CN104482748B - Air source heat pump hot-air fan with combined operating modes - Google Patents

Air source heat pump hot-air fan with combined operating modes Download PDF

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Publication number
CN104482748B
CN104482748B CN201410725643.2A CN201410725643A CN104482748B CN 104482748 B CN104482748 B CN 104482748B CN 201410725643 A CN201410725643 A CN 201410725643A CN 104482748 B CN104482748 B CN 104482748B
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air
chamber
drying
dehumidifying
passage
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CN104482748A (en
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汤世国
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Hunan Liuyang Zeming Thermodynamic Equipment Co Ltd
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Hunan Liuyang Zeming Thermodynamic Equipment Co Ltd
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Abstract

The invention discloses an air source heat pump hot-air fan with combined operating modes. A housing of an air source heat pump is divided into a first cavity and a second cavity. When an automatic valve is closed, a drying chamber is heated by relatively closed circulating air under the action of a condenser fan. When materials in the drying chamber are heated to a certain temperature, the humidity is increased, the automatic air valve is opened, and an air inlet of the evaporator is used as a fresh air inlet of the drying chamber. On the basis of the integral system structure and cold air utilization after heat exchange of an evaporator, opening and closing of the automatic valve are used as conversion conditions, a material drying way performing dehumidifying and humidity elimination simultaneously is created, and organic combination of various operating modes is realized. The integral function tendency of the system can be automatically, flexibly and conveniently changed, and different and conflicting requirements of various stages of material drying are met. In addition, energy efficiency ratio and material drying speed can be greatly increased, and equipment investment is saved.

Description

A kind of air-source heat-pump air heater with Combined-operating mode
Technical field
The present invention relates to a kind of air-source heat-pump air heater for drying materials.
Background technology
Drying materials be usually using air as heating medium, with higher than or apparently higher than temperature of charge heat energy to material Heated, the air of heating is contacted with surface of material, hot-air is lowered the temperature, material absorbs thermal temperature and raises, after material heating, Or vaporized to inner its moisture content heat absorption evaporation by table, hydrone becomes damp-heat air together with heating medium, and wet-emitting blower is discharged dry Dry outdoor.
Air source heat pump is mainly by condenser, condenser fan, compressor, throttling arrangement, vaporizer, evaporator fan group Become, compressor, condenser, throttling arrangement, vaporizer, sequentially use working medium pipeline connect, formed a closed circuit.
Hothouse using air source heat pump widely uses in the production activity of people, mainly wet-emitting blower dehumidifying Type and evaporator condensation dehumidification type two class, the deficiency of two classes is described below:
1st, dehumidifying type air source heat pump hothouse, using circulated air heating, its heating, drying mode is: air source heat pump , to the air heat absorption in environment, to condenser heat supply, condenser is by condenser for the high temperature refrigerant after compressor compression for vaporizer Blower fan sends into hot blast to hothouse, and the top of hothouse is provided with air -return duct and moisture exhausting port, and return air is fed again into condensing by air -return duct Device, forms circulated air heating.Wet-emitting blower is set in hothouse moisture exhausting port, when the air humidity being dried indoor increases to certain journey When spending, wet-emitting blower is actuated for convulsion dehumidifying.Form negative pressure, fresh wind port enters the fresh air of ambient temperature during dehumidifying.Humidity drops Low, interior temperature of charge is dried and does not typically decline, air themperature typically declines 1-2 DEG C.Humidity is reduced to certain limit, dehumidifying wind Machine quits work.With the carrying out of heating, dehumidifying, indoor temperature is dried and raises, material moisture content is gradually lowered, when dry interior thing When material water content is very low, that is, reach the purpose that material is dried.
In order to improve its heat utilization rate, connect air-to-air total heat exchanger in moisture exhausting port and carry out recuperation of heat, ambient temperature is new Wind carries out heat exchange by air-to-air total heat exchanger and damp-heat air, and fresh air temperature after exchanging raises and is re-fed at condenser air intake, But the damp-heat air after heat exchange is typically still to exceed 10 40 DEG C of ambient temperature air, carries substantial amounts of heat and discharge drying Outdoor.Therefore, prior art adopts air-to-air total heat exchanger, has only served the new wind action of heating environment temperature.
