CN107940924A - A kind of low circumstance temperature heat pump drying unit - Google Patents
A kind of low circumstance temperature heat pump drying unit Download PDFInfo
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- CN107940924A CN107940924A CN201711372636.9A CN201711372636A CN107940924A CN 107940924 A CN107940924 A CN 107940924A CN 201711372636 A CN201711372636 A CN 201711372636A CN 107940924 A CN107940924 A CN 107940924A
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- 238000001035 drying Methods 0.000 title claims abstract description 60
- 239000003507 refrigerant Substances 0.000 claims abstract description 110
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 6
- 238000010257 thawing Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 17
- 238000007664 blowing Methods 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 claims 1
- 238000010025 steaming Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- 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
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
-
- 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
- F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/001—Heating arrangements using waste heat
- F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
A kind of low circumstance temperature heat pump drying unit, includes cyclic drying medium flow, hydrofuge drying process and refrigerant drying system flow；The refrigerant drying system flow includes main road refrigerant loop passage, compressor Gas-supplying enthalpy-increasing refrigerant loop passage and refrigerant system defrosting flow.The drying system of the safe operation under low temperature environment or adverse circumstances is realized by air injection enthalpy-increasing, heating capacity is strong, and heat exchange efficiency is high, and enough heats can be obtained from 25 DEG C of low temperature environments.The present invention uses heat pump techniques, air injection enthalpy-increasing technology and heat recovery technology, organically combines into low circumstance temperature heat pump drying unit.
Description
Technical field
Patent of the present invention is related to heat pump drying field, is related specifically to a kind of heat-collecting pump technology, air injection enthalpy-increasing technology and heat
The low circumstance temperature heat pump drying unit of the combination of recovery technology.
Background technology
Dry technology is widely used in the various fields of social production, the heat main source of existing drying equipment
In coal-fired, fuel oil or heating wire, have the shortcomings that high energy consumption, cost are big.
Current drying heat pump receives liking for many dry producers with advantages such as its pollution-free, low energy consumption, but at present
Dry heat pump generally provides dry heat using simple heat pump system, if run under low temperature environment or adverse circumstances, just
Occur the situation that system operation is unstable, operational efficiency reduces, so as to have impact on the use scope of dry heat pump；In addition,
The reclaimer operation of controlled hydrofuge and hydrofuge heat is carried out in dry heat pump and not according to real-time temperature.
The content of the invention
In order to solve above-mentioned problems of the prior art, the present invention provides one kind and is increased in low temperature environment by jet
Enthalpy realizes the drying system of the safe operation under low temperature environment or adverse circumstances, and heating capacity is strong, and heat exchange efficiency is high, can be with
The low circumstance temperature heat pump drying unit of enough heats is obtained from -25 DEG C of low temperature environments.
The technical solution adopted by the present invention to solve the technical problems is：A kind of low circumstance temperature heat pump drying unit, includes
Cyclic drying medium flow, hydrofuge drying process and refrigerant drying system flow；Refrigerant drying system flow includes master
Road refrigerant loop passage, compressor Gas-supplying enthalpy-increasing refrigerant loop passage and refrigerant system defrosting flow.
Preferably, in the cyclic drying medium flow, condenser is connected by air passage with drying cycles wind turbine, dry
Circulating fan is connected by air passage with air-supply homogenizing plate, and air-supply homogenizing plate is connected by air passage with hothouse, and hothouse leads to
Cross air passage with return air homogenizing plate to be connected, return air homogenizing plate is connected by air passage with condenser, forms a closed air passage circulation
System.
Or it is preferable, in the hydrofuge drying process, fresh air enters leaf filter, and leaf filter passes through air passage and wind
Adjustable valve is connected, and volume damper returns device with board-like heat by air passage and is connected, and board-like heat returns device and passes through air passage and fresh air
Air-introduced machine is connected, and fresh air air-introduced machine is connected by air passage with condenser, and condenser passes through air passage and drying cycles wind turbine phase
Connection, drying cycles wind turbine are connected by air passage with air-supply homogenizing plate, and air-supply homogenizing plate is connected by air passage with hothouse,
Hothouse is connected by air passage with return air homogenizing plate, and return air homogenizing plate returns device with board-like heat by air passage and is connected, board-like heat
Return device by air passage with volume damper to be connected, volume damper is connected by air passage with wet-emitting blower, and wet-emitting blower leads to
Cross air passage with finned evaporator to be connected, finned evaporator is connected by air passage with axial flow blower, and axial flow blower is last
Humid air is discharged.
