CN105841378B - Dehumidifier, dehumidifying machine controller and dehumidifier control method - Google Patents
Dehumidifier, dehumidifying machine controller and dehumidifier control method Download PDFInfo
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- CN105841378B CN105841378B CN201610178446.2A CN201610178446A CN105841378B CN 105841378 B CN105841378 B CN 105841378B CN 201610178446 A CN201610178446 A CN 201610178446A CN 105841378 B CN105841378 B CN 105841378B
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- solenoid valve
- dehumidifier
- evaporator
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- condenser
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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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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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
- 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
- F25B2500/00—Problems to be solved
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a kind of dehumidifier, dehumidifying machine controller and dehumidifier control methods, are related to dehumidifier field, for solving the problems, such as conventional freezing type dehumidifier defrost time length.Dehumidifier includes：Compressor, liquid storage device, evaporator, condenser, first throttling device, second throttling device, third throttling set, the first solenoid valve, second solenoid valve, third solenoid valve, fan.When being dehumidified, solenoid valve access or open circuit, make the refrigerant of the gas outlet from compressor followed by condenser and first throttling device after, flow through evaporator, wherein, evaporator is used to carry out refrigerated dehumidification to room air, and condenser is for heating the room air through refrigerated dehumidification；When carrying out defrost, solenoid valve access or open circuit make the first part of refrigerant flow through evaporator.The embodiment of the present invention is applied to dehumidifier.
Description
Technical field
The present invention relates to a kind of dehumidifier field more particularly to dehumidifier, dehumidifying machine controller and dehumidifier control methods.
Background technology
For freezing type dehumidifier conventional at present when environment temperature is relatively low, evaporator will produce frosting, therefore this remove
Wet machine generally all carries automatic defrosting function, and defrost mode difference decides different defrost efficiencies, affects dehumidifying indirectly
The effect on moisture extraction of machine.The defrosting method that freezing type dehumidifier conventional at present generally uses for：Compressor is stopped, and wind turbine is held
Reforwarding row blows to evaporator surface using wind turbine and makes the frost heat convection of air and evaporator surface and melts frost.But
This mode defrost time is long, and indoor environment temperature is lower, longer the time required to defrost, influences effect on moisture extraction；In addition, by
Compressor is out of service when defrost, and the frequent start-stop of compressor also has a negative impact to the compressor service life.
Invention content
A kind of dehumidifier of the embodiment of the present invention offer, dehumidifying machine controller and dehumidifier control method, for solving often
The problem of the freezing type dehumidifier defrost time length of rule.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
In a first aspect, a kind of dehumidifier is provided, including：Compressor, liquid storage device, evaporator, condenser, first throttle dress
It sets, second throttling device, third throttling set, the first solenoid valve, second solenoid valve, third solenoid valve, fan, wherein described
The gas outlet of compressor connects the first end of the condenser, and the gas outlet of the compressor is also connected with first solenoid valve
First end, the second end of the condenser connect the first end of the first throttling device, and the second of the first throttling device
End connects the second end of first solenoid valve, and the second end of first solenoid valve connects the first end of the evaporator, institute
The second end for stating the first solenoid valve is also connected with the first end of the third throttling set, and the second end of the third throttling set connects
The first end of the third solenoid valve is connect, the second end of the evaporator connects the second end of the third solenoid valve, the steaming
The second end of hair device is also connected with the first end of the second throttling device, and the first end of the second throttling device is also connected with described
The first end of second solenoid valve, the second end of the second throttling device connect the second end of the second solenoid valve, and described
The second end of two throttling sets is also connected with the first end of the liquid storage device, and the second end of the liquid storage device connects the compressor
Air entry, the evaporator is opposite with the condenser and the windward side of the evaporator and the windward side of the condenser are flat
Row,
When being dehumidified, the solenoid valve access or open circuit, make the refrigerant from the gas outlet of the compressor according to
It is secondary flow through the condenser and the first throttling device after, flow through the evaporator, wherein the evaporator be used for room
Interior air carries out refrigerated dehumidification, and the condenser is for heating the room air through refrigerated dehumidification；
When carrying out defrost, the solenoid valve access or open circuit make the first part of the refrigerant flow through the evaporation
Device.
Second aspect provides a kind of dehumidifying machine controller, is applied to the dehumidifier described in first aspect, the dehumidifier
Controller includes the first control unit, is used for：
When being dehumidified, solenoid valve access or the open circuit of the dehumidifier are controlled, the compression from the dehumidifier is made
After the refrigerant of machine gas outlet is followed by the condenser and first throttling device of the dehumidifier, the dehumidifier is flowed through
Evaporator, wherein the evaporator is used to carry out refrigerated dehumidification to room air, and the condenser is used for through refrigerated dehumidification
Room air is heated；
When carrying out defrost, solenoid valve access or the open circuit of the dehumidifier are controlled, the first part of the refrigerant is made
Flow through the evaporator.
The third aspect provides a kind of dehumidifier control method, is applied to the dehumidifier described in first aspect, the dehumidifying
Machine control method includes：
When being dehumidified, solenoid valve access or the open circuit of the dehumidifier are controlled, the compression from the dehumidifier is made
After the refrigerant of machine gas outlet is followed by the condenser and first throttling device of the dehumidifier, the dehumidifier is flowed through
Evaporator, wherein the evaporator is used to carry out refrigerated dehumidification to room air, and the condenser is used for through refrigerated dehumidification
Room air is heated；
When carrying out defrost, solenoid valve access or the open circuit of the dehumidifier are controlled, the first part of the refrigerant is made
Flow through the evaporator.
Dehumidifier provided by the invention, dehumidifying machine controller and the dehumidifier control method that the embodiment of the present invention provides,
When being dehumidified, by controlling solenoid valve access or the open circuit of dehumidifier, make the refrigerant from compressor outlet successively
After flowing through condenser and first throttling device, evaporator is flowed through, wherein evaporator is used to carry out refrigeration to room air to remove
Wet, condenser is for heating the room air through refrigerated dehumidification；When carrying out defrost, by above-mentioned solenoid valve access or
Open circuit makes the first part of the refrigerant from compressor outlet flow through evaporator.Due to what is flowed out from compressor outlet
Refrigerant is high temperature and high pressure gas, into after evaporator, carries out defrost to evaporator by heat exchange, may be implemented rapid
Frost.Solves the problems, such as conventional freezing type dehumidifier defrost time length.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram for the dehumidifier that the embodiment of the present invention provides；
Fig. 2 is the refrigerant flow direction schematic diagram when dehumidifier that the embodiment of the present invention provides is dehumidified；
Fig. 3 is the refrigerant flow direction schematic diagram when dehumidifier that the embodiment of the present invention provides carries out defrost；
Fig. 4 is the structural schematic diagram for the dehumidifying machine controller that the embodiment of the present invention provides；
Fig. 5 is the flow diagram for the dehumidifier control method that the embodiment of the present invention provides.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Dehumidifier provided by the invention, when carrying out defrost to the evaporator of dehumidifier, by control solenoid valve access or
Open circuit so that the refrigerant of the high temperature and high pressure gas form of the compressor outlet from dehumidifier, which flows into evaporator, to be come to evaporation
Device carries out defrost.
Embodiment 1,
Shown in referring to Fig.1, the present invention provides a kind of dehumidifiers, including compressor 101, liquid storage device 102, evaporator
103, condenser 104, first throttling device 105, second throttling device 106, third throttling set 107, the first solenoid valve 108,
Second solenoid valve 109, third solenoid valve 110, fan 111, wherein the first of the gas outlet connection condenser 104 of compressor 101
End, the gas outlet of compressor 101 are also connected with the first end of the first solenoid valve 108, and the second end of condenser 104 connects first throttle
The first end of device 105, the second end of first throttling device 105 connect the second end of the first solenoid valve 108, the first solenoid valve
The first end of 108 second end connection evaporator 103, the second end of the first solenoid valve 108 are also connected with third throttling set 107
First end, the first end of the second end connection third solenoid valve 110 of third throttling set 107, the second end connection of evaporator 103
The second end of third solenoid valve 110, the second end of evaporator 103 are also connected with the first end of second throttling device 106, the second throttling
The first end of device 106 is also connected with the first end of second solenoid valve 109, the second electricity of second end connection of second throttling device 106
The second end of magnet valve 109, the second end of second throttling device 106 are also connected with the first end of liquid storage device 102, and the of liquid storage device 102
The air entry of two end connect compressors 101, evaporator 103 and condenser 104 be opposite and windward side and the condensation of evaporator 103
The windward side of device 104 is parallel, and condenser 104 is put down relatively and where the windward side of condenser 104 and fan 111 with fan 111
Face is parallel.
When being dehumidified, by above-mentioned solenoid valve access or open circuit, make the refrigerant from 101 gas outlet of compressor according to
It is secondary flow through condenser 104 and first throttling device 105 after, flow through evaporator 103, wherein evaporator 103 be used for Interior Space
Gas carries out refrigerated dehumidification, and condenser 104 is for heating the room air through refrigerated dehumidification, to compensate in refrigerated dehumidification
Indoor air temperature caused by the process declines.
When carrying out defrost, by above-mentioned solenoid valve access or open circuit, make the refrigerant from 101 gas outlet of compressor
First part flows through evaporator 103.Since the refrigerant flowed out from 101 gas outlet of compressor is high temperature and high pressure gas, into steaming
After sending out device 103, defrost is carried out to evaporator 103 by heat exchange, quick defrost may be implemented.
Dehumidifier provided by the invention, including compressor, liquid storage device, evaporator, condenser, first throttling device, second
Throttling set, third throttling set, the first solenoid valve, second solenoid valve, third solenoid valve, fan pass through when being dehumidified
Above-mentioned solenoid valve access or open circuit, make the refrigerant from compressor outlet followed by condenser and first throttling device it
Afterwards, evaporator is flowed through, wherein evaporator is used to carry out refrigerated dehumidification to room air, and condenser is used for through refrigerated dehumidification
Room air is heated；When carrying out defrost, by above-mentioned solenoid valve access or open circuit, make the system from compressor outlet
The first part of cryogen flows through evaporator.Since the refrigerant flowed out from compressor outlet is high temperature and high pressure gas, into steaming
After sending out device, defrost is carried out to evaporator by heat exchange, quick defrost may be implemented.Solves conventional freezing type dehumidifier
The problem of white time length.
Specifically, when being dehumidified, with reference to shown in Fig. 2, fan 111 and compressor 101 are run, the first solenoid valve
108 and the open circuit of third solenoid valve 110,109 access of second solenoid valve, the high temperature and pressure of 101 gas outlet of compressor outflow be vented into
Enter condenser 104, first throttling device 105 is flowed through after condenser 104 condenses release heat and become liquid, then liquid
Refrigerant flows into evaporator 103, and the evaporative cooling in evaporator 103 carries out refrigeration to room air by evaporator 103 and removes
Wet, refrigerant becomes gas after the outflow of evaporator 103, flows into liquid storage device 102 by second solenoid valve 109, then flows back to pressure
Contracting machine 101.
Optionally, when carrying out defrost operation, by above-mentioned solenoid valve access or open circuit, make to come from 101 outlet of compressor
Mouthful the second part of refrigerant flow through third throttling set 107, then with the first part of the refrigerant of outflow evaporator 103
It is mixed, the refrigerant with certain mass dryness fraction is formed, without being entirely liquid, when the refrigerant with certain mass dryness fraction passes back into
After the air entry of compressor 101,101 liquid hammer of compressor can be effectively prevent.
Optionally, when carrying out defrost operation, by above-mentioned solenoid valve access or open circuit, mixed refrigerant is made to flow through
Second throttling device 106, second throttling device 106 can improve the compression ratio of compressor 101, increase the operation work(of compressor
Rate improves delivery temperature and pressure, to improve defrost speed.
Specifically, when carrying out defrost operation, with reference to shown in Fig. 3, compressor 101 remains operational, and fan 111 stops fortune
Row, 110 access of the first solenoid valve 108 and third solenoid valve, 109 open circuit of second solenoid valve, the height of 101 gas outlet of compressor outflow
Warm high pressure gas is most of, and directly through the first solenoid valve 108, only small part flows through condenser 104 and first throttling device 105,
The mixed refrigerant of this two parts is still high temperature and high pressure gas, and then the first part of mixed refrigerant flows into evaporator
103, the refrigerant due to entering evaporator 103 is high temperature and high pressure gas, the heat transfer temperature difference with the frost layer on 103 surface of evaporator
Greatly, can be to 103 quick defrost of evaporator by heat exchange, the refrigerant flowed out from evaporator 103 is due in evaporator 103
Condensation heat release becomes liquid；The second part of refrigerant is flowed out through third throttling set 107 and third solenoid valve 110, is made at this time
The second part of cryogen is still gas, then again with the first part of the refrigerant of the liquid form flowed out from evaporator 103
Mixing forms the refrigerant with certain mass dryness fraction, and liquid storage device 102 is then flowed into after the throttling of second throttling device 106 and is flowed back to
The air entry of compressor 101.
Optionally, first throttling device 105, second throttling device 106 and third throttling set 107 can be capillary or
Other throttling sets.
Dehumidifier provided by the invention, including compressor, liquid storage device, evaporator, condenser, first throttling device, second
Throttling set, third throttling set, the first solenoid valve, second solenoid valve, third solenoid valve, fan, when being dehumidified, first
Solenoid valve and third solenoid valve open circuit, the high temperature and pressure exhaust of second solenoid valve access, compressor outlet outflow enter condensation
Device flows through first throttling device after condenser condenses release heat and becomes liquid, and then the refrigerant of liquid flows into evaporation
Device, the evaporative cooling in evaporator carry out refrigerated dehumidification by evaporator to room air, when carrying out defrost operation, compression
Machine remains operational, and fan is out of service, the first solenoid valve and third solenoid valve access, second solenoid valve open circuit, compressor outlet
The high temperature and pressure exhaust of mouth outflow is most of directly through the first solenoid valve, and only small part flows through condenser and first throttle dress
It sets, the mixed refrigerant of this two parts is still high temperature and high pressure gas, and then the first part of mixed refrigerant, which flows into, steams
Device is sent out, the refrigerant due to entering evaporator is high temperature and high pressure gas, big with the heat transfer temperature difference of the frost layer of evaporator surface, is passed through
Heat exchange can be to the quick defrost of evaporator.Since the refrigerant flowed out from compressor outlet is high temperature and high pressure gas, enter
After evaporator, defrost is carried out to evaporator by heat exchange, quick defrost may be implemented.Solves conventional freezing type dehumidifier
The problem of defrost time length.In addition, when carrying out defrost operation, compressor remains operational, and prevents high frequent start and stop reduction
The compressor service life.
Embodiment 2,
The embodiment provides a kind of dehumidifying machine controllers, are applied to above-mentioned dehumidifier, with reference to shown in Fig. 4,
Including：
First control unit 401, the solenoid valve access for when being dehumidified, controlling dehumidifier or open circuit, make to come from
After the refrigerant of the compressor outlet of dehumidifier is followed by the condenser and first throttling device of dehumidifier, dehumidifying is flowed through
The evaporator of machine, wherein evaporator is used to carry out refrigerated dehumidification to room air, and condenser is used for the interior through refrigerated dehumidification
Air is heated.
First control unit 401 is additionally operable to control solenoid valve access or the open circuit of dehumidifier when carrying out defrost, makes system
The first part of cryogen flows through evaporator.
Optionally, with reference to shown in Fig. 4, dehumidifying machine controller further includes：
Second control unit 402, the fan and compressor for when being dehumidified, controlling dehumidifier are run.
Second control unit 402 is additionally operable to when carrying out defrost, and control fan is out of service, and control compressor keeps fortune
Row.
Optionally, the first control unit 401 is additionally operable to：When carrying out defrost, solenoid valve access or open circuit are controlled, refrigeration is made
The second part of agent flows through third throttling set, is then mixed with the first part of the refrigerant of outflow evaporator.
Optionally, the first control unit 401 is additionally operable to：When carrying out defrost, solenoid valve access or open circuit are controlled, mixing is made
Refrigerant afterwards flows through second throttling device.
Optionally, the first control unit 401 is specifically used for：When being dehumidified, the first solenoid valve of dehumidifier and the are controlled
Three solenoid valve accesses control the second solenoid valve open circuit of dehumidifier；When carrying out defrost, the first solenoid valve and third electromagnetism are controlled
Valve open circuit, controls second solenoid valve access.
Dehumidifying machine controller provided by the invention, including the first control unit, for when being dehumidified, being removed by control
The solenoid valve access of wet machine or open circuit make the refrigerant from compressor outlet followed by condenser and first throttling device
Later, evaporator is flowed through, wherein evaporator is used to carry out refrigerated dehumidification to room air, and condenser is used for through refrigerated dehumidification
Room air heated；When carrying out defrost, by above-mentioned solenoid valve access or open circuit, make from compressor outlet
The first part of refrigerant flows through evaporator.Since the refrigerant flowed out from compressor outlet is high temperature and high pressure gas, enter
After evaporator, defrost is carried out to evaporator by heat exchange, quick defrost may be implemented.Solves conventional freezing type dehumidifier
The problem of defrost time length.
Embodiment 3,
The embodiment provides a kind of dehumidifier control methods, are applied to above-mentioned dehumidifier, with reference to institute in Fig. 5
Show, including：
S501, when being dehumidified, control solenoid valve access or the open circuit of dehumidifier, the compressor from dehumidifier made to go out
After the refrigerant of gas port is followed by the condenser and first throttling device of dehumidifier, the evaporator of dehumidifier is flowed through, wherein
Evaporator is used to carry out refrigerated dehumidification to room air, and condenser is for heating the room air through refrigerated dehumidification；
S502, when carrying out defrost, control solenoid valve access or the open circuit of dehumidifier, the first part of refrigerant made to flow through
Evaporator.
Optionally, with reference to shown in Fig. 5, dehumidifier control method further includes：
S503, when being dehumidified, control dehumidifier fan and compressor operation；
S504, when carrying out defrost, the fan for controlling dehumidifier is out of service, control dehumidifier compressor keep fortune
Row.
Optionally, with reference to shown in Fig. 5, dehumidifier control method further includes：
S505, when carrying out defrost, control solenoid valve access or open circuit, the second part of refrigerant made to flow through third throttling
Then device is mixed with the first part of the refrigerant of outflow evaporator.
Optionally, with reference to shown in Fig. 5, dehumidifier control method further includes：
S506, when carrying out defrost, control solenoid valve access or open circuit, mixed refrigerant made to flow through the second throttling dress
It sets.
Optionally, the solenoid valve access or open circuit for controlling dehumidifier specifically include：
When being dehumidified, the first solenoid valve of dehumidifier and third solenoid valve access are controlled, controls the second electricity of dehumidifier
Magnet valve open circuit；
When carrying out defrost, the first solenoid valve and third solenoid valve open circuit are controlled, second solenoid valve access is controlled.
Dehumidifier control method provided by the invention, when being dehumidified, by control dehumidifier solenoid valve access or
Open circuit, make the refrigerant from compressor outlet followed by condenser and first throttling device after, flow through evaporator,
In, evaporator is used to carry out refrigerated dehumidification to room air, and condenser is for heating the room air through refrigerated dehumidification；
When carrying out defrost, by above-mentioned solenoid valve access or open circuit, the first part of the refrigerant from compressor outlet is made to flow
Through evaporator.Since the refrigerant flowed out from compressor outlet is that high temperature and high pressure gas passes through heat exchange into after evaporator
Defrost is carried out to evaporator, quick defrost may be implemented.Solves the problems, such as conventional freezing type dehumidifier defrost time length.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (13)
1. a kind of dehumidifier, which is characterized in that including compressor, liquid storage device, evaporator, condenser, first throttling device, second
Throttling set, third throttling set, the first solenoid valve, second solenoid valve, third solenoid valve, wherein the outlet of the compressor
Mouth connects the first end of the condenser, and the gas outlet of the compressor is also connected with the first end of first solenoid valve, described
The second end of condenser connects the first end of the first throttling device, the second end connection of the first throttling device described the
The second end of the second end of one solenoid valve, first solenoid valve connects the first end of the evaporator, first solenoid valve
Second end be also connected with the first end of the third throttling set, the second end of the third throttling set connects the third electricity
The first end of magnet valve, the second end of the evaporator connect the second end of the third solenoid valve, the second end of the evaporator
It is also connected with the first end of the second throttling device, the first end of the second throttling device is also connected with the second solenoid valve
First end, the second end of the second throttling device connect the second end of the second solenoid valve, the second throttling device
Second end is also connected with the first end of the liquid storage device, and the second end of the liquid storage device connects the air entry of the compressor, described
Evaporator and the condenser be opposite and the windward side of the evaporator is parallel with the windward side of the condenser,
When being dehumidified, first solenoid valve and third solenoid valve open circuit, the second solenoid valve access make to come from
After the refrigerant of the gas outlet of the compressor is followed by the condenser and the first throttling device, the steaming is flowed through
Send out device, wherein the evaporator is used to carry out refrigerated dehumidification to room air, and the condenser is used for the room through refrigerated dehumidification
Interior air is heated；
When carrying out defrost, first solenoid valve and the third solenoid valve access, the second solenoid valve open circuit make described
The first part of refrigerant flows through the evaporator.
2. dehumidifier according to claim 1, which is characterized in that the dehumidifier further includes fan, wherein the condensation
Device and the fan be opposite and the windward side of the condenser is parallel with fan place plane,
When being dehumidified, the fan and the compressor operating；
When carrying out defrost, the fan is out of service, and the compressor remains operational.
3. dehumidifier according to claim 1, which is characterized in that further include：
When carrying out defrost, first solenoid valve and the third solenoid valve access, the second solenoid valve open circuit make described
The second part of refrigerant flows through the third throttling set, then with first of the refrigerant for flowing out the evaporator
Divide and is mixed.
4. dehumidifier according to claim 3, which is characterized in that further include：
When carrying out defrost, first solenoid valve and the third solenoid valve access, the second solenoid valve open circuit make mixing
Refrigerant afterwards flows through second throttling device.
5. dehumidifier according to claim 1, which is characterized in that the first throttling device, the second throttling device
It is capillary with the third throttling set.
6. a kind of dehumidifying machine controller is applied to the dehumidifier as described in any one of claim 1-5, which is characterized in that institute
It includes the first control unit to state dehumidifying machine controller, is used for：
When being dehumidified, first solenoid valve and third solenoid valve open circuit are controlled, the second solenoid valve access makes
The refrigerant of compressor outlet from the dehumidifier followed by the dehumidifier condenser and first throttling device
Later, the evaporator of the dehumidifier is flowed through, wherein the evaporator is used to carry out refrigerated dehumidification to room air, described cold
Condenser is for heating the room air through refrigerated dehumidification；
When carrying out defrost, first solenoid valve and the third solenoid valve access are controlled, the second solenoid valve open circuit makes
The first part of the refrigerant flows through the evaporator.
7. dehumidifying machine controller according to claim 6, which is characterized in that the dehumidifying machine controller further includes the second control
Unit processed, is used for：
When being dehumidified, the fan and compressor operation of the dehumidifier is controlled；
When carrying out defrost, it is out of service to control the fan, controls the compressor and remains operational.
8. dehumidifying machine controller according to claim 6, which is characterized in that first control unit is additionally operable to：
When carrying out defrost, first solenoid valve and the third solenoid valve access are controlled, the second solenoid valve open circuit makes
The second part of the refrigerant flows through the third throttling set, then with the of the refrigerant that flows out the evaporator
A part is mixed.
9. dehumidifying machine controller according to claim 8, which is characterized in that first control unit is additionally operable to：
When carrying out defrost, first solenoid valve and the third solenoid valve access are controlled, the second solenoid valve open circuit makes
Mixed refrigerant flows through second throttling device.
10. a kind of dehumidifier control method is applied to the dehumidifier as described in any one of claim 1-5, which is characterized in that
The dehumidifier control method includes：
When being dehumidified, first solenoid valve and third solenoid valve open circuit are controlled, the second solenoid valve access makes
The refrigerant of compressor outlet from the dehumidifier followed by the dehumidifier condenser and first throttling device
Later, the evaporator of the dehumidifier is flowed through, wherein the evaporator is used to carry out refrigerated dehumidification to room air, described cold
Condenser is for heating the room air through refrigerated dehumidification；
When carrying out defrost, first solenoid valve and the third solenoid valve access are controlled, the second solenoid valve open circuit makes
The first part of the refrigerant flows through the evaporator.
11. dehumidifier control method according to claim 10, which is characterized in that the dehumidifier control method is also wrapped
It includes：
When being dehumidified, the fan and compressor operation of the dehumidifier is controlled；
When carrying out defrost, it is out of service to control the fan, controls the compressor and remains operational.
12. dehumidifier control method according to claim 10, which is characterized in that the dehumidifier control method is also wrapped
It includes：
When carrying out defrost, first solenoid valve and the third solenoid valve access are controlled, the second solenoid valve open circuit makes
The second part of the refrigerant flows through the third throttling set, then with the of the refrigerant that flows out the evaporator
A part is mixed.
13. dehumidifier control method according to claim 10, which is characterized in that the dehumidifier control method is also wrapped
It includes：
When carrying out defrost, first solenoid valve and the third solenoid valve access are controlled, the second solenoid valve open circuit makes
Mixed refrigerant flows through second throttling device.
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