CN107489794A - A kind of oil-smoke-exhausting fireproof check valve - Google Patents
A kind of oil-smoke-exhausting fireproof check valve Download PDFInfo
- Publication number
- CN107489794A CN107489794A CN201710879698.2A CN201710879698A CN107489794A CN 107489794 A CN107489794 A CN 107489794A CN 201710879698 A CN201710879698 A CN 201710879698A CN 107489794 A CN107489794 A CN 107489794A
- Authority
- CN
- China
- Prior art keywords
- depression bar
- temperature
- sensing element
- smoke
- outer cover
- 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.)
- Granted
Links
- 239000000779 smoke Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 4
- 239000006233 lamp black Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
- F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/383—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the valve comprising fusible, softening or meltable elements, e.g. used as link, blocking element, seal, closure plug
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/386—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the closure members being rotatable or pivoting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2078—Removing cooking fumes movable
- F24C15/2092—Removing cooking fumes movable extendable or pivotable
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fire-Detection Mechanisms (AREA)
- Check Valves (AREA)
Abstract
A kind of oil-smoke-exhausting fireproof check valve, including base, valve body, outer cover and valve block, depression bar is installed inside outer cover, depression bar includes the first depression bar and the second depression bar, first depression bar first end is provided with the first elastic component, second depression bar first end is provided with the second elastic component, the temperature-sensing element that temperature-sensing element fixed seat is also equipped with inside outer cover and can be fused when reaching design temperature, in the state of temperature-sensing element is unblown, first the second end of depression bar and second the second end of depression bar it is spacing on temperature-sensing element and with valve block be separated, in the state of temperature-sensing element fusing, first depression bar and the second depression bar are rotated down in the presence of the first elastic component and the second elastic component and are pressed on jointly on the lateral surface of valve block respectively.The depression bar of the oil-smoke-exhausting fireproof check valve can be shortened the length of depression bar actuation arm, increase torque, be touched so as to be wiped when avoiding depression bar from acting with valve block edge using double depression bars, and the active force that double depression bars are applied on valve block is bigger, evenly, and closing is more firm.
Description
Technical field
The present invention relates to a kind of fire resisting damper, more particularly, to a kind of oil-smoke-exhausting fireproof check valve.
Background technology
In the kitchen using the public gas flue in longitudinal direction, in order to prevent the oil smoke in gas flue from blowing back into kitchen, taking out
The device as check valve for flue is both provided between the outlet mouth of pipe of lampblack absorber and public gas flue.Existing flue is non-return
Valve generally comprises the oil smoke passage being made up of shell, and the oil smoke passage has relative air inlet and air outlet, connects on air inlet
The outlet mouth of pipe of smoke exhaust ventilator is connect, air outlet is extend into public gas flue, is provided with oil smoke passage air outlet able to turn on or off
Valve block, valve block by horizontally disposed valve block axis of rotation be arranged on oil smoke passage inwall on.When without using lampblack absorber,
Because self gravitation is in the closed position, valve block covers in air-out oral area valve block；When using lampblack absorber, valve block is in open position
Put, valve block is away from air outlet.Due to the public public gas flue in a longitudinal direction of more users, once fire occurs for single household, greatly
The high-temperature harmful gas of amount is poured in the public gas flue in longitudinal direction, now if the valve block closed not in time in check valve for flue, this
A little substantial amounts of high-temperature harmful gas can be entered by the oil smoke passage of check valve for flue to be used in the user family of lampblack absorber, from
And threaten the life security of resident family.
