CN110864514A - Multistage coupling closed drying heat pump system with dynamic cold and hot balance adjustment function - Google Patents
Multistage coupling closed drying heat pump system with dynamic cold and hot balance adjustment function Download PDFInfo
- Publication number
- CN110864514A CN110864514A CN201911348758.3A CN201911348758A CN110864514A CN 110864514 A CN110864514 A CN 110864514A CN 201911348758 A CN201911348758 A CN 201911348758A CN 110864514 A CN110864514 A CN 110864514A
- Authority
- CN
- China
- Prior art keywords
- air
- heat
- cold
- dehumidifier
- evaporator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001035 drying Methods 0.000 title claims abstract description 65
- 230000008878 coupling Effects 0.000 title claims abstract description 17
- 238000010168 coupling process Methods 0.000 title claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 111
- 238000007710 freezing Methods 0.000 claims abstract description 6
- 230000008014 freezing Effects 0.000 claims abstract description 6
- 239000003507 refrigerant Substances 0.000 claims description 29
- 238000004146 energy storage Methods 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 10
- 239000000523 sample Substances 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 2
- 238000004540 process dynamic Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000007791 dehumidification Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
-
- 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
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- 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
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
-
- 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
- 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
- F26B21/10—Temperature; Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
Abstract
The invention discloses a dynamic cold and heat balance adjustment multistage coupling closed drying heat pump system, which consists of a heat pump unit, a freezing water system and an evaporator, wherein the heat pump unit comprises a compressor, a condenser, a throttling element and the evaporator. The invention innovatively provides a freezing water system and an auxiliary cold/heat source system, can realize the dynamic cold and heat balance adjustment of the heat pump drying unit in the whole process through the design and operation layers, has good system stability and strong practicability, and the load can be continuously changed along with the state of the material in the drying process.
Description
Technical Field
The invention relates to the technical field of heat pump units, in particular to a multistage coupling closed drying heat pump system with dynamic cold and heat balance adjustment.
Background
China is a big agricultural country, agricultural and sideline products, food, wood, medicinal materials and the like are often required to be dried and stored, and the drying of materials is an important link in the processing process of the materials. But drying is a high energy-consuming process, and the energy utilization rate of the traditional drying technology is low, which is only about 35%. In recent years, the heat pump drying technology has attracted attention due to the advantages of high efficiency, energy conservation, closed circulation of drying media, environmental friendliness and the like, and is fully developed, popularized and applied.
The heat pump drying technology is based on the inverse Carnot cycle principle, utilizes an evaporator to cool and dehumidify the circulated air, and utilizes a condenser to heat and heat, thereby finally achieving the purpose of drying materials. It is known that the heat load and the humidity load of the material can change in the actual drying process, so that the uneven distribution of the cold and heat load of the unit is difficult to balance. At present conventional heat pump drying unit is mostly the formula of directly expanding, and the unit is difficult to satisfy cold and heat demand adaptability simultaneously poor to cold and hot distribution inequality, can only guarantee drying temperature at application scope through shutting down, uninstallation or steam are arranged outward, leads to the unit frequently to open and stop or low efficiency operation, increases the operation energy consumption, and the air temperature and humidity that also can make the baking house simultaneously fluctuates greatly.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a dynamic cold-heat balance adjustment multistage coupling closed drying heat pump system.
