CN101614467A - A kind of hot air drying system - Google Patents
A kind of hot air drying system Download PDFInfo
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- CN101614467A CN101614467A CN200810129364A CN200810129364A CN101614467A CN 101614467 A CN101614467 A CN 101614467A CN 200810129364 A CN200810129364 A CN 200810129364A CN 200810129364 A CN200810129364 A CN 200810129364A CN 101614467 A CN101614467 A CN 101614467A
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- hothouse
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Abstract
The invention discloses a kind of hot air drying system, comprise air source heat pump, condenser fan and hothouse, air source heat pump mainly is made up of evaporimeter, compressor, condenser, throttling arrangement, and connects with the working medium circulating line in regular turn; Form with circulated air between described condenser fan and the hothouse is carried out air exchange.Adopt technical scheme of the present invention,, reduce even do not have a disposal of pollutants with the novel heat source energy savings of air source heat pump as drying device; Hot air circulation has realized hot all the more more, has significantly reduced heat energy loss.And having improved the ability to work of air source heat pump drying system from general equilibrium ground, two aspects of input and output, normally even running of system, Energy Efficiency Ratio obtain bigger raising.Hot blast temperature provided by the invention is higher, makes the range of application of air source heat pump obtain great expansion, and energy-saving and emission-reduction are had positive effect.
Description
Technical field
The present invention relates to a kind of hot air drying system, especially adopt the hot air drying system of air source heat pump.
Background technology
The drying device kind is numerous, from energy-conservation angle, (with regard to heating, the ratio of heating capacity and input power is defined as the cycle performance coefficient COP of heat pump, under identical operating mode to require its heater that higher Energy Efficiency Ratio COP value is arranged, the efficient of this system of the big more explanation of its ratio is high more energy-conservation more), and material drying device is long service time, and the hot blast requirement is bigger, and temperature requirement is higher, cause input power bigger, higher Energy Efficiency Ratio is urgent current demand.
But existing its thermal source of drying device all adopts fire coal (oil) boiler or Electric heating, and its main drawback is that Energy Efficiency Ratio is too low, the waste resource, and waste residue, waste gas that coal (oil) burning produces pollute environment; And because the energy in thermal source or 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 equipment, causes the operation of applying unit to drop into all higher.
Air source heat pump mainly is made up of several parts such as compressor, evaporimeter, throttling arrangement, condenser, working medium circulating lines.Its adopts electric energy to drive according to contrary Carnot cycle principle, by heat-transfer working medium the low grade heat energy that can't be utilized in the air is effectively absorbed, and it is promoted to available high-grade heat energy is used.Its course of work: 1. heat-transfer working medium enters evaporimeter, and working medium heat absorption evaporation in evaporimeter entered compressor after this moment, working medium absorbed heat from low-temperature heat source; 2. after the compression of working medium process compressor, the intensification, the working medium that becomes high temperature, high pressure is discharged compressor; 3. working medium enters condenser, other media of that part of heat transferred that heat that will absorb from evaporimeter in condenser and the power consumption of compressor own are produced; 4. enter evaporimeter once more, periodic duty constantly according to this after the high-pressure working medium process throttling arrangement throttling step-down.Also be provided with servicing unit fluid reservoir and filter in some air source heat pump, generally install between condenser and the throttling arrangement or between evaporimeter and the compressor, fluid reservoir is mainly used in regulates the circulation of working medium in closed system,, can not be provided with comparatively under the ideal situation in the design matching of equipment such as evaporimeter and condenser yet; Filter is mainly used in and filters issuable impurity in the working medium, and the long-term stability operation that keeps system is helped out.
Is that air conditioner heats with air source heat pump as the typical case of thermal source utilization, it is to be purpose with the body sense comfort level of regulating health, during 15 ℃ of environment temperatures, its working medium temperature that enters condenser is about 67 ℃, pass through condenser, air heats the air inlet wind-warm syndrome mostly below 20 ℃ indoor with the circulated air form, and indoor maximum temperature can only reach about 30 ℃.The COP value of existing aircondition is about 3.0 during 15 ℃ of environment temperatures under the state of heating.
Summary of the invention
In order to solve above-mentioned drawback, the technical problem to be solved in the present invention is, a kind of energy savings is provided, and the drying device of environmentally safe requires it to have higher Energy Efficiency Ratio and lower operation cost.In order to address the above problem, the technical solution used in the present invention is that a kind of hot air drying system comprises air source heat pump, condenser fan and hothouse, air source heat pump mainly is made up of evaporimeter, compressor, condenser, throttling arrangement, and connects with the working medium circulating line in regular turn; Form with circulated air between described condenser fan and the hothouse is carried out air exchange.
As of the present invention a kind of preferred, described hothouse top can be provided with the hydrofuge passage.
Hot blast enters hothouse and adds thermal material, and the moisture in the material becomes the water vapour ascension that makes progress, and passes the hydrofuge passage at hothouse top and overflows, and realizes dry purpose.Has advantages of saving energy and reducing emission with air source heat pump as the novel heat source of drying device; Hot air circulation has realized hot all the more more, and has significantly reduced heat energy loss.
But existing heat pump apparatus of air source heating efficiency is limited, can satisfy the requirement of dried material under the situation only less in scale, that baking temperature is lower.By systematic research, we find that existing apparatus can not satisfy the requirement of dried material, mainly is the restriction that is subjected to following condition:
One, working medium is carried out the limited in one's ability of heat temperature raising: (be as the criterion with rated value) ratio is at 3.8-4.8m down together for the evaporimeter heat exchange area of existing apparatus and compressor power input
2Between/the kw, the heat energy that absorbs from environment is limited.Temperature when working medium enters condenser can only reach about 67 ℃, and required heat of dried material and temperature can not be provided.
Two, output heat energy is limited in one's ability: the condenser heat exchange area that prior art adopts is less, and the ratio of its condenser heat exchange area and compressor power input is 2.5-3.4m
2About/kw, the limited in one's ability and heat exchange efficiency of taking away heat is lower.Strengthening under input or the environment temperature condition with higher; the heat that produces can not be exported timely and effectively; cause duplex matter system internal temperature, hypertonia; compressor is operation continuously under high pressure conditions; overvoltage protection frequently occurring shuts down; system can not normally move, and if things go on like this also can cause damage to compressor.
For this reason, as of the present invention a kind of preferred, the span of the evaporimeter heat exchange area of described air source heat pump and the ratio of compressor power input is at 5.4-16m
2Between/the kw, the span of the condenser heat exchange area of described air source heat pump and the ratio of compressor power input is at 4.0-12m
2Between/the kw.
Preferred by test of many times, to add thermal effect, take all factors into consideration problems such as manufacturing process feasibility and production cost, selectivity increases the heat exchange area of evaporimeter, during 15 ℃ of environment temperatures, the working medium temperature that enters condenser can be brought up to 86-110 ℃, power pressure improves simultaneously, its flow velocity is accelerated, and heat exchange efficiency also is improved; The corresponding supporting raising of condenser heat exchange area, its heat-carrying capacity increases, and can be efficiently the high temperature heat of working medium be passed to air.The air outlet wind-warm syndrome can reach more than 80 ℃, and Energy Efficiency Ratio can reach more than 4.0.Simultaneously, in the preferable range of the technical program, realized that preferably working medium heats up and the balance of output heat energy.When improving temperature, guaranteed the even running of system.
As the specific embodiment of the present invention, the hydrofuge passage on described hothouse top can be that aperture or the hothouse top offered at the hothouse top are made of ventilative insulation material (as sponge, waterproof thermal-insulated film etc.).
In order further to reduce the loss of energy, as another kind of improvement the of the present invention, described hothouse bottom surface, sidewall or end face are established heat-insulation layer.
In order to realize the hot air circulation between described condenser fan and the hothouse, can adopt following dual mode:
One, described condenser and blower fan place outside the hothouse, are provided with air circulation duct between described condenser fan and the hothouse, connect the air outlet and the hothouse air inlet of condenser fan, and connect the air outlet and the condenser fan air inlet of hothouse.
As the improvement of aforesaid way, the air circulation duct between described condenser fan and the hothouse is provided with air dry-set.
Another kind as aforesaid way improves, and can also have additional the auxiliary electro-heat device in the described air circulation duct.
Two, described condenser and blower fan place in the hothouse, and the air intake and the air-out of condenser fan are all finished in hothouse.
In the dual mode, the air inlet place of described condenser fan can also be provided with from the passage of external environment condition air intake, makes the hothouse internal gas pressure be malleation.
Temperature control of the present invention can be adopted the artificial visually examine, and the switch of manual operation air source heat pump is realized; Also can adopt automatic temperature control equipment or long-range temperature control device.These all are quite ripe known technologies, repeat no more.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is that condenser of the present invention and blower fan place the outer structure principle chart of hothouse;
Fig. 2 is that the hydrofuge passage is the hothouse cross-sectional view of aperture;
Fig. 3 is the hothouse cross-sectional view that the top is made of ventilative insulation material;
Fig. 4 is that condenser of the present invention and blower fan place the structure principle chart in the hothouse.
The specific embodiment
Referring to Fig. 1, a kind of hot air drying system of the present invention comprises that air source heat pump, condenser fan 2 and top are provided with the hothouse 5 of hydrofuge passage, air source heat pump mainly is made up of evaporimeter 4, compressor 3, condenser 1, throttling arrangement 6, and connects with the working medium circulating line in regular turn; Described condenser 1 and blower fan 2 place outside the hothouse 5, be provided with air circulation duct between described condenser fan 2 and the hothouse 5, connect the air outlet 7 of condenser fan 2 and the air inlet 12 of hothouse 5, and connect the air outlet 11 of hothouse 5 and the air inlet 8 of condenser fan 2.
In conjunction with Fig. 2, the air of described condenser 1 heating forms hot blast under the effect of condenser fan 2.From the hot blast distribution layer 14 that enters hothouse 5 near the air inlet 12 of hothouse 5 bottoms, equally distributed air port 13 is evenly distributed in hot blast in the hothouse 5 material is carried out drying hot blast on the hot blast distribution layer 14 along pipeline.The air that also has certain waste heat is heated by condenser 1 once more by air outlet 11 is back to condenser fan 2 along pipeline air inlet 8 again, realizes circulation.Moisture in the material becomes the water vapour ascension that makes progress, and passes the hydrofuge passage that the aperture 9 offered at hothouse 5 tops constitutes and overflows, and realizes dry purpose.
Referring to Fig. 3, be that with last routine difference the hydrofuge passage at described hothouse 5 tops is made of ventilative heat-insulation layer 10 (sponge, waterproof thermal-insulated film all can).
Referring to Fig. 4, compare with Fig. 1 example, its difference is that condenser 1 and blower fan 2 place in the hothouse 5, the air intake of condenser fan 2 and air-out are all finished circulation in hothouse 5.Hothouse 5 no longer is provided with inlet and outlet, also no longer is provided with the circulated air pipeline.
In order to further specify the invention effect, under 15 ℃ of environment temperatures, the heating of employing circulated air, working medium adopts freon, according to the following table data evaporimeter and condenser are set, used compressor rated power 4.66kw (compressor power input contains evaporator fan power in the table) also measures its technique effect, and it the results are shown in following table 1:
As shown in Table 1, utilize this device to add hot-air, under 15 ℃ environment temperature, during 70 ℃ of air outlet wind-warm syndrome, its Energy Efficiency Ratio is about 3.8.The air inlet wind-warm syndrome is when 50 ℃ of left and right sides, and the air outlet wind-warm syndrome can improve 14-18 ℃, and its Energy Efficiency Ratio can reach more than 4.0; During air outlet wind-warm syndrome to 75 ℃, its Energy Efficiency Ratio still can reach about 3.3.
