CN110360833A - A kind of varying duty dehumidifying heat pump drying system - Google Patents
A kind of varying duty dehumidifying heat pump drying system Download PDFInfo
- Publication number
- CN110360833A CN110360833A CN201910699297.8A CN201910699297A CN110360833A CN 110360833 A CN110360833 A CN 110360833A CN 201910699297 A CN201910699297 A CN 201910699297A CN 110360833 A CN110360833 A CN 110360833A
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- Prior art keywords
- evaporator
- condenser
- heat pump
- compressor
- varying duty
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- 238000001035 drying Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000007791 dehumidification Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention is a kind of varying duty dehumidifying heat pump drying system, the system include high temperature heat pump subsystem and with high temperature heat pump subsystem concatenated varying duty depth dehumidifying subsystem, the high temperature heat pump subsystem includes circulating fan, circulating fan drives to form air duct, the air inlet in the air duct forms thermal medium by the first driven compressor and recycles to the first evaporator and the first condenser, the first evaporator and the first condenser is successively arranged between air outlet；The varying duty depth dehumidifying subsystem includes the second evaporator and the second condenser, second evaporator and the second condenser are sequentially connected in series between the first evaporator and the first condenser, and the second evaporator and the second condenser form thermal medium by the second driven compressor and recycle.The present invention can Multi-stage cooling dehumidifying and Multi-stage heating, carry out depth dehumidifying, while providing highest ventilation temperature, two systems adaptability and modulability are good, can work in best, peak efficiency operation interval.
Description
Technical field
The present invention relates to varying duty dehumidifying heat pump dryer technical fields, and in particular to a kind of varying duty dehumidifying heat pump drying
System.
Background technique
Heat pump dryer is widely used in the drying of medicinal material, food, agricultural product, electronic product etc., has energy conservation, ring
The advantages that guarantor, flash baking, low temperature drying.But current heat pump drying equipment is mainly used for heating, but universal heating temperature is not high.
It cannot be used for dehumidifying, once the water capacity of extraneous relative humidity variations meeting extreme influence drying system air inlet, thus extreme influence
Drying effect causes Drying Rates to reduce.Current dehumidification mode generallys use independent humidity control system, disadvantage major embodiment
In: the dehumidifying effect of fresh air dehumidification is insufficient or load variations are too big, and energy consumption is high, and crew qiting is difficult, and operating condition changes adaptibility to response
It is weak, a large amount of condensation heat direct emissions in dehumidification process, energy consumption height.
Summary of the invention
The object of the present invention is to overcome the problems of the prior art, provides a kind of varying duty dehumidifying heat pump drying system
System improves drying efficiency, drop to solve the problems, such as dehumidifying, energy-saving heating problem, the preparation of unit difficulty, condensing units Utilizing question
Low energy consumption improves equipment dependability.
To realize above-mentioned technical purpose and the technique effect, the invention is realized by the following technical scheme:
A kind of varying duty dehumidifies heat pump drying system, the system include high temperature heat pump subsystem and with high temperature heat pump
The varying duty depth dehumidifying subsystem of Cascade System, in which:
The high temperature heat pump subsystem includes circulating fan, and the circulating fan drives to form air duct, the air inlet in the air duct
To the first evaporator and the first condenser is successively arranged between air outlet, first evaporator and the first condenser are by the first pressure
Contracting machine drives to form thermal medium circulation, is cooled and heated respectively；
The varying duty depth dehumidifying subsystem includes the second evaporator and the second condenser, second evaporator and second
Condenser is sequentially connected in series between the first evaporator and the first condenser, and second evaporator and the second condenser are by the second pressure
Contracting machine drives to form thermal medium circulation, is cooled and heated respectively.
