CN101398253B - Low temperature drying device - Google Patents
Low temperature drying device Download PDFInfo
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- CN101398253B CN101398253B CN2007100358492A CN200710035849A CN101398253B CN 101398253 B CN101398253 B CN 101398253B CN 2007100358492 A CN2007100358492 A CN 2007100358492A CN 200710035849 A CN200710035849 A CN 200710035849A CN 101398253 B CN101398253 B CN 101398253B
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- low temperature
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Abstract
The invention discloses a low temperature drying device, comprising a heat source, a liquid pump, a heat exchanger, a materiel drying room, a blower, and a liquid medium, air and corresponding connecting pipelines. The heat source comes from an air source heat pump. The liquid/air heat exchanging is finished between a liquid medium circulation loop and an air circulation loop by the heat exchanger; the liquid medium circulation loop is composed of the air source heat pump, the liquid pump, the heat exchanger and corresponding connecting pipelines, and the air circulation loop is composed of the heat exchanger, the materiel drying room, a gas drying box, the blower and corresponding connecting pipelines. The device not only can complete drying the objects at lower temperature, but also has low energy consumption, safety and environmental protection, and relatively simple structure.
Description
Technical field
The present invention relates to the material or the goods of on-progressive motion are carried out dry device, especially a kind of low temperature drying device.
Background technology
When crops such as some specialities such as vegetables, flowers and firework medicine etc. are carried out drying, require the temperature of hothouse can not be too high, must not be higher than 70 ℃ in order to safety as firework pharmaceutical drying temperature; The baking temperature of vegetables preferably near normal temperature to guarantee mouthfeel and nutrition.Though it is drying equipment of the prior art is of a great variety, also quite limited to the professional equipment exploitation of this aspect.And because the energy in thermal source and the hot-air fully is not used, all there are problems such as the higher or thermal efficiency of energy consumption is lower in various degree in existing device, causes the operation of applying unit to drop into all higher.Improved the production cost of applying unit, wasted resource, environment has been damaged; Simultaneously, existing equipment does not consider a problem from actual needs, and device structure is all very complicated comparatively speaking, has increased the equipment input of applying unit.
Summary of the invention
Technical problem to be solved by this invention is, a kind of low temperature drying device is provided, and not only finish the drying to object under lower temperature, and energy consumption is low, safety and environmental protection, and structure is also simple relatively.
In order to realize the foregoing invention purpose, the technical solution used in the present invention is that a kind of low temperature drying device comprises thermal source, liquid pump, heat exchanger, dry materials chamber, blower fan, liquid medium, air dielectric and corresponding connecting pipe.Described thermal source adopts air source heat pump.Constitute the liquid medium closed circuit by air source heat pump, liquid pump, heat exchanger and corresponding connecting pipe, constitute air circulation loop by heat exchanger, dry materials chamber, blower fan and corresponding connecting pipe, finish the liquid/air heat exchange by heat exchanger between two loops.
As preferred embodiment, the liquid medium closed circuit returns air source heat pump again by air source heat pump to the liquid pump to heat exchanger, and each equipment is connected and composed by corresponding pipeline successively; The air dielectric closed circuit by heat exchanger to blower fan to the dry materials chamber Returning heat-exchanger again, each equipment is connected and composed by corresponding pipeline successively.
In the present invention, baking temperature also must increase the gas drying box in the device below 45 ℃ the time, with the function of better realization dehumidifying, and reduces the consumption of the energy.When increasing the gas drying box, the constituted mode of apparatus of the present invention is: constitute the liquid medium closed circuit by air source heat pump, liquid pump, heat exchanger and corresponding connecting pipe, constitute air circulation loop by heat exchanger, dry materials chamber, gas drying box, blower fan and corresponding connecting pipe, finish the liquid/air heat exchange by heat exchanger between two loops.
As preferred embodiment, the liquid medium closed circuit returns air source heat pump again by air source heat pump to the liquid pump to heat exchanger, and each equipment is connected and composed by corresponding pipeline successively; The air dielectric closed circuit by heat exchanger to the gas drying box to blower fan to the dry materials chamber Returning heat-exchanger again, each equipment is connected and composed by corresponding pipeline successively.
Above-mentioned each device forms the order of connection of closed circuit or distortion or the selection that there are other in mode, but all belongs to technology well known in the art, no longer describes in detail.
Based on low-temperature characteristics of the present invention, in order to reach the effect of environmental protection and safety, this device thermal source adopts air source heat pump heating liquid medium, after heat exchanger is finished the liquid/air heat exchange, heated air enters the dry materials chamber, the damp-heat air that flows out from the dry materials chamber enters heat exchanger once more and reheats after the gas drying box becomes heated dry air, reaches dehumidifying and purpose of energy saving.Promptly under the effect of liquid pump and blower fan, liquid medium and air dielectric circulate use in the closed circuit pipeline, have made full use of the waste heat of two media, have effectively improved the utilization ratio of heat energy.Baking temperature also can not adopt the gas drying box to carry out drying at 45 ℃ and when above.
Temperature control of the present invention can be adopted artificial visually examine's thermometer, and the switch of manual operation air source heat pump is realized; Also can adopt long-range temperature control device or automatic temperature control equipment.These all are quite ripe known technologies, repeat no more.
In one embodiment of the present invention, can also have additional the auxiliary electro-heat device in the described air circulation loop.
As the preferred embodiments of the present invention, described dry materials chamber air inlet is located at the sidewall near the bottom, and air outlet is located at another sidewall on opposite.Being beneficial to air flows.
In order to draw materials convenient and to reduce cost, in specific embodiments of the invention, described liquid medium adopts water or conduction oil respectively.
In one embodiment of the present invention, described gas drying box adopts the drier dehumidifying, and drier adopts quick lime (CaO), and not only wide material sources are with low cost, and the heat of quick lime and water reaction generation can also heat by dehumidified air; Simultaneously, the calcium hydroxide (Ca (OH) of quick lime and water reaction generation
2) also be widely used in other industry.
The drier of described gas drying box device also can adopt anhydrous calcium chloride (CaCl
2), the calcium chloride hexahydrate that itself and water reaction back generate is reduced to anhydrous calcium chloride behind the thermal dehydration, can use repeatedly.
In the above-mentioned embodiment of the present invention, the mode that described gas drying box can adopt electrical heating to dehumidify is removed the moisture in the drier.
In order further to make full use of the waste heat of liquid heat-exchange medium, as an improvement of the present invention, in the described liquid medium closed circuit, the corresponding connecting pipe that the liquid medium automatic heat-exchanger returns between air source heat pump is indoor through dry materials.
As above-mentioned improved optimum embodiment, the corresponding connecting pipe that described liquid medium automatic heat-exchanger returns between air source heat pump highly is not more than 3/4ths of whole height in the hothouse in indoor being provided with of dry materials.
In order further to reduce the loss of energy, as another kind of improvement the of the present invention, bottom surface, described dry materials chamber, sidewall or end face are established heat-insulation layer.
As above-mentioned improved further improvement, described end face heat-insulation layer is made of ventilative insulation material (as sponge, waterproof thermal-insulated film etc.).The ascension that makes progress of water vapour in the hothouse can be passed insulation material and be overflowed naturally, and dry indoor temperature reaches 45 and spends and when above, the hydrofuge effect is obvious.
When described end face heat-insulation layer is made of ventilative insulation material, can also add the hydrofuge layer on the end face heat-insulation layer, described hydrofuge layer is a space that appropriateness is open, can make end face heat-insulation layer top keep uniform temperature, with the water recovery that prevents to overflow; Can not hinder water vapour to spread to the external world yet.Described hydrofuge layer can also be provided with ventilating fan.
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is an embodiment of the invention structural principle schematic diagram
Fig. 2 is a dry materials cell structure schematic diagram
The specific embodiment
Referring to Fig. 1, constitute liquid medium closed circuit 1 by air source heat pump 101, liquid pump 102, heat exchanger 2 and corresponding connecting pipe 103, constitute 1,3 in gas medium closed circuit 3, two loops by gas drying box 303, blower fan 302 and the corresponding connecting pipe 304 of heat exchanger 2, dry materials chamber 301, device quick lime drier and finish the liquid/gas heat exchange by heat exchanger 2.In liquid medium closed circuit 1, liquid medium automatic heat-exchanger 2 returns the corresponding connecting pipe of 101 of air source heat pumps through in the dry materials chamber 301.
