CN104654479B - A kind of heat pump driven multi-stage solution dehumidifying Fresh air handing unit - Google Patents
A kind of heat pump driven multi-stage solution dehumidifying Fresh air handing unit Download PDFInfo
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- CN104654479B CN104654479B CN201510063468.XA CN201510063468A CN104654479B CN 104654479 B CN104654479 B CN 104654479B CN 201510063468 A CN201510063468 A CN 201510063468A CN 104654479 B CN104654479 B CN 104654479B
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- Prior art keywords
- solution
- fresh air
- unit
- moisture
- heat
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- 239000003570 air Substances 0.000 title claims abstract description 113
- 239000000203 mixtures Substances 0.000 claims abstract description 31
- 239000007788 liquids Substances 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 238000000034 methods Methods 0.000 description 21
- 238000007791 dehumidification Methods 0.000 description 15
- 230000008929 regeneration Effects 0.000 description 10
- 239000007921 sprays Substances 0.000 description 9
- 239000003507 refrigerants Substances 0.000 description 8
- 235000019628 coolness Nutrition 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000011901 water Substances 0.000 description 5
- 230000001172 regenerating Effects 0.000 description 4
- 230000005494 condensation Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gases Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000006243 chemical reactions Methods 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste materials Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/02—System or Device comprising a heat pump as a subsystem, e.g. combined with humidification/dehumidification, heating, natural energy or with hybrid system
- F24F2203/021—Compression cycle
Abstract
Description
Technical field
The present invention relates to a kind of Fresh air handing unit, at a kind of heat pump driven multi-stage solution dehumidifying fresh air Manage unit.
Background technology
The main task of air conditioning system is to meet indoor suitable humiture parameter requirements, and air dewetting is to meet Indoor suitable humidity level, the important step of improvement indoor environment comfortableness.Existing dehumidification mode is more with dehumidification by condensation side Based on formula, i.e., using refrigerants such as low-temperature cold water, refrigerants by below air cooling-down to dew-point temperature so that moisture in air coagulates Tie to complete dehumidification process.Because the sink temperature of needs is relatively low (dew-point temperature for being less than air), the evaporation of refrigeration machine is caused Temperature is reduced, so as to have a strong impact on the coefficient of performance of refrigeration machine.In addition, to there is wind pushing temperature inclined for traditional dehumidification by condensation mode Need reheating to cause energy waste under low, partial picture and there are problems that condensed water, influence, therefore seek new Highly effective air humidity processing mode turns into the study hotspot of current field of heating ventilation air conditioning.
Solution dehumidification mode uses the salting liquid with hygroscopic nature as medium, and heat transfer biography is carried out by solution and fresh air Matter realizes the dehumidification treatments process to fresh air.As a kind of effective air humidity processing approach, solution dehumidification mode can Efficiently meet air humidity process demand, and with not needing reheating, using advantages such as various energy resources, in recent years in China Increasingly it is widely applied.The air processor that existing solution dehumidification mode is effectively combined with heat pump cycle, for example ZL03134688.X, ZL200610012259.3 are disclosed using the heat pump drive-type solution dehumidifying fresh air handling group that solution is medium Handling process, by setting heat pump cycle, solution temperature is reduced using the cold of wherein evaporator, strengthens the hygroscopicity of solution Can, the heat of condenser is used for the concentrating regenerative of hygroscopic solution.
For the solution dehumidification processing unit of this kind of use heat pump cycle, when solution dehumidification process is all of vaporizer side It is condenser side heat because the heat exhaust of condenser in heat pump cycle is equal to evaporator cold with compressor power consumption sum during cold Amount is more than vaporizer side cold, and the heat exhaust of condenser is more than the heat in system needed for solution concentrating regenerative.This cold and hot amount Between mismatch can influence the performance of unit, existing patent gives solution party from the angle for excluding condenser side waste heat Case.For example in patent ZL03134688.X, by setting auxiliary condenser (being cooled down using air) to take away unnecessary condenser Heat exhaust, but because auxiliary condenser is so that the ability that air takes away heat has to air heating (water capacity does not change) Limit, condensation temperature is still higher.ZL201010175940.6 is disclosed a kind of evaporated using regenerative process air draft and cooled down come band The solution dehumidifying fresh air handling group of condenser waste heat is walked, the angle regenerated from solution, condenser side heat is to obtain To what is effectively utilized, and the scheme of auxiliary condenser discharge condenser heat fails to make full use of condenser side heat to come to solution Regenerated.
