LU500054B1 - Circulation drying device, and fire hose drying system and method - Google Patents
Circulation drying device, and fire hose drying system and method Download PDFInfo
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- LU500054B1 LU500054B1 LU500054A LU500054A LU500054B1 LU 500054 B1 LU500054 B1 LU 500054B1 LU 500054 A LU500054 A LU 500054A LU 500054 A LU500054 A LU 500054A LU 500054 B1 LU500054 B1 LU 500054B1
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C33/00—Hose accessories
- A62C33/02—Apparatus for cleaning or drying hoses
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Abstract
The present disclosure provides a circulation drying device, and a fire hose drying system and method, and relates to the field of drying equipment. The circulation drying device comprises a pipeline connected to a drying oven; an evaporator, a condenser and a fan are sequentially arranged inside the pipeline from a first end to a second end; at least one evaporator is arranged inside and outside the pipeline; the condenser cooperates with a compressor, expansion valves and all the evaporators to form a heat pump system; and the evaporators inside and outside the pipeline are connected to the condenser by different expansion valves, and operate at different time. The pipeline cooperates with the heat pump system to form a circulating air supply structure, the evaporators are configured inside and outside the pipeline, and heat is obtained from the outside of the pipeline during start, thereby achieving the effect of quick start to stable circulation state and reducing energy consumption.
Description
CIRCULATION DRYING DEVICE, AND FIRE HOSE DRYING SYSTEM AND HU500054
METHOD Field of the Invention The present disclosure relates to the field of drying equipment, and particularly to a circulation drying device, and a fire hose drying system and method.
Background of the Invention The statement of this section merely provides the background art related to the present disclosure, and does not necessarily constitute the prior art.
Fire hoses are an important facility. After a fire hose is used, a lot of water and stains remain on its surface. If the fire hose cannot be cleaned and dried in time, a humid environment may cause the fire hose to mildew and rot, which will reduce the loading capacity of the fire hose and shorten the service life of the fire hose.
The inventors discover, there are many drying equipment at present, which dry or air-dry fire hoses after use by means of heating or increasing the flow rate of air to achieve the purpose of quickly drying the fire hoses, but the present drying equipment are mostly open, so that hot air cannot be fully utilized, causing resource waste; some circulation air-drying equipment formed by a heat pump and a pipeline achieves drying by means of circulating air, but during initial operation, the environment in the pipeline restricts the heat absorption and release capabilities of the heat pump, causing long start time for the entire equipment to achieve stable circulation drying and causing high energy consumption; in addition, there is no special cleaning and drying equipment for fire hoses at present, so it is difficult to meet the requirements for comprehensive cleaning and drying of the fire hoses.
Summary of the Invention Aiming at the defects in the prior art, the objectives of the present disclosure are to provide a circulation drying device, and a fire hose drying system and method. A pipeline cooperates with a heat pump system to form a circulating air supply structure, evaporators are configured inside and outside the pipeline, and heat is obtained from the outside of the pipeline during start,
thereby achieving the effect of quick start to stable circulation state and reducing energy HU500054 consumption.
The first objective of the present disclosure is to provide a circulation drying device, which uses the following technical solution:
The circulation drying device includes a pipeline connected to a drying oven; an evaporator, a condenser and a fan are sequentially arranged inside the pipeline from a first end to a second end; at least one evaporator is arranged inside and outside the pipeline; the condenser cooperates with a compressor, expansion valves and all the evaporators to form a heat pump system; and the evaporators inside and outside the pipeline are connected to the condenser by different expansion valves, and operate at different time.
Further, the pipeline is a bent pipeline, the first end to the evaporator inside the pipeline is a first segment, the evaporator inside the pipeline to the condenser is a second segment, a cross structure is formed between the first segment and the second segment, and a heat recovery device is arranged at the cross position to indirectly exchange heat between media inside the first segment and the second segment.