Referring to Fig. 1 and Fig. 2, under blower fan 302 effects, the high temperature heated dry air enters dry materials chamber 301 along pipeline 304 from the air inlet 38 near the sidewall of bottoms, the low temperature damp-heat air from the air outlet 39 that is located at dry materials chamber 301 another sidewalls of opposite along pipeline 304 Returning heat-exchangers 2.
In accompanying drawing 2 illustrated embodiments, the corresponding connecting pipe that liquid medium automatic heat-exchanger 2 returns 101 of air source heat pumps highly equals 3/4ths of whole height in the hothouse 301 through part 32 being provided with in hothouse 301 of dry materials chamber 301.
In accompanying drawing 2 illustrated embodiments, heat-insulation layer 37 is established on dry materials chamber 301 sidewalls and ground, and end face heat-insulation layer 36 is made of ventilative insulation material (as sponge, waterproof thermal-insulated film etc.).Water vapours in the hothouse 301 are subjected to the heat effect ascension that makes progress, passing heat-insulation layer 36 overflows naturally, temperature reach 45 degree and when above in the hothouse 301, the hydrofuge effect is obvious, under the situation of the functions/drying of using gases drying box not, do not influence the realization (related data is seen attached list) of the object of the invention.But when carrying out drying, then must enable the gas drying box with the assurance effect on moisture extraction at the material that some baking temperatures is required lower (45 degree are following) (as flowers, chemical products that fusing point is lower etc.).
In accompanying drawing 2 illustrated embodiments, also be provided with hydrofuge layer 34 on end face heat-insulation layer 36, hydrofuge layer 34 is provided with ventilating fan 33,35.
Referring to following subordinate list, adopt the present embodiment device, under 25 ℃ environment temperature, 109 cubic metres of dry materials chamber volumes, the material drying, the dehydrating amount of every power consumption 1kwh at 1.664kg between the 1.705kg.And in the traditional theory data, under 30 ℃ of environment temperatures, the dehydrating amount of every power consumption 1kwh is at 1.484kg.With data contrast of the present invention, the present invention has huge energy-saving effect as can be seen.
| Sequence number | Environment temperature | The material gross weight | High dry temperature | Dry moisture content weightlessness | Drying time | Total power consumption | The average dehydrating amount of every power consumption 1kwh |
| 1、 | 25℃ | 1015kg | 58℃ | 198kg | 9.6h | 119kwh | 1.664kg |
| 2、 | 25℃ | 1360kg | 58℃ | 225kg | 11.5h | 132kwh | 1.705kg |
| 3、 | 25℃ | 1005kg | 45℃ | 197kg | 15.5h | 116kwh | 1.698kg |
Other it should be noted that, in order more clearly to verify the invention effect, on show experimental data and all under the situation of not enabled gas drying box, carry out.(drier adopts anhydrous calcium chloride (CaCl enabling the gas drying box
2)) situation under, other experimental conditions all do not change, and have shortened 15-20% drying time, total power consumption has reduced 15-20%; And drier is when adopting quick lime, because the heat of quick lime and water reaction generation has stronger auxiliary heating function, energy-saving effect is more obvious.
In sum, the present invention mainly adopts the mode of medium circulation to improve the utilization ratio of heat energy, and be aided with multiple other means, has fully realized the goal of the invention of low temperature drying, environmental protection and energy saving.Its apparatus structure etc. has the various deformation or the selection of known manner, but so long as adopted the low temperature drying device of the mode of heating medium circulation, all falls into protection scope of the present invention.
Claims (11)
1. low temperature drying device, comprise thermal source, liquid pump, heat exchanger, dry materials chamber, blower fan, liquid medium, air dielectric and corresponding connecting pipe, it is characterized in that, described thermal source adopts air source heat pump, constitute the liquid medium closed circuit by air source heat pump, liquid pump, heat exchanger and corresponding connecting pipe, constitute the air dielectric closed circuit by heat exchanger, dry materials chamber, blower fan and corresponding connecting pipe, finish the liquid/air heat exchange by heat exchanger between two loops.