Table 1
| Sequence number | Compressor power input (kw) | Evaporimeter heat exchange area (m 2) | Condenser heat exchange area (m 2) | The air inlet wind-warm syndrome (℃) | Air outlet air quantity (m 3/h) | Energy Efficiency Ratio | The air outlet wind-warm syndrome (℃) |
| ??1 | ??4.96 | ??32.6 | ??28.5 | ??47.0 | ??3200 | ??4.04 | ??65.0 |
| ??2 | ??4.96 | ??32.6 | ??28.5 | ??53.0 | ??3200 | ??3.82 | ??70.0 |
| ??3 | ??4.96 | ??32.6 | ??28.5 | ??60.0 | ??3200 | ??3.37 | ??75.0 |
| ??4 | ??4.96 | ??32.6 | ??28.5 | ??65.5 | ??3200 | ??3.26 | ??80.0 |
| ??5 | ??4.96 | ??27.4 | ??21.0 | ??50.0 | ??3200 | ??3.14 | ??64.0 |
| ??6 | ??4.96 | ??28.4 | ??23.0 | ??50.0 | ??3200 | ??3.36 | ??65.0 |
| ??7 | ??4.96 | ??30.4 | ??25.0 | ??50.0 | ??3200 | ??3.58 | ??66.0 |
| ??8 | ??4.96 | ??39.2 | ??37.2 | ??49.0 | ??3200 | ??4.04 | ??67.0 |
| ??9 | ??4.96 | ??58.2 | ??47.5 | ??49.0 | ??3100 | ??3.48 | ??65.5 |
| ??10 | ??4.96 | ??67.5 | ??53.6 | ??49.0 | ??3100 | ??3.35 | ??64.5 |
Adopt technical scheme of the present invention,, reduce even do not have a disposal of pollutants with the novel heat source energy savings of air source heat pump as drying device; Hot air circulation has realized hot all the more more, has significantly reduced heat energy loss.And improved the ability to work of air source heat pump drying system from general equilibrium ground, two aspects of input and output, under the constant situation of air quantity, its leaving air temp is largely increased, and normally even running of system, Energy Efficiency Ratio obtain bigger raising, has realized goal of the invention fully.Hot blast temperature provided by the invention is higher, makes the range of application of air source heat pump obtain great expansion, and energy-saving and emission-reduction are had positive effect.
The above-mentioned embodiment that the present invention describes only is for technical scheme of the present invention clearly is described, and can not be interpreted as the present invention is made any restriction.The present invention has known multiple alternative or distortion in the present technique field, under the prerequisite that does not break away from essential meaning of the present invention, all fall into protection scope of the present invention.
Claims (10)
1. a hot air drying system comprises air source heat pump, condenser fan and hothouse, and air source heat pump mainly is made up of evaporimeter, compressor, condenser, throttling arrangement, and connects with the working medium circulating line in regular turn; Form with circulated air between described condenser fan and the hothouse is carried out air exchange.
2. a kind of hot air drying system as claimed in claim 1 is characterized in that, the span of the evaporimeter heat exchange area of described air source heat pump and the ratio of compressor power input is at 5.4-16m
2Between/the kw, the span of the condenser heat exchange area of described air source heat pump and the ratio of compressor power input is at 4.0-12m
2Between/the kw.
3. a kind of hot air drying system as claimed in claim 1 or 2 is characterized in that, described hothouse top is provided with the hydrofuge passage.
4. a kind of hot air drying system as claimed in claim 3 is characterized in that, the hydrofuge passage on described hothouse top is that aperture or the hothouse top offered at the hothouse top are made of ventilative insulation material.
5. a kind of hot air drying system as claimed in claim 1 or 2 is characterized in that, described hothouse bottom surface, sidewall or end face are established heat-insulation layer.
6. a kind of hot air drying system as claimed in claim 1 or 2, it is characterized in that, described condenser and blower fan place outside the hothouse, be provided with air circulation duct between described condenser fan and the hothouse, the air outlet and the hothouse air inlet that connect condenser fan, and the air outlet and the condenser fan air inlet of connection hothouse.
7. a kind of hot air drying system as claimed in claim 6 is characterized in that the air circulation duct between described condenser fan and the hothouse is provided with air dry-set.
8. a kind of hot air drying system as claimed in claim 6 is characterized in that, is provided with the auxiliary electro-heat device in the air circulation duct between described condenser fan and the hothouse.
9. a kind of hot air drying system as claimed in claim 1 or 2 is characterized in that described condenser and blower fan place in the hothouse.
10. a kind of hot air drying system as claimed in claim 1 or 2 is characterized in that, the air inlet place of described condenser fan is provided with the passage from the external environment condition air intake.
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| CN2008101293644A CN101614467B (en) | 2008-06-27 | 2008-06-27 | Hot air drying system |
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| CN2008101293644A CN101614467B (en) | 2008-06-27 | 2008-06-27 | Hot air drying system |
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| CN101614467B CN101614467B (en) | 2011-11-02 |
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| CN103727761A (en) * | 2013-12-17 | 2014-04-16 | 天津市国民制药机械有限公司 | High-temperature heat pump spiral dryer |
| CN104054799A (en) * | 2014-06-09 | 2014-09-24 | 浙江海洋学院 | Energy-saving drier |
| CN106369943A (en) * | 2016-08-26 | 2017-02-01 | 安徽尧龙竹木制品有限公司 | Hot-air-circulating energy-saving drying room for multi-color mao bamboo strips |
| CN107462063A (en) * | 2017-08-21 | 2017-12-12 | 烟台明辉热泵节能科技有限公司 | Heat pump drying system and furnace drying method |
| CN107576195A (en) * | 2017-09-06 | 2018-01-12 | 同方人工环境有限公司 | A kind of warming heat pump dehumidification drying device |
| CN107726832A (en) * | 2017-10-31 | 2018-02-23 | 佛山市南海聚腾环保设备有限公司 | A kind of efficient medicinal material drying system of air heat source and thermal pump |
| CN107726837A (en) * | 2017-10-31 | 2018-02-23 | 佛山市南海聚腾环保设备有限公司 | A kind of air heat source and thermal pump drying materials system |
| CN108844344A (en) * | 2018-08-30 | 2018-11-20 | 桂林电子科技大学 | Rare earth dry kiln |
| CN109210919A (en) * | 2017-07-05 | 2019-01-15 | 同方人工环境有限公司 | A kind of recovery type heat pump drying system |
| CN110360832A (en) * | 2019-07-01 | 2019-10-22 | 昆明理工大学 | A kind of air source heat pump drying system and method for high return air temperature |
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| IT1160889B (en) * | 1978-10-26 | 1987-03-11 | Berti Furic | DRYING SYSTEM PARTICULARLY FOR TIMBER |
| DE4304226C5 (en) * | 1993-02-12 | 2004-03-04 | Miele & Cie. Kg | Condensation clothes dryer with a heat pump |
| DE4434205A1 (en) * | 1994-08-31 | 1996-03-07 | Joerg Sdrojewski | Laundry dryer with laundry drum |
| CN2593142Y (en) * | 2003-01-06 | 2003-12-17 | 张璧光 | Multifunctional heat pump drier |
| CN2681063Y (en) * | 2003-12-02 | 2005-02-23 | 于金镒 | Heat pump type drying cabinet |
| CN100575842C (en) * | 2004-02-19 | 2009-12-30 | 松下电器产业株式会社 | Drying device and method of operating thereof |
| CN2835913Y (en) * | 2005-08-25 | 2006-11-08 | 何翔 | Heat pump tower type vacuum drying apparatus |
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| CN103727761A (en) * | 2013-12-17 | 2014-04-16 | 天津市国民制药机械有限公司 | High-temperature heat pump spiral dryer |
| CN104054799A (en) * | 2014-06-09 | 2014-09-24 | 浙江海洋学院 | Energy-saving drier |
| CN106369943A (en) * | 2016-08-26 | 2017-02-01 | 安徽尧龙竹木制品有限公司 | Hot-air-circulating energy-saving drying room for multi-color mao bamboo strips |
| CN106369943B (en) * | 2016-08-26 | 2019-03-29 | 安徽尧龙竹木制品有限公司 | The energy-saving drying chamber of polychrome wool top hot air circulation |
| CN109210919A (en) * | 2017-07-05 | 2019-01-15 | 同方人工环境有限公司 | A kind of recovery type heat pump drying system |
| CN107462063A (en) * | 2017-08-21 | 2017-12-12 | 烟台明辉热泵节能科技有限公司 | Heat pump drying system and furnace drying method |
| CN107576195A (en) * | 2017-09-06 | 2018-01-12 | 同方人工环境有限公司 | A kind of warming heat pump dehumidification drying device |
| CN107726832A (en) * | 2017-10-31 | 2018-02-23 | 佛山市南海聚腾环保设备有限公司 | A kind of efficient medicinal material drying system of air heat source and thermal pump |
| CN107726837A (en) * | 2017-10-31 | 2018-02-23 | 佛山市南海聚腾环保设备有限公司 | A kind of air heat source and thermal pump drying materials system |
| CN108844344A (en) * | 2018-08-30 | 2018-11-20 | 桂林电子科技大学 | Rare earth dry kiln |
| CN110360832A (en) * | 2019-07-01 | 2019-10-22 | 昆明理工大学 | A kind of air source heat pump drying system and method for high return air temperature |
| CN110360832B (en) * | 2019-07-01 | 2021-01-01 | 昆明理工大学 | Air source heat pump drying system and method for high return air temperature |
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