CN115804464A - Tobacco baking method and device based on internal circulation heat pump drying device - Google Patents
Tobacco baking method and device based on internal circulation heat pump drying device Download PDFInfo
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- CN115804464A CN115804464A CN202211613310.1A CN202211613310A CN115804464A CN 115804464 A CN115804464 A CN 115804464A CN 202211613310 A CN202211613310 A CN 202211613310A CN 115804464 A CN115804464 A CN 115804464A
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Abstract
The invention discloses a tobacco baking method and a tobacco baking device based on an internal circulation heat pump drying device, wherein the method comprises the following steps of designing a closed baking room which is provided with the internal circulation heat pump drying device; setting two corresponding curves of the dry bulb temperature and the wet bulb temperature of the curing barn according to time; the operation state of a unit connected with an internal circulation heat pump drying device through an air pipe in a baking room is adjusted to ensure that the measured value in the baking room meets the requirements of dry bulb temperature and wet bulb temperature of a curve, and the heating and dehumidifying operation modes and degrees of the unit are adjusted to ensure that the measured value meets the set value as much as possible, so that the difference value approaches to 0; and (3) baking the dry-bulb temperature and the wet-bulb temperature for 1 hour in each temperature section, and baking the dry-bulb temperature and the wet-bulb temperature in sequence from low to high to finish the integral baking. According to the method of the invention, the execution accuracy of the tobacco baking process is greatly improved, the tobacco grade is improved, the baking time is averagely shortened under the comparison of different temperatures and devices in the baking room with the same area, and the electricity charge is saved.
Description
Technical Field
The invention relates to the technical field of tobacco production, in particular to a tobacco baking method and a tobacco baking device based on an internal circulation heat pump drying device.
Background
Tobacco is a special plant in our lives, has high economic value and is called tobacco leaves or flue-cured tobacco, and in addition, tobacco belongs to annual or perennial herbaceous plants. The tobacco is toxic, but has certain medicinal value, and has the effects of promoting blood circulation, killing insects, dredging channels and activating collaterals, and promoting qi circulation and relieving pain according to the reference.
Tobacco processing requires its curing, which is currently widespread with the substitution of heat pumps for burners, but also reveals some drawbacks: the operation of moisture removal is carried out by using a moisture removal window and an air supply door, moisture evaporated by tobacco is discharged, moist hot air of about 10 ten thousand cubic meters is discharged, and the same amount of external fresh air enters, so that a large amount of fragrant substances in baking are dissipated, and a large amount of waste heat is discharged; when the outside air temperature is low, a large amount of cold air enters to seriously affect the kiln temperature, and particularly in the tendon drying stage, the time is prolonged to affect the tobacco quality, so that a tobacco baking method and a tobacco baking device based on an internal circulation heat pump drying device are provided to solve the problems.
Disclosure of Invention
The invention provides an internal circulation heat pump drying device, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
a tobacco baking method based on an internal circulation heat pump drying device is characterized by comprising the following steps:
1) Designing a closed curing barn for curing tobacco, wherein the curing barn is provided with an internal circulation heat pump drying device; setting two corresponding curves of the dry bulb temperature and the wet bulb temperature of the curing barn according to time; the corresponding curves are set as follows:
2) The operation state of the baking room is adjusted by a unit of the baking room connected with the internal circulation heat pump drying device through the air pipe according to two corresponding curves of the dry bulb temperature and the wet bulb temperature of time, so that the measured value in the baking room meets the requirements of the dry bulb temperature and the wet bulb temperature of the curves,
3) The running unit controller adjusts the heating and dehumidifying running modes and degrees of the unit according to the measured values of the dry bulb temperature and the relative humidity, so that the heating and dehumidifying running modes and degrees are matched with the set values as much as possible, and the difference value approaches to 0;
4) And (3) baking the dry bulb temperature and the wet bulb temperature in relative temperature sections for 1 hour, and baking in sequence from low to finish the integral baking.
An inner loop heat pump drying device, the load simulator comprises a case, machine incasement portion is provided with the partition plate, machine incasement portion falls into high temperature cabin and normal atmospheric temperature cabin through the partition plate, just divide into two, the below with it through the partition plate in high temperature cabin and the normal atmospheric temperature cabin respectively install in the high temperature cabin and catch water module, top install two condensers, the below in the high temperature cabin the inside compressor unit that is provided with in normal atmospheric temperature cabin, the top install the evaporimeter in the normal atmospheric temperature cabin, machine case top is installed out the tuber pipe, movable mounting has the filter plate and removes the flavor board in the tuber pipe.
Preferably, one side of the high-temperature cabin below is connected with an air return pipe.
Preferably, the water catching module comprises a water catching fan, a heat regenerator is installed on one side, away from the air return pipe, of the water catching fan, and a water catching device is installed on the other side of the heat regenerator.
Preferably, a circulating fan is arranged above the condenser and is matched with the air outlet pipe for use.
Preferably, an electric cabinet is arranged above the compressor unit and is installed on a partition plate between the two normal-temperature cabins.
Preferably, an outer fan is arranged on one side of the evaporator, the outer fan is installed on the case, and a foot pad is installed at the bottom of the case.
Preferably, the filter plate and remove the relative one side of keeping away from of smell board outer end and equally divide and do not move about and be provided with two limiting plates one, the filter plate and remove the relative one side of being close to of smell board outer end and be provided with two limiting plates two, two one ends of limiting plate and two both ends of limiting plate are close to of limiting plate one and equally divide and do not magnetism be connected with magnetic path two, the top and the below of filter plate and removal smell board outer end all are provided with magnetic path one.
Preferably, the second magnetic block is arranged at the outer ends of the filter plate and the smell removal plate, the first magnetic block is arranged on the air outlet pipe, and the outer ends of the filter plate and the smell removal plate are respectively provided with a handle.
Preferably, the filter plate and remove the flavor board and equally divide and do not have the mounting panel swing joint, mounting panel one end internally mounted has the fly leaf, a plurality of spacing springs are installed to the opposite side of fly leaf.
Preferably, the mounting panel sets up in the tuber pipe, two the fly leaf pastes with filter plate and remove a flavor board one end respectively.
The beneficial effects of the invention are as follows:
1. according to the method of the invention, the execution accuracy of the tobacco baking process is greatly improved, the tobacco grade is improved, the baking time is averagely shortened by 20 hours under the comparison of common heat pump baking rooms with the same area, and the electricity charge is saved by 200-300 degrees per kang.
2. This device that uses is through the module of catching water that sets up, the condenser, circulating fan, compressor unit, evaporimeter and outer fan are used coordinately, a high temperature moisture-laden air that is used for in the drying chamber originally dewaters the drying, return in the drying chamber again, thereby dewater the material, can circulate constantly to realize the drying, it is high-efficient to dehumidify, and use through the cooperation of these equipment, satisfy the drying chamber to the requirement of dry bulb temperature and wet bulb temperature, the suitability is higher, the hydrophone is caught to moisture, lose the heat after condensing into water, the heat is retrieved by the hydrophone and is returned and is continuously utilized in the compressor, heat energy among the drying process is not externally discharged, make the cold and hot both ends of heat pump device obtain abundant utilization, have high energy efficiency ratio, the operation effect is high, through sealed and microthermal stoving, can make the volatile fragrant atmosphere material in the tobacco leaf scatter and disappear very little, can improve the tobacco quality.
3. The device that should use is through the filter plate that sets up and remove the flavor board for carry out impurity filtering and smell and get rid of to the air current after the drying, avoid influencing the follow-up drying to the material, and use through the cooperation of limiting plate one, limiting plate two, magnetic path one and magnetic path two that set up, be used for to the filter plate and remove the flavor board and carry out spacing installation, use with spacing spring and fly leaf cooperation, conveniently install and dismantle the filter plate and remove the flavor board.
The device not only can circulate and constantly realize the drying, and it is high-efficient to dehumidify, and can satisfy the drying chamber and correspond the demand requirement of curve temperature to dry bulb temperature and wet bulb temperature, and the suitability is higher, still has extremely high energy efficiency ratio, and the operation effect is high, makes in the tobacco leaf volatile fragrant substance scatter and disappear very reduce, improves the tobacco quality.
Drawings
FIG. 1 is a schematic view of the present invention.
Fig. 2 is a schematic structural diagram of the inside of the chassis according to the present invention.
Fig. 3 is a schematic structural view of a first limiting plate and a second limiting plate according to the present invention.
FIG. 4 is a schematic view of the structure of the filter screen and odor elimination plate of the present invention.
Reference numbers in the figures: 1. a chassis; 2. a return air duct; 3. a high temperature compartment; 4. a room temperature cabin; 5. a water capture module; 501. a water catching fan; 502. a heat regenerator; 503. a water trap; 6. a condenser; 7. a circulating fan; 8. a compressor unit; 9. an electric cabinet; 10. an evaporator; 11. an outer fan; 12. an air outlet pipe; 13. filtering the plate; 14. a deodorizing board; 15. a handle; 16. a first limiting plate; 17. a second limiting plate; 18. a first magnetic block; 19. a second magnetic block; 20. mounting a plate; 21. a movable plate; 22. a limiting spring; 23. a foot pad; 24. a partition board.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
Referring to fig. 1 and 2, the embodiment provides an internal circulation heat pump drying device, which includes a cabinet 1, a partition wall plate 24 is arranged inside the cabinet 1, the cabinet 1 is divided into a high-temperature chamber 3 and a normal-temperature chamber 4 by the partition wall plate 24, the high-temperature chamber 3 and the normal-temperature chamber 4 are divided into two by the partition wall plate 24, a water catching module 5 is installed in the lower high-temperature chamber 3, the water catching module 5 includes a water catching fan 501, a heat regenerator 502 is installed on one side of the water catching fan 501 away from a return air duct 2, a water catching device 503 is installed on the other side of the heat regenerator 502, the compressor unit 8, the evaporator 10 and an external fan 11 are used in cooperation to condense and discharge water vapor in air flow, two condensers 6 are installed in the upper high-temperature chamber 3, the compressor unit 8 is installed in the lower normal-temperature chamber 4, the evaporator 10 is installed in the upper normal-temperature chamber 4, one side of the lower high-temperature chamber 3 is connected with the return air duct 2, an air duct 12 is installed above the cabinet 1, the return air duct 2 and the air duct 12 are connected with an external drying chamber, an air outlet duct 12 is movably installed with a filter plate 13 and a smell removing plate 14 for filtering impurities and filtering part of the smell in the air flow.
As shown in fig. 1 and 2, a circulating fan 7 is arranged above the condenser 6, the circulating fan 7 is used in cooperation with the air outlet pipe 12 and used for sending out heated and dehumidified air flow, an electric cabinet 9 is arranged above the compressor unit 8 and used for operating a control device, the electric cabinet 9 is installed on a partition plate 24 between two normal temperature cabins 4, an outer fan 11 is arranged on one side of the evaporator 10 and used in cooperation with the evaporator 10 to achieve the purpose of dehydration, the outer fan 11 is installed on the case 1, and a foot pad 23 is installed at the bottom of the case 1.
As shown in fig. 1 and 3, two first limiting plates 16 are movably arranged on the outer ends of the filter plate 13 and the smell removal plate 14 away from one side relatively, two second limiting plates 17 are arranged on the outer ends of the filter plate 13 and the smell removal plate 14 close to one side relatively, two magnetic blocks 19 are magnetically connected to the ends of the first limiting plates 16 close to one end of the second limiting plates 17 and the ends of the second limiting plates 17 respectively, the magnetic blocks 19 are mounted on the outer ends of the filter plate 13 and the smell removal plate 14, first magnetic blocks 18 are arranged above and below the outer ends of the filter plate 13 and the smell removal plate 14 and used for limiting the first limiting plates 16 and the second limiting plates 17, the first magnetic blocks 18 are mounted on the air outlet pipe 12 and used for positioning and mounting the filter plate 13 and the smell removal plate 14 so as to be mounted and dismounted conveniently, handles 15 are mounted on the outer ends of the filter plate 13 and the smell removal plate 14 respectively so as to facilitate the removal of the filter plate 13 and the smell removal plate 14.
As shown in fig. 3 and 4, the filter plate 13 and the odor removal plate 14 are movably connected with a mounting plate 20 respectively for limiting the filter plate 13 and the odor removal plate 14, the mounting plate 20 is disposed in the air outlet pipe 12, a movable plate 21 is mounted inside one end of the mounting plate 20, the two movable plates 21 are respectively attached to one ends of the filter plate 13 and the odor removal plate 14, and a plurality of limiting springs 22 are mounted on the other side of the movable plate 21 for facilitating the ejection of the filter plate 13 and the odor removal plate 14.
The working principle of the invention is as follows: when the device is used, the device is powered on through the electric cabinet 9 control device, so that the device operates, high-temperature humid air in an external drying chamber enters the case 1 through the air return pipe 2, firstly flows into a horizontal channel of the heat regenerator 502, loses part of sensible heat, reduces the temperature of a dry ball, greatly improves the relative humidity due to no change of the water content in the air, becomes high-humidity airflow, enters the water catcher 503, is matched with the compressor unit 8, the evaporator 10 and the external fan 11 for use, condenses and discharges water vapor in the airflow, the heat in the process is caught by the water catcher 503 and returns to the compressor unit 8 for continuous use, so that the heat energy of a dryer is not discharged outwards, the energy efficiency ratio is improved, the cooled dry air is sent into a vertical channel of the heat regenerator 502 through the water catching fan 501, draws extreme heat quantity to rise temperature, then flows through the condenser 6 to greatly rise the temperature, the temperature of the dry ball is raised, the relative humidity is reduced, the airflow becomes very dry, enters the air through the circulating fan 7, impurities and part of the filter plate 13 and the smell can be filtered, and then returns to the external drying chamber, so that the purpose of drying airflow is achieved, and the drying airflow is dried and the purpose of the material is dried;
when the filter plate 13 and the smell removal plate 14 need to be detached, cleaned or replaced, the limiting plate 16 above the outer end of the smell removal plate 14 is rotated upwards, the limiting plate 16 below the outer end of the filter plate 13 is rotated downwards, the limiting plate 16 is separated from the magnetic block II 19 and is connected with the magnetic block I18, then the limiting plate II 17 is rotated ninety degrees, two ends of the limiting plate II are separated from the magnetic block II 19 and are connected with the magnetic block I18 on two sides of the limiting plate II, the limiting spring 22 is reset, the movable plate 21, the filter plate 13 and the smell removal plate 14 are ejected outwards, and the filter plate 13 and the smell removal plate 14 can be taken down by holding the handle 15.
Example 2
A tobacco baking method based on an internal circulation heat pump drying device of embodiment 1 is characterized by comprising the following steps:
1) Designing a closed curing barn for curing tobacco, wherein the curing barn is provided with an internal circulation heat pump drying device; setting two corresponding curves of the dry bulb temperature and the wet bulb temperature of the curing barn according to time; the corresponding curve is set as follows (unit:. Degree. C.)
2) According to two corresponding curves of dry bulb temperature and wet bulb temperature of time in the curing barn, the operation state is adjusted by a unit of the curing barn connected with an internal circulation heat pump drying device through an air pipe so that the measured value in the curing barn meets the requirements of the dry bulb temperature and the wet bulb temperature of the curves,
3) The running unit controller adjusts the heating and dehumidifying running modes and degrees of the unit according to the measured values of the dry bulb temperature and the relative humidity, so that the heating and dehumidifying running modes and degrees are matched with the set values as much as possible, and the difference value approaches to 0;
4) And (3) baking the dry-bulb temperature and the wet-bulb temperature for 1 hour in each temperature section, and baking the dry-bulb temperature and the wet-bulb temperature in sequence from low to high to finish the integral baking.
During actual operation, threshold values of two parameters are determined;
the threshold value of the dry bulb temperature is default +/-1 ℃, and the threshold value of the relative humidity is default +/-0.5 ℃.
Δ T = dry-bulb temperature setting-dry-bulb temperature measured value;
Δ F = relative humidity set point — relative humidity actual measurement;
according to the actual measurement of the dry bulb temperature and the wet bulb temperature, the judgment is carried out according to the deviation of a threshold value, and meanwhile, 9 modes are stipulated for the curing barn state;
TABLE 1
Operation descriptions corresponding to the modes; TABLE 2
According to the method of the invention, the execution accuracy of the tobacco baking process is greatly improved, the tobacco grade is improved, the baking time is averagely shortened by 20 hours under the comparison of common heat pump baking rooms with the same area, and the electricity charge is saved by 200-300 degrees per kang.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (9)
1. A tobacco baking method based on an internal circulation heat pump drying device is characterized by comprising the following steps:
1) Designing a closed curing barn for curing tobacco, wherein the curing barn is provided with an internal circulation heat pump drying device; setting two corresponding curves of the dry bulb temperature and the wet bulb temperature of the curing barn according to time; the corresponding curve is set as follows:
2) According to two corresponding curves of dry bulb temperature and wet bulb temperature of time in the curing barn, the operation state is adjusted by a unit of the curing barn connected with an internal circulation heat pump drying device through an air pipe so that the measured value in the curing barn meets the requirements of the dry bulb temperature and the wet bulb temperature of the curves,
3) The running unit controller adjusts the heating and dehumidifying running modes and degrees of the unit according to the measured values of the dry bulb temperature and the relative humidity, so that the heating and dehumidifying running modes and degrees are matched with the set values as much as possible, and the difference value approaches to 0;
4) And (3) baking the dry-bulb temperature and the wet-bulb temperature for 1 hour in each temperature section, and baking the dry-bulb temperature and the wet-bulb temperature in sequence from low to high to finish the integral baking.
2. The tobacco baking method according to claim 1, characterized in that the internal circulation heat pump drying device comprises a machine case (1), a partition plate (24) is arranged inside the machine case (1), the machine case (1) is divided into a high-temperature chamber (3) and a normal-temperature chamber (4) through the partition plate (24), the high-temperature chamber (3) and the normal-temperature chamber (4) are divided into two parts through the partition plate (24), a water catching module (5) is arranged in the high-temperature chamber (3) below, two condensers (6) are arranged in the high-temperature chamber (3) above, a compressor unit (8) is arranged inside the normal-temperature chamber (4) below, an evaporator (10) is arranged in the normal-temperature chamber (4) above, an air outlet pipe (12) is arranged above the machine case (1), and a filter plate (13) and a smell removing plate (14) are movably arranged in the air outlet pipe (12).
3. The tobacco curing method according to claim 2, wherein a return air duct (2) is connected to one side of the lower high temperature chamber (3).
4. The tobacco curing method according to claim 2, wherein the water catching module (5) comprises a water catching fan (501), a heat regenerator (502) is installed on one side of the water catching fan (501) far away from the return air duct (2), and a water catching device (503) is installed on the other side of the heat regenerator (502).
5. The tobacco baking method according to claim 2, characterized in that a circulating fan (7) is arranged above the condenser (6), the circulating fan (7) is matched with an air outlet pipe (12) for use, an electric cabinet (9) is arranged above the compressor unit (8), the electric cabinet (9) is installed on a partition plate (24) between two normal temperature cabins (4), an outer fan (11) is arranged on one side of the evaporator (10), the outer fan (11) is installed on the machine case (1), and a foot pad (23) is installed at the bottom of the machine case (1).
6. The tobacco curing method according to claim 2, wherein two first limiting plates (16) are movably arranged on the outer ends of the filter plate (13) and the smell removal plate (14) relatively far away from one side, two second limiting plates (17) are arranged on the outer ends of the filter plate (13) and the smell removal plate (14) relatively close to one side, one ends of the first limiting plates (16) close to the second limiting plates (17) and two ends of the second limiting plates (17) are respectively and magnetically connected with a second magnetic block (19), and the first magnetic blocks (18) are arranged above and below the outer ends of the filter plate (13) and the smell removal plate (14).
7. The tobacco curing method as claimed in claim 6, characterized in that the second magnet (19) is mounted on the outer ends of the filter plate (13) and the smell removal plate (14), the first magnet (18) is mounted on the air outlet pipe (12), and the outer ends of the filter plate (13) and the smell removal plate (14) are respectively provided with a handle (15).
8. The tobacco roasting method according to claim 7, wherein the filter plate (13) and the smell removal plate (14) are respectively and movably connected with a mounting plate (20), a movable plate (21) is mounted inside one end of the mounting plate (20), a plurality of limiting springs (22) are mounted on the other side of the movable plate (21), the mounting plate (20) is arranged in the air outlet pipe (12), and the two movable plates (21) are respectively attached to the filter plate (13) and one end of the smell removal plate (14).
9. An internal circulation heat pump drying device for the tobacco baking method according to any one of claims 1 to 8, characterized in that the internal circulation heat pump drying device is formed by the requirement of two corresponding curves of dry bulb temperature and wet bulb temperature according to time in a baking room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211613310.1A CN115804464A (en) | 2022-12-15 | 2022-12-15 | Tobacco baking method and device based on internal circulation heat pump drying device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211613310.1A CN115804464A (en) | 2022-12-15 | 2022-12-15 | Tobacco baking method and device based on internal circulation heat pump drying device |
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| US4192323A (en) * | 1977-09-21 | 1980-03-11 | Gas-Fired Products, Inc. | Apparatus and method for automatically controlling curing conditions in a tobacco curing barn |
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| CN111829303A (en) * | 2020-07-13 | 2020-10-27 | 广州热之源科技有限公司 | Heat pump tobacco baking system and control method thereof |
| CN112985046A (en) * | 2021-02-04 | 2021-06-18 | 鹤山市雪尔达冷冻设备有限公司 | Heat pump drying device and lost foam drying method based on device |
| CN113324380A (en) * | 2021-06-08 | 2021-08-31 | 常州恒创热管理有限公司 | Air source heat pump type drying room |
| CN113455688A (en) * | 2021-07-22 | 2021-10-01 | 安徽中科自动化股份有限公司 | Control method for controlling cold air door to be opened through wet bulb temperature |
| CN113876009A (en) * | 2021-08-25 | 2022-01-04 | 青岛海尔空调电子有限公司 | Drying equipment control method and drying system |
| CN114370746A (en) * | 2022-01-13 | 2022-04-19 | 珠海格力电器股份有限公司 | Heat pump type tobacco dryer and control method thereof |
| CN114440572A (en) * | 2022-02-14 | 2022-05-06 | 珠海格力电器股份有限公司 | Control method of heat pump drying unit for tobacco drying and heat pump drying unit |
| CN114947160A (en) * | 2022-06-30 | 2022-08-30 | 河南省烟草公司平顶山市公司 | Tobacco leaf softening and aroma-enhancing baking method for internal circulation heat pump curing barn and application of tobacco leaf softening and aroma-enhancing baking method |
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2022
- 2022-12-15 CN CN202211613310.1A patent/CN115804464A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4192323A (en) * | 1977-09-21 | 1980-03-11 | Gas-Fired Products, Inc. | Apparatus and method for automatically controlling curing conditions in a tobacco curing barn |
| CN103099302A (en) * | 2013-03-06 | 2013-05-15 | 东莞市正旭新能源设备科技有限公司 | Intelligent energy-saving dehumidification integrated curing barn for curing tobaccos |
| CN110906698A (en) * | 2019-11-27 | 2020-03-24 | 中国农业科学院烟草研究所 | Intelligent temperature and humidity control method for tobacco curing barn with closed circulation heat pump |
| CN111829303A (en) * | 2020-07-13 | 2020-10-27 | 广州热之源科技有限公司 | Heat pump tobacco baking system and control method thereof |
| CN112985046A (en) * | 2021-02-04 | 2021-06-18 | 鹤山市雪尔达冷冻设备有限公司 | Heat pump drying device and lost foam drying method based on device |
| CN113324380A (en) * | 2021-06-08 | 2021-08-31 | 常州恒创热管理有限公司 | Air source heat pump type drying room |
| CN113455688A (en) * | 2021-07-22 | 2021-10-01 | 安徽中科自动化股份有限公司 | Control method for controlling cold air door to be opened through wet bulb temperature |
| CN113876009A (en) * | 2021-08-25 | 2022-01-04 | 青岛海尔空调电子有限公司 | Drying equipment control method and drying system |
| CN114370746A (en) * | 2022-01-13 | 2022-04-19 | 珠海格力电器股份有限公司 | Heat pump type tobacco dryer and control method thereof |
| CN114440572A (en) * | 2022-02-14 | 2022-05-06 | 珠海格力电器股份有限公司 | Control method of heat pump drying unit for tobacco drying and heat pump drying unit |
| CN114947160A (en) * | 2022-06-30 | 2022-08-30 | 河南省烟草公司平顶山市公司 | Tobacco leaf softening and aroma-enhancing baking method for internal circulation heat pump curing barn and application of tobacco leaf softening and aroma-enhancing baking method |
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