CN111573479B - Ventilation structure of elevator ceiling - Google Patents
Ventilation structure of elevator ceiling Download PDFInfo
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- CN111573479B CN111573479B CN202010406230.3A CN202010406230A CN111573479B CN 111573479 B CN111573479 B CN 111573479B CN 202010406230 A CN202010406230 A CN 202010406230A CN 111573479 B CN111573479 B CN 111573479B
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- elevator
- wall
- elevator car
- car body
- holes
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-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
- B66B11/024—Ventilation systems
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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
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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
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention belongs to the technical field of elevator ventilation equipment, and particularly relates to a ventilation structure of an elevator ceiling, which comprises an elevator car body, wherein two through holes are formed in the inner wall of the top of the elevator car body, an exhaust pipe and an air inlet pipe are respectively welded and fixed in the two through holes, cross rods are respectively welded and fixed in the exhaust pipe and the air inlet pipe, vertical shafts are respectively rotatably arranged on the two cross rods, ventilation fan blades are respectively welded and fixed at the tops of the two vertical shafts, first bevel gears are respectively welded and fixed at the bottom ends of the two vertical shafts, rotating holes are respectively formed in the inner wall of one side, close to each other, of the exhaust pipe and the air inlet pipe, and the same rotating shaft is rotatably arranged in the two rotating holes. The invention has high practicability, can ensure that the elevator and the outside air are always kept to circulate when the elevator works normally, thereby ensuring the air inside the elevator cage to be fresh, and simultaneously being convenient for replacing the filter cover for filtering the air, and being more convenient and faster.
Description
Technical Field
The invention relates to the technical field of elevator ventilation equipment, in particular to a ventilation structure of an elevator ceiling.
Background
An elevator is a motor-powered vertical lift provided with a box-like car for carrying persons or goods in a multi-storey building and also of the step type, with tread plates mounted for continuous travel on a track, commonly known as an escalator or a travelator, serving a fixed lifting device for a given storey, the vertical lift having a car which travels between at least two vertical rows of rigid guide rails, the car being dimensioned and configured to facilitate the passage of passengers in and out of or the loading and unloading of goods, and being used as a generic term for vertical traffic transport means in buildings, the ceiling of the vertical elevator car now usually comprising a ventilation duct or chimney which allows an air flow between the elevator car and the elevator shaft, the ventilation fan promoting the flow rate of the air in the chimney, the air in the elevator shaft usually passing through the ventilation duct or chimney directly into the elevator car in use, air circulation in the elevator car is promoted.
However, the ventilation mechanism of the existing elevator cannot keep the convection between the air inside the elevator car and the outside air, and meanwhile, the air inlet filtering net for filtering air cannot be replaced in time, so that the air entering the elevator car cannot be continuously replaced after being used for a long time, and the air entering the elevator car cannot be filtered, thereby affecting the cleaning degree of the air inside the elevator car.
Therefore, we have proposed a ventilation structure of an elevator ceiling for solving the above problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a ventilation structure of an elevator ceiling.
In order to achieve the purpose, the invention adopts the following technical scheme: a ventilation structure of an elevator ceiling comprises an elevator car body, wherein two through holes are formed in the inner wall of the top of the elevator car body, an exhaust pipe and an air inlet pipe are respectively welded and fixed in the two through holes, cross rods are respectively welded and fixed in the exhaust pipe and the air inlet pipe, vertical shafts are respectively rotatably installed on the two cross rods, ventilation fan blades are respectively welded and fixed at the tops of the two vertical shafts, first bevel gears are respectively welded and fixed at the bottoms of the two vertical shafts, rotating holes are respectively formed in the inner walls of one sides, close to each other, of the exhaust pipe and the air inlet pipe, the same rotating shaft is rotatably installed in the two rotating holes, one ends, close to each other, of the two rotating shafts respectively extend into the exhaust pipe and the air inlet pipe and are respectively welded and fixed with second bevel gears, the two second bevel gears are respectively meshed with the corresponding first bevel gears, a first gear is welded and fixed on the rotating shaft, and a motor is welded and fixed at the top of the elevator car body, a second gear is fixedly welded on an output shaft of the motor, the second gear is meshed with the first gear, two circular grooves are formed in the inner wall of the top of the elevator car body, cylinders are arranged in the circular grooves, the bottom ends of the two cylinders respectively extend out of the corresponding circular grooves and are fixedly welded with the same filter cover, clamping grooves are formed in the sides, far away from each other, of the two cylinders, two cavities are formed in the elevator car body, rectangular holes are formed in the inner wall, close to each other, of the two cavities, rectangular clamping columns are slidably mounted in the two rectangular holes, the two rectangular clamping columns respectively penetrate through the corresponding rectangular holes, one ends, close to each other, of the two rectangular clamping columns are respectively matched with the corresponding clamping grooves, annular blocks are slidably mounted in the cavities, the rectangular clamping columns are respectively fixedly welded with the inner walls of the corresponding annular blocks, and a first spring is fixedly welded on the inner wall, close to the circular grooves, of the cavities, the one end and the annular piece welded fastening that the circular slot was kept away from to first spring are in the same place, and first spring sliding sleeve establishes on rectangle card post, the triangle-shaped recess has been seted up to rectangle card post's bottom, the slide opening has been seted up on the bottom inner wall of cavity, slidable mounting has the ejector pin in the slide opening, the ejector pin runs through the slide opening, and the top of ejector pin and the inner wall sliding connection of triangle-shaped recess, the bottom welded fastening of ejector pin has the disc, the top welded fastening of disc has the second spring, the top of second spring and the top inner wall welded fastening of elevator car body are in the same place, and the second spring sliding sleeve establishes on the ejector pin.
Preferably, the top welded fastening of elevator car body has quick-witted case, first round hole has all been seted up on the both sides inner wall of machine case, the inner wall of pivot and two first round holes all rotates to be connected.
Preferably, the exhaust pipe and the air inlet pipe are fixedly welded with hollow protective covers.
Preferably, all welded fastening has the sealing washer in two through-holes, intake pipe and blast pipe respectively with the inner wall welded fastening of corresponding sealing washer together.
Preferably, a bearing is arranged in the rotating hole, an outer ring of the bearing is welded and fixed with the inner wall of the rotating hole, and an inner ring of the bearing is fixedly sleeved on the rotating shaft.
Preferably, the cross bar is provided with a second round hole, and the vertical shaft is rotatably connected with the inner wall of the second round hole.
Preferably, the top of the disc is fixedly welded with a corrugated pipe, the top end of the corrugated pipe is fixedly welded with the inner wall of the top of the elevator car body, and the corrugated pipe is sleeved on the second spring in a sliding manner.
Preferably, the top and the bottom of the annular block are respectively nested with a ball, and the two balls are respectively in rolling connection with the inner walls of the top and the bottom of the chamber.
Preferably, the stiffness coefficient of the first spring is 30N/m, and the stiffness coefficient of the second spring is 120N/m.
Compared with the prior art, the invention has the beneficial effects that: one side of the elevator car body is connected with an external power supply, wherein the motor and the external power supply are sequentially connected through a lead and form a loop, the motor always normally rotates when the elevator car body normally works, the motor rotates and drives a second gear to rotate, the second gear drives a meshed first gear to rotate, the first gear drives a rotating shaft to rotate, the rotating shaft drives two second bevel gears to rotate, the two second bevel gears drive the two first bevel gears to rotate in opposite directions, the two first bevel gears drive corresponding vertical shafts to rotate, the two vertical shafts drive two ventilating fan blades to rotate, the ventilating fan blades in the exhaust pipe can exhaust dirty air in the elevator car body, the ventilating fan blades in the air inlet pipe pump external fresh air into the elevator car body, and the elevator car body can form convection with the external fresh air, therefore, air in the elevator car body can be kept fresh all the time, when external dust enters the elevator car body through the air inlet pipe, the dust can be filtered by the filter cover, when the dust in the filter cover is accumulated too much, the two circular discs can be pulled downwards, the circular discs can drive the ejector rods to move downwards when stretching the second springs, the first springs push the annular blocks to be away from the rectangular holes while the ejector rods continuously move downwards, the annular blocks then drive the rectangular clamping columns to be separated from the corresponding clamping grooves, when the two clamping grooves are completely separated from the corresponding clamping grooves, people can take the filter cover connected to the two cylinders down from the inner wall of the top of the elevator car body, when the new filter cover is assembled, only the two cylinders on the new filter cover need to be inserted into the corresponding circular grooves, and when the cylinders enter the circular grooves, the two rectangular clamping columns are pushed to be away from each other, along with the continuous entering of the two cylinders into the corresponding circular grooves, the two rectangular clamping columns are clamped into the corresponding clamping grooves under the action of the corresponding first springs, and then the new filter cover is fixed on the inner wall of the top of the elevator car body again
The invention has high practicability, can ensure that the elevator and the outside air are always kept to circulate when the elevator works normally, thereby ensuring the air inside the elevator cage to be fresh, and simultaneously being convenient for replacing the filter cover for filtering the air, and being more convenient and faster.
Drawings
Fig. 1 is a front sectional structural schematic view of a ventilation structure of an elevator ceiling according to the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is an enlarged schematic view of portion B of FIG. 2;
FIG. 4 is an enlarged schematic view of a portion C of FIG. 2;
fig. 5 is an enlarged schematic view of a portion D in fig. 4.
In the figure: 1. an elevator car body; 2. a through hole; 3. an exhaust pipe; 4. an air inlet pipe; 5. a cross bar; 6. a vertical axis; 7. a ventilating fan blade; 8. a first bevel gear; 9. rotating the hole; 10. a rotating shaft; 11. a second bevel gear; 12. a first gear; 13. a motor; 14. a second gear; 15. a circular groove; 16. a cylinder; 17. a filter housing; 18. a card slot; 19. a card slot; 20. a rectangular hole; 21. a rectangular clamping column; 22. a ring block; 23. a first spring; 24. a triangular groove; 25. a slide hole; 26. a top rod; 27. a disc; 28. a second spring; 29. a case.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-5, the present embodiment provides a ventilation structure for an elevator ceiling, including an elevator car body 1, two through holes 2 are formed on an inner wall of a top portion of the elevator car body 1, an exhaust pipe 3 and an intake pipe 4 are respectively welded and fixed in the two through holes 2, cross rods 5 are respectively welded and fixed in the exhaust pipe 3 and the intake pipe 4, vertical shafts 6 are respectively rotatably mounted on the two cross rods 5, ventilation fan blades 7 are respectively welded and fixed on tops of the two vertical shafts 6, a first bevel gear 8 is respectively welded and fixed at bottom ends of the two vertical shafts 6, rotating holes 9 are respectively formed on inner walls of sides of the exhaust pipe 3 and the intake pipe 4, the same rotating shaft 10 is rotatably mounted in the two rotating holes 9, ends of the two rotating shafts 10 close to each other respectively extend into the exhaust pipe 3 and the intake pipe 4 and are welded and fixed with second bevel gears 11, and the two second bevel gears 11 are respectively engaged with the corresponding first bevel gears 8, a first gear 12 is welded and fixed on the rotating shaft 10, a motor 13 is welded and fixed on the top of the elevator car body 1, a second gear 14 is welded and fixed on an output shaft of the motor 13, the second gear 14 is meshed with the first gear 12, two circular grooves 15 are formed in the inner wall of the top of the elevator car body 1, cylinders 16 are arranged in the two circular grooves 15, the bottom ends of the two cylinders 16 extend out of the corresponding circular grooves 15 respectively and are welded and fixed with the same filter cover 17, clamping grooves 18 are formed in the sides, far away from each other, of the two cylinders 16, two cavities 19 are formed in the elevator car body 1, rectangular holes 20 are formed in the inner wall of one side, close to each other, of the two cavities 19, rectangular clamping columns 21 are arranged in the two rectangular holes 20 in a sliding mode, the two rectangular clamping columns 21 penetrate through the corresponding rectangular holes 20 respectively, and the ends, close to each other, of the two rectangular clamping columns 21 are matched with the corresponding clamping grooves 18 respectively, the chamber 19 is internally provided with an annular block 22 in a sliding way, the rectangular clamping columns 21 are respectively welded and fixed with the inner walls of the corresponding annular blocks 22, the inner wall of one side of the chamber 19 close to the circular groove 15 is welded and fixed with a first spring 23, one end of the first spring 23 far away from the circular groove 15 is welded and fixed with the annular block 22, the first spring 23 is slidably sleeved on the rectangular clamping column 21, the bottom of the rectangular clamping column 21 is provided with a triangular groove 24, the inner wall of the bottom of the cavity 19 is provided with a sliding hole 25, a mandril 26 is slidably arranged in the sliding hole 25, the mandril 26 penetrates through the sliding hole 25, the top end of the ejector rod 26 is connected with the inner wall of the triangular groove 24 in a sliding mode, the bottom end of the ejector rod 26 is fixedly welded with a disc 27, the top of the disc 27 is fixedly welded with a second spring 28, the top end of the second spring 28 is fixedly welded with the inner wall of the top of the elevator car body 1, and the second spring 28 is sleeved on the ejector rod 26 in a sliding mode;
a machine case 29 is fixedly welded on the top of an elevator car body 1, first round holes are formed in the inner walls of two sides of the machine case 29, a rotating shaft 10 is rotatably connected with the inner walls of the two first round holes, hollow protective covers are fixedly welded in an exhaust pipe 3 and an air inlet pipe 4, sealing rings are fixedly welded in two through holes 2, the air inlet pipe 4 and the exhaust pipe 3 are respectively welded with the inner walls of the corresponding sealing rings, a bearing is arranged in a rotating hole 9, the outer ring of the bearing is fixedly welded with the inner wall of the rotating hole 9, the inner ring of the bearing is fixedly sleeved on the rotating shaft 10, a second round hole is formed in a cross rod 5, a vertical shaft 6 is rotatably connected with the inner wall of the second round hole, a corrugated pipe is fixedly welded on the top of a disc 27, the top end of the corrugated pipe is fixedly welded with the inner wall of the top of the elevator car body 1, the corrugated pipe is sleeved on a second spring 28 in a sliding manner, balls are nested at the bottom of the top of an annular block 22, two balls are respectively connected with the top and bottom inner walls of the chamber 19 in a rolling way, the stiffness coefficient of the first spring 23 is 30N/m, and the stiffness coefficient of the second spring 28 is 120N/m
In this embodiment, an external power source is connected to one side of the elevator car body 1, wherein the motor 13 and the external power source are sequentially connected through a conducting wire to form a loop, when the elevator car body 1 normally works, the motor 13 always normally rotates, the motor 13 rotates and drives the second gear 13 to rotate, the second gear 13 drives the first gear 12 which is engaged with the first gear to rotate, the first gear 12 drives the rotating shaft 10 to rotate, the rotating shaft 10 drives the two second bevel gears 11 to rotate, the two second bevel gears 11 drive the two first bevel gears 8 to rotate in opposite directions, the two first bevel gears 8 drive the corresponding vertical shafts 6 to rotate, the two vertical shafts 6 drive the two ventilating fan blades 7 to rotate, the ventilating fan blades 7 in the exhaust pipe 3 can exhaust dirty air in the elevator car body 1, the ventilating fan blades 7 in the intake pipe 4 can exhaust fresh air from outside into the elevator car body 1, therefore, the elevator car body 1 can form convection with fresh air outside, so that the air in the elevator car body 1 can be kept fresh all the time.
In this embodiment, when external dust enters the elevator car body 1 through the air inlet pipe 4, the dust will be filtered by the filter cover 17, when the dust in the filter cover 17 is accumulated too much, the two disks 27 can be pulled downwards, the disks 27 can simultaneously drive the ejector rods 26 to move downwards when stretching the second springs 28, along with the continuous downward movement of the ejector rods 26, the first springs 23 can push the annular blocks 22 to be far away from the rectangular holes 20, the annular blocks 22 can drive the rectangular clamping columns 21 to be separated from the corresponding clamping grooves 18, along with the complete separation of the two clamping grooves 18 from the corresponding clamping grooves 18, people can take the filter cover 17 connected to the two cylinders 16 down from the inner wall of the top of the elevator car body 1, during the assembly of a new filter cover 17, only the two cylinders 16 on the new filter cover 17 need to be inserted into the corresponding circular grooves 15, along with the entry of the cylinders 16 into the circular grooves 15, the two rectangular clamping posts 21 will be pushed away from each other, and as the two cylinders 16 continuously enter the corresponding circular grooves 15, the two rectangular clamping posts 21 will be clamped into the corresponding clamping grooves 18 under the action of the corresponding first springs 23, so that the new filter housing 17 is fixed on the top inner wall of the elevator car body 1 again.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The utility model provides a ventilation structure of elevator ceiling, includes elevator car body (1), its characterized in that, seted up two through-holes (2) on the top inner wall of elevator car body (1), fixed mounting has blast pipe (3) and intake pipe (4) respectively in two through-holes (2), equal fixed mounting has horizontal pole (5) in blast pipe (3) and intake pipe (4), all rotates on two horizontal poles (5) and installs vertical axis (6), and the equal fixed mounting in top of two vertical axes (6) has ventilating fan leaf (7), and the equal fixed mounting in bottom of two vertical axes (6) has first conical gear (8), all seted up rotation hole (9) on the one side inner wall that blast pipe (3) and intake pipe (4) are close to each other, two rotate hole (9) internal rotation and install same pivot (10), and fixed mounting has second toper gear (8) in the one end that two pivots (10) are close to each other extends to blast pipe (3) and intake pipe (4) respectively The elevator car comprises a gear (11), two second bevel gears (11) are respectively meshed with corresponding first bevel gears (8), a first gear (12) is fixedly mounted on a rotating shaft (10), a motor (13) is fixedly mounted at the top of an elevator car body (1), a second gear (14) is fixedly mounted on an output shaft of the motor (13), the second gear (14) is meshed with the first gear (12), two circular grooves (15) are formed in the inner wall of the top of the elevator car body (1), cylinders (16) are arranged in the two circular grooves (15), the bottoms of the two cylinders (16) respectively extend to the outside of the corresponding circular grooves (15) and are fixedly mounted with the same filter cover (17), a clamping groove (18) is formed in one side, away from each other, of the two cylinders (16), two cavities (19) are formed in the elevator car body (1), rectangular holes (20) are formed in the inner wall of one side, close to each other, of each of the two cavities (19), rectangular clamping columns (21) are arranged in the two rectangular holes (20) in a sliding mode, the two rectangular clamping columns (21) penetrate through the corresponding rectangular holes (20) respectively, one ends, close to each other, of the two rectangular clamping columns (21) are matched with the corresponding clamping grooves (18) respectively, annular blocks (22) are arranged in the cavities (19) in a sliding mode, the rectangular clamping columns (21) are fixedly connected with the inner walls of the corresponding annular blocks (22) respectively, first springs (23) are fixedly arranged on the inner wall of one side, close to the circular grooves (15), of the first springs (23), one ends, far away from the circular grooves (15), of the first springs (23) are fixedly connected with the annular blocks (22), the first springs (23) are sleeved on the rectangular clamping columns (21) in a sliding mode, triangular grooves (24) are formed in the bottoms of the rectangular clamping columns (21), seted up slide opening (25) on the bottom inner wall of cavity (19), slidable mounting has ejector pin (26) in slide opening (25), ejector pin (26) run through slide opening (25), and the top of ejector pin (26) and the inner wall sliding connection of triangle-shaped recess (24), the bottom fixed mounting of ejector pin (26) has disc (27), the top fixed mounting of disc (27) has second spring (28), the top of second spring (28) and the top inner wall fixed connection of elevator car body (1), and second spring (28) slip cap is established on ejector pin (26).
2. The ventilation structure of the elevator ceiling as claimed in claim 1, wherein a machine case (29) is fixedly mounted on the top of the elevator car body (1), first round holes are formed in the inner walls of two sides of the machine case (29), and the rotating shaft (10) is rotatably connected with the inner walls of the two first round holes.
3. The ventilation structure of the elevator ceiling according to claim 1, wherein a hollow protection cover is fixedly installed in each of the exhaust pipe (3) and the intake pipe (4).
4. The ventilation structure of the elevator ceiling according to claim 1, characterized in that sealing rings are fixedly installed in both through holes (2), and the air inlet pipe (4) and the air outlet pipe (3) are respectively and fixedly connected with the inner walls of the corresponding sealing rings.
5. The ventilation structure of the elevator ceiling as claimed in claim 1, wherein a bearing is provided in the rotation hole (9), an outer ring of the bearing is fixedly connected with an inner wall of the rotation hole (9), and an inner ring of the bearing is fixedly sleeved on the rotation shaft (10).
6. The ventilation structure of the elevator ceiling as claimed in claim 1, wherein the cross bar (5) is provided with a second circular hole, and the vertical shaft (6) is rotatably connected with the inner wall of the second circular hole.
7. The ventilation structure of the elevator ceiling is characterized in that a corrugated pipe is fixedly installed at the top of the disc (27), the top end of the corrugated pipe is fixedly connected with the inner wall of the top of the elevator car body (1), and the corrugated pipe is slidably sleeved on the second spring (28).
8. An elevator ceiling ventilation structure as defined in claim 1, wherein said annular blocks (22) are each nested with balls, both of which are in rolling contact with the top and bottom inner walls of the chamber (19).
9. A ventilation structure of an elevator ceiling according to claim 1, characterized in that the stiffness coefficient of said first spring (23) is 30N/m and the stiffness coefficient of said second spring (28) is 120N/m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010406230.3A CN111573479B (en) | 2020-05-14 | 2020-05-14 | Ventilation structure of elevator ceiling |
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|---|---|---|---|
| CN202010406230.3A CN111573479B (en) | 2020-05-14 | 2020-05-14 | Ventilation structure of elevator ceiling |
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| CN111573479B true CN111573479B (en) | 2021-11-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112195352A (en) * | 2020-09-09 | 2021-01-08 | 湖南恒晟环保科技有限公司 | Comprehensive recovery device for bismuth in lead alloy smelting waste slag material |
| CN112744676B (en) * | 2020-12-24 | 2022-11-04 | 湖南富盈机电工程有限公司 | Ventilating exhaust fan assembly in elevator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1192060A (en) * | 1997-09-22 | 1999-04-06 | Hitachi Ltd | Cooler for elevator car |
| CN204702366U (en) * | 2015-06-17 | 2015-10-14 | 贵州天义电梯成套设备有限公司 | A kind of lift car with emergent scavenger fan |
| JP2017013987A (en) * | 2015-07-03 | 2017-01-19 | 三菱電機株式会社 | Elevator device |
| CN106761078B (en) * | 2017-01-18 | 2019-02-22 | 苏州欢颜电气有限公司 | A kind of curtain wall window elasticity magnetic locking device |
| CN207258969U (en) * | 2017-09-28 | 2018-04-20 | 布劳恩电梯有限公司 | A kind of net gas aeration structure of elevator |
| CN208222716U (en) * | 2018-05-16 | 2018-12-11 | 中山市莱恩电子科技有限公司 | A kind of leaf filter for the central air-conditioning being easily installed |
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