CN108800668A - A kind of the cooling heat exchange device and its control method of energy saving dehumidifying - Google Patents
A kind of the cooling heat exchange device and its control method of energy saving dehumidifying Download PDFInfo
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- CN108800668A CN108800668A CN201810915360.2A CN201810915360A CN108800668A CN 108800668 A CN108800668 A CN 108800668A CN 201810915360 A CN201810915360 A CN 201810915360A CN 108800668 A CN108800668 A CN 108800668A
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- heat exchanger
- air
- supercooling
- evaporator
- air duct
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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
- F25B39/00—Evaporators; Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
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- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of cooling heat exchange device of energy saving dehumidifying and its control methods,The cooling heat exchange device includes at least a coolant loop and air duct,The coolant loop includes sequentially connected compressor,Condenser,Heat exchanger again is subcooled,Throttling set and evaporator,Heat exchanger is located in the air duct again for the evaporator and the supercooling,The evaporator is located at the air duct close to the position of air inlet,Heat exchanger is located at the air duct close to the position of air outlet again for the supercooling,The cooling heat exchange device further includes heat pipe circuit,The heat pipe circuit is located in the air duct,The heat pipe circuit includes precool heat exchanger device and heat exchanger again,In air duct of the precool heat exchanger device between air inlet and the evaporator,The heat exchanger again is located in the evaporator and the air duct being subcooled between heat exchanger again.Using the present invention, have the advantages that energy-saving consumption-reducing, system are succinct, pressure-drop in pipeline is small.
Description
Technical field
The present invention relates to Refrigeration & Air-Conditioning equipment technical field more particularly to a kind of cooling heat exchange devices of energy saving dehumidifying.
Background technology
Cooling heat exchange device with dehumidification function is widely used in electronics, lathe, weaving, medicine etc. to humiture requirement
Higher industry, wherein most of cooling heat exchange device dehumidifying uses dehumidification by condensation method, and air themperature is exactly cooled to dew point
Hereinafter, the condensate moisture in air is come out, absolute humidity is reduced, air is in saturation state at this time, need to be carried out again to air
Heating reduces relative humidity.
In this condensation process, when general air has just enter into air treatment system, temperature is relatively high, needs first to be pre-chilled to and connects
Nearly dew-point temperature, further cools down, and the air themperature after cooling is relatively low, and the absolute moisture content of air is not high at this time, still
Relative humidity is very high (saturation state), horizontal in order to obtain suitable humiture, and needs to heat air, and air is made absolutely to contain
In the case that moisture is constant, relative humidity is substantially reduced, and the above-mentioned precooling of conventional refrigerant heat-exchanger rig and again thermal process are required to
The a large amount of external energy of consumption, economy is poor, also not environmentally friendly enough.
And for most of cooling heat exchange device, for condenser generally directly to function of environment heat emission, condensation heat becomes waste heat, is
Reduce energy consumption, some cooling heat exchange devices using this partial condensation heat come to after dehumidifying air carry out reheating, such as application No. is
The Chinese patent of CN101865497A discloses a kind of high-accuracy energy-saving constant-temperature constant-moisture air conditioner, by multiple and different heat exchange areas
Condenser be mounted on evaporator after air duct in, using compressed high-temperature gas condensation release heat air, from
And heat energy again is saved, still, since compressor is normally at outdoor, with a distance from the air treatment section equipped with reheater condenser
Farther out, the gas of compressor need to be transported to reheater condenser from compressor, cause pressure-drop in pipeline big, and system complexity rises.
Invention content
Technical problem to be solved by the present invention lies in provide a kind of the cooling heat exchange device and its controlling party of energy saving dehumidifying
Method heats air using the condensed high-temp liquid of refrigerant, while pressure-drop in pipeline is small, and system is succinct.
In order to solve the above technical problem, the present invention provides a kind of cooling heat exchange devices of energy saving dehumidifying, including at least
One coolant loop and air duct, wherein the coolant loop include sequentially connected compressor, condenser, supercooling again heat exchanger,
Heat exchanger is located in the air duct again for throttling set and evaporator, the evaporator and the supercooling, the evaporator
Positioned at the air duct close to the position of air inlet, heat exchanger is located at the air duct close to the position of air outlet again for the supercooling,
The cooling heat exchange device further includes heat pipe circuit, and the heat pipe circuit is located in the air duct, and the heat pipe circuit includes pre-
Cold heat exchanger and again heat exchanger, in air duct of the precool heat exchanger device between air inlet and the evaporator, it is described again
Heat exchanger is located in the evaporator and the air duct being subcooled between heat exchanger again.
Further, the heat pipe circuit is U-shaped, and two straight flanges of the U-shaped heat pipe circuit are by the precool heat exchanger device
It constitutes with reheating heat exchanger, is connected with liquid pipe by tracheae between the precool heat exchanger device and the heat exchanger again.
Optionally, the heat pipe circuit is L-type, two straight flanges of the L-type heat pipe circuit by the precool heat exchanger device and
Reheating heat exchanger is constituted, and is connected with liquid pipe by tracheae between the precool heat exchanger device and the heat exchanger again.
Optionally, the heat pipe circuit is I types, and the first half of the I types heat pipe circuit is the heat exchanger again, lower half
Portion is the precool heat exchanger device, is connected with liquid pipe by tracheae between the precool heat exchanger device and the heat exchanger again.
Further, the coolant loop includes the condenser (1) of multiple parallel connections, at least one condenser (1)
Positioned at the heat exchanger that is subcooled again in the air duct of air outlet side.
Further, including multiple coolant loops, the supercooling reheating heat exchanger in multiple coolant loops is in parallel
Set on evaporator parallel connection of the air duct in the position of air outlet, multiple coolant loops be set to the air duct close into
The position in air port.
Optionally, heat exchanger and the evaporator are respectively equipped with multipair inlet tube and outlet again for the supercooling, pass through
The multipair inlet tube and outlet of heat exchanger and the evaporator form a plurality of coolant loop again for the supercooling.
Further, further include surface cooler, the surface cooler is located at the air duct between heat exchanger and air inlet again
In.
Further, the coolant loop further includes supercooling reheating flow regulator, the supercooling reheating flow-rate adjustment
Device is used to adjust into the refrigerant flow that heat exchanger is subcooled again.
Further, the supercooling reheating flow regulator includes an at least flow control valve, the flow control valve
The condenser and the supercooling are connected to again between heat exchanger, and/or is parallel to the import of supercooling heat exchanger again
Between pipe and outlet.
Second aspect of the present invention provides a kind of control method of the cooling heat exchange device of energy saving dehumidifying, the cooling heat exchange
The rate-determining steps of device are：
(1) air outlet temperature monitored according to temperature monitoring is compared with setting target temperature, and executes next step
Suddenly；
(2) when leaving air temp is less than setting target temperature, controller control increases the system by heat exchanger is subcooled again
Cryogen flow, to increase leaving air temp；
(3) when leaving air temp is higher than setting target temperature, controller control reduces the system by heat exchanger is subcooled again
Cryogen flow, to reduce leaving air temp.
Implement the embodiment of the present invention, has the advantages that：
By the way that heat pipe circuit, precool heat exchanger device elder generation cool-down dehumidification are arranged in air duct, reheating heat exchanger reheats cooling and removes
Air after wet is driven with reaching certain leaving air temp, precool heat exchanger device and reheating heat exchanger using the temperature difference, without consuming volume
Outer energy；
By the way that supercooling is arranged in air duct, outlet air is still not achieved in heat exchanger, the air themperature after heat exchanger again again
When temperature, heat exchanger can will be further heated to wind pushing temperature by the air of heat exchanger again again for supercooling, without increasing volume
Outer energy, on the other hand, refrigerant is subcooled, to improve the refrigeration or heating efficiency of cooling heat exchange device；
The refrigerant flow of heat exchanger is subcooled again by the way that the adjusting of reheating flow regulator is subcooled, realizes accurate adjusting
The function of air outlet temperature；
By heat pipe circuit, heat exchanger is used cooperatively again with supercooling, to be reached same energy-efficient performance, can be selected
Smaller heat exchange of heat pipe, to reduce system cost；
By being arranged surface cooler in air duct, and pass through surface cooler, heat pipe circuit, supercooling heat exchanger and supercooling reheating again
Flow regulator is used cooperatively, and is realized and is adjusted leaving air temp in large temperature range；
It is returned by adding condenser after supercooling again heat exchanger, and by the condenser added, surface cooler, heat pipe
Road is subcooled heat exchanger again and being used cooperatively for reheating flow regulator is subcooled, and realizes and is adjusted in bigger temperature range
Leaving air temp；
By the multipair evaporator of setting and heat exchanger again is subcooled, or distinguishes on evaporator and supercooling again heat exchanger
Multipair inlet tube and outlet are set, multiple refrigeration systems can be formed.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology and advantage, below will be to implementing
Example or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, the accompanying drawings in the following description is only
Only it is some embodiments of the present invention, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of structural schematic diagram of the cooling heat exchange device of energy saving dehumidifying described in the embodiment of the present invention one；
Fig. 2 be a kind of energy saving dehumidifying described in the embodiment of the present invention one cooling heat exchange device in three-way flow regulating valve
Structural schematic diagram；
Fig. 3 be a kind of energy saving dehumidifying described in the embodiment of the present invention one cooling heat exchange device in multiple regulating valves it is in parallel
Structural schematic diagram；
Fig. 4 be a kind of energy saving dehumidifying described in the embodiment of the present invention one cooling heat exchange device in regulating valve and bypass pipe simultaneously
The structural schematic diagram of connection；
Fig. 5 is a kind of structural schematic diagram of the cooling heat exchange device of energy saving dehumidifying described in the embodiment of the present invention two；
Fig. 6 is a kind of structural schematic diagram of the cooling heat exchange device of energy saving dehumidifying described in the embodiment of the present invention three；
Fig. 7 is a kind of structural schematic diagram of the cooling heat exchange device of energy saving dehumidifying described in the embodiment of the present invention four；
Fig. 8 is a kind of structural schematic diagram of the cooling heat exchange device of energy saving dehumidifying described in the embodiment of the present invention five；
Fig. 9 is a kind of structural schematic diagram of the cooling heat exchange device of energy saving dehumidifying described in the embodiment of the present invention six.
