CN109099696A - A kind of solar-assisted heat pump drying system method and device - Google Patents
A kind of solar-assisted heat pump drying system method and device Download PDFInfo
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- CN109099696A CN109099696A CN201810598140.1A CN201810598140A CN109099696A CN 109099696 A CN109099696 A CN 109099696A CN 201810598140 A CN201810598140 A CN 201810598140A CN 109099696 A CN109099696 A CN 109099696A
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- 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
-
- 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
- F26B21/02—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
-
- 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
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of solar-assisted heat pump drying systems, method and device, the system and device include dried medium and refrigerant circuit, and dried medium circuit is mainly made of solar thermal collector, blower, air-valve, hothouse, condenser and evaporator；Refrigerant circuit is mainly made of compressor, condenser, solenoid valve, electric expansion valve, evaporator and thermal-arrest/evaporator.The system, method and device can realize different drying operating modes by adjusting air valve according to weather condition, so that drying system can be with continuous operation, and keep lower dehumidifying energy consumption ratio.The present invention makes full use of solar energy, and the realization of a variety of drying modes on the basis of heat pump drying, can significantly improve the energy utilization rate in drying process, solves the problems, such as that operating cost in the prior art and dehumidifying energy consumption are relatively high.
Description
Technical field
The invention belongs to processing of farm products technical field of drying, more particularly to a kind of solar-assisted heat pump drying system
Method and device.
Background technique
Solar energy is a kind of inexhaustible clean energy resource, and solar energy is widely applied to each field, dry field
Unexceptional, solar energy drying is a kind of very energy-efficient drying mode, but as other application of solar energy, it is by such as
The limitation that solar energy is unstable, discontinuous etc..Heat pump is a kind of higher device of energy utilization rate, and heat pump drying is due to evaporation
The sensible heat and latent heat of the gas of device energy absorption dehydration room discharge further improve energy utilization rate, and heat pump drying operation is steady
It is fixed.Solar energy drying and heat pump drying are organically combined, can not only reduce specific energy consumption dehumidifying ratio, but also can protect
System run all right is demonstrate,proved, it is smaller by external interference.Existing solar-assisted heat pump drying device is varied, but Working mould
Formula is more single, cannot change operating mode according to different external condition, and improve the efficiency of device as far as possible.
Summary of the invention
Goal of the invention: for the above problem of the existing technology, the present invention proposes that a kind of solar-assisted heat pump is dry
System, method and device, the system, device can be run to steady and continuous, and can switch different work according to external condition
Mode, and energy consumption for drying is reduced as far as possible.
Technical solution: to achieve the purpose of the present invention, the technical scheme adopted by the invention is that: a kind of solar-assisted heat
Pump drying system, it is characterised in that: the system includes the dried medium circuit coupled by evaporator and condenser and refrigerant
Circuit, wherein dried medium circuit is by dried medium import (19), air-valve (1), air-valve (2), air-valve (3), solar thermal collector
(4), blower (5), condenser (6), hothouse (7), air-valve (8), air-valve (9), dried medium outlet (20), evaporator (10),
Air-valve (11), air-valve (12) and dried medium outlet (21) are constituted, and after dried medium is introduced by import (19), first flow through solar energy
Heat collector (4) passes through condenser (6) and is further heated, is then fed to hothouse (7), it is dry after medium both can be with
It is expelled directly out, can also be gone out finally by dried medium by evaporator (10) by cool-down dehumidification by dried medium outlet (20)
Mouth (21) discharge continues cycling through；Refrigerant circuit is by compressor (13), condenser (6), solenoid valve (14), electric expansion valve
(15), evaporator (10), solenoid valve (16), electric expansion valve (17) and thermal-arrest/evaporator (18) are constituted, and refrigerant is through compressor
(13) condenser (6) condensation heat release is sent to after compressing, then the evaporator (10) and thermal-arrest/evaporator by being arranged in parallel
(18), change the refrigerant flow for passing through evaporator (10) and thermal-arrest/evaporator (18) by electromagnetic valve for adjusting (14) and (16),
Then it is sent to evaporator (10) and thermal-arrest/evaporator (18) evaporation endothermic after electric expansion valve (15) and (17) throttling, most
After reenter compressor and continue cycling through；Dried medium circuit and refrigerant circuit are connected by condenser (6) and evaporator (10)
It is connected together.
Wherein, it in the circuit of the dried medium, is provided between evaporator (10) and solar thermal collector (4) dry
Dry medium entrance (19), dried medium outlet (21), air-valve (1), air-valve (2), air-valve (3), air-valve (11) and air-valve (12),
Air-valve (8), air-valve (9) and dried medium outlet (20), above-mentioned each air-valve are provided between hothouse (7) and evaporator (10)
Different drying operating modes is controlled for adjusting.
Wherein, in the refrigerant circuit, evaporator (10) and thermal-arrest/evaporator (18) are arranged in parallel, and evaporator
(10) it is provided with solenoid valve (14) and electric expansion valve (15) on pipeline, is provided with solenoid valve on thermal-arrest/evaporator (18) pipeline
(16) and electric expansion valve (17) evaporator (10) and thermal-arrest/evaporation, are controlled by above-mentioned solenoid valve and electric expansion valve respectively
Different refrigerant flow and evaporating pressure on device (18) pipeline.
Wherein, the dried medium is either air, is also possible to meet the various gases of dry products requirement.
In addition, the invention discloses a kind of drying means realized according to solar-assisted heat pump drying system, feature
It is, the method steps are as follows:
It is set when solar radiation intensity can make the temperature of the dried medium heated by solar thermal collector (4) be higher than drying
When fixed temperature, open air-valve (1), (3), (8), close air-valve (2), (9), and close heat pump, at this point, only solar energy provide it is dry
Energy needed for dry, is solar energy drying mode；
When not having solar radiation or night, heat pump is opened, closes air-valve (3), (8), opens air-valve (2), (9), is closed
It closes solenoid valve (16), opens solenoid valve (14)；If being greater than dried medium import by the temperature of the dried medium of evaporator (10)
(19) temperature then closes air-valve (11), (1), opens air-valve (12), is enclosed heat pump drying mode at this time；If passing through evaporation
The temperature of the dried medium of device (10) is less than the temperature of dried medium import (19), and passes through the dried medium of evaporator (10)
Relative humidity is greater than the relative humidity of dried medium import (19), then opens air-valve (11), (1), closes air-valve (12), is at this time
Open type heat pump drying mode；If the temperature and relative humidity by the dried medium of evaporator (10) are respectively less than dried medium import
(19) temperature and relative humidity, adjusting air valve (1), (11), (12) make it have corresponding aperture, are semi-open type heat pump at this time
Drying mode；
When solar radiation intensity be only capable of making the temperature of the dried medium heated by solar thermal collector (4) increase but
Lower than dryer settings temperature when, open heat pump, and open air-valve (3), close air-valve (2), open simultaneously solenoid valve (14),
(16)；If being greater than the temperature of dried medium import (19) by the temperature of the dried medium of evaporator (10), air-valve is closed
(11), (1) opens air-valve (12), is enclosed solar-assisted heat pump drying mode at this time；If passing through the drying of evaporator (10)
The temperature of medium is less than the temperature of dried medium import (19), and is greater than by the relative humidity of the dried medium of evaporator (10)
The relative humidity of dried medium import (19) then opens air-valve (11), (1), closes air-valve (12), is that open type solar energy is auxiliary at this time
Help heat pump drying mode；If the temperature and relative humidity by the dried medium of evaporator (10) are respectively less than dried medium import
(19) temperature and relative humidity, adjusting air valve (1), (11), (12) make it have corresponding aperture, are the semi-open type sun at this time
It can assisted heat pump drying mode.