Further, increasing enthalpy system is equipped in the high temperature heat pump subsystem, the increasing enthalpy system includes Intermediate Heat Exchanger
Pass through the first runner connection in the first expansion valve and Intermediate Heat Exchanger with the inlet of the second expansion valve, first evaporator
The liquid outlet of liquid storage device, the inlet of the liquid storage device are connected to the liquid outlet of the first condenser, the air inlet of first condenser
One entry/exit port of mouth the first compressor of connection, another entry/exit port of first compressor are connected to going out for the first evaporator
Port.
Further, the liquid outlet of the liquid storage device passes through the second flow channel connection in the second expansion valve and Intermediate Heat Exchanger
The air inlet of first compressor.
Further, an entry/exit port of second compressor is connected to the gas outlet of the second evaporator, the second compressor
Another entry/exit port be connected to the air inlet of the second condenser, the liquid outlet of second condenser connected by third expansion valve
The inlet of logical second evaporator.
Further, second compressor be varying duty compressor, second compressor, two entry/exit ports it
Between be parallel with load adjusting valve, for adjusting the output of the second compressor.
The beneficial effects of the present invention are:
The present invention can Multi-stage cooling dehumidifying and Multi-stage heating, make full use of two systems to cooperate, reach depth dehumidifying
Purpose, while highest ventilation temperature being provided, highest evaporating temperature can achieve 40 DEG C, and condensation temperature can achieve 85 DEG C or more,
Two systems adaptability and modulability are good simultaneously, can work in best, peak efficiency operation interval.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Figure label explanation: A, baking oven, B, air inlet, C, the first evaporator, D, the second evaporator, E, the second condenser,
F, circulating fan, G, baking oven exhaust outlet, H, baking oven air inlet, I, liquid storage device, J, Intermediate Heat Exchanger, K, the first expansion valve, L,
Two expansion valves, M, the first compressor, N, the first condenser, O, discharge outlet, P, water accumulating disc, Q, third expansion valve, R, the second compression
Machine, S, load adjusting valve.
Specific embodiment
It is below with reference to the accompanying drawings and in conjunction with the embodiments, next that the present invention will be described in detail.
Shown in referring to Fig.1, a kind of varying duty dehumidifies heat pump drying system, the system include high temperature heat pump subsystem and
It further include in the present embodiment baking oven A with the concatenated varying duty depth dehumidifying subsystem of the high temperature heat pump subsystem, in which:
The high temperature heat pump subsystem includes circulating fan F, and the circulating fan F drives to form air duct, the air inlet in the air duct
Mouthful B is to being successively arranged the first evaporator C and the first condenser N, the air outlet and baking oven air inlet H in the air duct between air outlet
Connection is discharged after baking oven A by baking oven exhaust outlet G, and the first evaporator C and the first condenser N are driven by the first compressor M
It is dynamic to form thermal medium circulation, it is cooled and heated respectively, when the first compressor M works, drives thermal medium in the first condenser N
Middle liquidation exothermic reaction, driving thermal medium vaporizes heat absorption in the first evaporator C, and by respective line thermal medium is followed
Ring；
Varying duty depth dehumidifying subsystem include the second evaporator D and the second condenser E, the second evaporator D and
Second condenser E is sequentially connected in series between the first evaporator C and the first condenser N, the second evaporator D and the second condenser
E is driven by the second compressor R forms thermal medium circulation, is cooled and heated respectively, when the second compressor R works, driving heat
Medium liquidation exothermic reaction in the second condenser E, driving thermal medium vaporizes heat absorption in the second evaporator D, and passes through respective line
So that thermal medium is recycled.
Increasing enthalpy system is equipped in the high temperature heat pump subsystem, the increasing enthalpy system includes that Intermediate Heat Exchanger J and second are swollen
The inlet of swollen valve L, the first evaporator C are connected to liquid storage by the first runner in the first expansion valve K and Intermediate Heat Exchanger J
The liquid outlet of device I, the inlet of the liquid storage device I are connected to the liquid outlet of the first condenser N, the air inlet of the first condenser N
An entry/exit port of the first compressor M of mouth connection, another entry/exit port of the first compressor M are connected to the first evaporator C
Gas outlet.
The liquid outlet of the liquid storage device I passes through the first pressure of second flow channel connection in the second expansion valve L and Intermediate Heat Exchanger J
The air inlet of contracting machine M, in the present embodiment, with the not mass transfer that conducts heat between the first runner and second flow channel in Intermediate Heat Exchanger J
Setting is isolated in mode, and the contrary setting of the gas/liquid flow in first runner and second flow channel；Liquid storage device I storage refrigeration
Agent adjusts charging amount, and the refrigerant liquid come out from liquid storage device I is divided into two-way, flows through the second expansion valve L, intermediate heat exchange all the way
Device J absorbs the refrigerant heat that another way flows through Intermediate Heat Exchanger J, is equivalent to and cools down again to another way refrigerant, absorbs
Become refrigerant vapour after heat into the first compressor M, promotes the first compressor M suction temperature, it is final to promote compressor M row
Temperature degree, to improve the heat supply temperature of entire high temperature heat pump subsystem.
An entry/exit port of the second compressor R is connected to the gas outlet of the second evaporator D, and the second compressor R's is another
Entry/exit port is connected to the air inlet of the second condenser E, and the liquid outlet of the second condenser E passes through third expansion valve Q connection the
The inlet of two evaporator D.
In the present embodiment, it is equipped with water accumulating disc (P) below the first evaporator C and the second evaporator D, for collecting by air
The condensed water that middle moisture content condenses, the water accumulating disc bottom (P) is equipped with discharge outlet (O), for condensed water to be discharged.
The second compressor R is varying duty compressor, in the present embodiment, using digital scroll compressor, described
It is parallel with load adjusting valve S between the second entry/exit port of compressor R two, for adjusting the output of the second compressor R.
The course of work and principle of the present invention
In the present invention, new air inlet enters system from air inlet B, cooling by the first evaporator C, using the second evaporator D's
It cools down again, reaches the lower absolute moisture content of requirement, then flow through the second condenser E, the first condenser N stepped heating,
Temperature gradually rises to desired temperature, baking oven A material drying is entered under the driving of circulating fan F, then exhaust gas is by air draft
Baking oven A is discharged in mouth G；
When inlet air temperature is too low, the heating effect of the first condenser N may be influenced, increasing enthalpy system of the invention can promote
One compressor M suction temperature, it is final to promote compressor M delivery temperature, to improve the heat supply temperature of entire high temperature heat pump subsystem
Degree, it is ensured that system can also be run at low temperature；
When entering the wind load variations, load adjusting valve S is adjusted, to change the fan-out capability of the second compressor R, to adjust system
Refrigerated dehumidification load, it is ensured that system does not freeze, and can continue working, and keeps stable air-supply condition.
In addition, it should be noted that, unless stated otherwise or point out, the otherwise term " first " in specification, "
Two ", the descriptions such as " third " are used only for distinguishing various components, element, the step etc. in specification, each without being intended to indicate that
Component, element, the logical relation between step or ordinal relation etc..
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
- The heat pump drying system 1. a kind of varying duty dehumidifies, which is characterized in that the system include high temperature heat pump subsystem and with institute State the concatenated varying duty depth dehumidifying subsystem of high temperature heat pump subsystem, in which:The high temperature heat pump subsystem includes circulating fan (F), and circulating fan (F) driving forms air duct, the air duct Air inlet (B) to being successively arranged the first evaporator (C) and the first condenser (N) between air outlet, first evaporator (C) and First condenser (N) forms thermal medium circulation by the first compressor (M) driving, is cooled and heated respectively；The varying duty depth dehumidifying subsystem includes the second evaporator (D) and the second condenser (E), second evaporator (D) it is sequentially connected in series with the second condenser (E) between the first evaporator (C) and the first condenser (N), second evaporator (D) thermal medium is formed by the second compressor (R) driving and is recycled with the second condenser (E), cooled and heated respectively.
- The heat pump drying system 2. varying duty according to claim 1 dehumidifies, which is characterized in that the high temperature heat pump subsystem In be equipped with increasing enthalpy system, the increasing enthalpy system includes Intermediate Heat Exchanger (J) and the second expansion valve (L), first evaporator (C) Liquid outlet of the inlet by first runner connection liquid storage device (I) in the first expansion valve (K) and Intermediate Heat Exchanger (J), institute State the liquid outlet of the inlet connection the first condenser (N) of liquid storage device (I), the air inlet connection the of first condenser (N) One entry/exit port of one compressor (M), another entry/exit port connection the first evaporator (C) of first compressor (M) Gas outlet.
- The heat pump drying system 3. varying duty according to claim 2 dehumidifies, which is characterized in that the liquid storage device (I) goes out The air inlet that liquid mouth passes through the second flow channel connection the first compressor (M) in the second expansion valve (L) and Intermediate Heat Exchanger (J).
- The heat pump drying system 4. varying duty according to claim 1 or 3 dehumidifies, which is characterized in that second compressor (R) gas outlet of entry/exit port connection the second evaporator (D), another entry/exit port connection the of the second compressor (R) The liquid outlet of the air inlet of two condensers (E), second condenser (E) is connected to the second evaporator by third expansion valve (Q) (D) inlet.
- The heat pump drying system 5. varying duty according to claim 4 dehumidifies, which is characterized in that second compressor (R) For varying duty compressor, it is parallel with load adjusting valve (S) between described second compressor (R), two entry/exit ports, for adjusting Save the output of the second compressor (R).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910699297.8A CN110360833A (en) | 2019-07-31 | 2019-07-31 | A kind of varying duty dehumidifying heat pump drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910699297.8A CN110360833A (en) | 2019-07-31 | 2019-07-31 | A kind of varying duty dehumidifying heat pump drying system |
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| Publication Number | Publication Date |
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| CN110360833A true CN110360833A (en) | 2019-10-22 |
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| CN201910699297.8A Pending CN110360833A (en) | 2019-07-31 | 2019-07-31 | A kind of varying duty dehumidifying heat pump drying system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110895100A (en) * | 2019-12-27 | 2020-03-20 | 上海伯涵热能科技有限公司 | Heat pump unit adopting variable-frequency heat pump subsystem, tobacco leaf baking device and method |
| CN112607998A (en) * | 2020-11-30 | 2021-04-06 | 广东申菱环境系统股份有限公司 | Drying system and sludge drying equipment |
| CN113819750A (en) * | 2021-07-21 | 2021-12-21 | 广东申菱环境系统股份有限公司 | Heat pump drying unit with sterilization function and control method thereof |
| CN114935174A (en) * | 2022-01-10 | 2022-08-23 | 西安四腾环境科技有限公司 | Modular air conditioning unit for variable-grade clean operating room |
| CN115900313A (en) * | 2022-11-16 | 2023-04-04 | 江西清华泰豪三波电机有限公司 | Double-evaporator large condensation heat recovery heat pump dryer and control method thereof |
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| CN110895100A (en) * | 2019-12-27 | 2020-03-20 | 上海伯涵热能科技有限公司 | Heat pump unit adopting variable-frequency heat pump subsystem, tobacco leaf baking device and method |
| CN112607998A (en) * | 2020-11-30 | 2021-04-06 | 广东申菱环境系统股份有限公司 | Drying system and sludge drying equipment |
| CN113819750A (en) * | 2021-07-21 | 2021-12-21 | 广东申菱环境系统股份有限公司 | Heat pump drying unit with sterilization function and control method thereof |
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| CN114935174A (en) * | 2022-01-10 | 2022-08-23 | 西安四腾环境科技有限公司 | Modular air conditioning unit for variable-grade clean operating room |
| CN115900313A (en) * | 2022-11-16 | 2023-04-04 | 江西清华泰豪三波电机有限公司 | Double-evaporator large condensation heat recovery heat pump dryer and control method thereof |
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