CN206055731U - A kind of smoke-backflow-proof outlet housing for range hood - Google Patents

Abstract

The utility model discloses a kind of smoke-backflow-proof outlet housing for range hood, including the cover body of upper and lower opening, and two rotate the valve blocks that are connected with the cover body by rotating shaft respectively, and the valve block includes valve block main body, it is characterised in that：The top perimeter of the cover body is formed with the first groove of annular for containing sealing fluid, the top of the cover body also has the second groove for radially extending, the two ends of second groove are connected with first groove respectively, and the rotating shaft passes through the second groove and two ends are limited on the week side of boss wall of the cover body respectively；The periphery of the valve block main body is formed with the first valve block flange and the second valve block flange, and the first valve block flange is placed in first groove, and the second valve block flange is placed in second groove.

Description

A kind of smoke-backflow-proof outlet housing for range hood

Technical field

This utility model is related to a kind of outlet housing, especially a kind of smoke-backflow-proof outlet housing for range hood.

Background technology

With growth in the living standard, range hood is extensively applied in daily life, and present high-rise family Common flue is all employed in building typically, the oil smoke that the range hood of every household is discharged enters common flue from range hood Discharge from above house again afterwards, if air outlet for kitchen ventilator is poorly sealed, the oil smoke that may result in underlying User was being discharged The room of upper-layer user is entered in journey, or when blowing hard or air pressure is low, also occurs the oil smoke of upper strata resident family discharge under Layer resident family range hood air vent enter house in, produce air flue between mutually collaborate, the phenomenon of smoke blowing.

For this purpose, non-return valve block is usually provided with the outlet housing of existing range hood, common non-return valve block has two kinds： 1st, bivalve chip architecture, this structure have digging angle big (i.e. windage is little), taking the advantages such as superjacent air space is little for valve block；2nd, it is single Valve structure, this structure are relatively simple, but exist and dig angle little (windage is big), the shortcomings of compare occupancy superjacent air space. At present, above two structure all there is a problem that being not closed completely, that is, there is valve block outer ring close with air-out over body case inner ring Envelope problem, especially bivalve chip architecture also have the sealing problem between valve block and valve block, cause still to exist smoke blowing and fall cigarette Phenomenon；Further, since range hood has greasy residues on valve block and air-out cover body after use, and above two valve block knot Structure has directly contact with air-out cover body, as between valve block and air-out cover body, the long-term greasy dirt piled up can cause valve block and air-out Cover body adhesion so that lampblack absorber smoke evacuation is not smooth.

Also the scheme of the sealing problem of some non-return valve blocks of solution, such as Application No. are there has been in prior art A kind of sealing check valve disclosed in 98236951.4 Chinese patent, including the valve body with opening and two valves of rotation connection Piece, arranges the sealing ring of magnetic material or ferromagnetic material, magnetic material or ferromagnetic material at the opening seal perimeter of valve body Between two valve blocks, flexible sealing structure is set.This check (non-return) valve, the outer ring (outer edge) of its valve block and the sealing side of air-out cover body Formula is：Using fixed magnetic material sealing ring, by way of magnetic contact adhesive seal which, but range hood is being used During the oil smoke that condenses can form the very strong greasy dirt of viscosity, this will be such that valve block bonds with air-out cover body, the valve block of bonding without Method is blown afloat by air-out cover body will be such that the performance of lampblack absorber significantly declines, and affect smoke absorption effect；Additionally, two valve blocks it Between sealing employ the flexible materials such as filling sponge, crudefiber crop, it is clear that sponge, crudefiber crop and other items with good breathability, no Beneficial to sealing, and when adopting the flexible sheet materials such as leather, as the material of valve block is usually between irony steel plate, with leather Sealing connection process program is complicated, the poor reliability of long-term work in oil pollution environment.

A kind of and for example check-valves disclosed in the Chinese patent of Application No. 201410475152.7, the shell of the oil smoke check-valves Body is combination type, can be easily installed between lampblack absorber and exhaust opening, has two symmetrical backbar interfaces under housing on section, It is connected with turnover panel with backbar, turnover panel motion is that turnover panel is seamlessly connected as not with backbar single-freedom and flexible hinge A disassembled entirety, has a continuous sealant between locating surface on the sealing surface and housing on turnover panel edge, sealing The end face of layer is bonded together with the locating surface on housing, and other end and the turnover panel of sealant form dynamic sealing and contact Coupling surface is made by turnover panel surface configuration in face, dynamic sealing contact surface, and by turnover panel, accurately opening and closing movement completes dynamic sealing. This check-valves, its valve block outer ring with the sealing means of air-out cover body is：Contact surface between the two adopts half uncured liquid Body shape fluid sealant is fully contacted with air-out cover body, after its solidification forms sealing effectiveness, and valve block is contacted with sealant, on sealant Surface smear oil film is reducing viscosity between the two.The problem of this sealing means is：1) oil film is that oxidation to occur instead (generally the crying rotten) answered, during life-time service, its effect for reducing viscosity between the two can be worse and worse；2) it is solution Certainly adhesion problems of greasy dirt, its method are adjustment contact surface areas, but the adhesive strength of greasy dirt is unknown, and this is with edible oil The characteristics of characteristic, the frequency (usage cycles) cooked of user after species, heating, the size and species of flavoring agent amount, vegetable, culinary art Custom, the oils and fatss separating property of lampblack absorber, the air-out mode of blower fan system, the shape in air channel, external environment (temperature, humidity) etc. It is closely bound up, that is to say, that as long as there is contact, there is and glued the risk hidden danger that extremely causes valve block open；3) first use Semisolid makes the process engineering of its solidification excessively complicated again.Additionally, this check-valves, the sealing between valve block adopts flexible material, And flexible material generally rigidity is poor, and it is to realize sealing, the rigidity of its valve block is better again, so flexible material and rigidity Manufacturing process and Joining Technology between turnover panel is all very complicated.

Water-stop is a kind of sealing effectiveness preferably mode, such as in the Application No. 201310703970.3 of the applicant A kind of Anti-backflow smoke structure disclosed in state's patent, including housing, open-close cover and motor, housing have hollow cavity, and bottom has The Storage water tank of annular, the Storage water tank are located at said hollow inside cavities wall；Open-close cover can be arranged in housing simultaneously up or down Coordinate to reach water-stop with aforesaid Storage water tank；Motor is located in housing, for driving aforesaid open-close cover to move up and down.So And above-mentioned this Anti-backflow smoke structure, have the disadvantage that：1) whole device is arranged on the surface of outlet housing, takes up room big, Integration is poor；2) apparatus structure is complicated, and high cost is to solve the problems, such as greasy dirt adhesion valve block, employs motor-driven scheme, Its driving means is in oil circuit environment, fragile；3) to solve sealing problem, the patent is only with a valve block, and valve block is only Can move up and down, even if in opening, as its windage is larger, making range hood hydraulic performance decline, so as to reduce fume-exhausting Effect.

Utility model content

Technical problem to be solved in the utility model is the problem existed for above-mentioned prior art, there is provided a kind of manufacture The smoke-backflow-proof outlet housing for range hood of process is simple, good seal performance.

This utility model solve the technical scheme that adopted of above-mentioned technical problem for：A kind of smoke-backflow-proof for range hood Outlet housing, including the cover body of upper and lower opening, and two valve blocks being connected by rotating shaft and cover body rotation respectively, it is described Valve block includes valve block main body, it is characterised in that：The top perimeter of the cover body is formed with the annular for containing sealing fluid First groove, the top of the cover body also have the second groove for radially extending, the two ends of second groove respectively with it is described First groove is connected, and the rotating shaft passes through the second groove and two ends are limited on the week side of boss wall of the cover body respectively；It is described The periphery of valve block main body is formed with the first valve block flange and the second valve block flange, and it is recessed that the first valve block flange is placed in described first In groove, the second valve block flange is placed in second groove.

For avoid valve block and cover body directly contact and adhesion, cause valve block open, the first valve block flange and Two valve block flanges by the valve block main body stretch out certain distance, still further below bend and formed, the valve block main body is higher than The medial wall top of first groove.

To guarantee to there is enough gaps between valve block and cover body, directly contact is prevented, is set on the first valve block flange At least one float is equipped with, the float is placed in first groove.

For sealing is affected after avoiding sealing from evaporating, it is provided with the outside of the lateral wall of first groove and described first The liquid feeding groove of groove connection, is provided with transparent observation window on the liquid feeding groove.

To inform that user liquid is added to enough amounts in time, and the greasy dirt of liquid surface can be removed in time, it is described plus Liquid bath offers spillway hole away from the side of the first groove lateral wall, and the height of the spillway hole is equal to or less than in the first groove The top of side wall.

For ease of real-time monitoring liquid level, during so as under the amount of liquid needed for evaporateing into, user can be reminded, it is described It is provided with first groove for monitoring the sensor of liquid level.

To remind user adding liquid, the sensor to be connected to control chip in time, connect on the control chip There is buzzer.

To be automatically obtained the addition of liquid, inlet channel is provided with the liquid feeding groove, is provided with the inlet channel Electromagnetic valve, the sensor are connected to for controlling the control chip of electromagnetic valve.

Preferably, the sensor is static pressure type liquid level sensor or range sensor.

Preferably, the structure of cover body is that the cover body includes covers body and cover body flange, and the cover body flange is in cover body The top of main body radially outward bends certain distance and is folded upward at and is formed, thus the side wall and cover body flange of covers body First groove is collectively forming, the side wall of the covers body constitutes the medial wall of the first groove, and the cover body flange is upwards The part of bending constitutes the lateral wall of first groove.

To avoid valve block and rotating shaft relative movement, spacer is provided with the inside of the second valve block flange bending place, institute State, the rotating shaft is passed through from location hole.

Compared with prior art, the utility model has the advantage of：By between valve block and air-out cover body, valve block and valve block it Between adopt water-stop, when the sealing problem of valve block and cover body is solved, the sealing that can be solved between valve block and valve block simultaneously is asked Topic, sealing structure are simple, can prevent valve block and cover body adhesion again, so that it is guaranteed that valve block normally can be opened；Valve block and cover body it Between there is no directly contact, just do not exist between the two by viscous dead risk yet；The manufacturing process of valve block is simple, and operation is few, leads to Cross setting flange and can realize sealing, be avoided that valve block and cover body directly contact again.

Description of the drawings

Fig. 1 is the schematic diagram of outlet housing of the present utility model；

Fig. 2 is the cover body sectional view of one embodiment of outlet housing of the present utility model；

Fig. 3 is the schematic diagram of the valve block of one embodiment of outlet housing of the present utility model；

Fig. 4 is the valve block half-open position sectional view of one embodiment of outlet housing of the present utility model；

Fig. 5 is valve block half-open position sectional view (the filling sealing fluid of one embodiment of outlet housing of the present utility model Body)；

Fig. 6 is valve block closure state sectional view (the filling sealing fluid of one embodiment of outlet housing of the present utility model Body)；

Close-up schematic views of the Fig. 7 for the valve block closure state sectional view of Fig. 6；

Fig. 8 is the valve block closure state enlarged partial sectional view of second embodiment of outlet housing of the present utility model；

Fig. 9 is the valve block closure state enlarged partial sectional view of the 3rd embodiment of outlet housing of the present utility model；

Figure 10 is the valve block closure state enlarged partial sectional view of the 4th embodiment of outlet housing of the present utility model；

Specific embodiment

This utility model is described in further detail below in conjunction with accompanying drawing embodiment.

Referring to Fig. 1, a kind of smoke-backflow-proof outlet housing for range hood, including cover body 1 and two valve blocks 2, cover body 1 is in The tubular of upper/lower terminal opening, the bottom of cover body 1 are fixed for the top of the fan shroud with range hood, and two valve blocks 2 are closed At the top of cover body 1.

Referring to Fig. 2 and Fig. 4, cover body 1 includes covers body 11 and cover body flange 12, and cover body flange 12 is in covers body 11 Radially outward (preferred, to be level) bends certain distance and is folded upward at being formed on top, thus the side wall of covers body 11 The first groove 13 of annular is collectively forming with cover body flange 12.The side wall of covers body 11 constitutes the medial wall of the first groove 13, The part that cover body flange 12 is folded upward at constitutes the lateral wall of the first groove 13.

The top of covers body 11 is formed with the second groove 14, and the second groove 14 is located on the inside of the first groove 13, it is preferred that Second groove 14 through the center on 11 top of covers body, in the radially extending of 11 top of covers body, the second groove 14 Two ends are connected with the first groove 13 respectively.On the part that cover body flange 12 is folded upward at, it is corresponding with the two ends of the second groove 14 Position offers two blind holes 15 respectively, is fixed with rotating shaft 16 between two symmetrical blind holes 15, and rotating shaft 16 is from the second groove Pass through in 14, so that the two ends of rotating shaft 16 are limited in the week side of boss wall of the part that is folded upward at of cover body flange 12, i.e. cover body 1 On.A valve block 2 is supported by each rotating shaft 16.

Referring to Fig. 3～Fig. 7, valve block 2 includes valve block main body 21, the first valve block flange 22 and the second valve block flange 23, valve block 21 semicircular in shape of main body, the first valve block flange 22 are formed in the camber line edge of valve block main body 21, and the second valve block flange 23 is formed in The linear edge of valve block main body 21, the second valve block flange 23 and the first valve block flange 22 can be integrated.Second valve block flange 23 With the first valve block flange 22 by valve block main body 21 stretch out certain distance, still further below bend and formed, that is to say, that work as valve When piece 2 is closed, valve block main body 21 is higher than the second valve block flange 23 and the first valve block flange 22.The edge of valve block main body 21 is located at cover The outside on 11 top of phosphor bodies.