2. a kind of low temperature drying device as claimed in claim 1 is characterized in that, described liquid medium closed circuit returns air source heat pump again by air source heat pump to the liquid pump to heat exchanger, and each equipment connects and composes with corresponding pipeline successively; The air dielectric closed circuit by heat exchanger to blower fan to the dry materials chamber Returning heat-exchanger again, each equipment connects and composes with corresponding pipeline successively.
3. a kind of low temperature drying device as claimed in claim 1 is characterized in that, described dry materials chamber air inlet is located at the sidewall near the bottom, and air outlet is located at another sidewall on opposite.
4. a kind of low temperature drying device as claimed in claim 1 is characterized in that, described liquid medium adopts water or conduction oil.
5. a kind of low temperature drying device as claimed in claim 1, it is characterized in that, in the described liquid medium closed circuit, the corresponding connecting pipe that the liquid medium automatic heat-exchanger returns between air source heat pump is indoor through dry materials, and the corresponding connecting pipe that described liquid medium automatic heat-exchanger returns between air source heat pump highly is not more than 3/4ths of whole height in the hothouse in indoor being provided with of dry materials.
6. a kind of low temperature drying device as claimed in claim 1 is characterized in that, the heat-insulation layer that the end face setting of described dry materials chamber is made of ventilative insulation material.
7. a kind of low temperature drying device as claimed in claim 6 is characterized in that, described end face heat-insulation layer is provided with the hydrofuge layer of band ventilating fan.
8. as each described a kind of low temperature drying device of claim 1 to 7, it is characterized in that, be provided with the auxiliary electro-heat device in the described air dielectric closed circuit.
9. low temperature drying device, comprise thermal source, liquid pump, heat exchanger, dry materials chamber, blower fan, liquid medium, air dielectric and corresponding connecting pipe, it is characterized in that, described thermal source adopts air source heat pump, constitute the liquid medium closed circuit by air source heat pump, liquid pump, heat exchanger and corresponding connecting pipe, constitute the air dielectric closed circuit by heat exchanger, dry materials chamber, gas drying box, blower fan and corresponding connecting pipe, finish the liquid/air heat exchange by heat exchanger between two loops.
10. a kind of low temperature drying device as claimed in claim 9 is characterized in that, described liquid medium closed circuit returns air source heat pump again by air source heat pump to the liquid pump to heat exchanger, and each equipment connects and composes with corresponding pipeline successively; The air dielectric closed circuit by heat exchanger to the gas drying box to blower fan to the dry materials chamber Returning heat-exchanger again, each equipment connects and composes with corresponding pipeline successively.
11. a kind of low temperature drying device as claimed in claim 9 is characterized in that, described gas drying box adopts the drier dehumidifying, and described drier adopts quick lime (CaO) or anhydrous calcium chloride (CaCl
2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100358492A CN101398253B (en) | 2007-09-30 | 2007-09-30 | Low temperature drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100358492A CN101398253B (en) | 2007-09-30 | 2007-09-30 | Low temperature drying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101398253A CN101398253A (en) | 2009-04-01 |
| CN101398253B true CN101398253B (en) | 2010-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100358492A Expired - Fee Related CN101398253B (en) | 2007-09-30 | 2007-09-30 | Low temperature drying device |
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| CN (1) | CN101398253B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914136A (en) * | 2012-11-13 | 2013-02-06 | 江苏海大印染机械有限公司 | Simple air uniform and drying device for air outlet of drying machine |
| CN103256789B (en) * | 2013-05-28 | 2015-07-15 | 河南理工大学 | Device and method of drying frozen partial material |
| CN104012636B (en) * | 2014-05-20 | 2017-07-28 | 浙江海洋学院 | Circulating marine product drying equipment |
| CN110817994B (en) * | 2019-10-30 | 2021-03-02 | 西安交通大学 | Water distillation system and method |
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- 2007-09-30 CN CN2007100358492A patent/CN101398253B/en not_active Expired - Fee Related
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Granted publication date: 20101027 Termination date: 20200930 |