CN107014172A - A kind of three pressure air-cooled heat pump drying systems with recuperation of heat - Google Patents
A kind of three pressure air-cooled heat pump drying systems with recuperation of heat Download PDFInfo
- Publication number
- CN107014172A CN107014172A CN201710389899.4A CN201710389899A CN107014172A CN 107014172 A CN107014172 A CN 107014172A CN 201710389899 A CN201710389899 A CN 201710389899A CN 107014172 A CN107014172 A CN 107014172A
- Authority
- CN
- China
- Prior art keywords
- air
- main road
- outlet
- heat
- compressor
- 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.)
- Granted
Links
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
- 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
- F26B21/004—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
- F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump 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
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
-
- 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
Abstract
The invention discloses a kind of three pressure air-cooled heat pump drying systems with recuperation of heat.The technical problem to be solved is that environment is seriously polluted in existing stoving process, dehumidifying observable index is relatively low, operating cost is high, extreme operating condition heat pump can not normal work, hydrofuge waste heat can not utilize.The present invention includes three pressure air-cooled heat pump subsystems and drying medium circulation subsystem, three described pressure air-cooled heat pump subsystems include main road compressor, main road oil eliminator, main road condenser, recooler, in calm the anger liquid/gas separator, evaporator, low-pressure gas-liquid separator, bypass compressor and bypass oil eliminator, the exhaust outlet of described main road compressor is connected by main road oil eliminator with the import of main road condenser, the outlet of bypass oil eliminator；The exhaust outlet of the bypass compressor is connected with the import of bypass oil eliminator.The annual reliability of operation of air-cooled heat pump drying system, stability and economy are improved using the present invention after above-mentioned technical proposal, application field has been widened.
Description
Technical field
The present invention relates to heat pump drying technology field, and in particular to a kind of three pressure air-cooled heat pumps drying system with recuperation of heat
System.
Background technology
In face of becoming increasingly conspicuous for energy shortage and problem of environmental pollution, traditional fuel oil, combustion gas, fire coal or burn wood etc.
Drying technology is gradually eliminated, and conventional environmentally friendly drying technology mainly has two kinds at present, and one kind is directly added using electrothermal tube
Thermal technology, it is simple to operate, but efficiency is too low, and operating cost is higher, opposite with the energy saving policy of country；Another is to use heat pump
Drying technology, particularly air source heat pump technology, simple in construction, easy to install, energy-conserving and environment-protective, existing Some Enterprises start
Come into operation.But conventional air source heat pump drying technology has the following disadvantages at present：When summer, outside air temperature was too high, air
The condensing pressure of source heat pump is too high, compressor pressure ratios are excessive, excessive discharge temperature, its heating capacity and Energy Efficiency Ratio drastically under
Drop, in some instances it may even be possible to cause the frequent protectiveness of compressor to be shut down；When equally outside air temperature is too low in the winter time, the evaporation of air source heat pump
Temperature is too low, evaporator surface frosting is serious, compressor pressure ratios are excessive, excessive discharge temperature, its heating capacity and Energy Efficiency Ratio
Drastically decline, in some instances it may even be possible to cause device to be not normally functioning.In a word, when outdoor temperature is too high or too low, regular air source
The protrusion technical problem that heat pump is present, has had a strong impact on popularization and application of the air source heat pump in drying field.
Moreover, the hot blast produced at present using heat pump drying technology becomes tide due to absorbing the large quantity of moisture of material
It is wet, system can not recycling, be often exhausted directly to outside baking room, while fill into the fresh air of outdoor from new heating,
The waste of the energy has been thereby resulted in, the energy consumption of heat pump drying technology is added.
The content of the invention
The technical problem to be solved in the present invention is that environment is seriously polluted in existing stoving process, dehumidifying observable index is relatively low, fortune
Row cost is high, extreme operating condition heat pump can not normal work, hydrofuge waste heat can not utilize that there is provided a kind of three pressure winds with recuperation of heat
Cold-heat pump drying system.
In order to solve the above technical problems, the present invention uses following technical proposals：A kind of three pressure winds with recuperation of heat are cold and hot
Pump drying system, including three pressure air-cooled heat pump subsystems and drying medium circulation subsystem, three described pressure air-cooled heat pumps
Subsystem include main road compressor, main road oil eliminator, main road condenser, recooler, in calm the anger liquid/gas separator, evaporator, low
Calm the anger liquid/gas separator, bypass compressor and bypass oil eliminator, the exhaust outlet of described main road compressor passes through main road oil separation
Device is connected with the import of main road condenser, the outlet of bypass oil eliminator；The outlet of the main road condenser and recooler
Main road import is connected；The import that the main road of the recooler exports liquid/gas separator of being calmed the anger with is connected；Medium pressure gas-liquid
Bypass import, the import of evaporator of two outlets of separator respectively with recooler are connected；The outlet of the evaporator leads to
The air entry that low pressure gas liquid/gas separator is crossed with main road compressor is connected；Bypass outlet and the bypass compressor of the recooler
Air entry is connected；The exhaust outlet of the bypass compressor is connected with the import of bypass oil eliminator；Described drying medium is followed
Loop subsystems are included between auxiliary PTC electric heater, medium heating chamber and material drying, pass through between medium heating chamber and material drying
Air channel is connected, and main road condenser and auxiliary PTC electric heater are arranged in medium heating chamber.
In the air channel of described drying medium circulation subsystem provided with return air fan, hydrofuge exhaust fan, heat reclamation device,
Fresh-air fan, the air outlet of the medium heating chamber is connected by the air inlet between air channel and material drying；Between material drying
Air outlet be connected respectively with the air inlet of return air fan and the air inlet of hydrofuge exhaust fan；The air-out of the return air fan
Mouth is connected with the air outlet of fresh-air fan and the air inlet of medium heating chamber respectively by air channel；The hydrofuge exhaust fan
Air outlet is connected with the air draft side-entrance of heat reclamation device；The air draft side outlet of the heat reclamation device passes through air channel and outdoor
Wind exhausting outlet is connected；The fresh air side outlet of the heat reclamation device is connected by air channel with the import of fresh-air fan.
Temperature sensor, humidity sensor are provided with the air channel that air outlet between material drying is connected；The recuperation of heat
The fresh air side-entrance of device is provided with fresh air screen pack.
Between described main road oil eliminator and main road condenser be provided with the first check valve, the outlet of bypass oil eliminator with
The second check valve is provided between main road condenser；The outlet of first check valve goes out with main road condenser, second check valve respectively
Mouth is connected.
Described recooler main road outlet and in calm the anger liquid/gas separator import between be sequentially provided with device for drying and filtering, sight
Examine mirror, the first expansion valve；Calmed the anger in described and the second expansion valve is provided between the lower exit port and evaporator of liquid/gas separator；It is described
Evaporating pressure regulating valve is provided between the bypass outlet of recooler and the air entry of bypass compressor.
The first described expansion valve and the second expansion valve are hand expansion valve, choke type expansion valve, float-ball type expansion valve, heat
Any one in power expansion valve, electric expansion valve.
Described main road compressor and bypass compressor for determine frequency scroll compressor, determine frequency rolling rotor compressor,
Any one in inverter scroll compressor, frequency conversion rolling rotor compressor.
Described main road condenser and evaporator are fin-tube heat exchanger, stacked heat exchanger, parallel flow heat exchanger
In any one.
Described evaporating pressure regulating valve be a kind of ratio adjusting valve controlled by upstream pressure, proportional integration regulating valve,
Any one in proportion differential regulating valve, PID regulating valve.
Described recooler is any one structure type in plate type heat exchanger, double-tube heat exchanger, flash evaporation；Described
Heat reclamation device is any one of Exposure degree type heat exchanger, total-heat exchanger.
It is by matching bypass regulation on the basis of conventional heat pump drying system using the present invention of above-mentioned technical proposal
System and heat reclamation device, bypass regulating system is main to be adjusted by bypass compressor, bypass oil eliminator, recooler and evaporating pressure
Valve etc. is constituted, and the system has following major advantage：
1 can solve summer high temperature refrigeration work mould by the auxiliary adjustment of bypass regulating system, the air-cooled heat pump drying system
The protrusion that condensing pressure is too high under formula, compressor pressure ratios are excessive, excessive discharge temperature, the frequent protectiveness of compressor are shut down is asked
Topic, can solve winter low temperature and heat that evaporating temperature under mode of operation is too low, evaporator surface frosting serious, compressor pressure ratios again
The outstanding problem that excessive, excessive discharge temperature, heating capacity and Energy Efficiency Ratio drastically decline, improves air-cooled heat pump drying system complete
Year reliability of operation, stability and economy, have widened the application field of air-cooled heat pump drying system.
2 by the auxiliary adjustment of bypass regulating system, and the heating capacity of the air-cooled heat pump drying system can be with drying materials
The requirement of technique and change rapidly, significantly improve the dehumidifying observable index of material drying, it is ensured that the layer color of material drying, quality
And fragrance.
3 have carried out recuperation of heat by heat reclamation device to hydrofuge waste heat, and the air-cooled heat pump drying system cost performance is high, energy-conservation
Environmental protection.
The present invention solves the defect of existing heat pump drying technology, with extensive market application foreground and huge market
Potentiality, it is adaptable to a wide range of popularization and application.
Brief description of the drawings
Fig. 1 is structure principle chart of the invention；
Fig. 2 is single stage compress drying work model process figure；
Fig. 3 is single stage compress+recuperation of heat drying work model process figure；
Fig. 4 is three pressure drying work model process figures；
Fig. 5 is three pressure+recuperation of heat drying work model process figure；
Fig. 6 is bypass+PTC+ recuperation of heat drying work model process figures.
Figure number explanation：1 main road compressor, 2 main road oil eliminators, 3 main road condensers, 4 recoolers, 5 devices for drying and filtering, 6
Peephole, 7 first expansion valves, liquid/gas separator of calming the anger in 8,9 second expansion valves, 10 evaporators, 11 low-pressure gas-liquid separators, 12 steam
Send out pressure-regulating valve, 13 bypass compressors, 14 bypass oil eliminators, 15 first check valves, 16 second check valves, 17 auxiliary PTC
Electric heater, 18 return air fans, 19 hydrofuge exhaust fans, 20 heat reclamation devices, 21 fresh air screen packs, 22 fresh-air fans, 23 temperature
Spend between sensor, 24 humidity sensors, 25 medium heating chambers, 26 material dryings, 27 materials；A air draft side-entrances, b air drafts side goes out
Mouthful, c fresh air side-entrances, d fresh air side outlets.
Embodiment
As shown in figure 1, the present invention includes three pressure air-cooled heat pump subsystems and drying medium circulation subsystem, described three
Pressure air-cooled heat pump subsystem include main road compressor 1, main road oil eliminator 2, main road condenser 3, recooler 4, in calm the anger liquid
Separator 8, evaporator 10, low-pressure gas-liquid separator 11, bypass compressor 13 and bypass oil eliminator 14, described main road compression
The exhaust outlet of machine 1 is connected by main road oil eliminator 2 with the import of main road condenser 3, the outlet of bypass oil eliminator 14；Institute
The outlet of main road condenser 3 is stated with the main road import of recooler 4 to be connected；The main road of the recooler 4 exports liquid of being calmed the anger with
The import of separator 8 is connected；Bypass import, the evaporation of two outlets of medium pressure gas-liquid separator 8 respectively with recooler 4
The import of device 10 is connected；The air entry that the outlet of the evaporator 10 passes through low-pressure gas-liquid separator 11 and main road compressor 1
It is connected；The bypass outlet of the recooler 4 is connected with the air entry of bypass compressor 13；The row of the bypass compressor 13
Gas port is connected with the import of bypass oil eliminator 14；The exhaust outlet of bypass compressor 13 passes sequentially through bypass oil eliminator 14,
Import, the outlet of the first check valve 15 of two check valves 16 respectively with main road condenser 3 are connected；Described drying medium circulation
Subsystem is included 26 between auxiliary PTC electric heater 17, medium heating chamber 25 and material drying, medium heating chamber 25 and material drying
Between 26 connected by air channel, main road condenser 3 and auxiliary PTC electric heater 17 are arranged in medium heating chamber 25.Evaporator 10
For the wind-cooled evaporator of outside.
Return air fan 18, hydrofuge exhaust fan 19, recuperation of heat are provided with the air channel of described drying medium circulation subsystem
Device 20, fresh-air fan 22, the air outlet of the medium heating chamber 25 are connected by between air channel and material drying 26 air inlet
Connect；26 air outlet is connected with the air inlet of return air fan 18 and the air inlet of hydrofuge exhaust fan 19 respectively between material drying
Connect；Air outlet and the air intake of medium heating chamber 25 of the air outlet of the return air fan 18 by air channel respectively with fresh-air fan 22
Mouth is connected；The air outlet of the hydrofuge exhaust fan 19 is connected with the air draft side-entrance a of heat reclamation device 20；The heat is returned
The air draft side outlet b of receiving apparatus 20 is connected by air channel with outdoor wind exhausting outlet；The fresh air side of the heat reclamation device 20 goes out
Mouth d is connected by air channel with the import of fresh-air fan 22.Described return air fan 18, hydrofuge exhaust fan 19, fresh-air fan
22 it is frequency conversion fan, determines any one in frequency blower fan, gear shift blower fan.
Temperature sensor 23, humidity sensor 24 are provided with the air channel that 26 air outlet is connected between material drying；It is described
The fresh air side-entrance c of heat reclamation device 20 is provided with fresh air screen pack 21.
The first check valve 15 is provided between described main road oil eliminator 2 and main road condenser 3, bypass oil eliminator 14
The second check valve 16 is provided between outlet and main road condenser 3；The outlet of first check valve 15 respectively with main road condenser 3,
The outlet of two check valves 16 is connected.
Described recooler 4 main road outlet and in calm the anger liquid/gas separator 8 import between be sequentially provided with device for drying and filtering
5th, peephole 6, the first expansion valve 7；Calm the anger swollen provided with second between the lower exit port and evaporator 10 of liquid/gas separator 8 in described
Swollen valve 9；Evaporating pressure regulating valve 12 is provided between the bypass outlet of the recooler 4 and the air entry of bypass compressor 13.
The first described expansion valve 7 and the second expansion valve 9 be hand expansion valve, choke type expansion valve, float-ball type expansion valve,
Any one in heating power expansion valve, electric expansion valve.
Described main road compressor 1 and bypass compressor 13 compress to determine frequency scroll compressor, determining frequency rolling rotor-type
Any one in machine, inverter scroll compressor, frequency conversion rolling rotor compressor.
Described main road condenser 3 and evaporator 10 are fin-tube heat exchanger, stacked heat exchanger, parallel flow type heat exchange
Any one in device.
Described evaporating pressure regulating valve 12 is a kind of ratio adjusting valve controlled by upstream pressure, proportional integration regulation
Any one in valve, proportion differential regulating valve, PID regulating valve.Upstream pressure is evaporating pressure.