Compared with following dehumidification types, though its Energy Efficiency Ratio improves a lot, its weak point is dehumidifying type: 1) dehumidifying is taken out During wind, even across Waste Heat Recovery, 35% about can only be reclaimed, still have substantial amounts of heat to discharge and outdoor is dried, cause a large amount of Energy waste;2) in the whole drying course of material, the effect of drying (rate of drying) of dehumidifying type is than the effect of drying of dehumidification type Really (rate of drying) is far short of what is expected;3) fresh air that dehumidifying supplements is the air in environment, does not carry out dehumidification treatments;Above-mentioned three Item shortcoming reduces the rate of drying of material.
2nd, dehumidification type air source heat pump hothouse, not to the air heat absorption in environment, absorption is hothouse to its vaporizer Heat in interior damp-heat air, damp-heat air forms droplet from conduit through vaporizer absorbing and cooling temperature, moisture content condensation therein Middle outflow.In vaporizer, the working medium of heat absorption is compressed into pressure high temperature hot gas through compressor, using condenser heat rejection, indoor to drying Material is heated, and after material heating, dries indoor air humidity and increases, and damp-heat air is again through vaporizer cooling and dehumidifying, week And renew using circulated air heating.
The deficiency of this technical scheme is: when interior material initial heating 1) is dried, vaporizer cooling and dehumidifying is nonsensical, because In order to be dried, indoor air temperature is less with the ambient temperature temperature difference to be reached dew point and is dehydrated it is impossible to make to be dried room air.On the contrary, by In vaporizer cooling, the time that interior material initial heating is dried is made to be obviously prolonged.2) air-source heat-pump air heater is in one Run in the environment of sealing or opposing seal it is impossible to absorb heat from external environment condition, the energy that heat pump heats is removed by evaporator condensation Wet offseted greatly, Energy Efficiency Ratio only has 1.0 about, and Energy Efficiency Ratio is too low, and material heat temperature raising speed is slow, only ratio resistance The drying effect of type is better, does not play the advantage that air source heat pump efficiently heats, and dry materials speed is not so good as dehumidifying type Air source heat pump.
Content of the invention
In order to overcome the deficiencies in the prior art, the technical problem to be solved is to expand air-source heat-pump air heater Drying capacity and energy-saving potential, provide a kind of air source heat pump being provided simultaneously with stronger dry materials ability and higher Energy Efficiency Ratio Hot-air blower, in order to solve described technical problem, the technical solution used in the present invention is,
A kind of air-source heat-pump air heater with Combined-operating mode is it is characterised in that the machine of described air source heat pump Shell is divided into first inner chamber and second inner chamber:
In first inner chamber, x chamber and y chamber are divided into by vaporizer, y chamber setting air inlet, x chamber are provided with device evaporator fan Air outlet;
In second inner chamber, air-inlet cavity and air-out chamber are divided into by condenser;Air-out chamber device condenser fan and air outlet; Air-inlet cavity connects the return air inlet of hothouse;
Air-to-air total heat exchanger is installed between first inner chamber and second inner chamber, and a passage air inlet of air-to-air total heat exchanger is placed in The air-inlet cavity of two inner chambers is simultaneously provided with self closing door, and a passage air outlet is placed in the y chamber of first inner chamber and is provided with heat exchanger blower fan;Entirely The b passage air inlet of heat exchanger is located at the x chamber of first inner chamber, and b passage air outlet is placed in described air intake intracavity;Described condenser Blower press is more than evaporator fan total head, in the air quantity that condenser fan receives, from the b passage air outlet of air-to-air total heat exchanger Air quantity be the 2~32% of evaporator fan total blast volume.
Using technique scheme:
1st, hothouse is formed when self closing door is closed with relative close type ground circulated air heat under condenser fan effect: Described relative closure refers to, when self closing door is closed, a passage is closed, and the air of the air-inlet cavity in second inner chamber is not divided Stream is it is difficult to form negative pressure;The b passage of air-to-air total heat exchanger has larger windage although condenser fan total head is more than evaporation simultaneously Device blower fan, still the air insufficient for first inner chamber x chamber second inner chamber is entered by b passage, or inlet is less, relatively It is negligible for overall air quantity.
It is warmed up to uniform temperature when interior material is dried, when humidity increases, self closing door is opened, condenser fan sucks and steams After sending out device heat exchange, cold wind supplements as fresh air so that interior formation malleation is dried, and indoor hot and humid gas work in malleation is dried Discharge outdoor with lower.As long as hothouse setting weep hole is it is no longer necessary to device wet-emitting blower.
2nd, the present invention, for effectively utilizes heat, carries out recuperation of heat using air-to-air total heat exchanger, and condenser fan sucks b passage Fresh air (i.e. cold wind after evaporator heat exchange) and a passage damp and hot return air, the fresh air of b passage after air-to-air total heat exchanger heat exchange, temperature Spend and be higher than or apparently higher than ambient temperature fresh air;After air-to-air total heat exchanger heat exchange, temperature substantially reduces and reaches the return air of a passage Air dew point temperature, condensed water instills the water-collecting tray below air-to-air total heat exchanger, and moisture content flows out along the mozzle of water-collecting tray.
Multiple action has been mixed: 1. make use of in prior art directly cold after the evaporator heat exchange of outer row in said process Wind, this cold wind is actual in vaporizer cooling procedure to be had been carried out once dehumidifying;Further, using dry after evaporator heat exchange , as new wind regime, temperature is relatively low for dry cold wind, condenses damp and hot return air through air-to-air total heat exchanger, better than the dehumidifying energy of ambient temperature fresh air Power, condensation water quantity increases, and effect on moisture extraction strengthens;2) during water vapor condensation, latent heat is released, and latent heat is fully utilized rate, returns Wind pathogenic wind-warm significantly improves.But in the prior art this part latent heat heat energy just as cannot using and be wasted.3) should Cold wind close to the pathogenic wind-warm of return air, takes full advantage of dehumidifying through air-to-air total heat exchanger heat temperature raising hence it is evident that being higher than ambient temperature fresh air Used heat;4) this cold wind reaches close to return air temperature dry fresh air entrance hothouse through air-to-air total heat exchanger heating simultaneously, in malleation Carry out dehumidifying under effect.
3rd, our company is explored through for many years field is dried, and " three-stage " of summarizing drying materials process is theoretical, and first Section process is material heating process, and surface of material is contacted with heated heating medium, and material surface temperature improves, surface of material Moisture content heat absorption evaporation, material subsurface also absorbs heat intensifications. the heating medium temperature of first paragraph heating process is typically in arrival 34 DEG C scope.
Second segment is that material enters the quick dehydration process of drying, and the moisture content of surface of material and subsurface becomes damp-heat air warp Hothouse moisture exhausting port is discharged or is discharged through dehumidifying, and this stage material dehydrating speed is very fast.Moisture content within material during being somebody's turn to do Ooze out (now requiring have of a relatively high temperature action to be just conducive to moisture content to ooze out from inside to outside), the water oozing out to surface of material Molecule enters in heating medium.Should during, very few unfavorable dry materials of dehumidifying air quantity, excessive dehumidifying air quantity can make drying Indoor temperature of charge reduces, and is unfavorable for that the moisture content within material oozes out to surface.
3rd section of dry run, the moisture content within material is less, will have bigger driving material internal moisture to external diffusion Ability, now need the fresh air of higher drying temperature and more low relative humidity to supplement the damp-heat air that dehumidifying is taken away.
The present invention with above-mentioned " three-stage " theoretical for guidance, disclosure satisfy that being actually needed of different material baking stage:
At the drying materials initial stage, self closing door closes, and makes material firing rate very fast, eliminates cold wind at the beginning of drying materials The negative influence of phase;
Material heated through a period of time, the scope of indoor relative humidity arrival setting is dried or temperature brings up to the model of setting When enclosing, self closing door automatically turns on, the cold wind after evaporator condensation dehumidifying, heats through air-to-air total heat exchanger as fresh air and enters drying Room.This fresh air is conducive to dry materials speed to accelerate and energy-conservation:
Enter the second stage of drying materials, the especially mid-term (during as 36 DEG C) of second stage or (such as 46 DEG C of later stage When), surface of material and core temperature essentially identical, the temperature difference is little.Now the moisture in material departs from material in the form of water vapour Enter heating medium, heating humidity of media increases, and now the top priority of dry materials is to take away drying in the most efficient manner The moisture content of heating indoor medium.Found by substantial amounts of experiment, only break through traditional dehumidifying or the mode of dehumidifying could improve The dry materials speed in this stage.