In addition, the invention also provides a kind of solar-assisted heat pump drying device, the device include by evaporator and
The dried medium circuit of condenser coupling and refrigerant circuit, wherein dried medium circuit is by dried medium import (19), air-valve
(1), air-valve (2), air-valve (3), solar thermal collector (4), blower (5), condenser (6), hothouse (7), air-valve (8), air-valve
(9), dried medium outlet (20), evaporator (10), air-valve (11), air-valve (12) and dried medium outlet (21) are constituted, dry
Medium by import (19) introduce after, first flow through solar thermal collector (4), pass through condenser (6) and be further heated, then by
It is sent into hothouse (7), the medium after drying both can export (20) by dried medium and be expelled directly out, and can also pass through evaporator
(10) it by cool-down dehumidification, finally by dried medium outlet (21) discharge or continues cycling through；Refrigerant circuit by compressor (13),
Condenser (6), solenoid valve (14), electric expansion valve (15), evaporator (10), solenoid valve (16), electric expansion valve (17) sum aggregate
Heat/evaporator (18) is constituted, and refrigerant is sent to condenser (6) condensation heat release after compressor (13) are compressed, then by simultaneously
The evaporator (10) and thermal-arrest/evaporator (18) for joining setting are changed by electromagnetic valve for adjusting (14) and (16) and pass through evaporator
(10) and the refrigerant flow of thermal-arrest/evaporator (18), evaporation then is sent to after electric expansion valve (15) and (17) throttling
Device (10) and thermal-arrest/evaporator (18) evaporation endothermic, finally reenter compressor and continue cycling through；Dried medium circuit and refrigeration
Agent circuit is linked together by condenser (6) and evaporator (10).
Wherein, it in the circuit of the dried medium, is provided between evaporator (10) and solar thermal collector (4) dry
Dry medium entrance (19), dried medium outlet (21), air-valve (1), air-valve (2), air-valve (3), air-valve (11) and air-valve (12),
Air-valve (8), air-valve (9) and dried medium outlet (20), above-mentioned each air-valve are provided between hothouse (7) and evaporator (10)
It is adjustably controlled different drying operating modes.
Wherein, in the refrigerant circuit, evaporator and thermal-arrest/evaporator are arranged in parallel, and evaporator tube road is set
Solenoid valve (14) and electric expansion valve (15) are set, thermal-arrest/evaporator tube road is provided with solenoid valve (16) and electric expansion valve
(17), it can be controlled respectively on evaporator (10) and thermal-arrest/evaporator (18) pipeline not by above-mentioned solenoid valve and electric expansion valve
Same refrigerant flow and evaporating pressure.
Wherein, the dried medium and air is referred not only to, can is the various gases for meeting dry products requirement.
The utility model has the advantages that compared with prior art, technical solution of the present invention has following advantageous effects:
Solar-assisted heat pump drying system of the present invention will be well embedded in Analysis of Heat Pump Drying System to the utilization of solar energy
In, the energy consumption in drying process is reduced, and by controlling each air-valve, which can realize according to different weather conditions
Corresponding dry operating mode.The system can be different by switching under the premise of guaranteeing that system is continuously and smoothly run
Operational mode, improve the system energy consumption dehumidifying ratio.
Detailed description of the invention
Fig. 1 is the dry structural schematic diagram of solar-assisted heat pump of the present invention.
Specific embodiment
Further description of the technical solution of the present invention with reference to the accompanying drawings and examples.
A kind of solar-assisted heat pump drying system disclosed by the invention, as shown in Figure 1, the system includes passing through evaporator
Dried medium circuit and refrigerant circuit with condenser coupling, wherein dried medium circuit is by dried medium import (19), wind
Valve (1), air-valve (2), air-valve (3), solar thermal collector (4), blower (5), condenser (6), hothouse (7), air-valve (8), wind
Valve (9), dried medium outlet (20), evaporator (10), air-valve (11), air-valve (12) and dried medium outlet (21) are constituted, and are done
After dry medium is introduced by import (19), solar thermal collector (4) are first flowed through, condenser (6) is passed through and is further heated, then
It is admitted to hothouse (7), the medium after drying both can export (20) by dried medium and be expelled directly out, and can also pass through evaporator
(10) it by cool-down dehumidification, finally by dried medium outlet (21) discharge or continues cycling through；Refrigerant circuit by compressor (13),
Condenser (6), solenoid valve (14), electric expansion valve (15), evaporator (10), solenoid valve (16), electric expansion valve (17) sum aggregate
Heat/evaporator (18) is constituted, and refrigerant is sent to condenser (6) condensation heat release after compressor (13) are compressed, then by simultaneously
The evaporator (10) and thermal-arrest/evaporator (18) for joining setting are changed by electromagnetic valve for adjusting (14) and (16) and pass through evaporator
(10) and the refrigerant flow of thermal-arrest/evaporator (18), evaporation then is sent to after electric expansion valve (15) and (17) throttling
Device (10) and thermal-arrest/evaporator (18) evaporation endothermic, finally reenter compressor and continue cycling through；Dried medium circuit and refrigeration
Agent circuit is linked together by condenser (6) and evaporator (10).
Wherein, it in the circuit of the dried medium, is provided between evaporator (10) and solar thermal collector (4) dry
Dry medium entrance (19), dried medium outlet (21), air-valve (1), air-valve (2), air-valve (3), air-valve (11) and air-valve (12),
Air-valve (8), air-valve (9) and dried medium outlet (20), above-mentioned each air-valve are provided between hothouse (7) and evaporator (10)
Different drying operating modes is controlled for adjusting.
Wherein, in the refrigerant circuit, evaporator (10) and thermal-arrest/evaporator (18) are arranged in parallel, and evaporator
(10) it is provided with solenoid valve (14) and electric expansion valve (15) on pipeline, is provided with solenoid valve on thermal-arrest/evaporator (18) pipeline
(16) and electric expansion valve (17) evaporator (10) and thermal-arrest/evaporation, are controlled by above-mentioned solenoid valve and electric expansion valve respectively
Different refrigerant flow and evaporating pressure on device (18) pipeline.
The invention also discloses a kind of solar-assisted heat pump drying device, which includes passing through evaporator and condenser
The dried medium circuit of coupling and refrigerant circuit, wherein dried medium circuit is by dried medium import (19), air-valve (1), wind
Valve (2), solar thermal collector (4), blower (5), condenser (6), hothouse (7), air-valve (8), air-valve (9), is done air-valve (3)
Dry media outlet (20), evaporator (10), air-valve (11), air-valve (12) and dried medium outlet (21) constitute, dried medium by
After import (19) introduces, solar thermal collector (4) are first flowed through, condenser (6) is passed through and is further heated, be then fed to dry
Dry room (7), the medium after drying both can export (20) by dried medium and be expelled directly out, can also be dropped by evaporator (10)
Temperature dehumidifying finally by dried medium outlet (21) discharge or continues cycling through；Refrigerant circuit is by compressor (13), condenser
(6), solenoid valve (14), electric expansion valve (15), evaporator (10), solenoid valve (16), electric expansion valve (17) and thermal-arrest/evaporation
Device (18) is constituted, and refrigerant is sent to condenser (6) condensation heat release after compressor (13) are compressed, then by being arranged in parallel
Evaporator (10) and thermal-arrest/evaporator (18), by electromagnetic valve for adjusting (14) and (16) change by evaporator (10) and thermal-arrest/
The refrigerant flow of evaporator (18) is then sent to evaporator (10) sum aggregate after electric expansion valve (15) and (17) throttling
Heat/evaporator (18) evaporation endothermic, finally reenters compressor and continues cycling through；Dried medium circuit and refrigerant circuit pass through
Condenser (6) and evaporator (10) link together.
Wherein, it in the circuit of the dried medium, is provided between evaporator (10) and solar thermal collector (4) dry
Dry medium entrance (19), dried medium outlet (21), air-valve (1), air-valve (2), air-valve (3), air-valve (11) and air-valve (12),
Air-valve (8), air-valve (9) and dried medium outlet (20), above-mentioned each air-valve are provided between hothouse (7) and evaporator (10)
It is adjustably controlled different drying operating modes.
Wherein, in the refrigerant circuit, evaporator and thermal-arrest/evaporator are arranged in parallel, and evaporator tube road is set
Solenoid valve (14) and electric expansion valve (15) are set, thermal-arrest/evaporator tube road is provided with solenoid valve (16) and electric expansion valve
(17), it can be controlled respectively on evaporator (10) and thermal-arrest/evaporator (18) pipeline not by above-mentioned solenoid valve and electric expansion valve
Same refrigerant flow and evaporating pressure.
In addition, the invention discloses a kind of drying means realized according to solar-assisted heat pump drying system, this method
Steps are as follows:
It is set when solar radiation intensity can make the temperature of the dried medium heated by solar thermal collector (4) be higher than drying
When fixed temperature, air-valve 1,3,8 is opened, closes air-valve 2,9, and close heat pump.At this point, only solar energy provides dry required energy
Amount, is solar energy drying mode.
When not having solar radiation or night, heat pump is opened, closes air-valve 3,8, opens air-valve 2,9, closes solenoid valve
16, open solenoid valve 14.If being greater than the temperature of dried medium import 19 by the temperature of the dried medium of evaporator 10, close
Air-valve 11,1 opens air-valve 12, is enclosed heat pump drying mode at this time；If being less than by the temperature of the dried medium of evaporator 10
The temperature of dried medium import 19 then opens air-valve 11,1, closes air-valve 12, is open type heat pump drying mode at this time；If passing through
The temperature of the dried medium of evaporator 10 is less than the temperature of dried medium import 19, and the dried medium at dried medium import 19
When humidity is larger, it is semi-open type heat pump drying mode at this time that adjustable air-valve 1,11,12, which makes it have corresponding aperture,.
When solar radiation intensity be only capable of making the temperature of the dried medium heated by solar thermal collector (4) increase but
Lower than dryer settings temperature when, open heat pump, and open air-valve 3, close air-valve 2, open simultaneously solenoid valve 14,16.If logical
The temperature of the dried medium of pervaporation device 10 is greater than the temperature of dried medium import 19, then closes air-valve 11,1, opens air-valve 12,
It is enclosed solar-assisted heat pump drying mode at this time；If by the temperature of the dried medium of evaporator 10 be less than dried medium into
The temperature of mouth 19 then opens air-valve 11,1, closes air-valve 12, is form solar-assisted heat pump drying mode at this time；If passing through
The temperature of the dried medium of evaporator 10 is less than the temperature of dried medium import 19, and the dried medium at dried medium import 19
When humidity is larger, adjustable air-valve 1,11,12 makes it have corresponding aperture, is that half form solar-assisted heat pump is dry at this time
Mode.
Claims (9)
1. a kind of solar-assisted heat pump drying system, it is characterised in that: the system includes being coupled by evaporator and condenser
Dried medium circuit and refrigerant circuit, wherein dried medium circuit is by dried medium import (19), air-valve (1), air-valve
(2), air-valve (3), solar thermal collector (4), blower (5), condenser (6), hothouse (7), air-valve (8), air-valve (9), drying
Media outlet (20), evaporator (10), air-valve (11), air-valve (12) and dried medium outlet (21) constitute, dried medium by into
After mouth (19) introduces, solar thermal collector (4) are first flowed through, condenser (6) is passed through and is further heated, be then fed to drying
Room (7), the medium after drying both can export (20) by dried medium and be expelled directly out, or be removed by evaporator (10) by cooling
It is wet, finally by dried medium outlet (21) discharge or continue cycling through；Refrigerant circuit is by compressor (13), condenser (6), electricity
Magnet valve (14), electric expansion valve (15), evaporator (10), solenoid valve (16), electric expansion valve (17) and thermal-arrest/evaporator (18)
It constitutes, refrigerant is sent to condenser (6) condensation heat release after compressor (13) are compressed, then the evaporator by being arranged in parallel
(10) and thermal-arrest/evaporator (18), changed by electromagnetic valve for adjusting (14) and (16) and pass through evaporator (10) and thermal-arrest/evaporator
(18) then refrigerant flow is sent to evaporator (10) and thermal-arrest/evaporation after electric expansion valve (15) and (17) throttling
Device (18) evaporation endothermic, finally reenters compressor and continues cycling through；Also, dried medium circuit and refrigerant circuit pass through cold
Condenser (6) and evaporator (10) link together.
2. a kind of solar-assisted heat pump drying system according to claim 1, it is characterised in that: the dried medium
Circuit in, between evaporator (10) and solar thermal collector (4) be provided with dried medium import (19), dried medium export
(21), air-valve (1), air-valve (2), air-valve (3), air-valve (11) and air-valve (12) are set between hothouse (7) and evaporator (10)
Air-valve (8), air-valve (9) and dried medium outlet (20) are set, above-mentioned each air-valve, which is used to adjust, controls different drying work
Mode.
3. a kind of solar-assisted heat pump drying system according to claim 1, it is characterised in that: the refrigerant returns
Lu Zhong, evaporator (10) and thermal-arrest/evaporator (18) are arranged in parallel, and on evaporator (10) pipeline be provided with solenoid valve (14) and
Electric expansion valve (15) is provided with solenoid valve (16) and electric expansion valve (17) on thermal-arrest/evaporator (18) pipeline, by above-mentioned
Solenoid valve and electric expansion valve control respectively refrigerant flow different on evaporator (10) and thermal-arrest/evaporator (18) pipeline and
Evaporating pressure.
4. a kind of solar-assisted heat pump drying system according to claim 1, it is characterised in that: the dried medium
Either air, is also possible to meet the various gases of dry products requirement.
5. the drying means that a kind of solar-assisted heat pump drying system according to claim 1 is realized, which is characterized in that
The method steps are as follows:
(1) it is set when solar radiation intensity can make the temperature of the dried medium heated by solar thermal collector (4) be higher than drying
When fixed temperature, open air-valve (1), (3), (8), close air-valve (2), (9), and close heat pump, at this point, only solar energy provide it is dry
Energy needed for dry, is solar energy drying mode；
(2) when not having solar radiation or night, heat pump is opened, closes air-valve (3), (8), opens air-valve (2), (9), is closed
Solenoid valve (16) is opened solenoid valve (14)；If being greater than dried medium import by the temperature of the dried medium of evaporator (10)
(19) temperature then closes air-valve (11), (1), opens air-valve (12), is enclosed heat pump drying mode at this time；If passing through evaporation
The temperature of the dried medium of device (10) is less than the temperature of dried medium import (19), and passes through the dried medium of evaporator (10)
Relative humidity is greater than the relative humidity of dried medium import (19), then opens air-valve (11), (1), closes air-valve (12), is at this time
Open type heat pump drying mode；If the temperature and relative humidity by the dried medium of evaporator (10) are respectively less than dried medium import
(19) temperature and relative humidity, adjusting air valve (1), (11), (12) make it have corresponding aperture, are semi-open type heat pump at this time
Drying mode；
(3) when solar radiation intensity be only capable of making the temperature of the dried medium heated by solar thermal collector (4) increase but
Lower than dryer settings temperature when, open heat pump, and open air-valve (3), close air-valve (2), open simultaneously solenoid valve (14),
(16)；If being greater than the temperature of dried medium import (19) by the temperature of the dried medium of evaporator (10), air-valve is closed
(11), (1) opens air-valve (12), is enclosed solar-assisted heat pump drying mode at this time；If passing through the drying of evaporator (10)
The temperature of medium is less than the temperature of dried medium import (19), and is greater than by the relative humidity of the dried medium of evaporator (10)
The relative humidity of dried medium import (19) then opens air-valve (11), (1), closes air-valve (12), is that open type solar energy is auxiliary at this time
Help heat pump drying mode；If the temperature and relative humidity by the dried medium of evaporator (10) are respectively less than dried medium import
(19) temperature and relative humidity, adjusting air valve (1), (11), (12) make it have corresponding aperture, are the semi-open type sun at this time
It can assisted heat pump drying mode.
6. a kind of solar-assisted heat pump drying device, it is characterised in that: the device includes being coupled by evaporator and condenser
Dried medium circuit and refrigerant circuit, wherein dried medium circuit is by dried medium import (19), air-valve (1), air-valve
(2), air-valve (3), solar thermal collector (4), blower (5), condenser (6), hothouse (7), air-valve (8), air-valve (9), drying
Media outlet (20), evaporator (10), air-valve (11), air-valve (12) and dried medium outlet (21) constitute, dried medium by into
After mouth (19) introduces, solar thermal collector (4) are first flowed through, condenser (6) is passed through and is further heated, be then fed to drying
Room (7), the medium after drying both can export (20) by dried medium and be expelled directly out, can also be cooled down by evaporator (10)
Dehumidifying finally by dried medium outlet (21) discharge or continues cycling through；Refrigerant circuit by compressor (13), condenser (6),
Solenoid valve (14), electric expansion valve (15), evaporator (10), solenoid valve (16), electric expansion valve (17) and thermal-arrest/evaporator
(18) it constitutes, refrigerant is sent to condenser (6) condensation heat release, the then steaming by being arranged in parallel after compressor (13) are compressed
Device (10) and thermal-arrest/evaporator (18) are sent out, is changed by electromagnetic valve for adjusting (14) and (16) and passes through evaporator (10) and thermal-arrest/steaming
Send out the refrigerant flow of device (18), be then sent to after electric expansion valve (15) and (17) throttle evaporator (10) and thermal-arrest/
Evaporator (18) evaporation endothermic, finally reenters compressor and continues cycling through；Dried medium circuit and refrigerant circuit pass through cold
Condenser (6) and evaporator (10) link together.
7. a kind of solar-assisted heat pump drying device according to claim 6, it is characterised in that: the dried medium
Circuit in, between evaporator (10) and solar thermal collector (4) be provided with dried medium import (19), dried medium export
(21), air-valve (1), air-valve (2), air-valve (3), air-valve (11) and air-valve (12) are set between hothouse (7) and evaporator (10)
Air-valve (8), air-valve (9) and dried medium outlet (20) are set, above-mentioned each air-valve, which is used to adjust, controls different drying work
Mode.
8. a kind of solar-assisted heat pump drying device according to claim 6, it is characterised in that: the refrigerant returns
Lu Zhong, evaporator (10) and thermal-arrest/evaporator (18) are arranged in parallel, and on evaporator (10) pipeline be provided with solenoid valve (14) and
Electric expansion valve (15) is provided with solenoid valve (16) and electric expansion valve (17) on thermal-arrest/evaporator (18) pipeline, by above-mentioned
Solenoid valve and electric expansion valve control respectively refrigerant flow different on evaporator (10) and thermal-arrest/evaporator (18) pipeline and
Evaporating pressure.
9. a kind of solar-assisted heat pump drying device according to claim 6, it is characterised in that: the dried medium
Either air, is also possible to meet the various gases of dry products requirement.
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| CN112021630A (en) * | 2020-09-21 | 2020-12-04 | 东南大学 | Heat accumulating type solar energy coupling air source heat pump tobacco leaf drying system and control method |
| CN112577306A (en) * | 2020-12-16 | 2021-03-30 | 中南林业科技大学 | Multi-mode solar heat pump camellia oleifera seed drying and energy supply device and control method thereof |
| CN115615153A (en) * | 2022-08-09 | 2023-01-17 | 珠海格力电器股份有限公司 | Drying system control method and device and drying system |
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