CN209689295U - A kind of dehumidifying drying unit and drying unit that efficient dehumidification combination module being pre-chilled using air inlet - Google Patents
A kind of dehumidifying drying unit and drying unit that efficient dehumidification combination module being pre-chilled using air inlet Download PDFInfo
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- CN209689295U CN209689295U CN201821803588.4U CN201821803588U CN209689295U CN 209689295 U CN209689295 U CN 209689295U CN 201821803588 U CN201821803588 U CN 201821803588U CN 209689295 U CN209689295 U CN 209689295U
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- 238000007791 dehumidification Methods 0.000 title claims abstract description 45
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- 238000009833 condensation Methods 0.000 claims description 10
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
- F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/22—Tobacco leaves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses a kind of dehumidifying drying units and drying unit that efficient dehumidification combination module is pre-chilled using air inlet, it include at least two sets of heat pump units, heat pump unit includes being linked in sequence to constitute one for the compressor of the closed system of refrigerant circulation, condenser, throttling set, interior dehumidify evaporimeter；It further include having a cross-flow heat exchanger, cross-flow heat exchanger has the first heat exchanger channels and the second heat exchanger channels being alternately arranged, and is connected between the air outlet of the first heat exchanger channels and the air inlet of the second heat exchanger channels by a circulation canal；The interior dehumidify evaporimeter sequence arranged of more set heat pump units in circulation canal and is located at the first heat exchanger channels air outlet, and the first blower is provided at the air outlet of the second heat exchanger channels；The condenser of more set heat pump units is arranged sequentially the wind outlet of the first blower；Dry air-flow closed cycle, partial HAT from drying unit, sequence flows through the first heat exchanger channels, multiple interior dehumidify evaporimeters, circulation canal, the second heat exchanger channels, the first blower, it is mixed later with another part humid air from drying unit, using obtaining dry air after multiple condensers.
Description
Technical field
The utility model relates to dehumidification device design fields, and in particular to a kind of that efficient dehumidifying group is pre-chilled using air inlet
Mold the dehumidifying drying unit and drying unit of block.
Background technique
The heat pump drying device of air-flow closed cycle, by the Heat Pump blower fan group and carrying of production high temperature dry air containing wet
The drying spaces union of material forms.
Following Fig. 1, in the heat pump drying device of existing air-flow closed cycle, the high temperature drying of heat pump condenser production
Air carries out hot and humid area with containing wet stock, captures containing the moisture in wet stock and becomes warm-humid air and return to evaporator with heat pump,
Cool-down dehumidification filters out water vapour in evaporator, later enter condenser heat absorption heating, temperature elevated relative humidity reduce and again
It is secondary to become high temperature dry air, start next round circulation, wet stock is dry to be completed until containing.
The heat pump drying device of air-flow closed cycle, due to heat closed cycle, not containing the effective component in wet stock
As outer moisture-removing air-flow is discharged, thus dry matter yield rate improves, dry matter quality improves.
But in the operational process of air-flow closed cycle heat pump drying device, with the evaporation of the moisture containing wet stock, cold
Solidifying, relative humidity and the absolute moisture content for drying space air are all lower and lower, drying return air (i.e. the evaporator of drying heat pump into
Wind) temperature is higher and higher, water capacity is lower and lower, and cause the sensible heat load of evaporator (to put for absorbing drying return air cooling
The refrigerating capacity of heat) accounting in evaporator overall refrigerating effect is higher and higher, and damp and hot load (is steamed for absorbing water in drying return air
The refrigerating capacity of vapour condensation heat) accounting is lower and lower, until final damp and hot load accounting is zero, evaporator filter, which is not discharged, to be come；
And in the operational process of air-flow closed cycle heat pump drying device, the water vapour in dry air is constantly filtered out,
The relative humidity and water vapour absolute content in dry air are reduced, promotes the lasting evaporation containing moisture in wet stock, especially
The evaporation for solving a small amount of moisture remained in drying latter stage material is the key problem for drying operation.
It is higher and higher in order to cope with accounting of this sensible heat load of evaporator during heat pump drying in overall refrigerating effect
Efficient dehumidifying technology is pre-chilled in problem, people's utility model air inlet, i.e., plate heat exchanger is arranged in evaporator air inlet, makes
Plate heat exchanger and evaporator constitute one " air inlet pre-cooling module ", pass through plate heat exchanger with the low temperature outlet air of evaporator
" cold fluid pass " implements " pre-cooling " to the evaporator high temperature air inlet in " zone of heat liberation " of plate heat exchanger, reduces evaporator
The temperature of air inlet, the relative humidity for improving evaporator air inlet, thus reduce accounting of the evaporator sensible heat load in overall refrigerating effect,
Improve accounting, raising moisture removal of the damp and hot load in overall refrigerating effect.
The utilization of air inlet pre-cooling module changes the drying rate and drying effect of air-flow closed cycle heat pump drying device
Fruit, but new problem comes one after another:
In the early metaphase of air-flow closed cycle heat pump drying device operation, return air temperature is less high, relative humidity is relatively high,
Compared with the plate heat exchanger of small area evaporator can just entered the wind in the configuration of evaporator air inlet to be passed through by evaporator low temperature outlet air
Plate heat exchanger is pre-chilled to " saturation " (relative humidity 100%) state, and it is equally important that can guarantee that evaporator is entered the wind
Dew-point temperature is high, evaporator thermic load is high, evaporating pressure is high, refrigerant mass fluxes are big, refrigerating capacity is big, moisture removal is big；
And in the later period of air-flow closed cycle heat pump drying device operation, since drying return air temperature is raised, relative humidity
Reduce, dew-point temperature reduces, originally just seemed power in the plate heat exchanger of that " smaller " area of evaporator air inlet configuration
Not from the heart, evaporator air inlet can not be made by the outlet air of evaporator low temperature to be effectively pre-chilled to " saturation " state or close to saturation state,
Repeat again " accounting of the sensible heat load of evaporator in evaporator overall refrigerating effect be higher and higher, damp and hot load accounting increasingly
Low, until final damp and hot load accounting is zero, evaporator filter, which is not discharged, to be come, and the last one kilometer of drying course is not completed "
Old problem.
Utility model content
The technical issues of for proposing in background technique, the utility model provide a kind of using air inlet pre-cooling efficiently dehumidifying
The dehumidifying drying unit of composite module, includes at least two sets of heat pump units, and the heat pump unit includes being linked in sequence to constitute one
For the compressor of the closed system of refrigerant circulation, condenser, throttling set, interior dehumidify evaporimeter；
It further include having a cross-flow heat exchanger, there are the cross-flow heat exchanger the first heat exchanger channels and second being alternately arranged to change
The passage of heat is connected between the air outlet of first heat exchanger channels and the air inlet of second heat exchanger channels by a circulation canal
It is logical；The interior dehumidify evaporimeter sequence arranged of more set heat pump units is in the circulation canal and logical positioned at first heat exchange
At road air outlet, the first blower is provided at the air outlet of second heat exchanger channels；The condenser of more set heat pump units is suitable
Sequence is arranged in the wind outlet of first blower；
Air-flow closed cycle is dried, multiple interior dehumidify evaporimeters, cross-flow heat exchanger, multiple condensers are respectively positioned on
Humid air stream warp air duct in, partial HAT sequence flow through the first heat exchanger channels, multiple interior dehumidify evaporimeters, circulation canal,
Second heat exchanger channels, the first blower and then mixed with another part humid air, pass through obtained after multiple condensers it is dry empty
Gas.
Preferably, the cross-flow heat exchanger, multiple interior dehumidify evaporimeters, the circulation canal, first blower
Constitute an air inlet pre-cooling composite module.
Preferably, along airflow direction, the corresponding multiple condensers that put in order of multiple interior dehumidify evaporimeters
Arrangement mode is opposite.
Preferably, first blower uses variable air rate outer-rotor centrifugal fan.
Preferably, including two sets of heat pump units of the first heat pump unit and the second heat pump unit.
Preferably, first heat pump unit includes the first compressor of sequential connection, the first condenser, first throttle
Device, dehumidify evaporimeter in first；First heat pump unit further includes having the first outdoor heat exchanger, first outdoor heat exchange
One end of device passes through the first pipeline connection to the second pipeline between dehumidify evaporimeter in described first and first compressor
On, the other end passes through the 4th pipe between dehumidify evaporimeter in third pipeline connection to the first throttling device and described first
On the road；
The first valve is provided on the third pipeline, the tie point of the third pipeline and the 4th pipeline arrives institute
State the second valve after being arranged on the 4th pipeline in first between dehumidify evaporimeter.
Preferably, further including having control device, the control device connects first valve, the second valve, for controlling
Make the opening and closing of first valve, the second valve.
Preferably, second heat pump unit includes the second compressor, the second condenser, the second throttling of sequential connection
Device, dehumidify evaporimeter in second are connected with a four-way valve on the output end of second compressor, and second compressor is logical
The first valve port crossed on the four-way valve is connect with second condenser；
Second heat pump unit further includes having the second outdoor heat exchanger, and one end of second outdoor heat exchanger is communicated to
On second valve port of the four-way valve, the other end is filled by the 5th pipeline connection to second condenser and second throttling
On the 6th pipeline between setting；
The first check valve is additionally provided on 6th pipeline, the conducting direction of first check valve is by described second
Condenser is directed toward the second throttling device；
Second one-way valve is additionally provided on 5th pipeline, the conducting direction of the second one-way valve is by described second
Outdoor heat exchanger is directed toward the second throttling device.
Preferably, dehumidify evaporimeter is greater than dehumidify evaporimeter in described second in described first, first condenser is big
In second condenser, first outdoor heat exchanger is greater than second outdoor heat exchanger.
Preferably, including two sets of first heat pump units and a set of second heat pump unit.
The utility model additionally provides a kind of drying unit, recycles the air duct being connected to including baking room, with the baking room,
The dehumidifying drying unit as described above that efficient dehumidification combination module is pre-chilled using air inlet is provided in the air duct；
In the baking room a part of humid air sequence pass through the first heat exchanger channels of cross-flow heat exchanger, it is multiple it is described in remove
Dry air is obtained after wet evaporator, the second heat exchanger channels of cross-flow heat exchanger；Another part humid air exchanges heat with by the cross-flow
Multiple condensers are passed through after the dry air mixing of device discharge.
The utility model due to using the technology described above, is allowed to compared with prior art, have the following advantages that and accumulate
Pole effect:
1, it improves accounting of the damp and hot load in evaporator overall refrigerating effect, improve moisture removal
A kind of dehumidifying drying unit that efficient dehumidification combination module is pre-chilled using air inlet of the utility model, in refrigerating evaporator
A cross-flow heat exchanger is arranged in air inlet, constitutes cross-flow heat exchanger, multiple interior dehumidify evaporimeters, circulation canal and the first blower
One " air inlet pre-cooling module ", under the suction of the first blower, pass through plate heat exchanger using the low temperature outlet air of interior dehumidify evaporimeter
" cold fluid pass " (i.e. the second heat exchanger channels) in " zone of heat liberation " (i.e. the first heat exchanger channels) of plate heat exchanger
High temperature air inlet implements " pre-cooling ", reduces eventually entering into that the temperature of interior dehumidify evaporimeter air, dehumidify evaporimeter is entered the wind in raising
Relative humidity, to reduce accounting of the evaporator sensible heat load in overall refrigerating effect, improve damp and hot load in overall refrigerating effect
Accounting improves moisture removal；
2, meterial saving and high efficiency
The dehumidifying drying unit provided by the utility model that efficient dehumidification combination module is pre-chilled using air inlet, multiple interior dehumidifying
Evaporator shares a cross-flow heat exchanger, and the realization of a cross-flow heat exchanger is respectively equipped with relative to each interior dehumidification heat exchange
Mode reduces the quantity and volume of cross-flow heat exchanger, reduces costs；Also, in moisture content containing wet stock and evaporability
In the drying later period all declined to a great extent, drying unit return air temperature increases, relative humidity reduces, at this time the pre-cooling of the utility model air inlet
The operation quantity of evaporator in composite module is reduced, processing air quantity reduces, but the heat exchange area of cross-flow heat exchanger do not reduce,
" area air quantity ratio " improves, the effect of air inlet pre-cooling further increases；
3, compressor exhaust temperature is effectively managed, prevents from increasing exceeded
The dehumidifying drying unit provided by the utility model that efficient dehumidification combination module is pre-chilled using air inlet, is carried out more
The principles of structural design of unit heat pump unit " low compression ratio ", the condenser of more unit heat pumps is in drying unit main air duct
It is arranged along airflow direction sequence, cross-flow heat exchanger of the dehumidify evaporimeter in air inlet pre-cooling module in the correspondence of more unit heat pumps
Passage of heat exit it is anti-airflow direction sequence arrange, realize " the high condenser of condensation temperature and the high evaporation of evaporating temperature
The condenser that device is combined in the same unit heat pump module, condensation temperature the is low evaporator low with evaporating temperature is combined in
The target of compressor exhaust temperature is reduced to reduce compression ratio in the same unit heat pump module "；
Since refrigerant saturation temperature and saturation pressure have one-to-one relationship, condensation temperature higher position is condensing pressure
Height, evaporating temperature higher position are evaporating pressure height, and high condensing pressure and high evaporating pressure are combined in the same unit heat pump module
In, compression ratio (condensing pressure/evaporating pressure) is relatively low；Low condensation temperature is exactly that condensing pressure is low, and evaporating temperature is low to be exactly
Evaporating pressure is low, and low condensing pressure and low evaporating pressure are combined in the same unit heat pump module, compression ratio (condensation pressure
Power/evaporating pressure) it is relatively low；So combination, it is therefore prevented that high condensing pressure condenser and low evaporating pressure evaporator are by group
It closes in the same unit heat pump module, also it is prevented that high compression ratio, so that compressor exhaust temperature be prevented to increase
It is exceeded.