The present invention adopts the new wind regime as dehumidifying for the cold wind of evaporator heat exchange in this stage, and relative humidity is less than environment temperature Degree relative air humidity 6% about, typically 4 DEG C about of ambient temperature to be less than.Traditional view thinks cold less than ambient temperature Air is unfavorable to dry materials, and inventor finds through many experiments, in prior art, using air-to-air total heat exchanger heating environment temperature The fresh air of degree has two deficiencies: 1) heats fresh air through air-to-air total heat exchanger, condenses the inefficient of return air eliminating water.2) in this single order Section, the used heat heat of dry interior dehumidifying process has has more than needed in a large number, is not fully utilized.Cold wind using evaporator heat exchange is made For the new wind regime of dehumidifying, its consumption is the 2~32% of vaporizer cold wind hence it is evident that improve air-to-air total heat exchanger to return air eliminating water effect Rate.Meanwhile, after air-to-air total heat exchanger heating, its temperature rise effect reaches at or above air-to-air total heat exchanger heating ring to evaporator heat exchange cold wind The fresh air of border temperature.And, the cold wind relative humidity 5% of evaporator heat exchange, the return air being heated by condenser and fresh air, relatively Humidity will reduce by 10% about, creates condition drying time for shortening material second stage.
Dry materials enter the phase III, and temperature of charge is higher, such as more than 50 DEG C, and the relative humidity of heating medium mostly exists Less than 60%, the surface moisture content of material is few., its subsurface, the moisture content of core pass through pore to table taking plant material as a example Face is spread, and forms diffusion gradient.Reduce, now by self closing door, the amount that fresh air inputs hothouse, be conducive to improving heating medium Temperature, aggravation core moisture content to external diffusion;Evaporator heat exchange cold wind fresh air relative humidity is low, contacts with surface of material and takes away thing Moisture content.When temperature of charge reaches 60 DEG C or more than 60 DEG C, material enters drying regime.
From the foregoing, it will be observed that the present invention is achieved in heating and dehumidifying, dehumidifying pattern by way of disconnected, the logical action of fresh air Automatical and efficient switching.Be conducive to dehumidifying, dehumidifying and the drying of material.
4th, the heat pump vaporizer heat absorption of the present invention is that ambient temperature air is absorbed heat, and the Energy Efficiency Ratio of system is high, in ring 30 DEG C of border temperature is dried 55 DEG C of room temperature when material is dried, and Energy Efficiency Ratio reaches more than 4.1.
In sum, the beneficial effects of the present invention is, with overall system architecture setting and evaporator heat exchange after cold wind profit With based on, with the opening and closing of self closing door as switch condition, innovated the drying materials mode that dehumidifying, dehumidifying are carried out simultaneously, real Show the organic composite of multiple-working mode;Automatically, flexibly, easily can change system allomeric function to tend to, meet material Dry the difference in each stage or even conflicting needs;Significantly carrying of Energy Efficiency Ratio and drying materials speed can be taken into account simultaneously High;Save equipment investment.
On the basis of the above, inventor pass through substantial amounts of test find, material in second stage dehydration drying course, thing Material surface area, material moisture, material useful load, temperature of charge and heating medium relative humidity etc. factor is all to dehydration process All produce impact, drying materials dehydration process will be optimized, it is critical only that the dynamic equilibrium point that can find above-mentioned factor, and automatically The running status in this stage for the effective control system is agreed with this equilibrium point.
In order to realize this purpose, as a kind of optimal way of the present invention, described self closing door arranges two-parameter control Mode: when drying room temperature reaches the lower limit of setting, self closing door starts the action that turns down or close the door;Set when drying room humidity reaches During fixed higher limit, self closing door starts opens big or standard-sized sheet action.
Aforesaid way simplifies for ease of the controllable parameter operating numerous influence factors simulation so that fresh air is transported to drying The amount of room is just or slightly smaller, can keep efficient dehumidifying, remove wet condition, and does not make the heating of equipment have excessive having more than needed.Send out This design of a person of good sense achieves following beneficial effect;1), dry the dehydration stage, obtain most dehumidifying, dehumidifying air quantity, Material moisture content removes and achieves maximization.2), the heat that equipment heats is fully utilized, and avoids heat energy to greatest extent Have more than needed in a large number in the drying chamber and waste.3), disclosure satisfy that in the dry run of phase III different material be dried needs: As high plant material in sugared part is capable of " vexed water " (i.e. batch (-type) is blown) to hothouse, so that heating medium programming rate is added Hurry up, material core also obtains relatively fast intensification, moisture content diffuses to the surface, and is conducive to drying;Or in the way of little ventilation To hothouse air-supply, make room temperature is dried and gradually rise, it is to avoid because being rapidly heated impact material outward appearance, or be rapidly heated and make Material appearance " crusts ", leads to core to be difficult the ill effect of drying.
