CN103398565A - Dehumidification heat-pump type grain drying machine - Google Patents

Dehumidification heat-pump type grain drying machine Download PDF

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Publication number
CN103398565A
CN103398565A CN2013103212214A CN201310321221A CN103398565A CN 103398565 A CN103398565 A CN 103398565A CN 2013103212214 A CN2013103212214 A CN 2013103212214A CN 201310321221 A CN201310321221 A CN 201310321221A CN 103398565 A CN103398565 A CN 103398565A
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CN
China
Prior art keywords
drying
heat
air
condenser
drying unit
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CN2013103212214A
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CN103398565B (en
Inventor
祝富华
郁志扬
邹为奇
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SKYSEA REFRIGERATION & ELECTRICAL EQUIPMENT Co Ltd
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SKYSEA REFRIGERATION & ELECTRICAL EQUIPMENT Co Ltd
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Priority to CN201310321221.4A priority Critical patent/CN103398565B/en
Publication of CN103398565A publication Critical patent/CN103398565A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/85Food storage or conservation, e.g. cooling or drying

Abstract

The invention discloses a dehumidification heat-pump type grain drying machine which comprises a heat-pump drying unit and a drying tower connected with the heat-pump drying unit. Through working of a compressor in the heat-pump drying unit, heat in air is absorbed, and delivered with a portion of electric energy consumed in purpose of driving a cooling system to work into a drying channel, so that drying of grain in the drying tower is realized. Drying of the grain is efficient, and energy consumption is reduced.

