/02Heat pumps of the compression type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08Humidity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00Heating arrangements
    • F26B23/10Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention discloses a kind of multi-state heat pump drier system and its control methods, comprising: indoors, third heat exchanger is arranged in outdoor for First Heat Exchanger, the setting of the second heat exchanger;The control of constant temperature dehumidifier operating condition;The control of constant temperature dehumidifier reduction room temperature operating condition;The control of heating drying operating condition;The control of heating drying operating condition;The control of freezing and refrigeration operating condition.The function of dehumidifier and dryer is combined by the present invention, not only has the function of drying and dehumidifier possessed by two class units, but also can eliminate two kinds of unit performance drawbacks of dehumidifier and dryer.There are three separate exchangers for present invention tool, it can be in the case where meeting constant temperature dehumidifier function, after constant temperature dehumidifier operating condition works to more than 38 degrees Celsius, pass through third heat exchanger, the heat of the excessively high generation of room temperature is dispersed into outdoor, guarantee that room temperature is constant, is maintained within the temperature range of unit can work.

Description

A kind of multi-state heat pump drier system and its control method
Technical field
The present invention relates to a kind of multi-state heat pump drier system and its control methods, belong to drying machine control technology neck Domain.
Background technique
Currently, dryer and dehumidifier have extensively in the industries such as agricultural byproducts processing, food industry, chemical industry, medicine Application.Dryer generally dries substance using the method that the conventional energy resources such as fire coal, fuel oil, electric power provide thermal energy, energy Consumption is big, drying cost is high, environmental pollution is serious.Using air source heat pump to carry out drying operation can constantly provide for dryer Stablize heat source, while having the characteristics that energy consumption is small, free from environmental pollution.
Dehumidifier working principle is the water-setting in air to be formed droplet discharge, while exporting dry air, reduces room Interior air humidity.But it is continued working under the relatively low environment of temperature, frosting situation occurs for the heat-exchange system of dehumidifier, at this time Compressor must stop working, and heating heating heat-exchange system can just work on after defrosting.During defrosting, dehumidifier without Method carries out dehumidifier work.
Using effect is unsatisfactory in winter for traditional dryer, because outdoor temperature is low, unit needs to defrost, most evil bad Under the conditions of applying working condition it is unstable.And in summer in use, outdoor temperature is excessively high, dryer one is directly subordinate to heating mode, because of room External heat exchanger is accelerated in summer evaporation rate, and evaporating temperature is excessively high to lead to return-air and excessive discharge temperature, be easy to cause system It is unstable.
Common dehumidifier is not to the system of outdoor discharge thermal energy simultaneously, when constant temperature dehumidifier operating condition continues to work until a timing Between, room temperature can be gradually increasing.Room temperature declines more than unit normal use temperature range, excessive discharge temperature, using effect, It is more serious to will cause unit cisco unity malfunction.
Summary of the invention
Purpose: in order to overcome the deficiencies in the prior art, the present invention provides a kind of multi-state heat pump drier system And its control method, the function of dehumidifier and dryer is combined, not only there is drying and dehumidifier possessed by two class units Function, and two kinds of unit performance drawbacks of dehumidifier and dryer can be eliminated.There are three separate exchangers, Ke Yi for present invention tool It,, will by third heat exchanger after constant temperature dehumidifier operating condition works to more than 38 degrees Celsius in the case where meeting constant temperature dehumidifier function The heat of the excessively high generation of room temperature is dispersed into outdoor, guarantees that room temperature is constant, is maintained within the temperature range of unit can work.
Technical solution: in order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of multi-state heat pump drier system, comprising: First Heat Exchanger, the second heat exchanger, third heat exchanger, described first changes Hot device one end is connected with the port B of four-way valve;Second heat exchanger one end is connected with second one-way valve conduction terminal, and second The check valve other end is connected in series with gas-liquid separator, compressor;Respectively with the port A of four-way valve, three get around regulations the compressor other end The port E of white valve is connected;The port of the third heat exchanger is connected with the port F of threeway defrosting valve;Threeway defrosting valve Port G is connected with the port D of four-way valve, and the port C of four-way valve is connected with the first check valve conduction terminal, and the first check valve is another One end is connected with the second one-way valve other end;The First Heat Exchanger other end is connected with fluid reservoir;The second heat exchanger other end It is connected by the first electric expansion valve with fluid reservoir;Third heat exchanger another port passes through electric expansion valve and fluid reservoir respectively It is connected;Indoors, third heat exchanger is arranged in outdoor for the First Heat Exchanger, the setting of the second heat exchanger.
Preferably, the First Heat Exchanger is provided with indoor fan.
Preferably, the third heat exchanger is provided with outdoor fan.
Preferably, there are two the heat exchanger of parallel branch, two heat exchange in parallel for the third heat exchanger setting Device one end is connected with the port F of threeway defrosting valve, the other end pass through respectively the second electric expansion valve, third electric expansion valve with Fluid reservoir is connected.
According to claim 1, the control method of any one of -4 systems, include the following steps:
The control of constant temperature dehumidifier operating condition:
Refrigerant forms the gas of high temperature and pressure from after compressor operating, and by four-way valve port A to port B, flow direction is indoor First Heat Exchanger after, flow to fluid reservoir, open the first electric expansion valve, refrigerant is from fluid reservoir through the first electric expansion valve After throttling, indoor second heat exchanger is flowed to, the cooling capacity for flowing through it is transmitted to indoor release by the blower of interior circulation, then passes through second Check valve flows to gas-liquid separator, then flows back into compressor;
The control of constant temperature dehumidifier reduction room temperature operating condition:
By reaching set temperature in constant temperature dehumidifier operating condition room, when room temperature is higher than the set temperature upper limit, the end of threeway defrosting valve Mouthful E be connected to port F, the third heat exchanger of part of refrigerant flow direction outdoor, to after outdoor heat dissipation, by electric expansion valve, Fluid reservoir is flowed to, the refrigerant in fluid reservoir flows to indoor second heat exchanger after the throttling of the first electric expansion valve, interior The cooling capacity for flowing through it is transmitted to indoor release by the blower of circulation, flows to gas-liquid separator by second one-way valve, then flow back into pressure Contracting machine;After room temperature decline, threeway defrosting valve is closed, and outdoor third heat exchanger stops working;
The control of heating drying operating condition:
Refrigerant forms the gas of high temperature and pressure from after the work of compressor, and passes through the port A to port B of four-way valve, flow direction Indoor First Heat Exchanger, and flow to fluid reservoir, refrigerant, to outdoor third heat exchanger, and pass through from after fluid reservoir reducing pressure by regulating flow The end F of triple valve is connected to the end G, and is connected to by four-way valve C-terminal with the end D, flows to gas-liquid separator, then flow back into compression Machine;
The control of heating drying defrosting operating condition:
In winter under environment, refrigerant forms the gas of high temperature and pressure from after the work of compressor, all the way the end E through triple valve Be connected with the end F with a pipeline heat exchanger of third heat exchanger parallel connection, then through fluid reservoir, by indoor second heat exchanger using logical It crosses second one-way valve and flows to gas-liquid separator, then flow back into compressor;After a pipeline heat exchanger completes defrosting in third heat exchanger, The heat exchanger of another way parallel connection, which repeats the above steps, completes defrosting;Meanwhile the gas of compressor high temperature high pressure, through four-way valve end A pipeline heat exchanger in mouth A to port B, indoor First Heat Exchanger, fluid reservoir and the third heat exchanger of completion defrosting, then through threeway The end F and the end G of valve, four-way valve port D to port C, the first check valve return to gas-liquid separator, flow back into compressor again;
The control of freezing and refrigeration operating condition:
Refrigerant forms the gas of high temperature and pressure from after the work of compressor, passes through the end E of triple valve and the end F flow direction outdoor the Three heat exchangers pass through expansion valve after completing heat exchange, flow to fluid reservoir, and refrigerant flows to indoor second heat exchanger from fluid reservoir, To after indoor released cold quantity, gas-liquid separator is flowed to by check valve, then flow back into compressor.
