CN116104969A

CN116104969A - Windproof exhaust hood

Info

Publication number: CN116104969A
Application number: CN202111322653.8A
Authority: CN
Inventors: 刘玉建
Original assignee: Dalian Yujian Technology Co ltd
Current assignee: Dalian Yujian Technology Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2023-05-12

Abstract

The invention relates to a wind-proof exhaust hood for an outdoor exhaust outlet, which can also be used for an indoor public exhaust passage inlet. The valve seat is mainly composed of a valve seat (15) and a conical valve (11), a hinge is arranged at the upper end of the valve seat (15), a groove type valve sealing surface (18) and a groove type seat sealing surface (17) are sealed in a full circle, a semicircular wind shield (10) extends out of a lower semicircle in front of the valve seat (15), the shape of the conical valve at the lower half part is changed, and a W-shaped valve is arranged in the process of sweeping transverse wind; the longitudinal wind sweeps the shape of the 'F' valve, and other wind directions are alternately changed between the 'W' valve and the 'F' valve, so that the phenomenon of pressure reduction can not happen any more, the structure can ensure that the valve is stuck on the valve seat in a thread-like manner, the valve is closed in any weather, the noise of the valve flapping caused by wind is avoided, and the problem that people cannot solve for a long time is solved.

Description

Windproof exhaust hood

Technical Field

The invention relates to an outlet windproof non-return device for outdoor exhaust, in particular to a windproof and backflow-preventing non-return device for an exhaust pipe outlet of a range hood.

Background

The device for the outlet of the outdoor exhaust needs to have two functions, namely unobstructed exhaust; secondly, can in time seal the export after the exhaust, prevent cold and hot air from getting into indoor. However, since the outlet is exposed outdoors, when the valve is depressurized by strong wind and covered at the outlet of the exhaust pipe in bad weather, the valve is opened by wind, and as a result, the valve is repeatedly flapped to the valve seat, so that not only is the sealing disabled, but also the valve is easily damaged due to intolerable noise, so that the problem is a worldwide problem (the problem is that a simple method cannot be solved), and the problem cannot be solved, so that the kitchen ventilator has no check valve at the outlet of the kitchen ventilator to the outdoor, only can open the port, seriously influences the indoor heat preservation in winter, and prevents flies and mosquitoes from entering and closing the indoor air conditioner in summer. The present inventors studied about this problem for thirty years, and have not completely solved this problem from patent number 902092650 to patent number 201010259548X. The check valve of the range hood with the patent number 201010259548X adopts a conical valve structure, and the external shape of the check valve has the function of balancing internal and external pressures, but the lower part of the check valve still can cause the conical valve with radian to generate decompression phenomenon under the action of transverse wind or other wind directions, so that the check valve can not be completely stationary.

The existing double-vane check valve arranged on the range hood is basically useless because the vicinity of the impeller is easy to be stuck by oil and has no reliability, so that the check valve is required to be installed at the outlet of an exhaust pipe far from the range hood whether the exhaust is carried out outdoors or carried out indoors. However, the outdoor exhaust outlet is practically usable without an exhaust cover, and most of the check valves of the indoor exhaust outlet are double-leaf valves on the range hood are moved to the exhaust outlet, and the check valves are closed in a spring mode under the condition of no gravity action, so that the complexity of the mechanism is caused, and the reliability is difficult to ensure.

Disclosure of Invention

The invention aims to provide a wind-proof exhaust hood (valve) which can completely keep the valve still in a static state in windy weather, is smooth in exhaust, is reliably closed and static in closing, can be used for an inlet of an indoor public exhaust passage, and can prevent exhaust gas of other people from flowing backwards.

Disclosure of Invention

A windproof fume-exhausting hood is mainly composed of a valve seat (15) and a valve, wherein the valve seat (15) is provided with a groove-type seat sealing surface (17), the center line of the seat sealing surface (17) is downwards shifted by a corresponding distance relative to the center line of the valve seat (15), the upper end of the valve seat (15) is provided with a hinge hole (8), the valve (11) is provided with a hinge shaft (7), the two are connected to form a hinge, the edge of the conical valve (11) or the spherical valve is provided with a flanging to form a 360-degree groove-type valve sealing surface (18), the groove-type valve sealing surface (18) is matched with the groove edge of the groove-type seat sealing surface (17), the groove-type valve sealing surface and the groove-type seat sealing surface are sealed in a 360-degree range, a semicircular wind shield (10) is stretched out from the lower semicircular position in front of the valve seat (15), and a drainage groove (12) is arranged at the lowest end of the semicircular wind shield (10).

The hinge hole (8) at the upper end of the valve seat (15) is formed by connecting a rear hinge hole seat (9) and a front hinge hole seat (6) on the valve seat (15) through screws.

A circular pipe A connecting pipe (24) is arranged on the outermost ring of the rear surface of the valve seat (15), a circular D connecting pipe (21) is arranged on the innermost ring, two upright post type connecting pipes with different diameters are arranged between the A connecting pipe (24) and the D connecting pipe (21), a plurality of B upright posts (23) and a plurality of C upright posts (22) are arranged on tracks with different diameters, and the plurality of B upright posts (23) and the plurality of C upright posts (22) are arranged in a staggered manner and stand on the tracks with different diameters for supporting and positioning exhaust pipes with different diameters.

The invention has the technical effect that the semicircular wind shield extends out of the lower semicircle in front of the valve seat, so that the problem of opening the air passing valve can be thoroughly solved. The principle is that no matter what shape of the valve (the whole valve with a hinge is arranged at the upper end of the valve seat), the valve (taking a conical valve as an example) with the center line of the valve being deviated to one side of the hinge above the valve is fixed by the hinge after strong wind sweeps, and the conical valve at the upper half part cannot generate the possibility of passive valve; the valve at the lower half part is far away from the limit of the hinge due to the limitation of no fixed object, and the tapered valve with the pressure reducing function has a certain radian, so that the phenomenon of opening the valve due to wind passing can still occur. Therefore, the semicircular wind shield is arranged at the edge of the valve at the lower half part, which is equivalent to changing the shape of the conical valve at the lower half part, and the shape of the W-shaped valve is changed in the process of sweeping transverse wind; the longitudinal wind sweeps through an 'F' valve shape, and other wind directions are alternately changed between the 'W' valve shape and the 'F' valve shape, so that the phenomenon of pressure reduction can not happen any more, the structure can ensure that the valve threads are fixedly attached to the valve seat, the valve is closed in any weather, the noise caused by wind is avoided, and the problem which cannot be solved by people for a long time is solved by a simplest method.

The structure that the drain tank is arranged at the lowest point of the wind shield can further (the inner ring of the concave-convex seal groove of the valve is equivalent to a step) avoid the possibility of entering rainwater into the exhaust pipe due to the installation of the wind shield, and even if the rainwater is discharged instantaneously.

The hinge hole on the valve seat is divided into a rear hinge hole seat and a front hinge hole seat which are integrated with the valve seat, and the front hinge hole seat is connected on the rear hinge hole seat through a screw to form the structure benefit of the hinge hole is that: firstly, the hinge shaft can be thickened and lengthened, so that the strength is improved (the hinge of the plastic part with the structure is generally fixed through the hinge hole, and then the shaft is extruded by the elasticity; and secondly, after the hole is matched with the shaft, the friction force can be increased by a large area, and the matching of the hinge and the hinge seat can be adjusted at will by utilizing the friction force: when the valve is required to be kept in an open state under the condition of good weather, the hinge seat can be tightly regulated to a small extent, and the friction force is increased, so that the valve can not be directly closed by gravity after being opened, and the open state is kept; under the condition that the weather is bad, the wind is slightly acted by external force, and the wind can automatically close against the friction force at that point; when the valve is used at the inlet of the indoor exhaust passage, the hinge seat can be adjusted loosely, the hinge can be freely moved, the free rotation of the hinge can be kept, and the valve can be automatically closed by gravity after being opened.

The two column type connecting pipes with different diameters are arranged between the A connecting pipe and the D connecting pipe behind the valve seat, so that the column type connecting pipe adopts a staggered arrangement method, two enclosing walls of the A connecting pipe and the D connecting pipe are ingeniously utilized, and the other two connecting pipe setting spaces are arranged, so that the valve has the structure of four standard connecting pipes. The column type connecting pipe principle is that the column B or the column C plays a supporting and positioning role, and then is wrapped (sleeved) by glass cement or foam; the glass cement or foam bearing is arranged in the valve seat, so that the connection and fixation effects of the exhaust pipe and the valve seat are achieved. Therefore, the structure not only meets the requirements of connecting four pipes with different specifications in a limited space, but also fully utilizes the functions of the pipe clamp replaced by the existing glue and foam technology, and is sealed and connected reliably under the condition that the cost is not increased. The column is equivalent to steel bar, glue and foam concrete, and the reinforced concrete structure is used for connecting the pipe and the seat.

The gravity center of the valve is kept in front by adopting the conical valve or the spherical valve, so that the gravity always presses the valve in front when the valve is closed, the valve is a simplest structure which does not need the acting force of a spring for closing the valve and always has a pressure effect to tightly close the valve when the valve is automatically closed and in a static state; the hinge of the valve is arranged above and is arranged at a place beyond the sealing surface, so that the valve is integrally formed into a large sail, and the maximum force arm can reach the large diameter, therefore, the opening acting force (exhaust pressure) is far greater than that of a double-leaf valve by several times, and the reliability is ensured absolutely. Therefore, the windproof exhaust hood with the windproof function is not only suitable for outdoor exhaust, but also suitable for a check device for indoor exhaust to the inlet of the exhaust passage, and has the advantages of reliably preventing the phenomenon that a plurality of common exhaust passages flow backwards due to common exhaust passages, and ensuring the sealing and reliable effects due to the structure.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic illustration of the present invention;

FIG. 2 is a schematic view of another aspect of the present invention;

fig. 3 is a schematic view of four exhaust pipe joints provided for the valve seat.

In the figure: 1. screw hole, 2 connecting plate, 3, gag lever post, 4, inclined plane, 5, two rocking arms, 6, preceding hinge seat, 7, hinge pin, 8, hinge hole, 9, back hinge seat, 10, deep bead, 11, conical valve, 12, water drainage tank, 13, boss, 14, flat panel, 15, valve seat, 16, fixed orifices, 17, seat sealing face, 18, valve sealing face, 19, trapezoidal pad, 20, screw, 21, D take over, 22, C stand, 23, B stand, 24, a take over.

Detailed Description

Referring to fig. 1, a valve seat (15) is provided with a rear hinge hole seat (9), and the rear hinge hole seat (9) is provided with half hinge holes; the front hinge hole seat (6) is provided with half hinge holes, the screw holes (1) are arranged on the front hinge hole seat, and the front hinge hole seat (6) is fixed on the rear hinge hole seat (9) through screws to form the whole hinge hole (8); or a U-shaped hinge hole (8) is arranged on the rear hinge hole seat (9); the front hinge hole seat (6) is a flat cover plate and is connected through screws. The double rocker arms (5) are connected with a connecting plate (2) with the same radian as the conical valve (11), the upper ends of the double rocker arms (5) are connected with a limiting rod (3) for limiting the opening of the conical valve (11), an opening inclined plane (4) for limiting the conical valve (11) is arranged on a valve seat (15) to prop against the limiting rod (3) to achieve the limiting effect, so that the conical valve has proper opening, and particularly when the high wind is exhausted, the conical valve (11) can decompose forward wind power to ensure normal exhaust; the back of the connecting plate (2) is provided with a hole which can use self-tapping screws, the conical valve (11) is provided with screw holes, the screws (20) are connected with the connecting plate (2) through a trapezoid pad (19) (see figure 2), and the connection can be also enhanced through glue; the upper end of the double rocker arm (5) is provided with a hinge shaft (7) with a length and a corresponding diameter, and the installation procedure is that after the rear hinge hole seat (9) provided with half hinge holes is installed, the front hinge hole seat (6) is covered to form a hinge. The tightness of the hinge with the structure can be adjusted by screws to meet different requirements of users (see beneficial effects); the semicircular wind shield (10) extends out of the lower semicircle in front of the valve seat (15), two end points of the wind shield (10) are arranged on the horizontal center line of the conical valve (11), the lower half part of the conical valve (11) can be completely shielded, a W-shaped curved surface is formed in the lateral direction, an F-shaped curved surface is formed in the longitudinal direction, the arc shape of the conical valve (15) is damaged, the conical valve (11) cannot be depressurized after wind passes, and the structure is also applicable to a spherical valve; a groove-shaped drainage groove (12) is formed at the lowest end of the semicircular wind shield (10), so that rapid drainage is facilitated; the edge of the plane (14) with the extended (enlarged diameter) on the valve seat (15) is provided with a convex boss (13) which can enlarge the diameter in the largest range, which is beneficial to reducing the overhanging area (reduced diameter) of the plane plate (14), and the whole volume is reduced relatively, namely, the boss (13) is provided with a fixing hole (16) for fixing the screw to the farthest position far away from the exhaust pipeline hole, so that the fixing is safe and reliable; the plane plate (14) of the valve seat (15) can be stuck and fixed on the plane such as glass with holes of the window through nail-free glue.

Referring to fig. 2, the outermost edge of the rear end of the valve seat (15) is provided with an exhaust pipe circular pipe A connecting pipe (24), the valve seat (15) is provided with a groove type seat sealing surface (17), the center line of the seat sealing surface (17) moves downwards relative to the center line of the valve seat (15) to a corresponding position, and the position for arranging the hinge seat (9) is reserved by the action of the valve seat sealing surface, so that the hinge is arranged at a place other than the valve sealing surface. The importance is that the conical valve (11) is guaranteed to be closed in a full circle within a 360-degree range, which is a problem that many check valves of range hoods cannot solve, and the tightness is improved; the semicircular wind shield (10) is arranged on the outer ring of the groove type seat sealing surface (17); the stainless steel conical valve (11) is formed by stamping a stainless steel plate, a groove type flanging is arranged at the edge of the stainless steel conical valve to form a 360-degree valve seal (18), the valve seal surface (18) is matched with the inner edge and the outer edge of a groove of the groove type seat seal surface (17) to form an air pressure reducing device, the groove type seat seal surface (17) is provided with a plane and two side surfaces, and the three surfaces are matched with the three surfaces of the groove type seat seal surface (17) in a fitting mode, so that a reliable sealing effect can be achieved.

Referring to fig. 3, in order to connect exhaust pipes with different diameters with the valve seat (15), it is preferable to provide four kinds of connection pipes with different diameters on the valve seat (15), but because the diameters of the exhaust pipes with different standards are similar, the four kinds of connection pipes are not arranged at all and cannot be arranged at the same time. Therefore, the invention arranges a common circular pipe A connecting pipe (24) at the outermost ring, a common circular D connecting pipe (21) at the innermost ring, and two column-shaped 'connecting pipes' of exhaust pipes with different diameters are arranged between the two column-shaped 'enclosing walls' of the A connecting pipe (24) and the D connecting pipe (21), wherein the 'connecting pipes' are actually provided with a plurality of B columns (23) and a plurality of C columns (22) on two tracks with different diameters, the B columns (23) and the C columns (22) can be mutually staggered in arrangement, namely, the thinner columns (23) and the C columns (22) can not be extruded together in a structure of alternately standing at intervals on a radius line, so that the problem of insufficient space is solved by using the arrangement in different spaces. A circle of B columns (23) can support (be inserted into) the inner diameter of an exhaust pipe with one diameter; a plurality of C-shaped columns (22) can support the inner diameter of the exhaust pipe with another diameter. After the exhaust pipe with the corresponding diameter is inserted into the column type connecting pipe, the exhaust pipe with the corresponding diameter is enclosed between the A connecting pipe (24) and the cylindrical enclosing wall of the D connecting pipe (23), and finally, the space in the cylindrical enclosing wall can be filled with glass cement or foam, so that the outer diameter of the exhaust pipe can be wrapped and the inner diameter of the exhaust pipe can be supported, and the effect is that the positioning support of a plurality of B upright posts (23) or a plurality of C upright posts (22) and the steel bar is provided, the glass cement or foam is wrapped (sleeved) outside, and the support of the glass cement or foam is also provided inside, thereby achieving the connecting sealing effect of the exhaust pipe and the valve seat (15). Therefore, the structure not only meets the requirement of connecting four pipes with different specifications in a limited space, namely, the valve seat (15) can be inserted into any (only exhaust pipes with four standard diameters) exhaust pipe for use, but also obtains more reliable connection than a pipe clamp, and is superior to the conventional connection mode of connecting pipes and sockets.

Claims

1. A windproof fume-exhausting hood mainly comprises a valve seat (15) and a valve, wherein the valve seat (15) is provided with a groove-type seat sealing surface (17), the center line of the seat sealing surface (17) is downwards shifted by a corresponding distance relative to the center line of the valve seat (15), the upper end of the valve seat (15) is provided with a hinge hole (8), the valve (11) is provided with a hinge shaft (7), the two are connected to form a hinge, the edge of the conical valve (11) or the spherical valve is provided with a flanging to form a 360-degree groove-type valve sealing surface (18), the groove-type valve sealing surface (18) is matched with the groove edge of the groove-type seat sealing surface (17), and the groove-type valve sealing surface (18) and the groove-type seat sealing surface (17) are sealed in a full circle within a 360-degree range, and the windproof fume-exhausting hood is characterized in that a semicircular wind shield (10) is stretched out from the lower semicircle in front of the valve seat (15).

2. A smoke-preventing and exhausting hood according to claim 1, wherein the lowest end of the semicircular wind shield (10) is provided with a drainage groove (12).

3. A smoke-preventing and exhausting hood according to claim 1, wherein the hinge hole (8) at the upper end of the valve seat (15) is formed by connecting the rear hinge hole seat (9) and the front hinge hole seat (6) on the valve seat (15) through screws.

4. A smoke-proof hood according to claim 1, characterized in that the rear outer-most ring on the valve seat (15) is provided with a circular pipe a connecting pipe (24), the inner-most ring is provided with a circular D connecting pipe (21), two kinds of upright post type 'connecting pipes' with different diameters are arranged between the a connecting pipe (24) and the D connecting pipe (21), the 'connecting pipes' are provided with a plurality of B upright posts (23) and a plurality of C upright posts (22) on tracks with different diameters, and the tracks with the different diameters are used for supporting and positioning exhaust pipes with different pipe diameters by arranging the plurality of B upright posts (23) and the plurality of C upright posts (22) in a staggered manner.