CN109405522A - A kind of heat pump thermal storage defrosting system for grain heat-drying - Google Patents

A kind of heat pump thermal storage defrosting system for grain heat-drying Download PDF

Info

Publication number
CN109405522A
CN109405522A CN201811177915.4A CN201811177915A CN109405522A CN 109405522 A CN109405522 A CN 109405522A CN 201811177915 A CN201811177915 A CN 201811177915A CN 109405522 A CN109405522 A CN 109405522A
Authority
CN
China
Prior art keywords
heat
heat pump
level
pump unit
drying
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.)
Pending
Application number
CN201811177915.4A
Other languages
Chinese (zh)
Inventor
王天舒
王玉军
刘军
李�柱
王颖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU TIANSHU ELECTRICAL APPLIANCE CO Ltd
Original Assignee
JIANGSU TIANSHU ELECTRICAL APPLIANCE CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JIANGSU TIANSHU ELECTRICAL APPLIANCE CO Ltd filed Critical JIANGSU TIANSHU ELECTRICAL APPLIANCE CO Ltd
Priority to CN201811177915.4A priority Critical patent/CN109405522A/en
Publication of CN109405522A publication Critical patent/CN109405522A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001Drying-air generating units, e.g. movable, independent of drying enclosure
    • F26B21/002Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23BPRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B9/00Preservation of edible seeds, e.g. cereals
    • A23B9/08Drying; Subsequent reconstitution
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H4/00Fluid heaters using heat pumps
    • F24H4/06Gas heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28GCLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00Cleaning by flushing or washing, e.g. with chemical solvents
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/06Grains, e.g. cereals, wheat, rice, corn
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/85Food storage or conservation, e.g. cooling or drying

Abstract

The present invention relates to a kind of heat pump assembly for grain heat-drying, the heat pump unit including at least two-stage paired running, heat collector and heat storage water tank, heat collector are located in heat storage water tank, and the water outlet of heat storage water tank passes through the pipeline connection of pipeline and evaporator;Heat pump unit includes compressor, condenser and triple valve, the entrance of the compressor is for connecting gas-liquid separator, the import of the outlet connection triple valve of the compressor, the first outlet of the triple valve connect condenser, and the second outlet of the triple valve connects heat collector;The outlet of the condenser connects evaporator by the first solenoid valve, and the entrance of heat collector is connected by second solenoid valve, and the outlet of the heat collector connects evaporator;The present invention is in defrosting, the temperature of the drying of condensator outlet hot wind is always held at stable state, has preferable drying effect, and leaving air temp reduces when solving existing heat pump hot-blast stove due to defrosting, lead to grain heat-drying non-uniform temperature, the problem of drying effect difference.