Preferably, third heat exchanger is when carrying out heat exchange work, opens wherein all the way or two-way is all turned on.
The utility model has the advantages that a kind of multi-state heat pump drier system provided by the invention and its control method, the present invention have Three kinds of operating conditions break through the previous only dehumidifier with single operating condition dryer and single operating condition.The present invention not only has tradition High-temperature hot-air dry operating condition, do not influenced when also there is the dry operating condition of medium temperature dehumidifier and freezing and refrigeration operating condition, and there is defrosting The advantages of unit works, while drying machine than single variety on the market or dehumidifier are with more fusion functions.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of present system;
Fig. 2 is the operation schematic diagram of constant temperature dehumidifier operating condition;
Fig. 3 is the operation schematic diagram that constant temperature dehumidifier reduces room temperature operating condition;
Fig. 4 is the operation schematic diagram of heating drying operating condition;
Fig. 5 is the operation schematic diagram of heating drying defrosting operating condition;
Fig. 6 is the operation schematic diagram of freezing and refrigeration operating condition.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
As shown in Figure 1, a kind of multi-state heat pump drier system, comprising: First Heat Exchanger 3, the second heat exchanger 6, third Heat exchanger 9, described 3 one end of First Heat Exchanger are connected with the port B of four-way valve 2;Described second heat exchanger, 6 one end is single with second It is connected to 14 conduction terminal of valve, 14 other end of second one-way valve is connected in series with gas-liquid separator 15, compressor 1;Compressor 1 is another End is connected with the port A of four-way valve 2, the port E of threeway defrosting valve 13 respectively;Two ports of the third heat exchanger 9 are simultaneously It is connected after connection with the port F of threeway defrosting valve 13;The port G of threeway defrosting valve 13 is connected with the port D of four-way valve 2, and four The port C of port valve 2 is connected with 12 conduction terminal of the first check valve, 12 other end of the first check valve and 14 other end of second one-way valve It is connected;3 other end of First Heat Exchanger is connected with fluid reservoir 4, and First Heat Exchanger 3 is provided with indoor fan 7;Second heat exchanger 6 other ends are connected by the first electric expansion valve 5 with fluid reservoir 4;Other two port of third heat exchanger 9 passes through respectively Two electric expansion valves 8, third electric expansion valve 11 are connected with fluid reservoir 4;The third heat exchanger 9 is provided with outdoor fan 10;Indoors, third heat exchanger 9 is arranged in outdoor for the First Heat Exchanger 3, the setting of the second heat exchanger 6.
A kind of multi-state heat pump drier system and its control method, include the following steps:
S1: the control method of constant temperature dehumidifier operating condition:
As shown in Fig. 2, refrigerant from after the work of compressor 1, forms the gas of high temperature and pressure, and pass through four-way valve port A to end Mouth B, then flows to indoor First Heat Exchanger 3, function of the First Heat Exchanger 3 as condenser at this time, the blower of interior circulation The heat for flowing through it is transmitted to indoor release, to be condensed, forms the liquid of medium temperature and medium pressure or the refrigeration of liquid vapour mixed state Agent, and fluid reservoir 4 is flowed to, the first electric expansion valve 5, section of the refrigerant from fluid reservoir 4 through the first electric expansion valve 5 are opened at this time After stream, function of second heat exchanger 6 as evaporator of indoor second heat exchanger 6 at this time is flowed to, the blower of interior circulation is stream It is transmitted to indoor release through its cooling capacity, to be evaporated, and forms the gaseous refrigerant of low-temp low-pressure.Pass through second one-way valve 14 flow to gas-liquid separator 15, then flow back into compressor 1, complete dehumidifier operating condition.
S2: the control method of constant temperature dehumidifier reduction room temperature operating condition:
As shown in figure 3, by reaching set temperature in constant temperature dehumidifier operating condition room, when room temperature is higher than the set temperature upper limit, threeway The port E of defrosting valve 13 is connected to port F, and the second electric expansion valve 8 is opened, and part of refrigerant directly passes through from compressor 1 The port E and port F of threeway defrosting valve 13 flow to outdoor third heat exchanger 9 wherein heat exchanger in parallel all the way, and (third is changed Two output ends in parallel of hot device 9, can open, or only open one of them simultaneously according to actual needs) to after outdoor heat dissipation, By the second electric expansion valve 8 (or third electric expansion valve 11, or the second electric expansion valve 8 and third electric expansion valve 11) fluid reservoir 4, is flowed to, the refrigerant in fluid reservoir 4 flows to indoor second and change after the throttling of the first electric expansion valve 5 The cooling capacity for flowing through it is transmitted to interior and released by function of second heat exchanger 6 as evaporator of hot device 6 at this time, the blower of interior circulation It puts, to be evaporated, and forms the gaseous refrigerant of low-temp low-pressure.Gas-liquid separator 15 is flowed to by second one-way valve 14, Compressor 1 is flowed back into again.Outdoor third heat exchanger 9 works, by taking away a part of heat, making Indoor Temperature to outdoor heat dissipation Degree reaches in unit operating temperature range, and that shuts down when effectively avoiding common dehumidifier room temperature raising more than operating temperature range asks Topic, reaches the job requirement of constant temperature dehumidifier.After room temperature decline, threeway defrosting valve 13 is closed, and outdoor third heat exchanger 9 stops work Make.
S3: the control method of heating drying operating condition:
As shown in figure 4, refrigerant from after the work of compressor 1, forms the gas of high temperature and pressure, and pass through the port A of four-way valve 2 To port B, indoor First Heat Exchanger 3 is flowed to, function of the First Heat Exchanger 3 as condenser at this time, the blower of interior circulation The heat for flowing through it is transmitted to interior, after the heat that displaced First Heat Exchanger 3 to interior, the refrigerant of First Heat Exchanger 3 is obtained It to condensation, forms the liquid of medium temperature and medium pressure or the refrigerant of mixed state and flows to fluid reservoir 4, electric expansion valve 8 is opened at this time, system For cryogen from after 4 reducing pressure by regulating flow of fluid reservoir to outdoor heat exchanger 9, function of the outdoor heat exchanger 9 as evaporator at this time is outdoor The cooling capacity for flowing through it to outdoor release, to be evaporated, and is formed the gaseous refrigerant of low-temp low-pressure, gaseous system by blower Cryogen is connected to by the end F of triple valve 13 with the end G, and is connected to by four-way valve C-terminal with the end D, and gas-liquid separator 15 is flowed to, then Flow back into compressor 1.Complete heating drying operating condition.
S4: the control method of heating drying defrosting operating condition:
As shown in figure 5, outdoor 9 frosting of third heat exchanger, heat transfer effect difference needs to defrost in winter under extremely cold environment, refrigerant is certainly After the work of compressor 1, the gas of high temperature and pressure is formed, the end E through triple valve 13 and the end F are connected with third heat exchanger 9 all the way It is logical, a pipeline heat exchanger in parallel in third heat exchanger 9 and the first coupled electric expansion valve 5 are opened, through fluid reservoir 4, The second heat exchanger of interior 6 for dropping low-power operation flows to gas-liquid separator 15 using by second one-way valve 14, then flows back into Compressor 1.After a pipeline heat exchanger completes defrosting in third heat exchanger 9, the heat exchanger of another way parallel connection has repeated the above steps At defrosting.Meanwhile the gas of compressor high temperature high pressure, through four-way valve port A to port B, indoor First Heat Exchanger 3, liquid storage A pipeline heat exchanger in tank 4 and the third heat exchanger 9 of completion defrosting, then the end F and the end G through triple valve 13, four-way valve port D is extremely Port C, the first check valve 12, returns to gas-liquid separator 15, so achievees the purpose that outdoor third heat exchanger 9 defrosts, while not Influence the indoor heating drying function of unit.