Wherein, attached drawing correspondence markings are in figure：
1- condenser 2- device for drying and filtering 3- reheating flow control valves
4- main road flow control valve 5- throttling set 6- gas-liquid separators
7- wind turbine 8- four-way reversing valve 9- check valves
10- three-way flow regulating valves
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
Step ground detailed description.Obviously, described embodiment is only one embodiment of the invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all under the premise of not making creative work
Other embodiment shall fall within the protection scope of the present invention.
" one embodiment " or " embodiment " referred to herein refers to that may be included at least one realization method of the present invention
A particular feature, structure, or characteristic.In the description of the present invention, it is to be understood that, term "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching
It states the present invention and simplifies description, do not indicate or imply the indicated device or element must have a particular orientation, with specific
Azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for retouching
Purpose is stated, relative importance is not understood to indicate or imply or implicitly indicates the quantity of indicated technical characteristic.By
This defines " first ", the feature of " second " can be expressed or what is implied includes one or more this feature.Moreover,
Term " first ", " second " etc. are for distinguishing similar object, without being used to describe specific sequence or precedence.It answers
The data that the understanding uses in this way can be interchanged in the appropriate case, so that the embodiment of the present invention described herein can be to remove
Sequence other than those of illustrating or describe herein is implemented.
A kind of cooling heat exchange device of energy saving dehumidifying, including coolant loop, heat pipe circuit, air duct and wind turbine 7, wherein institute
Coolant loop is stated to include sequentially connected compressor, condenser 1, heat exchanger, throttling set 5 and evaporator again is subcooled, it is described
Heat exchanger and the evaporator are located in the air duct again for supercooling, and the heat pipe circuit and the surface cooler are also set to the wind
In road, the wind turbine 7 is set in the air duct, and air flows under the action of wind turbine.
Embodiment one
As shown in Fig. 1, it is a kind of cooling heat exchange device of energy saving dehumidifying of the embodiment of the present invention one, the coolant loop
Including compressor, condenser 1, liquid storage device, device for drying and filtering 2, supercooling reheating flow regulator, heat exchanger, section is subcooled again
Device 5, evaporator and gas-liquid separator 6 are flowed, the supercooling reheating flow regulator includes reheating flow control valve 3 and main road
Flow control valve 4, the throttling set 5 can be capillary, throttle valve or expansion valve, the connection structure of the coolant loop
For the outlet of the compressor connects the inlet tube of the condenser 1, and the outlet of the condenser 1 connects the liquid storage
The inlet tube of device, the outlet of the liquid storage device connect the inlet tube of the device for drying and filtering 2, and the device for drying and filtering 2 goes out
Mouth pipe connects one end of the reheating flow control valve 3, and the other end of the reheating flow control valve 3 connects the supercooling reheating
The inlet tube of heat exchanger, the outlet that heat exchanger is subcooled again connect one end of the throttling set 5, the throttling set
5 other end connects the inlet tube of the evaporator, and the outlet of the evaporator connects the import of the gas-liquid separator 6
Pipe, the outlet of the gas-liquid separator 6 connects the inlet tube of the compressor, in order to control main road flow, the hot-fluid again
Adjustable valve 3 and the supercooling reheating heat exchangers in series structure 4 pipeline of main road flow control valve in parallel.
No matter supercooling reheating flow regulator in the cooling heat exchange device can there are many schemes, but which side
Case, purpose are all the circulation areas by changing main road, increase the pressure drop of main road, to promote to enable the refrigerant to flow direction supercooling again
Heat exchanger, in addition to above-mentioned adjusting form, above-mentioned reheating flow control valve 3 can also be arranged in the outlet that heat exchanger is subcooled again
Between pipe and the inlet tube of throttling set, a three-way flow regulating valve 10 as shown in Fig. 2, the threeway can also be used
Three ports of flow control valve 10 respectively with the outlet of the condenser 1, supercooling the inlet tube of heat exchanger and throttling again
The inlet tube of device 5 is connected, and three ports of the three-way flow regulating valve 10 can also exchange heat with the supercooling reheating respectively
The outlet of device, the inlet tube of throttling set 5 are connected with the outlet of the condenser 1, or using such as attached drawing 3 on main road
Shown in multiple regulating valves it is in parallel or even as shown in Fig. 4 by the regulating valve not Tongfang such as in parallel with the diminution bypass pipe of diameter
Case.Regulating valve can be the valve with the ability that continuously adjusts, and can also use solenoid valve.