Therefore, from the point of view of prior art background, solution regeneration can be carried out using condenser side net quantity of heat by still lacking The driving solution dehumidification device of heat pump.
The content of the invention
In view of the above-mentioned problems, all being had it is an object of the invention to provide a kind of condenser heat that can make heat pump cycle Imitate the heat pump driven multi-stage solution dehumidifying Fresh air handing unit utilized.
To achieve the above object, the present invention uses following technical scheme：A kind of heat pump driven multi-stage solution dehumidifying fresh air Handle unit, it is characterised in that：It includes multistage fresh air unit, includes a solution dehumidification per one-level fresh air unit Device, a solution regenerator, an assisted solution dehumidifier, a compressor, a condenser, an expansion valve and an evaporator；The pressure Contracting machine, condenser, expansion valve and evaporator are sequentially connected the circulation loop of composition solution heat exchange；The heat-exchange end of the condenser is led to Cross a solution circulation pump and composition solution circulation loop is connected with the solution regenerator；The heat-exchange end of the evaporator is molten by one Liquid circulating pump is connected composition solution circulation loop with the solution moisture removing device；The assisted solution dehumidifier and a solution circulation pump Solution circulation loop in connection composition dehumidifier；The solution regenerator connects with solution moisture removing device, assisted solution dehumidifier respectively Connect composition solution circulation loop；Set in the solution circulation loop between the solution regenerator and the solution moisture removing device Put a plate type heat exchanger.
Arranged between the multistage fresh air unit by the way of series connection.
At the rear of the solution moisture removing device of fresh air unit described in afterbody, one surface cooler is set.
The quantity of the fresh air unit is two.
A kind of heat pump driven multi-stage solution dehumidifying Fresh air handing unit, it is characterised in that：It includes multistage Fresh air handing Unit and an assisted solution dehumidifier；Include a solution moisture removing device, a solution regenerator, a pressure per one-level fresh air unit Contracting machine, a condenser, an expansion valve and an evaporator；The compressor, condenser, expansion valve and evaporator are sequentially connected composition The circulation loop of solution heat exchange；The heat-exchange end of the condenser is connected composition by a solution circulation pump with the solution regenerator Solution circulation loop；The heat-exchange end of the evaporator is connected composition solution with the solution moisture removing device by a solution circulation pump and followed Loop back path；The solution regenerator be connected with solution moisture removing device composition solution circulation loop, the solution regenerator with it is described A plate type heat exchanger is set in the solution circulation loop between solution moisture removing device；The assisted solution dehumidifier is located at first The front of the solution moisture removing device of the level fresh air unit, the assisted solution dehumidifier and the Fresh air handings at different levels The solution regenerator connection of unit separately constitutes solution circulation loop.
The present invention is due to taking above technical scheme, and it has advantages below：1st, the present invention is per one-level fresh air unit In compressor, condenser, expansion valve and evaporator be sequentially connected composition heat pump cycle loop, be characterized in the cold of heat pump cycle Solidifying heat is completely used for the circulation solution in heated solution regenerator, and solution is regenerated, while the evaporator of heat pump cycle Cold is used for the circulation solution during cooling segment solution dehumidification, and is provided with assisted solution dehumidifier, significantly improve by Demand between solution dehumidification process cold and regenerative process heat is inconsistent caused by heat pump cycle cold and hot amount is mismatched asks Topic so that the cold and heat of heat pump cycle can be utilized more fully, and be favorably improved the efficiency water of heat pump cycle It is flat.2nd, one aspect of the present invention is heated using the condenser of heat pump cycle to entering the solution that solution regenerator is sprayed, and is met Solution regeneration heat requirements, are on the other hand dehumidified using the evaporator of heat pump cycle come cooling segment dehumidification solution so as to strengthen its Ability.3rd, the present invention sets multistage fresh air unit, and the processing procedure more matched can be achieved；Also, include per one-level Heat pump cycle, solution dehumidification-regeneration cycle etc., the heat and wet treatment process between air and solution are distributary flow pattern；It is new at every grade In wind processing unit, regeneration air flows through heat insulation-type solution regenerator and solution is regenerated, and is flowed out by solution regenerator Higher concentration solution is partly into the heat insulation-type solution moisture removing device cooled using heat pump cycle evaporator to solution, one Divide the assisted solution dehumidifier for entering heat insulation-type；Fresh air is flowed through assisted solution dehumidifier and solution is carried out using evaporator successively The solution moisture removing device of cooling, the solution flowed out by solution moisture removing device is sent to solution regenerator, in solution moisture removing device and solution again Set plate type heat exchanger to reclaim solution heat between the concentrated solution and weak solution that are circulated between raw device, contribute to improvement to handle Process efficiency.4th, the present invention sets a surface cooler at the rear of the solution moisture removing device of afterbody fresh air unit, to meeting Air after humidity process demand further cools, and enables air-supply while meeting the multiple demand of humidity and temperature.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention one；
