CN114837533B - Fireproof door with smoke flow blocking structure - Google Patents
Fireproof door with smoke flow blocking structure Download PDFInfo
- Publication number
- CN114837533B CN114837533B CN202210645969.9A CN202210645969A CN114837533B CN 114837533 B CN114837533 B CN 114837533B CN 202210645969 A CN202210645969 A CN 202210645969A CN 114837533 B CN114837533 B CN 114837533B
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- fixedly connected
- door
- fire
- plate
- door frame
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
- E06B5/164—Sealing arrangements between the door or window and its frame, e.g. intumescent seals specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/72—Power-operated mechanisms for wings with automatic actuation responsive to emergency conditions, e.g. fire
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Special Wing (AREA)
Abstract
The invention relates to a fireproof door with a smoke flow blocking structure, which comprises a fireproof door frame and a fireproof door plate, wherein one side of the fireproof door plate is rotationally connected with the fireproof door frame, one side, far away from a rotating shaft of the fireproof door plate, of the top of the fireproof door frame is fixedly connected with a mounting plate, the mounting plate is fixedly connected with a connecting cover, the top of the connecting cover is rotationally connected with a spring winding wheel, the bottom of a connecting rope of the spring winding wheel is fixedly connected with a trapezoidal connecting block, the fireproof door plate is fixedly connected with a U-shaped connecting plate relative to the trapezoidal connecting block, the door frame is provided with a trapezoidal connecting block connected with the spring winding wheel, the trapezoidal connecting block is limited by a wax rod, the door plate is not pulled by a door closer in normal use, the door is simpler to open, the wax rod is melted at high temperature when a fire disaster occurs, or smoke is sensed by a smoke sensor, the heater is started, the wax rod is melted, the trapezoidal connecting block 7 is lost to be limited and falls in the U-shaped connecting plate below, the fireproof door plate is connected with the spring winding wheel, and the door plate is closed, and the door plate is improved.
Description
Technical field:
the invention belongs to the technical field of protective equipment, and particularly relates to a fireproof door with a smoke flow blocking structure.
The background technology is as follows:
the fireproof door is a door capable of meeting fireproof and heat-insulating requirements in a certain time, is a fireproof partition with certain fireproof performance, such as a fireproof partition, an evacuation stairwell, a vertical shaft and the like, has the function of preventing fire spreading and smoke spreading besides the function of a common door, can prevent the fire spreading in a certain time, ensures personnel evacuation, and is basic fire-fighting equipment.
In the prior art, in order to ensure that the door plant can be closed fast to traditional prevent fire door, all can be equipped with the door closer between door plant and door frame generally, when not having the conflagration to take place, the door closer also can work, and it is comparatively difficult when leading to preventing fire door to open, often has the people to prevent fire door use thing to block, and is convenient current, leads to when the conflagration takes place, prevents fire door unable normal work, causes the harm to take place.
The invention comprises the following steps:
the invention aims to solve the problems and provide the fireproof door with the smoke flow blocking structure, the traditional door closer is omitted, the trapezoidal connecting block connected with the spring winding wheel is arranged on the door frame, the trapezoidal connecting block is limited by the wax rod, the door plate is not pulled by the door closer in normal use, the door is simpler to open, the wax rod is melted at high temperature when a fire disaster occurs, or the smoke sensor senses smoke, the heater is started, the wax rod is melted, the trapezoidal connecting block 7 loses the limit and falls into the U-shaped connecting plate below, the fireproof door plate is connected with the spring winding wheel, and the closing speed of the door plate is improved; the inside of fire prevention door frame is equipped with the strip of paper used for sealing, and the door plant is when normal use, and the strip of paper used for sealing is the door plant separation, reduces the frictional force between strip of sealing and the door frame, makes things convenient for the opening of fire prevention door plant, and when the conflagration took place, the high temperature will restrict the spacing wax piece of strip of paper used for sealing to melt, under the promotion of top No. two springs, the strip of paper used for sealing hugs closely the fire prevention door frame, prevents that smog from flowing from between door plant and the door frame.
In order to solve the problems, the invention provides a technical scheme that:
the utility model provides a prevent fire door with flue gas choked flow structure, includes fire door frame and fire door plant, one side and the fire door frame rotation of fire door plant are connected, the top of fire door frame and one side fixedly connected with mounting panel that keeps away from the fire door plant axis of rotation, mounting panel fixedly connected with connecting cover, the top of connecting cover rotates and is connected with the spring rolling wheel, the connecting rope bottom fixedly connected with trapezoidal connecting block of spring rolling wheel, the position fixedly connected with U-shaped connecting plate of fire door plant relative to trapezoidal connecting block, trapezoidal connecting block and U-shaped connecting plate peg graft;
the fire door frame is characterized in that sealing blocks are fixedly connected to two sides of four corners in the fire door frame, sealing strips are movably connected between two adjacent sealing blocks, and the sealing strips are in contact with the outer walls of the fire door plate.
As a preferable technical scheme of the invention, a supporting plate and a heater are oppositely arranged in the connecting cover and below the spring winding wheel, two smoke sensors are fixedly connected to two sides of the fireproof door frame, the smoke sensors are electrically connected with the heater, the smoke sensors sense smoke and open the heater, a wax rod is melted, a trapezoidal connecting block loses limit and falls into a U-shaped connecting plate below, the fireproof door plate is connected with the spring winding wheel, the closing speed of the door plate is improved, the fireproof door plate is connected with a rear end platform and can make a quick response, the heater is fixedly connected with the inner wall of the connecting cover, two ends of the supporting plate are fixedly connected with the inner wall of the connecting cover, a wax rod is detachably connected between the supporting plate and the heater, a jack is formed in the middle of the trapezoidal connecting block in an cutting mode, the wax rod penetrates through the jack of the trapezoidal connecting block and is spliced with the heating bin of the heater, and the wax rod is melted at high temperature when a fire disaster occurs.
As an optimal technical scheme of the invention, the bottom of the supporting plate is rotatably connected with the guide wheel relative to the position of the spring winding wheel, and when the fireproof door frame is opened, the spring winding wheel cannot wind due to overlarge deflection of the connecting rope is prevented through the guide of the guide wheel.
According to the preferable technical scheme, the two ends of the trapezoid connecting block are oppositely provided with the telescopic grooves, the trapezoid limiting blocks are inserted into the telescopic grooves, the first springs are fixedly connected between the trapezoid limiting blocks and the inside of the telescopic grooves, when the trapezoid limiting blocks fall down into the U-shaped connecting plate, the trapezoid limiting blocks at the two ends are retracted into the telescopic grooves, and after the trapezoid limiting blocks leave the U-shaped connecting plate, the trapezoid limiting blocks are moved out under the pushing of the first springs and are propped against the lower portion of the U-shaped connecting plate, so that the trapezoid connecting block is prevented from being separated from the U-shaped connecting plate.
As a preferable technical scheme of the invention, the U-shaped connecting plate comprises two opposite L-shaped plates, one ends of the two L-shaped plates, which are close to each other, are relatively connected with two rotating plates in a rotating way, a torsion spring is arranged on a rotating shaft sleeve of each rotating plate, a limiting plate is fixedly connected to one side, which is far away from a fireproof door frame, of the L-shaped plate, and when the U-shaped connecting plate is detached, the trapezoidal connecting block can be taken down by pressing the rotating plates, so that the U-shaped connecting plate is convenient to maintain.
As a preferable technical scheme of the invention, a chute is oppositely cut on one side, close to each other, of each sealing block, a second connecting plate is connected between the two opposite chutes in a sliding way, the sealing strip is fixedly connected with the second connecting plate, a plurality of second springs are fixedly connected between the second connecting plate and the inner wall of the fireproof door frame at equal intervals, a hole is formed in the middle of each sealing block, opposite to the chute, and a limiting wax block is inserted in the hole.
As a preferable technical scheme of the invention, the supporting force of the limiting wax block is larger than the thrust of the second spring, so that the limiting wax block is prevented from being extruded and broken due to the overlarge thrust of the second spring in normal limiting.
The invention has the beneficial effects that: the traditional door closer is canceled in the fireproof door, the trapezoidal connecting block connected with the spring winding wheel is arranged on the door frame, the trapezoidal connecting block is limited by the wax rod, the door plate is not pulled by the door closer in normal use, the door is simpler to open, the wax rod is melted at high temperature when a fire disaster occurs, or the smoke sensor senses smoke, the heater is started, the wax rod is melted, the trapezoidal connecting block loses limitation and falls into the U-shaped connecting plate below, the fireproof door plate is connected with the spring winding wheel, and the closing speed of the door plate is improved;
the inside of fire prevention door frame is equipped with the strip of paper used for sealing, and the door plant is when normal use, and the strip of paper used for sealing is the door plant separation, reduces the frictional force between strip of sealing and the door frame, makes things convenient for the opening of fire prevention door plant, and when the conflagration took place, the high temperature will restrict the spacing wax piece of strip of paper used for sealing to melt, under the promotion of top No. two springs, the strip of paper used for sealing hugs closely the fire prevention door frame, prevents that smog from flowing from between door plant and the door frame.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view of the connecting cover of the present invention;
FIG. 3 is a schematic diagram of the connection structure of the trapezoid connecting block and the U-shaped connecting plate;
FIG. 4 is a schematic view of the cross-sectional structure of the trapezoidal connecting block of the present invention;
FIG. 5 is a schematic view of the structure of the U-shaped connecting plate of the present invention;
FIG. 6 is a schematic diagram of the connection structure of the seal of the present invention;
fig. 7 is an enlarged schematic view of the structure of the present invention at a.
In the figure: 1. fireproof door frames; 2. a fire door panel; 3. a mounting plate; 4. a connection cover; 5. a U-shaped connecting plate; 51. an L-shaped plate; 52. a rotating plate; 53. a limiting plate; 6. a spring winding wheel; 7. a trapezoidal connecting block; 8. a smoke sensor; 9. a support plate; 10. a wax stick; 11. a guide wheel; 12. a jack; 13. a telescopic slot; 14. a first spring; 15. a trapezoid limiting block; 16. a heater; 17. sealing blocks; 18. a chute; 19. a second connecting plate; 20. a second spring; 21. a seal; 22. and limiting the wax block.
The specific embodiment is as follows:
as shown in fig. 1-5, the present embodiment adopts the following technical scheme: the utility model provides a prevent fire door with flue gas choked flow structure, including fire door frame 1 and fire door plant 2, one side and fire door plant 1 rotation of fire door plant 2 are connected, the top of fire door frame 1 and the one side fixedly connected with mounting panel 3 of keeping away from fire door plant 2 axis of rotation, mounting panel 3 fixedly connected with connecting cover 4, the top of connecting cover 4 rotates and is connected with spring rolling wheel 6, the connecting rope bottom fixedly connected with trapezoidal connecting block 7 of spring rolling wheel 6, the position fixedly connected with U-shaped connecting plate 5 of fire door plant 2 relative trapezoidal connecting block 7, trapezoidal connecting block 7 is pegged graft with U-shaped connecting plate 5, can be with trapezoidal connecting block 7 and fire door plant 2 connection;
the inside of connecting cover 4 and be located spring rolling wheel 6 the below be equipped with backup pad 9 and heater 16 relatively, two smoke transducer 8 of both sides relative fixedly connected with of fire prevention door frame 1, smoke transducer 8 and heater 16 electric connection, smoke transducer 8 sense smog, open heater 16, make wax stick 10 melt, trapezoidal connecting block 7 loses spacing in the U-shaped connecting plate of drop below, be connected fire prevention door plate 2 and spring rolling wheel 6, improve door plate closing rate, and be connected with the rear end platform, can make quick response, heater 16 and the inner wall fixed connection of connecting cover 4, the both ends of backup pad 9 and the inner wall fixed connection of connecting cover 4, can dismantle between backup pad 9 and the heater 16 and be connected with wax stick 10, the middle part of trapezoidal connecting block 7 is seted up and is equipped with jack 12, jack 12 and the heating storehouse grafting of heater 16 of trapezoidal connecting block 7 are passed to wax stick 10, when the conflagration takes place, high temperature melts the wax stick.
The bottom of backup pad 9 rotates relative spring reel 6's position and is connected with leading wheel 11, when fire door frame 1 was opened, through the direction of leading wheel 11, prevents that the connecting rope from leading spring reel 11 unable rolling because of the skew is too big.
The both ends of trapezoidal connecting block 7 are relative the cutting and are equipped with expansion groove 13, and the inside grafting of expansion groove 13 has trapezoidal stopper 15, fixedly connected with spring 14 between the inside of trapezoidal stopper 15 and expansion groove 13, and when trapezoidal stopper 15 whereabouts dropped to U-shaped connecting plate 5 inside, in the expansion groove was retrieved to trapezoidal stopper 15 at both ends, after trapezoidal stopper 15 left U-shaped connecting plate 5, under the promotion of spring 14 No. one, trapezoidal stopper 15 shifted out, supported in the below of U-shaped connecting plate 5, prevented trapezoidal connecting block 7 and U-shaped connecting plate 5 separation.
The U-shaped connecting plate 5 includes two relative L shaped plates 51, and the relative rotation of the one end that two L shaped plates 51 are close to each other is connected with two rotation boards 52, and the rotation axle sleeve of rotation board 52 is equipped with the torsional spring, and the relative rotation board 52 position of L shaped plate 51 just keeps away from one side fixedly connected with limiting plate 53 of fire door frame 1, and when dismantling, press rotation board 52 can take off trapezoidal connecting block 7, convenient maintenance.
During normal use, the fireproof door plate 2 is connected with the fireproof door frame 1 only through the rotating shafts such as the hinge, the door opening is convenient, when a fire disaster occurs, the high temperature melts the wax rod 10, or the smoke is generated by burning, the smoke sensor 8 detects the smoke, the heater 16 is controlled to be started, the heater 16 melts the wax rod 10, the trapezoid connecting block 7 which is supported by the wax rod 10 is lost, the falling of the trapezoid connecting block 7 is inserted into the U-shaped connecting plate 5 of the lower fireproof door plate 1, the fireproof door plate 2 needs to overcome the winding force of the spring winding wheel 6 when being started, even if the door is forgotten to be closed, the spring winding wheel 6 can also pull the fireproof door plate 2 to be closed towards the fireproof door frame 1, and the normal use is improved, so that the device is convenient and meanwhile has higher safety.
The traditional door closer is canceled, the fireproof door frame 1 is provided with the trapezoid connecting block 7 connected with the spring winding wheel 6, the trapezoid connecting block 7 is limited by the wax rod 10, the fireproof door plate 2 is not pulled by the door closer in normal use, the door is opened simply, the wax rod 10 is melted at high temperature or the smoke sensor 8 senses smoke when a fire disaster occurs, the heater 16 is started to melt the wax rod 10, the trapezoid connecting block 7 loses the limit and falls into the U-shaped connecting plate 5 below, the fireproof door plate 2 is connected with the spring winding wheel 6, and the closing speed of the door plate is improved;
example two
As shown in fig. 6-7, the present embodiment adopts the following technical scheme:
two sides of the four corners in the fireproof door frame 1 are fixedly connected with sealing blocks 17, sealing strips 21 are movably connected between two adjacent sealing blocks 17, the sealing strips 21 are in contact with the outer wall of the fireproof door plate 2, sliding grooves 18 are oppositely formed in one sides, close to each other, of the two opposite sealing blocks 17, a second connecting plate 19 is slidably connected between the two opposite sliding grooves 18, the sealing strips 21 are fixedly connected with the second connecting plate 19, a plurality of second springs 20 are fixedly connected between the second connecting plate 19 and the inner wall of the fireproof door frame 1 at equal intervals, holes are formed in the middle positions of the sealing blocks 17, opposite to the sliding grooves 18, limiting wax blocks 22 are inserted into the holes, the supporting force of the limiting wax blocks 22 is larger than the thrust of the second springs 20, and extrusion breakage of the limiting wax blocks 22 due to overlarge thrust of the second springs 20 during normal limiting.
The inside of fire door frame 1 is equipped with strip of paper used sealing 21, and fire door plant 2 is when normal use, strip of paper used sealing 21 is with fire door plant 2 separation, reduces the frictional force between strip of paper used sealing 21 and the door frame, makes things convenient for fire door plant 2 to open, and when the conflagration took place, high temperature will restrict the spacing wax piece 22 of strip of paper used sealing 21 to melt, under the promotion of top No. two spring 20, strip of paper used sealing 21 hugs closely fire door frame 1, prevents that smog from flowing between fire door plant 2 and the fire door frame 1.
While the basic principles and main features of the present invention and advantages of the present invention have been shown and described, it will be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, which are described in the foregoing specification merely illustrate the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a prevent fire door with flue gas choked flow structure, includes fire door frame (1) and fire door plant (2), its characterized in that, one side and fire door frame (1) of fire door plant (2) rotate to be connected, one side fixedly connected with mounting panel (3) of fire door frame (1) top and keeping away from fire door plant (2) axis of rotation, mounting panel (3) fixedly connected with connecting cover (4), the top rotation of connecting cover (4) is connected with spring rolling wheel (6), the connecting rope bottom fixedly connected with trapezoidal connecting block (7) of spring rolling wheel (6), the position fixedly connected with U-shaped connecting plate (5) of fire door plant (2) relative trapezoidal connecting block (7), trapezoidal connecting block (7) are pegged graft with U-shaped connecting plate (5);
two sides of four corners in the fireproof door frame (1) are fixedly connected with sealing blocks (17), sealing strips (21) are movably connected between two adjacent sealing blocks (17), the sealing strips (21) are contacted with the outer walls of the fireproof door plate (2),
inside and the below that is located spring rolling wheel (6) of connecting cover (4) are equipped with backup pad (9) and heater (16) relatively, two smoke transducer (8) of both sides relative fixedly connected with of fire prevention door frame (1), smoke transducer (8) and heater (16) electric connection, and be connected with the rear end platform, inner wall fixed connection of heater (16) and connecting cover (4), the both ends and the inner wall fixed connection of connecting cover (4) of backup pad (9), can dismantle between backup pad (9) and heater (16) and be connected with wax stick (10), the middle part of trapezoidal connecting block (7) is seted up and is equipped with jack (12), the jack (12) of trapezoidal connecting block (7) are passed in wax stick (10) are pegged graft with the heating storehouse of heater (16).
2. A fire rated door having a smoke blocking structure as defined in claim 1, wherein: the bottom of the supporting plate (9) is rotatably connected with a guide wheel (11) relative to the position of the spring winding wheel (6).
3. A fire rated door having a smoke blocking structure as defined in claim 1, wherein: the two ends of the trapezoid connecting block (7) are oppositely provided with telescopic grooves (13), trapezoid limiting blocks (15) are inserted into the telescopic grooves (13), and a number one spring (14) is fixedly connected between the trapezoid limiting blocks (15) and the inside of the telescopic grooves (13).
4. A fire rated door having a smoke blocking structure as defined in claim 1, wherein: the U-shaped connecting plate (5) comprises two opposite L-shaped plates (51), two ends, close to each other, of the L-shaped plates (51) are connected with two rotating plates (52) in a relative rotation mode, torsion springs are arranged on rotating shaft sleeves of the rotating plates (52), and limiting plates (53) are fixedly connected to one sides, away from the fireproof door frame (1), of the L-shaped plates (51) in positions corresponding to the rotating plates (52).
5. A fire rated door having a smoke blocking structure as defined in claim 1, wherein: two relative sealing blocks (17) are close to one another one side relative cutting is equipped with spout (18), and two relative sliding connection has No. two connecting plates (19) between spout (18), strip of paper used for sealing (21) and No. two connecting plates (19) fixed connection, equidistance fixedly connected with No. two springs (20) between No. two connecting plates (19) and the inner wall of fire prevention door frame (1), the hole has been seted up in sealing block (17) relative spout (18) middle part position, and the inside grafting of hole has spacing wax piece (22).
6. A fire rated door having a smoke blocking structure according to claim 5 wherein: the supporting force of the limiting wax block (22) is larger than the thrust of the second spring (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210645969.9A CN114837533B (en) | 2022-06-09 | 2022-06-09 | Fireproof door with smoke flow blocking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210645969.9A CN114837533B (en) | 2022-06-09 | 2022-06-09 | Fireproof door with smoke flow blocking structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114837533A CN114837533A (en) | 2022-08-02 |
| CN114837533B true CN114837533B (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210645969.9A Active CN114837533B (en) | 2022-06-09 | 2022-06-09 | Fireproof door with smoke flow blocking structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN114837533B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116696218B (en) * | 2023-08-04 | 2023-11-10 | 青岛茳森工程有限公司 | High-efficient safe fire door that prevents of separation flue gas |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2328832A1 (en) * | 1975-10-22 | 1977-05-20 | Gubri Sa Ets L | Double skin fire trap door - has light and ventilation panel with cut-off panel closed by spring when heat melts retaining pin |
| EP1703067A2 (en) * | 2005-03-14 | 2006-09-20 | Hodapp GmbH & Co. KG | Fire and smokeproof door for closing door openings |
| CN106522792A (en) * | 2016-12-01 | 2017-03-22 | 重庆金华兴门业有限公司 | Fireproof door capable of being opened automatically |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101597891B1 (en) * | 2013-03-28 | 2016-02-25 | 박동섭 | Water film forming fire protecting doorframe and its construction method |
| JP3205227U (en) * | 2016-03-11 | 2016-07-14 | ハーボア ハイライト リミテッド | Fire door with new smoke-proof performance |
| CN210396546U (en) * | 2019-03-15 | 2020-04-24 | 海南智弘智能信息化工程有限公司 | Prevent fire door with intelligent fire monitoring system |
| CN211851529U (en) * | 2020-01-15 | 2020-11-03 | 北京蓝盾金属门窗厂 | Environment-friendly fireproof door |
| CN111963030B (en) * | 2020-08-29 | 2022-01-25 | 湖南远东人防设备有限公司 | Fireproof isolation door |
| CN215056814U (en) * | 2021-03-17 | 2021-12-07 | 北京金长城门窗有限公司 | Steel-wood fireproof door |
| CN216690874U (en) * | 2021-11-04 | 2022-06-07 | 江阴市强达装饰材料有限公司 | Fire door is prevented to safe seal type |
-
2022
- 2022-06-09 CN CN202210645969.9A patent/CN114837533B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2328832A1 (en) * | 1975-10-22 | 1977-05-20 | Gubri Sa Ets L | Double skin fire trap door - has light and ventilation panel with cut-off panel closed by spring when heat melts retaining pin |
| EP1703067A2 (en) * | 2005-03-14 | 2006-09-20 | Hodapp GmbH & Co. KG | Fire and smokeproof door for closing door openings |
| CN106522792A (en) * | 2016-12-01 | 2017-03-22 | 重庆金华兴门业有限公司 | Fireproof door capable of being opened automatically |
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| Publication number | Publication date |
|---|---|
| CN114837533A (en) | 2022-08-02 |
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