S5: the control method of freezing and refrigeration operating condition:
As shown in fig. 6, refrigerant from after the work of compressor 1, forms the gas of high temperature and pressure, pass through the end E of triple valve 13 and F Flow direction outdoor third heat exchanger 9 in end passes through the first electric expansion valve 8 and the second electric expansion valve 11 (as divided after completing heat exchange Not Kai Qi 9-1 or 9-2, then open its and correspond to electric expansion valve electric expansion valve 8 or 11), flow to fluid reservoir 4, refrigerant is from storing up Flow container 4 flows to indoor second heat exchanger 6 and flows to gas-liquid separator 15 by check valve 14, then flow back to after indoor released cold quantity To compressor 1, freezing and refrigeration operating condition is completed.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (6)

1. a kind of multi-state heat pump drier system, comprising: First Heat Exchanger, the second heat exchanger, third heat exchanger, feature exist In: described First Heat Exchanger one end is connected with the port B of four-way valve;Second heat exchanger one end is connected with second one-way valve End is connected, and the second one-way valve other end is connected in series with gas-liquid separator, compressor;The compressor other end respectively with four-way valve The port E of port A, threeway defrosting valve are connected;The port of the third heat exchanger is connected with the port F of threeway defrosting valve; The port G of threeway defrosting valve is connected with the port D of four-way valve, and the port C of four-way valve is connected with the first check valve conduction terminal, The first check valve other end is connected with the second one-way valve other end;The First Heat Exchanger other end is connected with fluid reservoir;Second The heat exchanger other end is connected by the first electric expansion valve with fluid reservoir;It is swollen that third heat exchanger another port passes through electronics respectively Swollen valve is connected with fluid reservoir;Indoors, third heat exchanger is arranged in outdoor for the First Heat Exchanger, the setting of the second heat exchanger.
2. a kind of multi-state heat pump drier system according to claim 1, it is characterised in that: the First Heat Exchanger is set It is equipped with indoor fan.
3. a kind of control method of multi-state heat pump drier system according to claim 1, it is characterised in that: described Three heat exchangers are provided with outdoor fan.
4. a kind of control method of multi-state heat pump drier system according to claim 1, it is characterised in that: described There are two the heat exchanger of parallel branch, the port F phases of two heat exchanger one end in parallel and threeway defrosting valve for the setting of three heat exchangers Connection, the other end passes through the second electric expansion valve respectively, third electric expansion valve is connected with fluid reservoir.