Detailed description of the invention
The above-mentioned and other feature of the utility model can be more clearly understood that by detailed description below in conjunction with attached drawing
And advantage, in which:
Fig. 1 is the structural schematic diagram of the heat pump drying device of air-flow closed cycle in the prior art；
Fig. 2 is the dehumidifying drying provided by the utility model that efficient dehumidification combination module is pre-chilled using air inlet in embodiment 1
The structural schematic diagram of unit；
Fig. 3 is the dehumidifying drying provided by the utility model that efficient dehumidification combination module is pre-chilled using air inlet in embodiment 2
The structural schematic diagram of unit；
Fig. 4 is the dehumidifying drying provided by the utility model that efficient dehumidification combination module is pre-chilled using air inlet in embodiment 3
The structural schematic diagram of unit.
Specific embodiment
Referring to the attached drawing for showing the utility model embodiment, the utility model is described in more detail.However, this reality
It can be realized in many different forms with novel, and should not be construed as being limited by the embodiment herein proposed.On the contrary, proposing
These embodiments be in order to reach sufficiently and complete disclosure, and make those skilled in the art understands completely this it is practical newly
The range of type.In these attached drawings, for clarity, the size and relative size in layer and region may be exaggerated.
Embodiment 1
Referring to Fig. 2, the utility model provides a kind of dehumidification drying machine that efficient dehumidification combination module is pre-chilled using air inlet
Group, includes at least two sets of heat pump units, and every set heat pump unit includes the closing system for constituting one for refrigerant circulation that is linked in sequence
The compressor of system, condenser, throttling set, interior dehumidify evaporimeter；It further include having cross-flow heat exchanger BH, cross-flow heat exchanger BH a tool
The first heat exchanger channels (i.e. zone of heat liberation) and the second heat exchanger channels (i.e. cold fluid pass) of wrong flow arrangement, the first heat exchange
It is connected between the air outlet in channel and the air inlet of the second heat exchanger channels by a circulation canal；The interior dehumidifying of more set heat pump units
Evaporator sequence arranged is in circulation canal and is located at the first heat exchanger channels air outlet, the air outlet of the second heat exchanger channels
Place is provided with the first blower F2, cross-flow heat exchanger BH, multiple interior dehumidify evaporimeters, circulation canal, the first blower F2 constitute one into
Composite module is pre-chilled in wind；The condenser of more set heat pump units is arranged sequentially the wind outlet of the first blower F2.
Multiple interior dehumidify evaporimeters, cross-flow heat exchanger BH, multiple condensers are respectively positioned in the air duct of humid air stream warp, operation
When, under the action of the first blower F2, humid air sequence flow through the first heat exchanger channels, multiple interior dehumidify evaporimeters, circulation canal,
Dry air is obtained after second heat exchanger channels, the first blower F2, multiple condensers.
In the present embodiment, which includes three sets of heat pump units, is by compressor (Y1), cold respectively
Condenser (L1), throttling set (V1), interior dehumidify evaporimeter (H1) composition first group, by compressor (Y2), condenser (L2), section
Flow device (V2), interior dehumidify evaporimeter (H2) composition second group, by compressor (Y3), condenser (L3), throttling set (V3),
The third group of interior dehumidify evaporimeter (H3) composition.
Certainly, the tricks of heat pump unit can be adjusted as the case may be in other embodiments, such as can be only had
Two groups, can also be three groups or more, herein with no restrictions.
In the present embodiment, cross-flow heat exchanger BH uses board-like cross-flow heat exchanger, by the laterally heat of multiple interlaced arrangements
Channel and vertical cold passage composition.
In the present embodiment, along airflow direction, putting in order for multiple interior dehumidify evaporimeters is corresponding multiple cold
The arrangement mode of condenser is opposite.Such as shown in Fig. 2, interior dehumidify evaporimeter is flowed through by the humid air sequence of cross-flow heat exchanger BH
H3, interior dehumidify evaporimeter H2, interior dehumidify evaporimeter H1, for H3, H2, H1, humid air is descending outflow；And by the first blower F2
The dry air sequence of output flows through condenser L1, condenser L2, condenser L3, and for L1, L2, L3, dry air is ascending order
Flow out
In the present embodiment, the end of multiple condensers is additionally provided with the second blower F1, for pushing air-flow to flow through air duct.
In the present embodiment, the first blower F2 preferably uses variable air rate outer-rotor centrifugal fan.
In the present embodiment, it is provided with drip tray below multiple interior dehumidify evaporimeters, is set below interior dehumidify evaporimeter
It is equipped with drip tray, the moisture being precipitated in interior dehumidify evaporimeter is flowed into drip tray, is collected discharge.
In the present embodiment, which further includes having control device, for controlling the work of each heat pump unit respectively
Make state, to meet various working condition needs.
In actual drying operation, a kind of dehumidifying that efficient dehumidification combination module is pre-chilled using air inlet of the utility model is dried
Dry unit implements the principle of drying course air inlet pre-cooling module " processing air quantity requires to adjust according to stoving process ", for most
The processing air quantity of number drying object, air inlet pre-cooling module can be operated stage by stage as follows:
1. drying early stage runs more simultaneously in drying early stage, the unit heat pumps that cover, corresponding whole evaporator is in refrigeration
State, air inlet pre-cooling module blower run at high speed, and processing air quantity is big, and plate heat exchanger is in the shape of " area air quantity ratio " very little
State, the effect for entering the wind pre-cooling is poor, but sufficiently meet drying early stage moisture containing wet stock is high, evaporation capacity greatly, drying unit
Return air sensible heat accounting very little, the air inlet pre-cooling requirement that resume module air quantity is big, moisture removal is big；
2. drying mid-term is in refrigerating state in drying mid-term, unit operation of heat pump, corresponding partial vaporiser, into
The operating of module blower middling speed is pre-chilled in wind, and processing air quantity is medium, and plate heat exchanger is in " area air quantity ratio " medium state, air inlet
The effect of pre-cooling is preferable, and satisfaction drying mid-term moisture containing wet stock is higher, evaporation capacity is larger, drying unit return air sensible heat accounting mentions
It is high, air inlet pre-cooling resume module air quantity is larger, the biggish requirement of moisture removal；
3. the drying later period, phase, a small amount of unit operation of heat pump, corresponding a small amount of evaporator were in refrigerating state after the drying,
Air inlet pre-cooling module blower low-speed running, processing air quantity is small, and air inlet pre-cooling module plate heat exchanger is in " area air quantity ratio " very
The effect of high state, evaporator air inlet pre-cooling is best, and satisfaction drying later period moisture containing wet stock is low, evaporation capacity is small, drying dress
Put back into that wind sensible heat accounting is very big, air inlet pre-cooling resume module air quantity is smaller, the lesser requirement of moisture removal；
The key problem in technology problem of air-flow closed cycle heat pump drying device is to make there be not heat type (sensible heat, latent heat)
There is the evaporator with heat pump of differentiation and selective power, absorbs the condensation heat of water vapor in air as much as possible, inhale as few as possible
Receive the sensible heat of air；The water vapour continually escaped from containing wet stock is destroyed continuously high-intensitively, drying space
Water vapour in air is reduced to water, reduces the relative humidity of drying space air, is only air-flow closed cycle heat pump drying
Key problem in technology is only " absolute principle " of air-flow closed cycle heat pump drying！
The energy and loss in efficiency of drying course, occur mainly in the later period of drying: containing wet stock, the phase contains after the drying
Water rate has already decreased to very low level, after moisture is primarily present in the deep-level location containing wet stock, such as tobacco leaf drying process
Moisture in the cigarette muscle of phase, the waist of trousers in clothes drying later period, pocket, the moisture in collar, it is slow that these moisture diffuse to the surface speed,
Evaporation capacity very little, drying rate is slow, and energy consumption is big, becomes " last one kilometer " problem of drying；
A kind of dehumidifying drying unit that efficient dehumidification combination module is pre-chilled using air inlet of the utility model, carries out drying
The principle of process air inlet pre-cooling module " processing air quantity requires to adjust according to stoving process " carries out stage by stage air inlet pre-cooling module
Operation gradually reduces the air quantity of air inlet pre-cooling module, " the area air quantity ratio " of the module is stepped up, after increasing substantially drying
The dehumidifying Energy Efficiency Ratio of phase solves the problems, such as drying " last one kilometer ".
It is provided by the utility model a kind of using the beneficial of the dehumidifying drying unit for entering the wind the efficient dehumidification combination module of pre-cooling
Place:
1. each unit heat pump module compressor pressure ratios are in reduced levels, heat pump system safety is good
Compressor exhaust temperature has great influence to motor insulation performance and oil ageing cracking, it is necessary to which control exists
Within 120 DEG C；And compressor exhaust temperature is determined by following formula
In formula, t1t2sIt is compressor suction and discharge temperature, p respectivelyk、p0It is Suck and exhaust pressure respectively, γ is the compression of refrigerant
The factor；From the above equation, we can see that compressor exhaust temperature is by compression ratio pk/p0It is codetermined with suction temperature, compression ratio height exhaust temperature
Degree is just high, and vice versa.
Since the utility model executes multiple-unit heat pump unit " low compression ratio " principles of structural design, high condensing pressure and height
Evaporating pressure is combined in the same unit heat pump module, and compression ratio is relatively low；Low condensing pressure and low evaporating pressure,
It is combined in the same unit heat pump module, compression ratio is also relatively low；So combination, it is therefore prevented that high condensing pressure with it is low
Evaporating pressure is incorporated into the same unit heat pump module, also it is prevented that high compression ratio, so that it is high to prevent compressor to occur
Delivery temperature, heat pump system safety are good.
2. there is brilliant remove in the case where whole process, especially the high temperature low humidity conditions in drying latter stage are dried in air-flow closed cycle
Wet effect
The utility model is using air inlet pre-cooling composite module, and evaporator group humidity load is high, effect on moisture extraction is good；
Due to having implemented, " drying course air inlet pre-cooling resume module air quantity requires to adjust the utility model according to stoving process
It is whole " principle, especially turn down processing air quantity by only running a small amount of unit heat pump in drying latter stage, improve air inlet pre-cooling mould
" the area air quantity ratio " of block plate heat exchanger, by the high temperature drying return air containing a small amount of water vapour of the later stage of drying, uses evaporator
Low temperature outlet air carries out " depth pre-cooling " by the plate heat exchanger of "high" area air quantity ratio, so that evaporator air inlet be greatly lowered
Temperature, increase substantially relative humidity, improve the humidity load accounting of evaporator, improve dehumidifying efficiency and drying efficiency, solve
Heat pump drying " last one kilometer " problem.
3. improving the plate heat exchanger of air inlet pre-cooling module and the utilization rate of blower
A kind of dehumidification drying machine using air inlet pre-cooling module of the utility model is when dehumidifying operation, no matter it is early to be in drying
Phase, drying mid-term still dry latter stage, no matter being in the evaporator quantity number of refrigerated dehumidification state, the heat exchange of plate heat exchanger
The all whole whole process of area come into operation, and air inlet pre-cooling module blower all whole process comes into operation, and air inlet precooling effect is good, plate-type heat-exchange
The utilization rate of device and blower is high；
In particular, in the drying later period that moisture content containing wet stock and evaporability all decline to a great extent, drying unit return air temperature
Degree raising, relative humidity reduce, and the operation quantity of the evaporator in the utility model air inlet pre-cooling composite module reduces, locates at this time
Managing air quantity reduces, but the heat exchange area of cross-flow heat exchanger is not reduced, " area air quantity ratio " improves, the effect of air inlet pre-cooling is into one
Step improves；
4. complete machine structure optimizes, it is uniform that condenser group enters the wind temperature and humidity
A kind of dehumidification drying machine using air inlet pre-cooling module of the utility model, the refrigerated dehumidification of more unit heat pumps is steamed
Hair device is merged into an air inlet pre-cooling module, and complete machine structure is optimized；
The utility model using the method for " the small treating capacity of big cycle volume ", that is, uses few circulating current in drying unit
Part return air is sufficiently mixed with most of drying unit return air later by " pre-cooling-dehumidifying-reheating " processing of air inlet pre-cooling module
It closes, then whole Wind Volume, by condenser group, heat temperature raising becomes high temperature dry air and inputs drying unit；In drying operation,
Small part low humidity return air by air inlet pre-cooling module " pre-cooling-dehumidifying-reheating " processing is discharged by centrifugal blower high speed, with baking
Most of high humility return air of equipment for drying collides, and two strands of air-flows are realized and sufficiently mixed, especially water vapor in air concentration
It realizes and is uniformly mixed, heated using condenser group, obtained " high temperature dry air of outlet air section temperature humidity homogenization ", it is right
In improving the uniformity for being oven-dried the final moisture content of material, prevents local material overdrying or drying insufficient, be of great significance.
The dehumidifying drying unit provided in this embodiment that efficient dehumidification combination module is pre-chilled using air inlet, is suitable for various bakings
Equipment for drying, for drying tobacco leaf, cereal etc., herein with no restrictions.
Embodiment 2
The present embodiment is the adjustment carried out on the basis of embodiment 2.
Specific reference Fig. 3, which includes two sets of heat pumps of the first heat pump unit and the second heat pump unit
Unit.
In the present embodiment, the first heat pump unit includes the first compressor Y1 of sequential connection, the first condenser L1,
One throttling set V1, dehumidify evaporimeter H1 in first；First heat pump unit further includes having the first outdoor heat exchanger X1, and first is outdoor
Heat exchanger X1 is as outdoor, and the side of the first outdoor heat exchanger X1 is provided with blower F3, for promoting outdoor air to flow through
One outdoor heat exchanger X1.
It is compressed by the first pipeline connection to dehumidify evaporimeter H1 in first and first one end of first outdoor heat exchanger X1
On the second pipeline between machine Y1, the other end passes through dehumidify evaporimeter in third pipeline connection to first throttling device V1 and first
On the 4th pipeline between H1；The first valve CVS1 is provided on third pipeline, third pipeline and the tie point of the 4th pipeline arrive
The second valve CVC1 is provided on the 4th pipeline in first between dehumidify evaporimeter H1.
In the present embodiment, the first valve CVS1, the second valve CVC1 use solenoid valve；Further, the multiple terminals system
Cooling system includes control device, and control device connects the first valve CVS1, the second valve CVC1, thus the first valve of control
The opening or closure of CVS1, the second valve CVC1.
First heat pump unit operational process is specific as follows:
1, heating in interior dehumidifying
Heating function in interior dehumidifying, for reducing the humidity of air in drying unit and the temperature of raising drying unit air
Degree.
Specifically, control device controls the first valve CVS1 closure, the second valve CVC1 is opened, the first compressor Y1, the
One condenser L1, first throttling device V1, the second valve CVC1, dehumidify evaporimeter H1, the first compressor Y1 sequence connect in first
It is logical to constitute a circulation to circulate for refrigerant；At the same time, since the first valve CVS1 closure is in closed state, the
One end that one outdoor heat exchanger X1 is connect with the second valve CVS1 is in closed state, and the other end is then sucked with the first compressor Y1
Mouth connection；
High temperature refrigerant is discharged from the first compressor Y1 exhaust outlet, into the first condenser L1, the air-flow stream of drying unit
Heat is absorbed through condenser, temperature increases；Refrigerant is again after first throttling device V1 decompression, by the second valve CVC1, into
Enter dehumidify evaporimeter H1 in interior dehumidifying first, air-flow flows through dehumidify evaporimeter H1 in first, by cool-down dehumidification, filters out water vapour；
Refrigerant finally flows back to the first compressor Y1 air entry, using being discharged again from the first compressor Y1 exhaust outlet after compression, enters
New round circulation；
The refrigeration system of machine two that a kind of refrigerant provided in this embodiment securely and reliably flows back, is changed using the first outdoor
Hot device X1 (not running terminal device) executes " end interface is closed, another end interface is connected with compressor suction port ", to make
Always the low-pressure state almost the same with compressor air suction mouth is in inside first outdoor heat exchanger X1；First outdoor heat exchanger X1
Interior deposited refrigerating fluid and refrigeration oil hanker evaporation of continuously absorbing heat in the leakage of its external environment, into being in the of operating status
In one in dehumidify evaporimeter H1, the first condenser L1 and pipeline, the first interior dehumidifying of compressor, operating status is ensured that
The abundance of evaporator H1, the first condenser L1 and pipeline inner refrigerant and refrigeration oil is stablized.
2, heating in outer heat absorption
Heating function in outer heat absorption, for increasing the temperature of air in drying unit.
Specifically, control device control the first valve CVS1 open, the second valve CVC1 closure, the first compressor Y1, the
One condenser L1, first throttling device V1, the first valve CVS1, the first outdoor heat exchanger X1, the first compressor Y1 sequential communication
Constitute a circulation to circulate for refrigerant；At the same time, since the second valve CVC1 is in closed state, dehumidifying is steamed in first
One end that hair device H1 is connect with the second valve CVC1 is in closed state, and the other end is connected to the first compressor Y1 suction inlet；
High temperature refrigerant is discharged from 7 exhaust outlet of compressor, and into the first condenser L1, the air-flow of drying unit flows through condensation
Device absorbs heat, and temperature increases；Refrigerant after first throttling device V1 decompression, passes through first valve CVS1 (the second valve again
CVC1 is closed), into the first outdoor heat exchanger X1 (being at this time evaporator), heat is absorbed from ambient outdoor air, is finally flowed
The first compressor Y1 air entry is returned, then is discharged after second compression from the first compressor Y1 exhaust outlet, is recycled into a new round；
Dehumidify evaporimeter H1 (not running terminal device) executes " end interface closing, the other end in first under this state
Interface is connected with compressor suction port ", to make to be in and compressor air suction mouth base always inside dehumidify evaporimeter H1 in first
This consistent low-pressure state；The refrigerating fluid and refrigeration oil deposited in dehumidify evaporimeter H1 in first, connect in its outer gas stream
Continuous heat absorption evaporation, into the first outdoor heat exchanger X1, the first condenser L1 and pipeline for being in operating status, so that it is guaranteed that
The abundance of compressor, the first outdoor heat exchanger X1 of operating status, the first condenser L1 and pipeline inner refrigerant and refrigeration oil
Stablize.
In the present embodiment, the second heat pump unit includes the second compressor Y2 of sequential connection, the second condenser L2,
Two throttling set V2, dehumidify evaporimeter H2 in second, are connected with a four-way valve ST1 on the output end of the second compressor Y2, and second
Compressor Y2 is connect by the first valve port on four-way valve ST1 with the second condenser L2；Second heat pump unit further includes having second
Outdoor heat exchanger X2, one end of the second outdoor heat exchanger X2 are communicated on the second valve port of four-way valve, and the other end passes through the 5th pipe
Road is communicated on the 6th pipeline between the second condenser L2 and second throttling device V2；Second outdoor heat exchanger X2 is as room
Outside, and the side of the second outdoor heat exchanger X2 is provided with blower F4, for promoting outdoor air to flow through second Room external heat exchanger
X2。
In the present embodiment, the first check valve D1 is additionally provided on the 6th pipeline, the conducting direction of the first check valve DI is
Second throttling device V2 is directed toward by the second condenser L2；Second one-way valve D2, second one-way valve D2 are additionally provided on 5th pipeline
Conducting direction be by the second outdoor heat exchanger H2 be directed toward second throttling device V2.
In the present embodiment, dehumidify evaporimeter is greater than dehumidify evaporimeter in described second, first condenser in first
Greater than second condenser, first outdoor heat exchanger is greater than second outdoor heat exchanger, big to meet drying unit
The actual needs of heating amount and big moisture removal.
Control device is also used to control the on state of each valve port on four-way valve ST1:
Second heat pump unit operational process is specific as follows:
1, heating in interior dehumidifying
Heating function in interior dehumidifying, for reducing the humidity of air in drying unit and the temperature of raising drying unit air
Degree.
Specifically, the closing of the opening, the second valve port of control device control upper first valve port of four-way valve ST1, the second compression
Machine Y2, the second condenser L2, the first check valve D1, second throttling device V1, dehumidify evaporimeter H2, the second compressor Y2 in second
Sequential communication constitutes a circulation to circulate for refrigerant；At the same time, due to the setting of second one-way valve D2, outside second Room
Heat exchanger X2 is connected to second one end compressor Y2, one end is closed；
High temperature refrigerant is discharged from the second compressor Y2 exhaust outlet, into the second condenser L2, the air-flow stream of drying unit
Heat is absorbed through condenser, temperature increases；Refrigerant again through second throttling device V2 decompression after, into second in dehumidify evaporimeter
H2, air-flow flow through dehumidify evaporimeter H2 in second, by cool-down dehumidification, filter out water vapour；Refrigerant finally flows back to the second compressor
Y2 air entry is recycled using being discharged again from the second compressor Y2 exhaust outlet after compression into a new round；
The refrigeration system of machine two that a kind of refrigerant provided in this embodiment securely and reliably flows back, is changed using the first outdoor
Hot device X1 (not running terminal device) executes " end interface is closed, another end interface is connected with compressor suction port ", to make
Always the low-pressure state almost the same with compressor air suction mouth is in inside first outdoor heat exchanger X1；First outdoor heat exchanger X1
Interior deposited refrigerating fluid and refrigeration oil hanker evaporation of continuously absorbing heat in the leakage of its external environment, into being in the of operating status
In two in dehumidify evaporimeter H2, the second condenser L2 and pipeline, the second interior dehumidifying of compressor, operating status is ensured that
The abundance of evaporator H2, the second condenser L2 and pipeline inner refrigerant and refrigeration oil is stablized.
