CN201215434Y - Wind quantity variable roller type down-supply up-return medium high temperature heat pump dryer - Google Patents

Wind quantity variable roller type down-supply up-return medium high temperature heat pump dryer Download PDF

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Publication number
CN201215434Y
CN201215434Y CNU2008200813219U CN200820081321U CN201215434Y CN 201215434 Y CN201215434 Y CN 201215434Y CN U2008200813219 U CNU2008200813219 U CN U2008200813219U CN 200820081321 U CN200820081321 U CN 200820081321U CN 201215434 Y CN201215434 Y CN 201215434Y
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CN
China
Prior art keywords
heat pump
heat
return air
rotating cylinder
blower fan
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2008200813219U
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Chinese (zh)
Inventor
王辉涛
王�华
王仕博
黄晓艳
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Kunming University of Science and Technology
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Kunming University of Science and Technology
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Priority to CNU2008200813219U priority Critical patent/CN201215434Y/en
Application granted granted Critical
Publication of CN201215434Y publication Critical patent/CN201215434Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a variable air volume roller type low-feed up-reflux high temperature heat pump dryer, comprising a heat pump working medium circulation loop, an air internal circulation loop and an electric drum. The lower part of an evaporator (2) is arranged with a water collection plate and a drain pipe (12), a reflux room at the bottom of the drum (5) is divided into a space for arranging a heat pump compressor (1), while the two spaces are separated by a thermal insulation wallboard (8), the lower part of the dry space is arranged with a water collection groove and a drain pipe (8), a backboard type recooler (11) of the heat pump refrigeration system is arranged at the back, two drive motor circulation fan motors (9) and a drum motor circulation fan motor (10) are mounted at the back correspondingly. The heating performance of the dryer reaches 3.8 and the dryer can save electricity of 50% at least more than the electric heating dryers, and has adjustable drying ability according to the object kinds, water contents and the demand on dry time.

Description

Serve return air moderate and high temperature heat drying machine under the variable air rate drum-type
Technical field
The utility model relates to serves return air moderate and high temperature heat drying machine under a kind of variable air rate drum-type, promptly use dry machine, the apparatus of low boiling working fluid steam compression heat pump, heat (or steam) in particular for mushroom, pine nut, pseudo-ginseng, sanchi flower, rhizoma Gastrodiae, day lily, wizened other the suitable common electrical that reaches of all kinds of meat such as tealeaves, administration's sheet, walnut, auricularia auriculajudaes, belong to using energy source and energy-saving field.
Background technology
Can make the drying equipment of article fast dewatering in industrial or agricultural and daily life, important role be arranged, but the drying equipment of existing market supply all is to adopt electrical heating or steam-heated (0.4-0.6MPa gauge pressure) mode, just directly exclusive after the moisture content of absorbing articles through the high temperature drying air after the heating, cause the waste extremely of energy, especially electrical heating type drying equipment consumption electric weight is very big, the power consumption of (water) washing dryer that as a drying capacity is 30kg/h is just more than 50Kw, cause operating cost very high, product tea district in Yunnan, moisture content all will become the gross tea of moisture content about 20% through completing at the bright leaf more than 40%, what now all adopt in the process of completing is the heat drying equipment that uses firewood (employing steam is also arranged recently), there are bigger environmental pollution and energy dissipation, in the dry run of the living tea that is dewatered to moisture content about 8% by gross tea, past is the mode that adopts the sun to shine, now because needs that autumn tea is produced and the further requirement that improves tea quality, a lot of tea processing factories are all adopting steam or electric seasoning equipment, cross in the heating process of range request and also have firing equipment energy consumption problem of higher in the filial piety of sending out fast of producing ripe tea simultaneously.Steam compression heat pump can absorb heat from low-temperature heat source, and heating performance coefficient is electrically heated 3-4 times more than, is very superior (confession) the hot equipment of energy-conservation adding of performance.Comparative maturity is hot pump in low temp dry heat equipment now, but there is the temperature not high (in 70 ℃) of the dry air that is used to dewater in this equipment, dry wettability power is lower, seriously limited its practical application, the art of this patent can make the temperature of dry air reach more than 100 ℃, can be applied to most dry field, thus the energy consumption of having saved drying equipment greatly.
Summary of the invention
The purpose of this utility model is to provide serves return air moderate and high temperature heat drying machine under a kind of variable air rate drum-type, be a kind of dry machine, apparatus that uses the low boiling working fluid steam compression heat pump, can realize than the power consumption of electrical drying equipment saving more than at least 50%.
The technical scheme that its technical problem that solves the utility model adopts is:
This dry equipment comprises: 1) heat pump fluid closed circuit, 2) the inside air closed circuit, 3) circular rotating cylinder (rotating speed 32r/min), wherein:
1) the heat pump fluid closed circuit comprises: 3P heat pump dedicated compressor, evaporation coil, condenser coil, backboard formula recooler, reservoir, vapour liquid separator, electronic expansion valve and copper pipe, refrigeration working medium device for drying and filtering;
2) the inside air closed circuit comprises: variable air rate low noise blower fan, plenum chamber, return air chamber, withdrawable screen pack, stainless steel sandwich wallboard.
The outer formation cuboid of this dry equipment is cabinet type, exterior panel adopts the sandwich thermal insulation board, install in order to the circular rotating cylinder of the porous of placing article in a side, top and lower space at rotating cylinder are provided with return air chamber and plenum chamber respectively, separate with it with stainless steel porous plate (do return air with air-supply with), in return air chamber inside, top variable air rate low noise blower fan is housed, withdrawable screen pack is set between the blower fan suction inlet, on the pipeline that forms by heat-insulating wall of the lateral space of blower fan outlet and rotating cylinder, evaporimeter and condenser are set in proper order, condenser is below evaporimeter, in the evaporimeter bottom water-collecting tray and drainpipe are set, in the return air chamber of the bottom of rotating cylinder, be partitioned into the space (also can be arranged on the outside) of placing heat pump compressor, keep apart by heat-insulating wall between two spaces, in the bottom of dry place water leg and drainpipe are set, the backboard formula recooler of heat pump refrigerating system is arranged on the back side, circulating fan adopts the direct connection transmission, rotating cylinder adopts belt pulley transmission, the relevant position, the back side that two drive motors are installed in.
Adopt R600a (iso-butane, C 4H 10), R600 (normal butane, C 4H 10), R236ea (HFC-236fa, C 3H 2F 6), R601 (pentane, C 5H 12), R245fa (pentafluoropropane, C 3H 3F 5), R601a1 (isopentane, C 5H 12), n-hexane (C 6H 14) as the refrigeration system cycle fluid.
Air circulation fans adopts double speed blower fan (or frequency conversion fan) to change its drying capacity.
Can be used for mushroom, pine nut, pseudo-ginseng, sanchi flower, rhizoma Gastrodiae, day lilies, the wizened occasions that reach other suitable common electrical heating (or steam) drying equipment of all kinds of meat such as tealeaves, administration's sheet, walnut, auricularia auriculajudae.
When specifically article being carried out drying, can reach requirement according to the moisture content of article to drying time, adjust the rotating speed of circulating fan, thereby reach the purpose that changes rate of drying.
The beneficial effects of the utility model are:
(1) can reach than the power consumption of electrical drying equipment saving more than at least 50%, heating performance coefficient is 3.8;
(2) can realize the inner loop of dry air, environment is not had thermal pollution;
(3) can be according to the kind of article, the drying capacity that moisture content reaches equipment that the specific requirement of drying time is adjusted.
Describe concrete structure of the present utility model in detail below in conjunction with accompanying drawing, but structure of the present utility model is not limited to shown in the accompanying drawing.
Description of drawings
Fig. 1 is the elevation that send down return air moderate and high temperature heat drying machine on the variable air rate drum-type;
Fig. 2 is the side view that send down return air moderate and high temperature heat drying machine on the variable air rate drum-type;
Fig. 3 is the vertical view that send down return air moderate and high temperature heat drying machine on the variable air rate drum-type;
Fig. 4 is the refrigeration system piping diagram that send down return air moderate and high temperature heat drying machine on the variable air rate drum-type.
The specific embodiment
Among Fig. 1,2,3 and 4,3P heat pump compressor 1, evaporimeter 2, condenser 3, variable air rate low noise blower fan 4, circular rotating cylinder (32 rev/mins) 5, return air chamber stainless steel porous barrier 6, plenum chamber stainless steel porous be every 7, heat-insulating wall 8, circulating fan motor 9, tube rotaring motor 10, backboard formula recooler 11, drainpipe 12, reservoir 13, device for drying and filtering 14, choke valve 15, vapour liquid separator 16, copper pipe 17.
The utility model is made up of heat pump fluid closed circuit, inside air closed circuit, circular rotating cylinder 5; The heat pump fluid closed circuit comprises 3P heat pump dedicated compressor 1, evaporation coil, condenser coil, backboard formula recooler 11, reservoir 13, vapour liquid separator 16, electronic expansion valve and copper pipe 17, refrigeration working medium device for drying and filtering 14; The inside air closed circuit comprises: variable air rate low noise blower fan 4, plenum chamber, return air chamber, withdrawable screen pack, stainless steel sandwich heat-insulating wall 8; The outer formation cuboid of this dry equipment is cabinet type, exterior panel is that heat-insulating wall 8 adopts the sandwich thermal insulation board, install in order to the circular rotating cylinder 5 of the porous of placing article in a side, top and lower space at rotating cylinder 5 are provided with return air chamber and plenum chamber respectively, use return air chamber stainless steel porous barrier 6 respectively, (do return air with air-supply with) separates with it plenum chamber stainless steel porous every 7, in return air chamber inside, top variable air rate low noise blower fan 4 is housed, between blower fan 4 suction inlets, withdrawable screen pack is set, on the pipeline that forms by heat-insulating wall 8 of the lateral space of blower fan 5 outlet and rotating cylinder 4, evaporimeter 2 and condenser 3 are set in proper order, condenser 3 is below evaporimeter 2, in evaporimeter 2 bottoms water-collecting tray and drainpipe 12 are set, in the return air chamber of the bottom of rotating cylinder 5, be partitioned into the space of placing heat pump compressor 1, also can be arranged on the outside, keep apart by heat-insulating wall 8 between two spaces, water leg and drainpipe 12 are set in the bottom of dry place, the backboard formula recooler 11 of heat pump refrigerating system is arranged on the back side, circulating fan 4 adopts the direct connection transmission, rotating cylinder 5 adopts belt pulley transmission, two drive motors circulating fan motors 9, tube rotaring motor 10 is installed in relevant position, the back side.
Operation principle and process are as follows:
(1) air circulation: porous rotating cylinder 5 interior moist hot-airs pass through top return air porous barrier 6 and are arranged at the screen pack of fans entrance, be recycled blower fan 4 and add cooling cooling in the evaporimeter 2 that is sent to heat pump, when air themperature drops to dew point when following, airborne moisture content just freeze-outs, in time get rid of, air after dewatering is sent to heat in the condenser 3 that is arranged at evaporimeter below, side and becomes heated dry air, then by being located at the wind pushing cavity of bottom, air-supply porous barrier 7, be blown into the moisture content of the dry place absorbing articles at porous rotating cylinder 5 places of placing article, be recycled blower fan afterwards again and suck beginning air circulation once more, airborne heat after the dry goods is just absorbed by the evaporimeter 2 of heat pump fully like this, be converted into the high temperature condensation heat that adds hot-air by heat pump cycle again, realized the recycling of heat, circulating fan 4 has height two retaining rotating speeds, adopts high-grade rotating speed when needs rapid draing.
(2) heat pump: low-temp low-pressure working medium (as the R601a) steam that is produced by the air heat of coming from dry place in the evaporimeter 2 is inhaled into compressor 1 through behind the vapour liquid separator 16, HTHP working substance steam process blast pipe after overcompression is in condenser 3, heating in the air of evaporimeter 2, cycle fluid also is condensed into the liquid condition under the condensing pressure, pass through the cold again of backboard formula recooler 11 again, through behind the device for drying and filtering 14, flow into electronic throttle 15, become the low-temp low-pressure vapour-liquid two-phase mixture under the evaporating pressure, finished evaporation process by air heat in the time of in process evaporimeter 2, arrive vapour liquid separator 16 again, thereby finish a circulation.Heat pump compressor is placed on bottom space.
Produce the tea-leaf withering machine (tealeaves is dried to 8% living tea from the gross tea of 20% moisture content) of a drying capacity 30kg/h, select the heat pump compressor of a 3P for use, the high-pressure liquid tube of refrigeration system adopts copper pipe d9.52 x 0.8, the low pressure return tube adopts copper pipe d15.88 x 0.8, circulating fan is selected BDF3.5 for use, and its top gear air quantity is 3500m 3/ h, deep low gear air quantity are 2500m 3/ h, heat-insulating wall adopts the thick corrosion resistant plate therebetween of 0.8mm 50mm polyvinyl chloride warming plate, the air-supply plate of plenum chamber and return air chamber and return air plate adopt the big orifice plate of the thick stainless steel of 0.8mm, adopt the motorized pulleys of rotating speed 32r/min, blower fan outlet is adopted three windproof tube cloth is soft and connects, all fill up SD special (purpose) rubber shock absorber under compressor and the blower fan, refrigeration system is filled and is added R600a (iso-butane, C 4H 10), R600 (normal butane, C4H 10), R236ea (HFC-236fa, C 3H 2F 6), R601 (pentane, C 5H 12), R245fa (pentafluoropropane, C 3H 3F 5), R601a1 (isopentane, C 5H 12), n-hexane (C 6H 14).