Description

Dehumidifying pump type heat grain drying machine
Technical field
The present invention relates to agribusiness middle peasant products drying-machine group, specifically a kind of dehumidifying pump type heat grain drying machine.
Background technology
At present, the dryer that mainly adopts of China and even the whole world mainly contains directly method of the burning energy or crops of " fuel oil-air-supply " " burn wood-air-supply " or other.
The unit that " fuel oil-air-supply " reaches " burn wood-air-supply " is all fuel type, can increase flue dust, CO, CO 2Deng the discharging of pollutant, this is worthless in increasingly important situation of environmental requirement under the condition of current China atmospheric environment severe exacerbation." fuel oil-air-supply " technique is mainly done fuel with diesel oil, can strive fuel oil with other industry, not only can increase the weight of yet more can increase the weight of the pollution of environment the energy supply pressure of country." burn wood-air-supply " technique is mainly done fuel with stalk, bavin, rice chaff etc., and these fuel are more serious to the pollution of environment." fuel oil-air-supply " reaches " burn wood-air-supply " unit is all that mineral and biology act as a fuel, and the costliness of use cost certainly will increase the burden of the vast farmers of China.Moreover the imperfect combustion of fuel must cause again the loss of air-polluting aggravation and the energy.
Summary of the invention
For the deficiencies in the prior art, the invention provides dehumidifying pump type heat grain drying machine, solve the environmental pollution that exists in prior art serious, the drawback that use cost is high, can be efficiently to the cereal heating, drying.
the present invention is achieved through the following technical solutions: dehumidifying pump type heat grain drying machine, comprise heat pump drying unit and the drying tower that is connected with described heat pump drying unit, described heat pump drying unit comprises air inlet, described heat pump drying unit comprises the air dewetting loop, and described air dewetting loop comprises the compressor that is connected successively, cross valve, condenser, device for drying and filtering, the first heating power expansion valve, dehumidification heat exchange, and the described cross valve of described dehumidification heat exchange connection, described heat pump drying unit also comprises air circulation duct and at least one refrigerant circulation loop, described refrigerant circulation loop comprises described compressor, described cross valve, described condenser, described device for drying and filtering, the second heating power expansion valve and evaporimeter, described compressor, described cross valve, described condenser, described device for drying and filtering, the second heating power expansion valve and evaporimeter are connected to form closed circuit successively, and described air circulation duct comprises the pipeline that is communicated with described air inlet, and described pipeline is successively by being communicated with described drying tower after described dehumidification heat exchange and condenser.
In technique scheme, in described heat pump drying unit bottom, be provided with roller.
In technique scheme, be positioned at described air inlet place at described heat pump drying unit and be provided with the first blower fan.
In technique scheme, at described heat pump drying unit top, be provided with air-ducting ring and the second blower fan.
In technique scheme, be provided with humidity detector in described drying tower, when described cereal humidity was reduced to setting value, described humidity detector transmitted and makes described compressor quit work.
In technique scheme, described condenser is finned cooler, and described evaporimeter is finned evaporator.
In technique scheme, described refrigerant circulation loop has two.
1, the present invention has following beneficial effect: environmental protection is good:, without any pollution, without any burning, efflux thing in the present invention, can not cause damage to human body, have good social benefit.
2, energy consumption is low: energy-saving effect is outstanding, the investment repayment phase is short, and this product Energy Efficiency Ratio is namely inputted the electricity of 1kw between grain harvest general 3-5 in season, can produce the heat of 3-5kw, compare with the direct burning energy or crops, will save a lot on use cost.
3, security performance is good, and without any hidden danger: different from other kind grain drying machines, the present invention adopts air-condition principle to heat cereal, does not catch fire, the potential safety hazard such as leakage of oil.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the principle schematic of refrigerant circulation loop of the present invention.
Fig. 3 is the structural representation of source pump of the present invention.
Fig. 4 is the structural representation of go-cart in the present invention.
The specific embodiment
below in conjunction with accompanying drawing and the specific embodiment, the present invention is described in further detail: referring to Fig. 1 to Fig. 3, dehumidifying pump type heat grain drying machine, comprise heat pump drying unit 1 and the drying tower 2 that is connected with described heat pump drying unit 1, described heat pump drying unit comprises air inlet 10, described heat pump drying unit 1 comprises the air dewetting loop, and described air dewetting loop comprises the compressor 11 that is connected successively, cross valve 12, condenser 13, device for drying and filtering 14, the first heating power expansion valve 15, dehumidification heat exchange 16, and the described dehumidification heat exchange 16 described cross valves 12 of connection, described heat pump drying unit 1 also comprises air circulation duct and at least one refrigerant circulation loop, described refrigerant circulation loop comprises compressor 11, cross valve 12, condenser 13, device for drying and filtering 14, the second heating power expansion valve 150, evaporimeter 160, described compressor 11, cross valve 12, condenser 13, device for drying and filtering 14, the second heating power expansion valve 150, evaporimeter 160 is connected to form closed circuit successively, and described air circulation duct comprises the pipeline that is communicated with described air inlet 10, and described pipeline is successively by being communicated with described drying tower 2 after described dehumidification heat exchange 16 and condenser 13.
Be provided with roller 17 in described heat pump drying unit 1 bottom, make unit to move freely.
Be positioned at described air inlet 10 places at described heat pump drying unit 1 and be provided with the first blower fan (accompanying drawing does not show), utilize described the first blower fan better surrounding air to be imported heat exchange in dryer.
Be provided with air-ducting ring 18 and the second blower fan (accompanying drawing does not show) at described heat pump drying unit 1 top, in refrigerant circulation loop, cold, by the second blower fan, is discharged to air and goes from air-ducting ring.
Be provided with humidity detector in described drying tower 2, when described cereal humidity was reduced to setting value, described humidity detector transmitted and makes described compressor quit work.
Described condenser 13 is finned cooler, and described evaporimeter 160 is finned evaporator.
Described refrigerant circulation loop has two.
Below the concrete principle of the present invention is described in detail: cold-producing medium working medium under the piston action of compressor, becomes the low-temp low-pressure gas compression gas of HTHP; Thereby the gas of HTHP enters after condenser and is cooled into liquid and emits amount of heat; Thereby the cold air in air circulation duct absorbs its heat constantly to rise and becomes high-temperature hot air; Cold-producing medium working medium is by after condenser, then enters the liquid that device for drying and filtering, heating power expansion valve, cold-producing medium become low-temp low-pressure and enter dehumidification heat exchange, and refrigerant gas flashes to the gas of normal temperature low pressure, returns compressor.Cold-producing medium working medium absorbs the heat of air in evaporimeter, under the mechanism of compressor, the evolution of heat from condenser, change the heat of hot blast into.Whole source pump is used contrary Carnot cycle principle, do work and make working medium produce physical phase transition (liquid state-gaseous state-liquid state) by heat pump, utilize in the reciprocation cycle phase transition process characteristic of uninterruptedly absorbing heat with heat release, by condenser, air circulation duct is constantly heated, make cold air be warmed up to gradually high-temperature hot air; Owing to effectively utilizing airborne heat, the meeting of the relative traditional combustion oven dry of the Energy Efficiency Ratio during oven dry is more than 3-5 times.
Surrounding air enters from the Drying unit air inlet by the first blower fan, first pass through dehumidification heat exchange, water content in extracting air, this moment, surrounding air became dry cold air by the normal temperature and pressure state, dry cold air is be heated into the air of normal temperature through fin condenser, to reach the purpose of the relative humidity that reduces air.The air of dry normal temperature is at the condenser through refrigerant circulation loop, and the heated drying air that is heated into 55 ℃ is dried the cereal in drying tower.
And in dry operating mode, this moment, surrounding air need not dehumidifying, therefore closed dehumidification heat exchange, opened evaporimeter and carried out single drying cycle pattern.Opposite when having a humid climate, open dehumidification heat exchange, close evaporimeter and carry out the dehumidifying drying circulation pattern.
Have in described drying tower 2 and load the go-cart 3 that cereal is used, referring to Fig. 4, be rotationally connected cereal container 4 by rotating shaft (accompanying drawing does not show) in described go-cart 3, described cereal container 4 comprises two flaring accommodation sections 40,40 of described accommodation sections are fixedly connected with by baffle plate 42, the through hole 43 that passes through for cereal is set in baffle plate 42, be provided with openable cover plate 41 on the top of at least one accommodation section 40, when cereal is placed,, by opening cover plate 41, then pour in described accommodation section 40; Rotating shaft drives by a drive unit (accompanying drawing does not mark), be provided with controller on drive unit, controller makes the every certain hour of crossing of rotating shaft rotate 180 degree, this moment, the cereal in accommodation section 40 just fell into another accommodation section 40 from the through hole 43 of middle baffle plate 42 therein, make cereal be heated more even, effectively improved drying efficiency and the quality of cereal.The outer wall of described container is netted, be convenient to environment in hot-air effectively contact, be convenient to the conduction of heat.

Claims (7)

1. the pump type heat grain drying machine dehumidifies, comprise heat pump drying unit (1) and the drying tower (2) that is connected with described heat pump drying unit (1), described heat pump drying unit (1) comprises air inlet (10), it is characterized in that: described heat pump drying unit (1) comprises the air dewetting loop, described air dewetting loop comprises the compressor (11) that is connected successively, cross valve (12), condenser (13), device for drying and filtering (14), the first heating power expansion valve (15), dehumidification heat exchange (16), and described dehumidification heat exchange (16) connects described cross valve (12), described heat pump drying unit (1) also comprises air circulation duct and at least one refrigerant circulation loop, described refrigerant circulation loop comprises described compressor (11), described cross valve (12), described condenser (13), described device for drying and filtering (14), the second heating power expansion valve (150) and evaporimeter (160), described compressor (11), described cross valve (12), described condenser (13), described device for drying and filtering (14), the second heating power expansion valve (150) and evaporimeter (160) are connected to form closed circuit successively, described air circulation duct comprises the pipeline that is communicated with described air inlet (10), and described pipeline is successively by being communicated with described drying tower (2) after described dehumidification heat exchange (16) and condenser (13).
2. dehumidifying pump type heat grain drying machine as claimed in claim 1, is characterized in that: in described heat pump drying unit (1) bottom, be provided with roller (17).
3. dehumidifying pump type heat grain drying machine as claimed in claim 1, is characterized in that: be positioned at described air inlet (10) at described heat pump drying unit (1) and locate to be provided with the first blower fan.
4. dehumidifying pump type heat grain drying machine as claimed in claim 1, is characterized in that: at described heat pump drying unit (1) top, be provided with air-ducting ring (18) and the second blower fan.
5. dehumidifying pump type heat grain drying machine as claimed in claim 1, it is characterized in that: be provided with humidity detector in described drying tower (2), when described cereal humidity was reduced to setting value, described humidity detector transmitted and makes described compressor quit work.
6. dehumidifying pump type heat grain drying machine as claimed in claim 1, it is characterized in that: described condenser (13) is finned cooler, and described evaporimeter (160) is finned evaporator.
7. dehumidifying pump type heat grain drying machine as claimed in claim 1, it is characterized in that: described refrigerant circulation loop has two.
CN201310321221.4A 2013-07-29 2013-07-29 Dehumidification heat-pump type grain drying machine Active CN103398565B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105961582A (en) * 2016-05-03 2016-09-28 中国科学院理化技术研究所 Food grain drying system through heat pump
CN106072710A (en) * 2016-07-18 2016-11-09 吉首大学 A kind of Semen Castaneae acanthosphere is dried removing device
CN106091737A (en) * 2016-06-16 2016-11-09 吉首大学 A kind of drum-type colds and heat succeed each other salting apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196526A (en) * 1978-10-26 1980-04-08 CEAF S.p.A. Drying plant, particularly for timber
JPH0448188A (en) * 1990-06-15 1992-02-18 Daikin Ind Ltd Grain drying device
JPH04327784A (en) * 1991-04-30 1992-11-17 Matsushita Electric Ind Co Ltd Heat pump type drier
CN102331160A (en) * 2011-08-03 2012-01-25 三通(常州)电子科技有限公司 Heat pump industrial drying machine
CN102954672A (en) * 2011-08-19 2013-03-06 东莞市蓝冠环保节能科技有限公司 Internal recycle moist-air latent heat recovering type heat pump drying device
CN202792733U (en) * 2012-08-07 2013-03-13 广州凯能电器科技有限公司 Heat pump drying dehumidifier
CN203518500U (en) * 2013-07-29 2014-04-02 浙江天洲制冷机电有限公司 Dehumidification heat pump type grain drying machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196526A (en) * 1978-10-26 1980-04-08 CEAF S.p.A. Drying plant, particularly for timber
JPH0448188A (en) * 1990-06-15 1992-02-18 Daikin Ind Ltd Grain drying device
JPH04327784A (en) * 1991-04-30 1992-11-17 Matsushita Electric Ind Co Ltd Heat pump type drier
CN102331160A (en) * 2011-08-03 2012-01-25 三通(常州)电子科技有限公司 Heat pump industrial drying machine
CN102954672A (en) * 2011-08-19 2013-03-06 东莞市蓝冠环保节能科技有限公司 Internal recycle moist-air latent heat recovering type heat pump drying device
CN202792733U (en) * 2012-08-07 2013-03-13 广州凯能电器科技有限公司 Heat pump drying dehumidifier
CN203518500U (en) * 2013-07-29 2014-04-02 浙江天洲制冷机电有限公司 Dehumidification heat pump type grain drying machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105961582A (en) * 2016-05-03 2016-09-28 中国科学院理化技术研究所 Food grain drying system through heat pump
CN105961582B (en) * 2016-05-03 2019-11-12 中国科学院理化技术研究所 A kind of heat pump foodstuff adustion system
CN106091737A (en) * 2016-06-16 2016-11-09 吉首大学 A kind of drum-type colds and heat succeed each other salting apparatus
CN106091737B (en) * 2016-06-16 2018-01-02 吉首大学 A kind of drum-type colds and heat succeed each other salting apparatus
CN106072710A (en) * 2016-07-18 2016-11-09 吉首大学 A kind of Semen Castaneae acanthosphere is dried removing device

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