CN207335297U - Closed type heat pump drying system with interior radiant heat transfer - Google Patents
Closed type heat pump drying system with interior radiant heat transfer Download PDFInfo
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- CN207335297U CN207335297U CN201720609968.3U CN201720609968U CN207335297U CN 207335297 U CN207335297 U CN 207335297U CN 201720609968 U CN201720609968 U CN 201720609968U CN 207335297 U CN207335297 U CN 207335297U
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Abstract
It the utility model is related to heat pump drying technology field, and in particular to there is the closed type heat pump drying system of interior radiant heat transfer.Including three pressure air-cooled heat pump subsystems and closed type drying medium circulation subsystem, three pressure air-cooled heat pump subsystems include main road compressor, main road oil eliminator, main road condenser, recooler, device for drying and filtering, peephole, in calm the anger liquid/gas separator, evaporator, low-pressure gas-liquid separator, bypass compressor, bypass oil eliminator, bypass condenser and connecting pipe；Closed type drying medium circulation subsystem is included between auxiliary PTC electric heater, circulating fan, material drying, temperature sensor, humidity sensor, moist chamber, condensate outlet, medium heating chamber and connection air passage；The utility model solves the defects of existing heat pump drying technology, has the characteristics that high, energy saving, material drying the quality of drying efficiency is good and hygienic, has extensive market application foreground and huge market potential, is promoted and applied suitable for a wide range of.
Description
Technical field
Heat pump drying technology field is the utility model is related to, particularly relates to the closed type heat pump with interior radiant heat transfer
Drying 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 current common environmentally friendly drying technology mainly has two kinds, and one kind is direct using electrothermal tube
Heating technique, it is easy to operate, but efficiency is too low, and operating cost is higher, opposite with the energy saving policy of country；Another kind is using heat
Drying technology, particularly air source heat pump technology, simple in structure, easy to install, energy conservation and environmental protection are pumped, existing Some Enterprises are opened
Beginning comes into operation.But conventional air source heat pump drying technology has the following disadvantages at present：It is empty when summer, outside air temperature was excessive
The condensing pressure of air supply heat pump is excessive, 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 short, when outdoor temperature is too high or too low, regular air source
Prominent technical problem, has seriously affected popularization and application of the air source heat pump in drying field existing for heat pump.
Current heat pump drying technology mainly uses heat cycles air, and the water of material is absorbed by way of heat convection
Point, achieve the purpose that material drying, opposing heat transfer mode（Heat transfer, heat convection, radiation heat transfer）For, using single pair
Stream heat exchange heat pump drying mode, the Drying Rates of material drying are relatively slow and dehumidifying energy consumption is than relatively low, the product after drying materials
Matter is relatively poor.In addition, when being dried to dangerous material, peculiar smell material, moisture content high material and heat sensitive material, open circuit
The circulation drying medium mode of formula cannot meet stoving process requirement.
Utility model content
The purpose of this utility model is precisely in order to provide the closed type heat pump drying system with interior radiant heat transfer, to solve
In existing stoving process environment it is seriously polluted, dehumidifying energy consumption than it is relatively low, operating cost is high, Drying Rates are slow, alternating temperature adjusting more
Difficulty etc. protrudes technical problem.
