CN106213533B - Heat-pump-type recuperation of heat pine nut fruit stirs drying device - Google Patents
Heat-pump-type recuperation of heat pine nut fruit stirs drying device Download PDFInfo
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- CN106213533B CN106213533B CN201610583459.8A CN201610583459A CN106213533B CN 106213533 B CN106213533 B CN 106213533B CN 201610583459 A CN201610583459 A CN 201610583459A CN 106213533 B CN106213533 B CN 106213533B
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
- A23N12/00—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts
- A23N12/02—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts for washing or blanching
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of heat-pump-type recuperation of heat pine nut fruits to stir drying device, wind scoop left end horn mouth is gone along with sb. to guard him out in heat preservation baffle steered sinusoid humidity expansion bend, baffle and go out wind scoop left end horn mouth distance by Humidity Automatic Control, going out the outlet of wind scoop right end, with the vapour-liquid of outer machine coil pipe area to coexist corresponding；It is equipped with the drying sieve nest steel wire for placing pine nut fruit in heat preservation maintenance, the sine wave device that expands with heat and contract with cold can drive dry sieve nest steel wire moderately rotation tilts.Temperature fluctuation generation sine wave of the present invention expands with heat and contract with cold, and device is flexible to tilt constantly stirring for screen tray combination vibratory drive pine nut fruit drying process, advantageous uniform high-efficiency drying；Sinusoidal wave humidity expansion bend automatically controls the particularly advantageous raising rate of drying of moisture-removing air-flow amount by humid control air door；Coil pipe area coexists in the vapour-liquid that moisture exhausting port is directed at outer machine, and energy efficiency is realized in the particularly advantageous hot high efficiente callback of tail；Outer machine finned coil designs the particularly advantageous hot high efficiente callback of realization system tail, while compressor power consumption is especially low.
Description
Technical field
The present invention relates to a kind of heat-pump-type recuperation of heat pine nut fruits to stir drying device.
Background technology
Pine nut fruit is the seed of pine tree.Pine nut fruit is fatty, protein, carbohydrate etc..Pine nut fruit was both important
Chinese medicine eats the body-building heart long, moisturizes the skin, promotes longevity, also there is very high food therapy value.
The nutritive value of pine nut fruit is very high, in every hectogram stuffed pork breast with pine kernels, contains 16.7 grams of protein, 63.5 grams of fat, carbon water
The nutriments such as 9.8 grams of compound and 78 milligrams of mineral calcium, 236 milligrams of phosphorus, 6.7 milligrams of iron and unsaturated fatty acid.Pine
Fat constituent in sub- fruit is mainly the unsaturated fatty acids such as linoleic acid, linolenic acid, has softening blood vessel and prevention artery athero-
The effect of hardening.Therefore, the elderly often eats with pine nut fruit, prevents from causing angiocardiopathy because cholesterol increases.
In addition, it is phosphorous compared with horn of plenty in pine nut fruit, it also benefits to the cerebral nerve of people.It is to senile chronic bronchitis, bronchus
Asthma, constipation, rheumatic arthritis, neurasthenia and dizzy patient, there is certain auxiliary therapeutic action.
For the ease of preserving, needs that fresh pine nut fruit is dried, mainly have artificial natural drying at this stage and do
Dry machine dries two kinds.Natural drying is influenced by weather and efficiency is low, is unfavorable for very much the industrialized development of pine nut fruit；And it is existing
Although rapid draing may be implemented in drying machine drying, a large amount of heat, thus high energy consumption have also been discharged while due to hydrofuge,
It is economically also uneconomical.If a kind of low energy consumption and efficient pine nut fruit drying device are capable of providing, for pine nut fruit
Industrialized development will be very beneficial, and can effectively mitigate human labour, realize energy-saving and emission-reduction.
Invention content
The technical problem to be solved in the present invention is to overcome the shortcomings of the prior art and provide a kind of heating by heat-pump-type
So that the moisture in pine nut fruit is discharged, recycle the heat of discharge to greatest extent while hydrofuge, and can be automatic according to humidity size
The heat-pump-type recuperation of heat pine nut fruit for adjusting hydrofuge amount stirs drying device.
In order to overcome the deficiencies of the prior art, the present invention takes following technical scheme：
A kind of heat-pump-type recuperation of heat pine nut fruit stirs machine in drying device, including heat pump, outer machine and heat preservation and goes along with sb. to guard him, feature
It is：For the outer machine structure of heat pump similar to outdoor machine of air-conditioner, the refrigerant vapour from outer machine coil pipe enters vapour liquid separator by pipeline
Liquid phase is detached, then interior machine is connected by pipeline through compressor compression, interior machine structure is identical as machine in common air-conditioning, serves as herein cold
Condenser realizes the liquefaction of compressed gas and discharges amount of heat for dry materials, and the refrigerant of high pressure condensation liquefaction is by returning liquid
The flash distillation of Guan Zaijing capillary-compensateds enters lower coil pipe, and lower coil pipe tail end connects isocon by pipeline, in the connection of isocon lower end
Between coil pipe, the upper coil pipe of upper end connection, coil pipe tail end merged by pipeline, passes through air intake duct and connect vapour liquid separator, realize
Compression cycle；Heat preservation has gone along with sb. to guard him opening and closing and has carried out material disengaging operation, and door closes and realizes substantially closed, and heat preservation is gone along with sb. to guard him free
Gas air inlet and the gas channel for going out wind scoop composition, going out wind scoop left end horn mouth has baffle steered sinusoid humidity expansion bend, gear
Plate and go out wind scoop left end horn mouth distance by Humidity Automatic Control, realizes damp and hot air-flow output flow control, go out wind scoop right end and go out
Mouth coexists that coil pipe area is corresponding with the vapour-liquid of outer machine, is passed through in this way most beneficial for the heat of damp and hot tail gas by outer machine internal fan exhausting
The vapour-liquid of heat pump work coexists coil pipe area and is recovered, then by interior machine heat preservation go along with sb. to guard him it is interior discharged, realize hydrofuge and drying
Heat recovery cycle；Heat preservation go along with sb. to guard him in be equipped with place pine nut fruit drying sieve nest steel wire, sieve nest steel wire by steel wire work out and
At integral with frame installation, slot size is not passed through with minimum pine nut fruit and is preferred, and sieve nest steel wire has intermediate axis pin and electricity
Magnetic micro-vibration device, sieve nest steel wire can be around intermediate axis pin flexible rotating, but stroke is limited device control, in insulation is gone along with sb. to guard him
When temperature changes repeatedly in bound, sine wave expand with heat and contract with cold device can drive sieve nest steel wire moderately rotation tilt, cooperation
The appropriateness that the work of electromagnetism micro-vibration device can be achieved with pine nut fruit is rolled, is slided, the uniform high-efficiency drying of particularly advantageous pine nut fruit.
Sieve nest steel wire has the characteristics that screening area rate is high, contains material good permeability.
There is an axis at sinusoidal wave humidity expansion bend both ends, axis connection both sides end plate, both sides end plate by sinusoidal wave contour outside
The cylinder of shape connects and composes entirety, constitutes and is filled with refrigerant appropriate in the cavity of single unit system, makes refrigerant in certain temperature
It is coexistence of gas and liquid gas phase saturation state in range, sinusoidal wave humidity expansion bend is outer to be realized heat-insulated by thermal insulator, but axis can not be by shadow
Telescopic moving is rung, electric heater controlled humidity controller carries out control system of switching on or off electricity；When the electric heater energization present apparatus is heated up,
Since the pressure and temperature of internal saturated gas are there are correspondence, then internal pressure changes temperature change, with the change of temperature
Internal pressure follows variation；The cylinder of sine wave contours profiles can be made to generate the heat expansion generated with humid control temperature so cold
Contracting, using expanding with heat and contract with cold, flex effect driving corollary apparatus generation acts；Humidity sensor pickoff signals through humidity controller at
When reason judges that humidity is larger, it can control electric heater to heat and promote the elongation of sinusoidal wave humidity expansion bend, baffle is made to add with wind scoop distance
Ambassador's throttle opening increases, and enhances hydrofuge, and humidity is smaller, and air door turns down automatically, realizes that moisture-removing air-flow amount automatically controls.It uses
The cylinder of sine wave contours profiles has good stress and retractility, and is resistant to pressure and avoids stress concentration, loads energy
Power especially forces use especially reliable.
There is an axis at sine wave device both ends of expanding with heat and contract with cold, axis connection both sides end plate, both sides end plate by sinusoidal wave contour outside
The cylinder of shape connects and composes entirety, constitutes and is filled with refrigerant appropriate in the cavity of single unit system, makes refrigerant in certain temperature
It is coexistence of gas and liquid gas phase saturation state in range, when device sense ambient temperature changes, due to the pressure of internal saturated gas
With temperature there are correspondence, then internal pressure changes temperature change, follows variation with the change internal pressure of temperature, can make just
The cylinder of string wave contour shape generates expanding with heat and contract with cold with temperature, is generated using the flex effect driving corollary apparatus that expands with heat and contract with cold dynamic
Make.Using the cylinder of sine wave contours profiles, there is good stress and retractility, and be resistant to pressure and avoid stress collection
In, load capacity especially forces use especially reliable.
Compared with prior art, beneficial effects of the present invention also reside in：
Temperature fluctuation generates sine wave and expands with heat and contract with cold the flexible screen tray combination vibratory drive pine nut fruit drying process that tilts of device
It constantly stirs, advantageous uniform high-efficiency drying；Sinusoidal wave humidity expansion bend automatically controls moisture-removing air-flow amount by humid control air door
Particularly advantageous raising rate of drying；Coil pipe area coexists in the vapour-liquid that moisture exhausting port is directed at outer machine, and the particularly advantageous hot high efficiente callback of tail is realized
Energy efficiency；Outer machine finned coil designs the particularly advantageous hot high efficiente callback of realization system tail, while compressor power consumption is special
It is low.
Description of the drawings
Fig. 1 is the planar structure schematic diagram of the present invention.
The heat pump system schematic diagram of Fig. 2 present invention.
Fig. 3 is the planar structure schematic diagram of sinusoidal wave humidity expansion bend.
Fig. 4 is that sine wave expands with heat and contract with cold the planar structure schematic diagram of device.
Fig. 5 is the structural schematic diagram of dry sieve nest steel wire.
Each label indicates in figure：
A, B is sinusoidal wave humidity expansion bend；C, D is that sine wave expands with heat and contract with cold device；1, heat preservation is gone along with sb. to guard him；2, outer machine；3、
Interior machine；4, air inlet；5, go out wind scoop；6, compressor exhaust pipe；7, liquid back pipe；8, baffle；9, humidity sensor；10, humidity control
Device processed；21, dry sieve nest steel wire；22, axis pin；23, pine nut fruit；24,25 be electromagnetism micro-vibration device；26,27 be limit
Device；30, air intake duct；31, gas-liquid separator；32, compressor；33, capillary；34, fin；35, coil pipe；36,38 be pipeline；
37, separating pipe；39, coexistence of gas and liquid coil pipe area；41, sinusoidal wave humidity expansion bend axis；42 sinusoidal wave humidity expansion bend end plates；43、
Sinusoidal wave humidity expansion bend profile；44 sinusoidal wave humidity expansion bend cavitys；45, thermal insulator；46, electric heater；51, sine wave heat expansion
Shrinkage device axis；52, sine wave expands with heat and contract with cold device end plate；53, sine wave expand with heat and contract with cold device wheel exterior feature；54, sine wave expands with heat and contract with cold device
Cavity.
Specific implementation mode
In conjunction with attached drawing, the present invention is further elaborated with.
Heat-pump-type recuperation of heat pine nut fruit as shown in Figs. 1-5 stirs machine 3 in drying device, including heat pump, outer machine 2 and heat preservation and encloses
Shield 1, for outer 2 structure of machine of heat pump similar to outdoor machine of air-conditioner, the refrigerant vapour from outer machine coil pipe enters vapor-liquid separation by pipeline 30
Device 31 detaches liquid phase, then is compressed through compressor 32 and connect interior machine 3 by pipeline 6, and interior machine structure is identical as machine in common air-conditioning,
This serves as condenser, realizes the liquefaction of compressed gas and discharges amount of heat for dry materials, the refrigerant of high pressure condensation liquefaction
Entering lower coil pipe through the throttling flash distillation of capillary 33 again by liquid back pipe 7, lower coil pipe tail end connects isocon 37 by pipeline 36, point
The intermediate coil pipe of 37 lower end of flow tube connection, the upper coil pipe of upper end connection, coil pipe tail end are merged by pipeline 38, pass through air intake duct 30
Vapour liquid separator 31 is connected, realizes compression cycle；Heat preservation, which goes along with sb. to guard him 1, has opening and closing carry out material disengaging operation, and door close it is real
Now substantially closed, heat preservation goes along with sb. to guard him air inlet 4 and goes out the gas channel of the composition of wind scoop 5, and going out 5 left end horn mouth of wind scoop has gear
Plate 8 steered sinusoid humidity expansion bend A, B, baffle 8 and go out 5 left end horn mouth distance of wind scoop by Humidity Automatic Control, realize wet
Thermal current output flow controls, and going out the outlet of 5 right end of wind scoop, with the vapour-liquid of outer machine to coexist coil pipe area 39 corresponding, passes through outer machine 2 in this way
Internal fan exhausting coexists coil pipe area 39 by the vapour-liquid that heat pump works most beneficial for the heat of damp and hot tail gas and is recovered, then by interior
Machine 3 goes along with sb. to guard him the interior heat recovery cycle for being discharged, realizing hydrofuge and drying in heat preservation；Heat preservation, which goes along with sb. to guard him to be equipped in 1, places pine nut fruit
Drying sieve nest steel wire 21, sieve nest steel wire 21 is worked out by steel wire, with frame install it is integral, slot size is with minimum
Pine nut fruit, which does not pass through, to be preferred, and sieve nest steel wire 21 has intermediate axis pin 22 and electromagnetism micro-vibration device 24,25,21 energy of sieve nest steel wire
Around 22 flexible rotating of intermediate axis pin, but stroke is limited the control of device 26,27, when insulation goes along with sb. to guard him in 1 temperature in bound
When changing repeatedly, sine wave expand with heat and contract with cold device C, D can drive sieve nest steel wire 21 moderately rotation tilt, coordinate electromagnetism micro-vibration
Device 24,25, which works, can be achieved with appropriateness rolling, the sliding of pine nut fruit, the uniform high-efficiency drying of particularly advantageous pine nut fruit.
Sieve nest steel wire 21 has the characteristics that screening area rate is high, contains material good permeability.
Sinusoidal wave humidity expansion bend both ends have axis 41, axis 41 to connect both sides end plate 42, and both sides end plate 42 passes through sine
The cylinder 43 of wave contour shape connects and composes entirety, constitutes in the cavity 44 of single unit system and is filled with refrigerant appropriate, makes refrigeration
Agent is coexistence of gas and liquid gas phase saturation state in certain temperature range, sinusoidal wave humidity expansion bend it is outer by thermal insulator 45 realize every
Heat, but the unaffected telescopic moving of axis energy, 46 controlled humidity controller 10 of electric heater carry out control system of switching on or off electricity；When electric heater 46 is logical
When the electric present apparatus is heated up, since the pressure and temperature of internal saturated gas are there are correspondence, temperature change is then internal
Pressure change follows variation with the change internal pressure of temperature；The cylinder 43 of sine wave contours profiles can in this way generated with wet
What degree control temperature generated expands with heat and contract with cold, and using expanding with heat and contract with cold, flex effect driving corollary apparatus generation acts；Humidity sensor 9
When pickoff signals judge that humidity is larger through the processing of humidity controller 10, the heating of electric heater 46 can control to promote sinusoidal wave humidity flexible
Device A, B elongation, makes baffle 8 so that throttle opening is increased apart from increasing with wind scoop 5, enhances hydrofuge, humidity is smaller, and air door closes automatically
It is small, realize that moisture-removing air-flow amount automatically controls.Using the cylinder of sine wave contours profiles, there is good stress and retractility, and
And it is resistant to pressure and stress concentration, load capacity is avoided especially to force use especially reliable.
There is axis 51 at sine wave device both ends of expanding with heat and contract with cold, and axis connection both sides end plate 52, both sides end plate passes through sinusoidal impeller
The cylinder 53 of wide shape connects and composes entirety, constitutes in the cavity 54 of single unit system and is filled with refrigerant appropriate, refrigerant is made to exist
It is coexistence of gas and liquid gas phase saturation state in certain temperature range, when device sense ambient temperature changes, due to internal saturated air
The pressure of body is with temperature there are correspondence, and then internal pressure changes temperature change, with the change internal pressure of temperature with covariant
Change, the cylinder of sine wave contours profiles can be made to generate expanding with heat and contract with cold with temperature, is driven using the flex effect that expands with heat and contract with cold mating
Device generation acts.Using the cylinder of sine wave contours profiles, there is good stress and retractility, and be resistant to pressure and keep away
Exempt from stress concentration, load capacity especially forces use especially reliable.
Dashed region 39 is that coil pipe area coexists by the preferential vapour-liquid of low pressure after capillary 33 in refrigerant, this region refrigeration
Agent most easily realizes that strong vaporization heat absorption, temperature are also minimum, the particularly advantageous hot high efficiente callback of tail, while reducing compressor operating power
Consumption.
Above-mentioned only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form.It is any to be familiar with sheet
The technical staff in field, without deviating from the scope of the technical scheme of the present invention, all using the technology contents of the disclosure above
Many possible changes and modifications are made to technical solution of the present invention, or are revised as the equivalent embodiment of equivalent variations.Therefore, all
It is the content without departing from technical solution of the present invention, technical spirit is made to the above embodiment according to the present invention any simply repaiies
Change, equivalent variations and modification, all shall fall within the protection scope of the technical scheme of the invention.
Claims (1)
1. a kind of heat-pump-type recuperation of heat pine nut fruit stirs, machine in drying device, including heat pump, machine and heat preservation are gone along with sb. to guard him outside heat pump, special
Sign is：The outer machine structure of heat pump is similar to outdoor machine of air-conditioner, and the refrigerant vapour of machine coil pipe enters vapour-liquid by pipeline outside heat pump
Separator detaches liquid phase, then connects machine in heat pump by pipeline through compressor compression, machine in machine structure and common air-conditioning in heat pump
It is identical, condenser is served as herein, is realized the liquefaction of compressed gas and is discharged amount of heat for dry materials, high pressure condensation liquefaction
Refrigerant enters lower coil pipe through capillary-compensated flash distillation again by liquid back pipe, and lower coil pipe tail end connects isocon by pipeline, point
The intermediate coil pipe of flow tube lower end connection, the upper coil pipe of upper end connection, coil pipe tail end are merged by pipeline, and vapour is connected by air intake duct
Liquid/gas separator realizes compression cycle；Heat preservation has gone along with sb. to guard him opening and closing and has carried out material disengaging operation, and door close realize it is substantially close
Close, heat preservation go along with sb. to guard him air inlet and go out wind scoop composition gas channel, go out wind scoop left end horn mouth be equipped with baffle, baffle by
Sinusoidal wave humidity expansion bend controls, and baffle and goes out wind scoop left end horn mouth distance by Humidity Automatic Control, realizes that damp and hot air-flow is defeated
Outflow controls, and going out the vapour-liquid of the outlet of wind scoop right end and heat pump machine outside, to coexist coil pipe area corresponding, passes through wind in machine outside heat pump in this way
The heat that fan exhausting is conducive to damp and hot tail gas coexists coil pipe area by the vapour-liquid that heat pump works and is recovered, then is existed by machine in heat pump
The interior heat recovery cycle for being discharged, realizing hydrofuge and drying is gone along with sb. to guard him in heat preservation；Heat preservation is equipped with the drying for placing pine nut fruit in going along with sb. to guard him
Sieve nest steel wire, sieve nest steel wire are worked out by steel wire, and integral with frame installation, minimum pine nut fruit does not pass through sieve pore,
Sieve nest steel wire has intermediate axis pin and electromagnetism micro-vibration device, and sieve nest steel wire can be around intermediate axis pin flexible rotating, but stroke is limited
Position device control, when interior temperature is gone along with sb. to guard him in heat preservation to be changed repeatedly in bound, the sine wave device that expands with heat and contract with cold can drive sieve nest steel
Silk screen moderately rotation inclination, the appropriateness that cooperation electromagnetism micro-vibration device work can be achieved with pine nut fruit are rolled, are slided, advantageous pine nut fruit
Uniform high-efficiency drying；Sinusoidal wave humidity expansion bend both ends have axis, axis connection both sides end plate, both sides end plate to pass through sine wave
The cylinder of contours profiles connects and composes entirety, constitutes and is filled with refrigerant appropriate in the cavity of single unit system, makes refrigerant one
Determine to be coexistence of gas and liquid gas phase saturation state in temperature range, sinusoidal wave humidity expansion bend is outer to be realized heat-insulated, but axis energy by thermal insulator
Unaffected telescopic moving, electric heater controlled humidity controller carry out control system of switching on or off electricity；When electric heater energization sinusoidal wave humidity is stretched
When contracting device is heated up, since pressure and the temperature of internal saturated gas are there are correspondence, temperature change then internal pressure
Change, variation is followed with the change internal pressure of temperature；The cylinder of sine wave contours profiles can in this way generated with humid control
What temperature generated expands with heat and contract with cold, and using expanding with heat and contract with cold, flex effect driving corollary apparatus generation acts；Humidity sensor pickup letter
Number through humidity controller handle judge that humidity is larger when, can control electric heater heating promote sinusoidal wave humidity expansion bend extend, make
Baffle is increased with wind scoop distance makes throttle opening increase, and enhances hydrofuge, and humidity is smaller, and air door turns down automatically, realizes moisture-removing air-flow
Amount automatically controls；Sine wave device both ends of expanding with heat and contract with cold have axis, axis connection both sides end plate, both sides end plate to pass through sinusoidal wave contour
The cylinder of shape connects and composes entirety, constitutes and is filled with refrigerant appropriate in the cavity of single unit system, makes refrigerant in a constant temperature
It is coexistence of gas and liquid gas phase saturation state to spend in range, when device sense ambient temperature changes, due to the pressure of internal saturated gas
With temperature there are correspondence, then internal pressure changes temperature change power, follows variation with the change internal pressure of temperature, can make
The cylinder of sine wave contours profiles generates expanding with heat and contract with cold with temperature, and using expanding with heat and contract with cold, flex effect driving corollary apparatus generates
Action.
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| CN201610583459.8A CN106213533B (en) | 2016-07-25 | 2016-07-25 | Heat-pump-type recuperation of heat pine nut fruit stirs drying device |
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| CN201610583459.8A CN106213533B (en) | 2016-07-25 | 2016-07-25 | Heat-pump-type recuperation of heat pine nut fruit stirs drying device |
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| CN106213533B true CN106213533B (en) | 2018-08-10 |
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| CN103206757A (en) * | 2013-04-09 | 2013-07-17 | 林开生 | Double-circulation constant temperature-humidity air-conditioner and control device thereof |
| CN104162478A (en) * | 2013-05-16 | 2014-11-26 | 常州市鼎亨机电设备有限公司 | Crusher self-swing screen mesh |
| CN203435668U (en) * | 2013-07-18 | 2014-02-19 | 成都蓉阳科技有限公司 | Split type air source waste heat recycling type tobacco heat pump drying machine set |
| CN105066278A (en) * | 2015-08-03 | 2015-11-18 | 珠海格力电器股份有限公司 | Heat pump set |
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| CN106213533A (en) | 2016-12-14 |
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Effective date of registration: 20191115 Address after: 221700 Jiangsu city of Xuzhou province Fengxian County Dasha Town Industrial Park Patentee after: Jiangsu huaptek Petroleum Equipment Co., Ltd. Address before: 416000 Hunan, Xiangxi Tujia and Miao Autonomous Prefecture, Jishou City People's road, No. 120 Patentee before: Jishou University |
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Application publication date: 20161214 Assignee: XUZHOU DINGLI METAL MECHANICAL & ELECTRICAL CO.,LTD. Assignor: JIANGSU HUAPU TAIKE PETROLEUM EQUIPMENT Co.,Ltd. Contract record no.: X2021980015869 Denomination of invention: Heat pump type heat recovery pinecone turning drying device Granted publication date: 20180810 License type: Exclusive License Record date: 20211222 |