Or it is preferable, in the main road refrigerant loop passage, compressor passes through refrigerant tubing and four-way reversing valve phase
Connection, four-way reversing valve are connected by refrigerant tubing with finned cooler, and finned cooler passes through refrigerant tubing
It is connected with check valve, check valve is connected by refrigerant tubing with economizer, and economizer passes through refrigerant tubing and filtering
Device is connected, and filter is connected by refrigerant tubing with main road electric expansion valve, and main road electric expansion valve passes through refrigerant
Pipeline is connected with check valve, and check valve is connected by refrigerant tubing with finned evaporator, and finned evaporator passes through
Refrigerant tubing is connected with four-way reversing valve, and four-way reversing valve is connected by refrigerant tubing with gas-liquid separator, gas-liquid
Separator is connected by refrigerant tubing with the return-air interface of compressor.
Or it is preferable, in the compressor Gas-supplying enthalpy-increasing refrigerant loop passage, compressor passes through refrigerant tubing and four
Logical reversal valve is connected, and four-way reversing valve is connected by refrigerant tubing with finned cooler, and finned cooler passes through
Refrigerant tubing is connected with check valve, and check valve is connected by refrigerant tubing with filter, and filter passes through refrigerant
Pipeline is connected with bypass electric expansion valve, and bypass electric expansion valve is connected by refrigerant tubing with economizer, economizer
Pass through refrigerant tubing and compressor（Tonifying Qi interface）It is connected.
Or it is preferable, in the refrigerant system defrosting flow, compressor passes through refrigerant tubing and four-way reversing valve phase
Connection, four-way reversing valve are connected by refrigerant tubing with finned evaporator, and finned evaporator passes through refrigerant tubing
It is connected with check valve, check valve is connected by refrigerant tubing with economizer, and economizer passes through refrigerant tubing and filtering
Device is connected, and filter is connected by refrigerant tubing with main road electric expansion valve, and main road electric expansion valve passes through refrigerant
Pipeline is connected with check valve, and check valve is connected by refrigerant tubing with finned cooler, and finned cooler passes through
Refrigerant tubing is connected with four-way reversing valve, and four-way reversing valve is connected by refrigerant tubing with gas-liquid separator, gas-liquid
Separator is connected by refrigerant tubing with the return-air interface of compressor.
The present invention uses heat pump techniques, air injection enthalpy-increasing technology and heat recovery technology, organically combines into low circumstance temperature heat pump drying
Unit, compared to the prior art, the advantage is that：
（1）As shown in Figure 1, the present invention uses economizer, dry heat is provided by air injection enthalpy-increasing system, especially by system
After increasing enthalpy takes liquid point to be arranged on major loop supercooling outlet, the degree of supercooling that economizer crosses cold side is taken full advantage of, is conducive to system increasing
The feed flow in enthalpy circuit, when unit ensure that in the high return air temperature operating mode of low circumstance temperature, system coolant leakage when bad working environments are run
System is run under these bad working environments also can normally take liquid, make system exhaust temperature excessive, improve compressor operating
Reliability, ensures dry heat pump safe and stable operation at low ambient temperatures, and the efficiency extension complete machine for also lifting dry heat pump uses
Service life.
（2）As shown in Figure 1, board-like heat is provided with air passage of the present invention returns device, be conducive to improve unit in hydrofuge work shape
The heat in hydrofuge medium can be fully absorbed under state, what the fresh air that drying system supplements also was preheated, be conducive in air passage
The raising of wind pushing temperature.The heat under hydrofuge working status in discharged medium returns device heat by board-like heat first and returns at the same time
Receive, the fresh air being added returns device by its heat absorption by board-like heat, preheats the fresh air of heat make-up, in its discharged medium
Heat again by low circumstance temperature drying machine finned evaporator absorb, the partial heat energy discharged it by finned evaporator
The heat transfer into hothouse, while the heat exchange amount of evaporator at low ambient temperatures is also improved, turn waste into wealth.
（3）As shown in Figure 1, being provided with drying cycles wind turbine in air passage of the present invention, be conducive to expect how many and drying according to spy
The temperature increase requirement progress matched design of material is supporting, from the limitation of dryer group volume size.
