CN113418382A - Control method of energy-saving management dehumidification drying combined machine - Google Patents
Control method of energy-saving management dehumidification drying combined machine Download PDFInfo
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- CN113418382A CN113418382A CN202110689541.XA CN202110689541A CN113418382A CN 113418382 A CN113418382 A CN 113418382A CN 202110689541 A CN202110689541 A CN 202110689541A CN 113418382 A CN113418382 A CN 113418382A
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- 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
- F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
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- 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
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- 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
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- 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
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- 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
- F26B21/10—Temperature; Pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a control method of an energy-saving management dehumidification drying combined machine, which is characterized in that the temperature of an air inlet and an air outlet of each drying machine is detected, the opening degree of a matched electric valve can be controlled by monitoring the temperature difference between the air inlet and the air outlet, so that the flow of circulating gas of each drying machine is reduced, redundant gas is used for other drying machines, the drying efficiency is improved, and the drying time is shortened; and when the opening degree of the electric valve is reduced to a small opening degree or under the condition that part of the drying machines are not used, the output of the variable frequency fan is adjusted to reduce the total circulating gas flow, so that the heating power and the output power of the fan are saved.
Description
Technical Field
The invention relates to the technical field of dehumidification drying equipment, in particular to a control method of an energy-saving management dehumidification drying combined machine.
Background
At present, the conveying of the circulating gas is mainly carried out by a fixed-frequency fan, but the fixed-frequency conveying fan has the following big defects in use: regardless of the actual use capacity and the drying degree of the raw materials, the circulating air in the machine is always in a fixed high flow rate, and the larger the circulating air quantity is, the more the power consumption of heating output is.
Especially when one dehumidifier is used with a plurality of dryers, the dryers may dry different raw materials, and a certain dryer may be changing materials or a corresponding host machine is changing a mold, or several dryers may already start to supply dried raw materials circularly, and another dryer is still in an initial drying process, so that the drying capacity of each dryer which needs to be output at any time may be greatly different, if the machine always maintains the shape selection, the fixed circulation gas flow and the fixed ventilation aperture will cause very large energy consumption, how to ensure that the dryer is suitable for various application conditions and multi-raw material drying requirements of the dehumidification and drying combination machine, and how to maximally realize drying energy saving and improve drying efficiency is the problem which needs to be solved at present.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a control method of an energy-saving management dehumidification and drying combined machine, which is characterized in that the temperature of an air inlet and an air outlet of each dryer is detected, the opening of a matched electric valve can be controlled by monitoring the temperature difference between the air inlet and the air outlet, so that the circulating gas flow of each dryer is reduced, redundant gas is used for other dryers, the drying efficiency is improved, and the drying time is shortened; and when the opening degree of the electric valve is reduced to a small opening degree or under the condition that part of the drying machines are not used, the output of the variable frequency fan is adjusted to reduce the total circulating gas flow, so that the heating power and the output power of the fan are saved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the control method comprises the steps that a dehumidifier and a plurality of dryers are configured with a variable frequency fan, a first temperature sensor is mounted at an air inlet of each dryer, a second temperature sensor is mounted at an air outlet of each dryer, an air inlet connecting pipe is connected to an air outlet of the dehumidifier, electric valves with the same number as the dryers are arranged on the air inlet connecting pipe, a heating barrel is connected to each electric valve, the heating barrels are connected with the air inlets of the corresponding dryers, an air outlet connecting pipe is connected to the air inlet of the dehumidifier, and the air outlet connecting pipe is connected with the air outlets of the dryers respectively. And each dryer front end is equipped with a heating control panel;
the control method comprises the following steps:
after the energy-saving management dehumidification and drying combined machine is started, controlling a variable frequency fan of the dehumidifier to run at a high rotating speed;
controlling the operation opening of the electric valve according to the opening and closing condition of the heating control panel of the dryer;
detecting the temperature of an air inlet of each drier and comparing the temperature with a set drying temperature, and controlling the drying and heating output to heat the circulating gas;
after the electric valve is controlled to operate for a preset cycle judgment period, the temperature of the air inlet and the air outlet of each drier is detected to obtain the temperature difference between the air inlet and the air outlet;
circularly judging whether the temperature difference value of the air inlet and the air outlet of each drier is in a preset temperature range or not, and controlling the opening of an electric valve corresponding to the drier according to the judgment result to adjust the flow of the circulating gas;
and circularly judging and summarizing the opening conditions of the electric valves of the dryers, and controlling the output frequency of a variable frequency fan of the dehumidifier according to the calculation result to adjust the total circulating gas flow.
As a supplement to the technical scheme of the invention, the variable frequency fan of the dehumidifier runs at a high rotating speed after being started, and the running frequency of the variable frequency fan is controlled to be 60Hz at the high rotating speed.
As a supplement to the technical solution of the present invention, when the machine is started to operate, the method for controlling the operation opening of the electrically operated valve according to the opening and closing condition of the heating control panel of the dryer specifically includes:
when the heating control panel of the dryer is set to be started, the corresponding electric valve is controlled to maintain the large-opening-degree operation, and the large opening degree is full-opening;
when the heating control panel of the dryer is set to be shut down, the corresponding electric valve is controlled to maintain zero-opening operation, and the zero-opening is fully closed;
as a supplement to the technical solution of the present invention, the preset cycle determination period is less than or equal to 300 seconds.
As a supplement to the technical solution of the present invention, controlling the opening of the electric valve corresponding to the dryer according to the determination result to adjust the flow rate of the circulating gas specifically includes:
when the temperature difference value of the air inlet and the air outlet is greater than or equal to the upper limit of the preset temperature interval, controlling the corresponding electric valve to maintain large-opening-degree operation;
when the temperature difference value of the air inlet and the air outlet is smaller than the lower limit of the preset temperature interval, controlling the corresponding electric valve to operate at a small opening, wherein the small opening is half-open;
when the temperature difference value of the air inlet and the air outlet is smaller than the upper limit of the preset temperature interval and is larger than or equal to the lower limit of the preset temperature interval, and the temperature difference value of the air inlet and the air outlet is smaller than the temperature difference value of the previous time, controlling the opening degree of the corresponding electric valve to be smaller;
and when the temperature difference value of the air inlet and the air outlet is smaller than the upper limit of the preset temperature interval and is larger than or equal to the lower limit of the preset temperature interval, and the temperature difference value of the air inlet and the air outlet is larger than the temperature difference value of the previous time, controlling the opening degree of the corresponding electric valve to be increased.
As a supplement to the technical solution of the present invention, the output frequency of the variable frequency fan is calculated according to the following formula:
F＝F0-(A*1+B*0.5+C*0)/(A+B+C)*F1(ii) a Wherein F is calculatedFrequency-variable fan output frequency, F0The operation frequency of the variable frequency fan is set to be 60Hz when the rotation speed is high, F1 is set adjusting frequency (F1 is set to be equal to or larger than 20, the larger the numerical value is, the higher the energy-saving efficiency is, the smaller the numerical value is, the higher the drying efficiency is, and the preset frequency is required), A is the number of the dryers with large opening degree of the electric valve, B is the number of the dryers with neither large opening degree nor small opening degree of the electric valve, and C is the number of the dryers with small opening degree of the electric valve.
As a supplement to the technical scheme of the invention, the lower limit of the preset temperature interval is 15 ℃ +/-a, the upper limit of the preset temperature interval is 25 ℃ +/-a, wherein a is an environmental correction coefficient, and a is more than or equal to 0 ℃ and less than or equal to 5 ℃.
Has the advantages that: the invention relates to a control method of an energy-saving management dehumidification drying combined machine, which is characterized in that the temperature of an air inlet and an air outlet of each dryer is detected, the opening degree of a matched electric valve can be controlled by monitoring the temperature difference between the air inlet and the air outlet, so that the circulating gas flow of each dryer is reduced, redundant gas is used for other dryers, the drying efficiency is improved, and the purpose of saving energy can be achieved; and when the opening degree of the electric valve is reduced to a small opening degree or under the condition that part of the drying machines are not used, the output of the variable frequency fan is adjusted to reduce the total circulating gas flow, so that the heating power and the output power of the fan are saved. According to the invention, a plurality of dryers are combined for use, each dryer can be regulated and controlled in real time according to actual conditions, and the intelligent degree is higher.
Drawings
FIG. 1 is a diagram of the steps of the present invention;
FIG. 2 is a flow chart of the present invention;
fig. 3 is a schematic structural view of a combined dehumidifying and drying machine according to the present invention in a front view;
FIG. 4 is a schematic rear view of the dehumidification-drying combined machine of the present invention;
fig. 5 is a rear view of the dehumidification drying combined machine of the present invention.
The figure is as follows: 1. dehumidifier, 2, desiccator, 3, air inlet connecting pipe, 4, electric valve, 5, heating barrel, 6, first temperature sensor, 7, second temperature sensor, 8, air outlet connecting pipe, 9, cleaning door, 10, observation window, 11, vacuum suction hopper, 12, heating control panel, 13, suction box.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The embodiment of the invention relates to a control method of an energy-saving management dehumidification and drying combined machine, as shown in figures 1-5, the energy-saving management dehumidification and drying combined machine comprises a dehumidifier 1 provided with a variable frequency fan and a plurality of dryers 2, a first temperature sensor 6 is installed at the air inlet of each dryer 2, a second temperature sensor 7 is installed at the air outlet of each dryer 2, the air outlet of the dehumidifier 1 is connected with an air inlet connecting pipe 3, electric valves 4 with the same number as the dryers 2 are arranged on the air inlet connecting pipe 3, a heating barrel 5 is connected on each electric valve 4, the heating barrel 5 is connected with the air inlet of the corresponding dryer 2, the air inlet of the dehumidifier 1 is connected with an air outlet connecting pipe 8, the air outlet connecting pipes 8 are respectively connected with the air outlets of the dryers 2, the front ends of the dryers 2 are respectively provided with a heating control panel 12, the heating control panel 12 can control the on/off and power of the dryer 2 and the heating tub 5;
but the mid-mounting of 2 front ends of desiccator have clearance door 9 of switch, open clearance door 9 can be comparatively convenient clean and clearance desiccator 2 inside, clearance door 9 on seted up observation window 10, can be clear through observation window 10 see desiccator 2 inside, be convenient for inspection and maintenance.
The top of the dryer 2 is provided with a feeding hole, the feeding hole is provided with a vacuum suction hopper 11, the bottom of the dryer 2 is provided with a discharging hole, and the discharging hole is provided with a suction box 13.
The dehumidifier 1 is a frequency conversion dehumidifier. The dehumidifier 1, the dryer 2 and the heating barrel 5 are all existing devices in the market and can be directly purchased.
The control method comprises the following steps:
after the energy-saving management dehumidification and drying combined machine is started, controlling a variable frequency fan of the dehumidifier 1 to operate at a high rotating speed;
controlling the operation opening of the electric valve 4 according to the opening and closing condition of the heating control panel 12 of the dryer 2;
detecting the temperature of the air inlet of each drier 2 and comparing the temperature with the set drying temperature, and controlling the drying and heating output to heat the circulating gas;
after the electric valve 4 is controlled to operate for a preset cycle judgment period, the temperature of the air inlet and the air outlet of each drier 2 is detected to obtain the temperature difference between the air inlet and the air outlet;
circularly judging whether the temperature difference value of the air inlet and the air outlet of each drier 2 is in a preset temperature range or not, and controlling the opening of the electric valve 4 corresponding to the drier 2 according to the judgment result to adjust the flow of the circulating gas; the opening of the matched electric valve 4 can be controlled by detecting the temperature of the air inlet and the air outlet of each dryer 2 and monitoring the temperature difference between the air inlet and the air outlet, so that the circulating gas flow of each dryer 2 is reduced, and the redundant gas is used for other dryers 2, so that the drying efficiency is improved and the drying time is shortened;
and circularly judging and summarizing the opening conditions of the electric valves 4 of the dryers, and controlling the output frequency of the variable frequency fan of the dehumidifier 1 according to the calculation result so as to adjust the total circulating gas flow. When the opening degree of the electric valve 4 is reduced to a small opening degree or under the condition that part of the drying machine 2 is not used, the output of the variable frequency fan is adjusted to reduce the total circulating gas flow, so that the heating power and the output power of the fan are saved.
The frequency conversion fan of the dehumidifier 1 runs at a high rotating speed after being started, and the running frequency of the frequency conversion fan is controlled to be 60Hz when the rotating speed is high, so that the circulating gas flow rate higher than that of the fan (50Hz) under the same specification and standard working condition is obtained, and the initial drying efficiency is high.
When the machine is started to operate, the operation opening of the electric valve 4 is controlled according to the switching condition of the heating control panel 12 of the dryer 2, and the method specifically comprises the following steps:
when the heating control panel 12 of the dryer 2 is set to be started, the corresponding electric valve 4 is controlled to maintain the large-opening operation, and the large-opening operation is fully opened;
when the heating control panel 12 of the dryer 2 is set to be turned off, the electric valve 4 is controlled to maintain zero-opening operation, and the zero-opening operation is fully turned off.
The preset cycle judgment period is less than or equal to 300 seconds.
Controlling the opening degree of the electric valve 4 corresponding to the dryer according to the judgment result to adjust the flow rate of the circulating gas, and specifically comprising the following steps:
when the temperature difference value of the air inlet and the air outlet is greater than or equal to the upper limit of the preset temperature interval, controlling the corresponding electric valve 4 to maintain large-opening-degree operation;
when the temperature difference value of the air inlet and the air outlet is smaller than the lower limit of the preset temperature interval, controlling the corresponding electric valve 4 to operate at a small opening, wherein the small opening is half-open;
when the temperature difference value of the air inlet and the air outlet is smaller than the upper limit of the preset temperature interval and is larger than or equal to the lower limit of the preset temperature interval, and the temperature difference value of the air inlet and the air outlet is smaller than the temperature difference value of the previous time, controlling the opening degree of the corresponding electric valve 4 to be smaller;
and when the temperature difference value of the air inlet and the air outlet is smaller than the upper limit of the preset temperature interval and is larger than or equal to the lower limit of the preset temperature interval, and the temperature difference value of the air inlet and the air outlet is larger than the temperature difference value of the previous time, controlling the opening degree of the electric valve 4 to be increased.
Calculating the output frequency of the variable frequency fan according to the following formula: f ═ F0-(A*1+B*0.5+C*0)/A+B+C)*F1(ii) a Wherein F is the calculated output frequency of the variable frequency fan, F0The operating frequency of the variable frequency fan is preset to be 60Hz when the rotating speed is high, the F1 is set to be the adjusting frequency of 10-20, F1-20, the larger the numerical value is, the higher the energy-saving efficiency is, the smaller the numerical value is, the drying isThe higher the efficiency is, the preset is as required, A is the number of the dryers with the opening degree of the electric valve being large opening degree, B is the number of the dryers with the opening degree of the electric valve being neither large opening degree nor small opening degree, and C is the number of the dryers with the opening degree of the electric valve being small opening degree.
The lower limit of the preset temperature interval is 15 +/-a, the upper limit of the preset temperature interval is 25 +/-a, wherein a is an environment correction coefficient, and a is more than or equal to 0 ℃ and less than or equal to 5 ℃.
More preferably, through energy-saving management control of the combined dehumidifying and drying machine, the utilization efficiency of the machine can be improved, and the problems that when one dehumidifier is used in combination with a plurality of dryers 2, the plurality of dryers 2 may dry different raw materials, a certain dryer 2 may be changing materials or a corresponding host computer is changing a mold, or a plurality of dryers 2 may already start to circularly supply dried raw materials, and other dryers 2 are still in an initial drying process, and in an application occasion where the drying capacity required to be output by each dryer 2 at any time may be greatly different, the automatic opening adjustment of the electric valve 4 corresponding to the dryer 2 is adaptive to the frequency of the variable frequency fan of the dehumidifier, so that the drying energy saving can be realized to the maximum extent, and the drying efficiency can be improved.
Claims (9)
1. A control method of an energy-saving management dehumidification drying combined machine is characterized in that: the energy-saving management dehumidification and drying combined machine comprises a dehumidifier (1) provided with a variable frequency fan and a plurality of dryers (2), wherein the air inlet of each dryer (2) is provided with a first temperature sensor (6), the air outlet of each dryer (2) is provided with a second temperature sensor (7), the air outlet of the dehumidifier (1) is connected with an air inlet connecting pipe (3), the air inlet connecting pipe (3) is provided with electric valves (4) with the same number as the drying machines (2), each electric valve (4) is connected with a heating barrel (5), the heating barrel (5) is connected with the air inlet of the corresponding dryer (2), the air inlet of the dehumidifier (1) is connected with an air outlet connecting pipe (8), the air outlet connecting pipe (8) is respectively connected with the air outlets of the plurality of drying machines (2), the front ends of the dryers (2) are all provided with heating control panels (12);
the control method comprises the following steps:
after the energy-saving management dehumidification and drying combined machine is started, controlling a variable frequency fan of the dehumidifier (1) to run at a high rotating speed;
controlling the operation opening of the electric valve (4) according to the switching condition of a heating control panel (12) of the dryer (2);
detecting the temperature of an air inlet of each drier (2) and comparing the temperature with a set drying temperature, and controlling the drying and heating output to heat the circulating gas;
after the electric valve (4) is controlled to operate for a preset cycle judgment period, the temperature of the air inlet and the air outlet of each drier (2) is detected to obtain the temperature difference between the air inlet and the air outlet;
circularly judging whether the temperature difference value of the air inlet and the air outlet of each drier (2) is in a preset temperature range or not, and controlling the opening of an electric valve (4) corresponding to the drier (2) according to the judgment result to adjust the flow of the circulating gas;
and circularly judging and summarizing the opening degree condition of the electric valve (4) of each drier, and controlling the output frequency of a variable frequency fan of the dehumidifier (1) according to the calculation result to adjust the total circulating gas flow.
2. The control method of the energy-saving management dehumidification and drying combined machine according to claim 1, wherein: the frequency conversion fan of the dehumidifier (1) runs at a high rotating speed after being started, and the running frequency of the frequency conversion fan is controlled to be 60Hz at the high rotating speed.
3. The control method of the energy-saving management dehumidification and drying combined machine according to claim 1, wherein: when the machine is started to operate, the operation opening degree of the electric valve (4) is controlled according to the switching condition of the heating control panel (12) of the dryer (2), and the method specifically comprises the following steps:
when the heating control panel (12) of the dryer (2) is set to be started, the electric valve (4) is controlled to maintain the large-opening-degree operation, and the large opening degree is full-opening;
when the heating control panel (12) of the dryer (2) is set to be turned off, the electric valve (4) is controlled to maintain zero-opening operation, and the zero-opening operation is fully closed.
4. The control method of the energy-saving management dehumidification and drying combined machine according to claim 1, wherein: the preset cycle judgment period is less than or equal to 300 seconds.
5. The control method of the energy-saving management dehumidification and drying combined machine according to claim 1, wherein: controlling the opening degree of an electric valve (4) corresponding to the dryer according to the judgment result to adjust the flow rate of the circulating gas, and specifically comprising the following steps:
when the temperature difference value of the air inlet and the air outlet is greater than or equal to the upper limit of the preset temperature interval, controlling the corresponding electric valve (4) to maintain large-opening-degree operation;
when the temperature difference value of the air inlet and the air outlet is smaller than the lower limit of the preset temperature interval, controlling the corresponding electric valve (4) to operate at a small opening, wherein the small opening is half-open;
when the temperature difference value of the air inlet and the air outlet is smaller than the upper limit of the preset temperature interval and is larger than or equal to the lower limit of the preset temperature interval, and the temperature difference value of the air inlet and the air outlet is smaller than the temperature difference value of the previous time, controlling the opening degree of the corresponding electric valve (4) to be smaller;
and when the temperature difference value of the air inlet and the air outlet is smaller than the upper limit of the preset temperature interval and is larger than or equal to the lower limit of the preset temperature interval, and the temperature difference value of the air inlet and the air outlet is larger than the temperature difference value of the previous time, controlling the opening degree of the corresponding electric valve (4) to be increased.
6. The control method of the energy-saving management dehumidification and drying combined machine according to claim 1, wherein: calculating the output frequency of the variable frequency fan according to the following formula: f ═ F0-(A*1+B*0.5+C*0)/(A+B+C)*F1；
Wherein F is the calculated output frequency of the variable frequency fan, F0The operation frequency of the variable frequency fan at high rotating speed is F1 is set adjusting frequency, and A is the opening degree of the electric valveThe number of the dryers with large opening degree, the number of the dryers with the electric valve opening degree which is neither large opening degree nor small opening degree, B and the number of the dryers with the electric valve opening degree which is small opening degree.
7. The control method of the combined dehumidification and drying machine with energy conservation management as claimed in claim 6, wherein: the frequency range of the F1 is that F1 is more than or equal to 10 and less than or equal to 20, the larger the numerical value is, the higher the energy-saving efficiency is, the smaller the numerical value is, the higher the drying efficiency is, and the frequency is preset as required.
8. The control method of the combined dehumidification and drying machine with energy conservation management as claimed in claim 6, wherein: said F0Preset to 60 Hz.
9. The control method of the energy-saving management dehumidification and drying combined machine according to claim 1, wherein: the lower limit of the preset temperature interval is 15 +/-a, the upper limit of the preset temperature interval is 25 +/-a, wherein a is an environment correction coefficient, and a is more than or equal to 0 ℃ and less than or equal to 5 ℃.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114279185A (en) * | 2021-12-30 | 2022-04-05 | 江西竹楠木环保科技有限责任公司 | Bamboo chopstick drying method and system and storage medium |
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| CN111365977A (en) * | 2020-03-23 | 2020-07-03 | 顺德职业技术学院 | Control method of closed type variable frequency heat pump drying equipment |
| CN112833579A (en) * | 2021-01-22 | 2021-05-25 | 郑州大学 | Multi-mode heat pump tobacco curing system and control method thereof |
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| CN114279185A (en) * | 2021-12-30 | 2022-04-05 | 江西竹楠木环保科技有限责任公司 | Bamboo chopstick drying method and system and storage medium |
| CN114279185B (en) * | 2021-12-30 | 2023-06-30 | 江西竹楠木环保科技有限责任公司 | Bamboo chopstick drying method, system and storage medium |
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