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WO2014010838A1 - Installation de ventilation préfabriquée - Google Patents

Installation de ventilation préfabriquée Download PDF

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Publication number
WO2014010838A1
WO2014010838A1 PCT/KR2013/005377 KR2013005377W WO2014010838A1 WO 2014010838 A1 WO2014010838 A1 WO 2014010838A1 KR 2013005377 W KR2013005377 W KR 2013005377W WO 2014010838 A1 WO2014010838 A1 WO 2014010838A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide
housing
cover
guide body
height variable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2013/005377
Other languages
English (en)
Korean (ko)
Inventor
이성국
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR2020130002960U external-priority patent/KR200468308Y1/ko
Application filed by Individual filed Critical Individual
Publication of WO2014010838A1 publication Critical patent/WO2014010838A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F24F7/007—Ventilation with forced flow
    • F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
    • 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
    • F24F13/20—Casings or covers

Definitions

  • the present invention relates to a prefabricated ventilator, and more specifically, it is possible to install and use without the installation expert, as the consumer can be easily assembled and installed by assembling, and to the opening and closing of the window by installing on the window frame provided with the window It does not interfere at all, and it is possible to omit the operation of a separate hole for installing a fan, and to adjust the height of the window frame by the height adjuster, and according to the consumer's choice, one or more Ventilation fan can be installed to obtain selectivity and convenience, and the intake volume control body can adjust the amount of air inhaled and discharged by the fan appropriately.
  • a prefabricated ventilator is provided.
  • a fan used to discharge indoor air to the outside is composed of an electric motor having a rotating shaft, a fan fan rotated to be engaged with the rotating shaft of the electric motor, and a protective housing and cover surrounding the electric motor and the fan. .
  • Ventilators composed of such a configuration are usually installed in the bathroom or basement of a building to exhaust the smell and moisture of the inside to the outside, and in recent years, in the summer, the indoor air or the indoor air and It may be installed in the living room, office or room to emit a pleasant smell.
  • the ventilator is installed in a smoking room, for example, in order to easily exhaust the tobacco smoke generated when smoking a cigarette in a closed space such as a smoking room.
  • a fan in order to install the fan, a fan must be installed by essentially drilling a hole in the wall or window of the space where the fan is installed so that indoor air and smells are exhausted to the outside by the rotation operation of the fan.
  • a window in the case of a window, a window can be opened to open a part of the window frame, and then a fan is installed in the space between the open window and the window frame, but in this case, the work that needs to close the remaining space without the fan is necessary. Therefore, there is an inconvenience that additional work must be performed.
  • the ventilator is installed on the window frame of the window, the remaining space is blocked with styrofoam or sheet, so in the winter, outside cold air enters between the styrofoam or the sheet and enters the room, causing heat loss in the room.
  • the temperature of the room is greatly increased because the open space of the window is reduced.
  • a ventilation device for fixing a window frame which is a registration room for 20-0458368, has been conceived, which is installed in the window frame and has a vent formed therein and a coupling groove communicating with the vent formed on one side thereof;
  • An opening / closing door rotatably installed at the front side of the main body, a rear plate installed at the rear side of the main body and having a plurality of slits therethrough, and a filter member inserted into the coupling groove so as to be located in the vent hole; Fitted on the vent so as to be located on the front side of the main body, it is provided with a fan that is installed inside the rotatable fan, and a controller installed on the main body to control the operation of the fan.
  • This conventional technology can be installed simply by inserting it into a window frame like a window, so it can be installed without additional construction or expert assistance, and the window can be easily opened by filtering the air contaminated by yellow dust or air pollution through a filter. Even in urban areas, indoor ventilation can be easily performed, and a rotatable door is installed at the front and a rear plate is installed at the rear to completely block external noise when the ventilation fan is not operated.
  • the place where the fan is installed varies depending on, for example, the toilet, the kitchen, the study room, or the home room, and the height of the window frame installed in such a place is also different. It is inconvenient to first select whether the height of the space and the height of the fan is correct.
  • the length adjusting means in the prior art has a length so as to secure the extension and the protrusion with a bolt in a state extending from the protrusion extending from the main body.
  • one of the workers holding a heavy ventilator first to extend the extension from the protrusion and then the other side has a problem that the installation work is not possible with one worker.
  • the conventional ventilation devices are open to the ventilator in a hollow state for the discharge of the ventilator, so that the indoor environment is exposed to the outside through the open body to protect the privacy of the inhabitants. There is no choice but to be exposed to crime prevention such as hidden cameras.
  • the present invention can provide the feeling and satisfaction of DIY (do-it-yourself) to install yourself by configuring the ventilation device as a prefabricated, and can change the installation height according to the height of the window frame to be installed In addition, it can be installed and used without an installation expert, and one or more fans can be installed according to the consumer's choice, so that selectivity and convenience can be obtained, and the amount of air sucked out by the fan by the suction regulator can be appropriately adjusted.
  • the purpose of the present invention is to provide a prefabricated ventilation device that can prevent indoor crimes and prevent crimes such as hidden cameras by preventing the indoor environment from being exposed to the outside by the barrier film.
  • the prefabricated ventilator of the present invention as a means for achieving the above object is provided with a first coupling portion to which the first ventilator is coupled to the inner center and a first support portion for supporting the first coupling portion, and each of the lower ends is drawn inwardly.
  • a first housing provided with a first assembly groove having a first fixed jaw and provided with first elastic fastening pieces along a front edge thereof;
  • the first fastening jaw to which the first elastic fastening piece provided along the front edge of the first housing body is fastened is provided at a position corresponding to the first elastic fastening piece, and a first guide part having a hollow inside is projected on the rear surface thereof.
  • a first cover having a first lead-out hole and a first finger retraction prevention portion communicating with the hollow inside of the first guide portion on a front surface thereof, and having a locking portion hooked to the first fixing jaw of the first assembly groove portion;
  • a first guide body drawn from the rear surface of the first housing body to the inside of the first housing body and penetrated through the hollow interior of the first guide portion of the first cover and drawn out to the extraction hole;
  • the first fitting part fitted to the first guide body is provided on the rear surface, and the first guide body is moved away from the front surface of the first housing body by moving forward or backward from the hollow interior of the first guide part, and
  • a first inhalation regulator provided with a first blocking membrane;
  • Height-variable bodies each having second assembly groove portions corresponding to the first assembly groove portions of the first housing body on both sides, a reinforcing surface protrudes on the inner side thereof, and a receiving piece on the lower inner side thereof;
  • a fixed body including a first connecting portion introduced into the first assembly groove of the first housing
  • the first guide body may include a first locking flange that is hooked to the first guide part of the first cover; A first guide body extending from the first catching flange; A first elastic portion extending from the first guide body and having a first cutout portion formed at an end thereof, the first elastic coupling piece being positioned to correspond to both sides of the first cutout portion, and inside the first fitting portion of the first suction regulator
  • the first elastic projection is provided with a first engaging projection is provided.
  • the interior of the height variable body is formed with a positioning groove which is located on the reinforcement surface of the height variable body and is further provided with a closing plate seated and supported on the top of the receiving piece of the height variable body.
  • a second assembly groove portion corresponding to any one of the first assembly groove portion of the first housing or the second assembly groove portion of the height variable body is provided on both sides of the upper end and the second vent is coupled to the inner center.
  • a second guide body which is drawn from the rear surface of the second housing body into the second housing body and penetrates through the hollow interior of the second guide portion of the second cover and is led out to the second drawing hole;
  • the second fitting part fitted to the second guide body is provided on the rear surface and is pulled out or near from the front surface of the second housing body by being drawn in or drawn out from the second drawing hole of the second guide body.
  • the second suction amount regulator is provided is further provided.
  • the present design is a DIY (do-it-yourself) feeling that consumers can install themselves by constructing a prefabricated housing, a guide, a cover, a suction amount adjuster, a height variable, and a fixed body. And satisfaction, and the first housing to which the first ventilator is coupled can be installed regardless of the height of the window frame by using a variable height, and the first housing and the second housing together as needed.
  • the height variable body can be utilized as a shelf by the finishing plate provided inside the height variable body, and the indoor environment is exposed to the outside by the blocking film.
  • FIG. 1 is a perspective view showing a prefabricated ventilation device of the present invention.
  • Figure 2 is a perspective view showing a rear portion of the prefabricated ventilation device of the present invention.
  • Figure 3 is an exploded perspective view showing the configuration of the prefabricated ventilation device of the present invention.
  • Figure 4 is an exploded perspective view showing the assembled state of the present invention prefabricated ventilation device.
  • Figure 5 is a block diagram showing the configuration of the prefabricated ventilation device of the present invention.
  • Figure 6 is a block diagram showing the operation state of the suction amount regulator of the prefabricated ventilation device of the present invention.
  • FIG. 7 is a partially omitted configuration diagram showing a coupling component of the housing body and the cover of the assembled ventilation device of the present invention.
  • FIG. 8 is a perspective view showing another embodiment of the prefabricated ventilation device of the present invention.
  • Figure 9 is an exploded perspective view showing another embodiment of the prefabricated ventilation device of the present invention.
  • Figure 10 is an exploded perspective view showing another embodiment of the prefabricated ventilation device of the present invention.
  • the prefabricated ventilation device of the present invention As shown, the prefabricated ventilation device of the present invention, the first housing 110, the first cover 120, the first guide body 130, the first suction amount control body 140, the height variable body 150 It is made of a fixed body (160).
  • first housing body 110, the first cover 120, the first guide body 130, the first suction amount control body 140, the height variable body 150, the fixed body 160 are all injection It can be injection molded by molding, and the material is made of synthetic resin to lighten the load so that there is no problem for consumers to assemble directly.
  • the first housing 110 is provided with a first coupling part 112 to which the first ventilator 111 is coupled to an inner center thereof, and a first support part 113 to support the first coupling part 112.
  • a first assembly groove 115 having a first fixing jaw 114 drawn inwardly on both sides of the lower end is provided, and first elastic fastening pieces 116 are provided along the front edge.
  • the coupling of the first ventilator 111 and the first coupling part 112 inserts a motor of the first ventilator 111 into the inner side of the first coupling part 112 and then uses a bolt or the like to connect the first coupling part.
  • the motor 112 and the motor of the first ventilator 111 By firmly fixing the motor 112 and the motor of the first ventilator 111, the first ventilator 111 is firmly fixed by the first coupling part 112.
  • the first support part 113 supports the first coupling part 112, and both sides thereof are connected to the first housing body 110 and the first coupling part 112, respectively, as shown in FIG. 2.
  • the first coupling part 112 firmly supports the load transmitted from the first ventilator 111 by the first support part 113.
  • the first elastic fastening piece 116 has its own elasticity as both sides of the first elastic fastening piece 116 are respectively cut out.
  • the first cover 120, the first fastening jaw 121 to which the first elastic fastening piece 116 is provided along the front edge of the first housing body 110 is fastened to the first elastic fastening piece
  • first finger retraction prevention portions 124 are provided, respectively, and a locking portion 125 is formed on the first fixing jaw 114 of the first assembling groove 115.
  • the first cover 120 and the first housing body 110 is coupled to the first elastic fastening piece 116 provided on the first housing body 110 is provided with the first cover 120 is a first fastening
  • the first cover 120 is firmly coupled to the first housing body 110 by being caught by the jaw 121.
  • the first elastic fastening piece 116 can be easily coupled to the first fastening jaw 121 by the elasticity of the first elastic fastening piece 116.
  • the first finger retraction prevention unit 124 is a first housing 110 by the first finger retraction prevention unit 124 in order to prevent a safety accident caused by children put their hands into the installed ventilation device. Because children are prevented from putting their hands inside, the child's safety accident can be prevented.
  • the first guide body 130 is inserted into the first housing body 110 from the rear surface of the first housing body 110 to hollow the first guide portion 122 of the first cover 120. It penetrates through the inside and is drawn out to the first drawing hole 123.
  • the first suction amount adjusting body 140, the first fitting portion 141 which is fitted to the first guide body 130 is provided on the rear surface and the first guide body 130 is the first guide
  • the first blocking layer 142 is provided away from or near to the front surface of the first housing body 110.
  • the first guide body 130 passes through the first drawing hole 123 of the first housing body 110 to the inside of the first fitting portion 141 of the first suction amount adjusting body 140. It is pulled in and fitted.
  • the first suction amount adjusting body 140 is movable to move away from or close to the first housing body 110, which is the first fitting portion 141 of the first suction amount adjusting body 140.
  • the first guide body 130 can be pulled in and out from the first drawing hole 123 of the first housing body 110 in a state where the end portion of the first guide body 130 is inserted into and fixed to the inner side thereof. This is because the first lead-out hole 123 is penetrated.
  • the first suction amount adjusting body 140 when the first suction amount adjusting body 140 is located away from the first housing body 110, since a large amount of space is formed between the first suction amount adjusting body 140 and the first housing body 110. Inhalation discharge of a relatively large amount of air becomes possible, and, on the contrary, when the first suction amount adjusting body 140 is located close to the first housing body 110, the first suction amount adjusting body 140 and the first housing body 110 are separated. Since less space is formed between the suction and discharge of relatively small air, the suction amount according to the suction discharge of the air suitable for the indoor environment can be adjusted.
  • the first blocking membrane 142 of the first intake regulator 140 is for preventing the naked eye from being visually identified from the outside.
  • the first blocking membrane 142 is made of an opaque material so that the indoor is not visible from the outside. This is preferred.
  • the first barrier layer 142 is made of an opaque material, the exposure of the indoor environment to the outside is prevented by the first barrier layer 142, thereby preventing the privacy of indoor residents and preventing crimes such as hidden cameras. Can be.
  • the height variable body 150, the second assembly groove 151 corresponding to the first assembly groove 115 of the first housing 110 are provided on both sides, respectively, and the reinforcing surface 152 on the inner surface Protruding and the receiving piece 153 is provided on the inner bottom.
  • the height variable 150 Space to install the prefabricated ventilation device of the present invention by using the height variable 150, for example, when the height of the window frame is greater than the height of the first housing 110, the height variable 150 By connecting to the lower portion of the first housing body 110 can be installed the ventilator of the present invention to fit the height of the window frame.
  • the fixing of the first housing 110 and the height variable body 150 is performed by the fixing body 160, and the fixing body 160 is the first of the first housing body 110.
  • the first connecting portion 161 introduced into the assembly groove 115 and the second connecting portion 162 introduced into the second assembly groove 151 of the height variable 150 is provided.
  • the first connecting portion 161 of the fixing body 160 is introduced into the first assembly groove 115 of the first housing 110, and the second connecting portion 162 of the fixing body 160 is The first housing 110 and the height variable body 150 are connected and fixed by the fixing body 160 by entering the second assembly groove 151 of the height variable body 150.
  • the number of the height variable body 150 may be provided in accordance with the height of the window frame, which is a space to be installed, in this case, also in this case, the height variable body 150 using the fixing body 160 as well. ) Can be connected to each other.
  • the second assembly groove part 151 of the height variable body 150 has a natural size that both the first connection part 161 and the second connection part 162 of the fixing body 160 are retractable.
  • the upper end of the second assembly groove 151 of the height variable body 150 is located on the upper side
  • the second assembly groove 151 of the height variable body 150 is inserted into the first connecting portion 161 of the fixing body 160 is located at the lower side of the second assembly of the height variable body 150 located at the upper side
  • the first guide body 130 may include a first catching flange 131 that is hooked to the first guide part 122 of the first cover 120, and a first extending flange that extends from the first catching flange 131.
  • a first elastic coupling extending from the guide body 132 and the first guide body 132 and having a first cutout 133 formed at an end thereof and corresponding to both sides of the first cutout 133, respectively. It consists of a piece 134, the first engaging portion 141 of the first suction amount adjusting body 140 is provided with a first locking projection 143, the first elastic coupling piece 134 is walked. .
  • the first guide body 132 of the first guide body 130 and the first elastic coupling piece 134 are first of the first cover 120 fitted to the front surface of the first housing body 110.
  • the first catching flange 131 of the first guide body 130 passes through the first drawing hole 123, and hangs outside of the first guide part 122 in which the first drawing hole 123 communicates with the inside. You lose.
  • the first intake regulator 140 may be moved to move away from or close to the first housing 110 and the first intake regulator 140 as much as the movement distance of the first intake regulator 140. ) And the space between the first housing 110 may be adjusted to adjust the suction amount according to the suction discharge of the indoor air.
  • a positioning groove 171 located on the reinforcement surface 152 of the height variable body 150 is formed in the height variable body 150, and the receiving piece 153 of the height variable body 150 is formed. End plate 170 is seated on the top of the support is further provided.
  • the closing plate 170 is further provided in the interior of the height variable body 150, for example, by closing the lower opening of the height variable body 150 which is located at the lowermost side of the first housing body 110 At the same time, the closing plate 170 is provided between the height variable body 150 and another height variable body 150, the height variable body 150 and another height variable body 150 to the closing plate 170 It can be partitioned by and used as a shelf.
  • the prefabricated ventilation device of the present invention includes a third assembly groove corresponding to any one of the first assembly groove 115 of the first housing 110 or the second assembly groove 151 of the height variable 150.
  • the second housing body 210 is provided on both sides of the upper end 211 and the second ventilator 212 is coupled to the inner center, and the second drawing hole 222 is covered on the front surface of the second housing body 210.
  • the second cover 220 having the second finger entry preventing portion 223, respectively, and the second cover 220 is inserted into the second housing body 210 from the rear surface of the second housing body 210.
  • the second guide body 230 drawn out to the second lead-out hole 222 of the 220 and the second fitting portion 241 fitted to the second guide body 230 are provided on the rear side and the second guide body 230 is provided.
  • the second barrier layer 242 is provided to move away from or close to the front surface of the second housing body 230 by being drawn in or drawn out from the second lead-out hole 222 of the guide body 230.
  • the second suction amount regulator 240 is further provided.
  • the second guide body 230 extends from the second catching flange 231 and the second catching flange 231 positioned outside the second lead-out hole 222 of the second cover 220.
  • the second housing body 210, the second cover 220, the second guide body 230, and the second suction control body 240 may include the first housing body 110 and the first cover 120, The same structure as the first guide body 130 and the first intake control body 140, the second housing 210 and the second cover 220, the second guide body 230, the second intake control body Detailed description of the configuration and operation of 240 will be omitted.
  • the second housing body 210, the second cover 220, the second guide body 230, and the second suction amount adjusting body 240 are further provided so that the second housing body 210 is directly at the lower end of the first housing body 110.
  • the housing body 210 may be connected or installed, or if necessary, the height variable body 150 may be located between the first housing 110 and the second housing 210, according to a consumer's choice. It is possible to install a variable to suit their indoor environment, so the installation and convenience are greatly improved.
  • first housing 110 and the second housing 210 are also connected by using the fixing body 160 or the first housing 110 and the height variable body using the fixing body 160. Of course, it can be installed by connecting the 150 and the second housing body (210).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
PCT/KR2013/005377 2012-07-09 2013-06-19 Installation de ventilation préfabriquée Ceased WO2014010838A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
KR20120005997 2012-07-09
KR20-2012-0005997 2012-07-09
KR20-2012-0011561 2012-12-10
KR20-2012-0011562 2012-12-10
KR20120011562 2012-12-10
KR20120011561 2012-12-10
KR2020130002960U KR200468308Y1 (ko) 2012-12-10 2013-04-17 조립식 환기장치
KR20-2013-0002960 2013-04-17

Publications (1)

Publication Number Publication Date
WO2014010838A1 true WO2014010838A1 (fr) 2014-01-16

Family

ID=49916242

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2013/005377 Ceased WO2014010838A1 (fr) 2012-07-09 2013-06-19 Installation de ventilation préfabriquée

Country Status (1)

Country Link
WO (1) WO2014010838A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105812634A (zh) * 2016-05-04 2016-07-27 湖州优创科技有限公司 一种能净化空气的视频会议用摄像机
CN107975878A (zh) * 2017-11-04 2018-05-01 林辉 一种适用于智能家居的健康型空气净化器
CN109695915A (zh) * 2018-11-19 2019-04-30 南安市瑞竣机械科技有限公司 一种便于安装稳固的防腐蚀中央空调
WO2020248520A1 (fr) * 2019-06-11 2020-12-17 广东美的制冷设备有限公司 Ensemble couvercle supérieur d'unité intérieure de climatiseur et unité intérieure de climatiseur
DE102021205381A1 (de) 2021-05-27 2022-12-01 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Charakterisieren von Kraftstoff
US11759830B2 (en) * 2023-04-17 2023-09-19 Junliang Zhang Electric dust blower and modular assembly method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5410754Y2 (fr) * 1973-11-14 1979-05-17
JPH1082540A (ja) * 1996-09-05 1998-03-31 Toshiba Corp 換気扇
JP2008190781A (ja) * 2007-02-05 2008-08-21 Mitsubishi Electric Corp 換気装置
KR20100009711U (ko) * 2009-03-25 2010-10-05 최구락 창틀고정용 환기장치
KR20120064536A (ko) * 2010-12-09 2012-06-19 이흑규 환풍기능을 구비한 창호

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5410754Y2 (fr) * 1973-11-14 1979-05-17
JPH1082540A (ja) * 1996-09-05 1998-03-31 Toshiba Corp 換気扇
JP2008190781A (ja) * 2007-02-05 2008-08-21 Mitsubishi Electric Corp 換気装置
KR20100009711U (ko) * 2009-03-25 2010-10-05 최구락 창틀고정용 환기장치
KR20120064536A (ko) * 2010-12-09 2012-06-19 이흑규 환풍기능을 구비한 창호

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105812634A (zh) * 2016-05-04 2016-07-27 湖州优创科技有限公司 一种能净化空气的视频会议用摄像机
CN105812634B (zh) * 2016-05-04 2018-12-04 浙江中博信息工程有限公司 一种能净化空气的视频会议用摄像机
CN107975878A (zh) * 2017-11-04 2018-05-01 林辉 一种适用于智能家居的健康型空气净化器
CN109695915A (zh) * 2018-11-19 2019-04-30 南安市瑞竣机械科技有限公司 一种便于安装稳固的防腐蚀中央空调
CN109695915B (zh) * 2018-11-19 2021-03-23 杭州宏成节能科技有限公司 一种便于安装稳固的防腐蚀中央空调
WO2020248520A1 (fr) * 2019-06-11 2020-12-17 广东美的制冷设备有限公司 Ensemble couvercle supérieur d'unité intérieure de climatiseur et unité intérieure de climatiseur
DE102021205381A1 (de) 2021-05-27 2022-12-01 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Charakterisieren von Kraftstoff
US11759830B2 (en) * 2023-04-17 2023-09-19 Junliang Zhang Electric dust blower and modular assembly method thereof

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