CN109779491A - A kind of water spray fire resistant doorsets that can delay the intensity of a fire - Google Patents
A kind of water spray fire resistant doorsets that can delay the intensity of a fire Download PDFInfo
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- CN109779491A CN109779491A CN201910028142.1A CN201910028142A CN109779491A CN 109779491 A CN109779491 A CN 109779491A CN 201910028142 A CN201910028142 A CN 201910028142A CN 109779491 A CN109779491 A CN 109779491A
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Abstract
The present invention provides the water spray fire resistant doorsets that one kind can delay the intensity of a fire, including frame, rectangle bucket, bakelite plate, evaporation cavity, evaporate liquid, water pipe, water, evaporation box, tracheae, clump weight, sheet rubber, fixture block, washer, thin slice, venthole, spray head and protrusion, the bottom seamless welding of frame inner wall has rectangle bucket, the inner wall of rectangle bucket is bonded with two pieces of bakelite plates by structure glue, the inside of rectangle bucket is equipped with evaporation cavity, the side insertion of frame is welded with evaporation box, the top of evaporation box is seamless to be embedded with tracheae, evaporation liquid indefinite filled with shape in evaporation cavity and evaporation box, being embedded in for frame is provided with water pipe, the inside of the rectangle bucket water indefinite filled with shape, seamless sliding has clump weight between bakelite plate.Water 7 in the present invention in rectangle bucket 2, water 7 can quickly spray frame 1 by water pipe 6 and spray head 16 when frame 1 encounters fire, slow down the function of fire spreading significantly, strive for valuable time for people's escape.
Description
Technical field
The present invention relates to fire resistant doorsets technical fields, specifically, being related to a kind of water spray fire resistant doorsets.
Background technique
Fire resistant doorsets refer to is able to satisfy the door that fire stability, integrality and thermal insulation require within a certain period of time, it is to set
There are the fire protection separators of certain fire resistance in fire protection interval, emergency staircase, vertical shaft etc., fire resistant doorsets, which remove, to be had commonly
Outside the effect of door, has the function of preventing fire spreading and flue gas diffusion, the sprawling of the intensity of a fire can be prevented within a certain period of time, really
Protect evacuating personnel, the type of fire resistant doorsets has much at present, according to the material classification can be divided into fire-proof wooden door, fire resistance steel door,
Steel wood fire resistant doorsets, other fire resistant doorsets etc., this kind of fire resistant doorsets can only play the effect for preventing fire spreading, there is one in the prior art
The patent of piece Patent No. CN201310515402.0 provides a kind of novel water spray fire resistant doorsets that can be sprayed water, when temperature is big
When normal value, by open signal transmitting volume to warning device and inductive switch, warning device sounds an alarm controller, reminds people
Cause danger, inductive switch will stir baffle, and the water being filled with water in layer is sprayed out of hole for water spraying, when people from doorway flee when,
Water is sprayed into survivor, is played a protective role, if fire is greater for outside, can close fire resistant doorsets, hole for water spraying sprays water
It prevents extraneous fire spreading within doors, extends for person in distress and wait for rescue the time, but this kind of fire resistant doorsets pass through inductive switch etc.
Mutual cooperation electronic component is sprayed water to realize, when the intensity of a fire is excessive, there are electronic components can not be worked due to high temperature, with
And the coolant-temperature gage sprayed is higher by the heating temperature of open fire, if the water of ejection is sprayed on the person people that can scald escape,
And the problems such as water temperature heat absorption capacity decline, therefore, it is necessary to further be studied on the basis of fire resistant doorsets, providing one kind can
Delay the water spray fire resistant doorsets of the intensity of a fire.
Summary of the invention
A kind of water spray fire resistant doorsets setting that can delay the intensity of a fire, can to solve electronic component mentioned above in the background art
It can can not be worked due to high temperature, the coolant-temperature gage of ejection is higher by the heating temperature of open fire, if the water of ejection is sprayed at people
The people of escape can be scalded with it, and the problem of water temperature more highly endothermic ability decline.
The invention provides the following technical scheme: a kind of water spray fire resistant doorsets that can delay the intensity of a fire, including frame, rectangle water
Bucket, bakelite plate, evaporation cavity, evaporation liquid, water pipe, water, evaporation box, tracheae, clump weight, sheet rubber, fixture block, washer, thin slice, outlet
Hole, spray head and protrusion, the bottom seamless welding of the frame inner wall have rectangle bucket, and the inner wall of the rectangle bucket passes through structure
Gluing is connected to two pieces of bakelite plates, and the inside of the rectangle bucket is equipped with evaporation cavity, and the side insertion of the frame is welded with evaporation
Box, the top of the evaporation box is seamless to be embedded with tracheae, is filled with the indefinite evaporation of shape in the evaporation cavity and evaporation box
Liquid, being embedded in for the frame are provided with water pipe, the inside of the rectangle bucket water indefinite filled with shape, the bakelite plate
Between it is seamless sliding have clump weight, the bottom of the clump weight is bonded with sheet rubber, the bottom of the sheet rubber by structure glue
It is close on the water, the side activity of the rectangle bucket is embedded with fixture block, and fixture block is embedded in clump weight through bakelite plate, institute
The bottom for stating frame inner wall is bonded with washer, and the intermediate seamless sticky of the washer is connected to thin slice, and thin slice is tightly attached to water pipe one end,
Protrusion is equipped with inside the top of the fixture block and clump weight, the inner opening of the clump weight is provided with venthole, the frame
The other side insertion of frame is provided with spray head, and spray head and the mating setting of water pipe.
Further preferred embodiment: the protrusion is equidistantly evenly distributed on the contact surface of fixture block and clump weight, described convex
Rising is in " semiellipse " shape, and is mutually twisted between protrusion, and protrusion and the angle of horizontal plane are 10 ° -15 °.
Further preferred embodiment: 10 ° -15 ° of the top downward of the fixture block, the protrusion are in " cylinder " shape, and
Protrusion is mutually staggered with water pipe, and protrusion is located at before water pipe.
Further preferred embodiment: one end of the tracheae is mutually butted with venthole, and the side of venthole and fixture block
It matches.
Further preferred embodiment: the clump weight is in " cuboid " shape, and the height of clump weight is the four of rectangle bucket
/ mono-, and the density of clump weight is greater than 10kg/L.
Further preferred embodiment: the volume of the evaporation liquid is the one third of evaporation cavity volume, and, the steaming at another place
The volume of lotion is 2/3rds of evaporation box volume.
Further preferred embodiment: the evaporation box is located at the position of 5/7ths height of frame, and the outside of evaporation box
It is located on same vertical plane with frame facet.
Further preferred embodiment: the boiling point of the evaporation liquid is 45 DEG C -70 DEG C, and the specific heat capacity for evaporating liquid is less than
1000J/kg。
A kind of water spray fire resistant doorsets that can delay the intensity of a fire, have the advantages that
(1) this kind can delay the water spray fire resistant doorsets of the intensity of a fire to be provided with rectangle bucket 2, after frame 1 encounters open fire, evaporation
Evaporation liquid 5 in chamber 4 can evaporate, and make the air pressure rapid increase in evaporation cavity 4, and the air pressure at 10 top of clump weight increases to certain value
When, when the pressure of clump weight 10 is greater than the frictional force of fixture block 12 and clump weight 10, fixture block 12 will be to the outer sidesway of rectangle bucket 2
It is dynamic, make clump weight 10 that the water 7 in rectangle bucket 2 is squeezed out rectangle bucket 2, and since the air pressure of evaporation cavity 4 is very big, counterweight
The pressure of block 10 is also very big, so that water 7 is quickly sprayed frame 1 by water pipe 6 and spray head 16, it is climing to slow down the intensity of a fire significantly
The function of prolonging strives for valuable time for people's escape.
(2) bakelite plate 3 has good heat-insulating capability, and the temperature and rectangle bucket 2 of 5 steam of liquid will be evaporated in evaporation cavity 4
In water 7 temperature isolation, making water 7, the temperature remains within the normal range, the extinguishing effect of water 7 can either be increased, and can be avoided water 7 spray when
The people of the excessively high scald escape of temperature, thin slice 14 can be racked by water 7, rush in water 7 in a flash in water pipe 6, to increase the stream of water 7
Speed makes water 7 quickly spray frame 1, achievees the effect that quickly to slow down the intensity of a fire.
Detailed description of the invention
Fig. 1 is the whole structural section schematic diagram of the present invention.
Fig. 2 is the enlarged diagram in Fig. 1 of the present invention at A.
Fig. 3 is the enlarged diagram in Fig. 1 of the present invention at B.
Fig. 4 is the enlarged diagram in Fig. 1 of the present invention at C.
Fig. 5 is the enlarged diagram in Fig. 1 of the present invention at D.
Fig. 6 is the enlarged diagram in Fig. 5 of the present invention at E.
Fig. 7 is the status diagram that the present invention uses.
In Fig. 1-7: frame 1, rectangle bucket 2, bakelite plate 3, evaporation cavity 4, evaporation liquid 5, water pipe 6, water 7, evaporation box 8, gas
Pipe 9, clump weight 10, sheet rubber 11, fixture block 12, washer 13, thin slice 14, venthole 15, spray head 16, protrusion 17.
Specific embodiment
It please refers in Fig. 1 to 7, in the embodiment of the present invention, a kind of water spray fire resistant doorsets that can delay the intensity of a fire, including frame 1,
Rectangle bucket 2, bakelite plate 3, evaporation cavity 4, evaporation liquid 5, water pipe 6, water 7, evaporation box 8, tracheae 9, clump weight 10, sheet rubber 11,
Fixture block 12, washer 13, thin slice 14, venthole 15, spray head 16 and protrusion 17, the bottom seamless welding of 1 inner wall of frame has rectangle water
The inner wall of bucket 2, rectangle bucket 2 is bonded with two pieces of bakelite plates 3 by structure glue, and the inside of rectangle bucket 2 is equipped with evaporation cavity 4, frame
The side insertion of frame 1 is welded with evaporation box 8, and the top of evaporation box 8 is seamless to be embedded with tracheae 9, in evaporation cavity 4 and evaporation box 8
Filled with the evaporation liquid 5 that shape is indefinite, being embedded in for frame 1 is provided with water pipe 6, and the inside of rectangle bucket 2 is filled with shape not
Fixed water 7, seamless sliding has clump weight 10 between bakelite plate 3, and bakelite plate 3 has good heat-insulating capability, will steam in evaporation cavity 4
The temperature of 5 steam of lotion and the temperature of the water 7 in rectangle bucket 2 completely cut off, and making water 7, the temperature remains within the normal range, can either increase going out for water 7
Fiery effect, and can be avoided the people of the excessively high scald escape of temperature when water 7 sprays, the bottom of clump weight 10 passes through structure glue sticking
There is sheet rubber 11, the bottom of sheet rubber 11 is tightly attached on water 7, and the side activity of rectangle bucket 2 is embedded with fixture block 12, and fixture block
12 are embedded in clump weight 10 through bakelite plate 3, and the bottom of 1 inner wall of frame is bonded with washer 13, the intermediate seamless sticky of washer 13
It is connected to thin slice 14, and thin slice 14 is tightly attached to 6 one end of water pipe, thin slice 14 can obstruct water 7 and enter in water pipe 6, when clump weight 10 squeezes
When pressing water 7, thin slice 14 can be racked by water 7, rush in water 7 in a flash in water pipe 6, and the top and 10 inside of clump weight of fixture block 12 are
Equipped with protrusion 17, the inner opening of clump weight 10 is provided with venthole 15, and the other side insertion of frame 1 is provided with spray head 16, and
Spray head 16 and the mating setting of water pipe 6.
Wherein, protrusion 17 is equidistantly evenly distributed on the contact surface of fixture block 12 and clump weight 10, and protrusion 17 is in " semiellipse "
Shape, and be mutually twisted between protrusion 17, protrusion 17 can greatly increase the contact area of fixture block 12 and clump weight 10, make fixture block 12
It is bigger with 10 frictional force of clump weight, it blocks fixture block 12 by clump weight 10 well, avoids frame 1 during switch gate, match
Pouring weight 10 is fallen down due to the vibration in gravity and switching process, and protrusion 17 and the angle of horizontal plane are 10 °, are made convex
17 and 12 keeping parallelism of fixture block are played, it is big to play the role of increase frictional force well.
Wherein, 10 ° of the top downward of fixture block 12 can convert the pressure a part of clump weight 10 to fixture block 12
It is, fixture block 12 to the power moved on the outside of rectangle bucket 2, can be avoided that fixture block 12 is stuck by clump weight 10, and protrusion 17 is in " cylinder "
Shape, and protrusion 17 is mutually staggered with water pipe 6, and protrusion 17 is located at before water pipe 6, fixture block 12 is used to block clump weight 10,
After frame 1 encounters open fire, the evaporation liquid 5 in evaporation cavity 4 can evaporate, and make the air pressure rapid increase in evaporation cavity 4, clump weight 10
When the air pressure at top increases to certain value, when the pressure of clump weight 10 is greater than the frictional force of fixture block 12 and clump weight 10, fixture block 12
It will make clump weight 10 that the water 7 in rectangle bucket 2 is squeezed out rectangle bucket 2, and due to steaming to moving on the outside of rectangle bucket 2
The air pressure for sending out chamber 4 is very big, and the pressure of clump weight 10 is also very big, and water 7 is enable quickly to spray by water pipe 6 and spray head 16
Frame 1 slows down the function of fire spreading significantly, strives for valuable time for people's escape.
Wherein, one end of tracheae 9 is mutually butted with venthole 15, and the side of venthole 15 matches with fixture block 12, gas
Pipe 9 can be identical as venthole 15 by the air pressure in evaporation box 8, and when frame 1 encounters fire, the temperature in evaporation box 8 rises, and steams
5 explosive evaporation of lotion makes the air pressure rapid increase in tracheae 9 and venthole 15, when air pressure reaches certain value, evaporation liquid 5
Steam will push fixture block 12 to the movement of the outside of rectangle bucket 2, is released the pressure at 12 top of clump weight, quickly will
Water 7 sprays in frame 1, can be good at slowing down the intensity of a fire.
Wherein, clump weight 10 is in " cuboid " shape, and the height of clump weight 10 is a quarter of rectangle bucket 2, and
The density of clump weight 10 is greater than 10kg/L, and 10 density large volume of clump weight is big, can guarantee that 10 gravity of clump weight is enough big, to make
The pressure that water 7 is subject to is lived enough big.
Wherein, evaporation box 8 is located at the position of 5/1sts seven height of frame, and the side in the outside of evaporation box 8 and frame 1
On same vertical plane, the volume of evaporation liquid 5 is the one third of 4 volume of evaporation cavity, is stayed in evaporation cavity 4 to evaporation liquid 5
There are enough spaces, makes to evaporate the quickly evaporation of liquid 5, evaporation liquid 5 quickly evaporates in evaporation cavity 4, and, the evaporation at another place
The volume of liquid 5 is 2/3rds of 8 volume of evaporation box, and evaporating liquid 5, there are firmly enough spaces in evaporation box 8, and evaporation liquid 5 is made to exist
It is quickly evaporated in evaporation box 8.
Wherein, the boiling point for evaporating liquid 5 is 50 DEG C, and boiling point, which is higher than room temperature, evaporate evaporation liquid 5 will not at summer, and boiling
The not high enough boiling that can be conducive to evaporate liquid 5 of point, and the specific heat capacity for evaporating liquid 5 is less than 1000J/kg, specific heat capacity is small to be increased
Adding the evaporation evaporation of liquid 5 is rate, makes to evaporate the air pressure rapid increase in 5 fast framework 1 of liquid, reduces the time for spraying water 7, faster
Speed controls the intensity of a fire.
The water spray fire resistant doorsets provided in this embodiment that can delay the intensity of a fire can be good at slowing down the intensity of a fire, spray water quick etc.
Advantage.
When the water spray fire resistant doorsets of the intensity of a fire can be delayed using one kind of the present invention, firstly, being steamed after frame 1 encounters open fire
The temperature meeting rapid increase in box 8 and evaporation cavity 4 is sent out, the evaporation liquid 5 in evaporation box 8 and evaporation cavity 4 can quickly evaporate, make
Air pressure rapid increase in evaporation cavity 4, tracheae 9 and venthole 15, clump weight 10 are blocked by fixture block 12, the pressure at 10 top of clump weight
Power is more and more, since fixture block 12 is tilted a certain angle, so a part of 10 pressure of clump weight can be converted to fixture block 12 to square
The thrust moved on the outside of shape bucket 2, while when the air pressure in venthole 15 rises to certain value, the evaporation in venthole 15
When the pressure of the steam of liquid 5 is greater than the frictional force of fixture block 12 and clump weight 10, fixture block 12 will to moving on the outside of rectangle bucket 2,
Make clump weight 10 that the water 7 in rectangle bucket 2 is squeezed out rectangle bucket 2, and water 7 can break through thin slice 14 simultaneously for 10 top of clump weight
The pressure of evaporation 5 steam of liquid discharges in a flash, and water 7 is enable quickly to spray frame 1, thin slice 14 by water pipe 6 and spray head 16
Water 7 can be completely cut off outside water pipe 6,10 water of compaction of clump weight, 7 water 7 enters in water pipe 6, absorbs water 7 in evaporation cavity 4 and evaporates liquid
The heat of 5 steam, to make water 7, the temperature remains within the normal range, and bakelite plate 3 is capable of the temperature of exclusion of water 7, avoids the heat of evaporation 5 steam of liquid
It is absorbed by the water 7 in rectangle bucket 2.