In order to solve the above technical problems, the utility model uses following technical scheme：
A kind of closed type heat pump drying system with interior radiant heat transfer of the utility model offer, including three pressure winds are cold and hot
Pump subsystem and closed type drying medium circulation subsystem, the three pressure air-cooled heat pump subsystems include main road compressor,
Main road oil eliminator, main road condenser, recooler, device for drying and filtering, peephole, the first expansion valve, in calm the anger liquid/gas separator,
Two expansion valves, evaporator, low-pressure gas-liquid separator, evaporating pressure regulating valve, bypass compressor, bypass oil eliminator, the first list
To valve, the second check valve, bypass condenser and connecting pipe；The closed type drying medium circulation subsystem includes auxiliary
Between PTC electric heater, circulating fan, material drying, material, temperature sensor, humidity sensor, moist chamber, condensation water discharge
Mouth, medium heating chamber and connection air passage；The exhaust outlet of the main road compressor is connected with main road oil eliminator, main road oil separates
Device is connected by the first check valve with the import of main road condenser；The outlet of main road condenser respectively with the main road of recooler into
Mouth is connected with the outlet of bypass condenser；The recooler main road outlet calm the anger with liquid/gas separator import be connected,
Therebetween device for drying and filtering, peephole and the first expansion valve are equipped with connecting pipe successively；Medium pressure gas-liquid separator
Two outlets be connected respectively with the bypass import of recooler and the import of the second expansion valve, the outlet and steaming of the second expansion valve
Hair device is connected, and evaporator is connected with low-pressure gas-liquid separator again, and low-pressure gas-liquid separator is connected with the air entry of main road compressor
Connect, the bypass outlet of the recooler is connected by the air entry after evaporating pressure regulating valve with bypass compressor；It is described auxiliary
The exhaust outlet of road compressor is connected with bypass oil eliminator, bypass oil eliminator by after the second check valve with bypass condenser
Import is connected；Main road condenser, auxiliary PTC electric heater are successively installed in the medium heating chamber, medium heating chamber
Air outlet is connected by connecting air passage with the air inlet of circulating fan；Inlet air between the air outlet and material drying of circulating fan
Mouth is connected；Bypass condenser is installed in the material drying, the air outlet of bypass condenser is by connecting air passage with removing
The air inlet of moist chamber is connected, temperature sensor and humidity sensor is equipped with connection air passage therebetween；The moist chamber
Interior to be equipped with evaporator and condensate outlet, the air outlet of moist chamber is connected by connecting air passage with the air inlet of medium heating chamber
Connect；The material drying is uniformly laid on the surface of bypass condenser.
Main road compressor and bypass compressor described in the utility model are to determine frequency scroll compressor, determine frequency rolling-rotor
Any one form in formula compressor, inverter scroll compressor, frequency conversion rolling rotor compressor.The main road condensation
Device, evaporator are fin-tube heat exchanger, any one structure type in stacked heat exchanger, parallel flow heat exchanger.Institute
The first expansion valve and the second expansion valve stated for hand expansion valve, choke type expansion valve, float-ball type expansion valve, heating power expansion valve,
Any one throttle mechanism form in electric expansion valve.The bypass condenser is multilayer shelf-type heat exchanger, multilayer is arranged
Any one structure type in pipe heat exchanger, multilayer aluminum composite plate inflation type heat exchanger.The circulating fan is frequency conversion
Wind turbine, determine any one form in frequency wind turbine, gear shift wind turbine.The evaporating pressure regulating valve is one kind by upstream pressure
（That is evaporating pressure）The ratio adjusting valve of control, proportional integration regulating valve, proportion differential regulating valve, proportional integral differential regulating valve
In any one adjuster form.The recooler is any one in plate heat exchanger, double-tube heat exchanger, flash evaporation
Structure type.
The beneficial effects of the utility model are as follows：
A kind of closed type heat pump drying system with interior radiant heat transfer provided by the utility model, its is novel, machine
Group design optimization is ingenious, by matching bypass regulating system on the basis of conventional heat pump drying system（Mainly compressed by bypass
Machine, bypass oil eliminator, bypass condenser, recooler and evaporating pressure regulating valve etc. form）, which has following main excellent
Point：
（1）By the auxiliary adjustment of bypass regulating system, which can solve summer high temperature refrigeration
It is prominent that condensing pressure is excessive under operating mode, compressor pressure ratios are excessive, the frequent protectiveness of excessive discharge temperature, compressor is shut down
Go wrong, and can solve under winter low temperature heating operating mode that evaporating temperature is too low, evaporator surface frosting is serious, compressor pressure
Contract the outstanding problem drastically declined than excessive, excessive discharge temperature, heating capacity and Energy Efficiency Ratio, improves air-cooled heat pump drying system
System annual 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, the heating capacity of the air-cooled heat pump drying system can be dried with material
Do the requirement of technique and change rapidly, while can also realize the drying materials mode that heat convection and radiant heat transfer are combined,
The Drying Rates and dehumidifying energy consumption ratio of material drying are significantly improved, ensure that layer color, quality and the fragrance of material drying.