As disclosed in Application No. 201510675514.1 (application publication number is the A of CN 105240582)《A kind of oil smoke
Machine fire-proof valve for flue》, the positive closing bar of the fire-proof valve for flue is spacing by deformation piece in the case where deforming piece undeformed state
On two supports, released after deformation piece temperature distortion and the spacing of positive closing bar, positive closing bar are made in the presence of elastic component
For valve block of preventing fires, make the positive closing of fire prevention valve block and play the effect of isolation fire.Although the fire-proof valve structure is simple,
Due to piece positive closing bar of use of the fire resisting damper, following defect still be present：1st, when needing to close valve by fire resisting damper
The influence of angle when piece is opened, positive closing bar, which is possible to wipe, encounters valve block edge, so as to cause fire-protection valve can not
Close；2nd, because single positive closing bar makees that the arm of force is long, and the large percentage of support arm, thus close prevent fires valve block when
The strength acted on valve block is smaller, causes valve block to close defective tightness, does not have iris action.It is in addition, existing using single
The fire resisting damper of root depression bar (depression bar is the positive closing bar in above-mentioned patent document) structure, control depression bar action it is general have by
Release depression bar is realized in a piece of bimetal leaf (150 degree of operating temperature) temperature distortion, due to characteristic (two thermal changes of bimetal leaf
The different sheet metal of shape coefficient is combined with each other) it is to fix a Direction distortion, and depression bar is limited in bimetal leaf
Side, thus on depression bar plus prestressing force all turn to have added to bimetal leaf, but the deformation direction of bimetal leaf and depression bar is dynamic
Make direction into an angle of 90 degrees, cause that when temperature reaches setting value depression bar can not be discharged, fire-protection valve is not closed smoothly.
The content of the invention
The technical problems to be solved by the invention are to be directed to above-mentioned state of the art, there is provided one kind is avoided that depression bar acts
When collided with valve block edge and close more rapid, firm oil-smoke-exhausting fireproof check valve.
Technical scheme is used by the present invention solves above-mentioned technical problem：The oil-smoke-exhausting fireproof check valve, including bottom
Seat, valve body, outer cover and valve block, the floor installation are arranged on inside outer cover in the outside of the outer cover, the valve body, the valve
Piece is rotationally connected on the valve body, and depression bar is provided with inside outer cover, it is characterised in that：The depression bar includes the first depression bar
With the second depression bar, the first end of first depression bar, which is provided with, to be had the first depression bar to rotate down trend and close the of valve block
One elastic component, the first end of second depression bar be provided with make the second depression bar have rotate down trend and close the second of valve block
Elastic component, temperature-sensing element fixed seat is also equipped with the inside of the outer cover, is provided with and reaches in the temperature-sensing element fixed seat
The temperature-sensing element that can be fused during design temperature, in the state of temperature-sensing element is unblown, the second end of first depression bar and
Second end of two depression bars is spacing to be separated on described temperature-sensing element and with the valve block, in temperature-sensing element because temperature raises
And in the state of fusing, first depression bar and the second depression bar are downward in the presence of the first elastic component and the second elastic component respectively
Rotate and be pressed on jointly on the lateral surface of the valve block.
Can be with a variety of position limiting structures between depression bar and temperature-sensing element, it is preferable that preferably, the temperature-sensing element in opening to
On U-shape structure, first depression bar and the second depression bar are spacing in the U-shape structure, and the second end of the first depression bar and second
Cross described temperature-sensing element in second end of depression bar.
Temperature-sensing element fixed seat can have multiple installation sites, it is preferable that the temperature-sensing element fixed seat is arranged on described
The top of outer cover inwall.
Further preferably, the temperature-sensing element fixed seat is arranged on centered position at the top of the outer cover inwall.
First elastic component and the second elastic component can have various structures, it is preferable that be provided with the valve body lateral surface
First support and second support, the first end of first depression bar are arranged in first support, and first elastic component is installation
The first torsion spring between first support and the first depression bar, the first end installation of second depression bar are on the secondary support bracket, described
First elastic component is the second torsion spring between second support and the second depression bar.
Further preferably, the first support and second support are arranged on the valve body top and are located at the valve block respectively
Both sides.
In order that the active force of the first depression bar and the second depression bar is more uniformly distributed, first depression bar and the second depression bar are with valve body
Vertical middle separated time be symmetrical arranged for symmetry axis.
Further preferably, the outer cover includes housing body and smoke pipe connecting portion, and the floor installation is in the outer cover sheet
On body, junction button spring is installed on base, is provided with the outer wall of the housing body and is used to interlock with the junction button spring
Projection.
There can be a variety of rotation connection structures between valve block and valve body, it is preferable that installed on the lateral surface of the valve body
There is hinge seat, connecting pin is installed on hinge seat, hinge is installed on the connecting pin, the top of the valve block is arranged on
On the hinge.