Claims (1)

1, serves return air moderate and high temperature heat drying machine under a kind of variable air rate drum-type, it is characterized in that: form by heat pump fluid closed circuit, inside air closed circuit, circular rotating cylinder (5); The heat pump fluid closed circuit comprises 3P heat pump dedicated compressor (1), evaporation coil, condenser coil, backboard formula recooler (11), reservoir (13), vapour liquid separator (16), electronic expansion valve and copper pipe (17), refrigeration working medium device for drying and filtering (14); The inside air closed circuit comprises: variable air rate low noise blower fan (4), plenum chamber, return air chamber, withdrawable screen pack, stainless steel sandwich heat-insulating wall (8); The outer formation cuboid of this dry equipment is cabinet type, outer heat-insulating wall (8) one sides are installed in order to the circular rotating cylinder (5) of the porous of placing article, top and lower space at rotating cylinder (5) are provided with return air chamber and plenum chamber respectively, respectively by return air chamber stainless steel porous barrier (6), plenum chamber stainless steel porous barrier (7) separates with it, in return air chamber inside, top variable air rate low noise blower fan (4) is housed, between blower fan (4) suction inlet, withdrawable screen pack is set, on the pipeline that forms by heat-insulating wall (8) of the lateral space of blower fan (5) outlet and rotating cylinder (5), evaporimeter (2) and condenser (3) are set in proper order, condenser (3) is in the below of evaporimeter (2), in evaporimeter (2) bottom water-collecting tray and drainpipe (12) are set, in the return air chamber of the bottom of rotating cylinder (5), be partitioned into the space of placing heat pump compressor (1), keep apart by heat-insulating wall (8) between two spaces, water leg and drainpipe (12) are set in the bottom of dry place, the backboard formula recooler (11) of heat pump refrigerating system is arranged on the back side, two drive motors circulating fan motors (9), the relevant position, the back side that tube rotaring motor (10) is installed in.
CNU2008200813219U 2008-06-06 2008-06-06 Wind quantity variable roller type down-supply up-return medium high temperature heat pump dryer Expired - Fee Related CN201215434Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200813219U CN201215434Y (en) 2008-06-06 2008-06-06 Wind quantity variable roller type down-supply up-return medium high temperature heat pump dryer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200813219U CN201215434Y (en) 2008-06-06 2008-06-06 Wind quantity variable roller type down-supply up-return medium high temperature heat pump dryer

Publications (1)

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CN201215434Y true CN201215434Y (en) 2009-04-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102937539A (en) * 2012-06-26 2013-02-20 湖南三德科技发展有限公司 Hot air penetrating internal circulation coal sample dehumidifying device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102937539A (en) * 2012-06-26 2013-02-20 湖南三德科技发展有限公司 Hot air penetrating internal circulation coal sample dehumidifying device
CN102937539B (en) * 2012-06-26 2015-10-28 湖南三德科技股份有限公司 Hot blast penetrates internal-circulation type coal sample dehumidifying device

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090401

Termination date: 20120606