5. the control method of any one of -4 systems according to claim 1, characterized by the following steps:
The control of constant temperature dehumidifier operating condition:
Refrigerant forms the gas of high temperature and pressure from after compressor operating, and by four-way valve port A to port B, flow direction is indoor First Heat Exchanger after, flow to fluid reservoir, open the first electric expansion valve, refrigerant is from fluid reservoir through the first electric expansion valve After throttling, indoor second heat exchanger is flowed to, the cooling capacity for flowing through it is transmitted to indoor release by the blower of interior circulation, then passes through second Check valve flows to gas-liquid separator, then flows back into compressor;
The control of constant temperature dehumidifier reduction room temperature operating condition:
By reaching set temperature in constant temperature dehumidifier operating condition room, when room temperature is higher than the set temperature upper limit, the end of threeway defrosting valve Mouthful E be connected to port F, the third heat exchanger of part of refrigerant flow direction outdoor, to after outdoor heat dissipation, by electric expansion valve, Fluid reservoir is flowed to, the refrigerant in fluid reservoir flows to indoor second heat exchanger after the throttling of the first electric expansion valve, interior The cooling capacity for flowing through it is transmitted to indoor release by the blower of circulation, flows to gas-liquid separator by second one-way valve, then flow back into pressure Contracting machine;After room temperature decline, threeway defrosting valve is closed, and outdoor third heat exchanger stops working;
The control of heating drying operating condition:
Refrigerant forms the gas of high temperature and pressure from after the work of compressor, and passes through the port A to port B of four-way valve, flow direction Indoor First Heat Exchanger, and flow to fluid reservoir, refrigerant, to outdoor third heat exchanger, and pass through from after fluid reservoir reducing pressure by regulating flow The end F of triple valve is connected to the end G, and is connected to by four-way valve C-terminal with the end D, flows to gas-liquid separator, then flow back into compression Machine;
The control of heating drying defrosting operating condition:
In winter under environment, refrigerant forms the gas of high temperature and pressure from after the work of compressor, all the way the end E through triple valve Be connected with the end F with a pipeline heat exchanger of third heat exchanger parallel connection, then through fluid reservoir, by indoor second heat exchanger using logical It crosses second one-way valve and flows to gas-liquid separator, then flow back into compressor;After a pipeline heat exchanger completes defrosting in third heat exchanger, The heat exchanger of another way parallel connection, which repeats the above steps, completes defrosting;Meanwhile the gas of compressor high temperature high pressure, through four-way valve end A pipeline heat exchanger in mouth A to port B, indoor First Heat Exchanger, fluid reservoir and the third heat exchanger of completion defrosting, then through threeway The end F and the end G of valve, four-way valve port D to port C, the first check valve return to gas-liquid separator, flow back into compressor again;
The control of freezing and refrigeration operating condition:
Refrigerant forms the gas of high temperature and pressure from after the work of compressor, passes through the end E of triple valve and the end F flow direction outdoor the Three heat exchangers pass through expansion valve after completing heat exchange, flow to fluid reservoir, and refrigerant flows to indoor second heat exchanger from fluid reservoir, To after indoor released cold quantity, gas-liquid separator is flowed to by check valve, then flow back into compressor.
6. control method according to claim 5, it is characterised in that: third heat exchanger is opened when carrying out heat exchange work Wherein all the way or two-way is all turned on.
CN201910744883.XA 2019-08-13 2019-08-13 A kind of multi-state heat pump drier system and its control method Pending CN110455070A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103307804A (en) * 2013-06-14 2013-09-18 上海海立睿能环境技术有限公司 Defrosting system for heat pump
CN104251580A (en) * 2013-06-26 2014-12-31 珠海格力电器股份有限公司 Air conditioning system
CN205048940U (en) * 2015-09-21 2016-02-24 刘晓明 Drying and dehumidification unit
CN205641301U (en) * 2016-05-10 2016-10-12 广东美的暖通设备有限公司 Heat pump type air conditioning system
CN106996643A (en) * 2017-05-16 2017-08-01 广东爱尼智能家电制造有限公司 A kind of multifunctional heat pump water heating machine group
CN207894207U (en) * 2017-12-30 2018-09-21 山东格瑞德集团有限公司 A kind of aquatic products drying specific AC equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103307804A (en) * 2013-06-14 2013-09-18 上海海立睿能环境技术有限公司 Defrosting system for heat pump
CN104251580A (en) * 2013-06-26 2014-12-31 珠海格力电器股份有限公司 Air conditioning system
CN205048940U (en) * 2015-09-21 2016-02-24 刘晓明 Drying and dehumidification unit
CN205641301U (en) * 2016-05-10 2016-10-12 广东美的暖通设备有限公司 Heat pump type air conditioning system
CN106996643A (en) * 2017-05-16 2017-08-01 广东爱尼智能家电制造有限公司 A kind of multifunctional heat pump water heating machine group
CN207894207U (en) * 2017-12-30 2018-09-21 山东格瑞德集团有限公司 A kind of aquatic products drying specific AC equipment

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Application publication date: 20191115

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