Description

A kind of heat pump thermal storage defrosting system for grain heat-drying
Technical field
The present invention relates to a kind of heat pump thermal storage defrosting systems for grain heat-drying.
Background technique
In recent years, China's grain heat-drying machinery equipment Industry obtains quickly development, but is in market ratio on the whole More chaotic, product technology falls behind, and Enterprise Innovation Capability is poor, research and development ability is weaker, and disposable acquisition cost is higher to wait the stages, needs From policies and regulations, the market level, technological layer etc., dryer industry is pushed to continue health and orderly development.Existing grain dries Dry technology has natural air drying, dries, the drying of combustion chemistry fuel, electric heating, infrared, microwave drying etc., these technology energy consumptions are huge Greatly, seriously polluted, low efficiency, safe differential, it is clear that these old-fashioned drying equipments do not meet the sustainable development of today's society Trend.A kind of alternative old-fashioned drying equipment is found, and safe and environment-friendly, energy-efficient drying equipment seems more urgent.
With the aggravation that Chinese energy consumes, per capita energy's utilization rate has been unable to meet demand, and national government is to energy benefit Macro adjustments and controls, heat-pump apparatus advantage in energy-saving and emission-reduction are increasingly obvious.With fuel oil, gas fired-boiler is compared, average of the whole year Can energy saving about 70%, in addition the rise of electricity price dropped with fuel price, the low advantage of operating cost becomes increasingly conspicuous;Heat pump For product without any fire emission, it is preferable environmentally friendly machine to ozone layer no pollution that refrigerant, which selects environmental protection refrigerant,; Equipment Automatic Control, keeps watch without personnel, saves human cost.But heat pump hot-blast stove currently on the market is in rigid In the popularization stage, there are many more technologies to need to innovate and break through.
There are still problems for heat pump hot-blast stove currently used in the market: when system winter operation, outdoor environment temperature is low, steams Sending out temperature reduces, and evaporator surface easily ties thick frost layer, so as to cause unit performance decline, or even cannot normally exchange heat, Unit, which breaks down, shuts down, and traditional defrost mode need to be shut down or reverse defrost, and leaving air temp is caused to reduce, and outlet air is unstable, from And leading to grain heat-drying non-uniform temperature, some periods, drying effect is poor.
Summary of the invention
The object of the present invention is to provide a kind of heat pump assemblies for grain heat-drying, and heat pump assembly of the invention is in evaporator Thermal storage defrosting can be carried out when frosting, while defrosting, the temperature of the drying hot wind of condensator outlet is always held at stabilization State, have preferable drying effect, to solve the existing heat pump assembly for grain heat-drying due to defrosting when, condense The temperature of the drying hot wind of device outlet reduces, and leads to grain heat-drying non-uniform temperature, the problem of drying effect difference.
To achieve the above object, the scheme of the invention is: a kind of heat pump assembly for grain heat-drying, the heat pump assembly Heat pump unit including at least two-stage paired running, respectively level-one heat pump unit and second level heat pump unit, the level-one heat pump Unit and second level heat pump unit include evaporator, gas-liquid separator, compressor, condenser and triple valve, the heat pump assembly It further include heat collector and heat storage water tank, the heat collector is located in heat storage water tank, and the water outlet of heat storage water tank by pipeline and steams Send out the pipeline connection of device;
The entrance of the compressor connects gas-liquid separator, and the import of the outlet connection triple valve of the compressor is described The first outlet of triple valve connects condenser, and the second outlet of the triple valve connects heat collector;
The outlet of the condenser connects evaporator by the first solenoid valve, and connects heat collector by second solenoid valve The outlet of entrance, the heat collector connects evaporator;
In the case that drying operation operates normally, accumulation of heat, the first electricity of level-one heat pump unit is subcooled in level-one heat pump unit Magnet valve is closed, and second solenoid valve is opened, out the liquid refrigerant inflow heat collector after level-one heat pump unit condenser, in heat collector Water in the heat and heat storage water tank of refrigerant carries out heat exchange;
