CN104949495B - Intelligent high temperature heat pump drying system with damp-heat recovery - Google Patents
Intelligent high temperature heat pump drying system with damp-heat recovery Download PDFInfo
- Publication number
- CN104949495B CN104949495B CN201510383617.0A CN201510383617A CN104949495B CN 104949495 B CN104949495 B CN 104949495B CN 201510383617 A CN201510383617 A CN 201510383617A CN 104949495 B CN104949495 B CN 104949495B
- Authority
- CN
- China
- Prior art keywords
- air
- valve
- damp
- heat pump
- temperature
- Prior art date
Links
- 238000001035 drying Methods 0.000 title claims abstract description 58
- 239000000463 materials Substances 0.000 claims abstract description 27
- 239000003570 air Substances 0.000 claims description 78
- 230000001105 regulatory Effects 0.000 claims description 43
- 239000007788 liquids Substances 0.000 claims description 34
- 238000002347 injection Methods 0.000 claims description 25
- 239000007924 injections Substances 0.000 claims description 25
- 239000011521 glasses Substances 0.000 claims description 8
- 239000003921 oils Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 5
- 210000001736 Capillaries Anatomy 0.000 claims description 3
- 238000006243 chemical reactions Methods 0.000 claims description 3
- 230000005520 electrodynamics Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000001429 stepping Effects 0.000 claims description 3
- 230000000875 corresponding Effects 0.000 claims description 2
- 238000005516 engineering processes Methods 0.000 abstract description 19
- 238000004064 recycling Methods 0.000 abstract description 4
- 239000002918 waste heat Substances 0.000 abstract description 4
- 239000003205 fragrance Substances 0.000 abstract description 2
- 238000005485 electric heating Methods 0.000 abstract 1
- 238000003379 elimination reactions Methods 0.000 abstract 1
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000000034 methods Methods 0.000 description 14
- 239000003507 refrigerants Substances 0.000 description 8
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 241001081830 Degeneriaceae Species 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gases Substances 0.000 description 3
- 238000004781 supercooling Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000203 mixtures Substances 0.000 description 2
- 239000002699 waste materials Substances 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 1
- 238000010521 absorption reactions Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound 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[S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002912 waste gases Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- 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
Description
Technical field
The present invention relates to a kind of intelligent high temperature heat pump drying system with damp and hot recovery.
Background technology
In China, traditional drying technology mainly passes through the primary energy such as fuel oil, combustion gas, fire coal or burn wood and produces Heat carries out product drying, and not only energy consumption is big, efficiency is low, also can produce the nuisances such as substantial amounts of waste gas, waste water, waste residue, dust Matter, causes the disasters such as acid rain, haze, serious environment pollution.Meanwhile, using the drying technology of traditional energy, in the drying of material During it may appear that pernicious gas enters baking room, make to contain the harmful substance such as sulphur in material, form secondary pollution.Therefore, pass The stoving process of system needs to improve.
Current new drying technology mainly has two kinds, and one kind is to directly heat technology using electrothermal tube, simple to operate, but Efficiency is too low, and operating cost is higher, contrary with national energy saving policy；Another kind is the energy-conserving and environment-protective using heat pump drying technology, Existing Some Enterprises begin to use, but existing heat pump drying technology has that systemic-function is excessively simple, and Intelligent adjustment is poor, Cause the temperature of baking room, moisture fluctuation is larger it is impossible to the epidemic disaster meeting stoving process adjusts requirement, leads to heat pump Overall efficiency is not high, and service life reduces.In addition, the hot blast being produced using heat pump drying technology is due to absorbing a large amount of of product Moisture and become moist through, system cannot recycling, be often exhausted directly to outside baking room, fill into simultaneously outdoor new Wind reheats, and causes the waste of the energy, increased the energy consumption of heat pump drying technology.
Content of the invention
The purpose of the present invention precisely in order to provide a kind of intelligent high temperature heat pump drying system with damp and hot recovery, with solution In existing stoving process, environment is seriously polluted, less efficient, operating cost is high, temperature and humidity regulation is poor, hydrofuge waste heat cannot profit With etc. technical problem.