Claims (8)
1. one kind can delay the water spray fire resistant doorsets of the intensity of a fire, including frame (1), rectangle bucket (2), bakelite plate (3), evaporation cavity
(4), evaporate liquid (5), water pipe (6), water (7), evaporation box (8), tracheae (9), clump weight (10), sheet rubber (11), fixture block (12),
Washer (13), thin slice (14), venthole (15), spray head (16) and protrusion (17), it is characterised in that: frame (1) inner wall
Bottom seamless welding has rectangle bucket (2), and the inner wall of the rectangle bucket (2) is bonded with two pieces of bakelite plates (3) by structure glue,
The inside of the rectangle bucket (2) is equipped with evaporation cavity (4), and the side insertion of the frame (1) is welded with evaporation box (8), described
The top of evaporation box (8) is seamless to be embedded with tracheae (9), indefinite filled with shape in the evaporation cavity (4) and evaporation box (8)
It evaporates liquid (5), being embedded in for the frame (1) is provided with water pipe (6), and the inside of the rectangle bucket (2) is filled with shape not
Fixed water (7), seamless sliding has clump weight (10) between the bakelite plate (3), and the bottom of the clump weight (10) passes through structure
Gluing is connected to sheet rubber (11), and the bottom of the sheet rubber (11) is tightly attached on water (7), and the side of the rectangle bucket (2) is living
It is dynamic to be embedded with fixture block (12), and fixture block (12) is embedded in clump weight (10) through bakelite plate (3), frame (1) inner wall
Bottom is bonded with washer (13), and the intermediate seamless sticky of the washer (13) is connected to thin slice (14), and thin slice (14) is tightly attached to water pipe
(6) raised (17), the inside of the clump weight (10) are equipped with inside one end, the top of the fixture block (12) and clump weight (10)
Opening is provided with venthole (15), and the other side insertion of the frame (1) is provided with spray head (16), and spray head (16) and water pipe
(6) mating setting.
2. the water spray fire resistant doorsets according to claim 1 that the intensity of a fire can be delayed, it is characterised in that: the protrusion (17) is equidistant
It is evenly distributed on the contact surface of fixture block (12) and clump weight (10), the protrusion (17) is in " semiellipse " shape, and raised (17)
Between be mutually twisted, and the angle of raised (17) and horizontal plane is 10 ° -15 °.
3. the water spray fire resistant doorsets according to claim 1 that the intensity of a fire can be delayed, it is characterised in that: the top of the fixture block (12)
Portion tilts down 10 ° -15 °, and the protrusion (17) is in " cylinder " shape, and raised (17) are mutually staggered with water pipe (6), and protrusion
(17) it is located at before water pipe (6).
4. the water spray fire resistant doorsets according to claim 1 that the intensity of a fire can be delayed, it is characterised in that: the one of the tracheae (9)
End is mutually butted with venthole (15), and the side of venthole (15) matches with fixture block (12).
5. the water spray fire resistant doorsets according to claim 1 that the intensity of a fire can be delayed, it is characterised in that: the clump weight (10) is in
" cuboid " shape, and the height of clump weight (10) is a quarter of rectangle bucket (2), and the density of clump weight (10) is greater than
10kg/L。
6. the water spray fire resistant doorsets according to claim 1 that the intensity of a fire can be delayed, it is characterised in that: evaporation liquid (5)
Volume is the one third of evaporation cavity (4) volume, and, the volume of the evaporation liquid (5) at another place is three points of evaporation box (8) volume
Two.
7. the water spray fire resistant doorsets according to claim 1 that the intensity of a fire can be delayed, it is characterised in that: evaporation box (8) position
In the position of (1) 5/7ths height of frame, and the side of the outside of evaporation box (8) and frame (1) is located on same vertical plane.
8. the water spray fire resistant doorsets according to claim 1 that the intensity of a fire can be delayed, it is characterised in that: evaporation liquid (5)
Boiling point is 45 DEG C -70 DEG C, and the specific heat capacity for evaporating liquid (5) is less than 1000J/kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910028142.1A CN109779491B (en) | 2019-01-11 | 2019-01-11 | Can delay fire behavior's water spray fire door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910028142.1A CN109779491B (en) | 2019-01-11 | 2019-01-11 | Can delay fire behavior's water spray fire door |
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| Publication Number | Publication Date |
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| CN109779491A true CN109779491A (en) | 2019-05-21 |
| CN109779491B CN109779491B (en) | 2020-06-30 |
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ID=66500308
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| CN201910028142.1A Active CN109779491B (en) | 2019-01-11 | 2019-01-11 | Can delay fire behavior's water spray fire door |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111075085A (en) * | 2019-12-27 | 2020-04-28 | 甬港现代工程有限公司 | Roof heat insulation structure |
| CN111088857A (en) * | 2019-12-27 | 2020-05-01 | 甬港现代工程有限公司 | Fire-proof partition board |
| CN111101631A (en) * | 2019-12-27 | 2020-05-05 | 甬港现代工程有限公司 | Building roof temperature control device |
| CN111101613A (en) * | 2019-12-27 | 2020-05-05 | 甬港现代工程有限公司 | Fireproof partition wall structure |
| CN111472661A (en) * | 2020-04-17 | 2020-07-31 | 安徽乐青琴贸易有限公司 | Double-door-leaf security door |
| CN111729232A (en) * | 2020-07-07 | 2020-10-02 | 王恩光 | Directional fire extinguishing system for fire sprinkler head |
| CN111963029A (en) * | 2020-08-21 | 2020-11-20 | 周倩倩 | Fireproof door plate with cooling and heat insulation functions |
| CN112302515A (en) * | 2020-10-19 | 2021-02-02 | 黄首明 | Burglary-resisting window with conflagration function of fleing |
| CN112360314A (en) * | 2020-10-28 | 2021-02-12 | 浙江振元安防科技有限公司 | High-efficient fire-retardant fire door that separates cigarette |
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| CN114809473A (en) * | 2022-04-06 | 2022-07-29 | 青岛诚通建筑工程有限公司 | Roof concrete protective layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111101631B (en) * | 2019-12-27 | 2022-01-04 | 甬港现代工程有限公司 | Building roof temperature control device |
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| CN111963029A (en) * | 2020-08-21 | 2020-11-20 | 周倩倩 | Fireproof door plate with cooling and heat insulation functions |
| CN112302515A (en) * | 2020-10-19 | 2021-02-02 | 黄首明 | Burglary-resisting window with conflagration function of fleing |
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| CN112360314A (en) * | 2020-10-28 | 2021-02-12 | 浙江振元安防科技有限公司 | High-efficient fire-retardant fire door that separates cigarette |
| CN112412285B (en) * | 2020-10-28 | 2022-04-29 | 浙江齐嘉消防科技有限公司 | Smoke-isolating purifying fireproof door |
| CN112412285A (en) * | 2020-10-28 | 2021-02-26 | 浙江齐嘉消防科技有限公司 | Smoke-isolating purifying fireproof door |
| CN114809473A (en) * | 2022-04-06 | 2022-07-29 | 青岛诚通建筑工程有限公司 | Roof concrete protective layer |
| CN114809473B (en) * | 2022-04-06 | 2023-12-05 | 青岛诚通建筑工程有限公司 | Roof concrete protective layer |
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| CN109779491B (en) | 2020-06-30 |
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Address after: 321400 No.2 Bixi Road, Xinbi street, Jinyun County, Lishui City, Zhejiang Province Patentee after: Zhejiang Hubble Industrial Co.,Ltd. Patentee after: Zhejiang Yijia Industry Co., Ltd Address before: 321200 southeast Industrial Zone (LENGSHUIKENG), Shuxi street, Wuyi County, Jinhua City, Zhejiang Province (within Zhejiang Shimei Metal Manufacturing Co., Ltd.) Patentee before: WUYI HABO INDUSTRY & TRADE Co.,Ltd. Patentee before: Zhejiang Yijia Industry Co., Ltd |