Compared with prior art, the advantage of the invention is that：The depression bar of the oil-smoke-exhausting fireproof check valve uses double depression bars,
The length of depression bar actuation arm can be shortened, increase torque, touched so as to be wiped when avoiding depression bar from acting with valve block edge, and double depression bars are applied
It is bigger, evenly to be added in active force on valve block, valve block close it is even closer, firm, in addition, the temperature-sensing element peace of the check-valves
Mounted in the opposite end of the first depression bar and the second depression bar, when temperature-sensing element fuses, the first depression bar and second can be thoroughly discharged rapidly
Depression bar, so as to which valve block more be rapidly closed, use is more reliable.
Brief description of the drawings
Fig. 1 is structural representation of the embodiment of the present invention when temperature-sensing element is unblown；
Fig. 2 is structural representation of the embodiment of the present invention when temperature-sensing element fuses；
Fig. 3 is that the embodiment of the present invention removes the structural representation after base and outer cover；
Fig. 4 is the perspective exploded view of the embodiment of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in Figures 1 to 4, the oil-smoke-exhausting fireproof check valve in the present embodiment includes base 1, valve body 2, outer cover 3, valve
Piece 4, the first depression bar 51, the second depression bar 52, temperature-sensing element fixed seat 6, temperature-sensing element 7, first support 81, second support 82,
The critical pieces such as one torsion spring 91, the second torsion spring 92, junction button spring 10, hinge seat 11, connecting pin 12, hinge 13.
Wherein, base 1 is arranged on the outside of outer cover 3, and specifically, outer cover 3 includes housing body 31 and smoke pipe connecting portion 32,
Base 1 is arranged on housing body 31, and junction button spring 10 is provided with base 1, is provided with and is used on the outer wall of housing body 31
In the projection 33 to be interlocked with junction button spring 10.
Valve body 2 is arranged on inside outer cover 3, and valve block 4 is rotationally connected on valve body 2.The rotational structure of valve block 4 is as follows：
Hinge seat 11 is installed on the lateral surface of valve body 2, connecting pin 12 is installed on hinge seat 11, is installed on connecting pin 12 hinged
Chain 13, the top of valve block 4 are arranged on hinge 13.
First support 81 and second support 82 are arranged on the lateral surface of valve body 2, and the first end of the first depression bar 51 is arranged on
In first support 81, the first torsion spring 91 is arranged between the depression bar 51 of first support 81 and first, and the first torsion spring 91 forms the first pressure
Bar, which has, to be rotated down trend and closes the first elastic component of valve block 4.The first end of second depression bar 52 is arranged on second support 82
On, the second torsion spring 92 be arranged on the depression bar 52 of second support 82 and second between, the second torsion spring 92 form the second depression bar 52 have to
Lower rotation trend and close the second elastic component of valve block 4.
First support 81 and second support 82 are symmetrical arranged, and the first depression bar 51 and the second depression bar 52 are symmetrical arranged.Specifically,
First support 81 and second support 82 are arranged on the top of valve body 2 and are located at the both sides of valve block 4 respectively；First depression bar 51 and the second pressure
Bar 52 is symmetrical arranged using the vertical middle separated time of valve body 2 as symmetry axis, so, can make the first depression bar 51 and the second depression bar 52 to valve
The active force of piece 4 is more uniformly distributed.
Temperature-sensing element fixed seat 6 is arranged on centered position and close hinge seat 11 at the top of the inwall of outer cover 3, in temperature-sensing element
Temperature-sensing element 7 is welded with fixed seat 6, temperature-sensing element 7 is in the U-shape structure of opening upwards, the first depression bar 51 and the second depression bar 52
It is spacing in the U-shape structure, also, as shown in figure 3, the second end of the first depression bar 51 and the second end of the second depression bar 52 are crossed
Temperature-sensing element 7.