In order to achieve the purpose, the invention adopts the following technical scheme: a multi-stage coupling closed drying heat pump system based on dynamic cold and heat balance adjustment comprises a heat pump unit, a freezing water system and an evaporator;
the heat pump unit system comprises a compressor, a condenser, a throttling element and an evaporator, wherein a high-temperature and high-pressure gas refrigerant compressed by the compressor enters a condenser heat exchange tube of the condenser through an exhaust pipe, exchanges heat with dry and cold air flowing through a condenser fin of the condenser, flows into the throttling element for throttling after being condensed into high-pressure liquid, enters an evaporator heat exchange tube of the evaporator through a liquid pipe for evaporation, absorbs the heat of chilled water flowing in the evaporator to become a low-pressure gas refrigerant, and then enters the compressor through an air return pipe for cyclic compression;
the refrigerated water system, including energy storage water tank, the evaporimeter, the dehumidifier, the refrigerated water of storage at energy storage water tank, go into the evaporimeter through first water pump, with the inflow evaporimeter, the refrigerant in the evaporimeter heat exchange tube carries out the heat transfer, the cold volume of refrigerated water is absorbed in the refrigerant evaporation, the refrigerated water after the cooling flows out the evaporimeter, through the refrigerated water supply pipe line that communicates with the evaporimeter in the dehumidifier heat exchange tube of dehumidifier, the circulation absorbs and rotates through the dehumidification fan, the heat of the humid air of forced flow dehumidifier fin surface, the dehumidification of humid air cooling becomes dry cold air, and absorb the humid air heat, the refrigerated water after the intensification then flows out the dehumidifier, flow into the energy storage water tank through the refrigerated water back flow and store.
The utility model discloses a drying room, including heat pump set and refrigerated water system, the refrigerated water system of heat pump set and refrigerated water system sharing evaporimeter, in the evaporimeter, evaporate through the heat pump set refrigerant, absorb the heat of refrigerated water system, reduce the refrigerated water temperature, the refrigerated water of cooling down gets into in the dehumidifier, absorb the humid air heat on the dehumidifier fin surface that flows through the dehumidifier, after the humid air is absorbed the heat and reduced the humiture, become dry and cold air, dry and cold air flows through the condenser, absorb refrigerating system's high temperature high-pressure gas refrigerant heat, send into the drying room stoving product of placing the needs stoving product after the improvement temperature.
As a further description of the above technical solution:
the evaporator can be a plate heat exchanger, a shell and tube heat exchanger, a double-pipe heat exchanger or a heat exchange water tank with a built-in heat exchange tube.
As a further description of the above technical solution:
the energy storage water tank is also externally connected with an auxiliary cold/heat source system, and the temperature of the chilled water stored in the energy storage water tank is regulated and controlled through the auxiliary cold/heat source system.
As a further description of the above technical solution:
the heat pump unit is also provided with an air supply duct and an air inlet duct, the outside wet air to be processed firstly enters the dehumidifier through the air inlet duct, runs through the dehumidifying fan and forcibly flows through the outer surface of the dehumidifier fin of the dehumidifier, forcibly exchanges heat with the chilled water flowing through the heat exchange tube of the dehumidifier, the wet air is changed into dry and cold air after being cooled and dehumidified and flows out of the dehumidifier, through the air supply duct, and finally, the air forcibly flows through the outer surface of the condenser fin of the condenser under the rotation of the condensing fan, forcibly exchanges heat with a high-temperature and high-pressure gas refrigerant flowing in a heat exchange tube of the condenser, the high-temperature and high-pressure gas refrigerant is changed into a high-pressure liquid refrigerant after releasing heat, the dry and cold air absorbing heat raises the temperature and finally flows out of the condenser, and finally flows into the drying room through the air outlet pipe to absorb the moisture of the dried articles, thereby achieving the purpose of drying the dried articles.
As a further description of the above technical solution:
the drying device is characterized by further comprising a mixing air pipe and a mixing section, outside air passes through the mixing air pipe and enters the air supply duct to be mixed in the mixing section, and after air parameters after mixing reach required values, the air parameters enter the condenser to be heated, and finally flow into a drying room through the air outlet pipe.
As a further description of the above technical solution:
the air for drying the dried articles absorbs the moisture of the dried articles, so that the humidity of the air is increased, and when the damp and hot air needs to be exhausted, the damp and hot air is forcibly exhausted into the external atmospheric environment through the heat exhaust fan; if the wet hot air and the dry cold air are required to be mixed in the mixing section, opening the 1 st air valve, closing the 2 nd air valve, enabling the wet hot air to flow into the mixing air pipe through the return air duct, finally entering the mixing section to be mixed with the dry cold air, and adjusting the opening size of the 1 st air valve to adjust the flow rate of the wet hot air; when the humid air in the external environment is needed, the 1 st air valve is closed, the 2 nd air valve is opened, the humid air in the external environment passes through the fresh air duct, the 2 nd air valve flows into the mixed air duct, and finally enters the mixed section to be mixed with the dry and cold air, and similarly, the flow of the humid air in the external environment can be adjusted by adjusting the opening size of the 2 nd air valve.
