CN106288691B - Mixed heating type drying chamber - Google Patents
Mixed heating type drying chamber Download PDFInfo
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- CN106288691B CN106288691B CN201610884113.1A CN201610884113A CN106288691B CN 106288691 B CN106288691 B CN 106288691B CN 201610884113 A CN201610884113 A CN 201610884113A CN 106288691 B CN106288691 B CN 106288691B
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- 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
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention provides a hybrid heating type drying chamber, which integrates two heating modes of a kiln waste heat type and a gas type, adopts automatic control, saves energy and can ensure the stability of the temperature in the drying chamber. The system comprises a drying chamber, a heating system, a moisture discharge system and a control system, wherein the control system is in signal connection with the heating system and the moisture discharge system and is used for controlling the heating system and the moisture discharge system; a furnace body of the hot blast furnace is provided with a first air inlet, a second air inlet, a fresh air inlet and a circulating air outlet, a kiln waste heat air inlet pipe, a circulating air inlet pipe and the fresh air inlet pipe are respectively provided with a proportional air valve, and the circulating air outlet is provided with a circulating fan; the pressure stabilizing air port is communicated with the external space, and a one-way air valve and a proportional air valve are arranged at the pressure stabilizing air port.
Description
Technical Field
The invention relates to the field of drying technology and equipment, in particular to a mixed heating type drying chamber.
Background
The heating mode of the existing drying chamber is usually a kiln waste heat type or a gas type, and the traditional gas type drying chamber takes natural gas as fuel and realizes the heating of the drying chamber through the heat of the combustion of the natural gas. The air consumption of the drying chamber is large, and the operation cost is high. In the process of moisture removal, fresh air needs to be supplemented to maintain constant indoor pressure. The fresh air is outdoor low-temperature air, the temperature difference is caused to the indoor temperature after the fresh air enters the drying chamber, the blank quality is affected, the drying chamber needs to supplement the fresh air and then heat the fresh air, and the heating energy consumption can be increased.
The traditional waste heat type drying chamber takes the waste heat of a kiln as a heat source, is influenced by the waste heat and air quantity of the kiln, has fluctuation in heat supply capacity, and influences the drying and heating effect and the heating rate.
Disclosure of Invention
The invention provides a hybrid heating type drying chamber, which integrates two heating modes of a residual heat type kiln and a gas type heating mode, adopts automatic control, saves energy and can ensure the stability of the temperature in the drying chamber.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a mixed heating type drying chamber comprises a drying chamber, a heating system, a moisture discharging system and a control system, wherein the control system is in signal connection with the heating system and the moisture discharging system and is used for controlling the heating system and the moisture discharging system;
a first air inlet, a second air inlet, a fresh air inlet and a circulating air outlet are arranged on a stove body of the hot blast stove, one end of a kiln waste heat air inlet pipe is communicated with the first air inlet, the other end of the kiln waste heat air inlet pipe is communicated with the kiln, one end of the circulating air inlet pipe is communicated with the second air inlet, the other end of the circulating air inlet pipe is exposed in the drying chamber, one end of the fresh air inlet pipe is communicated with the fresh air inlet, the other end of the circulating air inlet pipe extends out of the drying chamber to enter an external space, and the circulating air outlet is exposed in the drying chamber; the burner is arranged at one end of the hot blast stove;
proportional air valves are arranged at the kiln waste heat air inlet pipe, the circulating air inlet pipe and the fresh air inlet pipe, and the circulating fan is arranged at the circulating air outlet; the pressure stabilizing air port is communicated with an external space, and the one-way air valve and the proportional air valve are installed at the pressure stabilizing air port.
Furthermore, the first air inlet and the second air inlet are arranged oppositely, and the fresh air inlet is arranged between the first air inlet and the second air inlet.
Furthermore, the first air inlet, the second air inlet and the fresh air inlet are all arranged close to the combustor; the circulating air outlet is arranged at one end far away from the combustor.
Furthermore, arrange the damp system and include row's damp wind gap, row's damp tuber pipe, arrange the damp fan and arrange the damp proportion blast valve, it sets up to arrange the damp fan the middle part of damp tuber pipe, arrange the both ends of damp tuber pipe and all be connected with arrange the damp wind gap, arrange the damp wind gap with the drying chamber intercommunication, it all is equipped with to arrange damp wind gap department arrange the damp proportion blast valve.
Further, still be equipped with the stirring dryer in the drying chamber, the stirring dryer includes dryer, fan and dryer motor, the dryer is big-end-up's drum, is equipped with a plurality of exhaust vents on its section of thick bamboo wall, the fan is installed the dryer top, the fan with the output shaft of dryer motor, the dryer motor drives the fan rotates.
Further, control system includes temperature and humidity sensor and PLC controller, temperature and humidity sensor sets up in the drying chamber, temperature and humidity sensor with the input signal connection of PLC controller, the output of PLC controller with the proportional air valve arrange damp proportion air valve one-way air valve circulating fan arrange damp fan and dryer motor signal connection.
Furthermore, a hot air pipeline is further arranged in the drying chamber, a plurality of air outlets are formed in the hot air pipeline, and the air outlets are communicated with the circulating air outlet.
Furthermore, the hot blast stove, the circulating fan, the moisture exhaust air pipe, the moisture exhaust fan and the moisture exhaust proportional air valve are all arranged outside the drying chamber.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:
firstly, the heating mode of the drying chamber can freely select a gas type, a waste heat type or a mixed type heating mode.
The kiln waste heat air pipe and the circulating air inlet pipe are close to the heater and are communicated with the hot blast stove simultaneously, a set of circulating fan system is shared, compared with the case that two sets of heating systems are used independently, a set of circulating fan system is saved, and the kiln waste heat can be directly reheated and heated in a mixed heating mode.
Third, the kiln afterheat air pipe, the circulating air inlet pipe, the fresh air inlet pipe and the moisture exhaust air pipe are provided with proportional air valves, when the drying chamber system operates, the logic control and the size control can be carried out on each pipeline system, the temperature and humidity control precision of the drying chamber is improved, and the drying quality is improved.
When the system is in a waste heat heating mode, the rotating speed of the circulating fan and the opening amount of the waste heat proportional valve are controlled through the frequency converter according to the temperature value fluctuation rate and the numerical value fluctuation detected by the system, and the indoor temperature is controlled; when the humidity in the drying chamber is too high, controlling the rotating speed of a moisture exhaust fan, a proportional air valve and a moisture exhaust proportional air valve at a fresh air inlet pipe through a frequency converter according to the humidity value fluctuation rate and the numerical value fluctuation size detected by the system, and controlling the indoor humidity; therefore, the automatic regulation and control of the temperature and the humidity in the drying chamber are realized, the drying chamber is more intelligent, and the fuel and the cost are saved.
And fifthly, the fresh air supplement opening is arranged on the hot blast stove, and when outdoor relatively low-temperature air enters the hot blast stove through the fresh air inlet, the hot blast stove can heat the fresh air, so that cold air is prevented from directly entering the drying chamber, the temperature of the indoor local area is prevented from greatly fluctuating, and the product quality is prevented from being influenced.
And sixthly, the fresh air preferentially supplemented in the mixed heating mode is hot air of the waste heat of the kiln, so that the condition that the blank quality is influenced due to obvious temperature difference inside the drying chamber is avoided. Because the waste heat of the kiln is used for heating the hot air, the additional heating of the hot air is not needed, the consumption of natural gas can be reduced, the energy is saved, and the fuel cost is reduced.
And the mixed heating mode preferentially adopts a kiln afterheat heating mode, so that the consumption of natural gas can be effectively reduced, the energy is saved, and the fuel cost is reduced.
And eighthly, the stirring wind barrel is arranged in the drying chamber, so that the air flowing speed in the drying chamber is increased, and the working efficiency of the drying chamber is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a front view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic diagram of the right side view of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Referring to fig. 1 to 3, a hybrid heating type drying chamber comprises a drying chamber 1, a heating system 2, a moisture discharge system 3 and a control system 4, wherein the control system 4 is in signal connection with the heating system 2 and the moisture discharge system 3 and is used for controlling the heating system 2 and the moisture discharge system 3, and the heating system 2 comprises a hot blast stove 20, a kiln waste heat air inlet pipe 21, a circulating air inlet pipe 22, a fresh air inlet pipe 23, a burner 24, a proportional air valve 25, a one-way air valve, a pressure stabilizing air port 27 and a circulating fan 28;
a first air inlet 200, a second air inlet 201, a fresh air inlet 203 and a circulating air outlet 204 are arranged on a furnace body of the hot blast furnace 20, one end of a kiln waste heat air inlet pipe 21 is communicated with the first air inlet 200, the other end of the kiln waste heat air inlet pipe is communicated with a kiln, one end of a circulating air inlet pipe 22 is communicated with the second air inlet 201, the other end of the circulating air inlet pipe is exposed in the drying chamber 1, one end of a fresh air inlet pipe 23 is communicated with the fresh air inlet 203, the other end of the fresh air inlet pipe extends out of the drying chamber 1 to enter an external space, and the circulating air outlet 204 is exposed in the drying chamber 1; the burner 24 is arranged at one end of the hot blast stove 20;
the kiln waste heat air inlet pipe 21, the circulating air inlet pipe 22 and the fresh air inlet pipe 23 are respectively provided with a proportional air valve 25, and the circulating fan 28 is arranged at the circulating air outlet 204; the pressure stabilizing air port 27 is communicated with the external space, and the one-way air valve and the proportional air valve 25 are arranged at the pressure stabilizing air port 27.
The first air inlet 200 and the second air inlet 201 are arranged oppositely, and the fresh air inlet 203 is arranged between the first air inlet 200 and the second air inlet 201.
The first air inlet 200, the second air inlet 201 and the fresh air inlet 203 are all arranged close to the burner 24; the circulating air outlet 204 is disposed at an end away from the burner 24.
Arrange damp system 3 and include row's damp wind gap 30, arrange damp tuber pipe 31, arrange damp fan 32 and arrange damp proportion blast valve 33, it sets up to arrange damp fan 32 arrange the middle part of damp tuber pipe 31, arrange the both ends of damp tuber pipe 31 and all be connected with arrange damp wind gap 30, arrange damp wind gap 30 with drying chamber 1 intercommunication, it all is equipped with to arrange damp wind gap 30 arrange damp proportion blast valve 33.
Still be equipped with stirring dryer 5 in the drying chamber 1, stirring dryer 5 includes dryer 50, fan 51 and dryer motor 52, dryer 50 is drum big-end-up, is equipped with a plurality of exhaust vents 53 on its section of thick bamboo wall, fan 51 is installed dryer 50 top, fan 51 with dryer motor 52's output shaft, dryer motor 52 drives fan 51 rotates.
Control system includes temperature and humidity sensor and PLC controller, temperature and humidity sensor sets up in the drying chamber 1, temperature and humidity sensor with PLC controller's input signal connection, PLC controller's output with proportional air valve 25, arrange damp proportion air valve 33 the one-way air valve circulating fan 28 arrange damp fan 32 and dryer motor 52 signal connection.
A hot air pipeline 10 is further arranged in the drying chamber 1, a plurality of air outlets 11 are arranged on the hot air pipeline 10, and the air outlets 11 are all communicated with the circulating air outlet 11.
The hot blast stove 20, the circulating fan 28, the moisture exhaust air pipe 31, the moisture exhaust fan 32 and the moisture exhaust proportional air valve 33 are all arranged outside the drying chamber 1.
The heating mode of the drying chamber 1 can select three modes of gas type, kiln waste heat type and mixed heating. The heating mode can be freely switched and selected according to the field requirement.
According to the invention, a temperature and humidity sensor is arranged at the middle roof inside the drying chamber 1, the indoor temperature and humidity value can be detected in real time, the detected value is fed back to a temperature and humidity instrument in real time, the temperature and humidity instrument transmits the fluctuation rate and the fluctuation value of the temperature and humidity value to a PLC (programmable logic controller) according to an operation program of the temperature and humidity instrument, the PLC controls 24 flame of a burner, the waste heat air quantity of a kiln and the moisture discharge quantity (the temperature rise rate and the hot air temperature are controlled through the size of the flame of the burner 24 (the size of the waste heat air quantity of the kiln), and the indoor humidity is controlled through the size of the moisture discharge air quantity, so that the temperature and humidity inside the drying chamber 1 are controlled.
The pressure stabilizing air port 27 is provided with a one-way air valve, and when the temperature rising mode by the waste heat of the kiln is adopted, in order to keep the air pressure in the drying chamber 1 constant, redundant air in the drying chamber 1 is removed, and meanwhile, outdoor air can be effectively prevented from entering the room; the circulating fan 28 and the moisture exhaust fan 32 adopt variable frequency fans, so that the rotation frequency of the fans can be adjusted at any time, and automatic control is realized; the fresh air inlet pipe 23 replenishes outdoor fresh air into the drying chamber 1 to replenish air lost when the moisture exhaust fan 32 works, so that the air pressure in the drying chamber 1 is ensured to be stable.
When only the gas type heating mode is adopted: the kiln waste heat proportional air valve 25 (namely the proportional air valve 25 at the first air inlet pipe) and the pressure stabilizing air port 27 are in a normally closed state, the proportional air valve 25 on the circulating air inlet pipe 22 (namely the proportional air valve 25 on the second air inlet pipe) in the drying chamber 1 is in a normally open state, and the circulating fan 28 is in a full-frequency working state. When the drying chamber 1 starts to be heated up, when the circulating fan 28 rotates at full frequency, negative pressure is formed in the hot blast stove 20, air in the drying chamber 1 enters the hot blast stove 20 through the circulating air inlet pipe 22 through the second air inlet 201, the burner 24 is ignited to heat the passing air, hot air is guided into the indoor hot air pipeline 10 through the circulating fan 28, and the hot air is conveyed to the indoor space through the hot air pipeline 10 and the air outlets 11 (the number of the air outlets 11 is multiple, so that the hot air can be rapidly discharged), so that the indoor temperature rise is realized; when the indoor temperature increases progressively, the blank temperature rises, the inside humidity of blank volatilizees to drying chamber 1 space in, and indoor humidity rises, and the proportional valve of row's damp proportion blast valve 33 and new trend import 203 department on row's damp tuber pipe 31 is opened this moment, arranges damp fan 32 and opens the operation, according to humidity fluctuation value and fluctuation rate size, arranges damp fan 32 converter automatic adjustment frequency, control fan rotational speed and proportional valve opening size.
When only the waste heat type heating mode of the kiln is adopted: the proportional air valve 25 on the circulating air pipe (i.e. on the second air inlet pipe) is in a normally closed state, and the kiln waste heat proportional air valve 25 (i.e. the proportional air valve 25 on the first air inlet pipe) and the proportional air valve 25 at the pressure stabilizing air port 27 are in an automatic control state. When the drying chamber 1 starts to heat up, the circulating fan 28 rotates, negative pressure is formed in the hot blast stove 20, hot air in the kiln waste heat pipe is sucked into the hot blast stove 20, the waste heat hot air is guided into the indoor hot air pipeline 10 through the hot blast stove 20 by the circulating fan 28, and the waste heat hot air is conveyed to the indoor through the air outlet 11 of the hot air pipeline 10, so that indoor temperature rise is achieved. In the temperature rise process, through an indoor temperature probe and a set temperature value, according to the proportional conversion of a temperature instrument, the system automatically controls the hot air quantity of the circulating air outlet 11 by controlling the numerical value of a frequency converter of the circulating fan 28 (controlling the air quantity of the circulating fan 28) and the opening degree of the kiln waste heat proportional air valve 25 (controlling the hot air quantity), so that the indoor overtemperature phenomenon is prevented. The system controls the opening of the pressure-stabilizing air port 27 and the proportional air valve 25 in a linkage manner according to the opening of the kiln waste heat proportional air valve 25, so that the air intake of the indoor kiln waste heat is equal to the air exhaust of the pressure-stabilizing air port 27, and the indoor constant pressure state is ensured. When the indoor temperature increases progressively, the blank temperature rises, the inside humidity of blank volatilizees to drying chamber 1 space in, and indoor humidity rises, and the row's damp tuber pipe 31 proportional valve is opened this moment, arranges damp fan 32 and opens the operation, according to humidity fluctuation value and fluctuation rate size, arranges damp fan 32 converter automatic adjustment frequency, control fan rotational speed and proportional valve opening size.
When the hybrid heating mode is adopted: the system adopts the working principle of heating by the waste heat of the kiln to heat up in the earlier stage of operation, and when the waste heat of the kiln can not meet the indoor temperature requirement, the heating system 2 automatically converts the heating by the waste heat of the kiln into a gas heating mode. The temperature rise process is accompanied with the moisture removal (namely the indoor humidity is discharged outside), the indoor is in negative pressure, at the moment, the opening degree of the air valve is automatically adjusted according to the moisture removal opening degree of the kiln waste heat proportional air valve 25 and/or the proportional air valve 25 at the fresh air pipe, and the indoor constant pressure is ensured. Because the fresh air supplemented in the moisture removal process is the hot air preheated by the kiln, the reheating of the hot air furnace 20 to the hot air can be cancelled or reduced, and the investment of fuel cost is effectively saved. And the fresh air inlet pipe 23 is designed near the burner 24, and fresh air is firstly heated by the burner 24 and then introduced into the drying chamber 1, so that the influence on the drying quality of the green body caused by the temperature difference between the introduced fresh air and the air in the drying chamber 1 can be avoided.
According to the heating mode, the principle of a kiln waste heat heating mode is firstly adopted for operation in the earlier stage, when an indoor temperature and humidity probe detects that the heating rate is reduced or the temperature value cannot meet the requirement of the drying chamber 1, a burner 24 in the hot blast stove 20 is automatically ignited to re-heat the kiln waste hot air, so that the temperature of the kiln waste hot air is increased, and the indoor heating rate and the temperature value are increased.
While the foregoing specification illustrates and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the precise forms disclosed herein and is not to be interpreted as excluding the existence of additional embodiments that are also intended to be encompassed by the present invention as modified within the spirit and scope of the invention as described herein. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a mix rising temperature formula drying chamber, includes drying chamber, intensification system, arranges damp system and control system, control system with the intensification system with arrange damp system signal connection, be used for control the intensification system with arrange damp system, its characterized in that: the temperature rising system comprises a hot blast stove, a kiln waste heat air inlet pipe, a circulating air inlet pipe, a fresh air inlet pipe, a burner, a proportional air valve, a one-way air valve, a pressure stabilizing air port and a circulating fan;
a first air inlet, a second air inlet, a fresh air inlet and a circulating air outlet are arranged on a stove body of the hot blast stove, one end of a kiln waste heat air inlet pipe is communicated with the first air inlet, the other end of the kiln waste heat air inlet pipe is communicated with the kiln, one end of the circulating air inlet pipe is communicated with the second air inlet, the other end of the circulating air inlet pipe is exposed in the drying chamber, one end of the fresh air inlet pipe is communicated with the fresh air inlet, the other end of the circulating air inlet pipe extends out of the drying chamber to enter an external space, and the circulating air outlet is exposed in the drying chamber; the burner is arranged at one end of the hot blast stove;
proportional air valves are arranged at the kiln waste heat air inlet pipe, the circulating air inlet pipe and the fresh air inlet pipe, and the circulating fan is arranged at the circulating air outlet; the pressure stabilizing air port is communicated with the external space, and the one-way air valve and the proportional air valve are installed at the pressure stabilizing air port.
2. A hybrid oven dryer as claimed in claim 1, wherein: the first air inlet and the second air inlet are arranged oppositely, and the fresh air inlet is arranged between the first air inlet and the second air inlet.
3. A hybrid oven dryer as claimed in claim 2, wherein: the first air inlet, the second air inlet and the fresh air inlet are arranged close to the combustor; the circulating air outlet is arranged at one end far away from the combustor.
4. A hybrid oven dryer as claimed in claim 3, wherein: the moisture discharging system comprises a moisture discharging air port, a moisture discharging air pipe, a moisture discharging fan and a moisture discharging proportion air valve, wherein the moisture discharging fan is arranged at the middle part of the moisture discharging air pipe, the two ends of the moisture discharging air pipe are connected with the moisture discharging air port, the moisture discharging air port is communicated with the drying chamber, and the moisture discharging air port is provided with the moisture discharging proportion air valve.
5. A hybrid oven dryer as claimed in claim 3, wherein: the drying chamber is internally provided with a stirring air duct, the stirring air duct comprises an air duct, a fan and an air duct motor, the air duct is a cylinder with a large top and a small bottom, the wall of the air duct is provided with a plurality of air outlet holes, the fan is arranged above the air duct, the fan is connected with an output shaft of the air duct motor, and the air duct motor drives the fan to rotate.
6. A hybrid oven dryer as claimed in claim 3, wherein: the control system comprises a temperature and humidity sensor and a PLC (programmable logic controller), the temperature and humidity sensor is arranged in the drying chamber and is in signal connection with the input end of the PLC, and the output end of the PLC is in signal connection with the proportional air valve, the moisture-discharging proportional air valve, the one-way air valve, the circulating fan, the moisture-discharging fan and the air duct motor.
7. A hybrid isothermal drying chamber according to any of claims 3 to 6, wherein: the drying chamber is also internally provided with a hot air pipeline which is provided with a plurality of air outlets, and the air outlets are communicated with the circulating air outlet.
8. A hybrid isothermal drying chamber according to any of claims 3 to 6, wherein: the hot blast stove, the circulating fan, the moisture exhaust air pipe, the moisture exhaust fan and the moisture exhaust proportional air valve are all arranged outside the drying chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610884113.1A CN106288691B (en) | 2016-10-10 | 2016-10-10 | Mixed heating type drying chamber |
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| CN201610884113.1A CN106288691B (en) | 2016-10-10 | 2016-10-10 | Mixed heating type drying chamber |
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| CN106288691A CN106288691A (en) | 2017-01-04 |
| CN106288691B true CN106288691B (en) | 2022-09-06 |
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| CN110981151B (en) * | 2019-11-18 | 2022-09-30 | 江苏天舒电器有限公司 | Negative pressure type heat pump closed sludge drying control system and control method |
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| CN103542711A (en) * | 2013-11-01 | 2014-01-29 | 烟台珈群高效节能设备有限公司 | Drying tunnel achieving reheating and pressurizing of circulating air |
| CN203642618U (en) * | 2013-12-31 | 2014-06-11 | 唐山梦牌瓷业有限公司 | Bathroom ceramic forming green body drying room |
| CN105222566A (en) * | 2015-10-30 | 2016-01-06 | 江门市达能环保节能科技有限公司 | A kind of heat pump drying system with dehumidifier and Waste Heat Reuse |
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| CN106288691A (en) | 2017-01-04 |
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