（4）As shown in Figure 1, air-supply homogenizing plate and return air homogenizing plate are provided with air passage of the present invention, it is ensured that by drying room
Temperature field and wind field are evenly arranged, and improve the dry efficiency of drying.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is overall structure diagram of the present invention；
Description of reference numerals：1st, compressor；2nd, four-way reversing valve；3rd, finned evaporator；4th, finned cooler；5th, gas-liquid point
From device；6th, main road electric expansion valve；7th, check valve；8th, check valve；9th, axial flow blower；10th, check valve；11st, check valve；12nd, mistake
Filter；13rd, filter；14th, bypass electronics is swollen uses valve；15th, economizer；16th, wet-emitting blower；17th, volume damper；18th, it is board-like
Filter；19th, volume damper；20th, board-like heat returns device；21st, fresh air air-introduced machine；22nd, baking oven switch gate；23rd, baking oven air-supply side
Homogenizing plate；24th, dried medium supply air duct；25th, baking oven return side homogenizing plate；26th, dried medium return airway；27th, dry wind
Road circulating fan；28th, hothouse.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
The workflow and operation principle of a kind of low circumstance temperature heat pump drying unit are as follows：
1. cyclic drying medium flow：As shown in Figure 1,4 → drying cycles of condenser wind turbine 27 → air-supply homogenizing plate 23 → drying
Room 28 → return air homogenizing plate, 25 → condenser 4；Pass through air passage circular flow.
Condenser 4 is connected by air passage with drying cycles wind turbine 27, and drying cycles wind turbine 27 is equal with air-supply by air passage
Flowing plate is connected, and air-supply homogenizing plate is connected by air passage with hothouse 28, and hothouse 28 passes through air passage and return air homogenizing plate phase
Even, return air homogenizing plate is connected by air passage with condenser 4, forms a closed air passage circulatory system.
2. hydrofuge drying process：As shown in Figure 1, fresh air → 18 → volume damper of leaf filter 19 → board-like heat returns device
20（A interfaces）→ it is board-like heat return device 20（B interface）→ fresh air air-introduced machine 21 → condenser, 4 → drying cycles wind turbine 27 → air-supply is equal
Flowing plate 23 → hothouse, 28 → return air homogenizing plate 25 → board-like heat returns device 20（C interface）→ it is board-like heat return device 20（D interface）→ wind
Adjustable valve 17 → wet-emitting blower, 16 → finned evaporator, 3 → axial flow blower, 9 → hydrofuge.
Fresh air enters leaf filter 18, and leaf filter 18 is connected by air passage with volume damper 19, air quantity tune
Section valve 19 by air passage and board-like heat return device 20 be connected → board-like heat time device 20 is connected by air passage with fresh air air-introduced machine 21,
Fresh air air-introduced machine 21 is connected by air passage with condenser 4, and condenser 4 is connected by air passage with drying cycles wind turbine 27, is done
Dry circulating fan 27 is connected by air passage with air-supply homogenizing plate 23, and air-supply homogenizing plate 23 is connected by air passage with hothouse 28
Connect, hothouse 28 is connected by air passage with return air homogenizing plate 25, and return air homogenizing plate 25 returns 20 phase of device by air passage and board-like heat
Connection, board-like heat return device 20 and are connected by air passage with volume damper 17, and volume damper 17 passes through air passage and wet-emitting blower
16 are connected, and wet-emitting blower 16 is connected by air passage with finned evaporator 3, and finned evaporator 3 passes through air passage and axis stream
Wind turbine 9 is connected, and axial flow blower 9 finally discharges humid air.
3. refrigerant drying system flow, as shown in the figure：
1）Main road refrigerant loop passage：4 → check valve of compressor 1 → four-way reversing valve, 24 → finned cooler 7 → economy
Device 15 → filter, 12 → main road electric expansion valve 6 → check valve, 10 → finned evaporator, 3 → four-way reversing valve, 24 → gas-liquid
The return-air interface of 5 → compressor of separator 1.
Compressor 1 is connected by refrigerant tubing with four-way reversing valve 24, and four-way reversing valve 24 passes through refrigerant tubing
It is connected with finned cooler 4, finned cooler 4 is connected by refrigerant tubing with check valve 7, and check valve 7 passes through
Refrigerant tubing is connected with economizer 15, and economizer 15 is connected by refrigerant tubing with filter 12, and filter 12 is logical
Cross refrigerant tubing with main road electric expansion valve 6 to be connected, main road electric expansion valve 6 passes through refrigerant tubing and 10 phase of check valve
Connection, check valve 10 are connected by refrigerant tubing with finned evaporator 3, and finned evaporator 3 passes through refrigerant tubing
It is connected with four-way reversing valve 24, four-way reversing valve 24 is connected by refrigerant tubing with gas-liquid separator 5, gas-liquid separator
5 are connected by refrigerant tubing with the return-air interface of compressor 1.