As a further description of the above technical solution:
and the energy storage water tank is also provided with a water temperature probe, a second water pump and an auxiliary heat source water inlet pipe.
Advantageous effects
The invention provides a dynamic cold and hot balance adjustment multistage coupling closed drying heat pump system, which has the following beneficial effects:
(1) the refrigeration water system and the auxiliary cold/heat source system are innovatively designed, the dynamic cold and heat balance adjustment of the heat pump drying unit in the whole process can be realized through the design and operation layer, the system stability is good, and the practicability is high;
(2) the load can change along with the state of the material continuously in the drying process, and the freezing water system and the auxiliary cold/heat source system provided by the invention can be dynamically adjusted according to the cold and heat load requirements, and have strong flexibility and wider adjustment range compared with the traditional closed drying heat pump system;
(3) the refrigerating water system and the auxiliary cold/heat source system provided by the invention can fully utilize redundant energy of the system, realize the maximization of the energy utilization efficiency and have important energy-saving prospects.
Drawings
Fig. 1 is a working schematic diagram of a multistage coupling closed drying heat pump system with dynamic cold and heat balance adjustment according to the present invention.
Fig. 2 is a schematic diagram of drying processing by using the multi-stage coupled closed drying heat pump system with dynamic cold and heat balance adjustment of the invention.
Description of the drawings:
1. a dehumidifier; 11. an air inlet duct; 12. a heat exchange pipe of the dehumidifier; 13. a dehumidifier fin; 14. a dehumidifying fan; 15. an air supply duct; 16. a chilled water return pipe; 17. a chilled water supply pipe; 2. an evaporator; 21. an evaporator heat exchange tube; 3. a throttling element; 31. a liquid pipe; 4. an energy storage water tank; 41. a first water pump; 42. a water temperature probe; 43. a second water pump; 44. an auxiliary heat source water inlet pipe; 5. a compressor; 51. an air return pipe; 52. an exhaust pipe; 6. a condenser; 61. a condenser heat exchange tube; 62. condenser fins; 63. a condensing fan; 64. an air outlet pipe; 65. a mixed air duct; 66. a mixing section; 7. a drying room; 71. a heat exhausting fan; 72. drying the articles; 73. an air return duct; 74. 1 st blast gate; 8. a 2 nd air valve; 81. fresh air duct.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, a multi-stage coupling closed drying heat pump system for dynamic cold and heat balance adjustment, which is composed of a heat pump unit, a freezing water system and an evaporator 2;
the heat pump unit system comprises a compressor 5, a condenser 6, a throttling element 3 and an evaporator 2, wherein a high-temperature and high-pressure gas refrigerant compressed by the compressor 5 enters a condenser heat exchange tube 61 of the condenser 6 through an exhaust pipe 52, exchanges heat with dry cold air flowing through a condenser fin 62 of the condenser 6, is condensed into high-pressure liquid, flows into the throttling element 3 for throttling, enters an evaporator heat exchange tube 21 of the evaporator 2 through a liquid pipe 31 for evaporation, absorbs the heat of chilled water flowing in the evaporator 2 to become a low-pressure gas refrigerant, and then enters the compressor 5 through an air return pipe 51 for cyclic compression;
the chilled water system comprises an energy storage water tank 4, an evaporator 2 and a dehumidifier 1, chilled water stored in the energy storage water tank 4 is pumped into the evaporator 2 through a first water pump 41 and flows into the evaporator, heat exchange is carried out on refrigerant in an evaporator heat exchange tube 21, the refrigerant evaporates and absorbs cold energy of the chilled water, the chilled water after cooling flows out of the evaporator 2, the chilled water flows into a dehumidifier heat exchange tube 12 of the dehumidifier 1 through a chilled water supply tube 17 pipeline communicated with the evaporator 2, the refrigerant circularly absorbs heat of humid air flowing through a dehumidifying fan 14, the heat of the humid air flowing through the outer surface of a dehumidifier fin 13 forcibly, the humid air is cooled and dehumidified to become dry and cold air, the humid air is absorbed, the chilled water after heating flows out of the dehumidifier 1 and flows into the energy storage water tank 4 through a chilled water return tube 16 to be stored.
