CN109945603A - A kind of enclosed heat pump drying system - Google Patents

A kind of enclosed heat pump drying system Download PDF

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Publication number
CN109945603A
CN109945603A CN201910223289.6A CN201910223289A CN109945603A CN 109945603 A CN109945603 A CN 109945603A CN 201910223289 A CN201910223289 A CN 201910223289A CN 109945603 A CN109945603 A CN 109945603A
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China
Prior art keywords
condenser
air
cool
heat
evaporator
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Pending
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CN201910223289.6A
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Chinese (zh)
Inventor
赵辉
廖展光
李启龙
张长余
李勇
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Guangzhou Jim Storage Technology Development Co Ltd
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Guangzhou Jim Storage Technology Development Co Ltd
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Priority to CN201910223289.6A priority Critical patent/CN109945603A/en
Publication of CN109945603A publication Critical patent/CN109945603A/en
Pending legal-status Critical Current

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Abstract

The present invention relates to a kind of enclosed heat pump drying systems, it includes the drying chamber that connection is circuited sequentially by air duct, dehumidifier, evaporator, cross cool condenser and condenser, the drying chamber is provided with air inlet and return air inlet, the return air inlet is connect with the dehumidifier by air duct, the return air inlet is also connect with the cool condenser excessively by air duct, cool condenser gas supply is crossed to described, the enclosed heat pump drying system further includes compressor and expansion valve, the compressor, condenser, cross cool condenser, connection is circuited sequentially by medium channel between expansion valve and evaporator.The enclosed heat pump drying system carries out two-stage dehumidifying to air by dehumidifier and evaporator, make full use of the thermal energy of system, cool condenser and condenser was used to carry out step heating to the air after dehumidifying simultaneously, the energy consumption of drying system can be greatly decreased, and since the system is closed system, air after drying materials will not be emitted, therefore atmosphere will not be polluted.

Description

A kind of enclosed heat pump drying system
Technical field
The present invention relates to dry materials field more particularly to a kind of enclosed heat pump drying systems.
Background technique
In the prior art, it often needs to dry sludge, wet mash etc. using drying equipment.Existing drying equipment, Dehumidify frequently with the mode of electric heater for heating, directly convert electrical energy into thermal energy, or using high-temperature steam or Hot water exchanges heat to dehumidify.Both modes all exist energy consumption it is higher, dehumidifying after air direct emission can pollute atmosphere etc. Problem.And existing enclosed heat pump drying system, wind path Exchange of apparent heat is carried out using heat-exchangers of the plate type, there are Cryogenic air ratios Water capacity is low, and it is big that same moisture removal needs to condense air quantity, and ratio is low, and system drying efficiency is low for dehumidifying for heat pump system refrigerating capacity The problems such as.
Summary of the invention
Based on the deficiencies of the prior art, it is an object of that present invention to provide a kind of enclosed heat pump drying systems of low energy consumption.
The embodiment of the present invention provides a kind of enclosed heat pump drying system comprising circuits sequentially connection by air duct Drying chamber, dehumidifier, evaporator and condenser assembly, the drying chamber are provided with air inlet and return air inlet, the return air inlet with it is described Dehumidifier is connected by air duct, and the dehumidifier carries out first time dehumidifying, the steaming to the air that the return air inlet is discharged Hair device carries out second to the air that the dehumidifier is discharged and dehumidifies, and the condenser assembly adds the air after dehumidifying Heat, the air inlet are connect with the condenser assembly by air duct, and the air after condenser assembly heating is from institute It states air inlet to input in the drying chamber, the return air inlet is also connect with the condenser assembly by air duct, to described cold Condenser component gas supply, the enclosed heat pump drying system further includes compressor and expansion valve, the compressor, condenser assembly, Connection is circuited sequentially by medium channel between expansion valve and evaporator.
As the further improvement of above-described embodiment, the enclosed heat pump drying system further includes waste-heat recoverer, in sky Gas flows on direction, the waste-heat recoverer between the evaporator and condenser assembly, and with the evaporator and Condenser assembly connection, in flowing on direction for heat transferring medium, the waste-heat recoverer is located at the condenser assembly and described Between expansion valve, and it is connected to the condenser assembly and the expansion valve.
As the further improvement of above-described embodiment, the enclosed heat pump drying system further includes heat exchanger, the heat exchange Be provided in device first medium entrance, the first heat exchanger channels, first medium outlet, second medium entrance, the second heat exchanger channels and Second medium outlet, the first medium entrance are connected to the media outlet of the condenser assembly, first medium entrance, first Heat exchanger channels, first medium outlet, expansion valve, evaporator medium inlet, evaporator media outlet, second medium entrance, second Heat exchanger channels, second medium outlet and compressor medium entrance are sequentially connected in series, first heat exchanger channels and the second heat exchanger channels Heat exchange mutually.
As the further improvement of above-described embodiment, the drying chamber is provided with feed inlet, discharge port and conveyer belt, described defeated Send band the material entered from the feed inlet can be transported to the discharge port.
As the further improvement of above-described embodiment, the dehumidifier is connected with cooling device.
As the further improvement of above-described embodiment, the cooling device is heat exchange of heat pipe;Or the cooling device is Cooling tower.
Air duct as the further improvement of above-described embodiment, between the return air inlet of the drying chamber and the dehumidifier Inside it is provided with deduster;And/or
Air blower is provided in air duct between the air inlet and condenser assembly of the drying chamber.
As the further improvement of above-described embodiment, the condenser assembly included cool condenser and condenser, in sky Gas flows on direction, and the drying chamber, dehumidifier, evaporator, cool condenser excessively are circuited sequentially with condenser and be connected to, and is situated between in heat exchange Matter flows on direction, and the compressor, condenser, cool condenser, expansion valve excessively are circuited sequentially with evaporator and be connected to, the mistake Cool condenser heats the air after dehumidifying, and the condenser heats the air for crossing cool condenser discharge again, The return air inlet is also connect with the cool condenser excessively by air duct, crosses cool condenser gas supply to described.
As the further improvement of above-described embodiment, the drying chamber is provided with multiple air inlets, multiple corresponding condensers And multiple corresponding cool condensers excessively, each air inlet are connected with corresponding condenser, flow to direction in heat transferring medium On, multiple condensers are connected in parallel, it is each cross cool condenser with corresponding condenser be connected in series, the return air inlet respectively with Multiple cool condensers of crossing are connected to by air duct.
As the further improvement of above-described embodiment, the enclosed heat pump drying system further includes a waste-heat recoverer, In flowing on direction for air, the waste-heat recoverer is located between the evaporator and the multiple cool condenser excessively, and with The evaporator is connected to multiple cool condensers of crossing, and the multiple cool condenser of crossing is connected in parallel, in the flow direction side of heat transferring medium Upwards, the waste-heat recoverer is crossed between cool condenser and the expansion valve positioned at the multiple, and cold with the multiple supercooling Condenser is connected with the expansion valve, and the multiple media outlet for crossing cool condenser is parallel-connected to Jie of the waste-heat recoverer Matter entrance.
Enclosed heat pump drying system provided by the invention, system energy efficiency is higher, consumes energy low, and since the system is to close Formula system will not emit the air after drying materials, therefore will not pollute atmosphere.
Detailed description of the invention
It is more particularly described by the preferred embodiment of the present invention shown in the drawings, the above and other purpose of the present invention, feature It will be become more fully apparent with advantage.Identical appended drawing reference indicates identical part in all the attached drawings, and not deliberately by real Size equal proportion scaling in border draws attached drawing, it is preferred that emphasis is shows this purport.
Fig. 1 is the structural schematic diagram of enclosed heat pump drying system provided by the invention.
Fig. 2 is the schematic illustration of enclosed heat pump drying system provided by the invention.
Fig. 3 is the structural schematic diagram of the heat exchanger in Fig. 1.
Specific embodiment
To facilitate the understanding of the present invention, below with reference to relevant drawings to being originally described more fully.
It should be noted that it can be directly to separately when an element is considered as " connection " another element One element and it is in combination be integrated, or may be simultaneously present centering elements.Term as used herein " installation ", " one End ", " other end " and similar statement are for illustrative purposes only.