Described recooler 4 is any one structure type in plate type heat exchanger, double-tube heat exchanger, flash evaporation；It is described
Heat reclamation device 20 be Exposure degree type heat exchanger, total-heat exchanger any one.
The specific annexation of three pressure air-cooled heat pump subsystems：The exhaust outlet of main road compressor 1 passes sequentially through main road oil
Import, the outlet of the second check valve 16 of separator 2, the first check valve 15 respectively with main road condenser 3 are connected；The main road
The outlet of condenser 3 is connected with the main road import of recooler 4；The main road outlet of the recooler 4 passes sequentially through dry filter
Calmed the anger with the import of liquid/gas separator 8 of device 5, peephole 6, the first expansion valve 7 is connected；The two of medium pressure gas-liquid separator 8
Bypass import, the import of the second expansion valve 9 of individual outlet respectively with recooler 4 are connected；The outlet of second expansion valve 9 according to
It is secondary to be connected by outside wind-cooled evaporator 10, low-pressure gas-liquid separator 11 with the air entry of main road compressor 1；It is described cold again
The bypass outlet of device 4 is connected by evaporating pressure regulating valve 12 with the air entry of bypass compressor 13；The bypass compressor
13 exhaust outlet passes sequentially through the import respectively with main road condenser 3 of bypass oil eliminator 14, the second check valve 16, first unidirectional
The outlet of valve 15 is connected.
Dry the specific annexation of medium circulation subsystem：Successively be provided with medium heating chamber 25 main road condenser 3,
PTC electric heater 17 is aided in, its air outlet is connected by between air channel and material drying 26 air inlet；Its air outlet passes through peace
Air channel air inlet and hydrofuge/exhaust fan 19 respectively with return air fan 18 equipped with temperature sensor 23, humidity sensor 24
Air inlet be connected；Air outlet and medium of the air outlet of the return air fan 18 by air channel respectively with fresh-air fan 22 add
The air inlet in hot cell 25 is connected；The air draft side-entrance phase of the air outlet of the hydrofuge/exhaust fan 19 and heat reclamation device 20
Connection；The air draft side outlet of the heat reclamation device 20 is connected by air channel with outdoor wind exhausting outlet；The fresh air screen pack
21 are installed on the fresh air side-entrance of heat reclamation device 20；The fresh air side outlet of the heat reclamation device 20 passes through air channel and fresh air wind
The import of machine 22 is connected.
Combined by the Optimized Matching of three pressure air-cooled heat pump subsystems and drying medium circulation subsystem, PLC technology
Five kinds of mode of operations can be achieved in device PLC Intelligent adjustments, the present invention：
（1）Single stage compress drying work pattern
Fig. 2 is single stage compress drying work model process figure, when outside air temperature is approximately between -5 DEG C ~ 45 DEG C, and
And drying materials operation just starts, and when system does not need energy and temperature and humidity regulation, can use this mode of operation.Now main road pressure
Contracting machine 1, the blower fan of outside wind-cooled evaporator 10 and return air fan 18 start, bypass compressor 13, auxiliary PTC electric heater
17th, hydrofuge exhaust fan 19, fresh-air fan 22 are closed.The workflow of three pressure air-cooled heat pump subsystems：The row of main road compressor 1
The high temperature and high pressure gaseous refrigerant gone out passes sequentially through main road oil eliminator 2, the first check valve 15 and enters main road condenser 3, release
Medium is dried in the circulation that heat is introduced through return air fan 18, is condensed into supercooling or saturation liquid refrigerant, is then led to successively
Cross recooler 4, device for drying and filtering 5, peephole 6 and enter the first expansion valve 7, be changed into after the flow restriction control of the first expansion valve 7
The gas-liquid two-phase cold-producing medium of medium temperature and medium pressure, liquid/gas separator 8 of being calmed the anger in carries out gas-liquid separation, then in calm the anger liquid/gas separator 8
The liquid refrigerant of bottom is changed into the gas-liquid two-phase cold-producing medium of low-temp low-pressure after the flow restriction control of the second expansion valve 9 again, enters
Enter outside wind-cooled evaporator 10 and absorb the air-source heat that blower fan is introduced, evaporation is changed into the superheated refrigerant steam of low pressure, so
By low-pressure gas-liquid separator 11 after gas-liquid separation enter the air entry of main road compressor 1, by the pressure of main road compressor 1
After contracting, high temperature and high pressure gaseous refrigerant is discharged, subsequent cycle is initially entered.Dry the workflow of medium circulation subsystem：Wind
Low temperature and high humidity drying medium in road enters medium heating chamber 25 through return air fan 18, absorbs the heat of the release of main road condenser 3
Heated up after amount, be changed into the drying medium of high temperature low humidity, then discharged through air channel into 26 between material drying after heated material 27
Heat cools, while absorbing the moisture of material, is changed into the drying medium of low temperature and high humidity, is then passed by the temperature in air channel
After sensor 23, humidity sensor 24 are detected, subsequent cycle is started into return air fan 8.