Fig. 2 is the structural representation of the embodiment of the present invention two.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Embodiment one：
As shown in figure 1, the Fresh air handing unit of the present embodiment includes multistage fresh air unit I, per one-level Fresh air handing Unit I include a solution moisture removing device A, a solution regenerator B, an assisted solution dehumidifier C, a compressor 1, a condenser 2, One expansion valve 3 and an evaporator 4.Wherein, compressor 1, condenser 2, expansion valve 3 and evaporator 4 are sequentially connected composition solution and changed The circulation loop (also known as heat pump cycle loop) of heat；The heat-exchange end of condenser 2 passes through a solution circulation pump 5 and solution regenerator B Connection composition solution circulation loop；It is molten that the heat-exchange end of evaporator 4 is connected composition with solution moisture removing device A by a solution circulation pump 5 Liquid circulation loop；Assisted solution dehumidifier C is connected solution circulation loop in composition dehumidifier with a solution circulation pump 5；Solution is again Raw device B be connected composition solution circulation loop with solution moisture removing device A, assisted solution dehumidifier C respectively, and in solution regenerator B and One plate type heat exchanger 6 is set in the solution circulation loop between solution moisture removing device A.
In above-described embodiment, arranged between multistage fresh air unit I by the way of series connection, i.e. fresh air (pending sky Gas) pass sequentially through to turn into after every one-level fresh air unit I and blow.
In above-described embodiment, at afterbody fresh air unit I solution moisture removing device A rear a table can be set cold Device 7, for cooling to the air after multi-stage solution dehumidifying device A.
In above-described embodiment, the fresh air unit I included by Fresh air handing unit can be two-stage.
In above-described embodiment, solution regenerator B, solution moisture removing device A and assisted solution dehumidifier C are heat insulation-type.
Illustrate the operation principle of the present embodiment by taking the Fresh air handing unit including two-stage fresh air unit I as an example below：
As shown in figure 1, fresh air (pending air) initially enters the assisted solution dehumidifying in first order fresh air unit I Device C, with from assisted solution dehumidifier C top sprays and under solution carry out distributary caloic exchange process；Afterwards fresh air continue into Enter solution moisture removing device A, and with from its top spray and under solution carry out distributary caloic exchange process；Fresh air is by solution moisture removing device Continue to sequentially enter the second level processing unit I assisted solution dehumidifier C, solution moisture removing device A after A outflows, fresh air with from molten Liquid dehumidifier A top sprays and under solution carry out caloic exchange after flow out second level fresh air unit I, meet the wet of fresh air Spend process demand.Afterwards, temperature can be adjusted according to the fresh air temperature conditions after being processed, i.e.,：When new air temperature compared with Gao Shi, is cooled using surface cooler 7 to fresh air, and wherein the low-temperature receiver in surface cooler 7 is the refrigerants such as high temperature cold water.By surface cooler Fresh air after 7 coolings turns into air-supply, you can deliver to the place of demand.
At the same time, regeneration air (can be fresh air or indoor exhaust wind) is regenerated by second level fresh air unit I solution Device B enters, and is exchanged with carrying out caloic from the lower solution of solution regenerator B top sprays, regeneration of the realization to solution；Regeneration is empty Gas goes successively to first order fresh air unit I solution regenerator B after second level solution regenerator B outflows, again with from Solution regenerator B top sprays and under solution carry out caloic exchange after, flow out first order fresh air unit I, as air draft It is discharged.
Per one-level fresh air unit I operationally, the solution of assisted solution dehumidifier C bottoms is by solution circulation pump 5, It is sent to its top spray mostly as dehumidifier interior circulation solution, and carrying out caloic with fresh air exchanges.Solution moisture removing device A bottoms The solution in portion is largely flowed into evaporator 4, solution is cooled using evaporator 4, to take away solution and air caloic Heat in exchange process, strengthens the dehumidifying effect of solution, and solution is sent to solution moisture removing device A top spray again afterwards, with Fresh air carries out caloic exchange.From the solution of solution moisture removing device A bottoms, some flows out from bottom, with being dehumidified from assisted solution The solution of device C bottoms outflow is sent to solution regenerator B together.
