CN201215433Y - Wind quantity variable roller type side-supply side-return medium high temperature heat pump dryer - Google Patents
Wind quantity variable roller type side-supply side-return medium high temperature heat pump dryer Download PDFInfo
- Publication number
- CN201215433Y CN201215433Y CNU2008200813153U CN200820081315U CN201215433Y CN 201215433 Y CN201215433 Y CN 201215433Y CN U2008200813153 U CNU2008200813153 U CN U2008200813153U CN 200820081315 U CN200820081315 U CN 200820081315U CN 201215433 Y CN201215433 Y CN 201215433Y
- Authority
- CN
- China
- Prior art keywords
- heat pump
- heat
- return air
- rotating cylinder
- high temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001035 drying Methods 0.000 claims abstract description 30
- 238000005057 refrigeration Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 238000009413 insulation Methods 0.000 abstract description 2
- 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
- 230000005540 biological transmission Effects 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
- -1 C5H12) Chemical compound 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
- 230000015572 biosynthetic process Effects 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
Images
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to a variable air volume roller type lateral-feed lateral-reflux high temperature heat pump dryer, comprising a heat pump working medium circulation loop, an air internal circulation loop and an electric drum. The bottom space of a drum (5) is arranged with a heat pump compressor (1), while the two spaces are separated by a thermal insulation wallboard (12), the lower part of the dry space is arranged with a water collection groove and a drain pipe (8), a backboard type recooler (11) of the heat pump refrigeration system is arranged at the back, two drive motor circulation fan motors (9) and a drum motor circulation fan motor (10) are mounted at the back correspondingly. 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 a kind of variable air rate drum-type side and send side return air moderate and high temperature heat drying machine, be a kind of dry machine, apparatus that uses the 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 a kind of variable air rate drum-type side to send side return air moderate and high temperature heat drying machine, be a kind of dry machine, apparatus that uses the 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 circular 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: two grades of speed governing low noise blower fans are variable air rate low noise circulating 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, need dry article to be placed on by the circular rotating cylinder of porous inside at the middle part, both sides at rotating cylinder are provided with return air chamber and plenum chamber respectively, separate with it with stainless steel porous plate (do return air with air-supply with), variable air rate low noise blower fan is housed at the return air chamber top, to the blower fan suction inlet withdrawable screen pack is being set from return air chamber, order is provided with evaporimeter and condenser on the pipeline that is formed by heat-insulating wall of blower fan outlet, in the evaporimeter bottom water-collecting tray and drainpipe are set, space in the bottom of rotating cylinder is provided with 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.
Employing R600a (iso-butane, C4H10), R600 (normal butane, C4H10), R236ea (HFC-236fa, C3H2F6), and R601 (pentane, C5H12), R245fa (pentafluoropropane, C3H3F5), (isopentane, C5H12), n-hexane (C6H14) is as the refrigeration system cycle fluid for R601a1.
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.
Operation principle and process are as follows:
(1) air circulation: the interior moist hot-air of porous rotating cylinder passes through top return air porous barrier and is arranged at the screen pack of fans entrance, added cooling cooling in the evaporimeter that is sent to the heat pump that is arranged at the top by side variable air rate low noise circulating fan, 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 and is arranged at that heating becomes heated dry air in the condenser that is close to behind the evaporimeter, then by being located at the wind pushing cavity of side, the air-supply porous barrier, be blown into the moisture of the dry place absorbing articles at the porous rotating cylinder place 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 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 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 is inhaled into compressor through behind the vapour liquid separator, HTHP working substance steam process blast pipe after overcompression is in condenser, heating in the air that evaporimeter comes, cycle fluid also is condensed into the liquid condition under the condensing pressure, pass through the cold again of backboard formula condenser again, through behind the device for drying and filtering, flow into electronic throttle, 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 the process evaporimeter, arrive vapour liquid separator again, thereby finish a circulation.Heat pump compressor is placed on bottom space.
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 variable air rate drum-type side is sent side return air moderate and high temperature heat drying machine;
Fig. 2 is the side view that variable air rate drum-type side is sent side return air moderate and high temperature heat drying machine;
Fig. 3 is the vertical view that variable air rate drum-type side is sent side return air moderate and high temperature heat drying machine;
Fig. 4 is the refrigeration system piping diagram that variable air rate drum-type side is sent side return air moderate and high temperature heat drying machine.
The specific embodiment
Embodiment
Among Fig. 1,2,3 and 4, the utility model comprises 3P heat pump compressor 1, evaporimeter 2, condenser 3, variable air rate low noise blower fan 4, circular rotating cylinder (32 rev/mins) 5, return air chamber stainless steel porous barrier 6, plenum chamber stainless steel porous barrier 7, drainpipe 8, circulating fan motor 9, tube rotaring motor 10, backboard formula recooler 11, heat-insulating wall 12, reservoir 13, device for drying and filtering 14, choke valve 15, vapour liquid separator 16, copper pipe 17.
The outer formation cuboid of this dry equipment is cabinet type, outer heat-insulating wall 12 adopts the sandwich thermal insulation board, install in order to the circular rotating cylinder 5 of the porous of placing article at the middle part, both sides at circular rotating cylinder 5 are provided with return air chamber and plenum chamber respectively, respectively by return air chamber stainless steel porous plate 6, plenum chamber stainless steel porous barrier 7 (do return air with air-supply with) separates with it, variable air rate low noise blower fan 4 is housed at the return air chamber top, to variable air rate low noise blower fan 4 suction inlets, withdrawable screen pack is being set from return air chamber, order is provided with evaporimeter 2 and condenser 3 on the pipeline that is formed by heat-insulating wall 12 of variable air rate low noise blower fan 4 outlets, in evaporimeter 2 bottoms water-collecting tray and drainpipe 8 are set, space in the bottom of rotating cylinder 5 is provided with heat pump compressor 1, keep apart by heat-insulating wall 8 between two spaces, water leg and drainpipe 8 are set in the bottom of dry place, the backboard formula recooler 11 of heat pump refrigerating system is arranged on the back side, variable air rate low noise blower fan 4 adopts the direct connection transmission, rotating cylinder 5 adopts belt pulley transmission, two drive motors: circulating fan motor 9, tube rotaring motor 10 is installed in relevant position, the back side.
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, adopting rotating speed is the electronic rotating cylinder of 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, a kind of variable air rate drum-type side is sent side return air moderate and high temperature heat drying machine, it is characterized in that: be made up of heat pump fluid closed circuit, inside air closed circuit, circular rotating cylinder (5); The heat pump fluid closed circuit comprises 3P heat pump compressor (1), evaporation coil, condenser coil, backboard formula recooler (11), 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 circulating fan (4), plenum chamber, return air chamber, withdrawable screen pack, heat-insulating wall (12); Install in order to the circular rotating cylinder (5) of the porous of placing article at the middle part of heat-insulating wall (12), both sides at rotating cylinder (5) are provided with return air chamber and plenum chamber respectively, respectively by return air chamber stainless steel porous plate (6), plenum chamber stainless steel porous barrier (7) separates with it, variable air rate low noise blower fan (4) is housed at the return air chamber top, from the return air chamber to the blower fan, between (4) suction inlet withdrawable screen pack is being set, order is provided with evaporimeter (2) and condenser (3) on the pipeline that is formed by heat-insulating wall (12) of blower fan (4) outlet, in evaporimeter (2) bottom water-collecting tray and drainpipe (8) are set, space in the bottom of rotating cylinder (5) is provided with heat pump compressor (1), keep apart by heat-insulating wall (12) between two spaces, water leg and drainpipe (8) are set in the bottom of dry place, the backboard formula recooler (11) of heat pump refrigerating system is arranged on the back side, two drive motors circulating fan motors (9), tube rotaring motor circulating fan motor (10) is installed in relevant position, the back side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200813153U CN201215433Y (en) | 2008-06-05 | 2008-06-05 | Wind quantity variable roller type side-supply side-return medium high temperature heat pump dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200813153U CN201215433Y (en) | 2008-06-05 | 2008-06-05 | Wind quantity variable roller type side-supply side-return medium high temperature heat pump dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201215433Y true CN201215433Y (en) | 2009-04-01 |
Family
ID=40520638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200813153U Expired - Fee Related CN201215433Y (en) | 2008-06-05 | 2008-06-05 | Wind quantity variable roller type side-supply side-return medium high temperature heat pump dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201215433Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212419A (en) * | 2010-04-01 | 2011-10-12 | 宏芳香料（昆山）有限公司 | Perfume drying device and essential oil recycling method |
| CN104154727A (en) * | 2014-08-29 | 2014-11-19 | 梧州市中茗茶业有限公司 | Tea drier |
-
2008
- 2008-06-05 CN CNU2008200813153U patent/CN201215433Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212419A (en) * | 2010-04-01 | 2011-10-12 | 宏芳香料（昆山）有限公司 | Perfume drying device and essential oil recycling method |
| CN104154727A (en) * | 2014-08-29 | 2014-11-19 | 梧州市中茗茶业有限公司 | Tea drier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201215431Y (en) | Wind quantity variable chamber type medium high temperature heat pump dryer | |
| CN201215432Y (en) | Wind quantity variable roller type up-supply down-return medium high temperature heat pump dryer | |
| CN107594583A (en) | A kind of energy-efficient drying device of fruits and vegetables low-pressure superheated steam and method | |
| CN104776709A (en) | Multifunctional drying system integrating solar energy and heat pump | |
| CN107647446B (en) | Two-stage heat pump recovery device and method for waste steam and waste heat in low-pressure superheated steam drying of fruits and vegetables | |
| CN204881113U (en) | Solar energy and heat pump be multi -functional drying system of integration jointly | |
| CN202630632U (en) | Air dehumidifying and heating device | |
| CN211668130U (en) | Solar fruit and vegetable drying system | |
| CN103983095A (en) | Heat recovery heat pump and energy-storage solar heat pump united drying system and control method | |
| CN202354304U (en) | Heat pump dry production device for litchi and longan | |
| CN108609832A (en) | A kind of united sludge drying mechanism of the cold and hot drying of vacuum and method | |
| CN110296545A (en) | A kind of air conditioning of indirect heat exchange, supplying hot water, drying integrated heat pump assembly | |
| CN201215433Y (en) | Wind quantity variable roller type side-supply side-return medium high temperature heat pump dryer | |
| CN202350447U (en) | Vacuum drying box of high temperature heat pump | |
| CN202813887U (en) | Heat pump, heat pump air conditioner and heat pump water heating unit used in single and two-stage compression sequence | |
| CN201215434Y (en) | Wind quantity variable roller type down-supply up-return medium high temperature heat pump dryer | |
| CN106989573B (en) | Closed-circuit type heat pump drying system with internal radiation heat transfer function | |
| CN205607044U (en) | Closed loop dehumidifying heat pump dryer | |
| CN106052367A (en) | Preserved meat drying device driven to rotate by sine wave thermal expansion | |
| CN102600704B (en) | Mechanical vapour-recompression low-temperature air drier and method thereof | |
| CN207147099U (en) | A kind of heat pipe heat exchanging dryer based on closed cycle principle | |
| CN110057169A (en) | A kind of aquatic products heat pump type drying apparatus | |
| CN103791616B (en) | The dry air intake generation device of dryer | |
| CN201138065Y (en) | Water heating and boiling multifunctional machine of fluorine pipe line type air source heat pump with energy-saving cycle | |
| CN211424869U (en) | Vacuum drying machine |
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 |