2, interior heat absorption outlet heat
Interior heat absorption outlet heat function fills drying for being precisely controlled the temperature and relative humidity of air in drying unit
It sets interior extra heat to drain into outside drying unit, to agree with flavescence, the fixation stage of specific stoving process requirement such as flue-cured tobacco
Requirement.
Specifically, the upper first valve port closure of control device control four-way valve ST1, the second valve port are opened, the second compressor Y2,
Second outdoor heat exchanger X2, second one-way valve D2, second throttling device V2, the second compressor of dehumidify evaporimeter H2 Y2 is suitable in second
Sequence connection constitutes a circulation to circulate for refrigerant；
High temperature refrigerant is discharged from compressor Y2 top vent, and into the second outdoor heat exchanger X2, outdoor airflow is flowed through
Second outdoor heat exchanger X2 absorbs heat, and temperature increases；Refrigerant is depressured through second one-way valve D2, second throttling device V2 again
Afterwards, into dehumidify evaporimeter H2 in second, to drying unit return air cool-down dehumidification, heat is absorbed, finally flows back to the second compressor
Y2 air entry, then be discharged after second compression from the second compressor Y2 exhaust outlet, it is recycled into a new round；
Under this state the second condenser L2 (not running terminal device) execute " end interface close, another end interface with
Compressor suction port conducting ", to make inside the second condenser always in the low pressure shape almost the same with compressor air suction mouth
State；The refrigerating fluid and refrigeration oil deposited in second condenser L2, continuously heat absorption evaporation, is transported into being in its outer gas stream
In the second outdoor heat exchanger X2, the second evaporator H2 and pipeline of row state, ensure that compressor, operating status second
The abundance of outdoor heat exchanger X2, the second evaporator H2 and pipeline inner refrigerant and refrigeration oil is stablized.
The dehumidifying drying unit provided in this embodiment that efficient dehumidification combination module is pre-chilled using air inlet, serves Roaster
Skill tobacco flue-curing the most complicated, using 2 sets of " one drag two " refrigeration systems, core is dehumidified in 2 of 2 sets of unit heat pump units
Evaporator combinations are pre-chilled in module in the same air inlet:
1. the one drag two refrigeration system of a set of high-power compressor dragging, 1 condenser, 2 evaporators, condenser setting
In main body air duct, 2 evaporators are separately positioned in air inlet pre-cooling module and in surrounding air, and operation of staggering the time: interior dehumidifying is steamed
Device setting is sent out to be pre-chilled in module in air inlet, circulating current absorbs heat out of drying unit, realize when operation in heating in dehumidifying；Setting
Another evaporator in surrounding air realizes heating in outer heat absorption when operation, promotes temperature in barn；
2. the one drag two refrigeration system of a set of baby compressor dragging, 1 evaporator, 2 condensers, interior dehumidifying evaporation
Device setting is pre-chilled in module in air inlet, and 2 condensers are separately positioned in main ventilation road in surrounding air, operation of staggering the time: sets
Set the condenser in main ventilation road, when operation realize in heating in dehumidifying；Condenser in surrounding air is set, when operation
Heat absorption outlet heat, is discharged into environment for waste heat in barn in realizing；
The operational process of the present embodiment is as follows:
In tobacco flue-curing early stage, barn temperature is near 40 DEG C, and main task is that tobacco leaf turns yellow, and dehumidifying task is lighter；By
Even occur that heat is more than needed to be needed partial heat outlet in the autothermal reaction of tobacco leaf, in barn, at this time main operation small-power
The heat pump system of compressor dragging, the blower low speed operation of module, " the area air quantity ratio " that plate changes is high, air inlet pre-cooling efficiently dehumidifying
Effect is good, to tobacco curing barn moderately dehumidifying heating, and waste heat is discharged into ambient air；
In tobacco flue-curing mid-term, for barn temperature near 50 DEG C, main task is the fixation after tobacco leaf turns yellow, and dehumidifying is appointed
It is engaged in very heavy；Mainly the heat pump system of operation high-power compressor dragging, the blower middling speed operation of air inlet pre-cooling module, plate change at this time
" area air quantity ratio " it is lower, it is preferable that air inlet is pre-chilled efficient effect on moisture extraction, dehumidifies and heats up to tobacco curing barn；Dehumidify energy in barn
When heat is excessive in power deficiency and barn, the heat pump system of baby compressor dragging also puts into operation, air inlet pre-cooling module
Blower high-speed cruising, " the area air quantity ratio " that plate changes decrease, but due to the big return air humidity height of tobacco leaf hydrofuge amount cause into
Wind is pre-chilled efficient effect on moisture extraction and increases, and increases dehumidifying heating ability to tobacco curing barn, and by waste heat outlet ambient air；
In the tobacco flue-curing later period, for barn temperature at 60 DEG C or more, main task is the dry muscle after tobacco leaf fixation, and dehumidifying is appointed
Business reduces, and increases since barn internal-external temperature difference increases the hot steady temperature and pressure power that causes to heat up that increases of leakage；High-power pressure is mainly run at this time
The heat pump system of contracting machine dragging extracts heat from surrounding air to make up barn leakage heat, maintain barn high-temperature position；Small-power compression
The heat pump system of machine dragging also puts into operation, and the blower low speed operation of air inlet pre-cooling module, " the area air quantity ratio " that plate changes is high, into
The efficient effect on moisture extraction of wind pre-cooling is good, is effectively dehumidified to tobacco curing barn and increases heating ability；Drying muscle stage moisture content in leaves
Lower, evaporability is weaker, and the dehumidifying effect of the heat pump system evaporator of baby compressor dragging is enough to take on；
The usefulness of the dehumidifying drying unit provided in this embodiment that efficient dehumidification combination module is pre-chilled using air inlet:
1. each unit heat pump module compressor pressure ratios are in reduced levels, heat pump system safety is good
Since the utility model executes multiple-unit heat pump unit " low compression ratio " principles of structural design, high condensing pressure condensation
Device and high evaporating pressure evaporator, are combined in the same unit heat pump module, compression ratio is relatively low；Low condensing pressure is cold
Condenser and low evaporating pressure evaporator, are combined in the same unit heat pump module, compression ratio is also relatively low；Such group
It closing, it is therefore prevented that high condensing pressure and low evaporating pressure are incorporated into the same unit heat pump module, also it is prevented that high compression ratio,
To prevent compressor high exhaust temperature occur, heat pump system safety is good.
2. there is brilliant remove in the case where whole process, especially the high temperature low humidity conditions in drying latter stage are dried in air-flow closed cycle
Wet effect
The utility model is using air inlet pre-cooling composite module, and evaporator group humidity load is high, effect on moisture extraction is good；
Due to having implemented, " drying course air inlet pre-cooling resume module air quantity requires to adjust the utility model according to stoving process
It is whole " principle, especially turn down processing air quantity by only running a small amount of unit heat pump in drying latter stage, improve air inlet pre-cooling mould
" the area air quantity ratio " of block plate heat exchanger, by the high temperature drying return air containing a small amount of water vapour of the later stage of drying, uses evaporator
Low temperature outlet air carries out " depth pre-cooling " by the plate heat exchanger of "high" area air quantity ratio, so that evaporator air inlet be greatly lowered
Temperature, increase substantially relative humidity, improve the humidity load accounting of evaporator, improve dehumidifying efficiency and drying efficiency, solve
Heat pump drying " last one kilometer " problem.
3. improving the plate heat exchanger of air inlet pre-cooling module and the utilization rate of blower
A kind of dehumidification drying machine using air inlet pre-cooling module of the utility model is when dehumidifying operation, no matter it is early to be in drying
Phase, drying mid-term still dry latter stage, no matter being in the evaporator quantity number of refrigerated dehumidification state, the heat exchange of plate heat exchanger
The all whole whole process of area come into operation, and air inlet pre-cooling module blower all whole process comes into operation, and air inlet precooling effect is good, plate-type heat-exchange
The utilization rate of device and blower is high；
4. complete machine structure optimizes, it is uniform that condenser group enters the wind temperature and humidity
A kind of dehumidification drying machine using air inlet pre-cooling module of the utility model, the refrigerated dehumidification of more unit heat pumps is steamed
Hair device is merged into an air inlet pre-cooling module, and complete machine structure is optimized；
Method of the utility model to the circulating current in drying unit using " the small treating capacity of big cycle volume ", i.e., using few
Part return air is sufficiently mixed with most of drying unit return air later by " pre-cooling-dehumidifying-reheating " processing of air inlet pre-cooling module
It closes, then whole Wind Volume, by condenser group, heat temperature raising becomes high temperature dry air and inputs drying unit；In drying operation,
Small part low humidity return air by air inlet pre-cooling module " pre-cooling dehumidifying reheating " processing is discharged by centrifugal blower high speed, with drying
Most of high humility return air of device collides, and two strands of air-flows realize and sufficiently mix that especially water vapor in air concentration is real
It is now uniformly mixed, is heated using condenser group, obtain " high temperature dry air of outlet air section temperature humidity homogenization ", for
Improve the uniformity for being oven-dried the final moisture content of material, prevents local material overdrying or drying insufficient, be of great significance.
Embodiment 3
The present embodiment is the adjustment carried out on the basis of embodiment 2.
It is specific that referring to Fig. 4, the dehumidifying drying unit includes two set of first heat pump unit and a set of second heat pump unit,
First heat pump unit, the specific constructive form of the second heat pump unit are referring to the description in embodiment 2, and details are not described herein again.
The dehumidifying drying unit provided in this embodiment that efficient dehumidification combination module is pre-chilled using air inlet, serves tobacco leaf etc.
Agricultural product drying, using 3 sets of " one drag two " refrigeration systems, core is that 3 interior dehumidify evaporimeter combinations are pre-chilled in the same air inlet
In module:
1. the 2 sets of one drag two refrigeration systems for dehumidifying and heating for baking room
Every suit system is all 1 condenser, 2 evaporators, and condenser is all disposed in main body air duct, and 2 groups of evaporators are wrong
Shi Yunhang: being arranged in the interior dehumidify evaporimeter in air inlet pre-cooling module, realize when operation in heating in dehumidifying；Setting is in environment sky
Another group of evaporator in gas realizes heating in outer heat absorption when operation, promotes temperature in barn；
2. 1 set of one drag two refrigeration system for baking room dehumidifying heating and outer heat extraction
Mould is pre-chilled in air inlet in this set of one drag two refrigeration system, 1 evaporator, 2 condensers, interior dehumidify evaporimeter setting
In block, 2 condensers are separately positioned in main ventilation road in surrounding air, operation of staggering the time: are arranged in cold in main ventilation road
Condenser, realize when operation in heating in dehumidifying；Condenser in surrounding air is set, when operation realize in heat absorption outlet heat,
Waste heat in barn is discharged into environment；
The present embodiment is the Optimal improvements of embodiment 2: 2 sets for heating in heating in absorbing heat outside baking room and interior dehumidifying
One drag two refrigeration system, can run simultaneously can also compare embodiment 2, since single-machine capacity is smaller, this implementation with isolated operation
Example is more flexible to the adjusting of the temperature humidity in drying unit and smooth, can eliminate the wide cut wave of temperature and humidity in baking room
It is dynamic；
Those skilled in the art should be understood that the utility model can be realized with many other concrete forms without de-
Spirit or scope from itself.Although the case study on implementation of the utility model has been described, it should be understood that the utility model should not limit
Be made as these embodiments, those skilled in the art can as defined by the following claims the spirit of the utility model and
Within the scope of make change and modification.
Claims (11)
1. a kind of dehumidifying drying unit that efficient dehumidification combination module is pre-chilled using air inlet, which is characterized in that include at least two
Heat pump unit is covered, the heat pump unit includes the be linked in sequence compressor constituted one for the closed system of refrigerant circulation, condensation
Device, throttling set, interior dehumidify evaporimeter；
It further include having a cross-flow heat exchanger, the cross-flow heat exchanger has the first heat exchanger channels being alternately arranged and the second heat exchange logical
Road is connected between the air outlet of first heat exchanger channels and the air inlet of second heat exchanger channels by a circulation canal；
The interior dehumidify evaporimeter sequence arranged of more set heat pump units in the circulation canal and is located at first heat exchanger channels
At air outlet, the first blower is provided at the air outlet of second heat exchanger channels；The condenser sequence of more set heat pump units is arranged
It is listed in the wind outlet of first blower；
Air-flow closed cycle is dried, multiple interior dehumidify evaporimeters, cross-flow heat exchanger, multiple condensers are respectively positioned on drying
In the air duct that device humid air return air flows through, partial HAT sequence flows through the first heat exchanger channels, multiple interior dehumidify evaporimeters, follows
It ring channel, the second heat exchanger channels, the first blower and then mixes with other partial HAT, then is obtained by multiple condensers
Obtain dry air.
2. the dehumidifying drying unit according to claim 1 that efficient dehumidification combination module is pre-chilled using air inlet, feature are existed
In it is pre- that the cross-flow heat exchanger, multiple interior dehumidify evaporimeters, the circulation canal, first blower constitute an air inlet
Cold composite module.
3. the dehumidifying drying unit according to claim 1 that efficient dehumidification combination module is pre-chilled using air inlet, feature are existed
In along airflow direction, the arrangement mode of the corresponding multiple condensers that put in order of multiple interior dehumidify evaporimeters is opposite.
4. the dehumidifying drying unit according to claim 1 that efficient dehumidification combination module is pre-chilled using air inlet, feature are existed
In first blower uses variable air rate outer-rotor centrifugal fan.
5. the dehumidifying drying unit according to claim 1 that efficient dehumidification combination module is pre-chilled using air inlet, feature are existed
In including two sets of heat pump units of the first heat pump unit and the second heat pump unit.
6. the dehumidifying drying unit according to claim 5 that efficient dehumidification combination module is pre-chilled using air inlet, feature are existed
In, first heat pump unit include the first compressor of sequential connection, the first condenser, first throttling device, in first
Dehumidify evaporimeter；First heat pump unit further includes having the first outdoor heat exchanger, and one end of first outdoor heat exchanger is logical
It crosses on the first pipeline connection to the second pipeline between dehumidify evaporimeter in described first and first compressor, the other end is logical
It crosses on the 4th pipeline in third pipeline connection to the first throttling device and described first between dehumidify evaporimeter；
It is provided with the first valve on the third pipeline, the tie point of the third pipeline and the 4th pipeline, to described the
Second valve after being arranged on the 4th pipeline in one between dehumidify evaporimeter.
7. the dehumidifying drying unit according to claim 6 that efficient dehumidification combination module is pre-chilled using air inlet, feature are existed
In further including having control device, the control device connects first valve, the second valve, for controlling first valve
The opening and closing of door, the second valve.
8. the dehumidifying drying unit according to claim 6 that efficient dehumidification combination module is pre-chilled using air inlet, feature are existed
In, second heat pump unit include the second compressor of sequential connection, the second condenser, second throttling device, in second
Dehumidify evaporimeter, a four-way valve is connected on the output end of second compressor, and second compressor passes through the four-way
The first valve port on valve is connect with second condenser；
Second heat pump unit further includes having the second outdoor heat exchanger, and one end of second outdoor heat exchanger is communicated to described
On second valve port of four-way valve, the other end by the 5th pipeline connection to second condenser and the second throttling device it
Between the 6th pipeline on；
The first check valve is additionally provided on 6th pipeline, the conducting direction of first check valve is to be condensed by described second
Device is directed toward the second throttling device；
Be additionally provided with second one-way valve on 5th pipeline, the conducting direction of the second one-way valve be by the second Room outside
Heat exchanger is directed toward the second throttling device.
9. the dehumidifying drying unit according to claim 8 that efficient dehumidification combination module is pre-chilled using air inlet, feature are existed
In dehumidify evaporimeter is greater than dehumidify evaporimeter in described second in described first, and it is cold that first condenser is greater than described second
Condenser, first outdoor heat exchanger are greater than second outdoor heat exchanger.
10. the dehumidifying drying unit according to claim 8 that efficient dehumidification combination module is pre-chilled using air inlet, feature are existed
In including two sets of first heat pump units and a set of second heat pump unit.
11. a kind of drying unit, which is characterized in that recycle the air duct being connected to, the air duct including baking room, with the baking room
Inside it is provided with the dehumidification drying machine that efficient dehumidification combination module is pre-chilled described in any one of claim 1-10 using air inlet
Group；
A part of humid air sequence of the baking room passes through the first heat exchanger channels of cross-flow heat exchanger, multiple interior dehumidifying evaporations
Dry air is obtained after device, the second heat exchanger channels of cross-flow heat exchanger；Another part humid air is discharged with by the cross-flow heat exchanger
Dry air mixing after pass through multiple condensers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2018215553218 | 2018-09-21 | ||
| CN2018111121031 | 2018-09-21 | ||
| CN201821555321 | 2018-09-21 | ||
| CN201811112103 | 2018-09-21 |
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| CN209689295U true CN209689295U (en) | 2019-11-26 |
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| CN201811304027.4A Pending CN109442891A (en) | 2018-09-21 | 2018-11-02 | A kind of dehumidifying drying unit and drying unit that efficient dehumidification combination module being pre-chilled using air inlet |
| CN201821803588.4U Active CN209689295U (en) | 2018-09-21 | 2018-11-02 | A kind of dehumidifying drying unit and drying unit that efficient dehumidification combination module being pre-chilled using air inlet |
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| CN201811304027.4A Pending CN109442891A (en) | 2018-09-21 | 2018-11-02 | A kind of dehumidifying drying unit and drying unit that efficient dehumidification combination module being pre-chilled using air inlet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109442891A (en) * | 2018-09-21 | 2019-03-08 | 上海伯涵热能科技有限公司 | A kind of dehumidifying drying unit and drying unit that efficient dehumidification combination module being pre-chilled using air inlet |
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| CN109945631A (en) * | 2019-03-13 | 2019-06-28 | 珠海格力电器股份有限公司 | Heat pump drying system and control method |
| CN109827421B (en) * | 2019-03-18 | 2023-11-24 | 青岛创客机械设备制造有限公司 | Superhigh temperature industry heat pump drying device |
| CN109855401A (en) * | 2019-03-25 | 2019-06-07 | 东莞市科信新能源设备有限公司 | A kind of high-performance air-source all-in-one machine with drying and dehumidifying functions and system |
| CN110207413A (en) * | 2019-06-25 | 2019-09-06 | 珠海格力电器股份有限公司 | Refrigerating system with drying function, drying device and operation control method |
| CN111219955A (en) * | 2019-12-13 | 2020-06-02 | 上海伯涵热能科技有限公司 | Outer-discharging-type double-effect drying heat pump unit |
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| CN111329097A (en) * | 2020-04-07 | 2020-06-26 | 广东海悟科技有限公司 | Tobacco leaf drying device and control method thereof |
| CN111503976B (en) * | 2020-04-14 | 2021-08-10 | 江苏科技大学 | Dehumidification drying equipment and working method thereof |
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| CN113418324A (en) * | 2021-05-20 | 2021-09-21 | 青岛海尔空调电子有限公司 | Air source heat pump drying system and control method and control device thereof |
| CN113739556B (en) * | 2021-07-21 | 2023-01-10 | 广东申菱环境系统股份有限公司 | Heat pump drying unit and control method thereof |
| CN113739557B (en) * | 2021-07-21 | 2023-01-10 | 广东申菱环境系统股份有限公司 | Coupling heat pump drying unit and control method thereof |
| CN113865322B (en) * | 2021-08-25 | 2023-03-31 | 青岛海尔空调电子有限公司 | Drying unit control method and drying system |
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| KR20170105660A (en) * | 2016-03-09 | 2017-09-20 | 주식회사 엠티에스 | Controlling method for dehimidifier by used heat pump with switch fuction of condenser |
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| CN207365577U (en) * | 2017-08-24 | 2018-05-15 | 上海伯涵热能科技有限公司 | A kind of drying unit of outer thermal starting and depth dehumidifying |
| CN109442891A (en) * | 2018-09-21 | 2019-03-08 | 上海伯涵热能科技有限公司 | A kind of dehumidifying drying unit and drying unit that efficient dehumidification combination module being pre-chilled using air inlet |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442891A (en) * | 2018-09-21 | 2019-03-08 | 上海伯涵热能科技有限公司 | A kind of dehumidifying drying unit and drying unit that efficient dehumidification combination module being pre-chilled using air inlet |
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| CN109442891A (en) | 2019-03-08 |
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Effective date of registration: 20240806 Address after: Room R21-A124, Room 403, No. 1, Mingzhu 1st Street, Hengli Town, Nansha District, Guangzhou City, Guangdong Province, 511466 Patentee after: Guangzhou Wan'ermei Engineering Technology Co.,Ltd. Country or region after: China Address before: Room 203, building 1, No. 23 and 33, Lane 466, Yindu Road, Minhang District, Shanghai Patentee before: SHANGHAI BOHAN THERMAL ENERGY TECHNOLOGY Co.,Ltd. Country or region before: China |