When not occurring the abnormal conditions such as fire, flue temperature is relatively low, and temperature-sensing element 7 will not fuse, the first depression bar
51 the second end and the second depression bar 52 are spacing on temperature-sensing element 7, now, the first depression bar 51 and the second depression bar 52 and valve block 4
It is separated without acting power to valve block 4, so that valve block 4 can be by smooth opening in the presence of flue gas stream.When
When there are the abnormal conditions such as fire, flue temperature is higher, and when flue temperature reaches the fusing point of temperature-sensing element 7, temperature-sensing element 7 is sent out
Raw fusing, so as to release the constraint to the first depression bar 51 and the second depression bar 52 so that the first depression bar 51 and the second depression bar 52 are distinguished
Rotated down in the presence of the first torsion spring 91 and the second torsion spring 92, and compress valve block 4 jointly and make valve block 4 can not be by flue gas
Stream is opened, and plays a part of obstructing flue gas.Because the check-valves is using double pressure rod structures, therefore, can make to be applied on valve block 4
Active force it is bigger, evenly, valve block 4 is closed even closer, firm.
It the foregoing is only the preferred embodiment of the present invention, it is noted that for those of ordinary skills,
Under the premise of the principle of the present invention is not departed from, a variety of remodeling or improvement can be carried out to the present invention, these are regarded as the present invention
Protection domain within.
Claims (9)
1. a kind of oil-smoke-exhausting fireproof check valve, including base (1), valve body (2), outer cover (3) and valve block (4), the base (1)
Installed in the outside of the outer cover (3), the valve body (2) is arranged on outer cover (3) inside, and the valve block (4) is rotationally connected to
On the valve body (2), depression bar is installed inside outer cover (3), it is characterised in that：The depression bar includes the first depression bar (51) and the
Two depression bars (52), the first end of first depression bar (51) be provided with make the first depression bar have rotate down trend and close valve block
(4) the first elastic component, the first end of second depression bar (52) be provided with make the second depression bar have rotate down trend and close
Second elastic component of valve closing piece (4), temperature-sensing element fixed seat (6) is also equipped with the inside of the outer cover (3), in temperature-sensitive member
The temperature-sensing element (7) that can be fused when reaching design temperature is installed, in the unblown shape of temperature-sensing element (7) in part fixed seat (6)
Under state, the second end of first depression bar (51) and the second end of the second depression bar (52) are spacing in described temperature-sensing element (7)
Above and with the valve block (4) it is separated, in the state of temperature-sensing element (7) fuses because of temperature rise, first depression bar
(51) rotated down respectively in the presence of the first elastic component and the second elastic component with the second depression bar (52) and be pressed on institute jointly
On the lateral surface for stating valve block (4).
2. oil-smoke-exhausting fireproof check valve according to claim 1, it is characterised in that：The temperature-sensing element (7) is in opening
Upward U-shape structure, first depression bar (51) and the second depression bar (52) are spacing in the U-shape structure, and the first depression bar (51)
The second end and the second end of the second depression bar (52) cross described temperature-sensing element (7).
3. oil-smoke-exhausting fireproof check valve according to claim 1, it is characterised in that：The temperature-sensing element fixed seat (6)
Installed in the top of the outer cover (3) inwall.
4. oil-smoke-exhausting fireproof check valve according to claim 3, it is characterised in that：The temperature-sensing element fixed seat (6)
Installed in centered position at the top of the outer cover (3) inwall.
5. oil-smoke-exhausting fireproof check valve according to claim 1, it is characterised in that：On the valve body (2) lateral surface
First support (81) and second support (82) are installed, the first end of first depression bar (51) is arranged on first support (81)
On, first elastic component is the first torsion spring (91) between first support (81) and the first depression bar (51), described the
The first end of two depression bars (52) is arranged in second support (82), and first elastic component is installed in second support (82) and the
The second torsion spring (92) between two depression bars (52).
6. oil-smoke-exhausting fireproof check valve according to claim 5, it is characterised in that：The first support (81) and second
Support (82) is arranged on the valve body (2) top and is located at the both sides of the valve block (4) respectively.
7. oil-smoke-exhausting fireproof check valve according to claim 6, it is characterised in that：First depression bar (51) and second
Depression bar (52) is symmetrical arranged using the vertical middle separated time of valve body (2) as symmetry axis.