The purpose of the present invention can be realized by following technique measures:
The intelligent high temperature heat pump drying system with damp and hot recovery of the present invention includes high temperature heat pump subsystem, damp and hot recovery Subsystem, Temperature and Humidity Control adjust subsystem, baking room subsystem；Wherein said high temperature heat pump subsystem include compressor, Throttling arrangement, air-cooled condenser, wind-cooled evaporator, oil eliminator, reservoir, device for drying and filtering, liquid-sighting glass, capacity adjusting valve, Liquid injection valve, subcooler, pressure of inspiration(Pi) regulating valve, septum valve, differential regulating valve and connecting pipe；The row of described compressor Gas port is divided into two interfaces, and one of exhaust port is connected with pressure of inspiration(Pi) regulating valve import by capacity adjusting valve, separately One exhaust port is connected with air-cooled condenser import and differential regulating valve import respectively by oil eliminator；Described air-cooled cold The outlet of condenser is connected with differential regulation valve outlet port and reservoir import respectively by septum valve, and reservoir outlet is successively It is connected with throttling arrangement import and liquid injection valve import respectively by device for drying and filtering, liquid-sighting glass and subcooler, wherein throttling dress Put outlet to be connected with pressure of inspiration(Pi) regulating valve import by wind-cooled evaporator；Hydrojet valve outlet port passes through subcooler and compressor Corresponding air inlet is connected, and described pressure of inspiration(Pi) is adjusted valve outlet port and is connected with compressor air suction mouth；Described damp and hot recovery subsystem System includes hydrofuge exhaust fan, fresh-air fan, fresh air screen pack, wet heat recovering heat exchanger and airduct；Wherein said hydrofuge Exhaust fan is connected with the import of wet heat recovering heat exchanger air draft side by airduct, the outlet of wet heat recovering heat exchanger air draft side It is connected with wind output channel, described fresh air screen pack is installed on the import of wet heat recovering heat exchanger fresh air side, damp and hot recovery is changed The outlet of hot device fresh air side is connected with the import of fresh-air fan by airduct；Described Temperature and Humidity Control adjusts subsystem and includes Capacity adjusting valve, air-cooled condenser blower fan, wind-cooled evaporator blower fan, hydrofuge exhaust fan, fresh-air fan, electric heater, control Device, temperature sensor, humidity sensor and connecting wire；Wherein said temperature sensor, humidity sensor are respectively arranged in In the storeroom of casing and at return air inlet, it is connected with the input of controller respectively by connecting wire, described controller Output end pass through connecting wire respectively with the motor of capacity adjusting valve, the motor of air-cooled condenser blower fan, wind-cooled evaporator wind The motor of machine, the motor of hydrofuge exhaust fan, the motor of fresh-air fan, electric heater are connected；Described baking room subsystem Including casing, door, return air dividing plate, materials vehicle, hydrofuge exhaust fan, fresh-air fan, air-cooled condenser and electric heater；Wherein Described door is arranged on the right-hand member of casing, and hydrofuge exhaust fan, fresh-air fan are respectively arranged in up and down the two of the left end of casing Side, described air-cooled condenser, electric heater are installed on the air inlet of storeroom front end successively, and described materials vehicle deposits in material Between air inlet, described return air dividing plate is installed on storeroom upper end, for component material between return airway.
Heretofore described compressor is that invariable frequency compressor, stepping compressor, frequency-changeable compressor or Gas-supplying enthalpy-increasing are compressed Any one in machine；Described air-cooled condenser, wind-cooled evaporator be fin-tube type, in stacked or parallel flow heat exchanger Any one；Described air-cooled condenser blower fan, wind-cooled evaporator blower fan, hydrofuge exhaust fan, fresh-air fan be frequency conversion fan, Determine any one in frequency blower fan or gear shift blower fan；Described throttling arrangement is heating power expansion valve, capillary expansion valve or electronics Any one in expansion valve；Described liquid injection valve is any one in pressure type liquid injection valve or temp. type liquid injection valve；Described Capacity adjusting valve be thermal type capacity adjusting valve, any one in electromagnetic energy regulating valve or electrodynamic type capacity adjusting valve Kind；Described pressure of inspiration(Pi) regulating valve is the proportionality regulating valve that one kind is controlled by downstream pressure (i.e. suction pressure of compressor)； Described septum valve is the proportionality regulating valve that one kind is controlled by upstream pressure (i.e. condensing pressure)；Described electric heater For any one in ptc electric heater, stainless steel heater, fluid explosion-proof electric heater or electric infrared heater；Described mistake Cooler is any one in plate type heat exchanger, double-tube heat exchanger or flash evaporation；Described wet heat recovering heat exchanger changes for plate-fin Any one in hot device or heat pipe-type recover.
Heretofore described hydrojet valve outlet port is connected with the middle pressure tonifying Qi chamber of compressor by subcooler.
Heretofore described hydrojet valve outlet port passes through subcooler, pressure of inspiration(Pi) regulating valve is connected with the air entry of compressor Connect.Adjust the aperture of liquid injection valve by being arranged on the temperature sensitive control device of compressor outlet, and then control the spray entering subcooler Liquid measure.
The principle of the present invention and having the beneficial effect that:
A kind of intelligent high temperature heat pump drying system of the damp and hot recovery of band that the present invention provides, its clever structure, system sets Meter Optimized Matching, by high temperature heat pump technology, air-conditioning regulation technology, heat recovery technology and the organic knot of auxiliary electrical heater technology Close, its drying temperature adjustable range, between 35 DEG C ~ 90 DEG C, has been widened the application of different material drying, improve high temperature Heat pump drying system reliability of operation, stability and economy.
A kind of intelligent high temperature heat pump drying system of the damp and hot recovery of band that the present invention provides, by controller plc and phase Close the Intelligent adjustment of executing agency, for the requirement of drying materials technique, using Temperature and Humidity Control strategy at times, temperature control Within precision is up to 0.2 DEG C, within humid control precision is up to 0.5%, realizes the Automatic Control of drying course, improve simultaneously The quality of material drying, quality and fragrance are it is ensured that the quality of material drying.
A kind of intelligent high temperature heat pump drying system of the damp and hot recovery of band that the present invention provides, by wet heat recovering heat exchanger The waste heat of hydrofuge is reclaimed, cost performance is high, energy-conserving and environment-protective solve the defect of existing high temperature drying technology, therefore, its There is extensive market application foreground and huge market potential it is adaptable to popularization and application on a large scale.
Brief description
Fig. 1 is the attachment structure figure of the first embodiment of the present invention.
Fig. 2 is the attachment structure figure of second embodiment of the present invention.
In figure sequence number: 1 compressor, 2 throttling arrangements, 3 air-cooled condensers, 3-1 air-cooled condenser blower fan, 4 wind-cooled evaporators, 4-1 wind-cooled evaporator blower fan, 5 oil eliminators, 6 reservoirs, 7 devices for drying and filtering, 8 liquid-sighting glass, 9-1 capacity adjusting valve, 9-2 controls Device (Programmable Logic Controller), 9-3 temperature sensor, 9-4 humidity sensor, 10 liquid injection valves, 11 subcoolers, 12 pressures of inspiration(Pi) are adjusted Valve, 13 septum valves, 14 differential regulating valves, 15 casings, 16 doors, 17 return air dividing plates, 18 materials vehicles, 19 hydrofuge thermal wind exhaustings Machine, 20 fresh-air fan, 21 fresh air screen packs, 22 electric heaters, 23 wet heat recovering heat exchangers.
Specific embodiment
The present invention is further described below with reference to embodiment (accompanying drawing):
Embodiment 1
As shown in figure 1, the present invention provides a kind of intelligent high temperature heat pump drying system with damp and hot recovery, this system includes High temperature heat pump subsystem, damp and hot recovery subsystem, Temperature and Humidity Control adjust subsystem, baking room subsystem.Wherein said height Warm heat pump subsystem include compressor 1, throttling arrangement 2, air-cooled condenser 3, wind-cooled evaporator 4, oil eliminator 5, reservoir 6, Device for drying and filtering 7, liquid-sighting glass 8, capacity adjusting valve 9-1, liquid injection valve 10, subcooler 11, pressure of inspiration(Pi) regulating valve 12, high voltage adjusting Valve 13, differential regulating valve 14 and connecting pipe；Its concrete annexation is that the exhaust outlet of compressor 1 is divided into two interfaces, its In an interface be connected with pressure of inspiration(Pi) regulating valve 12 import by capacity adjusting valve 9-1, another interface pass through oil separate Device 5 is connected with air-cooled condenser 3 import and differential regulating valve 14 import respectively, and air-cooled condenser 3 outlet is adjusted by high pressure Section valve 13 respectively with differential regulating valve 14 outlet and reservoir 6 import be connected, then reservoir 6 export pass sequentially through dried Filter 7, liquid-sighting glass 8 are connected with throttling arrangement 2 import and liquid injection valve 10 import respectively with subcooler 11, wherein throttling arrangement 2 Outlet is connected with pressure of inspiration(Pi) regulating valve 12 import by wind-cooled evaporator 4, and liquid injection valve 10 outlet is by subcooler 11 and suction Air pressure force regulating valve 12 import is connected, and described pressure of inspiration(Pi) regulating valve 12 outlet is connected with compressor air suction mouth；Described Damp and hot recovery subsystem include hydrofuge exhaust fan 19, fresh-air fan 20, fresh air screen pack 21, wet heat recovering heat exchanger 23 and Airduct；Wherein said hydrofuge exhaust fan 19 is connected with the import of wet heat recovering heat exchanger 23 air draft side by airduct, its The outlet of wet heat recovering heat exchanger 23 air draft side is connected with wind output channel, and described fresh air screen pack 21 is installed on damp and hot recovery The import of heat exchanger 23 fresh air side, the import of airduct and fresh-air fan 20 is passed through in the outlet of its wet heat recovering heat exchanger 23 fresh air side It is connected；Described Temperature and Humidity Control adjusts subsystem by capacity adjusting valve 9-1, air-cooled condenser blower fan 3-1, wind-cooled evaporator Blower fan 4-1, hydrofuge exhaust fan 19, fresh-air fan 20, electric heater 22, the preferred Programmable Logic Controller of controller 9-2(), temperature Sensor 9-3, humidity sensor 9-4 and connecting wire composition；Wherein said temperature sensor 9-3, humidity sensor 9-4 divide It is not installed in the storeroom of casing 15 and at return air inlet, be connected with the input of controller 9-2 respectively by connecting wire, The output end of described controller 9-2 passes through connecting wire motor, the air-cooled condenser blower fan 3- with capacity adjusting valve 9-1 respectively 1 motor, the motor of wind-cooled evaporator blower fan 4-1, the motor of hydrofuge exhaust fan 19, the motor of fresh-air fan 20, electrical heating Device 22 is connected；Described baking room subsystem is by casing 15, door 16, return air dividing plate 17, materials vehicle 18, hydrofuge exhaust fan 19th, fresh-air fan 20, air-cooled condenser 3 and electric heater 22 form；Wherein said door 16 is arranged on the right-hand member of casing 15, Hydrofuge exhaust fan 19, fresh-air fan 20 are respectively arranged in the both sides up and down of the left end of casing 15, described air-cooled condenser 3, Electric heater 22 is installed on the air inlet of storeroom front end successively, and described materials vehicle 18 deposits in storeroom air inlet, described Return air dividing plate 17 is installed on storeroom upper end, for component material between return airway.
Embodiment 2
As shown in Fig. 2 this embodiment its difference is compared with Example 1: described subcooler 11 no longer with air-breathing Pressure-regulating valve 12 import is connected, but is connected with pressure tonifying Qi chamber in compressor.
Compressor 1 of the present invention is invariable frequency compressor, stepping compressor, frequency-changeable compressor, Gas-supplying enthalpy-increasing compressor In any one form；Described air-cooled condenser 3, wind-cooled evaporator 4 are fin-tube type, stacked, parallel flow heat exchanger In any one version；Described air-cooled condenser blower fan 3-1, wind-cooled evaporator blower fan 4-1, hydrofuge exhaust fan 19th, fresh-air fan 20 be frequency conversion fan, determine frequency blower fan, any one form in gear shift blower fan；Described throttling arrangement 2 is heat Any one version in power expansion valve, capillary expansion valve or electric expansion valve；Described liquid injection valve 10 is pressure type Any one version in liquid injection valve, temp. type liquid injection valve；Described capacity adjusting valve 9-1 is thermal type energy adjustment Any one form in valve, electromagnetic energy regulating valve, electrodynamic type capacity adjusting valve；Described pressure of inspiration(Pi) regulating valve 12 is The proportionality regulating valve that one kind is controlled by downstream pressure (i.e. suction pressure of compressor)；Described septum valve 13 is subject to for one kind The proportionality regulating valve that upstream pressure (i.e. condensing pressure) controls；Described electric heater 22 is ptc electric heater, stainless steel adds Any one form in hot device, fluid explosion-proof electric heater, electric infrared heater；Described subcooler 11 be plate type heat exchanger, Any one version in double-tube heat exchanger, flash evaporation；Described air-cooled condenser 3, wind-cooled evaporator 4 be fin-tube type, Any one version in stacked, parallel flow heat exchanger；Described wet heat recovering heat exchanger 23 be plate-fin heat exchanger, Any one version in heat pipe-type recover.
By the Optimized Matching combination of aforementioned four subsystem, controller plc Intelligent adjustment, the workflow of the present invention is such as Under:
(1) basic energy level mode of operation
When drying materials technique just starts, and high-temperature heat pump drying system does not need energy, temperature and humidity regulation, can be adopted this Mode of operation.The flow process that Temperature and Humidity Control adjusts subsystem is: controller 9-2 is according to temperature sensor 9-3 and humidity sensor The information of 9-4 input, opens air-cooled condenser blower fan 3-1, wind-cooled evaporator blower fan 4-1, and is adjusted to maximum wind velocity, closes energy Regulating valve 9-1, hydrofuge exhaust fan 19, fresh-air fan 20 and electric heater 22.The flow process of high temperature heat pump subsystem is: pressure of inspiration(Pi) Force regulating valve 12 and septum valve 13 standard-sized sheet, liquid injection valve 10 and differential regulating valve 14 are closed, the HTHP that compressor is discharged The air-cooled condenser 3 that entered by oil eliminator 5 in casing 15 of refrigerant vapour discharge heat and become the supercooling of high pressure or full The liquid refrigerant of sum, then in turn through septum valve 13, reservoir 6, device for drying and filtering 7, liquid-sighting glass 8, subcooler 11 Enter throttling arrangement 2, the liquid refrigerant of supercooling is changed into the gas-liquid two-phase of low-temp low-pressure after the flow restriction control of throttling arrangement 2 Cold-producing medium, is entered the superheated refrigerant steam being changed into low pressure after wind-cooled evaporator 4 absorbs heat, is then adjusted by pressure of inspiration(Pi) Valve 12 enters compressor 1 and carries out next cyclic process.Baking room subsystem flow process is: the air in casing 15 is through air-cooled condensation After device 3 absorbs heat intensification, enter storeroom through electric heater 22, after the material on the air heated material car 18 of high temperature, Discharge heat cooling, absorb the moisture of material simultaneously, humidity increases, be then passed through the return airway of return air dividing plate 17 upside Enter air-cooled condenser 3 and enter subsequent cycle.
(2) adjust energy level mode of operation
A, air-breathing throttling energy adjustment
When summer, outdoor temperature was higher, compressor 1 pressure of inspiration(Pi) is too high, motor load can be caused excessive, now air-breathing Pressure-regulating valve 12 controls the pressure of inspiration(Pi) of compressor 1 according to downstream pressure (i.e. suction pressure of compressor), when pressure of inspiration(Pi) liter Gao Shi, pressure of inspiration(Pi) regulating valve 12 turns down, and makes the refrigerant superheat steam throttling that wind-cooled evaporator 4 exports, with relatively low air-breathing Pressure enters compressor.Other workflows are identical with basic energy level mode of operation.
B, Liquid injection cooling energy adjustment
When winter outdoor temperature is relatively low, and evaporating pressure and evaporating temperature are relatively low, or in drying materials technical process, condensation When pressure and condensation temperature are too high, or when causing the degree of superheat excessive during energy adjustment, compressor 1 delivery temperature may be caused Too high, liquid injection valve 10 can be adjusted the spouting liquid before entering pressure of inspiration(Pi) regulating valve 12, reduce according to the delivery temperature of compressor 1 The suction superheat of compressor, prevents compressor 1 excessive discharge temperature, meanwhile, in order to prevent the liquid refrigeration before throttling arrangement 2 Agent shwoot, through the gas-liquid two-phase cold-producing medium of liquid injection valve 10 throttling, first passes through subcooler 11, absorbs a part of liquid refrigerant Before entering back into pressure of inspiration(Pi) regulating valve 12 after heat, this ensure that the degree of supercooling of cold-producing medium before throttling arrangement 2, improve evaporimeter Refrigerating effect per unit swept volume and compressor efficiency.Other workflows are identical with basic energy level mode of operation.
C, hot-gas bypass energy adjustment
When, in drying materials technical process, when the temperature rise of storeroom is too fast, controller 9-2 is defeated according to temperature sensor 9-3 The information entering, opens capacity adjusting valve 9-1, and the refrigerant vapour part bypass of the HTHP that compressor 1 is discharged passes through energy Adjustable valve 9-1, enters compressor air suction mouth after reducing pressure by regulating flow, reduces the thermal discharge of air-cooled condenser 3 it is therefore prevented that compressor Run under 1 relatively low pressure of inspiration(Pi).Other workflows are identical with basic energy level mode of operation.
D, condenser reflux method energy adjustment
When winter outdoor temperature is very low, when high temperature heat pump system just starts, when condensing pressure is too low, before throttling arrangement 2 Pressure reduction is too little afterwards, and feed flow is short of power it is impossible to provide enough liquid supply rates to wind-cooled evaporator 4, by adjusting air-cooled condenser When blower fan 3-1, wind-cooled evaporator blower fan 4-1 still do not have effect, this control method can be adopted.After start, septum valve 13 is closed, Differential regulating valve 14 is opened, and compressor 1 is vented a part and is bypassed to reservoir 6, make pressure rise in reservoir 6.Work as condensation Pressure rise to septum valve 13 unlatching value above when, septum valve 13 is slightly opened, and with the rising of storeroom temperature, ties up When holding normal condensing pressure balance, the aperture of septum valve 13 increases to standard-sized sheet, and the aperture of differential regulating valve 14 diminishes to complete Close, heat pump refrigerant walks normal circulation path.Other workflows are identical with basic energy level mode of operation.
E, damp and hot recovery operation pattern
When, in drying materials technical process, when storeroom humidity is excessive, controller 9-2 inputs according to humidity sensor 9-4 Information, open hydrofuge exhaust fan 19, fresh-air fan 20, a part of hot and humid storeroom air draft is through hydrofuge thermal wind exhausting Machine 19 arranges outdoor, the fresh air of part outdoor low temperature and low humidity after entering wet heat recovering heat exchanger 23 air draft side release heat cooling After fresh air screen pack 21 enters after wet heat recovering heat exchanger 23 fresh air side absorption heat heats up, enter through fresh-air fan 20 Casing 15, reduces the humidity of storeroom.Other workflows are identical with basic energy level mode of operation.
F, auxiliary electrical heater energy adjustment
When, in drying materials technical process, the temperature rise rate of storeroom is excessively slow, the high temperature heat pump unit energy adjustment of itself When being not met by requiring, the information that controller 9-2 inputs according to temperature sensor 9-3, open electric heater 22, to through wind The air of cool condenser 3 carries out reheating, for meeting the requirement of the temperature rise rate of storeroom.Other workflows with basic Energy level mode of operation is identical.
Claims (10)
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| CN105258455B (en) * | 2015-11-03 | 2018-07-24 | 中国科学院理化技术研究所 | A kind of closed type hot pump drying system |
| CN105918770B (en) * | 2016-05-09 | 2019-12-13 | 顺德职业技术学院 | energy-saving control method for enhanced vapor injection heat pump vacuum freeze drying combined equipment with economizer |
| CN106643031A (en) * | 2017-01-01 | 2017-05-10 | 内蒙古科技大学 | Internal absorption type solar drier |
| CN108050774A (en) * | 2017-11-21 | 2018-05-18 | 郑州丽福爱生物技术有限公司 | One kind is three-dimensional efficiently to steam wool drying chamber |
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