The heat pump unit and the chilled water system share the evaporator 2, in the evaporator 2, heat of the chilled water system is absorbed through evaporation of a heat pump unit refrigerant, the temperature of chilled water is reduced, chilled water with the reduced temperature enters the dehumidifier 1, heat of wet air flowing through the surface of the dehumidifier fins 13 of the dehumidifier 1 is absorbed, the wet air is changed into dry and cold air after being subjected to heat absorption and temperature and humidity reduction, the dry and cold air flows through the condenser 6, heat of a high-temperature and high-pressure gas refrigerant of the refrigerating system is absorbed, the temperature is increased, and then the dry and cold air is sent into the drying room 7 where products to be dried are placed, and the products.
The evaporator 2 can be a plate heat exchanger, a shell and tube heat exchanger, a double-pipe heat exchanger or a heat exchange water tank with a built-in heat exchange pipe, and is suitable for different occasions with different requirements on the types of evaporators.
The energy storage water tank 4 is also externally connected with an auxiliary cold/heat source system, and the temperature of the chilled water stored in the energy storage water tank 4 is regulated and controlled through the auxiliary cold/heat source system.
The heat pump unit is also provided with an air supply duct 15 and an air inlet duct 11, the outside wet air to be processed firstly enters the dehumidifier 1 through the air inlet duct 11, runs through the dehumidifying fan 14, forcibly flows through the outer surface of the dehumidifier fins 13 of the dehumidifier 1, forcibly exchanges heat with the chilled water flowing through the dehumidifier heat exchange tubes 12 of the dehumidifier 1, becomes dry and cold air after being cooled and dehumidified, flows out of the dehumidifier 1, passes through the air supply duct 15, finally forcibly flows through the outer surface of the condenser fins 62 of the condenser 6 under the rotation of the condensing fan 63, forcibly exchanges heat with the high-temperature high-pressure gas refrigerant flowing through the condenser heat exchange tubes 61, becomes high-pressure liquid refrigerant after releasing heat, and the dry and cold air absorbing heat raises the temperature, finally flows out of the condenser 6, and finally flows into the drying room 7 through the air outlet duct 64, absorb the moisture of the drying object 72 to achieve the purpose of drying the drying object 72.
The drying device is characterized by further comprising a mixing air pipe 65 and a mixing section 66, outside air enters the mixing section 66 on the air supply duct 15 through the mixing air pipe 65 to be mixed, and after the mixed air parameters reach required values, the mixed air enters the condenser 6 to be heated, and finally flows into the drying room 7 through the air outlet pipe 64.
The air for drying the drying object 72, because of absorbing the moisture of the drying object 72, the air humidity is increased, when the humid and hot air needs to be exhausted, the air is forcibly exhausted to the external atmosphere environment through the heat exhausting fan 71; if the wet hot air and the dry cold air are required to be mixed in the mixing section 66, the 1 st air valve 74 is opened, the 2 nd air valve 8 is closed, the wet hot air flows into the mixing air duct 65 through the return air duct 73 and finally enters the mixing section 66 to be mixed with the dry cold air, and the flow rate of the wet hot air can be adjusted by adjusting the opening size of the 1 st air valve 74; when the humid air in the external environment is needed, the 1 st air valve 74 is closed, the 2 nd air valve 8 is opened, the humid air in the external environment passes through the fresh air duct 81, the 2 nd air valve 8 flows into the mixed air duct 65, finally enters the mixing section 66 to be mixed with the dry and cold air, and similarly, the flow of the humid air in the external environment can be adjusted by adjusting the opening size of the 2 nd air valve 8.