8. oil-smoke-exhausting fireproof check valve according to claim 1, it is characterised in that：The outer cover (3) includes outer cover sheet
Body (31) and smoke pipe connecting portion (32), the base (1) are arranged on the housing body (31), are provided with base (1)
Junction button spring (10), the projection for being used for interlocking with the junction button spring (10) is provided with the outer wall of the housing body (31)
(33)。
9. the oil-smoke-exhausting fireproof check valve according to any claim in claim 1 to 8, it is characterised in that：Institute
State and hinge seat (11) is installed on the lateral surface of valve body (2), connecting pin (12) is installed on hinge seat (11), in the connection
Hinge (13) is installed, the top of the valve block (4) is arranged on the hinge (13) on pin (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710879698.2A CN107489794B (en) | 2017-09-26 | 2017-09-26 | Fire-proof check valve for discharging fume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710879698.2A CN107489794B (en) | 2017-09-26 | 2017-09-26 | Fire-proof check valve for discharging fume |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489794A true CN107489794A (en) | 2017-12-19 |
| CN107489794B CN107489794B (en) | 2024-04-12 |
Family
ID=60652214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710879698.2A Active CN107489794B (en) | 2017-09-26 | 2017-09-26 | Fire-proof check valve for discharging fume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107489794B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488445A (en) * | 2018-06-26 | 2018-09-04 | 盐城市百世达建材有限公司 | A kind of fire-preventing check valve |
| CN109027272A (en) * | 2018-10-31 | 2018-12-18 | 廊坊金盾华通科技有限公司 | A kind of fire-preventing check valve |
| CN109185520A (en) * | 2018-11-06 | 2019-01-11 | 陈开兵 | A kind of fireproof check valve for combined flue |
| CN110440036A (en) * | 2019-07-19 | 2019-11-12 | 广州市法玉环保科技有限公司 | A kind of fire-preventing check valve |
| CN110553072A (en) * | 2018-06-04 | 2019-12-10 | 宁波方太厨具有限公司 | Fire-proof valve for range hood |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE32362E (en) * | 1977-05-02 | 1987-02-24 | Prefco Products, Inc. | Fire damper and method of fabrication |
| JPH11257528A (en) * | 1998-03-12 | 1999-09-21 | Inax Corp | Control mechanism for hot and cold water combination device |
| CN2729460Y (en) * | 2004-08-17 | 2005-09-28 | 杭兆全 | Check-valve for discharging oil fume and fire-proof |
| CN201306479Y (en) * | 2008-12-12 | 2009-09-09 | 张晓强 | Fire-proof check valve |
| CN201487315U (en) * | 2009-09-04 | 2010-05-26 | 张晓强 | Fireproof check valve with ejector |
| CN201610961U (en) * | 2010-02-04 | 2010-10-20 | 闫斐 | Variable-pressure type oil-smoke exhausting fireproof check valve |
| CN201973302U (en) * | 2010-11-09 | 2011-09-14 | 周繁盈 | Fire-proof check valve |
| CN103851233A (en) * | 2014-02-21 | 2014-06-11 | 武汉圣禹排水系统有限公司 | Round rotating closure flap valve |
| CN104819324A (en) * | 2015-04-27 | 2015-08-05 | 宁波方太厨具有限公司 | Range hood fire valve |
| CN105240582A (en) * | 2015-10-16 | 2016-01-13 | 宁波方太厨具有限公司 | Flue fire damper for range hood |
| CN106594333A (en) * | 2017-02-13 | 2017-04-26 | 秦浩程 | Zero-resistance flue check valve |
| CN207268320U (en) * | 2017-09-26 | 2018-04-24 | 姚世杰 | A kind of oil-smoke-exhausting fireproof check valve |
-
2017
- 2017-09-26 CN CN201710879698.2A patent/CN107489794B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE32362E (en) * | 1977-05-02 | 1987-02-24 | Prefco Products, Inc. | Fire damper and method of fabrication |
| JPH11257528A (en) * | 1998-03-12 | 1999-09-21 | Inax Corp | Control mechanism for hot and cold water combination device |
| CN2729460Y (en) * | 2004-08-17 | 2005-09-28 | 杭兆全 | Check-valve for discharging oil fume and fire-proof |
| CN201306479Y (en) * | 2008-12-12 | 2009-09-09 | 张晓强 | Fire-proof check valve |
| CN201487315U (en) * | 2009-09-04 | 2010-05-26 | 张晓强 | Fireproof check valve with ejector |
| CN201610961U (en) * | 2010-02-04 | 2010-10-20 | 闫斐 | Variable-pressure type oil-smoke exhausting fireproof check valve |
| CN201973302U (en) * | 2010-11-09 | 2011-09-14 | 周繁盈 | Fire-proof check valve |
| CN103851233A (en) * | 2014-02-21 | 2014-06-11 | 武汉圣禹排水系统有限公司 | Round rotating closure flap valve |
| CN104819324A (en) * | 2015-04-27 | 2015-08-05 | 宁波方太厨具有限公司 | Range hood fire valve |
| CN105240582A (en) * | 2015-10-16 | 2016-01-13 | 宁波方太厨具有限公司 | Flue fire damper for range hood |
| CN106594333A (en) * | 2017-02-13 | 2017-04-26 | 秦浩程 | Zero-resistance flue check valve |
| CN207268320U (en) * | 2017-09-26 | 2018-04-24 | 姚世杰 | A kind of oil-smoke-exhausting fireproof check valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553072A (en) * | 2018-06-04 | 2019-12-10 | 宁波方太厨具有限公司 | Fire-proof valve for range hood |
| CN110553072B (en) * | 2018-06-04 | 2024-04-02 | 宁波方太厨具有限公司 | Fireproof valve for range hood |
| CN108488445A (en) * | 2018-06-26 | 2018-09-04 | 盐城市百世达建材有限公司 | A kind of fire-preventing check valve |
| CN108488445B (en) * | 2018-06-26 | 2023-12-22 | 盐城市百世达建材有限公司 | Fireproof check valve |
| CN109027272A (en) * | 2018-10-31 | 2018-12-18 | 廊坊金盾华通科技有限公司 | A kind of fire-preventing check valve |
| CN109185520A (en) * | 2018-11-06 | 2019-01-11 | 陈开兵 | A kind of fireproof check valve for combined flue |
| CN109185520B (en) * | 2018-11-06 | 2024-05-07 | 陈开兵 | Combined type flue fireproof check valve |
| CN110440036A (en) * | 2019-07-19 | 2019-11-12 | 广州市法玉环保科技有限公司 | A kind of fire-preventing check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107489794B (en) | 2024-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107489794A (en) | A kind of oil-smoke-exhausting fireproof check valve | |
| CN209309418U (en) | Use safe oil-smoke-exhausting fireproof check valve | |
| CN104819324B (en) | A kind of kitchen ventilator fire resisting damper | |
| CN209781772U (en) | Fireproof check valve | |
| CN207268320U (en) | A kind of oil-smoke-exhausting fireproof check valve | |
| CN109944972A (en) | Fire resisting damper executing agency | |
| CN207584092U (en) | A kind of fireproof check valve for flue with double valve sheet | |
| CN210461834U (en) | Bidirectional fireproof check valve | |
| CN203248797U (en) | Flue non-return fire damper | |
| CN216479144U (en) | Fireproof check valve with internal and external double fireproof functions | |
| CN113864499B (en) | Fireproof check valve with inner and outer fireproof functions | |
| CN207246494U (en) | A kind of monolithic valve fireproof check valve for flue | |
| CN208535256U (en) | A kind of fire resisting damper for range hood | |
| CN101608702A (en) | A kind of check fire valve for flue | |
| CN205479533U (en) | Grease proofing cigarette flows backward check valve | |
| CN213017899U (en) | Fireproof check valve for oil smoke exhaust | |
| CN112303254B (en) | Fireproof check valve | |
| CN212616530U (en) | Fireproof check valve | |
| CN109751437A (en) | A kind of fireproof check valve for flue with double valve sheet | |
| CN209054125U (en) | A kind of flow-guiding type fire-preventing check valve | |
| CN110067883A (en) | A kind of oil-smoke-exhausting fireproof check valve | |
| CN210135282U (en) | Fireproof check valve with locking mechanism | |
| CN201973302U (en) | Fire-proof check valve | |
| CN209026273U (en) | A kind of fire resisting damper for range hood | |
| CN205064972U (en) | A fire prevention valve for lampblack absorber flue |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |