CN115978261A

CN115978261A - Kitchen flue closed fire-proof valve

Info

Publication number: CN115978261A
Application number: CN202310102139.6A
Authority: CN
Inventors: 韩宇; 李本强; 刘红; 林涛
Original assignee: China Institute of Building Standard Design and Research Co Ltd
Current assignee: China Institute of Building Standard Design and Research Co Ltd
Priority date: 2023-02-13
Filing date: 2023-02-13
Publication date: 2023-04-18
Anticipated expiration: 2043-02-13
Also published as: CN115978261B

Abstract

The invention discloses a kitchen flue closed fire-proof valve which comprises a flow guide structure, a closed valve and a control structure, wherein the closed valve is arranged between a flue vertical shaft and a range hood pipeline, the flow guide structure is arranged at the rear end of the closed valve and positioned in the flue vertical shaft, and the control structure is arranged outside the closed valve and connected with the closed valve. The flow guide structure has a fireproof function, the flow guide plate is turned over to seal the valve body after the fusing component is fused in an emergency, safety is guaranteed in the emergency, and meanwhile, the flow guide effect of the flow guide structure prevents the defect that the pressure in the fume exhaust pipe is influenced by turbulence formed in the flue by the traditional straight fume exhaust pipe when the fume is exhausted into the flue, so that the fume is smoothly exhausted; set up manometer and pressure pipe in control structure, synthesize the power of lampblack absorber and the intraductal actual pressure of oil extraction cigarette and carry out the control of valve clack degree of opening and shutting, guarantee smooth and easy oil extraction cigarette.

Description

Kitchen flue closed fire-proof valve

Technical Field

The invention relates to the technical field of flue oil fume exhaust devices, in particular to a kitchen flue closed fireproof valve.

Background

The situation of tainting odor of oil smoke discharged from the kitchen of a residential building often occurs, and one of the main reasons is that the quality of an oil smoke discharge sealed valve is poor, the situation of poor sealing exists, and the problem of tainting odor occurs. The sealing of the existing sealing valve is not tight and mainly comprises two aspects. Firstly, there is the defect in structure itself, and current valve blade relies on spring or dead weight to close, uses a period after, piles up a large amount of grease and caking around valve blade, because the grease restriction has formed great gap when valve blade closes, when being in the malleation in the flue, other user exhaust flue gases get into indoorly through airtight not tight airtight valve. And secondly, the defect exists during installation, and the air leakage is formed due to poor sealing when the valve body is connected with the vertical shaft of the flue or the air leakage is formed due to poor sealing when the valve body is connected with the hose of the range hood.

The existing flue closed valve solves the defects through improving the structure, firstly, the structure of closing by a spring or a valve clack with dead weight is improved into electric drive closing, namely, a sealing structure of a check valve is not adopted, and the check function is realized by an electric valve instead; because the torque for closing the valve clack is increased, the oil smoke adhesion or jamming condition is reduced to the maximum extent, and the sealing performance is enhanced. And secondly, seals are 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 to improve the sealing property.

The problem of the oil extraction cigarette cluster of having avoided that current electronic flue sealed valve is very big still has great defect, adopts electric control can only realize carrying out the automation of motorised valve with the lampblack absorber linkage to open, but unable self-closing when taking place emergency under the condition that the lampblack absorber was opened can lead to poisoning the flue gas and follow the oil extraction cigarette pipe and get into the kitchen, lacks the fire prevention function, has certain potential safety hazard. 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 oil smoke exhaust pipe, the condition that the oil smoke cannot be smoothly exhausted exists, or other residents using the same flue are influenced. The invention provides a kitchen flue closed fire damper to solve the problems.

Disclosure of Invention

The invention provides a kitchen flue closed fire-proof valve, which solves the problem that oil smoke can not be closed automatically to seal in emergency, and simultaneously realizes linkage with actual pressure in an oil smoke discharging pipe to discharge oil smoke smoothly.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a kitchen flue airtight fire prevention valve, includes water conservancy diversion structure, airtight valve and control structure, airtight valve is established between flue shaft and lampblack absorber pipeline, the water conservancy diversion structure is established at the rear end of airtight valve, is located the flue shaft, control structure establishes outside airtight valve to be connected with 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 guide structure comprises a flow guide plate and a fusing component, wherein the flow guide plate is movably arranged in the valve body, has an opening state and a closing state, and is kept in the opening state through the fusing component, and the fusing component is arranged in the valve body and is connected with the flow guide plate.

Further, control structure includes executor, controller, pressure gauge and manometer pipe, executor and pressure gauge are connected with the controller, the executor is connected with the valve block, the one end and the pressure gauge of manometer pipe are connected, and the other end is connected on the valve body, with valve body inner chamber UNICOM to be located the front end of valve block.

Furthermore, the fusing component comprises a hinged support, a fuse link and a return spring, the hinged support is arranged in the inner cavity of the valve body, the fuse link and the return 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 the valve plate is attached to the limiting ring in a closed state.

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 opening 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 portion of the guide plate.

Furthermore, the hinged support comprises a sliding hinged support and a connecting rod, and the sliding hinged support is arranged in a limiting groove in the wall of the inner cavity of the valve body and is connected with the guide plate through the connecting rod.

Further, the guide plates are arranged in groups and connected to the same sliding hinged support through connecting rods, and in the closed state, the guide plates are attached to each other and seal the inner cavity of the valve body.

Further, the fusing temperature of the fuse link is 150 ℃.

Further, the air conditioner is provided with a fan, the valve body is detachably connected to the flue through a bolt.

Furthermore, a knob and scales are arranged outside the actuator.

The invention has the following beneficial effects:

the flow guide structure has a fireproof function, the flow guide plate is turned over to seal the valve body after the fusing component is fused in an emergency, safety is guaranteed in the emergency, and meanwhile, the flow guide effect of the flow guide structure prevents the defect that the pressure in the oil smoke exhaust pipe is influenced by the turbulent flow formed in the flue by the traditional directly-discharged oil smoke when the smoke is exhausted into the flue, so that the smoke is smoothly exhausted;

set up manometer and pressure pipe in control structure, synthesize the power of lampblack absorber and the intraductal actual pressure of oil extraction cigarette and carry out the control of valve clack degree of opening and shutting, guarantee smooth and easy oil extraction cigarette.

Drawings

FIG. 1 is a schematic view 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 the present invention in a blown fire-proof state;

FIG. 4 is a schematic view of the structure of the inner cavity of the valve body according to the present invention;

FIG. 5 is a schematic flow diagram of a prior art oil fume stream;

FIG. 6 is a schematic view of the flow direction of the flue gas after diversion according to the present invention.

Reference numerals are as follows: the device comprises a flow guide structure 1, a flow guide plate 11, a hinge seat 12, a fuse link 13, a return spring 14, a sealed valve 2, a valve body 21, a valve plate 22, a valve plate 221, a valve plate 222, a limiting ring 3, a control structure and a pressure pipe 31.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the figures, which are based on the orientations and positional relationships shown in the figures, and are used for convenience in describing the patent and for simplicity in description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the patent.

As shown in fig. 1, 2, 3, an airtight fire prevention valve of kitchen flue, including water conservancy diversion structure 1, airtight valve 2 and control structure 3, airtight valve 2 is established between flue shaft and lampblack absorber pipeline, realizes oil extraction cigarette and the effect of opening and shutting exhaust passage, water conservancy diversion structure 1 is established at the rear end of airtight valve 2, is located the flue shaft, has water conservancy diversion and fire prevention effect, promotes oil extraction cigarette efficiency and effect to promote the safety in utilization, control structure 3 establishes in airtight valve 2 outsidely to be connected with airtight valve 2, the degree of opening and shutting of control airtight valve 2.

The opening and closing degree of the valve plate 22 is accurately adjusted through the control structure 3, so that the problems of unsmooth smoke discharge caused by overhigh pressure in a flue or waste and noise influence caused by overhigh pressure of a range hood are avoided; the guide plate 11 of the guide structure 1 is used for changing the exhaust angle and the flow direction of the flue gas, the problem that the oil smoke is not smooth due to turbulent flow caused by impact of the directly-discharged flue gas on a flue is avoided, and the fusing component seals the inner cavity of the valve body 21 after being fused in an emergency, so that toxic flue gas is prevented from entering a room along the flue.

As shown in fig. 2 and 3, further, the closed 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 guide structure 1 comprises a flow guide plate 11 and a fusing member, wherein the flow guide plate 11 is movably arranged in a valve body 21 and has an open state and a closed state, the open state is kept through the fusing member, and the fusing member is arranged in the valve body 21 and connected with the flow guide plate 11.

Further, control structure 3 includes executor, controller, pressure gauge and pressure pipe 31, executor and pressure gauge are connected with the controller, and the controller is used for receiving the data of executor and pressure gauge to be connected with the lampblack absorber, the executor is connected with valve block 22, the one end and the pressure gauge of pressure pipe 31 are connected, and the other end is connected on valve body 21, with 21 inner chambers UNICOM of valve body to be located the front end of valve block 22.

In the existing residential kitchen, a high-power range hood can be selected for use in order to ensure the oil smoke discharging effect of part of residents when the residential kitchen is decorated, and when the residential kitchen is actually used, because the range hood of the part of users has high power, the integral pressure in a flue can be increased after smoke is discharged into the flue, and for the users who do not adopt the high-power range hood, the situation that the oil smoke discharging is not smooth or even the smoke flows backwards in the flue due to insufficient pressure of the range hood 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 reached during use, does not overflow, and further realizes smooth oil smoke discharge and avoids the influence on other users.

The control principle of the control structure 3 is as follows: the executor is as the actor, the opening and shutting and the degree of opening and shutting of

control valve piece

22, 21 inner chambers of valve body and pressure gauge are connected respectively to pressure pipe 31's both ends, transmit the real-time pressure of valve piece 22 front end to the pressure gauge in, the pressure gauge converts real-time pressure into data and transmits to the controller in, controller and executor, pressure gauge and lampblack absorber are connected, a real-time power data for receiving the lampblack absorber, the real-time pressure data of pressure gauge conveying and the degree data of opening and shutting of executor, control the executor after calculating and move the accuracy that realizes valve piece 22 and open and shut, and then realize smooth oil extraction cigarette.

The principle of the diversion structure 1 for realizing the fireproof effect is as follows: under the condition of normal oil smoke discharge, the fuse link 13 keeps the shape and limits the guide plate 11 in a guide state; under the emergency condition, the fuse link 13 is fused by high-temperature smoke, the hinged support 12 moves downwards under the pulling of the reset spring 14, the guide plate 11 is driven to turn over the hinged support 12 when the hinged support 12 moves, an inner cavity channel of the valve body 21 is sealed, and then toxic and harmful gas is prevented from entering along an oil discharge flue.

As shown in fig. 2 and 3, the fusing member further includes a hinged support 12, a fuse 13 and a return spring 14, the hinged support 12 is disposed in the inner cavity of the valve body 21, the fuse 13 and the return spring 14 are disposed up and down and correspondingly and are disposed on the upper and lower sides of the hinged support 12, the fuse 13 and the return spring 14 normally limit the state of the hinged support 12, after the fuse 13 is fused, the return spring 14 moves downward and enables the hinged support 12 to move downward together under the limit of the limit groove, and the guide plate 11 is connected with the hinged support 12 and moves together with the hinged support 12.

As shown in fig. 2, 3 and 4, the valve plate 22 further 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 the inner cavity of the valve body 21, and in the closed state, the valve plate 221 is attached to the limiting ring 222.

As shown in fig. 5 and 6, further, the guide plate 11 is a folded plate, and includes a guide section and a horizontal section, in an open state, the horizontal section is in a horizontal state, the guide section is disposed at the rear portion of the horizontal section, the guide section is inclined upward and forms an included angle of 135 degrees with the horizontal section, 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 portion of the guide plate 11.

As shown in fig. 5 and 6, after entering the flue, the traditional direct-exhaust flue gas can impact the inner wall of the flue to form a turbulent flow, part of the air flow can rebound to the valve body, so that the interference on the oil flue gas to be exhausted is caused, the oil flue gas is exhausted, part of the air flow can flow upwards and inwards after rebounding via the inner wall of the flue, and the oil fume exhaust of the householder above the air flow is influenced when the air flow is large. The air flow is discharged upwards in an inclined manner by the guide plate 11, and after the air flow obliquely impacts the flue wall, the air flow is vertically upwards in a short stroke, so that residents above the air flow cannot be influenced.

As shown in fig. 2 and 3, the hinge base 12 further 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 to make the sliding hinge base vertically move downwards, so as to drive the guide plate 11 to turn over, and is connected to the guide plate 11 through the connecting rod.

Further, the guide plates 11 are arranged in parallel up and down and are arranged in groups, the guide plates 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 sealed.

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 fireproof valve can be detachably connected, and cleaning and maintenance are facilitated.

Further, the executor outside is equipped with knob and scale, and when the executor was opened and shut at control valve piece 22, outside knob carried out synchronous revolution and is used for showing current valve piece 22's degree of opening and shutting.

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 at the front end of the valve body 21 and is used for monitoring the pressure of the front end of the valve body, namely the real-time oil smoke discharge 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 limit ring 222 is a correspondingly circular ring.

Further, a sealing rubber pad is disposed on the outer peripheral edge of the valve plate 221.

Preferably, the valve body 21 and the guide plate 11 are made of stainless steel with a thickness of 1mm, and the valve plate 221 is a stainless steel plate 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 sealing performance 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 attributes 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, and any reference signs in the claims are not to be construed as limiting the claims.

Claims

1. The kitchen flue closed fire-proof valve is characterized by comprising a flow guide structure (1), a closed valve (2) and a control structure (3), wherein the closed valve (2) is arranged between a flue vertical shaft and a range hood pipeline, the flow guide structure (1) is arranged at the rear end of the closed valve (2) and is positioned in the flue vertical shaft, and the control structure (3) is arranged outside the closed valve (2) and is connected with the closed valve (2);

the closed valve (2) comprises a valve body (21) and a valve plate (22), and the valve plate (22) is movably connected in the valve body (21); the flow guide structure (1) comprises a flow guide plate (11) and a fusing component, wherein the flow guide plate (11) is movably arranged in a valve body (21) and has an opening state and a closing state, 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 guide plate (11).

2. The kitchen flue closed fire damper as recited in claim 1, characterized in that: control structure (3) include executor, controller, pressure gauge and manometer pipe (31), executor and pressure gauge are connected with the controller, the executor is connected with valve block (22), the one end and the pressure gauge of manometer pipe (31) are connected, and the other end is connected on valve body (21), with valve body (21) inner chamber UNICOM to be located the front end of valve block (22).

3. The kitchen flue closed fire damper as recited in claim 1, characterized in that: the fusing component comprises a hinged support (12), a fusing piece (13) and a return spring (14), the hinged support (12) is arranged in the inner cavity of the valve body (21), the fusing piece (13) and the return spring (14) are arranged on the upper side and the lower side of the hinged support (12) respectively, and the guide plate (11) is connected with the hinged support (12).

4. The kitchen flue sealing fire-proof valve as claimed in claim 1, wherein: valve block (22) include valve plate (221) and spacing ring (222), valve plate (221) are connected in valve body (21) through the pivot, spacing ring (222) are established in the inner chamber of valve body (21), and under the closed condition, valve plate (221) and spacing ring (222) laminating.

5. The kitchen flue fire-proof sealing valve as claimed in claim 3, characterized in that: guide plate (11) are the folded plate, including water conservancy diversion section and horizontal segment, and under the open mode, the horizontal segment is in the horizontality, guide plate (11) are connected in valve body (21) rear end through the pivot, free bearing (12) swing joint is at the front side portion of guide plate (11).

6. The kitchen flue fire-proof sealing valve as claimed in claim 5, wherein: the hinged support (12) comprises a sliding hinged support and a connecting rod, and the sliding hinged support is arranged in a limiting groove in the inner cavity wall of the valve body (21) and is connected with the guide plate (11) through the connecting rod.

7. The kitchen flue fire-proof sealing valve as claimed in claim 6, wherein: the guide plates (11) are arranged in groups and connected to the same sliding hinged support through connecting rods, and in the closed state, the guide plates (11) are mutually attached to seal the inner cavity of the valve body (21).

8. The kitchen flue closed fire damper as recited in claim 1, characterized in that: the fusing temperature of the fuse link (13) is 150 ℃.

9. The kitchen flue closed fire damper as recited in claim 1, characterized in that: the valve body (21) is detachably connected to the flue through bolts.

10. The kitchen flue fire-proof sealing valve as claimed in claim 2, wherein: and a knob and scales are arranged outside the actuator.