The energy storage water tank 4 is also provided with a water temperature probe 42, a second water pump 43 and an auxiliary heat source water inlet pipe 44.
(1) According to the characteristics of the dried materials and the requirements of the drying process, a change rule model of the dehumidification load Qc of the dehumidifier 1 is established, namely Qc is f1(ma, phi and Ta '), wherein phi is the water content of the materials (phi is d/d0, wherein d0 is the water content of the initial state of the materials, d is the water content of the current state of the materials), Ta' is the air temperature of the drying room, and ma is the flow rate of circulating air;
(2) according to the material dehumidification process requirement, establishing a change model of the dehumidification cooling temperature Te under different water contents in the material dehumidification process, namely Te (f 2 (phi));
(3) the water temperature probe 42 provided in the energy storage tank 4 detects the control temperature, and sets the differential range 1oC of temperature control according to the model Tw1 ═ f5(Qc, Te), and performs PID control by the upper controller, thereby achieving the cold-heat balance. On the one hand, when the temperature is lower than the set temperature, the auxiliary cold/heat source system is started, the chilled water is circularly pumped into the auxiliary heat source system through the water pump 43, the heat provided by the auxiliary cold/heat source system is absorbed, and then the chilled water flows into the energy storage water tank 4 through the auxiliary cold/heat source water inlet pipe 44 until the chilled water reaches the required temperature. On the other hand, when the water temperature probe 42 detects that the chilled water temperature is higher than the set water temperature, the air conditioning unit is started to absorb the cold energy of the chilled water, and after the chilled water temperature is reduced to reach the set value, the chilled water enters the dehumidifier 1 through the chilled water supply pipe 17 to absorb the heat of the humid air, and the air temperature and humidity are reduced until the required air parameters are reached.
To precisely control the mixed air parameters to suit the air parameters required to dry the articles 72 during different drying stages, the flow rate of the external air entering the mixing section 66 may be further adjusted to adjust the mixing ratio of the external air to the dry and cool air to provide the optimum air parameters required to dry the articles 72.
In order to provide suitable mixing of the outside air and the dry and cold air under different seasonal temperature conditions, and save energy, furthermore, the outside air is humid air in the outside atmospheric environment, or humid and hot air returned by the drying object 72, and the required mixing amount of the outside humid air and the amount of the humid air returned by the drying object 72 can be determined according to different climatic conditions and the type of the drying object 72 processed.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A multi-stage coupling closed drying heat pump system with dynamic cold and heat balance adjustment is characterized in that the multi-stage coupling closed drying heat pump system based on the whole-process dynamic cold and heat balance adjustment is composed of a heat pump unit, a freezing water system and an evaporator (2);
the heat pump unit system comprises a compressor (5), a condenser (6), a throttling element (3) and an evaporator (2), wherein a high-temperature and high-pressure gas refrigerant compressed by the compressor (5) enters a condenser heat exchange tube (61) of the condenser (6) through an exhaust tube (52) and exchanges heat with dry and cold air flowing through a condenser fin (62) of the condenser (6), the high-temperature and high-pressure gas refrigerant is condensed into high-pressure liquid, flows into the throttling element (3) for throttling and then enters an evaporator heat exchange tube (21) of the evaporator (2) through a liquid tube (31) for evaporation, and the high-temperature and high-pressure gas refrigerant absorbs heat of chilled water flowing in the evaporator (2), is changed into a low-pressure gas refrigerant and then enters the compressor (5) through a gas return tube (;
the chilled water system comprises an energy storage water tank (4), an evaporator (2), a dehumidifier (1) and chilled water stored in the energy storage water tank (4), is pumped into the evaporator (2) through a first water pump (41) to exchange heat with the refrigerant flowing into the evaporator heat exchange tube (21) of the evaporator (2), the refrigerant evaporates and absorbs the cold energy of the chilled water, the chilled water after temperature reduction flows out of the evaporator (2), flows into a dehumidifier heat exchange pipe (12) of a dehumidifier (1) through a chilled water supply pipe (17) which is communicated with the evaporator (2), circularly absorb the heat of the wet air which is rotated by the dehumidifying fan (14) and forcibly flows through the outer surface of the dehumidifier fin (13), the wet air is cooled and dehumidified to be changed into dry and cold air, and the chilled water absorbing the heat of the humid air after being heated flows out of the dehumidifier (1) and flows into the energy storage water tank (4) through the chilled water return pipe (16) to be stored.