Rotating shaft 16 is supported on the bending place of the second valve block flange 23, and thus, valve block 2 16 can be rotated (such as institute in Fig. 4 around the shaft Being lifted up of showing opens outlet housing, or as shown in Figure 6 to the closing outlet housing that falls).To avoid 2 relative rotating shaft 16 of valve block from moving It is dynamic, spacer 231 is provided with the inside of 23 bending place of the second valve block flange, location hole 232, rotating shaft on spacer 231, is offered 16 pass through from location hole 232, and rotating shaft 16 is also passed through from the first valve block flange 22 near the two ends of the first valve block flange 23, Rotating shaft 16 and valve block 2 are thus defined in the position vertically and horizontally gone up, valve block 2 only can be rotated relative to rotating shaft 16.

The sections inner side of bending, outside or lower section are provided with least one float 24 to first valve block flange 22 downwards, and first The less liquid of viscosity, such as water, the first valve block flange 22 and the second valve block flange can be injected in groove 13 and the second groove 14 23 are immersed in the first groove 13 and the second groove 14 respectively.Thus, when the sealing problem between valve block 2 and cover body 1 is solved, The sealing problem between two valve blocks 2 is solved simultaneously.Further, since the effect of float, valve block 2 is floated up, thus valve block 2 Will not contact with covers body 11, between the top of valve block main body 21 and covers body 11, in the vertical direction there is gap H, the bottom of the first valve block flange 22 also will not be contacted with the bottom of the first groove 13, so as to avoid quilt between valve block 2 and cover body 1 Greasy dirt is viscous dead, it is ensured that valve block 2 can normally be opened and be closed.

As the water in the first groove 13 and the second groove 14 is volatile, range hood can produce oil in use Dirt, greasy dirt can be swum on the water surface, reduce the volatilization of water to a certain extent.In order to avoid the first groove 13 and the second groove Water in 14 be evaporated completely it is a certain amount of after lose sealing function, liquid feeding groove 17, liquid feeding are provided with the lateral wall of cover body flange 12 Groove 17 is connected with the first groove 13, can supplement water to the first groove 13 and the second groove 14.17 upper end open of liquid feeding groove, lower end seal Close, liquid feeding groove 17 is away from offering spillway hole 171, when adding water excessive, current on the side wall of cover body flange 12, on certain altitude Can overflow from spillway hole 171.Transparent observation window 172 is provided with below spillway hole 171, for observing liquid level position.Spillway hole 171 and observation window 172 water addition can be avoided excessive.Additionally, the height of spillway hole 171 is equal to or less than covers body 11 Top, when add water required amount when, unnecessary water can be overflowed from spillway hole 171, as greasy dirt is swum on the water surface, therefore, Greasy dirt can overflow first, so as to reach the purpose of oil stain.

Or, it is also possible to spillway hole 171 is not provided with, and now liquid level is observed by merely look at window 171, is worked as liquid level During higher than 11 top of covers body, the greasy dirt for swimming in liquid level surface can be flowed into inside covers body 11, eventually flow to greasy dirt In the lubricating cup of range hood, the purpose of oil stain can be also reached.

Embodiment two

Referring to Fig. 8, in the present embodiment, the difference with above-described embodiment one is that valve block 2 is not provided with float 24, now, The bottom of the first valve block flange 22 is contacted with the bottom of the first groove 13, as contact site is located in liquid, can equally be kept away Exempt from viscous dead by greasy dirt between valve block 2 and cover body 1.And as valve block main body 21 is higher than the second valve block flange 23 and the first valve block flange 22, now, between the top of valve block main body 21 and covers body 11, yet suffer from gap h.

Embodiment three

Referring to Fig. 9, in the present embodiment, the difference with above-described embodiment one is to be provided with sensing in the first groove 13 Device 131, for monitoring whether the water in the first groove 13 is reduced (volatilize), sensor 131 is connected to control chip 18, controls core Piece 18 is also associated with buzzer 19.

Sensor 131 can be static pressure type liquid level sensor, for the height of monitoring position of fluid level, can be arranged on liquid Internal optional position, that is, be arranged in the first groove 13 optional position of the spillway hole 171 less than liquid feeding groove 17, when under liquid level During drop, sensor 131 is by the signal transmission for detecting to control chip 18.

Or, sensor 131 can also be range sensor, for monitoring sensor and the first valve block flange 22 or float The distance between 24, now, sensor 131 is arranged on the second valve block flange.When the water in the first groove 13 is reduced, the first valve Piece flange 22 will sink, and sensor 131 is detected and diminished with the distance between the first valve block flange 22 or float 23, thus instead Feed control chip 18.

Thus, when liquid level drops below 18 default threshold value of control chip, control chip 18 starts buzzer 19 and reports It is alert, remind user to need suitably to add water.

Example IV

Referring to Figure 10, in the present embodiment, the difference with above-described embodiment three is to be provided with water inlet pipe on liquid feeding groove 17 Road 20, is provided with electromagnetic valve 201 on inlet channel 20, control chip 18 is used to control electromagnetic valve 201.

When needing to add water, the control electromagnetic valve 201 of control chip 18 is opened, and is noted into liquid feeding groove 17 by inlet channel 20 Water, when liquid level rises to meet the requirements, sensor 131 feeds back to control chip 18, stops adding so as to close electromagnetic valve 201 Water, wherein arrow are shown into water direction.

Claims (11)

1. a kind of cover body (1) of smoke-backflow-proof outlet housing for range hood, including upper and lower opening, and two pass through respectively Rotating shaft (16) rotates the valve block (2) being connected with the cover body (1), and including valve block main body (21), its feature exists the valve block (2) In：

The top perimeter of the cover body (1) is formed with the first groove of the annular (13) for containing sealing fluid, the cover body (1) top also has the second groove (14) for radially extending, and the two ends of second groove (14) are recessed with described first respectively Groove (13) is connected, and the rotating shaft (16) is through the second groove (14) and two ends are limited in the week side of boss of the cover body (1) respectively On wall；

The periphery of the valve block main body (21) is formed with the first valve block flange (22) and the second valve block flange (23), first valve Piece flange (22) is placed in first groove (13), and the second valve block flange (23) is placed in second groove (14).

2. the smoke-backflow-proof outlet housing of range hood is used for as claimed in claim 1, it is characterised in that：The first valve block flange (22) and the second valve block flange (23) by the valve block main body (21) stretch out certain distance, still further below bend and formed, Medial wall top of the valve block main body (21) higher than first groove (13).

3. the smoke-backflow-proof outlet housing of range hood is used for as claimed in claim 1, it is characterised in that：The first valve block flange (22) at least one float (24) is provided with, the float (24) is placed in first groove (13).

4. the smoke-backflow-proof outlet housing for range hood as any one of claims 1 to 3, it is characterised in that：It is described The liquid feeding groove (17) connected with first groove (13), the liquid feeding groove are provided with the outside of the lateral wall of the first groove (13) (17) transparent observation window (172) is provided with.

5. the smoke-backflow-proof outlet housing of range hood is used for as claimed in claim 4, it is characterised in that：The liquid feeding groove (17) is remote Spillway hole (171) is offered from the side of the first groove (13) lateral wall, the height of the spillway hole (171) is equal to or less than the The top of one groove (13) medial wall.

6. the smoke-backflow-proof outlet housing of range hood is used for as claimed in claim 4, it is characterised in that：First groove (13) Inside it is provided with for monitoring the sensor (131) of liquid level.

7. the smoke-backflow-proof outlet housing of range hood is used for as claimed in claim 6, it is characterised in that：The sensor (181) Control chip (18) is connected to, on the control chip (18), buzzer (19) is connected with.

8. the smoke-backflow-proof outlet housing of range hood is used for as claimed in claim 6, it is characterised in that：On the liquid feeding groove (17) Inlet channel (20) is provided with, electromagnetic valve (201) on the inlet channel (20), is provided with, the sensor (181) is connected to For controlling the control chip (18) of electromagnetic valve (201).

9. the smoke-backflow-proof outlet housing of range hood is used for as claimed in claim 6, it is characterised in that：The sensor (131) For static pressure type liquid level sensor or range sensor.

10. the smoke-backflow-proof outlet housing for range hood as any one of claims 1 to 3, it is characterised in that：It is described Cover body (1) includes covers body (11) and cover body flange (12), and the cover body flange (12) is in the top footpath of covers body (11) To outward bending certain distance and it is folded upward at and is formed, thus the side wall of covers body (11) and cover body flange (12) is common First groove (13) is formed, the side wall of the covers body (11) constitutes the medial wall of the first groove (13), the cover body The part that flange (12) is folded upward at constitutes the lateral wall of first groove (13).

The 11. smoke-backflow-proof outlet housings for being used for range hood as claimed in claim 10, it is characterised in that：Second valve block is convex Spacer (231) is provided with the inside of edge (23) bending place, location hole (232) on the spacer (231), is offered, described turn Axle (16) is passed through from location hole (232).