（3）Medium mode is dried by the circulation of closed type, the air-cooled heat pump drying system realize to dangerous material,
The high efficiency drying of peculiar smell material, moisture content high material and heat sensitive material.
（4）A kind of closed type heat pump drying system with interior radiant heat transfer provided by the utility model, solves existing
The defects of heat pump drying technology, have the characteristics that high, energy saving, material drying the quality of drying efficiency is good and hygienic, and therefore, it has
There are extensive market application foreground and huge market potential, promoted and applied suitable for a wide range of.
Brief description of the drawings
Fig. 1 is the structure principle chart of the utility model.
Fig. 2 is single stage compress drying work model process figure.
Fig. 3 is three pressure drying work model process figures.
Fig. 4 is bypass+PTC drying work model process figures.
Sequence number in figure：1 is main road compressor, and 2 be main road oil eliminator, and 3 be main road condenser, and 4 be recooler, and 5 be dry
Dry filter, 6 be peephole, and 7 be the first expansion valve, 8 be in calm the anger liquid/gas separator, 9 be the second expansion valve, and 10 be evaporator,
11 be low-pressure gas-liquid separator, and 12 be evaporating pressure regulating valve, and 13 be bypass compressor, and 14 be bypass oil eliminator, and 15 be
One check valve, 16 be the second check valve, and 17 be bypass condenser, and 18 be auxiliary PTC electric heater, and 19 be circulating fan, and 20 are
Between material drying, 21 be material, and 22 be temperature sensor, and 23 be humidity sensor, and 24 be moist chamber, and 25 be condensation water discharge
Mouthful, 26 be medium heating chamber.
Embodiment
The utility model once will in conjunction with the embodiments（Attached drawing）It is described further, but is not intended to limit the utility model.
Embodiment 1
As shown in Figure 1, the utility model provides a kind of closed type heat pump drying system with interior radiant heat transfer, its feature
It is that the system is mainly made of three pressure air-cooled heat pump subsystems and closed type drying medium circulation subsystem.It is wherein described
Three pressure air-cooled heat pump subsystems are by main road compressor 1, main road oil eliminator 2, main road condenser 3, recooler 4, dry filter
Device 5, peephole 6, the first expansion valve 7, in calm the anger liquid/gas separator 8, the second expansion valve 9, evaporator 10, low-pressure gas-liquid separator
11st, evaporating pressure regulating valve 12, bypass compressor 13, bypass oil eliminator 14, the first check valve 15, the second check valve 16, auxiliary
Road condenser 17 and connecting pipe composition.Its specific connection relation：The exhaust outlet of the main road compressor 1 passes sequentially through main road
Oil eliminator 2, the first check valve 15 are connected with the import of main road condenser 3；The outlet of the main road condenser 3 respectively with again
The main road import of cooler 4 is connected with the outlet of bypass condenser 17；The main road outlet of the recooler 4 passes sequentially through dried
Calm the anger with the import of liquid/gas separator 8 of filter 5, peephole 6, the first expansion valve 7 is connected；Medium pressure gas-liquid separator 8
The bypass import with recooler 4, the import of the second expansion valve 9 are connected respectively for two outlets；The outlet of second expansion valve 9
Pass sequentially through evaporator 10, low-pressure gas-liquid separator 11 is connected with the air entry of main road compressor 1；The recooler 4 it is auxiliary
Way outlet is connected by evaporating pressure regulating valve 12 with the air entry of bypass compressor 13；The exhaust of the bypass compressor 13
Mouth passes sequentially through bypass oil eliminator 14, the second check valve 16 is connected with the import of bypass condenser 17.The closed type
Medium circulation subsystem is dried by 20, material 21, temperature sensing between auxiliary PTC electric heater 18, circulating fan 19, material drying
Device 22, humidity sensor 23, moist chamber 24, condensate outlet 25, medium heating chamber 26 and connection air passage composition.Its is specific
Connection relation is installed：Main road condenser 3, auxiliary PTC electric heater 18, its outlet air are successively installed in the medium heating chamber 26
Mouth is connected by air passage with the air inlet of circulating fan 19；Between the air outlet and material drying of the circulating fan 19 20 into
Air port is connected；Bypass condenser 17 is installed, its air outlet is by being provided with temperature sensor in 20 between the material drying
22nd, the air passage of humidity sensor 23 is connected with the air inlet of moist chamber 24；10 He of evaporator is installed in the moist chamber 24
Condensate outlet 25, its air outlet are connected by air passage with the air inlet of medium heating chamber 26；The material drying 21 is equal
It is even to be laid on the surface of bypass condenser 17.
To determine frequency scroll compressor, bypass compressor 13 rolls main road compressor 1 described in the utility model for fixed frequency
Rotor-type compressor.The main road condenser 3 is fin-tube heat exchanger, evaporator 10 is stacked heat exchanger.Described
First expansion valve 7 is hand expansion valve, and the second expansion valve 9 is hand expansion valve.The bypass condenser 17 is put for multilayer
Posture heat exchanger.The circulating fan 19 is frequency conversion fan.The evaporating pressure regulating valve 12 is one kind by upstream pressure
（That is evaporating pressure）The ratio adjusting valve of control.The recooler 4 is plate heat exchanger.
Embodiment 2
For main road compressor 1 described in the utility model to determine frequency rolling rotor compressor, bypass compressor 13 is frequency conversion
Rolling rotor compressor.The main road condenser 3 is parallel flow heat exchanger, evaporator 10 is stacked heat exchanger.Institute
The first expansion valve 7 stated is hand expansion valve, and the second expansion valve 9 is choke type expansion valve.The bypass condenser 17 is more
Layer aluminum composite plate inflation type heat exchanger.The circulating fan 19 is frequency conversion fan.The evaporating pressure regulating valve 12 is one
Kind is by upstream pressure（That is evaporating pressure）The proportional integration regulating valve of control.The recooler 4 is flash evaporation.Other structures with
Embodiment 1 is identical.
Embodiment 3
Main road compressor 1 described in the utility model is inverter scroll compressor, and bypass compressor 13 rolls for fixed frequency
Rotor-type compressor.The main road condenser 3 is stacked heat exchanger, evaporator 10 is fin-tube heat exchanger.Described
First expansion valve 7 is electric expansion valve, and the second expansion valve 9 is heating power expansion valve.The bypass condenser 17 is multilayer comb
Formula heat exchanger.The circulating fan 19 is frequency conversion fan.The evaporating pressure regulating valve 12 is one kind by upstream pressure（I.e.
Evaporating pressure）The proportion differential regulating valve of control.The recooler 4 is plate heat exchanger.Other structures and 1 structure of embodiment
It is identical.
Embodiment 4
Main road compressor 1 described in the utility model is inverter scroll compressor, and bypass compressor 13 rolls for fixed frequency
Rotor-type compressor.The main road condenser 3 is stacked heat exchanger, evaporator 10 is fin-tube heat exchanger.Described
First expansion valve 7 is float-ball type expansion valve, and the second expansion valve 9 is hand electric expansion valve.The bypass condenser 17 is multilayer
Calandria heat exchanger.The circulating fan 19 is frequency conversion fan；The evaporating pressure regulating valve 12 is pressed for one kind before by valve
Power（That is evaporating pressure）The proportional integral differential regulating valve of control.The recooler 4 is double-tube heat exchanger.Other structures and reality
It is identical to apply 1 structure of example.
Embodiment 5
Main road compressor 1 described in the utility model is frequency conversion rolling rotor compressor and bypass compressor 13 is fixed frequency
Scroll compressor.The main road condenser 3 is stacked heat exchanger, evaporator 10 is fin-tube heat exchanger.Described
First expansion valve 7 is electric expansion valve and the second expansion valve 9 is float-ball type expansion valve.The bypass condenser 17 is arranged for multilayer
Pipe heat exchanger.The circulating fan 19 is to determine frequency wind turbine.The evaporating pressure regulating valve 12 is one kind by upstream pressure
（That is evaporating pressure）The proportion differential regulating valve of control.The recooler 4 is plate heat exchanger.Other structures and embodiment 1
Structure is identical.
The principle of the utility model is：Medium circulation subsystem is dried by three pressure air-cooled heat pump subsystems and closed type
Optimized Matching combination, programmable controller PLC intelligently adjusts, and the utility model can realize three kinds of operating modes：
（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
When, this operating mode can be used.Main road compressor 1, circulating fan 19 start at this time, bypass compressor 13, auxiliary PTC electrical heating
Device 18 is closed.The workflow of three pressure air-cooled heat pump subsystems：Main road compressor 1 discharge high temperature and high pressure gaseous refrigerant according to
Secondary to enter main road condenser 3 by main road oil eliminator 2, the first check valve 15, release heat is introduced through circulating fan 19
Circulation drying medium, be condensed into supercooling or saturated liquid refrigerant, then pass sequentially through recooler 4, device for drying and filtering 5, see
Examine mirror 6 and enter the first expansion valve 7, be changed into the gas-liquid two-phase cold-producing medium of medium temperature and medium pressure after the flow restriction control of the first expansion valve 7,
Liquid/gas separator 8 of calming the anger in carry out gas-liquid separation, then in calm the anger 8 lower part of liquid/gas separator liquid refrigerant again pass through second
It is changed into the gas-liquid two-phase cold-producing medium of low-temp low-pressure after the flow restriction control of expansion valve 9, is absorbed into evaporator 10 through circulating fan 19
The heat of the circulation drying medium of introducing, evaporation is changed into the superheated refrigerant steam of low pressure, then through low-pressure gas-liquid separator 11
Enter the air entry of main road compressor 1 after progress gas-liquid separation, after the compression of main road compressor 1, discharge high temperature and pressure gas
State refrigerant, initially enters subsequent cycle.Dry the workflow of medium circulation subsystem：Come from the height of medium heating chamber 26
Warm low humidity drying medium, into heat cooling is discharged 20 between material drying, after heated material 21, absorbs at the same time through circulating fan 19
The moisture of material, is changed into the drying medium of low temperature and high relative humidity, then by the temperature sensor 22 in air passage, humidity sensor 23
After detection, into moist chamber 24, release heat enters the gas-liquid two-phase cold-producing medium of evaporator 10, and the water dried in medium steams
Gas becomes condensation water precipitation, and is excluded by condensate outlet 25, and then low temperature and low humidity drying medium adds through air passage into medium
Hot cell 26, be absorbed into main road condenser 3 gaseous refrigerant release latent heat of phase change after heat up, be changed into the drying of high temperature low humidity
Medium, starts subsequent cycle.
（2）Three pressure drying work patterns
Fig. 3 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
When between ~ -6 DEG C, this operating mode can be used.Main road compressor 1, bypass compressor 13, circulating fan 19 start at this time, auxiliary
PTC electric heater 18 is closed.The workflow of three pressure air-cooled heat pump subsystems：The high temperature and pressure gas that main road compressor 1 is discharged
State refrigerant passes sequentially through main road oil eliminator 2, the first check valve 15 enters main road condenser 3, and release heat is through return air
The circulation drying medium that wind turbine 18 introduces, is condensed into supercooling or saturated liquid refrigerant, then with coming from bypass condenser 17
Supercooling or saturated liquid refrigerant mixing, into recooler 4 main road side discharge heat through in 4 bypass side of recooler
The saturation gaseous refrigerant of medium temperature is pressed, further supercooling is changed into the larger liquid refrigerant of degree of supercooling, then passes sequentially through dried
Filter 5, peephole 6 enter the first expansion valve 7, are changed into the gas-liquid two of medium temperature and medium pressure after the flow restriction control of the first expansion valve 7
Phase refrigerant, liquid/gas separator 8 of calming the anger in are divided into two-way after carrying out gas-liquid separation, wherein the middle pressure medium temperature to isolate all the way
Saturated liquid refrigerant, calm the anger in 8 lower part of liquid/gas separator discharge, then again after the flow restriction control of the second expansion valve 9
It is changed into the gas-liquid two-phase cold-producing medium of low-temp low-pressure, the circulation introduced through circulating fan 19 is absorbed into evaporator 10 and dries medium
Heat, evaporation are changed into the superheated refrigerant steam of low pressure, then carry out that gas-liquid separation is laggard to be become owner of through low-pressure gas-liquid separator 11
The air entry of road compressor 1, after the compression of main road compressor 1, discharges high temperature and high pressure gaseous refrigerant, initially enters next
Circulation.Another way is the saturation gaseous refrigerant for the middle pressure medium temperature isolated, and 8 top of liquid/gas separator discharge of calming the anger in, enters
The bypass side of recooler 4 absorbs supercooling or saturated liquid refrigerant heat through 4 main road side of recooler, is changed into overheating gaseous refrigerant
Agent, then pressure regulation is throttled into the air entry of bypass compressor 13 by evaporating pressure regulating valve 12, pressed by bypass compressor 13
Indent out high temperature and high pressure gaseous refrigerant, then pass sequentially through bypass oil eliminator 14, the second check valve 16 enters bypass and condenses
Device 17, discharges between heat material drying 20 material 21, supercooling or saturated liquid refrigerant is condensed into, then with coming from
The supercooling of main road condenser 3 or the mixing of saturated liquid refrigerant, initially enter subsequent cycle.Dry the work of medium circulation subsystem
It is identical with single stage compress drying work pattern to make flow.
（3）Bypass+PTC drying work patterns
Fig. 4 is bypass+PTC drying work model process figures, and the middle and later periods is run in drying materials, temperature sensor 22, wet
When the drying humidity of media that degree sensor 23 detects is smaller, this operating mode can be used.Bypass compressor 13, auxiliary PTC at this time
Electric heater 18, circulating fan 19 start, and main road compressor 1 is closed.The workflow of three pressure air-cooled heat pump subsystems：Bypass
It is cold into bypass that the high temperature and high pressure gaseous refrigerant that compressor 13 is discharged passes sequentially through bypass oil eliminator 14, the second check valve 16
Condenser 17, discharges between heat material drying 20 material 21, supercooling or saturated liquid refrigerant is condensed into, into recooler
The saturation gaseous refrigerant of 4 main road side release middle pressure medium temperature of the heat through 4 bypass side of recooler, further supercooling are changed into
The larger liquid refrigerant of degree of supercooling, then device for drying and filtering 5, peephole 6 are passed sequentially through into the first expansion valve 7, by first
It is changed into the gas-liquid two-phase cold-producing medium of medium temperature and medium pressure after the flow restriction control of expansion valve 7, liquid/gas separator 8 of calming the anger in carries out gas-liquid point
From, the saturation gaseous refrigerant for the middle pressure medium temperature isolated, 8 top of liquid/gas separator discharge of calming the anger in, into the auxiliary of recooler 4
Trackside absorbs supercooling or saturated liquid refrigerant heat through 4 main road side of recooler, is changed into overheating gaseous refrigerant, then by steaming
Send out pressure-regulating valve 12 and throttle pressure regulation into the air entry of bypass compressor 13, it is high finally to compress discharge by bypass compressor 13
Warm high-pressure gaseous refrigerant, initially enters subsequent cycle.Dry the workflow of medium circulation subsystem：Come from medium heating
The high temperature low humidity drying medium of room 26 is through circulating fan 19 into 20 between material drying, and release heat cools down after heated material 21,
A small amount of moisture of material is absorbed at the same time, is changed into low temperature, the drying medium of higher levels of humidity, then by the temperature sensing in air passage
After device 22, humidity sensor 23 detect, then by the entrance medium of moist chamber 24 heating chamber 26, absorb auxiliary PTC electric heater 18
Heat up after the heat of release, be changed into the drying medium of high temperature low humidity, start subsequent cycle.
Claims (9)
1. the closed type heat pump drying system with interior radiant heat transfer, it is characterised in that：Including three pressure air-cooled heat pump subsystems
Medium circulation subsystem is dried with closed type, the three pressure air-cooled heat pump subsystems include main road compressor（1）, main road oil
Separator（2）, main road condenser（3）, recooler（4）, in calm the anger liquid/gas separator（8）, the second expansion valve（9）, evaporator（10）、
Low-pressure gas-liquid separator（11）, bypass compressor（13）, bypass oil eliminator（14）, the first check valve（15）, bypass condenser
（17）And connecting pipe；The closed type drying medium circulation subsystem includes auxiliary PTC electric heater（18）, material drying
Between（20）, material（21）, moist chamber（24）With medium heating chamber（26）；The main road compressor（1）Exhaust outlet and main road oil
Separator（2）It is connected, main road oil eliminator（2）Pass through the first check valve（15）With main road condenser（3）Import be connected；It is main
Road condenser（3）Outlet respectively with recooler（4）Main road import and bypass condenser（17）Outlet be connected；It is described again
Cooler（4）Main road outlet calm the anger liquid/gas separator with（8）Import be connected；Medium pressure gas-liquid separator（8）Two
Outlet respectively with recooler（4）Bypass import and the second expansion valve（9）Import be connected, the second expansion valve（9）Outlet
With evaporator（10）It is connected, evaporator（10）Again with low-pressure gas-liquid separator（11）It is connected, low-pressure gas-liquid separator（11）With master
Road compressor（1）Air entry be connected, the recooler（4）Bypass outlet with bypass compressor（13）Air entry be connected
Connect；The bypass compressor（13）Exhaust outlet and bypass oil eliminator（14）It is connected, bypass oil eliminator（14）It is cold with bypass
Condenser（17）Import be connected；The medium heating chamber（26）Interior priority is provided with main road condenser（3）, auxiliary PTC electricity plus
Hot device（18）, medium heating chamber（26）Air outlet and material drying between（20）Air inlet be connected；Between the material drying
（20）Bypass condenser is inside installed（17）, bypass condenser（17）Air outlet by connecting air passage and moist chamber（24）Into
Air port is connected；The moist chamber（24）It is interior to be equipped with evaporator（10）, moist chamber（24）Air outlet by connect air passage be situated between
Matter heating chamber（26）Air inlet be connected；The material drying（21）Uniformly it is laid in bypass condenser（17）Surface on.
2. the closed type heat pump drying system according to claim 1 with interior radiant heat transfer, it is characterised in that：Described
Three pressure air-cooled heat pump subsystems further include device for drying and filtering（5）, peephole（6）, the first expansion valve（7）, evaporating pressure adjust
Valve（12）, the second check valve（16）, recooler（4）Calm the anger with liquid/gas separator（8）Between adapter road on be equipped with drying successively
Filter（5）, peephole（6）With the first expansion valve（7）, the recooler（4）Bypass outlet pass through evaporating pressure regulating valve
（12）Afterwards with bypass compressor（13）Air entry be connected, bypass oil eliminator（14）Pass through the second check valve（16）Afterwards with it is auxiliary
Road condenser（17）Import be connected.
3. the closed type heat pump drying system according to claim 1 with interior radiant heat transfer, it is characterised in that：It is described to close
Road formula drying medium circulation subsystem further includes circulating fan（19）, temperature sensor（22）, humidity sensor（23）, condensation water
Outlet（25）And connection air passage, medium heating chamber（26）Air outlet, between material drying（20）Between connection air passage
It is interior to be equipped with circulating fan（19）；Bypass condenser（17）With moist chamber（24）Between connection air passage in, equipped with temperature sensor
（22）And humidity sensor（23）, condensate outlet（25）Arranged on moist chamber（24）It is interior.
4. the closed type heat pump drying system according to claim 1 with interior radiant heat transfer, it is characterised in that：Described
Main road compressor（1）With bypass compressor（13）Respectively determine frequency scroll compressor, determine frequency rolling rotor compressor, frequency conversion
Any one form in scroll compressor, frequency conversion rolling rotor compressor；The main road condenser（3）For finned tube
Any one structure type in formula heat exchanger, stacked heat exchanger, parallel flow heat exchanger；Evaporator（10）For fin tube type
Any one structure type in heat exchanger, stacked heat exchanger, parallel flow heat exchanger.
5. the closed type heat pump drying system according to claim 2 with interior radiant heat transfer, it is characterised in that：Described
First expansion valve（7）With the second expansion valve（9）Respectively hand expansion valve, choke type expansion valve, float-ball type expansion valve, heating power are swollen
Any one throttle mechanism form in swollen valve, electric expansion valve.
6. the closed type heat pump drying system according to claim 1 with interior radiant heat transfer, it is characterised in that：Described
Bypass condenser（17）For in multilayer shelf-type heat exchanger, multilayer calandria heat exchanger, multilayer aluminum composite plate inflation type heat exchanger
Any one structure type.
7. the closed type heat pump drying system according to claim 3 with interior radiant heat transfer, it is characterised in that：Described
Circulating fan（19）For frequency conversion fan, determine any one form in frequency wind turbine, gear shift wind turbine.
8. the closed type heat pump drying system according to claim 2 with interior radiant heat transfer, it is characterised in that：Described
Evaporating pressure regulating valve（12）To be a kind of by the ratio adjusting valve of upstream pressure control, proportional integration regulating valve, proportion differential tune
Save any one in valve, proportional integral differential regulating valve.
9. the closed type heat pump drying system according to claim 1 with interior radiant heat transfer, it is characterised in that：Described
Recooler（4）For any one structure type in plate heat exchanger, double-tube heat exchanger, flash evaporation.
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| CN201720609968.3U CN207335297U (en) | 2017-05-27 | 2017-05-27 | Closed type heat pump drying system with interior radiant heat transfer |
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| CN201720609968.3U CN207335297U (en) | 2017-05-27 | 2017-05-27 | Closed type heat pump drying system with interior radiant heat transfer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989573A (en) * | 2017-05-27 | 2017-07-28 | 中原工学院 | A kind of closed type heat pump drying system with interior radiant heat transfer |
| CN113883845A (en) * | 2021-10-19 | 2022-01-04 | 江苏慧朗能源科技有限公司 | Double-condensing box type dryer hopper |
-
2017
- 2017-05-27 CN CN201720609968.3U patent/CN207335297U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989573A (en) * | 2017-05-27 | 2017-07-28 | 中原工学院 | A kind of closed type heat pump drying system with interior radiant heat transfer |
| CN113883845A (en) * | 2021-10-19 | 2022-01-04 | 江苏慧朗能源科技有限公司 | Double-condensing box type dryer hopper |
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