Heat pump set and refrigerated water system sharing evaporimeter (2), in evaporimeter (2), evaporate through the heat pump set refrigerant, absorb refrigerated water system's heat, reduce the refrigerated water temperature, the refrigerated water of lowering the temperature gets into in dehumidifier (1), absorb the humid air heat that flows through dehumidifier fin (13) surface of dehumidifier (1), after the humid air is absorbed heat and reduces the humiture, become dry and cold air, dry and cold air flows condenser (6), absorb refrigerating system's high temperature high-pressure gas refrigerant heat, send into stoving room (7) of placing needs stoving product after the increase in temperature, the stoving product.
2. The multistage coupling closed drying heat pump system with dynamic cold and heat balance adjustment according to claim 1, wherein the evaporator (2) can be a plate heat exchanger, a shell and tube heat exchanger, a double pipe heat exchanger, or a heat exchange water tank with built-in heat exchange tubes.
3. The multistage coupling closed drying heat pump system with dynamic cold and heat balance adjustment as claimed in claim 1, wherein the energy storage water tank (4) is further externally connected with an auxiliary cold/heat source system, and the temperature of the chilled water stored in the energy storage water tank (4) is regulated and controlled by the auxiliary cold/heat source system.
4. The multistage coupling closed drying heat pump system with dynamic cold-heat balance adjustment according to claim 1, wherein the heat pump unit further comprises an air supply duct (15) and an air inlet duct (11), the external wet air to be processed firstly enters the dehumidifier (1) through the air inlet duct (11), and is forced to flow through the outer surface of the dehumidifier fins (13) of the dehumidifier (1) by the operation of the dehumidifying fan (14), and is forced to exchange heat with the chilled water flowing through the heat exchange tubes (12) of the dehumidifier (1), the wet air is cooled and dehumidified to become dry and cold air, and after flowing out of the dehumidifier (1), is forced to flow through the outer surface of the condenser fins (62) of the condenser (6) by the air supply duct (15), and finally is forced to exchange heat with the high-temperature and high-pressure gas refrigerant flowing through the heat exchange tubes (61) of the condenser by the rotation of the condensing fan (63), the high-temperature high-pressure gas refrigerant becomes high-pressure liquid refrigerant after releasing heat, and the dry and cold air absorbing heat raises the temperature and finally flows out of the condenser (6), finally flows into the drying room (7) through the air outlet pipe (64), absorbs the moisture of the dried articles (72), and achieves the purpose of drying the dried articles (72).
5. The multistage coupling closed drying heat pump system with the dynamic cold and heat balance adjustment function according to claim 1, further comprising a mixing air duct 65 and a mixing section (66), wherein outside air enters the mixing section (66) of the air supply duct (15) through the mixing air duct (65) to be mixed, and after the mixed air parameter reaches a required value, the mixed air enters the condenser (6) to be heated, and finally flows into the drying room (7) through the air outlet duct (64).
6. The multistage coupling closed drying heat pump system with dynamic cold and heat balance adjustment as claimed in claim 1, wherein the air for drying the drying object (72) is increased in humidity due to the moisture absorbed by the drying object (72), and is forcibly exhausted to the external atmosphere environment by the heat exhausting fan (71) when the wet and hot air needs to be exhausted; if the wet air and the dry and cold air are required to be mixed in the mixing section (66), opening the 1 st air valve (74), closing the 2 nd air valve (8), enabling the wet and hot air to flow into the mixing air pipe (65) through the return air duct (73), finally entering the mixing section (66) to be mixed with the dry and cold air, and adjusting the opening size of the 1 st air valve (74) to adjust the flow rate of the wet and hot air; when the humid air in the external environment is needed, the 1 st air valve (74) is closed at the moment, the 2 nd air valve (8) is opened, the humid air in the external environment passes through the fresh air duct (81), the 2 nd air valve (8) flows into the mixed air duct (65), finally enters the mixed section (66) to be mixed with the dry and cold air, and similarly, the flow of the humid air in the external environment can be adjusted by adjusting the opening size of the 2 nd air valve (8).
7. The multistage coupling closed drying heat pump system with dynamic cold and heat balance adjustment as claimed in claim 1, wherein a water temperature probe (42), a second water pump (43) and an auxiliary heat source water inlet pipe (44) are further arranged on the energy storage water tank (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911348758.3A CN110864514A (en) | 2019-12-24 | 2019-12-24 | Multistage coupling closed drying heat pump system with dynamic cold and hot balance adjustment function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911348758.3A CN110864514A (en) | 2019-12-24 | 2019-12-24 | Multistage coupling closed drying heat pump system with dynamic cold and hot balance adjustment function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110864514A true CN110864514A (en) | 2020-03-06 |
Family
ID=69659979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911348758.3A Pending CN110864514A (en) | 2019-12-24 | 2019-12-24 | Multistage coupling closed drying heat pump system with dynamic cold and hot balance adjustment function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110864514A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739560A (en) * | 2020-05-29 | 2021-12-03 | 广东芬蓝环境科技有限公司 | Drying system control method and device and drying system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003265889A (en) * | 2002-03-19 | 2003-09-24 | Sanyo Electric Co Ltd | Washing and drying machine |
| JP2003336970A (en) * | 2002-05-16 | 2003-11-28 | Japan Steel Works Ltd:The | Cold air dryer |
| CN103851892A (en) * | 2012-12-06 | 2014-06-11 | 美的集团股份有限公司 | Drying machine |
| CN105066666A (en) * | 2015-07-22 | 2015-11-18 | 合肥淘能环境科技有限公司 | Heat pump drying device with humidity and temperature adjusting function |
| CN105352307A (en) * | 2015-07-01 | 2016-02-24 | 河南佰衡节能科技股份有限公司 | Dehumidification type heat pump drying system provided with bypass air duct |
| CN105605910A (en) * | 2016-02-18 | 2016-05-25 | 郏松筠 | Operation modes and structure of heat-circulation heat pump drying unit |
| CN206146161U (en) * | 2016-08-31 | 2017-05-03 | 南京韩威南冷制冷集团有限公司 | Heat pump constant humidity stoving case is adjusted to new trend |
| CN207778998U (en) * | 2018-01-31 | 2018-08-28 | 苏州苏净安发空调有限公司 | A kind of heat pump dryer with dehumidification function |
| CN108759329A (en) * | 2018-06-28 | 2018-11-06 | 江苏必领能源科技有限公司 | Enclosed dehumidifying water wind-heat pumps more drying chamber drying systems |
| CN211782344U (en) * | 2019-12-24 | 2020-10-27 | 广州能茵热泵科技有限公司 | Multistage coupling closed drying heat pump system with dynamic cold and hot balance adjustment function |
-
2019
- 2019-12-24 CN CN201911348758.3A patent/CN110864514A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003265889A (en) * | 2002-03-19 | 2003-09-24 | Sanyo Electric Co Ltd | Washing and drying machine |
| JP2003336970A (en) * | 2002-05-16 | 2003-11-28 | Japan Steel Works Ltd:The | Cold air dryer |
| CN103851892A (en) * | 2012-12-06 | 2014-06-11 | 美的集团股份有限公司 | Drying machine |
| CN105352307A (en) * | 2015-07-01 | 2016-02-24 | 河南佰衡节能科技股份有限公司 | Dehumidification type heat pump drying system provided with bypass air duct |
| CN105066666A (en) * | 2015-07-22 | 2015-11-18 | 合肥淘能环境科技有限公司 | Heat pump drying device with humidity and temperature adjusting function |
| CN105605910A (en) * | 2016-02-18 | 2016-05-25 | 郏松筠 | Operation modes and structure of heat-circulation heat pump drying unit |
| CN206146161U (en) * | 2016-08-31 | 2017-05-03 | 南京韩威南冷制冷集团有限公司 | Heat pump constant humidity stoving case is adjusted to new trend |
| CN207778998U (en) * | 2018-01-31 | 2018-08-28 | 苏州苏净安发空调有限公司 | A kind of heat pump dryer with dehumidification function |
| CN108759329A (en) * | 2018-06-28 | 2018-11-06 | 江苏必领能源科技有限公司 | Enclosed dehumidifying water wind-heat pumps more drying chamber drying systems |
| CN211782344U (en) * | 2019-12-24 | 2020-10-27 | 广州能茵热泵科技有限公司 | Multistage coupling closed drying heat pump system with dynamic cold and hot balance adjustment function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739560A (en) * | 2020-05-29 | 2021-12-03 | 广东芬蓝环境科技有限公司 | Drying system control method and device and drying system |
| CN113739560B (en) * | 2020-05-29 | 2022-10-25 | 广东芬蓝环境科技有限公司 | Drying system control method and device and drying system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108679747B (en) | Fresh air dehumidifying air conditioning system | |
| CN201285124Y (en) | Vaporization cooling and evaporation condensing combined air-conditioning unit | |
| CN109373480B (en) | Energy-saving purification air-conditioning system combining evaporative cooling and evaporative condensation | |
| CN208595631U (en) | A kind of fresh air dehumidification air-conditioning system | |
| CN208458379U (en) | The enclosed dehumidifying more drying chamber drying systems of water-water heat pump | |
| CN102589273A (en) | Heat pump drying device | |
| CN109405525B (en) | Self-adjusting dehumidifying and drying heat pump system | |
| CN211782344U (en) | Multistage coupling closed drying heat pump system with dynamic cold and hot balance adjustment function | |
| CN206683105U (en) | A kind of compound computer-room air conditioning system of multiple | |
| WO2023088066A1 (en) | Multi-split central air conditioning system for simultaneous cooling and heating | |
| CN113446756A (en) | Four-pipe air source heat pump unit with variable-speed compressor | |
| CN202511591U (en) | Heat pump drying device | |
| CN210070102U (en) | Ground pipe laying water source dehumidification humidification fresh air unit | |
| CN108444278A (en) | Continuous displaced type dehumidifying drying equipment | |
| CN109579337B (en) | Cascade hot air control system and method | |
| WO2022033106A1 (en) | Air conditioning system, air conditioner, and control method for air conditioning system | |
| CN207729787U (en) | A kind of air-conditioning system of achievable temperature and humidity independent control | |
| CN108759329A (en) | Enclosed dehumidifying water wind-heat pumps more drying chamber drying systems | |
| CN113446764A (en) | Independent temperature and humidity control system for plant cabin in severe cold region | |
| CN211041211U (en) | Dehumidifier and drying chamber | |
| CN110864514A (en) | Multistage coupling closed drying heat pump system with dynamic cold and hot balance adjustment function | |
| CN112728695A (en) | Energy-saving air conditioning device capable of accurately controlling air supply temperature and humidity | |
| CN209787920U (en) | Special cooling device for integral energy-saving granary | |
| CN214308097U (en) | Integral vacuum type heat pump drying energy-saving device | |
| CN207527887U (en) | Multiple-energy-source and the grain depot grain heap environmental control system of the cold and hot bidirectional couple of heat pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230111 Address after: 511400 401, No. 34, Pingshan 2nd Road, Zhongcun street, Panyu District, Guangzhou City, Guangdong Province Applicant after: GUANGZHOU LEARNING HEAT PUMP TECHNOLOGY Co.,Ltd. Applicant after: QINGDAO TECHNOLOGICAL University Address before: 511400 401, No. 34, Pingshan 2nd Road, Zhongcun street, Panyu District, Guangzhou City, Guangdong Province Applicant before: GUANGZHOU LEARNING HEAT PUMP TECHNOLOGY Co.,Ltd. |
|
| TA01 | Transfer of patent application right |