The heat pipe circuit includes precool heat exchanger device and heat exchanger, the precool heat exchanger device and reheating heat exchanger are distinguished again
It is connected with an at least liquid pipe by an at least tracheae,.
The evaporator is located at the air duct close to the position of air inlet, and heat exchanger is located at the air duct again for the supercooling
Close to the position of air outlet；The precool heat exchanger device is located at the evaporator close to the side of air inlet, the heat exchanger again
Positioned at the evaporator close to the other side of air outlet；
The cooling heat exchange device further includes a controller (not shown), the controller control supercooling reheating flow tune
The work of regulating device, throttling set 5.
The cooling heat exchange device further includes a temperature monitoring (not shown), the temperature monitoring and the control
Device connects, the temperature for monitoring and feeding back air outlet or return air inlet.
Its operation principle is briefly explained with reference to the structure of cooling heat exchange device：
Cyclic process of the refrigerant in coolant loop is as follows：Refrigerant becomes the gas of high temperature and pressure after compressor compresses
Body, high temperature and high pressure gas enters the condenser 1 being located outside, and heat release forms the liquid or gas of high normal pressure and temperature in condenser 1
After the liquid or gas-liquid mixture of high normal pressure and temperature flow through liquid storage device and device for drying and filtering 2, reheating flow-rate adjustment is subcooled in liquid mixture
The reheating flow control valve 3 of device bypasses part of refrigerant to heat exchanger again is subcooled, and wherein bypass amount is by leaving air temp
It determines, not reaching temperature, then bypass amount increases, and into the refrigerant that heat exchanger is subcooled again based on condensed liquid, is being subcooled
Predominantly single-phase heat exchange in heat exchanger again, the high pressure Normal Atmospheric Temperature Liquid being subcooled in heat exchanger again exchange heat with outside air and are formed
High pressure low temperature liquid is then mixed with by refrigerant of the another part without supercooling of main road flow control valve 4, mixed
High pressure low temperature refrigerant becomes the liquid of low-temp low-pressure by throttling set 5, and the liquid of low-temp low-pressure enters in evaporator, and
Heat exchange is carried out in evaporator with outside air, gasifies after the heat of low-temp low-pressure liquid refrigerant absorption air and generates low pressure gas
State refrigerant, low-pressure gaseous refrigerant are sucked by compressor again, and high temperature and high pressure gaseous refrigerant is re-formed after compressor compresses,
So constantly recycle.
Cool-down dehumidification and reheating process of the air in air duct are as follows：Extraneous air is under the action of wind turbine 7 into inlet air
Road, successively with precool heat exchanger device, evaporator, again the surface exchange heat of heat exchanger and supercooling heat exchanger again, air passes through
After precool heat exchanger device, working medium is absorbed heat evaporation from air in precool heat exchanger device, becomes gas working medium, and gas working medium flows into reheating and changes
Hot device, extraneous air is since heat exchange, temperature reduce, and close to the saturation state of air, air is using evaporator, Air Temperature at this time
Degree further decreases, and the most of moisture in air is condensed out, and air absolute humidity reduces, and relative humidity is very high；Air
Further circulation, by heat exchanger again, since the gas working medium temperature in heat exchanger again is higher, external air temperature compared with
It is low, then the gas working medium condensation heat in heat exchanger, become liquid working substance and flow into the above-mentioned cycle of precool heat exchanger device continuation again, outside
Portion's air passes through supercooling heat exchanger again since heat exchange, air themperature rise, since 1 condensation temperature of condenser is higher,
The high pressure Normal Atmospheric Temperature Liquid temperature that inflow is subcooled in heat exchanger again is still higher, and air themperature is further up, and air is absolute at this time
Humidity is constant, and relative humidity is remarkably decreased, to reach the epidemic disaster requirement of needs.
The process of the cooling heat exchange device control leaving air temp is as follows：Temperature monitoring monitors air outlet temperature, when going out
When air temperature is less than setting target temperature, big reheating flow control valve 3 is opened in controller control, turns down main road flow control valve 4, is increased
Add the refrigerant flow by heat exchanger is subcooled again, to increase leaving air temp；When leaving air temp is higher than setting target temperature
When, controller control turns down reheating flow control valve 3, opens big main road flow control valve 4, reduces by heat exchanger is subcooled again
Refrigerant flow, to reduce leaving air temp.
In the application of typical central air-conditioning, it is assumed that leaving air temp requires to be 18 DEG C, and inlet air temperature is 26 DEG C, then passes through pre-
Cold air themperature can be reduced to 22 degrees Celsius, then by evaporator cool-down dehumidification, and the air themperature after evaporator becomes 12 DEG C, warp
The thermogenic action of heat exchanger is crossed again, it is 16 DEG C that air themperature, which increases, is also not up to 18 DEG C of leaving air temp requirement at this time.Pass through
Reheating flow regulator is subcooled, the refrigerant flow that heat exchanger is subcooled again in supply is adjusted, so as to control leaving air temp
On required 18 DEG C.As a comparison, if simple use supercooling heat exchanger again, no heat pipe entering the wind 26 DEG C,
Air carries out cool-down dehumidification via evaporator, and the temperature after evaporator is generally 12 DEG C, and the refrigerating capacity of refrigeration system is suitable at this time
In air is reduced to from 26 DEG C 12 DEG C and dehumidify needed for energy.If leaving air temp is still 18 DEG C, supercooling reheating is needed to change
Air themperature is promoted to 18 DEG C by hot device by 12 DEG C.Here the temperature difference is quite big, and it is single-phase heat exchange that heat exchanger, which is subcooled again, is changed
Hot coefficient is low, it is necessary to have prodigious heat exchange area just to can reach required heat transfer effect, lead to heat exchanger cost increase, heat exchanger
Resistance increases.
Embodiment two
As shown in Fig. 5, embodiment two is increased compared with the coolant loop of embodiment one for switching heating and cooling condition
Four-way reversing valve 8 and check valve 9, the four-way reversing valve 8 be equipped with tetra- ports C, D, E and S, the port C and condenser 1
Inlet tube connection, the port D connects with the outlet of compressor, and the port E is connected with the outlet of evaporator, described
Port S is connected with the inlet tube of gas-liquid separator 6.
Four check valves 9 are additionally arranged around the liquid storage device of the coolant loop, four check valves 9 are respectively arranged on condensation
Between device 1 and the inlet tube of liquid storage device, between the outlet and reheating flow control valve 3 of liquid storage device, 3 He of reheating flow control valve
Between the inlet tube of liquid storage device, between the outlet and condenser 1 of liquid storage device, the first two check valve 9 for control refrigerant from
Heat exchanger, latter two check valve 9 flow to condensation to the supercooling of the flow direction of condenser 1 for controlling refrigerant from supercooling reheating heat exchanger again
Device 1.
It is additionally arranged the check valve 9 being connected in series between the throttling set 5 and supercooling reheating heat exchanger exit pipe, for controlling
Refrigerant processed flows to evaporator from supercooling reheating heat exchanger, and the inlet tube of evaporator and supercooling are again between the outlet of heat exchanger
It is additionally arranged the check valve 9 in parallel with throttling set 5, heat exchanger again is subcooled from evaporator flow direction for controlling refrigerant.
Its operation principle is briefly explained with reference to the structure of cooling heat exchange device：
Under cooling condition, cyclic process of the refrigerant in coolant loop is similar with embodiment one, and refrigerant is compressed
Become the gas of high temperature and pressure after machine compression, D port of the high temperature and high pressure gas through four-way reversing valve 8 flows to C-terminal mouth, then enter
The condenser 1 being located outside, and heat release forms the liquid or gas-liquid mixture of high normal pressure and temperature in condenser 1, high normal pressure and temperature
Liquid or gas-liquid mixture pass through the check valve 9 being set between 1 outlet of condenser and liquid storage device inlet tube and enter liquid storage device, then pass through
Check valve 9 between the outlet and reheating flow control valve 3 of liquid storage device, after a part is by reheating flow control valve 3
Into supercooling heat exchanger again, high pressure Normal Atmospheric Temperature Liquid of the supercooling again in heat exchanger, which exchanges heat with outside air and form height, to be forced down
Geothermal liquid is then mixed with by another part refrigerant of main road flow control valve 4, mixed high pressure low temperature refrigerant warp
The liquid of the liquid crossed and become low-temp low-pressure after 5 concatenated check valve 9 of throttling set and throttling set 5, low-temp low-pressure enters
In evaporator, and heat exchange is carried out with outside air in evaporator, after low-temp low-pressure liquid refrigerant absorbs the heat of air
Gasification generates low-pressure gaseous refrigerant, and low-pressure gaseous refrigerant is sucked by compressor again, and high temperature is re-formed after compressor compresses
High-pressure gaseous refrigerant so constantly recycles.
Under cooling condition, dehumidification process of the air in air duct is identical as embodiment one.
Under cooling condition, the process and one phase of embodiment of the controller control leaving air temp of the cooling heat exchange device
Together.
Under heating condition, cyclic process of the refrigerant in coolant loop is as follows：The function phase of evaporator and condenser 1
It mutually replaces, evaporator becomes condenser, and condenser becomes evaporator, and refrigerant becomes the gas of high temperature and pressure after compressor compresses
Body, D port of the high temperature and high pressure gas through four-way reversing valve 8 flow to the ports E, then enter and are located at indoor condenser (refrigeration work
Evaporator under condition), and heat release forms the liquid or gas-liquid mixture of high normal pressure and temperature in condenser, the liquid of high normal pressure and temperature or
Gas-liquid mixture flows into supercooling heat exchanger again through the check valve 9 in parallel with throttling set 5, and mainstream adjustable valve is controllable to be entered
The refrigerant flow of heat exchanger is subcooled again, the refrigerant being subcooled in heat exchanger again forms cryogenic liquid after further heat release
Liquid storage device is flowed into, then enters evaporator (condenser 1 under cooling condition) heat absorption and forms low-pressure gaseous refrigerant, low-pressure gaseous
C-terminal mouth of the refrigerant through four-way reversing valve 8 flows to the ports S, then is sucked by compressor, and high temperature height is re-formed after compressor compresses
Gaseous refrigerant is pressed, is so constantly recycled.
Under heating condition, external air temperature is low, and air humidity is low, is not required to cool-down dehumidification, air is under fan action
Into in air duct, since air themperature is low, heat pipe circuit does not work at this time, and air passes through the condenser (evaporation under cooling condition
Device) temperature rise afterwards, after heat exchanger again is subcooled, since refrigerant further discharges heat, air themperature into air
It is further up, to reach the temperature requirement of needs.
Under heating condition, the controller of the cooling heat exchange device controls leaving air temp, when leaving air temp is less than setting
Target temperature when, turn down main road flow control valve 4, increase the refrigerant flow by supercooling heat exchanger again, to increase
Leaving air temp；When target temperature of the leaving air temp higher than setting, big main road flow control valve 4 is opened, is reduced by supercooling reheating
The refrigerant flow of heat exchanger, to reduce leaving air temp.It is subcooled at this time again after heat exchanger is located at condenser 1, is equivalent to increasing
The heat exchange area of condenser 1 is added, condensation temperature can be reduced, increased the degree of supercooling of refrigerant, to improve the system of device
The thermal efficiency.
Embodiment three
As shown in Fig. 6, it is a kind of cooling heat exchange device of energy saving dehumidifying of embodiment three, including multiple coolant loops,
Each coolant loop includes compressor, condenser 1, liquid storage device, device for drying and filtering 2, reheating flow control valve 3, main road stream
Adjustable valve 4, heat exchanger, throttling set 5, evaporator and gas-liquid separator 6, the throttling set 5 can be hair again for supercooling
The connection structure of tubule, throttle valve or expansion valve, the coolant loop is that the outlet of the compressor connects the condenser
1 inlet tube, the outlet of the condenser 1 connect the inlet tube of the liquid storage device, and the outlet of the liquid storage device connects institute
The inlet tube of device for drying and filtering 2 is stated, the outlet of the device for drying and filtering 2 connects one end of the reheating flow control valve 3, institute
The other end for stating reheating flow control valve 3 connects the inlet tube of the supercooling heat exchanger again, supercooling heat exchanger again
Outlet connects one end of the throttling set 5, and the other end of the throttling set 5 connects the inlet tube of the evaporator, institute
The outlet for stating evaporator connects the inlet tube of the gas-liquid separator 6, and the outlet of the gas-liquid separator 6 connects the pressure
The inlet tube of contracting machine, in order to control main road flow, the reheating flow control valve 3 and the supercooling reheating heat exchangers in series knot
Structure one 4 pipeline of main road flow control valve of parallel connection.
Heat exchanger and evaporator are respectively positioned in air duct again for the supercooling of each coolant loop, multiple supercooling reheating
Heat exchanger is arranged in parallel the position close to air outlet in air duct, and multiple evaporators are arranged in parallel in air duct close to air inlet
Position.
Example IV
As shown in Fig. 7, it is a kind of cooling heat exchange device of energy saving dehumidifying of example IV, including multiple coolant loops,
Each coolant loop includes compressor, condenser 1, liquid storage device, device for drying and filtering 2, reheating flow control valve 3, main road stream
Adjustable valve 4, heat exchanger, throttling set 5, evaporator and gas-liquid separator 6, the throttling set 5 can be hair again for supercooling
Tubule, throttle valve or expansion valve, heat exchanger and the evaporator are respectively equipped with multipair inlet tube and outlet again for the supercooling,
The connection structure of each coolant loop is that the outlet of the compressor connects the inlet tube of the condenser 1, described cold
The outlet of condenser 1 connects the inlet tube of the liquid storage device, the outlet of the liquid storage device connect the device for drying and filtering 2 into
Mouth pipe, the outlet of the device for drying and filtering 2 connect one end of the reheating flow control valve 3, the reheating flow control valve 3
Other end connection supercooling one of heat exchanger inlet tube again, one of heat exchanger goes out again for the supercooling
Mouth pipe connects one end of the throttling set 5, and the other end of the throttling set 5 connects the import of one of described evaporator
Pipe, one of described evaporator outlet connect the inlet tube of the gas-liquid separator 6, and the gas-liquid separator 6 goes out
Mouth pipe connects the inlet tube of the compressor, in order to control main road flow, the reheating flow control valve 3 and the supercooling reheating
Heat exchangers in series structure 4 pipeline of main road flow control valve in parallel.
Embodiment five
As shown in Fig. 8, it is a kind of cooling heat exchange device of energy saving dehumidifying of embodiment five, the coolant loop includes pressure
Contracting machine, condenser 1, reheating flow control valve 3, main road flow control valve 4, supercooling heat exchanger, throttling set 5 and evaporation again
The structure of device, the coolant loop is similar with embodiment one, and details are not described herein again.Difference lies in, the heat pipe circuit is I types,
The first half of the I types heat pipe circuit is the heat exchanger again, and lower half is the precool heat exchanger device, the precool heat exchanger device
It is connected with liquid pipe by tracheae between the heat exchanger again, correspondingly, the air duct is U-shaped, the precool heat exchanger device
And evaporator is located at the air inlet side in the U-shaped air duct, heat exchanger is subcooled again positioned at described U-shaped in the heat exchanger again
The air outlet side in air duct, heat pipe circuit heat pipe circuit may also have other layout shapes other than attached form shown in Fig. 8
Formula, details are not described herein again.Embodiment six
As shown in Fig. 9, it is a kind of cooling heat exchange device of energy saving dehumidifying of embodiment six, refrigerant returns described in the present embodiment
The connection structure on road is similar with embodiment five, and difference lies in the heat pipe circuit is L-type, and two of the L-type heat pipe circuit are straight
While being made of the precool heat exchanger device and reheating heat exchanger, pass through tracheae between the precool heat exchanger device and the heat exchanger again
It is connected with liquid pipe；On the other hand, multiple condensers 1 and multiple controls condenser 1 are equipped in the coolant loop
The multiple condenser 1 of regulating valve it is parallel with one another, at least one condenser 1 be located at it is described supercooling again heat exchanger close to go out
In the air duct of air port side, the condenser 1 in air duct should be located at after supercooling again heat exchanger, outlet air can be further increased
The wind pushing temperature of mouth, in addition, this mode for increasing condenser is also applied for the situation of U-shaped heat pipe circuit and I type heat pipe circuits
The process of the cooling heat exchange device control leaving air temp is as follows：Temperature monitoring monitors air outlet temperature, when going out
When air temperature is less than setting target temperature, big reheating flow control valve 3 is opened in controller control, turns down main road flow control valve 4, is increased
Add the refrigerant flow by heat exchanger is subcooled again, to increase leaving air temp, if the system by heat exchanger is subcooled again
Cryogen flow increases to maximum, and leaving air temp is still below setting target temperature, controller control open be located in air duct with it is described cold
The regulating valve that condenser 1 connects, so that leaving air temp is increased to setting target temperature；When leaving air temp is higher than setting target temperature
When, controller control turns down reheating flow control valve 3, opens big main road flow control valve 4, reduces by heat exchanger is subcooled again
Refrigerant flow, to reduce leaving air temp.
Embodiment seven
As shown in attached drawing 1,5 or 8, in the precool heat exchanger device of heat pipe circuit and again between heat exchanger, it is cold table can be added
Device.In some application scenarios, client can supply additional low temperature chilled water, at this moment can be changed in precool heat exchanger device and reheating
Increase by one group of surface cooler between hot device, for air cooling-down.Its benefit is can to share the load of processing air, using small by one
A little refrigeration systems reduces investment of equipment.
In also a kind of application scenario, need air-treatment to lower relative humidity, it at this time can be in precool heat exchanger device
Afterwards, increase by one group of surface cooler before evaporator, air is first carried out by cool-down dehumidification using common cooling-water machine.Not due to common cooling-water machine
Can operation to low temperature, therefore using evaporator further cool-down dehumidification is carried out to the air after dehumidifying, finally needed with reaching
Humidity.Under same application, surface cooler can also be arranged between evaporator and again heat exchanger, be carried out at this time with evaporator
First stage dehumidifies.With a low temperature water cooling machine to surface cooler for the chilled water of lower temperature, to carry out further cool-down dehumidification.
In summer temp high temperature, if heat pipe type selecting is bigger than normal, it is possible that even if completely closing supercooling reheat machine,
The still higher situation of leaving air temp.One group of surface cooler can be increased before precool heat exchanger device at this time, to reduce inlet air temperature,
To reduce leaving air temp indirectly.Similar, one group of surface cooler can also be increased after supercooling again heat exchanger, be used for
Reduce leaving air temp.
Surface cooler in the present embodiment, it is also possible to which the evaporator of self-contained refrigerating system is replaced, and realizes similar purpose.
Structure shown by the present embodiment attached drawing 1,5 or 8 is equally applicable for aforementioned all embodiments.The above is this hair
Bright preferred embodiment, it is noted that for those skilled in the art, do not departing from the principle of the invention
Under the premise of, several improvements and modifications can also be made, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of cooling heat exchange device of energy saving dehumidifying, including an at least coolant loop and air duct, the coolant loop include according to
The compressor of secondary connection, condenser (1), supercooling heat exchanger, throttling set (5) and evaporator again, the evaporator and described
Heat exchanger is located in the air duct again for supercooling, and the evaporator is located at the air duct close to the position of air inlet, described
Heat exchanger is located at the air duct close to the position of air outlet again for supercooling, which is characterized in that the cooling heat exchange device further includes：
Heat pipe circuit, the heat pipe circuit are located in the air duct, and the heat pipe circuit includes precool heat exchanger device and reheating heat exchange
Device, in air duct of the precool heat exchanger device between air inlet and the evaporator, the heat exchanger again is located at the steaming
It sends out in device and the air duct being subcooled between heat exchanger again.
2. a kind of cooling heat exchange device of energy saving dehumidifying according to claim 1, which is characterized in that the heat pipe circuit is
U-shaped, two straight flanges of the U-shaped heat pipe circuit are made of the precool heat exchanger device and reheating heat exchanger, the precool heat exchanger device
It is connected with liquid pipe by tracheae between the heat exchanger again.
3. a kind of cooling heat exchange device of energy saving dehumidifying according to claim 1, which is characterized in that the heat pipe circuit is
Two straight flanges of L-type, the L-type heat pipe circuit are made of the precool heat exchanger device and reheating heat exchanger, the precool heat exchanger device
It is connected with liquid pipe by tracheae between the heat exchanger again.
4. a kind of cooling heat exchange device of energy saving dehumidifying according to claim 1, which is characterized in that the heat pipe circuit is
The first half of I types, the I types heat pipe circuit is the heat exchanger again, and lower half is the precool heat exchanger device, and the precooling is changed
It is connected with liquid pipe by tracheae between hot device and the heat exchanger again.
5. a kind of cooling heat exchange device of energy saving dehumidifying according to claim 1, which is characterized in that the coolant loop packet
The condenser (1) of multiple parallel connections is included, at least one condenser (1) is located at the heat exchanger that is subcooled again close to air outlet
In the air duct of side.
6. a kind of cooling heat exchange device of energy saving dehumidifying according to claim 1, which is characterized in that including multiple described cold
Matchmaker circuit, the supercooling reheating heat exchanger parallel connection in multiple coolant loops are set to the air duct close to the position of air outlet, more
Evaporator parallel connection in a coolant loop is set to the air duct close to the position of air inlet.
7. a kind of cooling heat exchange device of energy saving dehumidifying according to claim 1, which is characterized in that the supercooling reheating is changed
Hot device and the evaporator are respectively equipped with multipair inlet tube and outlet, and heat exchanger and the evaporator again is subcooled by described
Multipair inlet tube and outlet form a plurality of coolant loop.
8. a kind of cooling heat exchange device of energy saving dehumidifying according to claim 1, which is characterized in that further include surface cooler,
The surface cooler is located in the air duct between heat exchanger and air inlet again.
9. according to a kind of cooling heat exchange device of any energy saving dehumidifying of claim 1-8, which is characterized in that the refrigerant
Circuit further includes supercooling reheating flow regulator, and the supercooling reheating flow regulator enters the supercooling again for adjusting
The refrigerant flow of heat exchanger.
10. a kind of control method of the cooling heat exchange device of energy saving dehumidifying, which is characterized in that the control of the cooling heat exchange device
Step is：
(1) air outlet temperature monitored according to temperature monitoring is compared with setting target temperature, and executes next step；
(2) when leaving air temp is less than setting target temperature, controller control increases the refrigerant by heat exchanger is subcooled again
Flow, to increase leaving air temp；
(3) when leaving air temp is higher than setting target temperature, controller control reduces the refrigerant by heat exchanger is subcooled again
Flow, to reduce leaving air temp.
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| CN201810915360.2A CN108800668A (en) | 2018-08-13 | 2018-08-13 | A kind of the cooling heat exchange device and its control method of energy saving dehumidifying |
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| CN201810915360.2A CN108800668A (en) | 2018-08-13 | 2018-08-13 | A kind of the cooling heat exchange device and its control method of energy saving dehumidifying |
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| CN110345573A (en) * | 2019-07-02 | 2019-10-18 | 沈珂 | A kind of dehumidifying heat-exchanger rig |
| CN112189492A (en) * | 2020-12-07 | 2021-01-08 | 国家粳稻工程技术研究中心 | Indoor dehumidification system in low-temperature high-humidity environment |
| CN113218099A (en) * | 2021-04-01 | 2021-08-06 | 湖南雅立科技开发有限公司 | Gas treatment method and system for heat recovery or defrosting by using refrigerant |
| CN115218299A (en) * | 2022-06-16 | 2022-10-21 | 上海伯涵热能科技有限公司 | Ultra-high energy efficiency dehumidifier for cutting off thermal bridge connection between supercooling section and condensing section fin |
| US20230092476A1 (en) * | 2021-09-17 | 2023-03-23 | Addison Hvac Llc | Air-conditioning system with variable subcooling |
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