CN115978261B - Kitchen flue airtight fire damper - Google Patents
Kitchen flue airtight fire damper Download PDFInfo
- Publication number
- CN115978261B CN115978261B CN202310102139.6A CN202310102139A CN115978261B CN 115978261 B CN115978261 B CN 115978261B CN 202310102139 A CN202310102139 A CN 202310102139A CN 115978261 B CN115978261 B CN 115978261B
- Authority
- CN
- China
- Prior art keywords
- valve
- airtight
- valve body
- flue
- plate
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Safety Valves (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention discloses a kitchen flue airtight fireproof valve which comprises a diversion structure, an airtight valve and a control structure, wherein the airtight valve is arranged between a flue vertical shaft and a range hood pipeline, the diversion structure is arranged at the rear end of the airtight valve and is positioned in the flue vertical shaft, and the control structure is arranged outside the airtight valve and is connected with the airtight valve. The flow guiding structure has a fireproof function, the flow guiding plate is turned over to seal the valve body after the fusing component is fused in an emergency, safety is guaranteed when the emergency occurs, and meanwhile, the flow guiding structure has a flow guiding effect when smoke is discharged into the flue, so that the defect that the traditional direct oil discharge smoke forms turbulent flow in the flue to influence the pressure in the oil discharge smoke pipe is avoided, and smooth discharge of the smoke is realized; the pressure gauge and the pressure pipe are arranged in the control structure, and the power of the range hood and the actual pressure in the fume exhaust pipe are integrated to control the opening and closing degree of the valve clack, so that smooth fume exhaust is ensured.
Description
Technical Field
The invention relates to the technical field of flue fume exhausting devices, in particular to a kitchen flue airtight fireproof valve.
Background
The kitchen of residential building often can appear the condition of fume extraction and smell, one of them main reason is that the quality of fume extraction airtight valve is relatively poor, has the condition that airtight is not tight, and then the problem of smell is crossed. The existing sealing valve is not tightly sealed and mainly comprises two aspects. Firstly, the structure itself has the defect that the existing valve blade is closed by means of a spring or dead weight, a large amount of oil dirt is accumulated around the valve blade and is agglomerated after the valve blade is used for a period of time, a large gap is formed due to the limitation of the oil dirt when the valve blade is closed, and when the interior of a flue is at positive pressure, smoke exhausted by other users enters a room through a closed valve which is not tight. Secondly, the mounting is defective, and the valve body is sealed poorly when connecting the flue shaft to form the air leakage or the valve body is airtight when connecting the lampblack absorber hose not tightly to form the air leakage.
The existing flue sealing valve solves the defects by improving the structure, firstly, the structure of sealing by means of a spring or a dead weight valve clack is improved to be electrically driven to be closed, namely, a sealing structure of a check valve is not adopted, and the check function is realized by adopting an electric valve mode; because the torque for closing the valve clack is increased, the situation of adhesion or jamming of the oil smoke is reduced to the greatest extent, and the sealing performance is enhanced. And secondly, a seal is additionally arranged at the joint of the valve body and the flue shaft and the joint of the valve body and the oil fume exhaust pipe so as to improve the tightness.
The existing electric flue sealing valve greatly avoids the problem of fume exhaust and odor tainting, but has the major defect that firstly, the electric control can only realize the automatic opening of the electric valve in linkage with the range hood, but cannot be automatically closed when emergency occurs under the condition that the range hood is opened, so that toxic fume can enter a kitchen along a fume exhaust pipe, the fire prevention function is lacked, and certain potential safety hazard exists. And secondly, because the electric valve is linked with the range hood, the opening and closing degree of the electric valve is only the same as the power of the range hood, the electric valve cannot be adjusted according to the actual pressure in the fume exhaust pipe, and the condition that fume cannot be smoothly exhausted possibly exists or other households in the same flue are influenced. The invention provides a kitchen flue airtight fireproof valve which solves the problems.
Disclosure of Invention
The invention provides a kitchen flue airtight fireproof valve, which solves the problem that the kitchen flue airtight fireproof valve cannot be automatically closed to seal oil smoke in emergency, and simultaneously realizes linkage with actual pressure in a smoke exhaust pipe to realize smooth smoke exhaust.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the kitchen flue airtight fireproof valve comprises a flow guiding structure, an airtight valve and a control structure, wherein the airtight valve is arranged between a flue vertical shaft and a range hood pipeline, the flow guiding structure is arranged at the rear end of the airtight valve and is positioned in the flue vertical shaft, and the control structure is arranged outside the airtight valve and is connected with the airtight valve;
the closed valve comprises a valve body and a valve plate, and the valve plate is movably connected in the valve body; the flow guiding structure comprises a flow guiding plate and a fusing component, wherein the flow guiding plate is movably arranged in the valve body and has an open state and a closed state, the open state is kept through the fusing component, and the fusing component is arranged in the valve body and is connected with the flow guiding plate.
Further, the control structure comprises an actuator, a controller, a pressure gauge and a pressure pipe, wherein the actuator and the pressure gauge are connected with the controller, the actuator is connected with the valve plate, one end of the pressure pipe is connected with the pressure gauge, the other end of the pressure pipe is connected to the valve body, communicated with the inner cavity of the valve body and located at the front end of the valve plate.
Further, the fusing component comprises a hinged support, a fusing piece and a reset spring, wherein the hinged support is arranged in the inner cavity of the valve body, the fusing piece and the reset spring are respectively arranged on the upper side and the lower side of the hinged support, and the guide plate is connected with the hinged support.
Further, the valve plate comprises a valve plate and a limiting ring, the valve plate is connected in the valve body through a rotating shaft, the limiting ring is arranged in an inner cavity of the valve body, and in a closed state, the valve plate is attached to the limiting ring.
Further, the guide plate is a folded plate and comprises a guide section and a horizontal section, the horizontal section is in a horizontal state in an opened state, the guide plate is connected to the rear end of the valve body through a rotating shaft, and the hinged support is movably connected to the front side part of the guide plate.
Further, the hinged support comprises a sliding hinged support and a connecting rod, and the sliding hinged support is arranged in a limiting groove of the inner cavity wall of the valve body and is connected with the guide plate through the connecting rod.
Further, the guide plates are arranged in groups, are connected to the same sliding hinged support through connecting rods, are mutually attached in a closed state, and seal the inner cavity of the valve body.
Further, the fusing temperature of the fuse link is 150 ℃.
Further, the valve body is detachably connected to the flue through bolts.
Further, a knob and a scale are arranged outside the actuator.
The invention has the following beneficial effects:
the flow guiding structure has a fireproof function, the flow guiding plate is turned over to seal the valve body after the fusing component is fused in an emergency, safety is guaranteed when the emergency occurs, and meanwhile, the flow guiding structure has a flow guiding effect when smoke is discharged into the flue, so that the defect that the conventional direct oil discharge smoke forms turbulent flow in the flue to influence the pressure in the oil discharge smoke pipe is avoided, and smooth discharge of the smoke is realized;
the pressure gauge and the pressure pipe are arranged in the control structure, and the power of the range hood and the actual pressure in the fume exhaust pipe are integrated to control the opening and closing degree of the valve clack, so that smooth fume exhaust is ensured.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the valve plate of the present invention in an open state;
FIG. 3 is a schematic view of a fused fire protection state of the present invention;
FIG. 4 is a schematic view of the internal cavity structure of the valve body of the present invention;
FIG. 5 is a schematic diagram of the flow direction of the fume in the prior art;
fig. 6 is a schematic diagram of the flow direction of the oil smoke air flow after the flow guiding in the present invention.
Reference numerals: 1-flow guiding structure, 11-flow guiding plate, 12-hinged support, 13-fuse link, 14-return spring, 2-sealing valve, 21-valve body, 22-valve plate, 221-valve plate, 222-limit ring, 3-control structure and 31-pressure pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of this patent, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the patent and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting the patent.
As shown in fig. 1, 2 and 3, the airtight fire damper for kitchen flue comprises a diversion structure 1, an airtight valve 2 and a control structure 3, wherein the airtight valve 2 is arranged between a flue shaft and a range hood pipeline to realize the functions of exhausting fume and opening and closing an exhaust channel, the diversion structure 1 is arranged at the rear end of the airtight valve 2 and is positioned in the flue shaft to have the functions of diversion and fire prevention, so that the efficiency and the effect of exhausting fume are improved, the use safety is improved, and the control structure 3 is arranged outside the airtight valve 2 and is connected with the airtight valve 2 to control the opening and closing degree of the airtight valve 2.
According to the invention, the opening and closing degree of the valve plate 22 is accurately adjusted through the control structure 3, so that waste and noise influence caused by unsmooth smoke discharge or overlarge pressure of the range hood due to overhigh pressure in a flue are avoided; the guide plate 11 of the guide structure 1 is used for changing the discharge angle and the flow direction of the smoke, so that the problem that the smoke is not smooth due to turbulence caused by the impact of the directly discharged smoke on the flue is avoided, the inner cavity of the valve body 21 is sealed after the fusing member is fused in an emergency, and the toxic smoke is prevented from entering the room along the flue.
As shown in fig. 2 and 3, further, the sealing valve 2 includes a valve body 21 and a valve plate 22, and the valve plate 22 is movably connected in the valve body 21; the flow guiding structure 1 comprises a flow guiding plate 11 and a fusing component, wherein the flow guiding plate 11 is movably arranged in the valve body 21 and has an open state and a closed state, and the open state is kept through the fusing component, and the fusing component is arranged in the valve body 21 and is connected with the flow guiding plate 11.
Further, the control structure 3 includes an actuator, a controller, a pressure gauge and a pressure pipe 31, wherein the actuator and the pressure gauge are connected with the controller, the controller is used for receiving data of the actuator and the pressure gauge and is connected with the range hood, the actuator is connected with the valve plate 22, one end of the pressure pipe 31 is connected with the pressure gauge, the other end is connected with the valve body 21, is communicated with an inner cavity of the valve body 21, and is positioned at the front end of the valve plate 22.
In the existing residential kitchen, a part of households can choose a high-power range hood for ensuring the fume exhaust effect of the households when finishing, and when in actual use, as the fume exhaust effect of the part of households is high, the overall pressure in a flue can be increased after fume is exhausted into the flue, and for users who do not adopt the high-power range hood, the situation that the fume exhaust is unsmooth even the fume flows backwards in the flue due to insufficient pressure of the fume exhaust exists, so that the normal use experience of the part of users is influenced. The invention adopts the control structure 3 to regulate and control the opening and closing degree of the valve plate 22 in real time, ensures that the required air quantity can be achieved during use, and does not overflow, thereby realizing smooth oil smoke discharge and avoiding the influence on other users.
The control principle of the control structure 3 is as follows: the actuator is used as an actuator, the opening and closing and the opening and closing degree of the valve plate 22 are controlled, the two ends of the pressure pipe 31 are respectively connected with the inner cavity of the valve body 21 and the pressure gauge, the real-time pressure at the front end of the valve plate 22 is transmitted to the pressure gauge, the pressure gauge converts the real-time pressure into data and transmits the data to the controller, the controller is connected with the actuator, the pressure gauge and the range hood and is used for receiving real-time power data of the range hood, the real-time pressure data transmitted by the pressure gauge and the opening and closing degree data of the actuator, and the actuator is controlled to act to realize accurate opening and closing of the valve plate 22 after calculation, so that smooth oil smoke is realized.
The principle of realizing the fireproof effect of the diversion structure 1 is as follows: under the normal fume exhaust condition, the fuse link 13 keeps the form, and the deflector 11 is limited in a deflector state; under emergency, the high-temperature smoke fuses the fuse link 13, the hinged support 12 moves downwards under the pulling of the reset spring 14, the hinged support 12 drives the guide plate 11 to turn over when moving, the inner cavity channel of the valve body 21 is closed, and further the entry of toxic and harmful gas along the oil discharge flue is avoided.
As shown in fig. 2 and 3, further, the fusing member includes a hinge base 12, a fuse link 13 and a return spring 14, the hinge base 12 is disposed in an inner cavity of the valve body 21, the fuse link 13 and the return spring 14 are disposed vertically and correspondingly, and are disposed on upper and lower sides of the hinge base 12, the fuse link 13 and the return spring 14 normally limit the state of the hinge base 12, and after the fuse link 13 is fused, the return spring 14 moves downward, and under the limit of the limit groove, the hinge base 12 moves downward together, and the deflector 11 is connected with the hinge base 12 and moves together with the hinge base 12.
As shown in fig. 2, 3 and 4, further, the valve plate 22 includes a valve plate 221 and a limiting ring 222, the valve plate 221 is connected in the valve body 21 through a rotating shaft, the limiting ring 222 is disposed in an inner cavity of the valve body 21, and in a closed state, the valve plate 221 is attached to the limiting ring 222.
As shown in fig. 5 and 6, further, the baffle 11 is a folded plate, and includes a flow guiding section and a horizontal section, the horizontal section is in a horizontal state in an opened state, the flow guiding section is disposed at a rear portion of the horizontal section, the flow guiding section is inclined upward and forms an included angle of 135 ° with the horizontal section, the baffle 11 is connected to a rear end of the valve body 21 through a rotating shaft, and the hinged support 12 is movably connected to a front side portion of the baffle 11.
As shown in fig. 5 and 6, after the conventional direct oil fume enters the flue, the conventional direct oil fume can impact the inner wall of the flue to form turbulent flow, part of air flow can rebound back into the valve body, so that the oil fume to be discharged is interfered, the discharge of the oil fume is influenced, and part of air flow flows back to the upward and inward direction after rebounding through the inner wall of the flue, and the oil fume discharged by the householder above can be influenced when the air flow is large. The air flow is discharged upwards in an inclined way by the guide plate 11, and can become vertical upwards air flow after impacting the flue wall in an inclined way in a short stroke, so that the upper householder cannot be influenced.
As shown in fig. 2 and 3, further, the hinge base 12 includes a sliding hinge base and a connecting rod, the sliding hinge base is disposed in a limiting groove on the inner cavity wall of the valve body 21, and the limiting groove limits the movement track of the sliding hinge base, so that the sliding hinge base moves vertically downward, and drives the baffle 11 to turn over, and is connected with the baffle 11 through the connecting rod.
Further, the guide plates 11 are arranged in parallel up and down and are arranged in groups, and are connected to the same sliding hinged support through connecting rods, in the closed state, the guide plates 11 are turned over, the edges of the adjacent guide plates 11 are mutually attached to form a circular baffle structure, and the inner cavity of the valve body 21 is closed.
Further, the fusing temperature of the fuse link 13 is 150 ℃.
Further, the valve body 21 is detachably connected to the flue through bolts, so that the detachable connection of the fireproof valve is realized, and the cleaning and maintenance are convenient.
Further, a knob and a scale are arranged outside the actuator, and when the actuator controls the valve plate 22 to open, the external knob synchronously rotates to display the opening and closing degree of the current valve plate 22.
Preferably, the pressure tube 31 is a flexible rubber hose. The pressure gauge monitors the real-time pressure in the valve body 21 through the pressure pipe 31, and the pressure pipe 31 is connected to the front end of the valve body 21 for monitoring the front end pressure of the valve body, namely, the real-time fume exhaust pressure.
Preferably, the cross section of the inner cavity of the valve body 21 is circular, the valve plate 221 is correspondingly circular, and the limiting ring 222 is correspondingly circular.
Further, a sealing gasket is provided at the outer peripheral edge of the valve plate 221.
Preferably, the valve body 21 and the baffle 11 are made of stainless steel with a thickness of 1mm, and the valve plate 221 is made of stainless steel with a thickness of 2 mm.
Preferably, the front end of the valve body 21 is provided with a bend for connecting with a fume exhaust pipe, so as to improve the tightness during connection.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (6)
1. The kitchen flue airtight fireproof valve is characterized by comprising a diversion structure (1), an airtight valve (2) and a control structure (3), wherein the airtight valve (2) is arranged between a flue shaft and a range hood pipeline, the diversion structure (1) is arranged at the rear end of the airtight valve (2) and is positioned in the flue shaft, and the control structure (3) is arranged outside the airtight valve (2) and is connected with the airtight valve (2);
the airtight valve (2) comprises a valve body (21) and a valve plate (22), wherein the valve plate (22) is movably connected in the valve body (21); the flow guiding structure (1) comprises a flow guiding plate (11) and a fusing component, wherein the flow guiding plate (11) is movably arranged in the valve body (21) and has an open state and a closed state, and the opening state is kept through the fusing component, and the fusing component is arranged in the valve body (21) and is connected with the flow guiding plate (11);
the fusing component comprises a hinged support (12), a fusing piece (13) and a return spring (14), wherein the hinged support (12) is arranged in an inner cavity of the valve body (21), the fusing piece (13) and the return spring (14) are respectively arranged on the upper side and the lower side of the hinged support (12), and the guide plate (11) is connected with the hinged support (12);
the guide plate (11) is a folded plate and comprises a guide section and a horizontal section, the horizontal section is in a horizontal state in an opened state, the guide plate (11) is connected to the rear end of the valve body (21) through a rotating shaft, and the hinged support (12) is movably connected to the front side part of the guide plate (11);
the fusing temperature of the fuse link (13) is 150 ℃;
the valve body (21) is detachably connected to the flue through bolts.
2. The kitchen flue airtight fire damper according to claim 1, wherein: the control structure (3) comprises an actuator, a controller, a pressure gauge and a pressure pipe (31), wherein the actuator and the pressure gauge are connected with the controller, the actuator is connected with the valve plate (22), one end of the pressure pipe (31) is connected with the pressure gauge, the other end of the pressure pipe is connected to the valve body (21), is communicated with the inner cavity of the valve body (21) and is positioned at the front end of the valve plate (22).
3. The kitchen flue airtight fire damper according to claim 1, wherein: the valve plate (22) comprises a valve plate (221) and a limiting ring (222), the valve plate (221) is connected in the valve body (21) through a rotating shaft, the limiting ring (222) is arranged in an inner cavity of the valve body (21), and in a closed state, the valve plate (221) is attached to the limiting ring (222).
4. The kitchen flue airtight fire damper according to claim 1, wherein: the hinged support (12) comprises a sliding hinged support and a connecting rod, and the sliding hinged support is arranged in a limit groove of the inner cavity wall of the valve body (21) and is connected with the guide plate (11) through the connecting rod.
5. The kitchen flue airtight fire damper according to claim 4, wherein: the guide plates (11) are arranged in groups and are connected to the same sliding hinged support through connecting rods, and in a closed state, the guide plates (11) are mutually attached and seal the inner cavity of the valve body (21).
6. The kitchen flue airtight fire damper according to claim 2, wherein: the outside of the actuator is provided with a knob and a scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310102139.6A CN115978261B (en) | 2023-02-13 | 2023-02-13 | Kitchen flue airtight fire damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310102139.6A CN115978261B (en) | 2023-02-13 | 2023-02-13 | Kitchen flue airtight fire damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115978261A CN115978261A (en) | 2023-04-18 |
| CN115978261B true CN115978261B (en) | 2023-08-04 |
Family
ID=85974363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310102139.6A Active CN115978261B (en) | 2023-02-13 | 2023-02-13 | Kitchen flue airtight fire damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115978261B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117570235B (en) * | 2024-01-12 | 2024-04-23 | 江苏峰华空调设备有限公司 | Smoke exhaust fire-proof valve for air conditioning system |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004003275U1 (en) * | 2004-03-03 | 2005-07-21 | Bartholomäus, Gert | Fire protection valve has valve plate formed by hollow body filled with foaming material and with one part fixed to guide element of valve and other mounted displaceable on the guide element |
| CN201811255U (en) * | 2010-09-21 | 2011-04-27 | 吕银华 | Removable flue fireproof check valve |
| CN102359634A (en) * | 2011-09-14 | 2012-02-22 | 吕银华 | Fireproof check valve for combined flue |
| KR101389541B1 (en) * | 2013-01-10 | 2014-04-25 | (주)한솔하이테크 | Fire pretection system for kitchen |
| CN203730887U (en) * | 2014-03-21 | 2014-07-23 | 黑龙江浩德蓝海城市节能服务有限公司 | Electric adjusting valve |
| CN205991206U (en) * | 2016-08-30 | 2017-03-01 | 巫智园 | A kind of diversion check device |
| CN206539756U (en) * | 2016-12-28 | 2017-10-03 | 杭州老板电器股份有限公司 | The Electric air valve that a kind of air quantity is automatically adjusted |
| CN207865493U (en) * | 2018-01-18 | 2018-09-14 | 浙江意米特电器有限公司 | Rotary type fire safe integrated kitchen range |
| CN209622139U (en) * | 2019-03-25 | 2019-11-12 | 河南锦瀚通风设备有限公司 | A kind of flue check device |
| CN110778350A (en) * | 2019-11-20 | 2020-02-11 | 中国建筑标准设计研究院有限公司 | Protective closed gate valve of wall-through air duct and closing method thereof |
| CN111878609A (en) * | 2020-08-04 | 2020-11-03 | 李永彬 | Fireproof check valve for fume extractor |
| CN213017945U (en) * | 2020-08-28 | 2021-04-20 | 河南锦瀚通风设备有限公司 | Fireproof flue non-return device |
| CN213017899U (en) * | 2020-07-06 | 2021-04-20 | 姚世杰 | Fireproof check valve for oil smoke exhaust |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2770380C (en) * | 2011-04-15 | 2017-08-15 | Serge Ramsay | Exhaust vent |
-
2023
- 2023-02-13 CN CN202310102139.6A patent/CN115978261B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004003275U1 (en) * | 2004-03-03 | 2005-07-21 | Bartholomäus, Gert | Fire protection valve has valve plate formed by hollow body filled with foaming material and with one part fixed to guide element of valve and other mounted displaceable on the guide element |
| CN201811255U (en) * | 2010-09-21 | 2011-04-27 | 吕银华 | Removable flue fireproof check valve |
| CN102359634A (en) * | 2011-09-14 | 2012-02-22 | 吕银华 | Fireproof check valve for combined flue |
| KR101389541B1 (en) * | 2013-01-10 | 2014-04-25 | (주)한솔하이테크 | Fire pretection system for kitchen |
| CN203730887U (en) * | 2014-03-21 | 2014-07-23 | 黑龙江浩德蓝海城市节能服务有限公司 | Electric adjusting valve |
| CN205991206U (en) * | 2016-08-30 | 2017-03-01 | 巫智园 | A kind of diversion check device |
| CN206539756U (en) * | 2016-12-28 | 2017-10-03 | 杭州老板电器股份有限公司 | The Electric air valve that a kind of air quantity is automatically adjusted |
| CN207865493U (en) * | 2018-01-18 | 2018-09-14 | 浙江意米特电器有限公司 | Rotary type fire safe integrated kitchen range |
| CN209622139U (en) * | 2019-03-25 | 2019-11-12 | 河南锦瀚通风设备有限公司 | A kind of flue check device |
| CN110778350A (en) * | 2019-11-20 | 2020-02-11 | 中国建筑标准设计研究院有限公司 | Protective closed gate valve of wall-through air duct and closing method thereof |
| CN213017899U (en) * | 2020-07-06 | 2021-04-20 | 姚世杰 | Fireproof check valve for oil smoke exhaust |
| CN111878609A (en) * | 2020-08-04 | 2020-11-03 | 李永彬 | Fireproof check valve for fume extractor |
| CN213017945U (en) * | 2020-08-28 | 2021-04-20 | 河南锦瀚通风设备有限公司 | Fireproof flue non-return device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115978261A (en) | 2023-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115978261B (en) | Kitchen flue airtight fire damper | |
| CN218895022U (en) | High airtight fire damper for residential kitchen | |
| CN218913874U (en) | Flue airtight fire damper with flow guiding function | |
| CN104197391A (en) | Range hood net cover and range hood applying same | |
| CN205350458U (en) | Water conservancy diversion flue fire protecion check valve with adjustable | |
| CN202561142U (en) | Fireproof check valve for kitchen flue | |
| CN215293619U (en) | Flue gas baffle valve | |
| CN202937846U (en) | Easy-to-disassemble and good-air-tightness pendent check valve for laboratory ventilation system | |
| CN204923917U (en) | Portable dust collector in line frequency furnace stokehold | |
| CN211372456U (en) | A device that is used for collection ash of biomass boiler convection tube below to go out ash automatically | |
| CN206145195U (en) | Water conservancy diversion non return device | |
| CN106439120A (en) | Flow guide non-return device | |
| CN219345534U (en) | Water leakage-proof fire valve | |
| CN208311614U (en) | A kind of novel fire damper | |
| CN202284667U (en) | Check fire resisting damper for flue | |
| CN206448492U (en) | The anti-taint of odour device of flue | |
| CN202017329U (en) | Centralized oil smoke emission system for storied buildings | |
| CN112825420A (en) | Dust type box-type substation with adjustable damper | |
| CN205198744U (en) | High -rise residential building flue fire prevention control system | |
| CN210441234U (en) | Plate-type smoke exhaust port for medical environment | |
| CN218328308U (en) | Assembled oil smoke prevention and self-cleaning air valve | |
| CN213982143U (en) | Fireproof check valve | |
| CN216242541U (en) | High-temperature fire-proof valve with automatic reset function | |
| CN221121103U (en) | Safety fire-proof valve with sealing smoke-discharging structure | |
| CN220060574U (en) | Smoke discharging fireproof valve with adjustable smoke discharging amount |
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 |