At the end of drying operation, level-one heat pump unit and second level heat pump unit concentrate accumulation of heat, the first solenoid valve and second Solenoid valve is all closed, and the gaseous refrigerant of the high temperature and pressure after compressor is directly entered heat collector, will be freezed in heat collector Water in the heat and heat storage water tank of agent carries out heat exchange.
Further, the heat pump hot blast stove system is provided with the heat pump unit of three-level paired running, respectively level-one heat Pump assembly, second level heat pump unit and three-level heat pump unit.
Further, in normally drying operational process, when accumulation of heat is subcooled in level-one heat pump unit, second level heat pump unit and three Grade heat pump unit operates normally.
Further, when grain cools down and loads and unloads grain, level-one heat pump unit, second level heat pump unit and three-level heat pump unit collection Middle accumulation of heat, the heat in external environment is quickly transferred in heat storage water tank, in the off time heat accumulation of heat pump hot blast stove system.
Further, the sprinkler includes water jet and water circulating pump, and the water inlet of the water circulating pump passes through Pipeline is connected to heat storage water tank, and the water outlet of the water circulating pump is connect by pipeline with water jet.
Further, defrosting solenoid valve is provided between the water outlet and water jet of the water circulating pump.
Further, when evaporimeter frosting, the hot water in heat storage water tank is equably sprayed by evaporation by sprinkler On device, defrosting is carried out using hot water.
Further, when evaporator does not have frosting, the hot water in heat storage water tank is equably sprayed by sprinkler On evaporator, for increasing the heat absorption capacity of evaporator, to improve the leaving air temp of heat pump hot blast stove system.
It is that the present invention reaches the utility model has the advantages that heat extra in refrigerant is transferred in heat storage water tank by the present invention, improve Capacity usage ratio reduces power consumption.
The present invention is worked well when meeting defrosting by hot water defrosting, moreover it is possible to which leaving air temp when guaranteeing grain heat-drying is not It can reduce.
The present invention recycles the heat of storage into the heating operations of normal heat pump unit, reaches reduction system configuration Function.
The present invention can not only be reached defrosting and be improved the endothermic effect of evaporator using spray hot water defrosting, while may be used also To reach the dust on cleaning evaporator, guarantee the heat transfer effect of evaporator.
Detailed description of the invention
Fig. 1 is the structure principle chart of heat pump assembly of the present invention.
1-1:1 compressor, 2-1:1 condenser, 3-1:1 throttling set, 4-1:1 evaporator, 5-1:1 gas-liquid Separator, 6-1:1 triple valve, No. 7-1:1 first solenoid valve, 8-1:1 second solenoid valve, 10-1:1 water jet, 11-1: No. 1 defrosting solenoid valve;
1-2:2 compressor, 2-2:2 condenser, 3-2:2 throttling set, 4-2:2 evaporator, 5-2:2 gas-liquid Separator, 6-2:2 triple valve, No. 7-2:2 first solenoid valve, 8-2:2 second solenoid valve, 10-2:2 water jet, 11-2: No. 2 defrosting solenoid valves;
1-3:3 compressor, 2-3:3 condenser, 3-3:3 throttling set, 4-3:3 evaporator, 5-3:3 gas-liquid Separator, 6-3:3 triple valve, No. 7-3:3 first solenoid valve, 8-3:3 second solenoid valve, 10-3:3 water jet, 11-3: No. 3 defrosting solenoid valves;
12: heat collector, 13: heat storage water tank, 14 water circulating pumps 15: pressure fan.
Specific embodiment
The present invention is described in further detail with specific embodiment with reference to the accompanying drawing.
Heat pump assembly of the invention is used for the heat pump hot blast stove system of grain heat-drying, including heat pump unit, heat collector and storage Boiler after heat pump unit is heated fresh air, is sent to drying tower by pressure fan for grain heat-drying.Heat collector is set to storage In boiler, the water outlet of heat storage water tank passes through the pipeline connection of pipeline and evaporator, and heat pump unit carries out accumulation of heat to heat collector, Water in heat and heat storage water tank in heat collector carries out heat exchange, and the water after heating enters in evaporator pipeline, makes evaporator Temperature increases, and realizes the thermal storage defrosting to evaporator.
Such as Fig. 1, the heat pump unit of the present embodiment includes level-one heat pump unit, second level heat pump unit and three-level heat pump unit, The heat pump assembly of the present embodiment is for when drying operation, fresh air to pass through three-level heat pump unit, second level heat pump unit and level-one heat pump Unit is heated step by step, by the fresh air after heating step by step, is sent into drying tower by pressure fan and is used for grain heat-drying.
Wherein, level-one heat pump unit includes No. 1 compressor 1-1, No. 1 condenser 2-1, No. 1 throttling set 3-1, No. 1 evaporation Device 4-1, No. 1 gas-liquid separator 5-1 and No. 1 triple valve 6-1.
The outlet that the entrance of No. 1 compressor 1-1 connects No. 1 gas-liquid separator 2-1, No. 1 compressor 1-1 connects No. 1 threeway First outlet A connection No. 1 condenser 2-1, the second outlet B of No. 1 triple valve 6-1 of the import C, No. 1 triple valve 6-1 of valve 6-1 Connect heat collector 12.The outlet of No. 1 condenser 2-1 passes through No. 1 the by No. 1 first solenoid valve 7-1 No. 1 evaporator of connection The outlet of the entrance of two solenoid valve 8-1 connection heat collectors, heat collector connects No. 1 evaporator 4-1.
Second level heat pump unit includes No. 2 compressor 1-2, No. 2 condenser 2-2, No. 2 throttling set 3-2, No. 2 evaporator 4- 2, No. 2 gas-liquid separator 5-2 and No. 2 triple valve 6-2.
The outlet that the entrance of No. 2 compressor 1-2 connects No. 2 gas-liquid separators 2-2, No. 2 compressor 1-2 connects No. 2 threeways First outlet A connection No. 2 condensers 2-2, the second outlet B of No. 2 triple valve 6-2 of the import C, No. 2 triple valve 6-2 of valve 6-2 Connect heat collector 12.The outlet of No. 2 condenser 2-2 passes through No. 2 the by No. 2 first solenoid valve 7-2 No. 2 evaporators of connection The outlet of the entrance of two solenoid valve 8-2 connection heat collectors, heat collector connects No. 2 evaporator 4-2.
Three-level heat pump unit includes No. 3 compressor 1-3, No. 3 condenser 2-3, No. 3 throttling set 3-3, No. 3 evaporator 4- 3, No. 3 gas-liquid separator 5-3 and No. 3 triple valve 6-3.
The outlet that the entrance of No. 3 compressor 1-3 connects No. 3 gas-liquid separators 2-3, No. 3 compressor 1-3 connects No. 3 threeways First outlet A connection No. 3 condensers 2-3, the second outlet B of No. 3 triple valve 6-3 of the import C, No. 3 triple valve 6-3 of valve 6-3 Connect heat collector 12.The outlet of No. 3 condenser 2-3 passes through No. 3 the by No. 3 first solenoid valve 7-3 No. 3 evaporators of connection The outlet of the entrance of two solenoid valve 8-3 connection heat collectors, heat collector connects No. 3 evaporator 4-3.
Such as Fig. 1, the thermal storage defrosting equipment of the present embodiment further includes the sprinkler of defrosting, and the water in heat storage water tank reaches After set temperature, by carrying out further water spray to evaporator and defrosting on sprinkler spray to evaporator.By spraying skill The utilization of art can not only reach defrosting and improve the endothermic effect of evaporator, while may also reach up the ash on cleaning evaporator Dirt guarantees the heat transfer effect of evaporator.
Sprinkler includes water circulating pump 14 and No. 1 sprinkler, No. 2 sprinklers and No. 3 sprinklers, recirculated water The water inlet of pump 14 is connected to by pipeline with heat storage water tank 13, the water outlet of water circulating pump 14 pass through pipeline and No. 1 sprinkler, The connection of the spray pipeline of No. 2 sprinklers and No. 3 sprinklers, in which:
No. 1 sprinkler includes No. 1 water jet 10-1 and No. 1 defrosting solenoid valve 11-1, No. 1 defrosting solenoid valve 11-1 setting On pipeline between No. 1 water jet 10-1 and the water outlet of water circulating pump 14, when No. 1 evaporator 4-1 needs to defrost, No. 1 Defrosting, solenoid valve 11-1 is open-minded, and the hot water in heat storage water tank 13 is pumped into the spray pipeline of No. 1 water jet by water circulating pump 14, It is sprayed by No. 1 water jet and carries out defrosting on hot water to No. 1 evaporator.
No. 2 sprinklers include No. 2 water jet 10-2 and No. 2 defrosting solenoid valve 11-2, No. 2 defrosting solenoid valve 11-2 settings On pipeline between No. 2 water jet 10-2 and the water outlet of water circulating pump 14, when No. 2 evaporator 4-2 need to defrost, No. 2 Defrosting, solenoid valve 11-2 is open-minded, and the hot water in heat storage water tank 13 is pumped into the spray pipeline of No. 2 water jets by water circulating pump 14, It is sprayed by No. 2 water jets and carries out defrosting on hot water to No. 1 evaporator.
No. 3 sprinklers include No. 3 water jet 10-3 and No. 3 defrosting solenoid valve 11-3, No. 3 defrosting solenoid valve 11-3 settings On pipeline between No. 3 water jet 10-3 and the water outlet of water circulating pump 14, when No. 3 evaporator 4-3 need to defrost, No. 3 Defrosting, solenoid valve 11-3 is open-minded, and the hot water in heat storage water tank 13 is pumped into the spray pipeline of No. 3 water jets by water circulating pump 14, It is sprayed by No. 3 water jets and carries out defrosting on hot water to No. 3 evaporators.
The course of work:
The heat pump unit thermal cycle course of work: the gas of No. 1 compressor (No. 2 compressors, No. 3 compressors) sucking low-temp low-pressure State refrigerant by becoming the gaseous state of high temperature and pressure after compressed action, and enters No. 1 triple valve (No. 2 triple valves, No. 3 threeways Valve), wherein entering No. 1 condenser (No. 2 condensers, No. 3 condensers) all the way, another way is directly entered heat collector.
Becoming liquid by No. 1 condenser (No. 2 condensers, No. 3 condensers) or heat collector cooling, (heat distributed is turned Move on in the air of heating), the refrigerant of liquid enters No. 1 throttling set (No. 2 throttling sets, No. 3 throttling sets) and is saved Stream is depressured, and the refrigerant after reducing pressure by regulating flow is flowed into No. 1 evaporator (No. 2 evaporators, No. 3 evaporators), passes through No. 1 evaporator The heat that (No. 2 evaporators, No. 3 evaporators) absorb in air becomes gaseous refrigerant and is flowed into No. 1 gas-liquid separator (No. 2 gas Liquid/gas separator, No. 3 gas-liquid separators) in, then by No. 1 compressor (No. 2 compressors, No. 3 compressors) sucking, it is thusly-formed one Enclosed circulation system.
Accumulation of heat mode one: under drying operation operates normally, accumulation of heat is subcooled in level-one heat pump unit.Under this state, second level heat pump Unit and three-level heat pump unit operate normally, because of fresh air ability after second level heat pump unit and three-level heat pump unit two-step heating Level-one heat pump unit is reached, what level-one heat pump unit heated is the hot wind of higher temperature, and therefore, liquid refrigerant goes out No. 1 condensation There are also higher temperature after device, the power of compressor is higher.Under this state using supercooling heat transfer technology, by No. 1 condenser out Liquid refrigerant afterwards flows into heat collector again, carries out heat exchange with the water in heat storage water tank again, then flow throttling device again. No. 1 triple valve C-A conducting, 7-1 are closed under this state, and 8-1 is opened.Second level heat pump unit and three-level heat pump unit triple valve C-A Conducting, 7-2,7-3 are opened, and 8-2,8-3 are closed.When the temperature in heat storage water tank reaches when liquid refrigerant goes out No. 1 condenser When temperature, 7-1 is opened, and 8-1 is closed, and accumulation of heat mode one exits.
Accumulation of heat mode two: when grain cooling and handling grain, heat pump unit work carries out heat deposit.Under this accumulation of heat mode, Level-one heat pump unit, second level heat pump unit and three-level heat pump unit work at the same time, and concentrate accumulation of heat, No. 1 triple valve, No. 2 triple valves With the C-B conducting of No. 3 triple valves, 7-1,7-2,7-3 and 8-1,8-2,8-3 are closed, and the heat in external environment quickly turns It moves on in heat storage water tank, when the water temperature in heat storage water tank reaches 55 degree, level-one heat pump unit, second level heat pump unit and three-level heat The wholly off work of pump assembly, accumulation of heat terminate.
Defrost heat utilization mode: when No. 1 evaporator/No. 2 evaporator/No. 3 evaporator inlet air temperature be lower than 10 degree, fin Temperature is lower than 10 degree of evaporator inlet air temperature of No. 1 evaporator/No. 2 evaporator/No. 3, and when persistently reaching 5 minutes, and opening 1 is removed Defrost solenoid valve for white solenoid valve/No. 2 defrosting solenoid valve/No. 3, passes through No. 1 water circulating pump/No. 2 water circulating pump/No. 3 water circulating pump Hot water in heat storage water tank is pumped into the spray pipeline of No. 1 water jet/No. 2 water jet/No. 3 water jet, is sprayed water by No. 1 Hot water in heat storage water tank is equably sprayed onto the evaporation of No. 1 evaporator/No. 2 evaporator/No. 3 by device/No. 2 water jet/No. 3 water jet On device, defrosting is carried out using hot water.Since hot water defrosting process absorbs the heat of hot water, the heating capacity of heat pump unit instead can The phenomenon that rising, the leaving air temp decline dried when being not in defrosting.
Frost-free heat utilization mode: when heat pump unit is in operating status, and No. 1 evaporator/No. 2 evaporator/No. 3 are evaporated The inlet air temperature of device is higher than 10 degree, when the water temperature of heat storage water tank is higher than environment temperature, opens No. 1 defrosting solenoid valve/No. 2 defrosting electricity Defrost solenoid valve for magnet valve/No. 3, by No. 1 water circulating pump/No. 2 water circulating pump/No. 3 water circulating pump by the hot water in heat storage water tank It is pumped into the spray pipeline of No. 1 water jet/No. 2 water jet/No. 3 water jet, is sprayed water by No. 1 water jet/No. 2 water jet/No. 3 Hot water in heat storage water tank is equably sprayed on the evaporator of No. 1 evaporator/No. 2 evaporator/No. 3 by device, and No. 1 evaporator/No. 2 are steamed The heat absorption capacity for sending out device/No. 3 evaporator increases, and improves the leaving air temp of heat pump hot blast stove system.

Claims (8)

1. a kind of heat pump assembly for grain heat-drying, it is characterised in that: the heat pump assembly includes at least two-stage paired running Heat pump unit, respectively level-one heat pump unit and second level heat pump unit, the level-one heat pump unit and second level heat pump unit be equal Including evaporator, gas-liquid separator, compressor, condenser and triple valve, the heat pump assembly further includes heat collector and water storage Case, the heat collector are located in heat storage water tank, and the water outlet of heat storage water tank passes through the pipeline connection of pipeline and evaporator;
The entrance of the compressor connects gas-liquid separator, the import of the outlet connection triple valve of the compressor, the threeway The first outlet of valve connects condenser, and the second outlet of the triple valve connects heat collector;
The outlet of the condenser connects evaporator by the first solenoid valve, and connects entering for heat collector by second solenoid valve Mouthful, the outlet of the heat collector connects evaporator;
In the case that drying operation operates normally, accumulation of heat, the first solenoid valve of level-one heat pump unit is subcooled in level-one heat pump unit It closes, second solenoid valve is opened, and the liquid refrigerant after level-one heat pump unit condenser flows into heat collector out, is freezed in heat collector Water in the heat and heat storage water tank of agent carries out heat exchange;
At the end of drying operation, level-one heat pump unit and second level heat pump unit concentrate accumulation of heat, the first solenoid valve and the second electromagnetism Valve is all closed, and the gaseous refrigerant of the high temperature and pressure after compressor is directly entered heat collector, by refrigerant in heat collector Water in heat and heat storage water tank carries out heat exchange.
2. the heat pump assembly according to claim 1 for grain heat-drying, which is characterized in that the heat pump hot blast stove system It is provided with the heat pump unit of three-level paired running, respectively level-one heat pump unit, second level heat pump unit and three-level heat pump unit.
3. the heat pump assembly according to claim 2 for grain heat-drying, which is characterized in that in normally drying operational process In, when accumulation of heat is subcooled in level-one heat pump unit, second level heat pump unit and three-level heat pump unit are operated normally.
4. the heat pump assembly according to claim 2 for grain heat-drying, which is characterized in that grain cooling and handling grain When, level-one heat pump unit, second level heat pump unit and three-level heat pump unit concentrate accumulation of heat, and the heat in external environment is quickly transferred to In heat storage water tank, in the off time heat accumulation of heat pump hot blast stove system.
5. the heat pump assembly according to claim 1 for grain heat-drying, which is characterized in that the sprinkler includes The water inlet of water jet and water circulating pump, the water circulating pump is connected to by pipeline with heat storage water tank, and the water circulating pump goes out The mouth of a river is connect by pipeline with water jet.
6. the heat pump assembly according to claim 5 for grain heat-drying, which is characterized in that the water outlet of the water circulating pump Defrosting solenoid valve is provided between mouth and water jet.
7. the heat pump assembly according to claim 1 for grain heat-drying, which is characterized in that when evaporimeter frosting, lead to It crosses sprinkler to be equably sprayed onto the hot water in heat storage water tank on evaporator, carries out defrosting using hot water.
8. the heat pump assembly according to claim 1 for grain heat-drying, which is characterized in that when evaporator does not have frosting When, the hot water in heat storage water tank is equably sprayed on evaporator by sprinkler, for increasing the heat absorption capacity of evaporator, To improve the leaving air temp of heat pump hot blast stove system.
CN201811177915.4A 2018-10-10 2018-10-10 A kind of heat pump thermal storage defrosting system for grain heat-drying Pending CN109405522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811177915.4A CN109405522A (en) 2018-10-10 2018-10-10 A kind of heat pump thermal storage defrosting system for grain heat-drying

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811177915.4A CN109405522A (en) 2018-10-10 2018-10-10 A kind of heat pump thermal storage defrosting system for grain heat-drying

Publications (1)

Publication Number Publication Date
CN109405522A true CN109405522A (en) 2019-03-01

Family

ID=65467464

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811177915.4A Pending CN109405522A (en) 2018-10-10 2018-10-10 A kind of heat pump thermal storage defrosting system for grain heat-drying

Country Status (1)

Country Link
CN (1) CN109405522A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200972294Y (en) * 2006-11-17 2007-11-07 陈则韶 Wind heat pump with anti-frost heat exchange pipe
CN204006861U (en) * 2014-07-29 2014-12-10 江苏天舒电器有限公司 A kind of industrial cold and hot balancing machine group system
WO2017145762A1 (en) * 2016-02-23 2017-08-31 三菱電機株式会社 Heat pump device and air conditioner
CN105115186B (en) * 2015-09-15 2017-09-26 江苏天舒电器有限公司 A kind of cold and hot bascule of heat pump water-heating machine laboratory
WO2018026137A1 (en) * 2016-08-01 2018-02-08 윤명진 Heat exchanger alternating-type heat pump system
CN107764036A (en) * 2017-10-31 2018-03-06 江苏天舒电器股份有限公司 A kind of frostless, Multivariable Coupling type heat pump hot blast stove system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200972294Y (en) * 2006-11-17 2007-11-07 陈则韶 Wind heat pump with anti-frost heat exchange pipe
CN204006861U (en) * 2014-07-29 2014-12-10 江苏天舒电器有限公司 A kind of industrial cold and hot balancing machine group system
CN105115186B (en) * 2015-09-15 2017-09-26 江苏天舒电器有限公司 A kind of cold and hot bascule of heat pump water-heating machine laboratory
WO2017145762A1 (en) * 2016-02-23 2017-08-31 三菱電機株式会社 Heat pump device and air conditioner
WO2018026137A1 (en) * 2016-08-01 2018-02-08 윤명진 Heat exchanger alternating-type heat pump system
CN107764036A (en) * 2017-10-31 2018-03-06 江苏天舒电器股份有限公司 A kind of frostless, Multivariable Coupling type heat pump hot blast stove system

Similar Documents

Publication Publication Date Title
CN107764036B (en) A kind of frostless, Multivariable Coupling type heat pump hot blast stove system
CN201733563U (en) Air-conditioner system suitable for cabinets
CN204063414U (en) A kind of heat pump drives pre-cold mould solution humidifying Fresh air handling units
US20200263909A1 (en) Control system and control method for frostless, multivariable coupling, and heat pump-based hot blast stove
CN109405523A (en) A kind of grain heat-drying heat pump hot blast stove system
CN204574476U (en) A kind of hot water machine drying system
CN110319617A (en) Gas-fired heat pump device based on heat source tower
CN208000031U (en) A kind of heat pump hot-blast stove structure
CN107388657B (en) One kind compressing the regenerated Frostless air-source heat pump system of solution based on low pressure
CN102620489B (en) Air conditioner heat pump unit with antifreeze solution regenerated heat recovery device
CN201522044U (en) Dual-system air conditioning unit
CN104771918B (en) A kind of cold concentration systems based on wet evaporation
CN101936614B (en) Liquid-supplying and cold and hot water-circulating machine set of evaporative condensate pump
CN108120315A (en) Circulating water cooling system and method
CN204154012U (en) A kind of air conditioner and heat pump unit with anti-freezing solution regenerating unit
CN109405522A (en) A kind of heat pump thermal storage defrosting system for grain heat-drying
CN105423620A (en) Efficient large temperature rise two-stage throttling intercooling heat pump water heater
CN202675751U (en) Air-condition heat pump unit provided with anti-freezing solution regenerated heat recovery device
CN209027156U (en) A kind of grain heat-drying heat pump thermal storage defrosting system
CN2767925Y (en) Heating cycle system for air energy heat pump
CN201757537U (en) Liquid-feeding circulation cold/hot water unit of evaporative condensate pump
CN202813876U (en) Spray fluid drying type ultralow temperature wind energy heat pump air-conditioning apparatus
CN204522323U (en) Based on the cold concentration systems of wet evaporation
CN104406337B (en) A kind of cavitation-preventive liquid feed device and refrigeration system based on this device
CN201093734Y (en) Energy saving and defrosting air source water heater

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