（2）Single stage compress+recuperation of heat drying work pattern
Fig. 3 be single stage compress+recuperation of heat drying work model process figure, when outside air temperature be approximately at -5 DEG C ~ 45 DEG C it
Between when, and in drying materials running, the drying humidity of media that temperature sensor 23, humidity sensor 24 are detected is excessive
When, this mode of operation can be used.Now main road compressor 1, the blower fan of outside wind-cooled evaporator 10, return air fan 18, hydrofuge
Exhaust fan 19 and fresh-air fan 22 start, and bypass compressor 13, auxiliary PTC electric heater 17 are closed.Three pressure winds are cold and hot
The workflow of pump subsystem is identical with single stage compress drying work pattern.Dry the workflow of medium circulation subsystem：Come
From the drying medium of the low temperature and high humidity of 26 discharges between material drying, by temperature sensor 23, the humidity sensor in air channel
Device 24 is divided into two parts after detecting, a part enters medium heating chamber 25 by return air fan 18, and a part passes through hydrofuge heat extraction
Blower fan 19 enters row after the air draft side of heat reclamation device 20 release heat cooling and arrives outdoor, and the fresh air of outdoor low temperature and low humidity degree is passed through
Fresh air screen pack 21 enters the fresh air side of heat reclamation device 20 and absorbed after heat heating, enters medium heating chamber by fresh-air fan 22
25, the partially desiccated medium introduced with return air fan 18 is mixed, and is changed into the drying medium of low temperature and low humidity degree, then absorbs main road cold
The heat that condenser 3 discharges, is changed into the drying medium of high temperature low humidity, then enters 26, heated material 27 between material drying through air channel
The cooling of release heat, while absorbing the moisture of material, is changed into the drying medium of low temperature and high humidity, then by air channel afterwards
After temperature sensor 23, humidity sensor 24 are detected, start subsequent cycle.
（3）Three pressure drying work patterns
Fig. 4 is three pressure drying work model process figures, when outside air temperature is approximately at 46 DEG C ~ 55 DEG C or -20 DEG C ~ -6 DEG C
Between when, and drying materials operation just starts, and system does not need energy and during temperature and humidity regulation, can use this mode of operation.
Now main road compressor 1, bypass compressor 13, the blower fan of outside wind-cooled evaporator 10 and return air fan 18 start, and aid in PTC
Electric heater 17, hydrofuge exhaust fan 19, fresh-air fan 22 are closed.The workflow of three pressure air-cooled heat pump subsystems：Main road
The high temperature and high pressure gaseous refrigerant that compressor 1 is discharged passes sequentially through main road oil eliminator 2, the first check valve 15 and by the second list
Mixed to the high temperature and high pressure gaseous refrigerant of valve 16, subsequently into main road condenser 3, release heat draws through return air fan 18
The circulation drying medium entered, is condensed into supercooling or saturation liquid refrigerant, into the main road side release heat warp of recooler 4
The saturation gaseous refrigerant of the middle temperature of middle pressure of the bypass side of recooler 4, further supercooling is changed into the larger liquid refrigerant of degree of supercooling,
Device for drying and filtering 5, peephole 6 are passed sequentially through again and enters the first expansion valve 7, are changed into after the flow restriction control of the first expansion valve 7
The gas-liquid two-phase cold-producing medium of medium temperature and medium pressure, liquid/gas separator 8 of being calmed the anger in is divided into two-way after carrying out gas-liquid separation, wherein being all the way
The saturation liquid refrigerant for the middle temperature of middle pressure isolated, the bottom of liquid/gas separator 8 discharge of being calmed the anger in, then expands by second again
It is changed into the gas-liquid two-phase cold-producing medium of low-temp low-pressure after the flow restriction control of valve 9, absorbing blower fan into outside wind-cooled evaporator 10 draws
The air-source heat entered, evaporation is changed into the superheated refrigerant steam of low pressure, then carries out gas-liquid point through low-pressure gas-liquid separator 11
From the air entry of rear entrance main road compressor 1, after the compression of main road compressor 1, high temperature and high pressure gaseous refrigerant is discharged, is opened
Beginning enters subsequent cycle.Another road is the saturation gaseous refrigerant for the middle temperature of middle pressure isolated, the top of liquid/gas separator 8 of being calmed the anger in
Discharge, absorbs supercooling or saturation liquid refrigerant heat through the main road side of recooler 4 into the bypass side of recooler 4, was changed into
Hot gaseous refrigerant, then pressure regulation is throttled into the air entry of bypass compressor 13 by evaporating pressure regulating valve 12, by bypass
The compression discharge high temperature and high pressure gaseous refrigerant of compressor 13, then pass sequentially through bypass oil eliminator 14, the second check valve 16 with
Mixed by the high temperature and high pressure gaseous refrigerant of the first check valve 15, into main road condenser 3, initially enter subsequent cycle.Dry
The workflow of dry medium circulation subsystem：Low temperature and high humidity drying medium in air channel enters medium through return air fan 18 and heated
Room 26, absorbs and is heated up after the heat of the release of main road condenser 3, be changed into the drying medium of high temperature low humidity, then enter through air channel
Heat cooling is discharged 26 between material drying, after heated material 27, while absorbing the moisture of material, is changed into the baking of low temperature and high humidity
Dry medium, then after the temperature sensor 23 in air channel, humidity sensor 24 are detected, starts next into return air fan 8
Circulation.
（4）Three pressure+recuperation of heat drying work pattern
Fig. 5 is three pressure+recuperation of heat drying work model process figure, when outside air temperature is approximately at 46 DEG C ~ 55 DEG C or -20
DEG C ~ -6 DEG C between when, and in drying materials running, the drying medium that temperature sensor 23, humidity sensor 24 are detected
When humidity is excessive, this mode of operation can be used.Now main road compressor 1, bypass compressor 13, outside wind-cooled evaporator 10
Blower fan, return air fan 18, hydrofuge exhaust fan 19, fresh-air fan 22 start, and auxiliary PTC electric heater 17 is closed.Three pressure winds
The workflow of cold-heat pump subsystem is identical with three pressure drying work patterns.Dry medium circulation subsystem workflow with
Single stage compress+recuperation of heat drying work pattern is identical.
（5）Bypass+PTC+ recuperation of heat drying work patterns
Fig. 6 is bypass+PTC+ recuperation of heat drying work model process figures, when outside air humidity is larger, and drying materials
In running, the frosting of outside wind-cooled evaporator 10 is serious, the drying medium that temperature sensor 23, humidity sensor 24 are detected
When humidity is excessive, this mode of operation can be used.Now bypass compressor 13, return air fan 18, auxiliary PTC electric heater 17, row
Wet exhaust fan 19, fresh-air fan 22 start, and main road compressor 1, the blower fan of outside wind-cooled evaporator 10 are closed.Three pressure winds
The workflow of cold-heat pump subsystem：The high temperature and high pressure gaseous refrigerant that bypass compressor 13 is discharged passes sequentially through bypass oil separation
Device 14, the second check valve 16 enter main road condenser 3, and release heat is through following that return air fan 18 and fresh-air fan 22 are introduced
Ring dries medium, is condensed into supercooling or saturation liquid refrigerant, and heat is discharged through recooler into the main road side of recooler 4
The saturation gaseous refrigerant of the middle temperature of middle pressure of 4 bypass sides, further supercooling is changed into the larger liquid refrigerant of degree of supercooling, then successively
First expansion valve 7 is entered by device for drying and filtering 5, peephole 6, middle middle benefit gas is changed into after the flow restriction control of the first expansion valve 7
The gas-liquid two-phase cold-producing medium of pressure, liquid/gas separator 8 of being calmed the anger in carries out gas-liquid separation, the saturation gaseous state for the middle temperature of middle pressure isolated
Refrigerant, the top of liquid/gas separator 8 discharge of being calmed the anger in, the supercooling through the main road side of recooler 4 is absorbed into the bypass side of recooler 4
Or saturation liquid refrigerant heat, it is changed into overheating gaseous refrigerant, then enter auxiliary by the throttling pressure regulation of evaporating pressure regulating valve 12
The air entry of road compressor 13, eventually passes the compression discharge high temperature and high pressure gaseous refrigerant of bypass compressor 13, initially enters down
One circulation.Dry the workflow of medium circulation subsystem：Come from the drying of the low temperature and high humidities of 26 discharges between material drying
Medium, is divided into two parts, a part passes through return air fan after the temperature sensor 23 in air channel, humidity sensor 24 are detected
18 enter medium heating chamber 25, and a part enters the air draft side of heat reclamation device 20 release heat cooling by hydrofuge exhaust fan 19
Row is to outdoor afterwards, and the fresh air of outdoor low temperature and low humidity degree enters the fresh air side of heat reclamation device 20 by fresh air screen pack 21 and absorbs heat
After amount heating, enter medium heating chamber 25 by fresh-air fan 22, the partially desiccated medium introduced with return air fan 18 is mixed, become
For the drying medium of low temperature and low humidity degree, the latent heat of phase change and auxiliary PTC of the gaseous refrigerant release of main road condenser 3 are successively absorbed
Heated up step by step after the heat of electric heater 17, be changed into the drying medium of high temperature low humidity, then entered through air channel 26 between material drying,
Heat cooling is discharged after heated material 27, while absorbing the moisture of material, is changed into the drying medium of low temperature and high humidity, Ran Houjing
Cross the temperature sensor 23 in air channel, after the detection of humidity sensor 24, start subsequent cycle.
Claims (10)
1. a kind of three pressure air-cooled heat pump drying systems with recuperation of heat, it is characterised in that：Including three pressure air-cooled heat pump subsystems
System and drying medium circulation subsystem, three described pressure air-cooled heat pump subsystems include main road compressor（1）, main road oil separation
Device（2）, main road condenser（3）, recooler（4）, in calm the anger liquid/gas separator（8）, evaporator（10）, low-pressure gas-liquid separator
（11）, bypass compressor（13）With bypass oil eliminator（14）, described main road compressor（1）Exhaust outlet pass through main road oil
From device（2）With main road condenser（3）Import, bypass oil eliminator（14）Outlet be connected；
The main road condenser（3）Outlet and recooler（4）Main road import be connected；The recooler（4）Main road go out
Mouthful calmed the anger liquid/gas separator with（8）Import be connected；
Medium pressure gas-liquid separator（8）Two outlet respectively with recooler（4）Bypass import, evaporator（10）Import
It is connected；The evaporator（10）Outlet pass through low-pressure gas-liquid separator（11）With main road compressor（1）Air entry be connected
Connect；
The recooler（4）Bypass outlet with bypass compressor（13）Air entry be connected；The bypass compressor（13）
Exhaust outlet and bypass oil eliminator（14）Import be connected；
Described drying medium circulation subsystem includes auxiliary PTC electric heater（17）, medium heating chamber（25）And material drying
Between（26）, medium heating chamber（25）Between material drying（26）Connected by air channel, main road condenser（3）Add with auxiliary PTC electricity
Hot device（17）It is arranged on medium heating chamber（25）It is interior.
2. the three pressure air-cooled heat pump drying systems according to claim 1 with recuperation of heat, it is characterised in that：
Return air fan is provided with the air channel of described drying medium circulation subsystem（18）, hydrofuge exhaust fan（19）, recuperation of heat
Device（20）, fresh-air fan（22）, the medium heating chamber（25）Air outlet pass through between air channel and material drying（26）Enter
Air port is connected；Between material drying（26）Air outlet respectively with return air fan（18）Air inlet and hydrofuge exhaust fan（19）
Air inlet be connected；
The return air fan（18）Air outlet by air channel respectively with fresh-air fan（22）Air outlet and medium heating chamber
（25）Air inlet be connected；The hydrofuge exhaust fan（19）Air outlet and heat reclamation device（20）Air draft side-entrance
（a）It is connected；
The heat reclamation device（20）Air draft side outlet（b）It is connected by air channel with outdoor wind exhausting outlet；The recuperation of heat
Device（20）Fresh air side outlet（d）Pass through air channel and fresh-air fan（22）Import be connected.
3. the three pressure air-cooled heat pump drying systems according to claim 2 with recuperation of heat, it is characterised in that：With drying object
Between material（26）The connected air channel of air outlet in provided with temperature sensor（23）, humidity sensor（24）；The heat reclamation device
（20）Fresh air side-entrance（c）Provided with fresh air screen pack（21）.
4. the three pressure air-cooled heat pump drying systems according to claim 1 with recuperation of heat, it is characterised in that：Described master
Road binders separator（2）With main road condenser（3）Between be provided with the first check valve（15）, bypass oil eliminator（14）Outlet and master
Road condenser（3）Between be provided with the second check valve（16）；First check valve（15）Outlet respectively with main road condenser（3）Enter
Mouth, the second check valve（16）Outlet be connected.
5. the three pressure air-cooled heat pump drying systems according to claim 1 with recuperation of heat, it is characterised in that：It is described again
Cooler（4）Main road outlet calmed the anger liquid/gas separator with（8）Import between be sequentially provided with device for drying and filtering（5）, peephole
（6）, the first expansion valve（7）；Calmed the anger in described liquid/gas separator（8）Lower exit port and evaporator（10）Between provided with second swollen
Swollen valve（9）；The recooler（4）Bypass outlet with bypass compressor（13）Air entry between be provided with evaporating pressure regulating valve
（12）.
6. the three pressure air-cooled heat pump drying systems according to claim 5 with recuperation of heat, it is characterised in that：Described
One expansion valve（7）With the second expansion valve（9）For hand expansion valve, choke type expansion valve, float-ball type expansion valve, heating power expansion valve,
Any one in electric expansion valve.
7. the three pressure air-cooled heat pump drying systems according to claim 1 with recuperation of heat, it is characterised in that：Described master
Road compressor（1）With bypass compressor（13）To determine frequency scroll compressor, determining frequency rolling rotor compressor, frequency-changing cyclone formula
Any one in compressor, frequency conversion rolling rotor compressor.
8. the three pressure air-cooled heat pump drying systems according to claim 1 with recuperation of heat, it is characterised in that：Described master
Road condenser（3）And evaporator（10）To be any one in fin-tube heat exchanger, stacked heat exchanger, parallel flow heat exchanger
Kind.
9. the three pressure air-cooled heat pump drying systems according to claim 1 with recuperation of heat, it is characterised in that：Described steaming
Send out pressure-regulating valve（12）For a kind of ratio adjusting valve controlled by upstream pressure, proportional integration regulating valve, proportion differential regulation
Any one in valve, PID regulating valve.
10. the three pressure air-cooled heat pump drying systems according to claim 2 with recuperation of heat, it is characterised in that：Described
Recooler（4）For any one structure type in plate type heat exchanger, double-tube heat exchanger, flash evaporation；Described heat reclamation device
（20）For any one of Exposure degree type heat exchanger, total-heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389899.4A CN107014172B (en) | 2017-05-27 | 2017-05-27 | Three-pressure air-cooled heat pump drying system with heat recovery function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389899.4A CN107014172B (en) | 2017-05-27 | 2017-05-27 | Three-pressure air-cooled heat pump drying system with heat recovery function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107014172A true CN107014172A (en) | 2017-08-04 |
| CN107014172B CN107014172B (en) | 2023-04-18 |
Family
ID=59452604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710389899.4A Active CN107014172B (en) | 2017-05-27 | 2017-05-27 | Three-pressure air-cooled heat pump drying system with heat recovery function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107014172B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819750A (en) * | 2021-07-21 | 2021-12-21 | 广东申菱环境系统股份有限公司 | Heat pump drying unit with sterilization function and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012152199A1 (en) * | 2011-05-06 | 2012-11-15 | Rong Guohua | Air conditioning unit for heat recovery from heat pump |
| CN104949495A (en) * | 2015-07-03 | 2015-09-30 | 河南天赫伟业能源科技有限公司 | Intelligent high temperature heat pump drying system with damp-heat recovery |
| CN206803623U (en) * | 2017-05-27 | 2017-12-26 | 中原工学院 | A kind of three pressure air-cooled heat pump drying systems with recuperation of heat |
-
2017
- 2017-05-27 CN CN201710389899.4A patent/CN107014172B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012152199A1 (en) * | 2011-05-06 | 2012-11-15 | Rong Guohua | Air conditioning unit for heat recovery from heat pump |
| CN104949495A (en) * | 2015-07-03 | 2015-09-30 | 河南天赫伟业能源科技有限公司 | Intelligent high temperature heat pump drying system with damp-heat recovery |
| CN206803623U (en) * | 2017-05-27 | 2017-12-26 | 中原工学院 | A kind of three pressure air-cooled heat pump drying systems with recuperation of heat |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819750A (en) * | 2021-07-21 | 2021-12-21 | 广东申菱环境系统股份有限公司 | Heat pump drying unit with sterilization function and control method thereof |
| CN113819750B (en) * | 2021-07-21 | 2022-09-30 | 广东申菱环境系统股份有限公司 | Heat pump drying unit with sterilization function and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107014172B (en) | 2023-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107024033A (en) | A kind of closed type heat pump drying system with dehumidification function | |
| CN104949495B (en) | Intelligent high temperature heat pump drying system with damp-heat recovery | |
| CN101487609B (en) | Liquid-dehumidifying multifunctional air source heat pump system and its operation method | |
| CN107036405A (en) | A kind of recovery type heat air-cooled heat pump drying system suitable for the big temperature difference | |
| CN209310455U (en) | A kind of composition open and close formula Analysis of Heat Pump Drying System being rapidly heated | |
| CN109539762A (en) | A kind of composition open and close formula circulating heat pump drying system | |
| CN206803621U (en) | A kind of recovery type heat air-cooled heat pump drying system suitable for the big temperature difference | |
| CN202973362U (en) | Air exhaust efficient two-stage heat recovery fresh air handling unit | |
| WO2021227697A1 (en) | Low-temperature drying device for cooling discharge sludge and recovering heat from sludge, and control method thereof | |
| CN201302243Y (en) | Energy-saving full fresh air dehumidifier machine | |
| CN206078998U (en) | Intelligent heat pump tobacco drying system is assisted to solar energy | |
| CN104949477B (en) | A kind of solar energy assists intelligent high temperature heat pump drying system | |
| CN105423457B (en) | Air-conditioning system | |
| CN102620477B (en) | Double-cold-source full fresh air heat pump dehumidification unit | |
| CN205940077U (en) | Take sensible heat recovery's intelligent heat pump tobacco drying system | |
| CN206803623U (en) | A kind of three pressure air-cooled heat pump drying systems with recuperation of heat | |
| CN104329923A (en) | Method and equipment for drying biomass fuel by using residual heat of flue gas of power plant | |
| CN104949496A (en) | High-temperature heat pump drying system with intelligent adjusting function | |
| CN107014076A (en) | A kind of three pressure high-efficiency air cooling Teat pump boilers suitable for high and low temperature environment | |
| CN107014173A (en) | A kind of closed type heat pump drying system of direct-expansion type solar energy auxiliary | |
| CN108444278A (en) | Continuous displaced type dehumidifying drying equipment | |
| CN210070102U (en) | Ground pipe laying water source dehumidification humidification fresh air unit | |
| CN206803551U (en) | Closed type heat pump drying system with dehumidification function | |
| CN207335297U (en) | Closed type heat pump drying system with interior radiant heat transfer | |
| CN202835916U (en) | Evaporative heat pump dehumidifying temperature-regulating unit |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 451191 No. 1 Huaihe Road, Shuang Hu Economic and Technological Development Zone, Xinzheng, Zhengzhou, Henan Applicant after: ZHONGYUAN University OF TECHNOLOGY Address before: 451191 No. 1 Huaihe Road, Shuanghu Town Economic and Technological Development Zone, Zhengzhou City, Henan Province Applicant before: Zhongyuan University of Technology |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |