CN111271801A - Natural ventilation device for upper part of building - Google Patents

Natural ventilation device for upper part of building Download PDF

Info

Publication number
CN111271801A
CN111271801A CN201811473340.0A CN201811473340A CN111271801A CN 111271801 A CN111271801 A CN 111271801A CN 201811473340 A CN201811473340 A CN 201811473340A CN 111271801 A CN111271801 A CN 111271801A
Authority
CN
China
Prior art keywords
exhaust system
air outlet
air
cover body
baffle
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.)
Granted
Application number
CN201811473340.0A
Other languages
Chinese (zh)
Other versions
CN111271801B (en
Inventor
张庭嘉
Original Assignee
张庭嘉
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
Application filed by 张庭嘉 filed Critical 张庭嘉
Priority to CN201811473340.0A priority Critical patent/CN111271801B/en
Publication of CN111271801A publication Critical patent/CN111271801A/en
Application granted granted Critical
Publication of CN111271801B publication Critical patent/CN111271801B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/02Roof ventilation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/082Grilles, registers or guards
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F2007/004Natural ventilation using convection

Abstract

A natural ventilation device for the upper part of a building comprises an upper inclined plane air inlet and exhaust system, a side top surface exhaust system and a top plane exhaust system. The upper inclined plane exhaust system is provided with an outer cover body, the top end of the outer cover body is connected with the back hook baffle plates, and rain baffles, a guide plate extending downwards, a receiving groove part and a back splash baffle plate are arranged between the back hook baffle plates; the side top surface exhaust system is provided with a cover body arranged outside the upper side air outlet, the front end of the cover body is provided with an air outlet, an outer baffle is arranged in the air outlet, an inner baffle is connected in the outer baffle, rain baffles are arranged at the air outlets on two sides of the outer baffle, and inclined guide plates are arranged at the upper end and the lower end of the upper side air outlet; the front and the back of the top plane exhaust system are additionally provided with an air guide plate and a back cover body, the back cover body is connected with an air inlet of the side top plane exhaust system, and an air outlet of the back cover body is externally connected with the air guide plate; the air guide plate is removed to form an upper inclined plane air inlet system. All the systems of the invention are provided with the rain baffle and the water bearing structure, which not only can provide good exhaust effect, but also can effectively isolate external rainwater from permeating and lead the air at the top to flow so as to achieve the effect of indoor cooling.

Description

Natural ventilation device for upper part of building
Technical Field
The present invention relates to a natural ventilation device for the upper part of a building, and more particularly, to a device which can provide air circulation conversion to the upper end of various buildings through design.
Background
Because the inside of the iron sheet building body of factory building or warehouse is sultry, and then lead to operational environment not good, consequently most operators all can install exhaust fan in building body wall or roof additional to make the internal air of building circulate, and reach the effect of cooling.
However, the fan needs to be driven by electricity, which increases the operating cost, and in rainy days, the fan device cannot effectively remove rainwater, so as to avoid the moisture of the water entering the building.
Furthermore, there is a closed space between the roof at the upper end of the building and the indoor ceiling, which is difficult to introduce airflow into the closed space, so that the hot air cannot be effectively discharged, so that the hot air is accumulated on the upper end of the building, and it is difficult to achieve good cooling.
Disclosure of Invention
The invention aims to provide a natural ventilation device at the upper part of a building, which can enable hot air to flow out more smoothly, effectively shield and prevent rainwater from being directly sprayed into an air inlet and exhaust device and effectively reduce the indoor temperature. .
The invention provides a natural ventilation device for the upper part of a building, which mainly comprises an upper inclined plane air inlet and exhaust system, a side top surface exhaust system and a top plane exhaust system, wherein the upper inclined plane air inlet and exhaust system, the side top surface exhaust system and the top plane exhaust system are arranged at the upper end part of the building;
the upper inclined plane exhaust system is arranged outside an exhaust outlet at the top side of the roof and mainly comprises outer cover bodies at two sides, the topmost parts of the two outer cover bodies are connected with a downward-arranged back-hooking baffle, an air outlet is surrounded between the two back-hooking baffle, a plurality of rain baffles are arranged between the two back-hooking baffle plates, a guide plate extends downwards from the lower end of the central rain baffle plate, the lower end of the guide plate is provided with a bearing groove part, a plurality of back-splashing baffles are arranged inside the bearing groove part, and the bottom end of the bearing groove part is provided with side drain holes at two sides of the upper inclined plane exhaust system;
the side top surface exhaust system is provided with a cover body arranged outside the upper side exhaust outlet, the front end of the cover body is provided with an air outlet, a longitudinal outer baffle plate is inwards arranged at the central position in the air outlet, an inner baffle plate is connected inside the outer baffle plate, a plurality of rain baffles are arranged at the air outlet at the two sides of the outer baffle plate, inclined guide plates are arranged at the upper end and the lower end of the upper side exhaust outlet, and a drain hole is formed in the bottom of the cover body;
the top plane exhaust system is erected at the top plane of a building by utilizing a side top surface exhaust system, and consists of a wind guide plate and a rear cover body which is additionally arranged in front and at the back, wherein the rear cover body is arranged above the top air outlet and is connected with an air inlet of the side top surface exhaust system, and an air outlet of the side top surface exhaust system is externally connected with the wind guide plate; after the structure of the air guide plate is removed by the top plane exhaust system, the structure and the application can be converted into an upper inclined plane air inlet system, the upper inclined plane air inlet system is erected outside the top side opening of the roof, and a fender is additionally arranged at the air outlet of the top plane exhaust system.
The upper inclined plane exhaust system, the side top surface exhaust system, the top plane exhaust system and the upper inclined plane air inlet system are all arranged at the upper end part of the building.
Preferably, the upper inclined plane exhaust system is installed at a position higher than the upper inclined plane intake system.
The invention can provide a proper exhaust device aiming at the upper parts of various buildings, so that the hot air can flow more smoothly; the ventilation devices are both provided with outer baffles or rain baffles, which can effectively block and prevent rainwater from being directly sprayed into the air intake and exhaust device, thereby achieving good waterproof effect; in addition, an independent air intake and exhaust structure design is provided for the closed space at the upper part of the building, so that hot air is not accumulated at the top of the building, and the effect of effectively reducing the indoor temperature is achieved. Accordingly, each air intake and exhaust system of the present invention is provided with a plurality of rain baffles and a water bearing structure at the lower end, so that the present invention not only provides good air exhaust effect, but also effectively isolates the infiltration of external rain water, and the upper inclined plane air intake system can be suitable for the introduction of air flow of a closed space at the top of a building, and is matched with the upper inclined plane air exhaust system to exhaust hot air, thereby effectively circulating the top air to achieve the effect of indoor temperature reduction.
Drawings
FIG. 1 is a schematic view of the installation of an exhaust system A on an upper inclined plane.
Fig. 2 is a schematic structural diagram of an upper inclined plane exhaust system a.
FIG. 3 is a schematic view of the installation of the exhaust system B.
Fig. 4 is a schematic structural diagram of an upper inclined plane exhaust system B.
FIG. 5 is a schematic view of the installation of the exhaust system C.
FIG. 6 is a schematic view of the upper ramp exhaust system C.
FIG. 7 is a schematic side top exhaust system installation.
FIG. 8 is a side cross-sectional schematic view of a side top exhaust system.
FIG. 9 is a schematic top cross-sectional view of a side top exhaust system.
FIG. 10 is a schematic top plan exhaust system configuration.
FIG. 11 is a schematic view of an upper ramp intake system configuration.
FIG. 12 is a diagram of an embodiment of an upper ramp intake and exhaust system.
Description of the symbols in the drawings
10 roof 11 top side air outlet
12 upper side exhaust port and 13 top exhaust port
14 top side opening 15 closed space
20 Upper inclined plane exhaust system A
21 outer cover 22 back hook baffle
23 weather shield 24 outlet
25 guide plate 26 receiving groove part
27 splash baffle 28 outer drainage hole
30 upper inclined plane exhaust system B
31 outer cover 32 back hook baffle
33 rain shield 34 outlet
35 guide plate 36 receiving groove part
37 splash baffle 38 outer drain hole
40 upper inclined plane exhaust system C
41 outer cover 42 hook back baffle
43 rain shield 44 outlet
45 guide plate 46 receiving groove part
47 outer discharge hole of splash baffle 48
50 side roof exhaust system
51 cover 52 outer baffle
53 inner baffle 54 air outlet
55 rain shield 56 inclined guide plate
57 drain hole 58 air inlet
59 lappet
60 top plane exhaust system
61 rear cover 62 wind guide plate
63 lappet 70 upper inclined plane air intake system
Detailed Description
So that the manner in which the features and characteristics of the present invention can be understood and appreciated, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings, in which:
first, referring to fig. 1 and 2, the present invention mainly installs an upper inclined plane exhaust system a20 on a roof 10 of a building, the upper inclined plane exhaust system a20 is installed outside an exhaust outlet 11 on the top side of the roof 10, and mainly includes two side outer covers 21, the topmost ends of the two outer covers 21 are connected with a downward hook baffle 22, a plurality of rain baffles 23 are installed at the gap between the two hook baffles 22, two guide plates 25 extend to both sides from the lower end of the central rain baffle 23, the lower ends of the two guide plates 25 are respectively provided with a receiving groove 26, a plurality of back splash baffles 27 are installed inside the receiving groove 26, and the bottom end of the receiving groove 26 is provided with side drain holes 28 on both sides of the upper inclined plane exhaust system a 20.
Referring to fig. 3 and 4, an upper inclined exhaust system B30 is mainly installed on the roof 10 of the building, an upper inclined exhaust system B30 is installed outside the top side exhaust outlet 11 of the roof 10, two side outer covers 31 are mainly provided, the topmost ends of the two outer covers 31 are connected with a downward hook baffle 32, a plurality of rain baffles 33 are arranged at the gap between the two hook baffles 32, two guide plates 35 extend from the lower end of the central rain baffle 33 to both sides, the lower ends of the two guide plates 35 are connected with a receiving groove 36, a plurality of back splash baffles 37 are arranged inside the receiving groove 36, and the bottom ends of the receiving groove 36 are provided with side drain holes 38 on both sides of the upper inclined exhaust system B30.
Referring to fig. 5 and 6, an upper inclined exhaust system C40 is mainly installed on the roof 10 of the building, the upper inclined exhaust system C40 is installed outside the top side exhaust outlet 11 of the roof 10, there are mainly two side outer covers 41, the topmost ends of the two outer covers 41 are connected with a downward hook baffle 42, a plurality of rain baffles 43 are installed at the gap between the two hook baffles 42, a guide plate 45 extends downward from the lower end of the central rain baffle 43, the lower end of the guide plate 45 is connected with the two side receiving groove portions 46, a plurality of back splash baffles 47 are installed inside the receiving groove portions 46, and the bottom end of the receiving groove portion 46 is provided with side drain holes 48 on both sides of the upper inclined exhaust system C40.
The three kinds of exhaust systems with upper inclined planes are all arranged on the inclined plane of the roof 10, when hot air flows upwards and enters through the top side exhaust outlet 11, the hot air flows to the left and right spaces respectively when encountering the bearing groove parts 26, 36 and 46, and the hot air is compressed in the outer cover bodies 21, 31 and 41 on the two sides, bypasses the bearing groove parts 26, 36 and 46 through pushing and then is exhausted from the air outlets 24, 34 and 44; when it rains, the rain water is sprayed from the air outlets 24, 34, 44, and the rain baffles 23, 33, 43 can block most of the sprayed rain force, and part of the penetrated rain water falls into the receiving slot portions 26, 36, 46 and is discharged from the outer water discharge holes 28, 38, 48 at the two sides, and the splash-back baffles 27, 37, 47 can further prevent the splashing of the falling rain water, so as to effectively prevent the splashed rain water from splashing into the roof top side air outlet 11.
Referring to fig. 7, 8 and 9, the side top exhaust system 50 includes a cover 51 installed outside the upper side exhaust outlet 12, an air outlet 54 is opened at the front end of the cover 51, a longitudinal outer baffle 52 is installed inward at the center of the air outlet 54, an inner baffle 53 is connected inside the outer baffle 52, a plurality of rain baffles 55 are installed at the air outlets 54 at the two sides of the outer baffle 52, an inclined guide plate 56 is installed at the upper and lower ends of the upper side exhaust outlet 12, and a drain hole 57 is opened at the bottom of the cover 51; the side top exhaust system 50 can solve the problem that the exhaust device cannot be installed at the top end of the building, and after the hot air flows upwards through the upper side exhaust outlet 12, the hot air flows to the left and right spaces respectively when encountering the inner baffles 53, and the hot air is compressed in the covers 51 at the two sides, bypasses the inner baffles 53 through pushing and is then exhausted from the air outlet 54; when it rains, the rain shield 55, the outer baffle 52 and the inner baffle 53 can block the rain and concentrate the rain into the lower drain hole 57, so as to effectively block the rain from splashing into the upper side exhaust outlet 12.
In addition, as shown in fig. 10, the top plane exhaust system 60 is erected at the top plane of the building by using the side top surface exhaust system 50, and is formed by additionally installing an air guiding plate 62 and a rear cover body 61 in front and rear, wherein the rear cover body 61 is installed above the top exhaust port 13 and is connected with the air inlet 58 of the side top surface exhaust system 50, and the air outlet 54 of the side top surface exhaust system 50 is externally connected with the air guiding plate 62; because the inclined plane design of the air guiding plate 62 can make the external air flow slide upwards, so as to attract the air in the air guiding plate 62 to flow out, the hot air enters the rear cover body 61 from the top air outlet 13, and is attracted into the air guiding plate 62 through the side top exhaust system 50 to be exhausted, and the fender 63 of the air guiding plate 62 can effectively prevent the infiltration of rainwater.
Referring to fig. 11 and 12, after the top plane exhaust system 60 removes the structure of the air guiding plate 62, the structure and purpose thereof can be converted into an upper inclined plane air intake system 70, the upper inclined plane air intake system 70 is erected outside the top side opening 14, a fender 59 is added to the air outlet 54 of the top plane exhaust system 60 to block rainwater, and the external air enters from the air outlet 54 of the top plane exhaust system 60, and the upper inclined plane air intake system 70 mainly provides an independent air intake and exhaust structure design for the enclosed space 15 at the upper part of the building, the upper inclined plane air intake system 70 guides the air flow into the enclosed space 15 at the top part of the building, and the upper inclined plane exhaust systems 20, 30 and 40 are matched to exhaust the hot air, so that the hot air is not accumulated at the top part of the building, thereby achieving the effect of effectively reducing the indoor temperature.
It should be understood, however, that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Claims (3)

1. The natural ventilation device for the upper part of the building is characterized by comprising an upper inclined plane exhaust system, a side top surface exhaust system and a top plane exhaust system, wherein the upper inclined plane exhaust system, the side top surface exhaust system and the top plane exhaust system are arranged at the upper end part of the building;
the upper inclined plane exhaust system is arranged outside an exhaust outlet at the top side of the roof and is provided with outer cover bodies at two sides, the topmost parts of the two outer cover bodies are connected with a downward-arranged back-hooking baffle, an air outlet is surrounded between the two back-hooking baffle plates, a plurality of rain baffles are arranged between the two back-hooking baffle plates, a guide plate extends downwards from the lower end of the central rain baffle plate, the lower end of the guide plate is provided with a bearing groove part, a plurality of back-splashing baffle plates are arranged inside the bearing groove part, and the bottom end of the bearing groove part is provided with side drain holes on two side surfaces of the upper inclined plane exhaust system;
the side top surface exhaust system is provided with a cover body arranged outside the upper side air outlet, the front end of the cover body is provided with an air outlet, a longitudinal outer baffle plate is inwards arranged at the central position in the air outlet, an inner baffle plate is connected inside the outer baffle plate, a plurality of rain baffles are arranged at the air outlet at the two sides of the outer baffle plate, the upper end and the lower end of the upper side air outlet are both provided with an inclined guide plate, and the bottom of the cover body is provided with a drain hole;
the top plane exhaust system is erected at the top plane of a building by utilizing a side top surface exhaust system, and is formed by additionally arranging an air guide plate and a rear cover body in the front and at the back, wherein the rear cover body is arranged above the top air outlet and is connected with an air inlet of the side top surface exhaust system, and an air outlet of the side top surface exhaust system is connected with the air guide plate.
2. The natural ventilation device at the upper part of the building is characterized by comprising an upper inclined plane air inlet system, a side top surface exhaust system and a top plane exhaust system, wherein the upper inclined plane air inlet system, the side top surface exhaust system and the top plane exhaust system are arranged at the upper end part of the building;
the upper inclined plane exhaust system is arranged outside an exhaust outlet at the top side of the roof and is provided with outer cover bodies at two sides, the topmost parts of the two outer cover bodies are connected with a downward-arranged back-hooking baffle, an air outlet is surrounded between the two back-hooking baffle plates, a plurality of rain baffles are arranged between the two back-hooking baffle plates, a guide plate extends downwards from the lower end of the central rain baffle plate, the lower end of the guide plate is provided with a bearing groove part, a plurality of back-splashing baffle plates are arranged inside the bearing groove part, and the bottom end of the bearing groove part is provided with side drain holes on two side surfaces of the upper inclined plane exhaust system;
the side top surface exhaust system is provided with a cover body arranged outside the upper side air outlet, the front end of the cover body is provided with an air outlet, a longitudinal outer baffle plate is inwards arranged at the central position in the air outlet, an inner baffle plate is connected inside the outer baffle plate, a plurality of rain baffles are arranged at the air outlet at the two sides of the outer baffle plate, the upper end and the lower end of the upper side air outlet are both provided with an inclined guide plate, and the bottom of the cover body is provided with a drain hole;
go up inclined plane air intake system and utilize side top surface exhaust system to erect in building top plane department, add and be equipped with the back cover body, wherein this back cover body is installed in top side air exit top and is linked up side top surface exhaust system's income wind gap to be equipped with the fender in side top plane exhaust system's air outlet.
3. The natural ventilation apparatus for the upper part of a building of claim 1, wherein the upper slope air discharge system is installed higher than the upper slope air intake system.
CN201811473340.0A 2018-12-04 2018-12-04 Natural ventilation device for upper part of building Active CN111271801B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811473340.0A CN111271801B (en) 2018-12-04 2018-12-04 Natural ventilation device for upper part of building

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811473340.0A CN111271801B (en) 2018-12-04 2018-12-04 Natural ventilation device for upper part of building

Publications (2)

Publication Number Publication Date
CN111271801A true CN111271801A (en) 2020-06-12
CN111271801B CN111271801B (en) 2021-07-09

Family

ID=70996609

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811473340.0A Active CN111271801B (en) 2018-12-04 2018-12-04 Natural ventilation device for upper part of building

Country Status (1)

Country Link
CN (1) CN111271801B (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003041726A (en) * 2001-07-27 2003-02-13 Shin Nikkei Co Ltd Ventilating device for roof
CN200940303Y (en) * 2006-08-18 2007-08-29 陈嘉钦 Natural ventilation structure placed on roof
CN200986285Y (en) * 2006-10-09 2007-12-05 梁鹏 Housetop natural ventilator
CN201652695U (en) * 2010-04-20 2010-11-24 黄永炎 Stream guidance structure of natural ventilation device on roof
CN201652694U (en) * 2010-04-20 2010-11-24 黄永炎 Roof natural ventilation device with lifting structure
CN201852235U (en) * 2010-11-17 2011-06-01 锦州鹏翔电力轻钢设备有限公司 Closed roof ventilator
CN203361490U (en) * 2013-04-23 2013-12-25 南京士兴钢结构安装有限公司 Natural ventilation improved device applied to roof
CN207335053U (en) * 2017-09-13 2018-05-08 黄振利 A kind of improvement of Air Exhaust Heat Dissipating Double-fuselage
CN207515146U (en) * 2017-11-21 2018-06-19 成都煜明装饰工程有限公司 A kind of building energy conservation aeration structure

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003041726A (en) * 2001-07-27 2003-02-13 Shin Nikkei Co Ltd Ventilating device for roof
CN200940303Y (en) * 2006-08-18 2007-08-29 陈嘉钦 Natural ventilation structure placed on roof
CN200986285Y (en) * 2006-10-09 2007-12-05 梁鹏 Housetop natural ventilator
CN201652695U (en) * 2010-04-20 2010-11-24 黄永炎 Stream guidance structure of natural ventilation device on roof
CN201652694U (en) * 2010-04-20 2010-11-24 黄永炎 Roof natural ventilation device with lifting structure
CN201852235U (en) * 2010-11-17 2011-06-01 锦州鹏翔电力轻钢设备有限公司 Closed roof ventilator
CN203361490U (en) * 2013-04-23 2013-12-25 南京士兴钢结构安装有限公司 Natural ventilation improved device applied to roof
CN207335053U (en) * 2017-09-13 2018-05-08 黄振利 A kind of improvement of Air Exhaust Heat Dissipating Double-fuselage
CN207515146U (en) * 2017-11-21 2018-06-19 成都煜明装饰工程有限公司 A kind of building energy conservation aeration structure

Also Published As

Publication number Publication date
CN111271801B (en) 2021-07-09

Similar Documents

Publication Publication Date Title
US10018368B2 (en) Snow proof roof vent
CN209731797U (en) A kind of communication equipment cable cabinet water-tight device
CN105864990A (en) Fresh air system and wind gap structure thereof
CN209929087U (en) Box type transformer
CN205919477U (en) New trend system and wind gap structure thereof
CN111271801B (en) Natural ventilation device for upper part of building
CN208887002U (en) Natural air inlet and outlet device
CN107560131A (en) A kind of blast cap and ventilating system
TWI683077B (en) Natural ventilation in the upper part of the building
CN113353229A (en) Water-inflow-preventing louver ventilation structure
CN210717945U (en) Rain-proof hood
CN201610134U (en) Rain shield and drainage device of locomotive air duct
CN204947357U (en) A kind of waterproof power distribution cabinet
CN113446688A (en) Natural ventilation device for building
TWI723809B (en) Building natural ventilation system
CN210379834U (en) Automatically controlled cabinet prevents into rain shutter
CN204947391U (en) A kind of protection against the tide and be beneficial to the power distribution cabinet of draining
CN105451493A (en) Internally stable environmental control cabinet
CN214673550U (en) Dampproofing outdoor switch board
CN213937533U (en) Air inlet protector and shelter power station
CN218562891U (en) Combined structure of staircase and ventilating shaft
CN205355605U (en) Ventilation cooling structure of container of integrated electrical equipment cabinet
CN219671439U (en) Cable protection device and cable protection system for cable trench
CN216355607U (en) Electric cabinet with ventilation structure
CN217501147U (en) Embedded install elevator vestibule space smoke exhaust structure additional and embedded install elevator additional

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant