CN109780644B - Replacement type recirculating ventilation cluster system - Google Patents
Replacement type recirculating ventilation cluster system Download PDFInfo
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- CN109780644B CN109780644B CN201711131352.0A CN201711131352A CN109780644B CN 109780644 B CN109780644 B CN 109780644B CN 201711131352 A CN201711131352 A CN 201711131352A CN 109780644 B CN109780644 B CN 109780644B
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- 238000009423 ventilation Methods 0.000 title claims abstract description 40
- 230000003134 recirculating effect Effects 0.000 title claims abstract description 7
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 25
- 231100000719 pollutant Toxicity 0.000 claims abstract description 25
- 238000007664 blowing Methods 0.000 claims description 37
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 239000000428 dust Substances 0.000 abstract description 28
- 230000008520 organization Effects 0.000 abstract description 4
- 238000004887 air purification Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 68
- 239000007789 gas Substances 0.000 description 18
- 239000000356 contaminant Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000443 aerosol Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to the technical field of dust removal equipment, in particular to a replacement type recirculating ventilation cluster system. The main technical scheme is as follows: the replaceable recirculating ventilating cluster system is characterized in that a plurality of replaceable filtering ventilating units which are connected in series or in parallel or independent of each other are arranged in a factory building, and the replaceable filtering ventilating units adopt a ventilating and dedusting mode of upper air inlet and lower air outlet. The fresh air exchange device is arranged at the top of the factory building. The replacement type filtering ventilation unit comprises a shell, wherein the shell comprises a pollutant gas channel, a filter cartridge and a clean gas channel, an air inlet is formed in the upper part of the shell, and an air supply outlet is formed in the lower part of the shell; the filter cylinder is arranged on the inner side of the air inlet, the outlet of the filter cylinder is connected to the clean gas channel, and the tail end of the clean gas channel is connected to the air supply opening. The invention provides a replacement type filtering and ventilating unit device and a cluster reasonable installation and arrangement of a high-large-space fresh air exhaust energy exchange device, which realize the airflow organization function of replacement type air purification and ventilation which can be achieved only by a general large centralized system.
Description
Technical Field
The invention relates to a replacement type recirculation ventilation cluster system, and belongs to the technical field of dust removal equipment.
Background
With the development of new technology and new technology, dust pollutants are converted from a great amount of dust fall in the past to increasingly difficult to treat breathing dust, and dense and great amounts of small-particle-size pollution dust and aerosol with the particle size of 0.1-2.0 μm generated by many industrial enterprise technologies also bring about a plurality of industrial enterprise factory environment pollution problems and industrial building interior environment pollution problems, such as smoke pollution, chemical pollution and other various toxic and harmful gas pollution of the factory interior environment. These contaminations seriously affect and jeopardize the health of the practitioner, which can lead to various disease risks and even life threatening. The consequence of serious pollution has caused problems of medical burden and insufficient staff for a large number of enterprises, and seriously affects production; the dust-calling pollutant in the factory building leaks and ventilates through doors and windows and discharges and causes huge negative influence to ambient air PM2.5 again, traditional industrial enterprise ventilation mode mainly by following several:
and (one) utilizing a roof ventilator to perform natural ventilation mode.
Disadvantages: when the emission amount of pollutants is high, the requirement of ventilation times cannot be met. The heat loss of the heating building in winter is huge, so natural ventilation cannot be realized in winter.
And secondly, mechanically exhausting air by using a roof ventilator.
Disadvantages: the collecting height of the dust-calling aerosol is usually below 6.5m, and the ventilation of the roofs of buildings above 8m cannot solve the lifting and ventilation of dust-calling pollutants in a working area, and the dust-calling aerosol is also used for wasting a large amount of heating energy resources in northern heating areas in winter, so that the heating effect cannot be ensured, and the dust-calling aerosol cannot be started in winter.
And thirdly, adding a huge pipeline ventilation system to perform forced circulation filtering ventilation.
Disadvantages: the huge exhaust system collects and filters the polluted air in each working area, and then the polluted air is uniformly sent to the working areas through the huge air supply system, 75% of the energy of the air blower is used for conveying the ventilation air flow back and forth, so that a large amount of energy consumption is caused, and furthermore, because the arrangement of the air duct system is limited by the structure, a plurality of air exhaust and air supply blind areas exist, namely, the polluted areas cannot be controlled. In addition, the large-area centralized control has higher ventilation cost for small-scale production or overtime.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a reasonable installation and arrangement of a replacement type filtering ventilation unit device and a high-large-space fresh air exhaust energy exchange device cluster, and realizes the airflow organization function of replacement type air purification ventilation which can be achieved only by a general large centralized system.
The technical scheme of the invention is as follows: the replaceable recirculating ventilating cluster system is characterized in that a plurality of replaceable filtering ventilating units which are connected in series or in parallel or independent of each other are arranged in a factory building, and the replaceable filtering ventilating units adopt a ventilating and dedusting mode of upper air inlet and lower air outlet.
Further, the fresh air exchange device is arranged at the top of the factory building.
Further, the replacement type filtering ventilation unit comprises a shell, wherein the shell comprises a pollutant gas channel, a filter cartridge and a clean gas channel, an air inlet is formed in the upper part of the shell, and an air supply outlet is formed in the lower part of the shell; the filter cylinder is arranged on the inner side of the air inlet, the outlet of the filter cylinder is connected to the clean gas channel, and the tail end of the clean gas channel is connected to the air supply opening. The pollutant gas channel is a channel between the shell and the filter cartridge and between the shell and the clean gas channel.
Further, a back blowing system and a fan are arranged in the clean gas channel.
Further, a converging injection pipe is arranged between the filter cylinder and the clean gas channel, the back blowing system comprises a back blowing air bag and a back blowing pipe, the back blowing pipe is provided with an injection port, and the injection port is positioned below the inner part of the converging injection pipe.
Further, the fan is a variable frequency fan.
Further, the filter cartridge is downward in opening.
Further, a surface cooler is arranged above the fan.
Further, a pollutant flow channel module is arranged in the clean gas channel and consists of a pollutant flow channel module structure body and an outer box plate of the air conditioning dust remover;
the pollutant flow channel module structure body comprises a saddle-shaped top plate and a side plate which are connected with each other, the side edges of the side plate are obliquely arranged and connected with the ash guide plate, and the bottoms of the side plate and the ash guide plate are connected with the ash receiving groove; the back-blowing air bag is fixed in the sharp corner of the saddle-shaped top plate, the back-blowing pipe is connected below the back-blowing air bag, and the surface cooler and the blower are fixed between the side plates.
Furthermore, an ash collecting vehicle is arranged below the ash receiving groove.
The beneficial effects of the invention are as follows:
(1) The dust removing and filtering part of the invention adopts a surface film coated filter cylinder filter medium with higher filtering efficiency, the filtering efficiency of dust with more than 0.3 μm is more than 99.9%, the dust removing and filtering part can automatically back-blow and self-clean, is not limited by dust holding amount, and can continuously and effectively filter dust and flue gas in a welding factory building.
(2) When the circulating air quantity is designed equally, the invention improves the ventilation times by one time compared with the traditional replacement ventilation method, namely, if the traditional replacement ventilation reaches 2 times, the invention can reach 4 times of ventilation times when the circulating air quantity is the same, and the energy consumption is more than 70% compared with the traditional replacement ventilation method because no transmission power is used; under the calculation method of the circulating air volume of the same pollutant occurrence amount, the circulating air volume of collecting pollutants by arranging an air outlet at a proper height is 80% of the circulating air volume of arranging the air outlet outside the safety distance of a crown block bridge at the top of a workshop, and the air volume selection parameter of a fan is reduced by 20%.
(3) The high-large-space fresh air exchange device is flexible in fresh air arrangement, performs high-efficiency energy conversion with exhaust air, and is combined with the replacement type filtering ventilation unit device to realize the non-blind area air supply and exhaust airflow organization of the whole workshop, so that the purifying ventilation effect is optimal.
(4) The disposable investment is low, the operation cost is low, the operation control is convenient and flexible for any group, the independent control can be realized, and the maintenance is convenient for any group.
Drawings
FIG. 1 is a front view of a replacement filter ventilation unit;
FIG. 2 is a cross-sectional view A-A of a front view of a replacement filter ventilation unit during start-up operation;
FIG. 3 is a cross-sectional view A-A of the front view of the replacement filter ventilation unit when shut down or back-blowing;
FIG. 4 is a side view of a replacement filter ventilation unit;
FIG. 5 is a section B-B of a side view of a replacement filter ventilation unit;
FIG. 6 is a cross-sectional view of a replaceable filter ventilation unit manifold;
FIG. 7 is an S-view of FIG. 6;
FIG. 8 is a top view of a replacement filter ventilation unit;
FIG. 9 is a perspective view of a replacement filter ventilation unit;
FIG. 10 is a perspective view of a contaminant flow path module;
FIG. 11 is a partial schematic view of a contaminant flow channel module 1;
FIG. 12 is a partial schematic view of a contaminant flow channel module 2;
FIG. 13 is a front view of a contaminant flow path module;
FIG. 14 is a side view of a contaminant flow channel module;
FIG. 15 is a section C-C of FIG. 14;
FIG. 16 is a top view of a contaminant flow channel module;
FIG. 17 is a layout of a replacement recirculation ventilation cluster system;
fig. 18 is a cross-sectional view of a replacement recirculated plenum cluster system.
Wherein: 1. the device comprises a shell, 2, an air inlet, 3, a filter cartridge, 4, a converging injection pipe, 5, a back-blowing air bag, 6, a back-blowing pipe, 7, a surface cooler, 8, a fan, 9, an air supply outlet, 10, an ash collecting vehicle, 11, an injection port, 12, a vibration ash cleaner, 13, an outer box plate, 14, a pollutant flow channel module structure body, 141, a saddle-shaped top plate, 142, a side plate, 143, an ash guide plate, 144, an ash receiving groove, 15, a fresh air exchange device, 16 and a replacement type filtering ventilation unit.
Detailed Description
The invention is further described with reference to the following detailed description and the accompanying figures 1-18:
the replaceable recirculating ventilating cluster system is characterized in that a plurality of replaceable filtering ventilating units 16 which are connected in series or in parallel or independent of each other are arranged in a factory building, and the replaceable filtering ventilating units 16 adopt a ventilating and dedusting mode of upper air inlet and lower air outlet. Also comprises a fresh air exchange device 15 arranged at the top of the factory building. The replacement type filtering and ventilating unit 16 comprises a shell 1, wherein the shell 1 comprises a pollutant gas channel, a filter cylinder 3 and a clean gas channel, the upper part of the shell 1 is provided with an air inlet 2, and the lower part of the shell is provided with an air supply outlet 9; the filter cartridge 3 is arranged on the inner side of the air inlet 2, the outlet of the filter cartridge 3 is connected to a clean gas channel, and the tail end of the clean gas channel is connected to the air inlet 9. A back-blowing system and a fan 8 are arranged in the clean gas channel. The filter cartridge 3 and the clean gas channel are provided with a converging injection pipe 4, the back blowing system comprises a back blowing air bag 5 and a back blowing pipe 6, the back blowing pipe 6 is provided with an injection port 11, and the injection port 11 is positioned below the inner part of the converging injection pipe 4. The fan 8 is a variable frequency fan. The filter cylinder 3 is opened downwards. And a surface cooler 7 is arranged above the fan 8. The clean gas channel is internally provided with a pollutant flow channel module which consists of a pollutant flow channel module structure body 14 and an air conditioning dust remover outer box plate 13; the pollutant flow channel module structure body 14 comprises a saddle-shaped top plate 141 and a side plate 142 which are connected with each other, the side edges of the side plate 142 are obliquely arranged and connected with an ash guide plate 143, and the bottoms of the side plate 142 and the ash guide plate 143 are connected with an ash receiving groove 144; the back-blowing air bag 5 is fixed in the sharp corner of the saddle-shaped top plate 141, the back-blowing pipe 6 is connected below the back-blowing air bag 5, and the surface cooler 7 and the fan 8 are fixed between the side plates 142. The ash collecting vehicle 10 is arranged below the ash receiving groove 144. The gas channel of the pollutant flow channel module is internally provided with a vibration ash cleaner 12.
When the device is operated, a negative pressure area can be formed in the cavity of the device by the operation of the fan 8, air to be purified in a welding factory is continuously captured and sucked into the device, the air flow firstly enters the cavity of the device through the return air type self-hanging louver, part of pollutant dust is collided with the return air type self-hanging louver and directly falls into the ash guiding groove 144, the other part of pollutant dust is filtered by the filter cylinder 3, dust particles and welding smoke dust are blocked or adsorbed on the surface of an external coating film of the filter cylinder 3, the filtering efficiency of the filter cylinder 3 for dust with the particle size of more than 0.3 mu m is more than 99.9%, clean air entering the clean area is subjected to heat-moisture exchange with freezing (heating) circulating water in the surface cooler 7 after passing through the converging injection pipe 4, and the surface cooler 7 is subjected to low-wind speed uniform conveying to the factory area through the replacement air supply opening 9 by the fan 8 after the temperature and humidity reduction (or heating) treatment.
When the device runs for a period of time, a lot of dust adheres to the outer wall of the filter cylinder 3, the pressure difference between the front and the rear of the filter cylinder 3 increases, the power consumption is increased, at this time, a back blowing system is automatically started to carry out back blowing ash removal on the filter cylinder 3, the back blowing system mainly comprises a back blowing air bag 5 and a back blowing pipe 6, when back blowing is carried out, the system can control an electromagnetic valve on the air bag to be opened, as compressed air with the pressure of 0.5-0.6MPa is stored in the back blowing air bag 5, the back blowing air can be sprayed out from a spraying port 11 of the back blowing pipe 6 at supersonic speed, when the back blowing air flows through a converging injection pipe 4 with Venturi effect, a large amount of air flow can be injected into the converging injection pipe 4 and accelerated to diffuse into a cavity of the filter cylinder 3, air flow impact and vibration are formed on the filter cylinder 3, part of the air flow can be reversely discharged (from the inside of the filter cylinder 3 to the outside of the filter cylinder 3), and dust cake adhered to the outer surface of the filter cylinder 3 can be removed, and the dust and dust cake fall on the dust guide plate 143 and are converged at two sides and the ash receiving groove 144, so that the ash removal purpose is achieved; at this time, the return air type self-hanging shutter installed at the air inlet 2 of the device can completely shield the reverse air flow to prevent dust from leaking out of the unit device. The cleaned dust passes through the two sides of the unit equipment to be converged into the dust collecting truck 10 at the bottom of the unit equipment, and the dust collecting truck 10 is arranged on the ground right below the replacement type filtering and ventilating unit device and can be used for sealing mechanical or electric dumping.
The replacement type filtering and ventilating unit 16 does not need to design a large number of air supply and exhaust pipelines which vertically and horizontally span a factory building in a workshop ventilating system scheme to connect an air outlet, a dust removing and ventilating unit and an air supply barrel, and the distribution of air flow organization can be realized only by installing the replacement type filtering and ventilating unit 16 at a locally required position.
The number of cartridges 3 of the present invention may be odd or even and may be arranged vertically, obliquely or laterally.
The above embodiments are only for illustrating the inventive concept of the present invention and not for limiting the protection of the claims of the present invention, and all the insubstantial modifications of the present invention using the concept shall fall within the protection scope of the present invention.
Claims (5)
1. The replacement type recirculating ventilating cluster system is characterized in that a plurality of replacement type filtering ventilating units (16) which are connected in series or in parallel or independent of each other are arranged in a factory building, and the replacement type filtering ventilating units (16) adopt a ventilating and dedusting mode of upper air inlet and lower air outlet;
the fresh air exchange device (15) is arranged at the top of the factory building;
the replacement type filtering and ventilating unit (16) comprises a shell (1), wherein the shell (1) comprises a pollutant gas channel, a filter cylinder (3) and a clean gas channel, an air inlet (2) is formed in the upper part of the shell (1), and an air supply outlet (9) is formed in the lower part of the shell; the filter cylinder (3) is arranged on the inner side of the air inlet (2), the outlet of the filter cylinder (3) is connected to a clean gas channel, and the tail end of the clean gas channel is connected to the air inlet (9);
a back-blowing system and a fan (8) are arranged in the clean gas channel;
a converging injection pipe (4) is arranged between the filter cylinder (3) and the clean gas channel, the back blowing system comprises a back blowing air bag (5) and a back blowing pipe (6), the back blowing pipe (6) is provided with an injection port (11), and the injection port (11) is positioned below the converging injection pipe (4);
the clean gas channel is internally provided with a pollutant flow channel module, and the pollutant flow channel module consists of a pollutant flow channel module structure body (14) and an outer box plate (13);
the pollutant flow channel module structure body (14) comprises a saddle-shaped top plate (141) and side plates (142) which are connected with each other, the side edges of the side plates (142) are obliquely arranged and connected with an ash guide plate (143), and the bottoms of the side plates (142) and the ash guide plate (143) are connected with an ash receiving groove (144); the back-blowing air bag (5) is fixed in the sharp corner of the saddle-shaped top plate (141), the back-blowing pipe (6) is connected below the back-blowing air bag (5), and the surface cooler (7) and the fan (8) are fixed between the side plates (142).
2. A replacement recirculation ventilation cluster system according to claim 1, characterized in that the fan (8) is a variable frequency fan.
3. A replacement recirculation ventilation cluster system according to claim 1, characterized in that the filter cartridge (3) is open downwards.
4. A replacement recirculation ventilation cluster system according to claim 1, characterized in that the surface cooler (7) is mounted above the fan (8).
5. The replacement recirculation ventilation cluster system of claim 1, wherein the cluster system is disposed in a tall space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711131352.0A CN109780644B (en) | 2017-11-15 | 2017-11-15 | Replacement type recirculating ventilation cluster system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711131352.0A CN109780644B (en) | 2017-11-15 | 2017-11-15 | Replacement type recirculating ventilation cluster system |
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| CN109780644A CN109780644A (en) | 2019-05-21 |
| CN109780644B true CN109780644B (en) | 2023-06-13 |
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| CN201711131352.0A Active CN109780644B (en) | 2017-11-15 | 2017-11-15 | Replacement type recirculating ventilation cluster system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10277339A (en) * | 1997-02-07 | 1998-10-20 | Fuji Electric Co Ltd | Fan filter unit for clean room |
| WO2012093938A1 (en) * | 2011-01-03 | 2012-07-12 | Autarkis B.V. | Displacement ventilation system |
| CN104785024A (en) * | 2015-04-01 | 2015-07-22 | 成都易态科技有限公司 | Gas filtering device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619881B (en) * | 2009-06-16 | 2011-10-05 | 凯天环保科技股份有限公司 | Dedusting system of whole factory building |
| CN204522576U (en) * | 2015-01-15 | 2015-08-05 | 凯天环保科技股份有限公司 | The dust entirety served back under a kind of administers all-in-one |
| CN105509265A (en) * | 2016-01-25 | 2016-04-20 | 福建海晟环境科技有限公司 | Intelligent ventilation, dust removal and purification system |
| CN107137987A (en) * | 2017-06-26 | 2017-09-08 | 山东国舜建设集团有限公司 | Air purification all-in-one machine |
-
2017
- 2017-11-15 CN CN201711131352.0A patent/CN109780644B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10277339A (en) * | 1997-02-07 | 1998-10-20 | Fuji Electric Co Ltd | Fan filter unit for clean room |
| WO2012093938A1 (en) * | 2011-01-03 | 2012-07-12 | Autarkis B.V. | Displacement ventilation system |
| CN104785024A (en) * | 2015-04-01 | 2015-07-22 | 成都易态科技有限公司 | Gas filtering device |
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Inventor after: Zheng Xiang Inventor after: Li Jian Inventor after: Yao Weiqiang Inventor after: Lin Hongzhu Inventor after: Sheng Yuangun Inventor before: Li Jian Inventor before: Yao Weiqiang Inventor before: Lin Hongzhu Inventor before: Sheng Yuangun Inventor before: Zheng Xiang |
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Effective date of registration: 20191127 Address after: 116600, Jinzhou New District, Liaoning, Dalian double D digital 3 Road No. 8 Applicant after: MEGAUNITY ENVIRONMENTAL SOLUTIONS CO.,LTD. Applicant after: Beijing Air Research heating and cooling equipment installation engineering technology Co.,Ltd. Address before: 116600, Jinzhou New District, Liaoning, Dalian double D digital 3 Road No. 8 Applicant before: MEGAUNITY ENVIRONMENTAL SOLUTIONS CO.,LTD. |
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Address after: Floor 4, No. 300, Dongxin Road, Xukou Town, Wuzhong District, Suzhou City, Jiangsu Province, 215156 Patentee after: Suzhou Zhaohe Air System Co.,Ltd. Patentee after: Beijing Air Research heating and cooling equipment installation engineering technology Co.,Ltd. Address before: 116600 No.8, digital3 Road, shuangd port, Jinzhou new district, Dalian City, Liaoning Province Patentee before: MEGAUNITY ENVIRONMENTAL SOLUTIONS CO.,LTD. Patentee before: Beijing Air Research heating and cooling equipment installation engineering technology Co.,Ltd. |