CN110360813A - A kind of tobacco roasting heat-pump apparatus cooling tower cooling system - Google Patents
A kind of tobacco roasting heat-pump apparatus cooling tower cooling system Download PDFInfo
- Publication number
- CN110360813A CN110360813A CN201910664751.6A CN201910664751A CN110360813A CN 110360813 A CN110360813 A CN 110360813A CN 201910664751 A CN201910664751 A CN 201910664751A CN 110360813 A CN110360813 A CN 110360813A
- Authority
- CN
- China
- Prior art keywords
- cooling tower
- heat
- baking room
- pump apparatus
- tobacco
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/10—Roasting or cooling tobacco
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
- F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/001—Heating arrangements using waste heat
- F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
- F26B23/005—Heating arrangements using waste heat recovered from dryer exhaust gases using a closed cycle heat pump system ; using a heat pipe system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/02—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in buildings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/22—Tobacco leaves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C2001/006—Systems comprising cooling towers, e.g. for recooling a cooling medium
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Manufacture Of Tobacco Products (AREA)
Abstract
A kind of tobacco roasting heat-pump apparatus cooling tower cooling system, is related to tobacco roasting technical field, including drying unit, and the drying unit includes baking room, is connected with circulation air path on the left of the baking room.The tobacco roasting heat-pump apparatus cooling tower cooling system, pass through the electrical power that will be consumed during closed dehumidifying operation of heat pump, due to ability conservation principle, part energy therein is eventually converted to heat and brings baking room into air circulation, to improve the temperature of baking room, and the technique of tobacco drying needs to keep constant temperature in the specific period, constant humidity, increase surface air cooler in drying system thus, by the way that heat is taken away with recirculated water in cooling tower in surface air cooler, on the one hand guarantee that temperature is adjustable in baking room, meet the baking process of tobacco leaf, on the other hand most of sensible heat of return air has been taken away, the cooling capacity of dehumidification system is increased indirectly, the final dehumidification efficiency for improving dehumidifying heat pump.
Description
Technical field
The present invention relates to tobacco roasting technical field, specially a kind of tobacco roasting heat-pump apparatus is cooled down with cooling tower is
System.
Background technique
Tobacco is as cigarette or the primary raw material of other similar products, due to itself being plant, in production cigarette
Need to carry out multiple working procedure before to reach scheduled state, wherein drying directly decides as one of numerous processes
The quality of tobacco.
The process requirement of tobacco drying keeps constant temperature, humidity constant state in the specific period, and temperature is excessively high, the too low meeting of humidity
It causes tobacco drying excessive, causes tobacco the problem of embrittlement and burning occur, equally, temperature is too low, humidity is excessively high will cause cigarette
Moisture high UCL in grass, is easy to appear the problems such as mouldy in the storage in later period, and above-mentioned two situations are being fabricated to cigarette finished product
Afterwards, the mouthfeel of product can all be influenced.
To solve the above problems, inventor proposes a kind of tobacco roasting heat-pump apparatus cooling tower cooling system, have
Temperature and humidity is controllable, improves the advantages of dehumidifying and heating efficiency, ensure that the steady of tobacco temperature and humidity during the drying process
Fixed, after improving tobacco drying quality, Improving The Quality of Products while, increase the storage time of tobacco material.
Summary of the invention
To realize that above-mentioned temperature and humidity is controllable, improving the purpose of dehumidifying and heating efficiency, the present invention provides following technology
Scheme: a kind of tobacco roasting heat-pump apparatus cooling tower cooling system, including drying unit, internal circulation heat-exchanging device and water cooling dress
It sets.
Wherein: the drying unit includes baking room, circulation air path, shell and adjusting air valve.
The internal circulation heat-exchanging device includes interior circulating fan, condenser, evaporator, surface air cooler and sensible heat exchanger.
The water cooling plant includes water cooled pipeline, cooling tower water pump, cooling tower ontology and blower fan of cooling tower.
The position of above-mentioned each structure and connection relationship are as follows:
The drying unit includes baking room, is electrically connected between the adjusting air valve and baking room, and therebetween
It is connected to by pipeline, circulation air path is connected on the left of the baking room, the shape of the circulating line is L shape, institute
Circulating line is stated to run through far from one end of baking room and extend to the inside of shell and be electrically connected with interior circulating fan, the circulation
Air duct is connected with shell far from one end of baking room, and the adjusting air valve, interior circulating fan, condenser, evaporator, table are cold
Device and sensible heat exchanger are respectively positioned on the inside of shell, and the underside on the left of the baking room is connected with adjusting air valve.
The internal circulation heat-exchanging device includes interior circulating fan, is connected with condensation on the right side of the interior circulating fan
Device, the underside of the interior circulating fan are connected with evaporator, and the internal activity of the shell is connected with surface air cooler, the table
It is connected with sensible heat exchanger on the left of cooler, is connected between the surface air cooler and cooling tower ontology by water cooled pipeline, institute
Stating water cooled pipeline has two, and the specification of two water cooled pipelines is all the same, the condenser, evaporator, surface air cooler and sensible heat
It is two-way electrical connection between heat exchanger, between the circulating fan, condenser, evaporator, surface air cooler and sensible heat exchanger
It is connected with each other, the inside of shell is divided into six subregions of A, B, C, D, E and F.
The water cooling plant includes water cooled pipeline, and cooling tower water pump is connected on the outside of the water cooled pipeline, described
Cooling tower ontology is connected on the left of cooling tower water pump, the top movable of the cooling tower ontology is connected with cooling tower wind
Machine.
Preferably, the region between the adjusting air valve, surface air cooler and shell is the area A.
Preferably, the region between the surface air cooler, sensible heat exchanger and shell is the area B.
Preferably, the region between the evaporator and sensible heat exchanger is the area C.
Preferably, the region between the evaporator, sensible heat exchanger and shell is the area D.
Preferably, the region between the adjusting air valve, surface air cooler, sensible heat exchanger, condenser and shell is the area E.
Preferably, the region between the condenser, evaporator and shell is the area F, the interior circulating fan is located at the area F
It is interior.
Compared with the prior art and product, the beneficial effects of the present invention are:
1, the tobacco roasting heat-pump apparatus cooling tower cooling system, by making the high temperature return air in baking room, one
Part enters E, and a part flows through A-B by surface air cooler, and control eventually enters into the air quantity of evaporator, so that limited cooling capacity
Play maximum effect on moisture extraction.
2, tobacco roasting heat-pump apparatus cooling tower cooling system, by will disappear during closed dehumidifying operation of heat pump
The electrical power of consumption, due to ability conservation principle, part energy therein is eventually converted to heat and brings baking into air circulation
Stove room, so that the temperature of baking room is improved, and the technique of tobacco drying needs to keep constant temperature, constant humidity in the specific period,
Increase surface air cooler in drying system thus, by taking away heat with recirculated water in cooling tower in surface air cooler, on the one hand guarantees
Temperature is adjustable in baking room, meets the baking process of tobacco leaf, has on the other hand taken away most of sensible heat of return air, indirectly
The cooling capacity of dehumidification system is increased, the final dehumidification efficiency for improving dehumidifying heat pump.
3, tobacco roasting heat-pump apparatus cooling tower cooling system, by being increased using cooling tower water pump and blower fan of cooling tower
Add frequency control water flow, amount of air circulation, so as to adjust the heat dissipation capacity that surface air cooler is final, can finally accurately control in baking room
Temperature meets tobacco stoving process requirement.
4, the tobacco roasting heat-pump apparatus cooling tower cooling system, by the Hot wet air heating of surface air cooler through B-C with from steaming
The Cryogenic air that hair device comes out makees Exchange of apparent heat when flowing through D-E, and heat is transmitted to D-E process from B-C process, on the one hand reduces
Into the air themperature of evaporator, to improve its relative humidity, the dehumidification efficiency of system can be obviously improved；On the other hand, from
Sensible heat of the Cryogenic air that evaporator comes out Jing Guo D-E process, which absorbs, partially improves leaving air temp again, improves whole system
Heating efficiency.
Detailed description of the invention
Fig. 1 is each structure connection diagram of the present invention；
Fig. 2 is each partitioned organization schematic diagram in inventive shell.
In figure: 1- drying unit, 11- baking room, 12- circulation air path, 13- shell, 14- adjusting air valve, circulating picture-changing in 2-
Circulating fan in thermal, 21-, 22- condenser, 23- evaporator, 24- surface air cooler, 25- sensible heat exchanger, 3- water cooling plant,
31- water cooled pipeline, 32- cooling tower water pump, 33- cooling tower ontology, 34- blower fan of cooling tower.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-2:
The tobacco roasting heat-pump apparatus cooling tower cooling system, including drying unit 1, internal circulation heat-exchanging device 2 and water
Device for cooling 3.
Wherein: drying unit 1 includes baking room 11, circulation air path 12, shell 13 and adjusting air valve 14.
Wherein: internal circulation heat-exchanging device 2 includes interior circulating fan 21, condenser 22, evaporator 23, surface air cooler 24 and sensible heat
Heat exchanger 25.
Wherein: water cooling plant includes water cooled pipeline 31, cooling tower water pump 32, cooling tower ontology 33 and blower fan of cooling tower 34.
The initial position and connection relationship of above-mentioned each structure are as follows:
Drying unit 1 includes baking room 11, and the left side of baking room 11 is connected with circulation air path 12, and circulation air path 12 is remote
One end from baking room 11 is connected with shell 13, and the underside in 11 left side of baking room is connected with adjusting air valve 14.
Internal circulation heat-exchanging device 2 includes interior circulating fan 21, and the right side of interior circulating fan 21 is connected with condenser 22,
The underside of interior circulating fan 21 is connected with evaporator 23, and the internal activity of shell 13 is connected with surface air cooler 24, surface air cooler 24
Left side be connected with sensible heat exchanger 25.
Water cooling plant 3 includes water cooled pipeline 31, and the outside of water cooled pipeline 31 is connected with cooling tower water pump 32, cooling tower
The left side of water pump 32 is connected with cooling tower ontology 33, and the top movable of cooling tower ontology 33 is connected with blower fan of cooling tower 34.
Wherein:
A, the interconnection between circulating fan 21, condenser 22, evaporator 23, surface air cooler 24 and sensible heat exchanger 25,
The inside of shell 13 is divided into six subregions of A, B, C, D, E and F, the region between adjusting air valve 14, surface air cooler 24 and shell 13
For the area A.
B, adjusting air valve 14, interior circulating fan 21, condenser 22, evaporator 23, surface air cooler 24 and sensible heat exchanger 25 are equal
Region between the inside of shell 13, surface air cooler 24, sensible heat exchanger 25 and shell 13 is the area B.
C, it to be electrically connected between adjusting air valve 14 and baking room 11, and is connected to by pipeline therebetween, evaporator 23
Region between sensible heat exchanger 25 is the area C.
Wherein:
It d, is two-way electrical connection, evaporator between condenser 22, evaporator 23, surface air cooler 24 and sensible heat exchanger 25
23, the region between sensible heat exchanger 25 and shell 13 is the area D.
E, it is connected between surface air cooler 24 and cooling tower ontology 33 by water cooled pipeline 31, water cooled pipeline 31 has two, two
The specification of water cooled pipeline 31 is all the same, adjusting air valve 14, surface air cooler 24, sensible heat exchanger 25, condenser 22 and shell 13
Between region be the area E.
F, the shape of circulating line 12 is L shape, and circulating line 12 runs through far from one end of baking room 11 and extends to shell
It the inside of body 13 and is electrically connected with interior circulating fan 21, the region between condenser 22, evaporator 23 and shell 13 is the area F, interior
Circulating fan 21 is located in the area F.
When in use, the high temperature and humidity air in baking room 11 enters equipment by A, and flows to B by surface air cooler 24, from
Enter evaporator 23 at C, arrive and enter sensible heat exchanger 25 at D, enters condenser 22 out from E and heat, by interior circulated air
Machine 21 delivers into baking room 11, thus circulation in being formed.
High temperature return air in baking room 11, a part enter E, and a part flows through A-B by surface air cooler 24, and control is most
The air quantity for entering evaporator 23 eventually, so that limited cooling capacity plays maximum effect on moisture extraction.
Cooling tower water pump 32 and blower fan of cooling tower 34 increase frequency control water flow, amount of air circulation, cold so as to adjust table
The final heat dissipation capacity of device 24, can finally accurately control temperature in baking room 11, meet tobacco stoving process requirement.
Make sensible heat when flowing through D-E with the Cryogenic air come out from evaporator 23 through B-C by the Hot wet air heating of surface air cooler 24
Exchange, heat is transmitted to D-E process from B-C process, on the one hand reduces the air themperature into evaporator 23, to improve it
Relative humidity can be obviously improved the dehumidification efficiency of system；On the other hand, the Cryogenic air come out from evaporator 23 is flowed by D-E
The sensible heat of journey, which absorbs, partially improves leaving air temp again, improves the heating efficiency of whole system.
The electrical power consumed in the process by the operation of heat pump that closed will dehumidify, Utilization ability conservation principle, therein one
Portion of energy is eventually converted to heat and brings baking room 11 into air circulation, so that the temperature of baking room 11 is improved, and tobacco
The technique of drying but needs to keep constant temperature, constant humidity in the specific period, increases surface air cooler 24 in drying system thus, passes through
Heat is taken away with recirculated water in cooling tower ontology 33 in surface air cooler 24, on the one hand guarantees that temperature is adjustable in baking room 11, meets
The baking process of tobacco leaf, has on the other hand taken away most of sensible heat of return air, increases the cooling capacity of dehumidification system indirectly,
The final dehumidification efficiency for improving dehumidifying heat pump.
Above structure and process please refer to Fig. 1-2.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of tobacco roasting heat-pump apparatus cooling tower cooling system, including drying unit (1), internal circulation heat-exchanging device (2)
With water cooling plant (3), it is characterised in that: the drying unit (1) includes baking room (11), and the left side of the baking room (11) is living
Dynamic to be connected with circulation air path (12), the circulation air path (12) is connected with shell (13) far from the one end of baking room (11),
Underside on the left of the baking room (11) is connected with adjusting air valve (14)；
The internal circulation heat-exchanging device (2) includes interior circulating fan (21), and the right side of the interior circulating fan (21) is flexibly connected
Have condenser (22), the underside of the interior circulating fan (21) is connected with evaporator (23), the inside of the shell (13)
It is connected with surface air cooler (24), is connected with sensible heat exchanger (25) on the left of the surface air cooler (24)；
The water cooling plant (3) includes water cooled pipeline (31), is connected with cooling tower water on the outside of the water cooled pipeline (31)
It pumps (32), is connected with cooling tower ontology (33) on the left of the cooling tower water pump (32), the cooling tower ontology (33)
Top movable is connected with blower fan of cooling tower (34).
2. a kind of tobacco roasting heat-pump apparatus cooling tower cooling system according to claim 1, it is characterised in that: described
The shape of circulating line (12) is L shape, and the circulating line (12) runs through far from the one end of baking room (11) and extends to shell
It the inside of body (13) and is electrically connected with interior circulating fan (21).
3. a kind of tobacco roasting heat-pump apparatus cooling tower cooling system according to claim 1, it is characterised in that: described
Adjusting air valve (14), interior circulating fan (21), condenser (22), evaporator (23), surface air cooler (24) and sensible heat exchanger (25)
It is respectively positioned on the inside of shell (13).
4. a kind of tobacco roasting heat-pump apparatus cooling tower cooling system according to claim 1, it is characterised in that: described
To be electrically connected between adjusting air valve (14) and baking room (11), and it is connected to by pipeline therebetween.
5. a kind of tobacco roasting heat-pump apparatus cooling tower cooling system according to claim 1, it is characterised in that: described
It is two-way electrical connection between condenser (22), evaporator (23), surface air cooler (24) and sensible heat exchanger (25).
6. a kind of tobacco roasting heat-pump apparatus cooling tower cooling system according to claim 1, it is characterised in that: described
It being connected between surface air cooler (24) and cooling tower ontology (33) by water cooled pipeline (31), the water cooled pipeline (31) has two, and two
The specification of root water cooled pipeline (31) is all the same.
7. a kind of tobacco roasting heat-pump apparatus cooling tower cooling system according to claim 1, it is characterised in that: described
Interconnection between circulating fan (21), condenser (22), evaporator (23), surface air cooler (24) and sensible heat exchanger (25),
The inside of shell (13) is divided into six subregions of A, B, C, D, E and F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910664751.6A CN110360813A (en) | 2019-07-23 | 2019-07-23 | A kind of tobacco roasting heat-pump apparatus cooling tower cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910664751.6A CN110360813A (en) | 2019-07-23 | 2019-07-23 | A kind of tobacco roasting heat-pump apparatus cooling tower cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110360813A true CN110360813A (en) | 2019-10-22 |
Family
ID=68221227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910664751.6A Pending CN110360813A (en) | 2019-07-23 | 2019-07-23 | A kind of tobacco roasting heat-pump apparatus cooling tower cooling system |
Country Status (1)
| Country | Link |
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| CN (1) | CN110360813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112414104A (en) * | 2020-11-18 | 2021-02-26 | 西安银能科技发展有限责任公司 | Rapid cooling device for vacuum drying oven and use method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1160889B (en) * | 1978-10-26 | 1987-03-11 | Berti Furic | DRYING SYSTEM PARTICULARLY FOR TIMBER |
| CN105737545A (en) * | 2016-04-22 | 2016-07-06 | 河南佰衡节能科技股份有限公司 | Heat pump drying equipment fully utilizing humidity and heat |
| CN106152765A (en) * | 2016-08-23 | 2016-11-23 | 合肥天鹅制冷科技有限公司 | Dehumidifier type heat pump dryer |
| CN108585411A (en) * | 2018-04-18 | 2018-09-28 | 广东芬尼克兹环保科技有限公司 | A kind of sludge drying system based on heat pump techniques |
| CN109520282A (en) * | 2018-11-23 | 2019-03-26 | 北京达特集成技术有限责任公司 | Heat pump drying equipment |
| CN109945603A (en) * | 2019-03-22 | 2019-06-28 | 广州市集木蓄能技术开发有限公司 | A kind of enclosed heat pump drying system |
-
2019
- 2019-07-23 CN CN201910664751.6A patent/CN110360813A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1160889B (en) * | 1978-10-26 | 1987-03-11 | Berti Furic | DRYING SYSTEM PARTICULARLY FOR TIMBER |
| CN105737545A (en) * | 2016-04-22 | 2016-07-06 | 河南佰衡节能科技股份有限公司 | Heat pump drying equipment fully utilizing humidity and heat |
| CN106152765A (en) * | 2016-08-23 | 2016-11-23 | 合肥天鹅制冷科技有限公司 | Dehumidifier type heat pump dryer |
| CN108585411A (en) * | 2018-04-18 | 2018-09-28 | 广东芬尼克兹环保科技有限公司 | A kind of sludge drying system based on heat pump techniques |
| CN109520282A (en) * | 2018-11-23 | 2019-03-26 | 北京达特集成技术有限责任公司 | Heat pump drying equipment |
| CN109945603A (en) * | 2019-03-22 | 2019-06-28 | 广州市集木蓄能技术开发有限公司 | A kind of enclosed heat pump drying system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112414104A (en) * | 2020-11-18 | 2021-02-26 | 西安银能科技发展有限责任公司 | Rapid cooling device for vacuum drying oven and use method thereof |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191022 |
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| RJ01 | Rejection of invention patent application after publication |