Largely flow into condenser 2, solution is carried out in the solution of solution regenerator B bottoms outflow using condenser 2 Heating, so that the caloic increased between solution and regeneration air exchanges driving force, improvement regeneration effect；Solution after heating is sent again To solution regenerator B top sprays, carry out caloic with regeneration air and exchange.Remaining solution flowed out by solution regenerator B bottoms It is divided into two parts again, a part is sent back to solution moisture removing device A bottoms, with being sprayed from solution moisture removing device A and lower solution is mixed Close, another part is sent back to assisted solution dehumidifier C, is sent to again after being mixed with the solution of assisted solution dehumidifier C bottoms Assisted solution dehumidifier C top sprays, complete whole solution cyclic process.For solution regenerator B and solution moisture removing device A it Between the solution that circulates, 6 pairs of plate type heat exchanger is flowed into, outflow solution moisture removing device A two strands of solution carry out recuperation of heat.
Evaporator 4 is responsible for cooling to the most solutions for flowing out solution moisture removing device A, and condenser 2 is then responsible for outflow solution Regenerator B most solutions heating.The refrigerants such as the refrigerant in evaporator 4 exchange heat with the solution flowed out by solution moisture removing device A Afterwards, refrigerant is undergone phase transition as compressor 1 is flowed into after gaseous state, enters back into condenser 2 after being compressed by compressor 1, and with from molten The solution heat exchange flowed out in liquid regenerator B, gaseous refrigerant is condensed.Refrigerant continues flow through expansion valve 3 afterwards, and finally flows Evaporator 4 is back to, whole heat pump cycle processing procedure is completed.
Embodiment two：
As shown in Fig. 2 the present embodiment and the difference of embodiment one are：No longer set in fresh air units at different levels There is an assisted solution dehumidifier C, and an assisted solution dehumidifier C is provided only with whole Fresh air handing unit, it is arranged on the One-level fresh air unit I solution moisture removing device A front, the connection composition dehumidifying of the solution circulation pumps 5 of assisted solution dehumidifier C mono- Solution circulation loop in device, assisted solution dehumidifier C is connected composition solution with fresh air unit I at different levels solution regenerator B Circulation loop.
The operation principle of the Fresh air handing unit of the present embodiment is (to include two-stage fresh air unit I fresh air processor Illustrate the present embodiment exemplified by group), the difference only on the setting on assisted solution dehumidifier C, as shown in Fig. 2 fresh air according to It is secondary to flow through assisted solution dehumidifier C, two-stage fresh air unit I solution moisture removing device A, surface cooler 7.Flowed by solution regenerator B The fraction solution gone out is co-flowed into auxiliary dehumidifier C；Two parts are then divided into by the auxiliary dehumidifier C solution flowed out, flowed respectively Enter two-stage fresh air unit I solution regenerator B.
For solution inside solution moisture removing device A, inside solution regenerator B, solution moisture removing device A and solution regenerator B it Between cyclic process, heat pump cycle process, the processing procedure of regeneration air etc. is then identical with embodiment one.
The present invention is only illustrated with above-described embodiment, and structure, set location and its connection of each part are all to have Changed, on the basis of technical solution of the present invention, all improvement carried out according to the principle of the invention to individual part and equivalent Conversion, should not be excluded outside protection scope of the present invention.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510063468.XA CN104654479B (en) | 2015-02-06 | 2015-02-06 | A kind of heat pump driven multi-stage solution dehumidifying Fresh air handing unit |
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| CN201510063468.XA CN104654479B (en) | 2015-02-06 | 2015-02-06 | A kind of heat pump driven multi-stage solution dehumidifying Fresh air handing unit |
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| CN105805868B (en) * | 2016-03-28 | 2018-08-17 | 上海交通大学 | Regenerate backheat dehumidifying heat pump system and its operation method |
| CN105757836B (en) * | 2016-03-28 | 2018-10-19 | 上海交通大学 | Dehumidification regeneration system heat pump system based on dehumidification heat exchange and its operation method |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100226679B1 (en) * | 1996-05-27 | 1999-11-01 | 윤수규 | Chamber with heat pump system used for both drying and refrigerating |
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Patent Citations (6)
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| CN201582927U (en) * | 2009-11-26 | 2010-09-15 | 佛山市浩特普尔人工环境设备有限公司 | Coupling counterflow-type solution dehumidification fresh air system of heat pump |
| CN101846369A (en) * | 2010-05-12 | 2010-09-29 | 清华大学 | Heat recovery solution dehumidifying fresh air handling unit |
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