CN103438682A - Heat pump drying equipment - Google Patents
Heat pump drying equipment Download PDFInfo
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- CN103438682A CN103438682A CN2013103216179A CN201310321617A CN103438682A CN 103438682 A CN103438682 A CN 103438682A CN 2013103216179 A CN2013103216179 A CN 2013103216179A CN 201310321617 A CN201310321617 A CN 201310321617A CN 103438682 A CN103438682 A CN 103438682A
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- heat pump
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- pump drying
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Abstract
The invention discloses heat pump drying equipment, which comprises a heat pump drying unit and a drying tower which is connected with the heat pump drying unit. Grains in the drying tower are dried through the heat pump drying unit. The heat pump drying equipment has the advantages that no pollution is caused, no combustion emission is produced, no harm is caused to human bodies and the social benefits are good; and the energy consumption is low, the energy saving effect is remarkable, the investment return period is short, the energy-efficiency ratio of the product is generally 3-5 in grain harvesting seasons, i.e. 3-5kw of heat can be produced by inputting 1kw of power, and compared with equipment which directly burn energy or crops, the use cost is saved very greatly.
Description
Technical field
The present invention relates to agribusiness middle peasant products drying-machine group, concrete, relate to a kind of heat pump drying equipment.
Background technology
At present, the dryer that China and even the whole world mainly adopt mainly contains the method for " fuel oil-air-supply " " burn wood-air-supply " or other directly the burn energy or crops.
The unit that " fuel oil-air-supply " reaches " burn wood-air-supply " is all fuel type, can increase flue dust, CO, CO
2deng the discharge 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 national energy supply pressure to the pollution of environment." 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 heat pump drying equipment, solve the environmental pollution existed 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: heat pump drying equipment, comprise heat pump drying unit and the drying tower be 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 connected successively compressor, cross valve, condenser, device for drying and filtering, the first heating power expansion valve, dehumidification heat exchange, and described dehumidification heat exchange connects described cross valve, 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, described air circulation duct comprises the pipeline be communicated with described air inlet, and described pipeline is successively by being communicated with described drying tower after described dehumidification heat exchange and condenser, and described drying tower is positioned at the DC fan that is provided with rotation rate-controllable with the connectivity part of described heat pump drying unit.
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, in described drying tower, be provided with humidity detector, when described cereal humidity is reduced to setting value, described humidity detector transmits 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 inputs 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.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The principle schematic that Fig. 2 is refrigerant circulation loop of the present invention.
The structural representation that Fig. 3 is source pump of the present invention.
The structural representation that Fig. 4 is 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, heat pump drying equipment, comprise heat pump drying unit 1 and the drying tower 2 be 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 connected successively compressor 11, 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 cross valve 12 of described dehumidification heat exchange 16 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 be 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 to 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 is reduced to setting value, described humidity detector transmits 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, and 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 that the relative traditional combustion of Energy Efficiency Ratio during oven dry is dried 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, now surrounding air becomes 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, now surrounding air, without dehumidifying, is therefore closed dehumidification heat exchange, opens evaporimeter and carries out single drying cycle pattern.Contrary when having a humid climate, open dehumidification heat exchange, close evaporimeter and carry out the dehumidifying drying circulation pattern.
Described drying tower 2 is positioned at the DC fan 5 that is provided with rotation rate-controllable with the connectivity part of described heat pump drying unit 1, just put into the drying tower stage at cereal, now the cereal moisture content is higher, described DC fan 5 adopt little wind speed (approximately 2000 turn/per minute to 2500 turning/per minute), now give full play to the exsiccation of temperature to cereal, after DC fan 5 maintains little wind speed certain hour, now the moisture content in cereal fully enters into circulated air, water content in circulated air raises, now DC fan 5 adopt large wind speed (approximately 3500 turn/per minute to 4500 turning/per minute), utilize the increase of the circulation rate of wind, take rapidly the moisture in drying tower 2 out of, therefore by the effect of DC fan 5, can effectively reduce drying time, increase drying efficiency.
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 passed through for cereal is set in baffle plate 42, be provided with openable cover plate 41 at least one 40 top, accommodation section, 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, now the cereal in accommodation section 40 just falls 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, is convenient to effectively contact with the hot-air in environment, is convenient to the conduction of heat.
Claims (7)
1. heat pump drying equipment, comprise heat pump drying unit (1) and the drying tower (2) be 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 connected successively compressor (11), 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 be 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), described drying tower (2) is positioned at the DC fan (5) that is provided with rotation rate-controllable with the connectivity part of described heat pump drying unit (1).
2. heat pump drying equipment as claimed in claim 1, is characterized in that: in described heat pump drying unit (1) bottom, be provided with roller (17).
3. heat pump drying equipment 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. 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. pump type heat grain drying machine as claimed in claim 1, it is characterized in that: in described drying tower (2), be provided with humidity detector, when described cereal humidity is reduced to setting value, described humidity detector transmits and makes described compressor quit work.
6. 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. pump type heat grain drying machine as claimed in claim 1, it is characterized in that: described refrigerant circulation loop has two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310321617.9A CN103438682B (en) | 2013-07-29 | 2013-07-29 | Heat pump drying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310321617.9A CN103438682B (en) | 2013-07-29 | 2013-07-29 | Heat pump drying equipment |
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| Publication Number | Publication Date |
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| CN103438682A true CN103438682A (en) | 2013-12-11 |
| CN103438682B CN103438682B (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310321617.9A Active CN103438682B (en) | 2013-07-29 | 2013-07-29 | Heat pump drying equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105104522A (en) * | 2015-09-09 | 2015-12-02 | 宁波天海制冷设备有限公司 | Cereal drying machine |
| CN105248631A (en) * | 2015-11-27 | 2016-01-20 | 徐兆来 | Integrated heat-pump grain dryer |
Citations (6)
| 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 |
| CN1369050A (en) * | 1998-12-12 | 2002-09-11 | 新加坡国立大学 | Modular heat pump system for drying and air-conditioning |
| 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 |
| CN102726956A (en) * | 2012-06-15 | 2012-10-17 | 林莎莎 | Air energy dehumidification file cabinet |
| CN202973807U (en) * | 2012-12-10 | 2013-06-05 | 广州九恒新能源有限公司 | Rapid baking and dehumidification heat pump unit |
-
2013
- 2013-07-29 CN CN201310321617.9A patent/CN103438682B/en active Active
Patent Citations (6)
| 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 |
| CN1369050A (en) * | 1998-12-12 | 2002-09-11 | 新加坡国立大学 | Modular heat pump system for drying and air-conditioning |
| 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 |
| CN102726956A (en) * | 2012-06-15 | 2012-10-17 | 林莎莎 | Air energy dehumidification file cabinet |
| CN202973807U (en) * | 2012-12-10 | 2013-06-05 | 广州九恒新能源有限公司 | Rapid baking and dehumidification heat pump unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105104522A (en) * | 2015-09-09 | 2015-12-02 | 宁波天海制冷设备有限公司 | Cereal drying machine |
| CN105248631A (en) * | 2015-11-27 | 2016-01-20 | 徐兆来 | Integrated heat-pump grain dryer |
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| Publication number | Publication date |
|---|---|
| CN103438682B (en) | 2015-07-29 |
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