Preferably, the air outlet in described a air channel and the distance of vaporizer are referred to as the first distance, the air inlet in described y chamber It is referred to as second distance with the distance of vaporizer, described first distance is less than second distance.The hot blast making a air channel is with respect to new Wind preferentially enters vaporizer and evaporator fan.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Brief description
Accompanying drawing is present system principle of compositionality schematic diagram.
Specific embodiment
Referring to accompanying drawing, reflect a kind of concrete structure of the present invention, a kind of described air source heat with Combined-operating mode Pump hot-air blower connects hothouse 1 and air-to-air total heat exchanger 6, and the casing of described air source heat pump is divided into separate first inner chamber And second inner chamber:
In first inner chamber, x chamber 8 and y chamber 12 are divided into by vaporizer 9, y chamber 12 setting air inlet 10, x chamber 8 are provided with device and steam Send out the air outlet of device blower fan 7;
In second inner chamber, air-inlet cavity 4 and air-out chamber 13 are divided into by condenser 14;Air-out chamber 13 device condenser fan 15 With air outlet 16, air outlet 16 connection hothouse 1;Air-inlet cavity 4 connects the return air inlet 3 of hothouse 1;As long as hothouse 1 setting row Wet hole 2 is it is no longer necessary to device wet-emitting blower.
Air-to-air total heat exchanger 6 is installed between first inner chamber and second inner chamber, and a passage air inlet of air-to-air total heat exchanger 6 is placed in The air-inlet cavity 4 of second inner chamber, and it is provided with self closing door 5.A passage air outlet is placed in the y chamber 12 of first inner chamber and is provided with heat exchanger Blower fan 11;The b passage air inlet of air-to-air total heat exchanger 6 is located at the x chamber 8 of first inner chamber, and b passage air outlet is placed in described air-inlet cavity 4 Interior;Described condenser fan 15 total head is more than evaporator fan 7 total head, in the air quantity that condenser fan 15 receives, from full heat The air quantity of the b passage air outlet of heat exchanger 6 is the 2~32% of the total blast volume of evaporator fan 7.
In order to absolutely prove beneficial effects of the present invention, equivalent environment temperature, identical heat pump power, same dried room, Identical weight material is compared with dehumidifying type hothouse with identical operating mode, is heated using three air source heat pumps, and material is Fructus Jujubae, is dried 380 kilograms of the fresh fruit weight in interior, Interior Space size is dried: high 2 meters, long 3.2 meters, wide 1.8 meters. ring during drying 21~30 DEG C of border temperature.Specific embodiment is respectively described below:
1. using the air-source heat-pump air heater of present configuration:
Stoving process is as follows: start heating not dehumidifying, the closing of cold wind air door in 3 hours, makes indoor temperature arrival 38 DEG C is dried; It is then turned on cold wind air door to start to dehumidify, with 600m per hour3Cold wind is blown to hothouse through air-to-air total heat exchanger, adds through 5 hours Heat and dehumidifying, 3.6 kilograms about per hour of the dehumidifying condensed water flowing out from mozzle. room temperature is dried and rises to 41 DEG C;Then with 500m per hour3Cold wind is blown to hothouse through air-to-air total heat exchanger, 3.8 kilograms per hour of the dehumidifying condensed water flowing out from mozzle Left and right. heated and dehumidifying through 6 hours, room temperature is dried and rises to 48 DEG C;Then with 420m per hour3Cold wind through air-to-air total heat exchanger to Hothouse is blown, 3.5 kilograms about per hour of the dehumidifying condensed water flowing out from mozzle.Heated and dehumidifying through 4 hours, hothouse Temperature rises to 53 DEG C;Then with 380m per hour3Cold wind is blown to hothouse through air-to-air total heat exchanger, the dehumidifying flowed out from mozzle 3.1 kilograms about per hour of condensed water. heated and dehumidifying through 4 hours, room temperature is dried and rises to 60 DEG C;Then with per hour 260m3Cold wind is blown to hothouse through air-to-air total heat exchanger, heated through 4 hours and dehumidifies 22 hours, the dehumidifying flowed out from mozzle Average 1.9 kilograms about per hour of condensed water. room temperature is dried and rises to 65 DEG C;Start 26 hours, Fructus Jujubae degree of drying reaches will Ask, 76 degree of electricity consumption.
2. dehumidifying type hothouse:
1), start heating hothouse temperature rise in 4 hours is to 40 DEG C, now not dehumidifying.2), hothouse arranges two 60 watts of dehumidifying Blower fan carries out dehumidifying, and dehumidifying is arranged: in 7 hours from starting dehumidifying, often heats and has 1 minute to start dehumidifying in 5 minutes, do Dry room temperature rises to 45 DEG C;Heated through 7 hours again, often heat and in 6 minutes, have 1 minute to start dehumidifying, hothouse temperature rise is extremely 49℃;Heated through 9 hours again, often heat and have startup dehumidifying hothouse temperature rise in 1 minute in 7 minutes to 57 DEG C;Again through 6 Hour heating, often heats and has 1 minute to start dehumidifying in 8 minutes, hothouse temperature rise is to 64 DEG C;Through 33 hours heating, dryings Fructus Jujubae has reached requirement, 100 degree of power consumption.
The above-mentioned implementation of present invention description is merely to clearly illustrate technical scheme, and is not understood that It is that the present invention is made with any restriction.The present invention the art have known multiple substitute or deform, without departing from On the premise of essential meaning of the present invention, each fall within protection scope of the present invention.

Claims (3)

1. a kind of air-source heat-pump air heater with Combined-operating mode is it is characterised in that the casing of described air source heat pump It is divided into first inner chamber and second inner chamber:
In first inner chamber, x chamber and y chamber are divided into by vaporizer, y chamber setting air inlet, x chamber are provided with going out of device evaporator fan Air port;
In second inner chamber, air-inlet cavity and air-out chamber are divided into by condenser;Air-out chamber device condenser fan and air outlet;Air intake Chamber connects the return air inlet of hothouse;
Air-to-air total heat exchanger is installed between first inner chamber and second inner chamber, and a passage air inlet of air-to-air total heat exchanger is placed in second The air-inlet cavity in chamber is simultaneously provided with self closing door, and a passage air outlet is placed in the y chamber of first inner chamber and is provided with heat exchanger blower fan;Heat is changed entirely The b passage air inlet of hot device is located at the x chamber of first inner chamber, and b passage air outlet is placed in described air intake intracavity;Described condenser fan Total head is more than evaporator fan total head, in the air quantity that condenser fan receives, from the wind of the b passage air outlet of air-to-air total heat exchanger Amount is the 2~32% of evaporator fan total blast volume.
2. as claimed in claim 1 a kind of air-source heat-pump air heater with Combined-operating mode it is characterised in that described Self closing door arranges two-parameter control mode: when drying room temperature reaches the lower limit of setting, self closing door startup turns down or closes Door action;When drying room humidity reaches the higher limit of setting, self closing door starts opens big or standard-sized sheet action.
3. as claimed in claim 1 a kind of air-source heat-pump air heater with Combined-operating mode it is characterised in that described The air outlet of a passage is referred to as the first distance with the distance of vaporizer, and the described air inlet in y chamber and the distance of vaporizer are referred to as Second distance, described first distance is less than second distance so that the hot blast of a passage preferentially enters vaporizer and steaming with respect to fresh air Send out device blower fan.
CN201410725643.2A 2014-12-03 2014-12-03 Air source heat pump hot-air fan with combined operating modes Active CN104482748B (en)

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CN105318707B (en) * 2015-07-13 2018-09-14 潘亚平 A kind of multi-function drying dehumidification device and its drying dehumidification method
CN105222566B (en) * 2015-10-30 2017-12-19 江门市达能环保节能科技有限公司 A kind of heat pump drying system with dehumidifier and Waste Heat Reuse

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IT1270783B (en) * 1993-06-30 1997-05-07 Angelo Guarise DRYER PERFECTED FOR THE TREATMENT OF DRYING AND CONTINUOUS CONDITIONING OF VEGETABLE AND SYNTHETIC ANIMAL PRODUCTS
US8539789B2 (en) * 2009-08-17 2013-09-24 Johnson Controls Technology Company Heat-pump chiller with improved heat recovery features
CN201811551U (en) * 2010-09-29 2011-04-27 石曾矿 Novel multifunctional dehumidifying dryer
CN103256801A (en) * 2012-02-18 2013-08-21 中山火炬职业技术学院 Drying method combing heat pump drying, heat tube drying and microwave drying
CN103363795B (en) * 2012-03-28 2016-01-06 杭州迈驰除湿净化设备有限公司 The method of work of the energy saving heat pump high-temperature dehumidification circulatory system
CN203615716U (en) * 2013-10-23 2014-05-28 洛阳蓝海节能科技有限公司 Waste heat defrosting type heat pump dryer
CN204346064U (en) * 2014-12-03 2015-05-20 湖南省浏阳市择明热工器材有限公司 A kind of air-source heat-pump air heater with Combined-operating mode

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