CN112554727A - Two-closed two-open type cold curtain fireproof door and window system - Google Patents

Two-closed two-open type cold curtain fireproof door and window system Download PDF

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Publication number
CN112554727A
CN112554727A CN202011564985.2A CN202011564985A CN112554727A CN 112554727 A CN112554727 A CN 112554727A CN 202011564985 A CN202011564985 A CN 202011564985A CN 112554727 A CN112554727 A CN 112554727A
Authority
CN
China
Prior art keywords
cold curtain
joint
plate
window system
closed
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.)
Pending
Application number
CN202011564985.2A
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Chinese (zh)
Inventor
谢斌泉
其他发明人请求不公开姓名
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Jianzhi Curtain Wall Installation Design Co Ltd
Hunan Goldwell New Materials Technology Co Ltd
Original Assignee
Hunan Jianzhi Curtain Wall Installation Design Co Ltd
Hunan Goldwell New Materials Technology Co Ltd
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 Hunan Jianzhi Curtain Wall Installation Design Co Ltd, Hunan Goldwell New Materials Technology Co Ltd filed Critical Hunan Jianzhi Curtain Wall Installation Design Co Ltd
Priority to CN202011564985.2A priority Critical patent/CN112554727A/en
Publication of CN112554727A publication Critical patent/CN112554727A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
    • E06B3/6715—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light specially adapted for increased thermal insulation or for controlled passage of light
    • 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
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/06—Single frames
    • E06B3/08—Constructions depending on the use of specified materials
    • E06B3/12—Constructions depending on the use of specified materials of metal
    • E06B3/14—Constructions depending on the use of specified materials of metal of special cross-section
    • E06B3/16—Hollow frames of special construction, e.g. made of folded sheet metal or of two or more section parts connected together
    • 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
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/54—Fixing of glass panes or like plates
    • E06B3/56—Fixing of glass panes or like plates by means of putty, cement, or adhesives only
    • 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
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/54—Fixing of glass panes or like plates
    • E06B3/58—Fixing of glass panes or like plates by means of borders, cleats, or the like
    • E06B3/5807—Fixing of glass panes or like plates by means of borders, cleats, or the like not adjustable
    • 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
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • 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
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • 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
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • E06B3/667—Connectors therefor
    • 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
    • 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
    • E06B5/165—Fireproof windows

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Special Wing (AREA)

Abstract

The invention discloses a two-closed two-open type cold curtain fireproof door and window system which comprises a steel frame formed by enclosing and connecting four steel frames, wherein a frame opening with permeability is ensured in the steel frame, clamping edges are formed on the inner side walls of two opposite steel frames, clamping pieces are arranged on the inner side walls of the other two opposite steel frames, pressing strips are arranged on the inner side walls of the four steel frames, fireproof plates are clamped between the pressing strips and the corresponding clamping pieces and between the pressing strips and the clamping edges, a cold curtain plate with a heat insulation function is arranged on the steel frame, and covers the steel frame and the frame opening and is positioned outside the frame opening. The door and window system has the advantages of simple and reliable structure, low cost, heat insulation and preservation performance and fireproof performance.

Description

Two-closed two-open type cold curtain fireproof door and window system
Technical Field
The invention mainly relates to the field of constructional engineering, in particular to a double-closing and double-opening cold curtain fireproof door and window system.
Background
With the national requirements on the performance of the fireproof window, the requirements on the fire resistance integrity are met, and meanwhile, excellent air tightness, water tightness and heat insulation performance are required to be ensured.
Traditional fire window needs to guarantee heat insulating ability (low K value) and fire-resistant integrality simultaneously often hardly to realize, can only make the bridge cut-off form with frame system, and glass makes fire prevention glass can satisfy the requirement basically, and its cost is very high, but the frame system of this kind of bridge cut-off form, cross sectional shape is complicated, only is applicable to aluminium frame system, can't realize in the better steel frame system of fire behavior.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a double-closed double-open cold curtain fireproof door and window system which is simple and reliable in structure, low in cost and has heat insulation performance and fireproof performance.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a two close two open cold curtain fire door and window systems, includes and encloses by four steel frames and close the steel frame that connects the formation, the frame mouth that has guaranteed the permeability in the steel frame, the shaping has the joint limit on the inside wall of two relative steel frames, all installs joint spare on the inside wall of two other relative steel frames, all installs the layering on the inside wall of four steel frames, it has the PLASTIC LAMINATED to press from both sides between layering and corresponding joint spare and the joint limit, steel frame facial make-up is equipped with the cold curtain board that has thermal-insulated heat preservation function, the cold curtain board covers steel frame and frame mouth and is located outside the frame mouth.
As a further improvement of the above technical solution:
the fireproof plate and the cold curtain plate are connected, and a heat insulation gap is formed between the fireproof plate and the cold curtain plate.
Form between PLASTIC LAMINATED and the cold curtain board and glue, form between cold curtain board and the steel frame and glue.
The fireproof plate is made of fireproof glass, and the cold curtain plate is made of energy-saving glass.
The joint spare and joint limit and the colloid joint between PLASTIC LAMINATED and the cold curtain board.
Be provided with the rigidity cardboard in the colloid between PLASTIC LAMINATED and the cold curtain board, joint spare and joint limit joint are in the rigidity cardboard.
The joint spare includes interconnect's connecting plate and joint board, the connecting plate passes through the bolt and is connected with the steel frame of corresponding side, the joint integrated circuit board is connected in the rigid cardboard.
The distance from the bolt on the connecting plate to the cold curtain plate is greater than the distance from the fireproof plate to the cold curtain plate.
The pressing strips are connected with the steel frames on the corresponding sides through bolts.
And a covering edge for covering the corresponding pressing strip is formed on the steel frame.
Compared with the prior art, the invention has the advantages that:
the invention discloses a two-closed two-open type cold curtain fireproof door and window system which comprises a steel frame formed by enclosing and connecting four steel frames, wherein a frame opening with permeability is formed in the steel frame, clamping edges are formed on the inner side walls of the two opposite steel frames, clamping pieces are arranged on the inner side walls of the other two opposite steel frames, pressing strips are arranged on the inner side walls of the four steel frames, fireproof plates are clamped between the pressing strips and the corresponding clamping pieces and the clamping edges, a cold curtain plate with heat insulation and preservation functions is arranged on the steel frame, and covers the steel frame and the frame opening and is positioned outside the frame opening. During the installation, earlier utilize two joint limits as the location benchmark, press the both sides of PLASTIC LAMINATED in the joint edge, again with two joint spare with install on the inside wall of corresponding steel frame, make two joint spares form to hold in the palm the corresponding side of PLASTIC LAMINATED, then install the layering on the inside wall of corresponding steel frame to ensure that joint limit, joint spare and layering form the centre gripping to the PLASTIC LAMINATED, install cold curtain board on the steel frame at last, make cold curtain board cover steel frame and frame mouth. In the structure, the fireproof plate is arranged in the frame opening and is matched with the steel frame to form a complete fireproof body, so that the fireproof performance of the whole structure is ensured; and then, the cold curtain plate with the heat insulation function is installed outside the frame opening, and further covers the whole steel frame and the frame opening, so that a layer of cold curtain structure is formed outside the steel frame, and a bridge cut-off structure is formed between the steel frame and the outside, so that the heat insulation performance is ensured. The whole structure is simple and reliable; the steel framework does not need to be made into a complex section shape, so that the cost is reduced; meanwhile, the fireproof heat-insulating fireproof door has heat-insulating performance and fireproof performance.
Drawings
FIG. 1 is a schematic front view of the structure of embodiment 1 of the present invention;
FIG. 2 is a schematic view of a transverse cross-sectional structure of embodiment 1 of the present invention;
FIG. 3 is a schematic vertical sectional view of embodiment 1 of the present invention;
FIG. 4 is a schematic view of a transverse cross-sectional structure of embodiment 2 of the present invention;
fig. 5 is a schematic vertical sectional structure of embodiment 2 of the present invention.
The reference numerals in the figures denote:
1. a steel frame; 11. a steel frame; 111. covering the edges; 12. a frame opening; 13. clamping and connecting edges; 2. a clamping piece; 21. a connecting plate; 22. a clamping and connecting plate; 3. layering; 4. a fire-proof plate; 5. a cold curtain plate; 6. a heat insulation gap; 7. rigid snap-gauge.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
Example 1:
fig. 1 to 3 show a first embodiment of a two-closed and two-open cold curtain fireproof door and window system according to the present invention, which includes a steel frame 1 formed by four steel frames 11 in a surrounding and connecting manner, a frame opening 12 with ensured permeability is provided in the steel frame 1, clamping edges 13 are formed on the inner side walls of two opposite steel frames 11, clamping members 2 are respectively provided on the inner side walls of the other two opposite steel frames 11, pressing strips 3 are respectively provided on the inner side walls of the four steel frames 11, fire-proof plates 4 are clamped between the pressing strips 3 and the corresponding clamping members 2 and the clamping edges 13, a cold curtain plate 5 with heat insulation function is provided on the steel frame 1, and the cold curtain plate 5 covers the steel frame 1 and the frame opening 12 and is located outside the frame opening 12. During installation, firstly, two clamping edges 13 are used as positioning reference, two sides of the fireproof plate 4 are pressed on the clamping edges 13, then two clamping pieces 2 are installed on the inner side wall of the corresponding steel frame 11, the two clamping pieces 2 support the corresponding side of the fireproof plate 4, then the pressing strip 3 is installed on the inner side wall of the corresponding steel frame 11, the clamping edges 13, the clamping pieces 2 and the pressing strip 3 are ensured to clamp the fireproof plate 4, and finally the cold curtain plate 5 is installed on the steel frame 1, so that the cold curtain plate 5 covers the steel frame 1 and the frame opening 12. In the structure, the fireproof plate 4 is arranged in the frame opening 12 and is matched with the steel frame 1 to form a complete fireproof body, so that the fireproof performance of the whole structure is ensured; and then through installing the cold curtain board 5 with thermal-insulated heat preservation function outside the frame mouth 12, cold curtain board 5 further covers holistic steel frame 1 and frame mouth 12, has formed the cold curtain structure of one deck in the steel frame 1 outside equivalently, forms the bridge cut-off structure between steel frame 1 and the outside equivalently, has guaranteed thermal-insulated heat preservation performance. The whole structure is simple and reliable; the steel framework 1 does not need to be made into a complex section shape, so that the cost is reduced; meanwhile, the fireproof heat-insulating fireproof door has heat-insulating performance and fireproof performance.
In this embodiment, the connection between the fireproof plate 4 and the cold curtain plate 5 is formed, and a heat insulation gap 6 is formed between the fireproof plate 4 and the cold curtain plate 5. In this structure, through the thermal-insulated heat preservation clearance 6 between PLASTIC LAMINATED 4 and the cold curtain board 5, further form the air bridge cut-off structure, improved thermal-insulated heat preservation performance.
In this embodiment, the fireproof plate 4 and the cold curtain plate 5 are bonded, and the cold curtain plate 5 and the steel frame 1 are bonded. Set up like this for cold curtain board 5 all forms with steel frame 1 and PLASTIC LAMINATED 4 and is connected, has guaranteed cold curtain board 5's stability and reliability.
In this embodiment, the fireproof plate 4 is made of fireproof glass, and the cold curtain plate 5 is made of energy-saving glass. The fireproof plate 4 and the cold curtain plate 5 are both made of glass, so that the permeability of the frame opening 12 is ensured, and meanwhile, the fireproof glass and the energy-saving glass have heat insulation performance and fireproof performance.
In this embodiment, the clamping member 2 and the clamping edge 13 are clamped with the fireproof plate 4 and the cold curtain plate 5 through the glue. In this structure, form the joint through joint spare 2 and joint limit 13 and PLASTIC LAMINATED 4 and cold curtain board 5 between the colloid, improved the stability and the reliability of PLASTIC LAMINATED 4.
In this embodiment, be provided with rigid cardboard 7 in the colloid between PLASTIC LAMINATED 4 and the cold curtain board 5, joint spare 2 and joint limit 13 joint are in rigid cardboard 7. This rigidity cardboard 7 is built-in the colloid, through joint spare 2 and joint limit 13 and rigidity cardboard 7's joint when guaranteeing stability and the reliability of connecting, forms the one deck guard action to the colloid again.
In this embodiment, joint spare 2 includes interconnect's connecting plate 21 and joint board 22, and connecting plate 21 passes through the bolt to be connected with the steel frame 11 of corresponding side, and joint board 22 joint is in rigid cardboard 7. In this structure, connecting plate 21 and joint board 22 form the L shaped plate, guarantee to form with steel frame 11 and rigid cardboard 7 and be connected, and its simple structure is reliable.
In this embodiment, the distance from the bolt on the connecting plate 21 to the cold curtain plate 5 is greater than the distance from the fireproof plate 4 to the cold curtain plate 5. Due to the arrangement, an operation space is ensured when the bolt is fastened, and the convenience in installation is improved.
In this embodiment, the hold-down strip 3 is connected to the steel frame 11 on the corresponding side by bolts. The structure is simple and reliable.
Example 2:
fig. 4 to 5 show a second embodiment of the two-closed three-open cold curtain fireproof door and window system of the present invention, which is substantially the same as embodiment 1 except that: in this embodiment, the covering edge 111 for covering the corresponding pressing strip 3 is formed on the steel frame 11. In the structure, the covering edge 111 covers the pressing strip 3, so that on one hand, no gap can be seen from the outside, and the attractiveness is ensured; and on the other hand, the pressing strip 3 is limited, so that the connection stability is improved.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims (10)

1. The utility model provides a cold curtain fire prevention door and window system of two closets two openings which characterized in that: include and enclose to close steel frame (1) of connecting formation by four steel frames (11), frame mouth (12) that have guaranteed the permeability in steel frame (1), the shaping has joint limit (13) on the inside wall of two relative steel frames (11), all installs joint spare (2) on the inside wall of two relative steel frames (11) in addition, all installs layering (3) on the inside wall of four steel frames (11), it has PLASTIC LAMINATED (4) to press from both sides between layering (3) and corresponding joint spare (2) and joint limit (13), steel frame (1) facial make-up is equipped with cold curtain board (5) that have thermal-insulated heat preservation function, cold curtain board (5) cover steel frame (1) and frame mouth (12) and lie in outside frame mouth (12).
2. The two-closed and two-open cold curtain fire door and window system of claim 1, wherein: the fireproof plate (4) and the cold curtain plate (5) are connected, and a heat insulation gap (6) is formed between the fireproof plate (4) and the cold curtain plate (5).
3. The two-closed and two-open cold curtain fire door and window system of claim 2, wherein: form between PLASTIC LAMINATED (4) and cold curtain board (5) and glue, form between cold curtain board (5) and the steel frame (1) and glue.
4. The two-closed and two-open cold curtain fire door and window system of claim 3, wherein: the fireproof plate (4) is made of fireproof glass, and the cold curtain plate (5) is made of energy-saving glass.
5. The two-closed two-open cold curtain fire door and window system according to any one of claims 3 or 4, wherein: the joint piece (2) and the joint edge (13) are connected with the fireproof plate (4) and the cold curtain plate (5) in a clamped mode through glue.
6. The two-closed and two-open cold curtain fire door and window system of claim 5, wherein: be provided with rigidity cardboard (7) in the colloid between PLASTIC LAMINATED (4) and cold curtain board (5), joint spare (2) and joint limit (13) joint are in rigidity cardboard (7).
7. The two-closed and two-open cold curtain fire door and window system of claim 6, wherein: joint spare (2) are including interconnect's connecting plate (21) and joint board (22), connecting plate (21) are connected with steel frame (11) of corresponding side through the bolt, joint board (22) joint is in rigid cardboard (7).
8. The two-closed and two-open cold curtain fire door and window system of claim 7, wherein: the distance from the bolt on the connecting plate (21) to the cold curtain plate (5) is greater than the distance from the fireproof plate (4) to the cold curtain plate (5).
9. The two-closed and two-open cold curtain fire door and window system according to any one of claims 1 to 8, wherein: the pressing strips (3) are connected with the steel frames (11) on the corresponding sides through bolts.
10. The two-closed and two-open cold curtain fire door and window system of claim 9, wherein: and a covering edge (111) used for covering the corresponding pressing strip (3) is formed on the steel frame (11).
CN202011564985.2A 2020-12-25 2020-12-25 Two-closed two-open type cold curtain fireproof door and window system Pending CN112554727A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011564985.2A CN112554727A (en) 2020-12-25 2020-12-25 Two-closed two-open type cold curtain fireproof door and window system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011564985.2A CN112554727A (en) 2020-12-25 2020-12-25 Two-closed two-open type cold curtain fireproof door and window system

Publications (1)

Publication Number Publication Date
CN112554727A true CN112554727A (en) 2021-03-26

Family

ID=75034282

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011564985.2A Pending CN112554727A (en) 2020-12-25 2020-12-25 Two-closed two-open type cold curtain fireproof door and window system

Country Status (1)

Country Link
CN (1) CN112554727A (en)

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