Fig. 1 to Fig. 3 is please referred to, the embodiment of the present invention provides a kind of enclosed heat pump drying system comprising logical by air Drying chamber 2, dehumidifier 4, evaporator 5, condenser assembly namely the air that road 11 (namely air pipeline) circuits sequentially connection are drying Room 2, evaporator 5, circuits sequentially circulation in condenser assembly at dehumidifier 4.Drying chamber 2 is provided with air inlet 21 and return air inlet 22, returns Air port 22 is connect with dehumidifier 4 by air duct 11, and the air for return air inlet 22 to be discharged carries out first time cool-down dehumidification, Evaporator 5 carries out second of cool-down dehumidification, the condensation that dehumidifier 4 and evaporator 5 generate after dehumidifying to the air that dehumidifier 4 is discharged Water is emitted by condensed water elimination channel (not shown).Condenser assembly heats the air after dehumidifying, air inlet 21 are connect with condenser assembly by air duct 11, and the air after condenser assembly heating inputs in drying chamber 2 from air inlet 21. Specifically, air blower 27, air blower 27 are provided in the air duct 11 between the air inlet 21 and condenser assembly of drying chamber 2 Air after condenser assembly is heated is input in drying chamber 2.Return air inlet 22 is also connected with condenser assembly by air duct 11 It connects, is supplied to condenser assembly, that is, portion of air is successively through dehumidifier 4, evaporator in the air that return air inlet 22 is discharged 5, it after condenser assembly dehumidifies and heats, returns in drying chamber 2, another part air then directly returns to after condenser assembly heats In drying chamber 2.
The enclosed heat pump drying system further includes compressor 35 and expansion valve 36, compressor 35, condenser assembly, expansion valve Connection is circuited sequentially by medium channel 12 between 36 and evaporator 5, heat transferring medium (namely refrigerant, such as freon) is made to exist It is circulated between these components.Specifically, compressor 35 is by low-temp low-pressure gaseous refrigerant boil down to high pressure gaseous Refrigerant, supplies condenser assembly, and high temperature and high pressure gaseous refrigerant condenses and discharged in condenser assembly latent heat, becomes high temperature The refrigerant of high pressure liquid refrigerant, condenser assembly discharge becomes low-temp low-pressure liquid system after expansion valve 36 releases stress Cryogen, low-temp low-pressure liquid refrigerant gasify and absorb heat in evaporator 5, become low-temp low-pressure gaseous refrigerant, while making sky The cooling condensation of vapor in gas, to dehumidify, then low-temp low-pressure gaseous refrigerant is input in compressor 35 again and becomes For high temperature and high pressure gaseous refrigerant, loop back and forth like this.
It should be noted that the drying chamber 2, dehumidifier 4, evaporation mentioned above for circuiting sequentially connection by air duct 11 Device 5 and condenser assembly can be direct connection between adjacent component, be also possible to indirect communication, such as evaporator 5 and condensation Other component, such as waste-heat recoverer 6 can also be set between device assembly.Similarly, compressor 35, condenser assembly, expansion Be also possible between the adjacent component of more than 5 person of valve 36 and evaporator directly be connected to or indirect communication, such as condenser assembly and The components such as waste-heat recoverer 6 and heat exchanger 3 can also be set between expansion valve 36.
For the enclosed heat pump drying system in running, condenser assembly heats air, then by the height after heating Warm dry air is input in drying chamber 2, is made in drying chamber 2 full of high temperature dry air, high temperature dry air and the wet object in drying chamber 2 After material (such as sludge or food powder) is come into full contact with, the moisture in material is evaporated, high temperature and humidity air is obtained.It is high Warm highly humid air by drying chamber 2 return air inlet 22 export after, a part enter dehumidifier 4, be cooled in dehumidifier 4 dew point with Under, first time dehumidifying is carried out, humid air in medium temperature is obtained.Humid air enters in evaporator 5 in the medium temperature that dehumidifier 4 is discharged, Due to the low-temp low-pressure heat transferring medium evaporation endothermic in evaporator 5, to make to make in air by the air cooling-down of evaporator 5 Condensation vapor, carry out second and dehumidify, obtain low temperature dry air.The moisture removal of dehumidifier 4 accounts for about dehumidifier 4 and evaporator The 15% of the sum of 5 total moisture removal, other 85% moisture removals are the moisture removal of evaporator 5.The low temperature being discharged from evaporator 5 is dry Dry air sequentially enters condenser assembly and is heated, and obtains high temperature dry air.The high temperature being discharged from condenser assembly is dry Dry air enters the inside of drying chamber 2 by the air inlet 21 of drying chamber 2, is dried again to material.Due to return air inlet 22 Air output is big and temperature is higher, if be all delivered in dehumidifier 4, since the sensible heat of high temperature and humidity air is higher, causes to dehumidify Device 4 and evaporator 5 are difficult to such a large amount of high temperature and humidity air being cooled to dew point hereinafter, therefore can not dehumidify.For this purpose, A part of high temperature and humidity air delivery is dehumidified into dehumidifier 4 only, and other high temperature and humidity air are then directly transported Into condenser assembly, mixes with the low temperature dry air to come is conveyed from evaporator 5, conveyed again after condenser assembly heats Into drying chamber 2.
In a preferred embodiment, condenser assembly included cool condenser 7 and condenser 8, in flowing on direction for air, Drying chamber 2, dehumidifier 4, evaporator 5, cool condenser 7 excessively are circuited sequentially with condenser 8 and are connected to, and flow to direction in heat transferring medium On, compressor 35, condenser 8 cross cool condenser 7, expansion valve 36 and circuit sequentially and be connected to evaporator 5, and mistake cool condenser 7 is to removing Air after wet carries out first time heating, crosses the air that cool condenser 7 is discharged for 8 pairs of condenser and is heated again.By compressor The high temperature and high pressure gaseous refrigerant of 35 supply condensers 8, condenses heat release in condenser 8, becomes high temperature and pressure liquid refrigerant, It crosses cool condenser 7 and condensed high temperature and pressure liquid refrigerant is further subcooled and is discharged latent heat, refrigeration can be reduced in this way Gasification ratio of the agent in expansion valve 36 improves evaporation endothermic amount of the refrigerant in evaporator 5, improves dehumidification efficiency.Moreover, Since low temperature dry air passed through cool condenser 7 and condenser 8 divides step to heat, the circulation temperature rise of system can be reduced (i.e. the difference of condensation temperature and evaporating temperature), improves the heat efficiency of system.Return air inlet 22 also passes through sky with cool condenser 7 excessively Gas channel 11 connects, and to the portion of air for crossing the gas supply of cool condenser 7 namely the discharge of return air inlet 22, it is cold to enter directly into supercooling It is heated in condenser 7, and is dehumidified without dehumidifier 4 and evaporator 5.In other embodiments, condenser assembly Can only have condenser 8 without crossing cool condenser 7.
In a preferred embodiment, which further includes waste-heat recoverer 6, flows to direction in air On, waste-heat recoverer 6 passes through air duct between evaporator 5 and condenser assembly, and with evaporator 5 and condenser assembly 11 connection, in flowing on direction for heat transferring medium, waste-heat recoverer 6 between condenser assembly and expansion valve 36, and with it is cold Condenser component is connected to expansion valve 36 by medium channel 12.Specifically, flowing on direction in air, waste-heat recoverer 6 It positioned at evaporator 5 and crosses between cool condenser 7, in flowing on direction for heat transferring medium, waste-heat recoverer 6 was located at cool condenser Between 7 and expansion valve 36.From the high temperature and pressure liquid refrigerant crossing cool condenser 7 and being discharged, in waste-heat recoverer 6 and from evaporation Device 5 conveys the low temperature dry air to come and exchanges heat, and making low temperature dry air heating is middle temperature is dried air, the sky after heating Gas was transported to cool condenser 7, and the refrigerant after heat exchange is then conveyed to 36 direction of expansion valve.Low temperature dry air passes through waste heat Recover 6, condenser assembly divide step to heat, and can reduce circulation temperature rise (the i.e. difference of condensation temperature and evaporating temperature of system Value), improve the heat efficiency of system.
Referring to FIG. 3, in a preferred embodiment, which further includes heat exchanger 3, set in heat exchanger 3 It is equipped with first medium entrance 31, the first heat exchanger channels 38, first medium and exports 34, second medium entrance 33, the second heat exchanger channels 37 and second medium outlet 32, first medium entrance 31 is connected to the media outlet of condenser assembly, first medium entrance 31, the One heat exchanger channels, first medium export 34, expansion valve 36, evaporator medium inlet, evaporator media outlet, second medium entrance 33, the second heat exchanger channels, second medium outlet 32 and compressor medium entrance are sequentially connected in series, and the first heat exchanger channels 38 and second change The passage of heat 37 exchanges heat mutually.The high temperature and pressure liquid refrigerant to come is conveyed from condenser assembly direction, from first medium entrance After 31 enter heat exchanger 3, successively by the first heat exchanger channels 38, first medium outlet 34 and expansion valve 36, become low-temp low-pressure Then liquid refrigerant enters in evaporator 5 from evaporator medium inlet, it is low to become low temperature for evaporation of absorbing heat in evaporator 5 Gaseous refrigerant is pressed, outside evaporator media outlet discharge evaporator 5, then and successively passes through second medium entrance 33, second Heat exchanger channels 37, second medium outlet 32 and compressor medium entrance, are transported in compressor 35.Flow through the first heat exchanger channels 38 high temperature and pressure liquid refrigerant, partial heat pass through the mutual heat exchange of the first heat exchanger channels 38 and the second heat exchanger channels 37 It is transported to the low-temp low-pressure gaseous refrigerant for flowing through the second heat exchanger channels 37, on the one hand can be lowered into the system of evaporator 5 The temperature of cryogen improves the dehumidification efficiency of evaporator 5, the temperature of the refrigerant into compressor 35 on the other hand can be improved, The energy consumption for reducing compressor 35, to keep the enclosed heat pump drying system more energy saving.
Referring to FIG. 1, in a preferred embodiment, drying chamber 2 is additionally provided with feed inlet 23 and discharge port 24, feed inlet 23 is connected There is dewaterer 231, which can be helical ring dish-style dewaterer.Due to by the dewatered material of dewaterer 231 according to So contain moisture, can not be dehydrated completely, therefore enters drying chamber 2 via feed inlet 23 by the dewatered material of dewaterer 231 Drying and processing is carried out, guarantees that the water content of treated material is lower.Discharge port 24 is connected with siccative collection device 241, siccative Collection device 241 includes Material sucking machine 242 and siccative storehouse 243, and Material sucking machine 242 is by treated the material inspiration siccative of drying chamber 2 Storehouse 243 is collected processing.Conveyer belt 25 is additionally provided in drying chamber 2, conveyer belt 25 can be defeated by the material entered from feed inlet 23 It is sent to discharge port 24.Drying chamber can be entered through feed inlet 23 by motor driving conveying belt 25, the dewatered material of dewaterer 231 2, and fall on conveyer belt 25, material is contacted directly with the high temperature dry air in drying chamber 2 while transport, finally will Material transportation is handled to discharge port 23 and by 241 collection of siccative collection device.
Fig. 1 and Fig. 2 are please referred to, in a preferred embodiment, dehumidifier 4 is also connected with cooling device 9, for being dehumidifier 4 Interior heat exchanger tube cooling.The cooling device 9 can be heat exchange of heat pipe 91, in dehumidifier 4 in the way of heat-pipe air-cooling Heat exchanger tube cooling.The cooling device is also possible to using the cooling of cooling tower 92, using in heat exchanger tube of the water pump 93 dehumidifier 4 Cooling water is evacuated in cooling tower 92, carries out circulating cooling.The dehumidifier 4 is the hot dehumidifier of redundancy, and one side passes through cold But device 9 is by outside system redundancy hot driving to system caused by the enclosed heat pump drying system, on the other hand by return air inlet 22 The partial air of discharge is cooling, carries out first time dehumidifying after being down to dew-point temperature.
In a preferred embodiment, deduster is provided in the air duct 11 between the return air inlet 22 and dehumidifier 4 of drying chamber 2 26, it prevents the dust in material from entering air duct 11 to damage the component of enclosed heat pump drying system, also avoids in system A large amount of dust is accumulated, component normal operation is influenced.
In a preferred embodiment, the air inlet 21 of drying chamber 2 and the condenser assembly (condenser specially in condenser assembly 8) air blower 27 is provided in the air duct 11 between, 27 energy air blast in drying chamber of air blower, is the flowing of air in system Power is provided.
Referring to FIG. 1, in a preferred embodiment, drying chamber 2 is provided with multiple air inlets 21, preferably can be set there are two Air inlet 21.Each air inlet 21 is correspondingly connected with a condenser 8 and one is crossed cool condenser 7, and condensation can be enhanced in this way Device 8 and excessively cool condenser 7 also make more high temperature dry airs enter drying chamber 2 heating effect of air, and enhancing drying chamber 2 is done Dry effect.Air blower 27 is provided between each condenser 8 and corresponding air inlet 21.Direction is flowed in heat transferring medium On, multiple condensers 8 be connected in parallel namely the medium inlet of multiple condensers 8 it is in parallel after connect compressor 35 media outlet. Each cool condenser 7 of crossing is connected in series with corresponding condenser 8.Return air inlet 22 passes through sky with multiple cool condensers 7 of crossing respectively The connection of gas channel namely return air inlet 22 are connected to dehumidifier 4 and multiple cool condensers 7 of crossing respectively by air duct, will be high Warm highly humid air is delivered in dehumidifier 4 and multiple cool condensers 7 excessively.
In a further preferred embodiment, enclosed heat pump drying system further includes a waste-heat recoverer 6, in air Flow on direction, waste-heat recoverer 6 be located at evaporator 5 and it is multiple cross cool condenser 7 between, and with evaporator 5 and multiple supercoolings Condenser 7 is connected to, and multiple cool condensers 7 of crossing are connected in parallel, and in flowing on direction for heat transferring medium, waste-heat recoverer 6 is located at more It is a to cross between cool condenser 7 and expansion valve 36, and cool condensers 7 are crossed and expansion valves 36 connects, multiple mistake cool condensers 7 with multiple Media outlet be parallel-connected to the medium inlet of waste-heat recoverer 6.The supercooling refrigerants being discharged from multiple cool condensers 7 excessively, It is pooled in waste-heat recoverer 6, exchanges heat in waste-heat recoverer 6 with the low temperature dry air to come from the conveying of evaporator 5, Making low temperature dry air heating is middle temperature is dried air, is then transported to multiple cool condensers 7 excessively, the supercooling after heat exchange Refrigerant is then conveyed to 36 direction of expansion valve.Low temperature dry air is divided by waste-heat recoverer 6, excessively cool condenser 7 and condenser 8 Step heating, can reduce the circulation temperature rise (i.e. the difference of condensation temperature and evaporating temperature) of system, improve the heating energy of system Effect.
Enclosed heat pump drying system provided by the invention, system energy efficiency is higher, consumes energy low, and since the system is to close Formula system will not emit the air after drying materials, therefore will not pollute atmosphere.
Moreover, enclosed heat pump drying system provided by the invention can be run under middle temperature operating mode, compared in low temperature work The enclosed heat pump drying system run under condition, with higherEfficiency.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.
The several embodiments invented above described embodiment only expresses, the description thereof is more specific and detailed, but not It can therefore be construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art, Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection model of the invention It encloses.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims (10)

1. a kind of enclosed heat pump drying system, which is characterized in that drying chamber, dehumidifying including circuiting sequentially connection by air duct Device, evaporator and condenser assembly, the drying chamber are provided with air inlet and return air inlet, and the return air inlet passes through with the dehumidifier Air duct connection, the dehumidifier carry out first time dehumidifying to the air that the return air inlet is discharged, and the evaporator is to described The air of dehumidifier discharge carries out second and dehumidifies, and the condenser assembly heats the air after dehumidifying, the air inlet Mouth is connect with the condenser assembly by air duct, and the air after the condenser assembly heating is inputted from the air inlet In the drying chamber, the return air inlet is also connect with the condenser assembly by air duct, Xiang Suoshu condenser assembly gas supply, The enclosed heat pump drying system further includes compressor and expansion valve, the compressor, condenser assembly, expansion valve and evaporator Between connection circuited sequentially by medium channel.
2. enclosed heat pump drying system as described in claim 1, which is characterized in that the enclosed heat pump drying system further includes Waste-heat recoverer, in flowing on direction for air, the waste-heat recoverer between the evaporator and condenser assembly, and It is connected to the evaporator and condenser assembly, in flowing on direction for heat transferring medium, the waste-heat recoverer is located at described cold Between condenser component and the expansion valve, and it is connected to the condenser assembly and the expansion valve.
3. enclosed heat pump drying system as described in claim 1, which is characterized in that the enclosed heat pump drying system further includes Heat exchanger, be provided in the heat exchanger first medium entrance, the first heat exchanger channels, first medium outlet, second medium entrance, Second heat exchanger channels and second medium outlet, the first medium entrance are connected to the media outlet of the condenser assembly, the One medium inlet, the first heat exchanger channels, first medium outlet, expansion valve, evaporator medium inlet, evaporator media outlet, Second medium entrance, the second heat exchanger channels, second medium outlet and compressor medium entrance are sequentially connected in series, first heat exchanger channels It exchanges heat mutually with the second heat exchanger channels.
4. enclosed heat pump drying system as described in claim 1, which is characterized in that the drying chamber is provided with feed inlet, discharging The material entered from the feed inlet can be transported to the discharge port by mouth and conveyer belt, the conveyer belt.
5. enclosed heat pump drying system as described in claim 1, which is characterized in that the dehumidifier is connected with cooling device.
6. enclosed heat pump drying system as claimed in claim 5, which is characterized in that the cooling device is heat exchange of heat pipe; Or
The cooling device is cooling tower.
7. enclosed heat pump drying system as described in claim 1, which is characterized in that the return air inlet of the drying chamber and the dehumidifying Deduster is provided in air duct between device;And/or
Air blower is provided in air duct between the air inlet and condenser assembly of the drying chamber.
8. such as claim 1,3 to 7 described in any item enclosed heat pump drying systems, which is characterized in that the condenser assembly Including crossing cool condenser and condenser, in flowing on direction for air, the drying chamber, dehumidifier, evaporator, cross cool condenser and Condenser circuits sequentially connection, and in flowing on direction for heat transferring medium, the compressor, crosses cool condenser, expansion valve at condenser It circuits sequentially and is connected to evaporator, the cool condenser of crossing heats the air after dehumidifying, and the condenser is cold to being subcooled The air of condenser discharge is heated again, and the return air inlet is also connect with the cool condenser excessively by air duct, to institute Stated cool condenser gas supply.
9. enclosed heat pump drying system as claimed in claim 8, which is characterized in that the drying chamber be provided with multiple air inlets, Multiple corresponding condensers and multiple corresponding cool condensers excessively, each air inlet are connected with corresponding condenser, are being changed Thermal medium flows on direction, and multiple condensers are connected in parallel, and each cool condenser of crossing is connected in series with corresponding condenser, The return air inlet is connected to multiple cool condensers excessively by air duct respectively.
10. enclosed heat pump drying system as claimed in claim 9, which is characterized in that the enclosed heat pump drying system also wraps A waste-heat recoverer is included, in flowing on direction for air, the waste-heat recoverer is located at the evaporator and the multiple mistake Between cool condenser, and it is connected to the evaporator and multiple cool condensers of crossing, the multiple cool condenser of crossing is connected in parallel, Heat transferring medium flows on direction, and the waste-heat recoverer is crossed between cool condenser and the expansion valve positioned at the multiple, and It is connect with the multiple cool condenser and the expansion valve excessively, the multiple media outlet for crossing cool condenser is parallel-connected to institute State the medium inlet of waste-heat recoverer.
CN201910223289.6A 2019-03-22 2019-03-22 A kind of enclosed heat pump drying system Pending CN109945603A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110285651A (en) * 2019-07-23 2019-09-27 佛山市瑞海制冷设备有限公司 A kind of air heat humidity method of tobacco roasting device
CN110360813A (en) * 2019-07-23 2019-10-22 佛山市瑞海制冷设备有限公司 A kind of tobacco roasting heat-pump apparatus cooling tower cooling system
CN111750623A (en) * 2020-06-15 2020-10-09 大连交通大学 Intelligent umbrella drying-machine
CN112880381A (en) * 2021-01-29 2021-06-01 同济大学 Closed heat pump drying system of networking of many heat exchangers reorganization

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110285651A (en) * 2019-07-23 2019-09-27 佛山市瑞海制冷设备有限公司 A kind of air heat humidity method of tobacco roasting device
CN110360813A (en) * 2019-07-23 2019-10-22 佛山市瑞海制冷设备有限公司 A kind of tobacco roasting heat-pump apparatus cooling tower cooling system
CN111750623A (en) * 2020-06-15 2020-10-09 大连交通大学 Intelligent umbrella drying-machine
CN112880381A (en) * 2021-01-29 2021-06-01 同济大学 Closed heat pump drying system of networking of many heat exchangers reorganization

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