CN111912042A - Circulating air utilization system and method - Google Patents
Circulating air utilization system and method Download PDFInfo
- Publication number
- CN111912042A CN111912042A CN202010576755.1A CN202010576755A CN111912042A CN 111912042 A CN111912042 A CN 111912042A CN 202010576755 A CN202010576755 A CN 202010576755A CN 111912042 A CN111912042 A CN 111912042A
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- Prior art keywords
- circulating air
- main chamber
- circulating
- water curtain
- air
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
- B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
- B05B14/462—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material and separating the excess material from the washing liquid, e.g. for recovery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/60—Ventilation arrangements specially adapted therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Humidification (AREA)
Abstract
The invention provides a circulating air utilization system and a method, wherein the circulating air utilization system comprises a main chamber for circulating air to form directional flow, a filtering part for retreating the circulating air entering the main chamber, a cooling device arranged in the main chamber and a humidifying device arranged in the main chamber; the main chamber is provided with a circulating air inlet and a circulating air outlet, at least one channel is formed between the circulating air inlet and the circulating air outlet in the main chamber, and the filtering part is provided with a filtering layer which covers the channel and is used for removing paint mist; the cooling device is configured to enable circulating air to pass through the surface of the cooling device and perform contact heat exchange; the humidifying device provides an atomized water curtain formed by spraying, a water filtering layer is arranged at a circulating air outlet in the main chamber, and circulating air flowing in a directional mode passes through the atomized water curtain and is sent back to the dry-type spraying room from the circulating air outlet through the water filtering layer to be utilized. The invention utilizes the atomization water curtain to adjust the temperature and the humidity of the circulating air and has the advantages of simple structure and low energy consumption.
Description
Technical Field
The invention belongs to the technical field of automobile coating, and particularly relates to a circulating air utilization system and a circulating air utilization method for adjusting temperature and humidity by utilizing an atomized water curtain.
Background
The dry paint spray booth used in the automobile painting workshop can be divided into a traditional filter cotton dry paint spray booth, a lime powder dry paint spray booth and a novel dry carton type paint spray booth. In the current automobile coating industry, a lime powder dry paint spraying chamber is mostly adopted to filter oversprayed paint particles in the coating process.
Meanwhile, fresh air with certain temperature and humidity is required to be fed into a paint spraying chamber of a coating workshop in time, at present, circulating air is mostly used for replacing (or partially replacing) the fresh air, the temperature and humidity of the circulating air are relatively close to the required air supply temperature and humidity, and energy consumption required by adjustment can be greatly reduced, so that the circulating air technology is widely applied to a coating and paint spraying process.
In the prior art, a surface cooling dehumidification and heating process section is designed in the circulating air utilization process, and dehumidification and heating treatment are respectively carried out on circulating air, so that the main existing difficult problems are as follows:
1. the investment is large, the circulating air utilization structure occupies a large area, and a refrigerator system and a hot water/gas heating system are matched;
2. the refrigerant dehumidification and heating medium heating process has high energy consumption and high cost;
3. a plurality of (some even more than four) filtering channels are required to be arranged, so that the filter cotton replacement cost is high;
4. the equipment is complicated, spare parts and maintenance are inconvenient, and the maintenance cost is high.
Based on the characteristics that the circulating air output by the dry-type spraying room has high temperature and low humidity, the circulating air utilization system and the circulating air utilization method for adjusting the temperature and the humidity by utilizing the atomized water curtain are provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a circulating air utilization system and a circulating air utilization method for adjusting temperature and humidity by utilizing an atomized water curtain, and the circulating air utilization system and the circulating air utilization method have the advantages of simple structure and low energy consumption.
In order to achieve the above object, in one aspect, the present invention provides a circulating air utilization system for processing and utilizing circulating air obtained after filtering paint mist in a dry spray booth, wherein the paint mist is generated in one or more paint booths, the paint mist is adsorbed by an air flow and is delivered to the one or more dry spray booths, the circulating air utilization system comprising:
a main chamber for forming directional flow by circulating air;
a filter part for retreating the circulating air entering the main chamber;
a cooling device disposed in the main chamber; and
a humidifying device disposed in the main chamber;
the main chamber is provided with a circulating air inlet and a circulating air outlet, at least one channel is formed between the circulating air inlet and the circulating air outlet in the main chamber, and the filtering part is provided with a filtering layer which covers the channel and is used for removing paint mist;
the cooling device is configured to enable circulating air to pass through the surface of the cooling device and perform contact heat exchange;
wherein, the humidifying device provides an atomized water curtain formed by spraying, a water filtering layer is arranged at a circulating air outlet in the main chamber, and circulating air flowing directionally passes through the atomized water curtain and is sent back to the dry-type spraying room from the circulating air outlet through the water filtering layer for utilization.
According to another embodiment of the present invention, the humidifying device provides a plurality of atomizing nozzles, which are arranged in a stepwise inclined downward arrangement from top to bottom in the flowing direction of the circulating air to make the most direct contact with the circulating air at each position interval to maintain the uniformity of the humidity of the flowing circulating air.
According to another embodiment of the present invention, the humidifying device is disposed downstream of the cooling device, and the plurality of atomizing nozzles have a spraying component facing in an upstream direction, where the spraying component facing in the upstream direction is understood to be spraying in an inclined manner toward the cooling device to form an atomized water curtain of a larger area range.
Further, an accommodation space may be provided in the main chamber, and the accommodation space is always filled with the atomized water mist.
According to another embodiment of the invention, the humidifying device sprays the atomized water curtain formed on the flow path of the circulating air to at least partially cover the cooling device.
According to another embodiment of the present invention, the cooling device is provided with a refrigerating unit, a water circulation pipe, and a heat exchanger, the refrigerating unit is disposed outside the main chamber, the heat exchanger is connected to the refrigerating unit through the water circulation pipe, and the heat exchanger is disposed in the tunnel and is in contact with the circulating air in the tunnel to exchange heat.
According to another embodiment of the present invention, the dry-type spraying device further comprises a distributor for controlling the flow of the circulating air introduced into the main chamber, wherein the distributor is provided with a plurality of air supply pipes capable of being opened and closed, one end of each air supply pipe is connected with the circulating air inlet, and the other end of each air supply pipe is connected with the same or different dry-type spraying rooms, so as to maintain the stability of the flow rate of the circulating air flowing from the circulating air inlet.
According to another embodiment of the invention, a drain channel is provided in the main chamber below the humidifying device to collect the water droplets formed by the natural collection of the atomized water curtain.
Preferably, the water collected in the drainage tank is filtered and recycled again.
In another aspect, the present invention provides a method of utilizing circulating air, in which overspray generated in one or more coating booths is adsorbed by an air flow and transferred to one or more dry spray booths, and the overspray is filtered in the dry spray booths to obtain circulating air, the method comprising: the circulating air is humidified by arranging an atomized water curtain formed by spraying on a flowing path of the circulating air, a water filtering layer capable of absorbing atomized water molecules is arranged on one side of the downstream of the atomized water curtain on the flowing path of the circulating air, and the flowing circulating air flows through the atomized water curtain, passes through the water filtering layer and is sent back to the dry spraying room for utilization.
According to another embodiment of the invention, the circulating air is controlled to have a stable flow rate, and the spraying water is controlled to have a constant flow rate, wherein the temperature of the spraying water is lower than that of the circulating air, and the flowing circulating air is simultaneously cooled and humidified during flowing through the atomized water curtain.
According to another embodiment of the invention, a cooling device for heat exchange is arranged on the flow path of the circulating air at the upstream side of the atomized water curtain, and the atomized water curtain formed by spraying at least partially covers the cooling device.
The invention has the following beneficial effects:
the circulating air utilization system of the invention carries out the operations of filtering, cooling, humidifying and preventing water mist on the circulating air in the main chamber, provides air which is in accordance with the temperature and the humidity for the dry-type spray room, greatly reduces the energy consumption for adjusting the external natural air to be in accordance with the temperature and the humidity, does not need to be matched with a hot water/fuel gas heating system used in the prior art, and has the advantages of small energy consumption and low cost.
In addition, the atomizing water curtain is arranged from top to bottom in a step-shaped inclined downward mode, so that the main chamber space can be utilized more fully, atomizing water mist with higher utilization rate is provided in a smaller space, and the circulating air and the atomizing water curtain have more uniform and sufficient contact environment.
In addition, the circulating air utilization system is compact in overall structure, small in occupied area and convenient to operate and maintain.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic block diagram of a circulating wind utilization system according to the present invention.
Detailed Description
Example 1
In the circulating air utilization system of the present example, overspray generated in one or more coating rooms is adsorbed by an air flow and is delivered to one or more dry spray rooms 10, and the overspray is filtered in the dry spray rooms 10 to obtain circulating air, and as shown in fig. 1, the circulating air utilization system includes a main chamber 20, a filter portion 30, a temperature reduction device 40, a humidification device 50, and a water filtration layer 60.
The main chamber 20 has a circulating air inlet 21 on the left side and a circulating air outlet 22 on the right side, at least one channel 20a is formed between the circulating air inlet 21 and the circulating air outlet 22 in the main chamber 20, and a circulating fan 23 is connected to the outside of the circulating air outlet 22 to drive the circulating air to flow in the channel 20a in a directional manner.
The filter unit 30 is for reprocessing the circulating air introduced into the main chamber 20, and includes at least a filter layer 31 (e.g., a middle effect filter) covering the inside of the passage 20a, and the circulating air passes through the filter layer 31 to filter impurities contained therein, such as paint mist.
The cooling device 40 is disposed in the main chamber 20 and located downstream of the filter layer 31, the cooling device 40 is used for circulating air to pass through the surface thereof and perform contact heat exchange, and includes a refrigerating unit, a water circulating pipe 41 and a cold water coil 42, the cold water coil (heat exchanger) 42 is disposed in the passage 20a, the refrigerating unit is disposed outside the main chamber 20, the cold water coil 42 is connected to the refrigerating unit through the water circulating pipe 41, and the circulating air flowing through the passage 20a passes through the surface of the cold water coil 42 to perform contact heat exchange.
Specifically, the humidifying device 50 includes a water atomization pipe 51, and a plurality of atomization nozzles 52 disposed at the end of the water atomization pipe 51, and the plurality of atomization nozzles 52 are arranged in a step-like inclined downward from top to bottom in the flowing direction of the circulating air, as shown in fig. 1, so as to make the most direct contact with the circulating air at each position interval to maintain the uniformity of the humidity of the flowing circulating air.
Further, the plurality of atomizing nozzles 52 have a spray component directed in an upstream direction (i.e., the left direction in fig. 1 is the upstream direction), for example, the atomizing nozzles 52 spray at an inclination of 30 ° toward the lower left, and the spray forms an atomized water curtain at least partially covering the cold water coil 42 to form an atomized water curtain with a larger area range in the main chamber 20, so that the humidification is more sufficient.
In the main chamber 20 of the present example, a drain 24 is provided below the humidifying device 50 to collect water droplets formed by the natural collection of the atomized water curtain.
The water collected in the drain tank 24 can be recycled after being filtered.
A water-filtering layer 60 is disposed in main chamber 20 near circulating air outlet 22 for isolating mist to be fed into dry spray booth 10, wherein water-filtering layer 60 may be a water-filtering filter.
In order to coordinately control the flow of the circulating air flowing into the main chamber 20 to perform a more obvious cooling and humidifying operation, a distributor 70 for controlling the flow of the circulating air input into the main chamber 20 is provided in front of the main chamber 20, the distributor 70 is provided with a plurality of air supply pipes 71 capable of being opened and closed, one ends of the plurality of air supply pipes 71 are connected to the circulating air inlet 21, and the other ends of the plurality of air supply pipes 71 are connected to the same or different dry type spraying rooms 10 to maintain the stability of the flow rate of the circulating air flowing from the circulating air inlet 21.
It is understood that the filter portion 30 in the present embodiment is located between the circulating air inlet 21 and the circulating air outlet 22, and the filter portion 30 may be provided with a plurality of filter layers 31, and the plurality of filter layers 31 respectively correspond to different channels 20a, that is, a filter layer 31 is provided in each channel 20a (as in the case of providing one filter layer 31 for a single channel 20a shown in fig. 1), or a plurality of filter layers 31 correspond to the same channel 20a, that is, a plurality of filter layers 31 are provided in the same channel 20a, so as to filter impurities, such as paint mist, contained in the circulating air flowing therethrough.
The circulating air flowing in the direction of the present example flows in from the circulating air inlet 21, is filtered by the filtering layer 31, then contacts with the cold water coil 42 to reduce the temperature, passes through the atomized water curtain to increase the humidity, passes through the filtering water layer 60 to be isolated by the water mist, and then is sent back to the dry-type spraying room 10 from the circulating air outlet 22 for use.
Example 2
The present example provides a method for utilizing circulating wind, which is implemented by the circulating wind utilization system in embodiment 1, and the method for utilizing circulating wind includes: an atomized water curtain formed by spraying is arranged on a flow path of the circulating air to humidify the circulating air, a water filtering layer 60 capable of absorbing atomized water molecules is arranged on one side of the downstream of the atomized water curtain on the flow path of the circulating air, and the flowing circulating air passes through the atomized water curtain, passes through the water filtering layer 60, is sent back to the dry-type spraying room 10 and is utilized.
The circulating air of the example has stable flow, the spraying water has constant flow speed, the temperature of the spraying water is preferably lower than that of the circulating air, and the flowing circulating air is simultaneously cooled and humidified during flowing through the atomization water curtain.
A cooling device 40 for heat exchange is arranged on one side of the flow path of the circulating air, which is positioned at the upstream side of the atomized water curtain, the atomized water curtain formed by spraying at least partially covers the cooling device 40, and the cooling and humidifying processes of the circulating air are synchronously performed through double cooling of the atomized water curtain formed by a cold water coil 41 in the cooling device 40 and spraying water with lower temperature.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that variations may be made without departing from the scope of the invention, and equivalents may be resorted to without departing from the scope of the invention.
Claims (10)
1. A circulating air utilization system for processing and utilizing circulating air obtained after filtering paint mist in a dry spray booth (10), wherein the paint mist is generated in one or more paint booths, and the paint mist is adsorbed by an air flow and is delivered to the one or more dry spray booths (10), the circulating air utilization system comprising:
a main chamber (20) for forming a directional flow by the circulating air;
a filter unit (30) for reprocessing the circulating air introduced into the main chamber (20);
a temperature reducing device (40) disposed within the main chamber (20); and
a humidifying device (50) disposed within the main chamber (20);
wherein the main chamber (20) is provided with a circulating air inlet (21) and a circulating air outlet (22), at least one channel (20a) is formed between the circulating air inlet (21) and the circulating air outlet (22) in the main chamber (20), and the filter part (30) is provided with a filter layer (31) which covers the channel (20a) and performs paint mist removing treatment;
wherein the cooling device (40) is configured to enable circulating air to pass through the surface of the cooling device and perform contact heat exchange;
wherein the humidifying device (50) provides an atomized water curtain formed by spraying, a water filtering layer (60) is arranged in the main chamber (20) and positioned at the circulating air outlet (22), and circulating air flowing directionally passes through the atomized water curtain and is sent back to the dry-type spraying room (10) from the circulating air outlet (22) through the water filtering layer (60) for utilization.
2. The circulated air utilization system according to claim 1, wherein the humidifying device (50) provides a plurality of atomizing nozzles (52), and the plurality of atomizing nozzles (52) are arranged in a stepwise inclined downward arrangement from top to bottom in the flowing direction of the circulated air.
3. The circulated air utilization system according to claim 2, wherein the humidifying means (50) is disposed downstream of the temperature reducing means (40), and the plurality of atomizing nozzles (52) have a spray component directed in an upstream direction.
4. The circulated air utilization system according to claim 3, wherein the humidifying device (50) sprays the atomized water curtain formed on the flow path of the circulated air to at least partially cover the temperature reducing device (40).
5. The circulated air utilization system according to claim 1, wherein the temperature reducing means (40) is provided with a freezer unit disposed outside the main chamber (20), a water circulation pipe (41), and a heat exchanger (42) connected to the freezer unit through the water circulation pipe (41), the heat exchanger being disposed in the tunnel (20a) and being in contact with the circulated air in the tunnel (20a) for heat exchange.
6. The circulated air utilization system according to claim 1, further comprising a distributor (70) for controlling the flow of the circulated air introduced into the main chamber (20), wherein the distributor (70) is provided with a plurality of open/close blowing ducts (71), one ends of the plurality of blowing ducts (71) are connected to the circulated air inlet (21), and the other ends of the plurality of blowing ducts (71) are connected to the same or different dry spray booths (10).
7. The circulated air utilization system according to claim 1, wherein a drain groove (24) is provided in the main chamber (20) below the humidifying device (50).
8. A circulating air utilizing method for processing and utilizing circulating air obtained after filtering paint mist in a dry spray booth (10), wherein the paint mist is generated in one or more paint rooms, and the paint mist is adsorbed by an air flow and is delivered to one or more dry spray booths (10), the circulating air utilizing method comprising: an atomization water curtain formed by spraying is arranged on a flow path of the circulating air to humidify the circulating air, a water filtering layer (60) capable of absorbing atomized water molecules is arranged on one side of the downstream of the atomization water curtain on the flow path of the circulating air, and the flowing circulating air flows through the atomization water curtain, passes through the water filtering layer (60) and is sent back to the dry-type spraying room (10) for utilization.
9. The circulated air utilization method according to claim 8,
controlling the circulating air to have stable flow;
controlling the spraying water to have constant flow rate;
wherein, the temperature of the spraying water is lower than that of the circulating air, and the flowing circulating air is simultaneously cooled and humidified in the process of flowing through the atomization water curtain.
10. A method for utilizing circulating wind according to claim 9, wherein a temperature reducing means (40) for heat exchange is provided on the upstream side of the atomized water curtain in the flow path of the circulating wind, and the atomized water curtain formed by spraying at least partially covers the temperature reducing means (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010576755.1A CN111912042A (en) | 2020-06-22 | 2020-06-22 | Circulating air utilization system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010576755.1A CN111912042A (en) | 2020-06-22 | 2020-06-22 | Circulating air utilization system and method |
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| Publication Number | Publication Date |
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| CN111912042A true CN111912042A (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010576755.1A Pending CN111912042A (en) | 2020-06-22 | 2020-06-22 | Circulating air utilization system and method |
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| CN (1) | CN111912042A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112871494A (en) * | 2021-01-19 | 2021-06-01 | 郭振宇 | Environment-friendly paint spraying apparatus is used in automobile parts processing |
| CN115061377A (en) * | 2022-08-18 | 2022-09-16 | 北京大熊座科技有限公司 | Dry-type spray room maintenance method and device based on filter data model |
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| CN200972228Y (en) * | 2006-11-01 | 2007-11-07 | 常州市惠普机械有限公司 | Circulation air supply air conditioner special for coating spray room |
| CN203615509U (en) * | 2013-12-06 | 2014-05-28 | 广东申菱空调设备有限公司 | Machine room air conditioning system with direct air ventilation |
| CN104390274A (en) * | 2014-12-17 | 2015-03-04 | 山东格瑞德集团有限公司 | Ventilation and air conditioning system for base station room |
| CN206739471U (en) * | 2017-05-16 | 2017-12-12 | 机械工业第六设计研究院有限公司 | Logistics shelf magazine air-conditioning system |
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2020
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200972228Y (en) * | 2006-11-01 | 2007-11-07 | 常州市惠普机械有限公司 | Circulation air supply air conditioner special for coating spray room |
| CN203615509U (en) * | 2013-12-06 | 2014-05-28 | 广东申菱空调设备有限公司 | Machine room air conditioning system with direct air ventilation |
| CN104390274A (en) * | 2014-12-17 | 2015-03-04 | 山东格瑞德集团有限公司 | Ventilation and air conditioning system for base station room |
| CN206739471U (en) * | 2017-05-16 | 2017-12-12 | 机械工业第六设计研究院有限公司 | Logistics shelf magazine air-conditioning system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112871494A (en) * | 2021-01-19 | 2021-06-01 | 郭振宇 | Environment-friendly paint spraying apparatus is used in automobile parts processing |
| CN112871494B (en) * | 2021-01-19 | 2022-06-28 | 江苏朗越环保科技有限公司 | Environment-friendly paint spraying apparatus is used in automobile parts processing |
| CN115061377A (en) * | 2022-08-18 | 2022-09-16 | 北京大熊座科技有限公司 | Dry-type spray room maintenance method and device based on filter data model |
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| CB02 | Change of applicant information |
Address after: 430056 No. 10 Dongfeng Avenue, Wuhan economic and Technological Development Zone, Wuhan, Hubei Applicant after: DONGFENG MOTER Co.,Ltd. Address before: 510000 Fengshen Avenue, Huadu District, Guangzhou, Guangdong Province, No. 8 Applicant before: DONGFENG MOTER Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201110 |