Smoke-proof elevator doors
The smoke-proof elevator door uses a door frame with guide sections and folding plates to create turbulence channels, addressing the issue of smoke penetration during fires, thereby delaying smoke entry and enhancing evacuation safety.
Patent Information
- Application Number
- TW115203326
- Authority / Receiving Office
- TW · TW
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2026-04-16
- Publication Date
- 2026-07-11
- Estimated Expiration
- 2036-04-15
AI Technical Summary
Existing elevator door structures fail to effectively block smoke during a fire, allowing high-temperature smoke to penetrate through gaps and spread rapidly to other floors, endangering lives and hindering evacuation.
A smoke-proof elevator door design featuring a door frame with a top frame divided into guide sections and folding plates forming turbulence channels to slow down smoke penetration, creating tortuous paths that delay smoke entry into the elevator shaft.
The design effectively slows down smoke penetration into the elevator shaft, reducing the chimney effect and providing additional time for evacuation by extending the smoke's path through tortuous channels.
Smart Images
Figure IMG-2_DRAW_115203326-A0305-14-0001-1 
Figure IMG-2_DRAW_115203326-A0305-14-0002-2 
Figure IMG-2_DRAW_115203326-A0305-14-0003-3
Abstract
Description
Smokeproof elevator door Technical Field
[0001] This work relates to elevator doors, specifically a type of smoke-proof elevator door. Prior Technology
[0002] The elevator door structure used in known buildings mainly consists of a door frame and a plurality of movable door panels installed within the door frame. These door panels can slide relative to the door frame to achieve an open or closed state. To ensure smooth movement of these door panels, a slight assembly gap is usually left at the connection between the top door frame and each door panel in existing elevator door structures. While the existing connection structure between the top of the door frame and these door panels can meet the basic requirements for opening and closing, it is insufficient in terms of smoke-blocking performance during a fire, and is unable to effectively block smoke.
[0003] When a fire occurs on the elevator shaft side, the high-temperature smoke, affected by the pressure difference, rapidly penetrates through the gaps and enters the elevator shaft side. Due to the significant chimney effect on the elevator shaft side, once smoke enters, it quickly rises and spreads to other floors of the building. This not only hinders escape but also seriously endangers the lives of people inside the building. Therefore, how to improve the structural design of elevator doors to effectively slow down the rate at which smoke penetrates to the shaft side is a problem that relevant operators and developers need to solve. Summary of the Invention
[0004] In view of this, the purpose of this invention is to provide a smoke-proof elevator door that has the function of delaying the entry of smoke into the elevator shaft.
[0005] To achieve the above objectives, this invention provides a smoke-proof elevator door, comprising a door frame, a first door panel, and a second door panel; wherein the door frame includes a top frame and two side frames, the two side frames being connected to the top frame; the first door panel and the second door panel are disposed between the two side frames in a manner that allows them to move along the top frame; wherein the top frame of the door frame has an upper plate, a side plate, a lower plate, a first folding plate, and a second folding plate, the upper plate and the lower plate being respectively connected to the top edge and bottom edge of the side plate; the top frame is divided into a first guide section and a second guide section, wherein the first folding plate is connected to the first guide section. The lower plate in the first guide section has a first plate width; the second folding plate connects to the lower plate in the second guide section, and the lower plate in the second guide section has a second plate width, wherein the first plate width is smaller than the second plate width; wherein the top edge of the first door panel is connected to a first partition, the first partition and the first folding plate are configured, and the first partition and the first folding plate form a first turbulence channel; wherein the top edge of the second door panel is connected to a second partition, the second partition and the second folding plate are configured, and the second partition and the second folding plate form a second turbulence channel.
[0006] The effect of this design is to slow down the speed at which smoke generated in the fire escapes from the fire site side to the shaft side through the tortuous flow channels such as the first and second baffle channels, so as to prevent the chimney effect from occurring on the shaft side, thereby buying time for personnel to evacuate. Simple Explanation of the Diagram
[0007] Figure 1 is a perspective view of a smoke-proof elevator door according to a preferred embodiment of this invention. Figure 2 is an exploded view of the smoke-proof elevator door of the preferred embodiment described above. Figure 3 is a perspective view of the top frame of the smoke-proof elevator door of the preferred embodiment of the present invention. Figure 4 is a partial perspective view of the top frame of the smoke-proof elevator door of the preferred embodiment of the present invention. Figure 5 is a side view of the smoke-proof elevator door of the preferred embodiment of the present invention. Figure 6 is a magnified view of part A marked in Figure 5. Figure 7 is a top view of the smoke-proof elevator door of the preferred embodiment of the present invention. Figure 8 is a cross-sectional view along direction 8-8 of Figure 7. Figure 9 is a cross-sectional view along direction 9-9 of Figure 7. Implementation
[0008] To more clearly illustrate this invention, preferred embodiments are described in detail below with reference to the accompanying drawings. Please refer to Figure 1, which shows a preferred embodiment of a smoke-proof elevator door 1. This smoke-proof elevator door 1 slows down the rate at which smoke from a fire escapes into the elevator shaft, thus reducing the chimney effect. The smoke-proof elevator door 1 includes a door frame 10, a first door panel 20, and a second door panel 30. The inner and outer sides of the door frame 10 are defined as a shaft side S1, closer to the elevator shaft, and a passenger side S2, farther from the elevator shaft and closer to the building interior.
[0009] Please refer to Figure 2. In this embodiment, the door frame 10 includes a top frame 12 and two side frames 14. The two side frames 14 are respectively connected to the two ends of the top frame 12. The structural features and related positions of the top frame 12 are described below.
[0010] Please refer to Figures 3 and 4. The top frame 12 has an upper plate 121, a side plate 122, a lower plate 123, a first folding plate 124 and a second folding plate 125, and the top frame 12 is divided into a first guide section L1 and a second guide section L2. The upper plate 121 and the lower plate 123 are respectively connected to the top edge and bottom edge of the side plate 122 and extend toward the wellbore side S1. The lower plate 123 is divided into two parts corresponding to the first guide section L1 and the second guide section L2. The lower plate 123 in the first guide section L1 has a first plate width W1, and the lower plate 123 in the second guide section L2 has a second plate width W2. The first plate width W1 is smaller than the second plate width W2, so that the lower plate 123 in the second guide section L2 protrudes from the lower plate 123 in the first guide section L1 along the wellbore side S1. The upper plate 121 has a third plate width W3, and both the first plate width W1 and the second plate width W2 are larger than the third plate width W3, so that the lower plate 123 protrudes from the upper plate 121 along the wellbore side S1.
[0011] Please refer to Figures 3, 6, 8, and 9. The first folding plate 124 connects to the lower plate 123 in the first guide section L1 and is connected to the side of the lower plate 123 adjacent to the wellbore side S1 (see Figure 3). The side plate 122 has a first height H1, and the first folding plate 124 has a second height H2, with the first height H1 being greater than the second height H2 (see Figure 6). With the above configuration, the upper plate 121, the side plate 122, the lower plate 123, and the first folding plate 124 in the first guide section L1 together form a first groove 126. The first groove 126 has a first opening 126a between the upper plate 121 and the first folding plate 124, and the first opening 126a faces the wellbore side S1 (see Figure 8).
[0012] The second folding plate 125 connects to the lower plate 123 in the second guide section L2 and is connected to the side of the lower plate 123 adjacent to the wellbore side S1 (see Figure 3). The second folding plate 125 has a third height H3, and the first height H1 is greater than the third height H3 (see Figure 6). With the above configuration, the upper plate 121, the side plate 122, the lower plate 123, and the second folding plate 125 in the second guide section L2 together form a second groove 127, and the second groove 127 has a second opening 127a between the upper plate 121 and the second folding plate 125, and the second opening 127a faces the wellbore side S1 (see Figure 9).
[0013] Please refer to Figures 2 and 7. The first door panel 20 and the second door panel 30 are disposed between the two side frames 14. From the passenger side S2 towards the shaft side S1, the sequence is: door frame 10, first door panel 20, and second door panel 30. The first door panel 20 and the second door panel 30 are respectively adjacent to the top frame 12 and correspond to the first guide section L1 and the second guide section L2 of the top frame 12. The first door panel 20 and the second door panel 30 can move relative to the top frame 12 to be in an open or closed state. In this embodiment, the smoke-proof elevator door 1 is in a closed state during use; therefore, the following description focuses on the first door panel 20 and the second door panel 30 in the closed state.
[0014] Please refer to Figures 5, 6 and 8. The top edge of the first door panel 20 is connected to a first partition 22. The first partition 22 has a first horizontal plate 222 and a first vertical plate 224. One side of the first horizontal plate 222 is fixed to the first door panel 20 and extends along the passenger side S2. The other side of the first horizontal plate 222 is connected to the first vertical plate 224. The first vertical plate 224 extends downward, so that the first vertical plate 224 of the first partition 22 is spaced apart from the first folding plate 124, and the first partition 22 and the first folding plate 124 form a first turbulence channel C1.
[0015] Specifically, a gap G1 is formed between the door frame 10 and the first door panel 20 by the first folding plate 124 and the first door panel 20; the first horizontal plate 222 extends into the first opening 126a along the riding side S2, so that the first horizontal plate 222 and the top edge of the first folding plate 124 form a gap G2; the first vertical plate 224 extends downward into the first groove 126, so that the first vertical plate 224 and the first folding plate 124 form a gap G3 and the first vertical plate 224 and the lower plate 123 form a gap G4, and the aforementioned gaps together form the first turbulence channel C1.
[0016] Please refer to Figures 5, 6 and 9. The top edge of the second door panel 30 is connected to a second partition 32. The second partition 32 has a second horizontal plate 322 and a second vertical plate 324. One side of the second horizontal plate 322 is fixed to the second door panel 30 and extends along the passenger side S2. The other side of the second horizontal plate 322 is connected to the second vertical plate 324. The second vertical plate 324 extends downward, so that the second vertical plate 324 of the second partition 32 is spaced apart from the second folding plate 125, and the second partition 32 and the second folding plate 125 form a second turbulence channel C2.
[0017] Specifically, a gap G5 is formed between the door frame 10 and the second door panel 30 by the second folding plate 125 and the second door panel 30; the second horizontal plate 322 extends into the second opening 127a along the riding side S2, so that the top edge of the second horizontal plate 322 and the second folding plate 125 are separated to form a gap G6; the second vertical plate 324 extends downward into the second groove 127, so that the second vertical plate 324 and the second folding plate 125 are separated to form a gap G7 and the second vertical plate 324 and the lower plate 123 are separated to form a gap G8, and the aforementioned gaps together form the second turbulence channel C2.
[0018] In other embodiments, the first partition 22 and the second partition 32 may have a structure with multiple bends. Taking the first partition 22 as an example, it is formed by alternating connections of a plurality of first horizontal plates 222 and first vertical plates 224; specifically, the first horizontal plates 222 extend toward the riding area side S2 or the shaft side S1 respectively, and are connected to the first vertical plates 224 extending downward or upward, so that the first partition 22 presents a continuous bend as a whole. In this way, the mutually spaced first horizontal plates 222 and first vertical plates 224 can form multiple layers of interlacing with the first folded plate 124 of the top frame 12, thereby forming a tortuous first flow channel C1; similarly, the second partition plate 32 can also be formed by alternating connections of a plurality of second horizontal plates 322 and second vertical plates 324, so that the mutually spaced second horizontal plates 322 and second vertical plates 324 can form multiple layers of interlacing with the second folded plate 125 of the top frame 12, thereby forming a tortuous second flow channel C2.
[0019] The above is a description of the composition of the smoke-proof elevator door 1 of a preferred embodiment of this invention. Its usage and effects will be described below.
[0020] Please refer to Figures 6, 8 and 9. The smoke-proof elevator door 1 of this embodiment is applicable to various buildings equipped with elevators. When a fire occurs on the passenger side S2 and smoke is generated, the smoke permeates to the shaft side S1 through the gap between the door frame 10, the first door panel 20 and the second door panel 30. The first bleed channel C1 and the second bleed channel C2 provide a tortuous path. Specifically, the path of the smoke generated by the fire through the first turbulence channel C1 is as follows: the smoke first enters the gap G1 between the first folding plate 124 and the first door panel 20 and rises upward, then is blocked by the first horizontal plate 222 and turns into the gap G2 between the top edge of the first horizontal plate 222 and the first folding plate 124; then, the smoke is blocked by the first vertical plate 224 and is again guided into the gap G3 between the first vertical plate 224 and the first folding plate 124 and flows downward; finally, the smoke passes through the lower plate 123 in the first guide section L1, is blocked and turns into the gap G4 between the first vertical plate 224 and the lower plate 123. The path of the smoke through the second turbulence channel C2 is as follows: the smoke first enters the gap G5 between the second folding plate 125 and the second door panel 30 and rises upwards. It is then blocked by the second horizontal plate 322 and redirected into the gap G6 between the top edge of the second horizontal plate 322 and the second folding plate 125. Next, the smoke is blocked by the second vertical plate 324 and guided again into the gap G7 between the second vertical plate 324 and the second folding plate 125, flowing downwards. Finally, after passing the lower plate 123 in the second guide section L2, the smoke is obstructed and redirected into the gap G8 between the second vertical plate 324 and the lower plate 123. By extending the smoke's path and reducing its flow resistance through this tortuous path, the speed at which the smoke enters the shaft side S1 and triggers the chimney effect is effectively slowed, thus providing more time for people inside the building to evacuate.
[0021] The above description is merely a preferred embodiment of this invention. Any equivalent changes made in accordance with the present invention and the claims should be included within the scope of this invention.
[0022] 1: Smoke-proof elevator door 10: Door frame 12: Top frame 121: On the tablet 122: Side panel 123: Lower the tablet 124: First folding plate 125:Second folding plate 126: First groove 126a: First opening 127: Second groove 127a: Second opening 14: Side frame 20: First door panel 22: First partition 222: First horizontal board 224: First upright board 30: Second door panel 32: Second partition 322: Second horizontal board 324: Second upright board C1: First spoiler channel C2: Second spoiler channel G1~G8: Gap H1: First Height H2: Second Altitude H3: Third Height L1: First guiding segment L2: Second guiding segment S1: Shaft side S2: Passenger side W1: First plate width W2: Second plate width W3: Third plate width
Claims
1. A smoke-proof elevator door, comprising: a door frame including a top frame and two side frames connected to the top frame; and a first door panel and a second door panel, disposed between the two side frames in a manner movable along the top frame; wherein, The top frame of the door frame has an upper plate, a side plate, a lower plate, a first folding plate, and a second folding plate. The upper plate and the lower plate are respectively connected to the top edge and bottom edge of the side plate. The top frame is divided into a first guide section and a second guide section. The first folding plate is connected to the lower plate in the first guide section, and the lower plate in the first guide section has a first plate width. The second folding plate is connected to the lower plate in the second guide section, and the lower plate in the second guide section has a second plate width, wherein the first plate width is smaller than the second plate width. The top edge of the first door panel is connected to a first partition, which is configured with the first folding plate, and the first partition and the first folding plate together form a first flow channel. The top edge of the second door panel is connected to a second partition, which is configured with the second folding plate, and the second partition and the second folding plate together form a second flow channel.
2. The smoke-proof elevator door as described in claim 1, wherein the first partition has a first horizontal plate and a first vertical plate, the first horizontal plate is fixed to the first door panel, the first vertical plate is connected to one side of the first horizontal plate, wherein the first folding plate and the first door panel are spaced apart to form a gap, the first horizontal plate and the top edge of the first folding plate are spaced apart to form a gap, the first vertical plate and the first folding plate are spaced apart to form a gap, and the aforementioned gaps together form the first turbulence channel.
3. The smoke-proof elevator door as described in claim 1, wherein the second partition has a second horizontal plate and a second vertical plate, the second horizontal plate is fixed to the second door panel, the second vertical plate is connected to one side of the second horizontal plate, wherein the second folding plate and the second door panel are spaced apart to form a gap, the second horizontal plate and the top edge of the second folding plate are spaced apart to form a gap, the second vertical plate and the second folding plate are spaced apart to form a gap, and the aforementioned gaps together form the second turbulence channel.