CN201215432Y - Wind quantity variable roller type up-supply down-return medium high temperature heat pump dryer - Google Patents
Wind quantity variable roller type up-supply down-return medium high temperature heat pump dryer Download PDFInfo
- Publication number
- CN201215432Y CN201215432Y CNU2008200813149U CN200820081314U CN201215432Y CN 201215432 Y CN201215432 Y CN 201215432Y CN U2008200813149 U CNU2008200813149 U CN U2008200813149U CN 200820081314 U CN200820081314 U CN 200820081314U CN 201215432 Y CN201215432 Y CN 201215432Y
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- China
- Prior art keywords
- heat pump
- heat
- air
- return air
- rotating cylinder
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- Expired - Fee Related
Links
- 238000001035 drying Methods 0.000 claims abstract description 31
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 13
- 239000010935 stainless steel Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 8
- 238000005057 refrigeration Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000005485 electric heating Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
- 241001122767 Theaceae Species 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 4
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 4
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- FYIRUPZTYPILDH-UHFFFAOYSA-N 1,1,1,2,3,3-hexafluoropropane Chemical compound FC(F)C(F)C(F)(F)F FYIRUPZTYPILDH-UHFFFAOYSA-N 0.000 description 2
- NSGXIBWMJZWTPY-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropane Chemical compound FC(F)(F)CC(F)(F)F NSGXIBWMJZWTPY-UHFFFAOYSA-N 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- 244000028550 Auricularia auricula Species 0.000 description 2
- 235000000023 Auricularia auricula Nutrition 0.000 description 2
- 241000756137 Hemerocallis Species 0.000 description 2
- 240000007049 Juglans regia Species 0.000 description 2
- 235000009496 Juglans regia Nutrition 0.000 description 2
- 244000131316 Panax pseudoginseng Species 0.000 description 2
- 235000003181 Panax pseudoginseng Nutrition 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 239000009759 San-Chi Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000001282 iso-butane Substances 0.000 description 2
- 235000013847 iso-butane Nutrition 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 235000014571 nuts Nutrition 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N sec-butylidene Natural products CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- 235000020234 walnut Nutrition 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to a variable air volume roller type up-feed low-reflux high temperature heat pump dryer, comprising a heat pump working medium circulation loop, an air internal circulation loop and an electric drum. The dryer is in the form of a rectangle cabinet, the outer wallboard adopts a sandwich thermal insulation wallboard (8), a porous round drum (4) for arranging objects is arranged at one side, the upper part and the lower part of the drum (4) are respectively provided with an air feed room and an air return room which are separated by an air return room stainless steel porous baffle plate (6) and an air feed room stainless steel porous baffle plate (7), and a variable air volume low-noise fan (5) is mounted in the air return room at the lower part. The heating performance of the dryer reaches 3.8 and the dryer can save electricity of 50% at least more than the electric heating dryers, and has adjustable drying ability according to the object kinds, water contents and the demand on dry time.
Description
Technical field
The utility model relates to and send down return air moderate and high temperature heat drying machine on a kind of variable air rate drum-type, promptly use dry machine, the apparatus of low boiling working fluid steam compression heat pump, heat (or steam) in particular for mushroom, pine nut, pseudo-ginseng, sanchi flower, rhizoma Gastrodiae, day lily, wizened other the suitable common electrical that reaches of all kinds of meat such as tealeaves, administration's sheet, walnut, auricularia auriculajudaes, belong to using energy source and energy-saving field.
Background technology
Can make the drying equipment of article fast dewatering in industrial or agricultural and daily life, important role be arranged, but the drying equipment of existing market supply all is to adopt electrical heating or steam-heated (0.4-0.6MPa gauge pressure) mode, just directly exclusive after the moisture content of absorbing articles through the high temperature drying air after the heating, cause the waste extremely of energy, especially electrical heating type drying equipment consumption electric weight is very big, the power consumption of (water) washing dryer that as a drying capacity is 30kg/h is just more than 50Kw, cause operating cost very high, product tea district in Yunnan, moisture content all will become the gross tea of moisture content about 20% through completing at the bright leaf more than 40%, what now all adopt in the process of completing is the heat drying equipment that uses firewood (employing steam is also arranged recently), there are bigger environmental pollution and energy dissipation, in the dry run of the living tea that is dewatered to moisture content about 8% by gross tea, past is the mode that adopts the sun to shine, now because needs that autumn tea is produced and the further requirement that improves tea quality, a lot of tea processing factories are all adopting steam or electric seasoning equipment, cross in the heating process of range request and also have firing equipment energy consumption problem of higher in the filial piety of sending out fast of producing ripe tea simultaneously.Steam compression heat pump can absorb heat from low-temperature heat source, and heating performance coefficient is electrically heated 3-4 times more than, is very superior (confession) the hot equipment of energy-conservation adding of performance.Comparative maturity is hot pump in low temp dry heat equipment now, but there is the temperature not high (in 70 ℃) of the dry air that is used to dewater in this equipment, dry wettability power is lower, seriously limited its practical application, the art of this patent can make the temperature of dry air reach more than 100 ℃, can be applied to most dry field, thus the energy consumption of having saved drying equipment greatly.
Summary of the invention
The purpose of this utility model is to provide send down return air moderate and high temperature heat drying machine on a kind of variable air rate drum-type, promptly use dry machine, the apparatus of low boiling working fluid steam compression heat pump, can realize than the power consumption of electrical drying equipment saving more than at least 50%.
The technical scheme that its technical problem that solves the utility model adopts is:
This dry equipment comprises: 1) heat pump fluid closed circuit, 2) the inside air closed circuit, 3) motorized pulleys (rotating speed 32r/min) are the porous rotating cylinder, wherein:
1) the heat pump fluid closed circuit comprises: 3P heat pump compressor, evaporation coil, condenser coil, backboard formula recooler, reservoir, vapour liquid separator, electronic expansion valve and copper pipe, refrigeration working medium device for drying and filtering;
2) the inside air closed circuit comprises: variable air rate low noise blower fan, plenum chamber, return air chamber, withdrawable screen pack, stainless steel sandwich heat-insulating wall.
The outer formation cuboid of this dry equipment is cabinet type, exterior panel adopts the sandwich thermal insulation board, install in order to the circular rotating cylinder of the porous of placing article in a side, top and lower space at rotating cylinder are provided with plenum chamber and return air chamber respectively, separate with it with stainless steel porous plate (do return air with air-supply with), in return air chamber inside, bottom variable air rate low noise blower fan is housed, withdrawable screen pack is set between the blower fan suction inlet, on the pipeline that forms by heat-insulating wall of the lateral space of blower fan outlet and rotating cylinder, evaporimeter and condenser are set in proper order, condenser is above evaporimeter, in the evaporimeter bottom water-collecting tray and drainpipe are set, in the return air chamber of the bottom of rotating cylinder, be partitioned into the space (also can be arranged on the outside) of placing heat pump compressor, keep apart by heat-insulating wall between two spaces, in the bottom of dry place water leg and drainpipe are set, the backboard formula recooler of heat pump refrigerating system is arranged on the back side, circulating fan adopts the direct connection transmission, rotating cylinder adopts the belt pulley transmission, and two drive motors are installed in relevant position, the back side.
Adopt R600a (iso-butane, C
4H
10), R600 (normal butane, C
4H
10), R236ea (HFC-236fa, C
3H
2F
6), R601 (pentane, C
5H
12), R245fa (pentafluoropropane, C
3H
3F
5), R601a1 (isopentane, C
5H
12), n-hexane (C
6H1
4) as the refrigeration system cycle fluid.
Air circulation fans adopts double speed blower fan (or frequency conversion fan) to change its drying capacity.
Can be used for mushroom, pine nut, pseudo-ginseng, sanchi flower, rhizoma Gastrodiae, day lilies, the wizened occasions that reach other suitable common electrical heating (or steam) drying equipment of all kinds of meat such as tealeaves, administration's sheet, walnut, auricularia auriculajudae.
When specifically article being carried out drying, can reach requirement according to the moisture content of article to drying time, adjust the rotating speed of circulating fan, thereby reach the purpose that changes rate of drying.
The beneficial effects of the utility model are:
(1) can reach than the power consumption of electrical drying equipment saving more than at least 50%, heating performance coefficient is 3.8;
(2) can realize the inner loop of dry air, environment is not had thermal pollution;
(3) can be according to the kind of article, the drying capacity that moisture content reaches equipment that the specific requirement of drying time is adjusted.
Describe concrete structure of the present utility model in detail below in conjunction with accompanying drawing, but structure of the present utility model is not limited to shown in the accompanying drawing.
Description of drawings
Fig. 1 is the elevation that send down return air moderate and high temperature heat drying machine on the variable air rate drum-type;
Fig. 2 is the side view that send down return air moderate and high temperature heat drying machine on the variable air rate drum-type;
Fig. 3 is the vertical view that send down return air moderate and high temperature heat drying machine on the variable air rate drum-type;
Fig. 4 is the refrigeration system piping diagram that send down return air moderate and high temperature heat drying machine on the variable air rate drum-type.
The specific embodiment
Among Fig. 1,2,3 and 4,3P heat pump compressor 1, evaporimeter 2, condenser 3, circular rotating cylinder (32 rev/mins) 4, variable air rate low noise blower fan 5, return air chamber stainless steel porous barrier 6, plenum chamber stainless steel porous barrier 7, heat-insulating wall 8, backboard formula recooler 9, tube rotaring motor 10, circulating fan motor 11, drainpipe 12, reservoir 13, device for drying and filtering 14, choke valve 15, vapour liquid separator 16, copper pipe 17.
Be made up of heat pump fluid closed circuit, inside air closed circuit, motorized pulleys, the heat pump fluid closed circuit comprises: 3P heat pump compressor 1, evaporation coil, condenser coil, backboard formula recooler 9, reservoir 13, vapour liquid separator 16, electronic expansion valve and copper pipe 17, refrigeration working medium device for drying and filtering 14; The inside air closed circuit comprises: variable air rate low noise blower fan 5, plenum chamber, return air chamber, withdrawable screen pack, stainless steel sandwich heat-insulating wall 8; The outer formation cuboid of this dry equipment is cabinet type, outer heat-insulating wall 8 adopts the sandwich thermal insulation board, install in order to the circular rotating cylinder 4 of the porous of placing article in a side, top and lower space at rotating cylinder 4 are provided with plenum chamber and return air chamber respectively, use return air chamber stainless steel porous barrier 6 respectively, plenum chamber stainless steel porous barrier 7 (do return air with air-supply with) separates with it, in return air chamber inside, bottom variable air rate low noise blower fan 5 is housed, between blower fan 5 suction inlets, withdrawable screen pack is set, on the pipeline that forms by heat-insulating wall 8 of the lateral space of blower fan 5 outlet and rotating cylinder 4, evaporimeter 2 and condenser 3 are set in proper order, condenser 3 is above evaporimeter 2, in evaporimeter 2 bottoms water-collecting tray and drainpipe 12 are set, in the return air chamber of the bottom of rotating cylinder 4, be partitioned into the space (also can be arranged on the outside) of placing heat pump compressor 1, keep apart by heat-insulating wall 8 between two spaces, water leg and drainpipe 12 are set in the bottom of dry place, the backboard formula recooler 9 of heat pump refrigerating system is arranged on the back side, circulating fan 5 adopts the direct connection transmission, rotating cylinder 4 adopts the belt pulley transmission, two drive motors: tube rotaring motor 10, circulating fan motor 11 is installed in relevant position, the back side.
Operation principle and process are as follows:
(1) air circulation: porous rotating cylinder 4 interior moist hot-airs pass through following return air porous barrier 6 and are arranged at the screen pack of fans entrance, be recycled cooling cooling in the evaporimeter 2 that blower fan 5 adds the heat pump that is sent to the side, when air themperature drops to dew point when following, airborne moisture content just freeze-outs, in time get rid of, air after dewatering is sent to heat in the condenser 3 that is arranged at evaporimeter top, side and becomes heated dry air, then by being located at the wind pushing cavity at top, air-supply porous barrier 7, be blown into the moisture of the dry place absorbing articles at porous rotating cylinder 4 places of placing article, be recycled blower fan afterwards again and suck beginning air circulation once more, airborne heat after the dry goods is just absorbed by the evaporimeter 2 of heat pump fully like this, be converted into the high temperature condensation heat that adds hot-air by heat pump cycle again, realized the recycling of heat, circulating fan 4 has height two retaining rotating speeds, adopts high-grade rotating speed when needs rapid draing.
(2) heat pump: low-temp low-pressure working medium (as the R601a) steam that is produced by the air heat of coming from dry place in the evaporimeter 2 is inhaled into compressor 1 through behind the vapour liquid separator 16, HTHP working substance steam process blast pipe 17 after overcompression is in condenser 3, heating in the air of evaporimeter 2, cycle fluid also is condensed into the liquid condition under the condensing pressure, pass through the cold again of backboard formula condenser 9 again, through behind the device for drying and filtering 14, flow into electronic throttle 15, become the low-temp low-pressure vapour-liquid two-phase mixture under the evaporating pressure, finished evaporation process by air heat in the time of in process evaporimeter 2, arrive vapour liquid separator 16 again, thereby finish a circulation.Heat pump compressor is placed on lower space.
Produce the tea-leaf withering machine (tealeaves is dried to 8% living tea from the gross tea of 20% moisture content) of a drying capacity 30kg/h, select the heat pump compressor of a 3P for use, the high-pressure liquid tube of refrigeration system adopts copper pipe d9.52 x 0.8, the low pressure return tube adopts copper pipe d15.88 x 0.8, circulating fan is selected BDF3.5 for use, and its top gear air quantity is 3500m
3/ h, deep low gear air quantity are 2500m
3/ h, heat-insulating wall adopts the thick corrosion resistant plate therebetween of 0.8mm 50mm polyvinyl chloride warming plate, the air-supply plate of plenum chamber and return air chamber and return air plate adopt the big orifice plate of the thick stainless steel of 0.8mm, adopt the motorized pulleys of rotating speed 32r/min, blower fan outlet is adopted three windproof tube cloth is soft and connects, all fill up SD special (purpose) rubber shock absorber under compressor and the blower fan, refrigeration system is filled and is added R600a (iso-butane, C
4H
10), R600 (normal butane, C
4H
10), R236ea (HFC-236fa, C
3H
2F
6), R601 (pentane, C
5H
12), R245fa (pentafluoropropane, C
3H
3F
5), R601a1 (isopentane, C
5H
12), n-hexane (C
6H
14).
Claims (1)
1, send down return air moderate and high temperature heat drying machine on a kind of variable air rate drum-type, it is characterized in that: be made up of heat pump fluid closed circuit, inside air closed circuit, motorized pulleys, the heat pump fluid closed circuit comprises: 3P heat pump compressor (1), evaporation coil, condenser coil, backboard formula recooler (9), reservoir (13), vapour liquid separator (16), electronic expansion valve and copper pipe (17), refrigeration working medium device for drying and filtering (14); The inside air closed circuit comprises: variable air rate low noise blower fan (5), plenum chamber, return air chamber, withdrawable screen pack, stainless steel sandwich heat-insulating wall (8); The outer formation cuboid of this dry equipment is cabinet type, exterior panel adopts sandwich heat-insulating wall (8), install in order to the circular rotating cylinder (4) of the porous of placing article in a side, top and lower space at rotating cylinder (4) are provided with plenum chamber and return air chamber respectively, with return air chamber stainless steel porous barrier (6), plenum chamber stainless steel porous barrier (7) separates with it, in return air chamber inside, bottom variable air rate low noise blower fan (5) is housed, between blower fan (5) suction inlet, withdrawable screen pack is set, on the pipeline that forms by heat-insulating wall of the lateral space of blower fan (5) outlet and rotating cylinder (4), evaporimeter (2) and condenser (3) are set in proper order, condenser (3) is in the top of evaporimeter (2), in evaporimeter (2) bottom water-collecting tray and drainpipe (12) are set, in the return air chamber of the bottom of rotating cylinder (4), be partitioned into the space of placing heat pump compressor (1), keep apart by heat-insulating wall between two spaces, in the bottom of dry place water leg and drainpipe are set, the backboard formula recooler (9) of heat pump refrigerating system is arranged on the back side, circulating fan (5) adopts the direct connection transmission, rotating cylinder (4) adopts the belt pulley transmission, two drive motors backboard formula recoolers (9), tube rotaring motor (10) is installed in relevant position, the back side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200813149U CN201215432Y (en) | 2008-06-05 | 2008-06-05 | Wind quantity variable roller type up-supply down-return medium high temperature heat pump dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200813149U CN201215432Y (en) | 2008-06-05 | 2008-06-05 | Wind quantity variable roller type up-supply down-return medium high temperature heat pump dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201215432Y true CN201215432Y (en) | 2009-04-01 |
Family
ID=40520637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200813149U Expired - Fee Related CN201215432Y (en) | 2008-06-05 | 2008-06-05 | Wind quantity variable roller type up-supply down-return medium high temperature heat pump dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201215432Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043079A (en) * | 2015-09-09 | 2015-11-11 | 赵连云 | Speed-adjustable tea drying device with airflow filtering net |
| CN105043064A (en) * | 2015-09-09 | 2015-11-11 | 杨仲辉 | Speed-adjustable tea leaf drying device with movement wheels |
| CN105091539A (en) * | 2015-09-09 | 2015-11-25 | 赵连云 | Tea drying device automatically controlled and provided with airflow filtering net |
| CN105202609A (en) * | 2015-10-21 | 2015-12-30 | 北京工业大学 | Heat pump system capable of using atmospheric natural cold source to increase working medium liquid supercooling degree and used for heat supply |
| CN106288739A (en) * | 2016-08-19 | 2017-01-04 | 天津市博爱制药有限公司 | A kind of Chinese crude drug Rotary drying device |
| CN107976037A (en) * | 2017-11-29 | 2018-05-01 | 河南佰衡节能科技股份有限公司 | Drum-type heat pump dryer and its furnace drying method |
| CN110903005A (en) * | 2019-11-18 | 2020-03-24 | 江苏天舒电器有限公司 | Sludge drying method |
| CN114752359A (en) * | 2022-04-13 | 2022-07-15 | 华中科技大学 | Energy-saving environment-friendly working medium capable of replacing HFC245fa for heat pump boiler |
-
2008
- 2008-06-05 CN CNU2008200813149U patent/CN201215432Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043079A (en) * | 2015-09-09 | 2015-11-11 | 赵连云 | Speed-adjustable tea drying device with airflow filtering net |
| CN105043064A (en) * | 2015-09-09 | 2015-11-11 | 杨仲辉 | Speed-adjustable tea leaf drying device with movement wheels |
| CN105091539A (en) * | 2015-09-09 | 2015-11-25 | 赵连云 | Tea drying device automatically controlled and provided with airflow filtering net |
| CN105043079B (en) * | 2015-09-09 | 2017-06-13 | 新沂市合沟工业集中区建设发展有限公司 | A kind of adjustable speed and with the tea drying device of airflow filtering net |
| CN105091539B (en) * | 2015-09-09 | 2017-06-16 | 浙江工商职业技术学院 | It is a kind of to realize automatically controlling and with the tea drying device of airflow filtering net |
| CN105202609A (en) * | 2015-10-21 | 2015-12-30 | 北京工业大学 | Heat pump system capable of using atmospheric natural cold source to increase working medium liquid supercooling degree and used for heat supply |
| CN105202609B (en) * | 2015-10-21 | 2018-10-19 | 北京工业大学 | A kind of heating heat pump system increasing worker quality liquid degree of supercooling using air natural cooling source |
| CN106288739A (en) * | 2016-08-19 | 2017-01-04 | 天津市博爱制药有限公司 | A kind of Chinese crude drug Rotary drying device |
| CN107976037A (en) * | 2017-11-29 | 2018-05-01 | 河南佰衡节能科技股份有限公司 | Drum-type heat pump dryer and its furnace drying method |
| CN107976037B (en) * | 2017-11-29 | 2023-11-28 | 河南佰衡节能科技股份有限公司 | Drum-type heat pump dryer and drying method thereof |
| CN110903005A (en) * | 2019-11-18 | 2020-03-24 | 江苏天舒电器有限公司 | Sludge drying method |
| CN114752359A (en) * | 2022-04-13 | 2022-07-15 | 华中科技大学 | Energy-saving environment-friendly working medium capable of replacing HFC245fa for heat pump boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090401 Termination date: 20120605 |