Further, thermometers and humidity meters are arranged inside the first segment and the second segment of the pipeline corresponding to the inlets and outlets of the evaporators, and a thermometer and a humidity meter are also arranged between the condenser and the fan.
Further, the evaporator inside the pipeline cooperates with a condensate pan, and the condensate pan is connected with a water pipe for discharging the condensed water received by the condensate pan out of the pipeline.
The fan and the compressor respectively cooperate with a frequency converter, and the expansion valves are electronic expansion valves for adjusting refrigerant flow.
The second objective of the present disclosure is to provide a fire hose drying device, which uses the following technical solution: The fire hose drying device includes a drying oven and the above-mentioned circulation drying device, and the first end and the second end of the pipeline are respectively communicated with the drying oven.
Further, at least one rotatable support for carrying and driving a fire hose to rotate at different speeds is arranged in the drying oven.
Further, nozzles are arranged in the drying oven and toward the rotatable supports for spraying HU500054 water to flush the fire hose; and a collecting pipe for collecting water in the drying oven and delivering the water out of the drying oven is arranged at the bottom of the drying oven. The third objective of the present disclosure is to provide a fire hose drying method, which uses the above-mentioned fire hose drying system, including the following steps: the nozzles spraying water to the fire hose that rotates at a low speed on the rotatable supports, until the cleaning is completed, the rotatable supports rotating at a high speed to preliminarily dry the fire hose; starting the circulation drying device, the fan delivering the high-temperature and low-humidity air inside the pipeline to the drying oven; the air passing through the drying oven to re-dry the fire hose that rotates at a low speed on the rotatable supports, and the resulting low-temperature and high-humidity air being delivered to the circulation drying device via the first end for heating and dehumidification; until the fire hose is dried to the desired degree.
Further, when the circulation drying device is started, the evaporator outside the pipeline is first started to cooperate with the condenser to form a heat pump system for preheating inside the pipeline, and after the environment inside the pipeline reaches the desired temperature and humidity, the condenser is connected to the evaporator inside the pipeline to form a heat pump system.
Compared with the prior art, the advantages and positive effects of the present disclosure are: (1) The evaporators are arranged both inside and outside the pipeline and connected to the condenser at different time; in the start-up phase, the condenser is connected to the evaporator outside the pipeline, and heat is quickly obtained from the outside of the pipeline to preheat the environment inside the pipeline, thereby increasing the starting speed of the device; after the preheating is completed and the device operates stably, the condenser is connected to the evaporator inside the pipeline, thereby dehumidifying and heating the air inside the pipeline to meet the operation requirements of circulating air drying; (2) The bent pipeline forms a cross point, the heat recovery device is arranged at the cross point, and heat is exchanged by air at the inlet and condensed air, thereby achieving the effects of preliminarily cooling the air at the inlet and preliminarily heating the condensed air. The full use of heat exchange realizes quick cooling and quick heating, thereby improving the utilization HU500054 of heat and achieving the effect of saving energy; (3) By configuring the frequency converters and the electronic expansion valves, the air supply quantity, air supply temperature and evaporation temperature can be adjusted, thereby adjusting the drying speed to meet different requirements of the drying process; (4) The rotatable supports are arranged in the drying oven, the rotatable supports are rotated to cooperate with the nozzles to clean the fire hose, the rotation speed is adjusted to implement spin-drying so as to achieve preliminary drying of the fire hose, and the rotatable supports cooperate with the circulating air discharged by the circulation drying device to implement secondary drying so as to dry the fire hose thoroughly.
Brief Description of the Drawing The accompanying drawings constituting a part of the present disclosure are used for providing a further understanding of the present disclosure, and the schematic embodiments of the present disclosure and the descriptions thereof are used for interpreting the present disclosure, rather than constituting improper limitations to the present disclosure.
Fig. 1 is a schematic structural diagram showing that a circulation drying device in Embodiments 1, 2 and 3 of the present disclosure cooperates with a drying oven.
In the figure: 1.1: first evaporator, 1.2: second evaporator, 2: compressor, 3: condenser, 4: electronic expansion valve, 5: heat recovery device, 6: fan, 7: motor, 8: rotating shaft, 9: support, 10: nozzle, 11: condensate pan, 12: condensate pipe, 13: collecting pipe, 14: water supply pipe, 15: pipeline.
Detailed Description of Embodiments It should be noted that the following detailed descriptions are exemplary and are intended to provide further descriptions of the present disclosure.
All technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present disclosure belongs, unless otherwise indicated.
It should be noted that the terms used here are merely used for describing specific embodiments, but are not intended to limit the exemplary embodiments of the present invention.
As used herein, unless otherwise clearly stated in the context, singular forms are also intended to include HU500054 plural forms. In addition, it should also be understood that when the terms “contain” and/or “include” are used in the description, it indicates the presence of features, steps, operations, devices, ingredients, and/or combinations thereof.
5 For the convenience of description, the terms “upper”, “lower”, “left” and “right” in the present disclosure only indicate the upper, lower, left and right directions of the drawings, do not limit the structures, are only for the convenience of description and the simplification of description, do not indicate or imply that the devices or elements must have specific directions or be constructed and operated in specific directions, and therefore cannot be understood as limitations to the present disclosure.
As described in the background art, the circulating air drying equipment in the prior art achieves drying by means of circulating air, but during initial operation, the environment in the pipeline restricts the heat absorption and release capabilities of the heat pump, causing long start time for the entire equipment to achieve stable circulation drying and causing high energy consumption. Aiming at the above-mentioned problems, the present disclosure proposes a circulation drying device, and a fire hose drying system and method. Embodiment 1 In a typical embodiment of the present disclosure, as shown in Fig. 1, a circulation drying device is proposed.
The circulation drying device mainly includes a heat pump system, a pipeline, and monitoring elements. The pipeline is connected to an external drying oven, and cooperates with the drying oven to obtain circulating air. The heat pump system is installed with the pipeline, and a condenser and evaporators are utilized to implement condensation, water removal, heating and dehumidification in the pipeline.
Further, in order to improve energy utilization during pipeline operation, the pipeline is designed into a bent structure to form cross segments of the pipeline, and a heat recovery device is arranged at the cross segments to indirectly exchange heat between the two segments of the pipeline, so that the heat in air can be fully utilized.
The monitoring elements include a thermometer and a humidity meter. The thermometer and the humidity meter monitor the temperature and humidity in the pipeline, which facilitates the adjustment of operating parameters of the heat pump system. HU500054 It is important to indicate that the heat pump system includes at least two evaporators, a condenser, expansion valves and a compressor that cooperate with each other, and at least one evaporator is arranged inside and outside the pipeline; the evaporators are connected to the condenser by different expansion valves, and the evaporator inside the pipeline and the evaporator outside the pipeline operate at different time to cooperate with the condenser and the compressor respectively to form the heat pump system. Specifically, in this embodiment, the above scheme will be described in detail, taking the arrangement of one evaporator inside and outside the pipeline as an example.
The circulation drying device includes a pipeline 15, a fan 6, a first evaporator 1.1, a second evaporator 1.2, a compressor 2, a condenser 3, a first expansion valve, a second expansion valve, a condensate pan, and a heat recovery device 5; The first evaporator, the condenser and the fan are sequentially arranged inside the pipeline from a first end to a second end, and the second evaporator and the compressor are arranged outside the pipeline; The compressor, the condenser, the first expansion valve and the first evaporator are sequentially connected in series to form a first heat pump system, and the compressor, the condenser, the second expansion valve and the second evaporator are sequentially connected in series to form a second heat pump system; The first heat pump system and the second heat pump system operate at different time; in the start-up phase, the condenser is connected to the second evaporator outside the pipeline to operate the second heat pump system, and heat is quickly obtained from the outside of the pipeline to preheat the environment inside the pipeline, thereby increasing the starting speed of the device; After the preheating is completed and the device operates stably, the condenser is connected to the first evaporator inside the pipeline to operate the first heat pump system, thereby dehumidifying and heating the air inside the pipeline to meet the operation requirements of circulating air drying.
The fan and the compressor respectively cooperate with a frequency converter, and the expansion valves are electronic expansion valves for adjusting refrigerant flow;
The fan and the frequency converter are intended to adjust air supply quantity to achieve the HU500054 purpose of energy saving; In addition, even when the same material to be dried is dried, the initial air quantity is large to quickly reduce humidity, the subsequent air quantity is small to achieve sufficient drying, and the frequency converter can control the air quantity on demand, The compressor and the frequency converter are intended to adjust condensing pressure, thereby adjusting air supply temperature; The expansion valves are electronic expansion valves 4 for adjusting refrigerant flow, thereby adjusting evaporation temperature and then adjusting the speeds of cooling and dehumidification.
It could be appreciated that more evaporators can also be arranged, for example, at least two first evaporators are arranged inside the pipeline, and the first evaporators are connected to the condenser by different expansion valves, and cooperate with the condenser to achieve multi-level condensation of air inside the pipeline; the cooling capacity can also be controlled by opening different numbers of expansion valves; For example, at least two second evaporators are arranged outside the pipeline, and the second evaporators are connected to the condenser by different expansion valves, and cooperate with the condenser to achieve multi-level preheating of air inside the pipeline; the preheating speed is adjusted by opening different numbers of expansion valves; Of course, the number of the evaporators is not constant, as long as they are configured according to the requirements.
With regard to the arrangement of the heat recovery device, in this embodiment, the first end of the pipeline to the evaporator inside the pipeline is a first segment, the evaporator inside the pipeline to the condenser is a second segment, a cross structure is formed between the first segment and the second segment, and the heat recovery device is arranged at the cross position to indirectly exchange heat between media inside the first segment and the second segment; Of course, understandably, in the case of a long pipeline, a plurality of cross points can be formed between the first segment and the second segment, and heat recovery devices are arranged at the cross points respectively.
The increase in heat recovery devices arranged can increase the recovery quantity of heat.
It should be noted that, when the number of heat recovery devices is selected according to the HU500054 requirements, the installation difficulty and air flow loss caused by the cross pipeline also need to be considered. When the requirement for recovery quantity is met, the reduction in bends of the pipeline is beneficial to improving the flow efficiency of air in the pipeline, thereby improving the heat exchange efficiency of the heat pump. After considering both the heat recovery quantity and the heat exchange efficiency, the number of heat recovery devices is selected. The bent pipeline forms a cross point, the heat recovery device is arranged at the cross point, and heat is exchanged by air at the inlet and condensed air, thereby achieving the effects of preliminarily cooling the air at the inlet and preliminarily heating the condensed air. The full use of heat exchange realizes quick cooling and quick heating, thereby improving the utilization of heat and achieving the effect of saving energy.
With regard to the arrangement positions of the monitoring elements, in this embodiment, as shown in Fig. 1, thermometers and humidity meters are arranged inside the first segment and the second segment of the pipeline corresponding to the inlets and outlets of the evaporators, and a thermometer and a humidity meter are also arranged between the condenser and the fan. The monitoring elements monitor positions where the temperature and humidity change obviously inside the pipeline, and the operation conditions of airflow in the pipeline are adjusted to meet actual requirements.
In addition, a condensate pan 11 is configured for the discharge of condensed water at the first evaporator inside the pipeline, and the condensate pan is connected with a water pipe. In this embodiment, the water pipe is a condensate pipe 12 for discharging the condensed water received by the condensate pan out of the pipeline.
A corresponding condensate pan can also be configured for the second evaporator outside the pipeline, and the second evaporator can also be arranged above a water tank accommodating condensed water by means of a support, so that the condensed water directly drops into the water tank.
A box structure can also be added to the outside of the circulation drying device to achieve heat preservation and noise reduction during the operation of the circulation drying device.
The fan is arranged close to the second end of the pipeline, and delivers the air that passes through the condenser and undergoes heating and reduction of relative humidity to the drying HU500054 oven. The fan may be an axial flow fan or the like that is suitable for a pipeline structure, so that the pipeline cooperates with the drying oven to form circulating air.
The normal and stable operation process of the circulation drying device in this embodiment will be described in detail by means of temperature and humidity parameters.
After air is dried in the drying oven, the air enters the pipeline via the first end, the air at the first end has a temperature of 35°C, a relative humidity of 63.5% and a water content of 22.7 g/kg, the air then enters the heat recovery device 5 for heat exchange, the 35°C air flows up, the 21°C air flows to the left, and the two exchange heat indirectly; the 35°C air is turned to 30°C; The relative humidity is increased to 84%, and the 21°C air is turned to 24°C; The 30°C air enters the first evaporator 1.1 and undergoes a cooling and dehumidification process, and condensed water drops onto the condensate pan 11 and is discharged to the outside along a drain pipe; the 30°C air is turned to 21°C after passing through the first evaporator 1.1, its relative humidity is 100%, the water vapor in the air is condensed into water, and the moisture content is changed from 22.7 g/kg into 15.7 g/kg; the air flowing out of the first evaporator 1.1 enters the heat recovery device 5 and undergoes an indirect heat exchange process, its temperature is turned to 24°C, and its relative humidity is turned to 83.5%; The air flowing out of the heat recovery device 5 flows through the condenser 3 and undergoes an indirect heat exchange process, its temperature is turned to 52°C, and its relative humidity is turned to 18.25%; and then the air is compressed by the fan 5 and delivered to the outlet at the second end, and enters the drying oven to complete a cycle.
For the above process, see Fig. 1 and the following table. The monitoring data at five measuring points ABCDE is as follows: °C humidity content kJ/kg(a) % g/kg(a) pu 01e [wr [wn [>| + [es [wr [ee
It should be pointed out that the above process and parameters are exemplary. The measured values of parameters during the actual operation vary based on the operation condition. The operation condition of the entire circulation drying device can be mastered through the parameters at the measuring points, so as to provide a parameter basis for its adjustment. Embodiment 2 In another typical embodiment of the present disclosure, as shown in Fig. 1, a fire hose drying system is proposed.
The fire hose drying system includes a drying oven and the circulation drying device according to Embodiment 1, an air inlet and an air outlet of the drying oven are respectively communicated with the second end and the first end of the pipeline, and the circulation drying device cooperates with the oven to form a closed circulation drying system, which can quickly dry a fire hose.
A fire hose supporting structure and a cleaning structure are configured inside the drying oven, and at least one rotatable support for carrying and driving the fire hose to rotate at different speeds is arranged in the drying oven.
Nozzles 10 are arranged in the drying oven and toward the rotatable supports, and the nozzles are communicated with an external water supply pipe 14 and spray the water in the water supply pipe to flush the fire hose. A collecting pipe 13 for collecting water in the drying oven and delivering the water out of the drying oven is arranged at the bottom of the drying oven.
Specifically, the rotatable support includes a support 9, a rotating shaft 8, and a motor 7. The motor cooperates with the rotating shaft through a transmission mechanism to drive the support to rotate, and the support is a frame-type supporting structure.
The frame-type support can conveniently filter water in the fire hose during cleaning, and the water can smoothly flow out from the support during spin-drying and flushing. In addition, during secondary drying, the frame-type support can increase the area of contact between the air and the fire hose and reduce the occlusion of the fire hose.
Understandably, a plurality of nozzles is adopted to flush the fire hose from multiple directions, thereby improving the cleaning capability. The bottom of the drying oven is an inclined bottom,
which facilitates water collection. The lowest position of the bottom is connected to the HU500054 collecting pipe to discharge the water to the outside. The number of rotatable supports can be selected according to the number of fire hoses that need to be dried in the same batch, and the specific number is not limited here.
It should be pointed out that the motor 7 is a variable frequency motor, which can reduce the speeds of the rotating shaft and the support during cleaning to thoroughly clean the fire hose with water, increase the speeds during spin-drying to improve the water discharge capability, and reduce the speeds again during drying to facilitate sufficient contact between the air and the surface of the fire hose to improve the drying efficiency.
The rotatable supports are arranged in the drying oven, the rotatable supports are rotated to cooperate with the nozzles to clean the fire hose, the rotation speed is adjusted to implement spin-drying so as to achieve preliminary drying of the fire hose, and the rotatable supports cooperate with the circulating air discharged by the circulation drying device to implement secondary drying so as to dry the fire hose thoroughly.
Embodiment 3 In still another typical embodiment of the present disclosure, as shown in Fig. 1, a fire hose drying method is proposed, using the fire hose drying device according to Embodiment 2.
The nozzles spray water to the fire hose that rotates at a low speed on the rotatable supports, until the cleaning is completed, The rotatable supports rotate at a high speed to preliminarily dry the fire hose; When the circulation drying device is started, the evaporator outside the pipeline is first started to cooperate with the condenser to form a heat pump system for preheating inside the pipeline, and after the environment inside the pipeline reaches the desired temperature and humidity, the condenser is connected to the evaporator inside the pipeline to form a heat pump system; The fan delivers the high-temperature and low-humidity air inside the pipeline to the drying oven, The air passes through the drying oven to re-dry the fire hose that rotates at a low speed on the rotatable supports, and the resulting low-temperature and high-humidity air is delivered to the circulation drying device via the first end for heating and dehumidification; Until the fire hose is dried to the desired degree.
Specifically, in this embodiment, after the circulation drying device is started, the refrigerant HU500054 passes through the second evaporator to raise the temperature of air inside the pipeline; and after the temperature inside the pipeline reaches 52°C, the refrigerant no longer passes through the second evaporator, but passes through the first evaporator to achieve the purpose of cooling and dehumidification.
Described above are merely preferred embodiments of the present application, and the present application is not limited thereto.
Various modifications and variations may be made to the present application for those skilled in the art.
Any modification, equivalent substitution, improvement or the like made within the spirit and principle of the present application shall fall into the protection scope of the present application.
Claims (10)
1. À circulation drying device, comprising a pipeline, wherein an evaporator, a condenser and a fan are sequentially arranged inside the pipeline from a first end to a second end; at least one evaporator is arranged inside and outside the pipeline; the condenser cooperates with a compressor, expansion valves and all the evaporators to form a heat pump system; and the evaporators inside and outside the pipeline are connected to the condenser by different expansion valves, and operate at different time.
2. The circulation drying device according to claim 1, wherein the pipeline 1s a bent pipeline, the first end to the evaporator inside the pipeline is a first segment, the evaporator inside the pipeline to the condenser is a second segment, a cross structure is formed between the first segment and the second segment, and a heat recovery device is arranged at the cross position to indirectly exchange heat between media inside the first segment and the second segment.
3. The circulation drying device according to claim 2, wherein thermometers and humidity meters are arranged inside the first segment and the second segment of the pipeline corresponding to the inlets and outlets of the evaporators, and a thermometer and a humidity meter are also arranged between the condenser and the fan.
4. The circulation drying device according to claim 1, wherein the evaporator inside the pipeline cooperates with a condensate pan, and the condensate pan is connected with a water pipe for discharging the condensed water received by the condensate pan out of the pipeline.
5. The circulation drying device according to claim 1, wherein the fan and the compressor respectively cooperate with a frequency converter, and the expansion valves are electronic expansion valves for adjusting refrigerant flow.
6. A fire hose drying system, comprising a drying oven and the circulation drying device according to any one of claims 1-5, wherein the first end and the second end of the pipeline are respectively communicated with the drying oven.
7. The fire hose drying system according to claim 6, wherein at least one rotatable support for carrying and driving a fire hose to rotate at different speeds is arranged in the drying oven.
8. The fire hose drying system according to claim 7, wherein nozzles are arranged in the drying oven and toward the rotatable supports for spraying water to flush the fire hose; and a collecting pipe for collecting water in the drying oven and delivering the water out of the drying oven is HU500054 arranged at the bottom of the drying oven.
9. A fire hose drying method, using the fire hose drying system according to claim 8, comprising the following steps: the nozzles spraying water to the fire hose that rotates at a low speed on the rotatable supports, until the cleaning is completed, the rotatable supports rotating at a high speed to preliminarily dry the fire hose; starting the circulation drying device, the fan delivering the high-temperature and low-humidity air inside the pipeline to the drying oven; the air passing through the drying oven to re-dry the fire hose that rotates at a low speed on the rotatable supports, and the resulting low-temperature and high-humidity air being delivered to the circulation drying device via the first end for heating and dehumidification; until the fire hose is dried to the desired degree.
10. The fire hose drying method according to claim 9, wherein when the circulation drying device is started, the evaporator outside the pipeline is first started to cooperate with the condenser to form a heat pump system for preheating inside the pipeline, and after the environment inside the pipeline reaches the desired temperature and humidity, the condenser is connected to the evaporator inside the pipeline to form a heat pump system.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468559.2A CN111569344B (en) | 2020-05-28 | 2020-05-28 | Circulating drying device, fire hose drying system and method |
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| LU500054B1 true LU500054B1 (en) | 2021-10-19 |
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| CN (1) | CN111569344B (en) |
| LU (1) | LU500054B1 (en) |
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| CN111569344B (en) * | 2020-05-28 | 2021-09-17 | 青岛理工大学 | Circulating drying device, fire hose drying system and method |
| CN114788941B (en) * | 2022-04-29 | 2023-04-07 | 青岛理工大学 | Fire hose drying cabinet and drying system |
| CN117249609B (en) * | 2023-11-20 | 2024-02-06 | 东净(厦门)能源有限公司 | Direct expansion type low-temperature low-humidity air treatment unit |
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| CN110799695A (en) * | 2018-11-14 | 2020-02-14 | 广东美的白色家电技术创新中心有限公司 | Closed heat pump clothes dryer system |
| CN109489382A (en) * | 2018-11-28 | 2019-03-19 | 青岛理工大学 | A kind of fire hose drying device based on heat pump and the auxiliary heat of electricity |
| CN209548583U (en) * | 2018-11-29 | 2019-10-29 | 李鑫 | A kind of electrodynamic type fire hose airing frame |
| CN210409332U (en) * | 2019-07-23 | 2020-04-28 | 天津冰峰消防技术发展有限公司 | Fire hose belt cleaning device |
| CN210569818U (en) * | 2019-09-27 | 2020-05-19 | 上海澈慧环保科技有限公司 | Novel biomass or sludge particle drying device |
| CN111023790A (en) * | 2019-12-25 | 2020-04-17 | 天津商业大学 | Chinese herbal medicine heat pump drying system with heat pipe heat regenerator |
| CN111569344B (en) * | 2020-05-28 | 2021-09-17 | 青岛理工大学 | Circulating drying device, fire hose drying system and method |
| CN111743186A (en) * | 2020-06-12 | 2020-10-09 | 洛阳双瑞特种装备有限公司 | Energy-saving tobacco drying system |
-
2020
- 2020-05-28 CN CN202010468559.2A patent/CN111569344B/en active Active
- 2020-09-25 WO PCT/CN2020/117752 patent/WO2021237998A1/en active Application Filing
- 2020-09-25 LU LU500054A patent/LU500054B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| CN111569344A (en) | 2020-08-25 |
| CN111569344B (en) | 2021-09-17 |
| WO2021237998A1 (en) | 2021-12-02 |
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