2）Compressor Gas-supplying enthalpy-increasing refrigerant loop passage：1 → four-way reversing valve of compressor, 24 → finned cooler 4 →
15 → compressor of check valve 7 → filter, 13 → bypass, 14 → economizer of electric expansion valve 1（Tonifying Qi interface）.
Compressor 1 is connected by refrigerant tubing with four-way reversing valve 24, and four-way reversing valve 24 passes through refrigerant tubing
It is connected with finned cooler 4, finned cooler 4 is connected by refrigerant tubing with check valve 7, and check valve 7 passes through
Refrigerant tubing is connected with filter 13, and filter 13 is connected by refrigerant tubing with bypass electric expansion valve 14, auxiliary
Road electric expansion valve 14 is connected by refrigerant tubing with economizer 15, and economizer 15 passes through refrigerant tubing and compressor 1
（Tonifying Qi interface）It is connected.
3）Refrigerant system defrosting flow：As shown in the figure, 1 → four-way reversing valve of compressor, 24 → finned evaporator 3 →
Check valve 11 → economizer, 15 → filter, 12 → main road electric expansion valve 6 → check valve, 8 → finned cooler, 4 → four-way changes
To the return-air interface of 24 → gas-liquid separator of valve, 5 → compressor 1.
Compressor 1 is connected by refrigerant tubing with four-way reversing valve 24, and four-way reversing valve 24 passes through refrigerant tubing
It is connected with finned evaporator 3, finned evaporator 3 is connected by refrigerant tubing with check valve 11, and check valve 11 is logical
Cross refrigerant tubing with economizer 15 to be connected, economizer 15 is connected by refrigerant tubing with filter 12, filter 12
It is connected by refrigerant tubing with main road electric expansion valve 6, main road electric expansion valve 6 passes through refrigerant tubing and check valve 8
It is connected, check valve 8 is connected by refrigerant tubing with finned cooler 4, and finned cooler 4 passes through refrigerant tubing
It is connected with four-way reversing valve 24, four-way reversing valve 24 is connected by refrigerant tubing with gas-liquid separator 5, gas-liquid separator
5 are connected by refrigerant tubing with the return-air interface of compressor 1.
Preferred embodiment is further used as, Temperature Humidity Sensor, the row of control circuit are additionally provided with drying box 28
Wet blower, control circuit are connected with Temperature Humidity Sensor and wet-emitting blower respectively.Control circuit can be adopted according to Temperature Humidity Sensor
The data of collection judge humiture in drying shed, when humiture reaches certain value, then can trigger control circuit automatically turn on hydrofuge wind
Whether machine, work so as to fulfill control wet-emitting blower according to demand.
Although the various embodiments described above are described, those skilled in the art once know basic wound
The property made concept, then can make these embodiments other change and modification, so these are only the embodiment of the present invention, not
Therefore the scope of patent protection of the present invention is limited, every equivalent structure made using description of the invention and accompanying drawing content or is waited
Flow conversion is imitated, is directly or indirectly used in other related technical areas, is similarly included in the patent protection of the present invention
Within the scope of.
Claims (6)
- A kind of 1. low circumstance temperature heat pump drying unit, it is characterised in that include cyclic drying medium flow, hydrofuge drying process and Refrigerant drying system flow；The refrigerant drying system flow includes main road refrigerant loop passage, compressor tonifying Qi Increasing enthalpy refrigerant loop passage and refrigerant system defrosting flow.
- 2. low circumstance temperature heat pump drying unit according to claim 1, it is characterised in that the cyclic drying medium flow In, condenser（4）Pass through air passage and drying cycles wind turbine（27）It is connected, drying cycles wind turbine（27）It is equal with air-supply by air passage Flowing plate is connected, and air-supply homogenizing plate passes through air passage and hothouse（28）It is connected, hothouse（28）Flowed with return air by air passage Plate is connected, and return air homogenizing plate passes through air passage and condenser（4）It is connected, forms a closed air passage circulatory system.
- 3. low circumstance temperature heat pump drying unit according to claim 1, it is characterised in that in the hydrofuge drying process, newly Wind enters leaf filter（18）, leaf filter（18）Pass through air passage and volume damper（19）It is connected, volume damper （19）Device is returned by air passage and board-like heat（20）It is connected, board-like heat returns device（20）Pass through air passage and fresh air air-introduced machine（21）It is connected Connect, fresh air air-introduced machine（21）Pass through air passage and condenser（4）It is connected, condenser（4）Pass through air passage and drying cycles wind turbine （27）It is connected, drying cycles wind turbine（27）Pass through air passage and air-supply homogenizing plate（23）It is connected, homogenizing plate of blowing（23）Pass through Air passage and hothouse（28）It is connected, hothouse（28）Pass through air passage and return air homogenizing plate（25）It is connected, return air homogenizing plate （25）Device is returned by air passage and board-like heat（20）It is connected, board-like heat returns device（20）Pass through air passage and volume damper（17）It is connected Connect, volume damper（17）Pass through air passage and wet-emitting blower（16）It is connected, wet-emitting blower（16）Pass through air passage and finned steaming Send out device（3）It is connected, finned evaporator（3）Pass through air passage and axial flow blower（9）It is connected, axial flow blower（9）Finally will be wet Air is discharged.
- 4. low circumstance temperature heat pump drying unit according to claim 1, it is characterised in that the main road refrigerant loop passage In, compressor（1）Pass through refrigerant tubing and four-way reversing valve（24）It is connected, four-way reversing valve（24）Pass through refrigerant tubing With finned cooler（4）It is connected, finned cooler（4）Pass through refrigerant tubing and check valve（7）It is connected, check valve （7）Pass through refrigerant tubing and economizer（15）It is connected, economizer（15）Pass through refrigerant tubing and filter（12）It is connected Connect, filter（12）Pass through refrigerant tubing and main road electric expansion valve（6）It is connected, main road electric expansion valve（6）Pass through system Cryogen pipeline and check valve（10）It is connected, check valve（10）Pass through refrigerant tubing and finned evaporator（3）It is connected, wing Plate evaporator（3）Pass through refrigerant tubing and four-way reversing valve（24）It is connected, four-way reversing valve（24）Pass through refrigerant pipe Road and gas-liquid separator（5）It is connected, gas-liquid separator（5）Pass through refrigerant tubing and compressor（1）Return-air interface be connected Connect.
- 5. low circumstance temperature heat pump drying unit according to claim 1, it is characterised in that the compressor Gas-supplying enthalpy-increasing refrigeration In agent return passage, compressor（1）Pass through refrigerant tubing and four-way reversing valve（24）It is connected, four-way reversing valve（24）Pass through Refrigerant tubing and finned cooler（4）It is connected, finned cooler（4）Pass through refrigerant tubing and check valve（7）Phase Connection, check valve（7）Pass through refrigerant tubing and filter（13）It is connected, filter（13）Pass through refrigerant tubing and bypass Electric expansion valve（14）It is connected, bypass electric expansion valve（14）Pass through refrigerant tubing and economizer（15）It is connected, it is economical Device（15）Pass through refrigerant tubing and compressor（1）（Tonifying Qi interface）It is connected.
- 6. low circumstance temperature heat pump drying unit according to claim 1, it is characterised in that the refrigerant system defrosting flow In, compressor（1）Pass through refrigerant tubing and four-way reversing valve（24）It is connected, four-way reversing valve（24）Pass through refrigerant tubing With finned evaporator（3）It is connected, finned evaporator（3）Pass through refrigerant tubing and check valve（11）It is connected, unidirectionally Valve（11）Pass through refrigerant tubing and economizer（15）It is connected, economizer（15）Pass through refrigerant tubing and filter（12）Phase Connection, filter（12）Pass through refrigerant tubing and main road electric expansion valve（6）It is connected, main road electric expansion valve（6）Pass through Refrigerant tubing and check valve（8）It is connected, check valve（8）Pass through refrigerant tubing and finned cooler（4）It is connected, wing Chip type condenser（4）Pass through refrigerant tubing and four-way reversing valve（24）It is connected, four-way reversing valve（24）Pass through refrigerant pipe Road and gas-liquid separator（5）It is connected, gas-liquid separator（5）Pass through refrigerant tubing and compressor（1）Return-air interface be connected Connect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711372636.9A CN107940924A (en) | 2017-12-19 | 2017-12-19 | A kind of low circumstance temperature heat pump drying unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711372636.9A CN107940924A (en) | 2017-12-19 | 2017-12-19 | A kind of low circumstance temperature heat pump drying unit |
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| CN107940924A true CN107940924A (en) | 2018-04-20 |
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Application publication date: 20180420 |