CN1052297C

CN1052297C - Range hood

Info

Publication number: CN1052297C
Application number: CN 93100778
Authority: CN
Inventors: 柏村桂一
Original assignee: Fuji Industrial Co Ltd
Current assignee: Fuji Industrial Co Ltd
Priority date: 1992-09-18
Filing date: 1993-01-21
Publication date: 2000-05-10
Anticipated expiration: 2013-01-21
Also published as: MY119983A; GB2270638A; CN1084263A; GB9219823D0; GB2270638B

Abstract

A range hood comprises a housing of generally triangular cross section with an open front bridged by a removable metal filter 2 and enclosing an extractor fan 13 which draws air through the filter to an upper outlet space 18. A metal shield 4 in front of the filter defines with the housing an inlet gap extending above and to each side of the shield. Shield 4 catches oil dripping from the filter and directs it to oil pan 5. Duct 24 delivers any oil caught in fan casing 12 to pan 5. The shield 4 is shown as fixed, but it can be pivotally mounted. In a fusible link and a tension spring enable the shield to close against the filter in the event of fire, also stopping the fan 13 and sounding an alarm. In a motor driven screw pivots the shield in the event of fire or when fan 13 is switched off.

Description

Hood

The present invention relates to hood cigarette, stink and burning gases, that be used for indoor exhaust or outdoor exhaust that tops such as a kind of gas range that is arranged on the kitchen, electric stove are taken place when drawing the cooking.

The hood type known to people are general is that thereby portion's opening part is equipped with the dark shape cover main body that header board forms locking in front and before the casing of lower aperture, and its primary air fan device then is housed in this main body.As for example real public clear 63-15711 communique of having of this class known example.

Specifically, thereby by the backboard of the hood main body of lower aperture and left side plate lower plate being set up fixes, front end by lower plate inserts frame and installs filtration members with the filtration members below the sky plate that is contained in the hood main body again, and constitute spatial portion jointly by the backboard of this filtration members and lower plate and main body, left side plate, day plate, ventilating device is just accommodated and is arranged in this space.

Yet, although such hood is installed on gas range or the electric stove, if but be provided with under the lower situation of the ceiling in place (flat-top within doors), or when this hood is installed in the downside that hangs cupboard, side lower part will brush up against cooking people's head before being the side plate of left and right sides rectangle in the hood main body, thereby exists the problem of bringing obstruction to the kitchen operation.

In addition, in above-mentioned hood, the filtration members integral body that is arranged on suction inlet the place ahead of ventilating device is downward face peristome under the hood main body, generally speaking, its suction force can involve whole lower aperture portion when ventilating device moves, owing to be provided with the suction inlet (bellmouth) of ventilating device in the approximate centre position of opening, the suction of its open centre vicinity act as well, but the suction effect at edge of opening place has just reduced, and has therefore produced cigarette, stink and burning gases capture less than in the hood and near the problem that drains to outside the hood thereby remain in the flat-top within doors etc.This arresting efficiency is not only relevant with the performance of hood, but also relevant with such something, while promptly the rises tendency that spreads to left and right direction such as the burning gases that the cooking time is taken place on kitchen range, cigarette is very serious.

Moreover contained lubricant component is attached by filtration members and is recovered on this filtration members in the oil smoke that is taken place during the cooking, but only adopts operation such as cleaning to be difficult to remove easily attached to the grease on this filtration members.Owing to this reason, present situation is that this filtration members is used till the function damage always at present, or changes a new filtration members in due course.In addition, because the filtration members that is attached with grease is to expose opening part below the hood main body, therefore when the cooking, produce under the situation of fire just in case have fire to be caused in the gratin, the flame of upwards scurrying from this chamber gratin will touch filtration members, thereby exists the danger that causes fire.

U.S. Patent No. 5,069,197 disclose a kind of hood, and it has antetheca, can observe the interior clean level of cover by this antetheca; Fan is arranged in the cover, and the motor setting outside the cover; Also to make water or detergent solution in order to remove oil content; Removed oil content at first is collected in water or detergent solution, then, is transported to the reservoir of top, in the process that falls, be sucked out hood with the pumping loop; Water or detergent solution can easily be eliminated the flame that enters hood.Therefore, this United States Patent (USP) does not solve problems of the prior art yet.

The present invention produces in order to solve above-mentioned the problems of the prior art, its objective is to provide a kind of can be effectively introducings such as rising burning gases that taken place on the kitchen range of kitchen and cigarettes and capture the hood that goes to the ventilating device.

Even another object of the present invention is to provide a kind of being set at also can not bring the hood of any obstruction to cooking operation nearby near gas range or electric stove.

Moreover other purpose of the present invention provides a kind of can be easily the cleaning and can be to attached to the grease on the filtration members and waved the grease that gets off by ventilating fan and easily reclaim the hood of removing filtration members.

Again, thus a further object of the present invention is will provide a kind of can separate filtration members surface and flame the anti-hood that terminates in possible trouble of fire when gratin is scurried this abnormal conditions at flame.

In order to achieve the above object, hood of the present invention comprises by backboard, day plate and left side plate is constituted, the hood main body of the rectangular in essence triangle of side view and front openings; Metal filtration spare be configured in this opening part in removable mode is characterized in that: above-mentioned filtration members opening in the face of this main body in aforementioned body is provided with; Be contained the ventilating device that is disposing in the spatial portion that in this main body, forms by metal filtration spare institute zoning; According to becoming the mode of certain intervals to be contained in the place ahead and can to cover this filtration members with the surface of above-mentioned metal filtration spare, and between the left side plate that constitutes the hood main body and day plate the formation of energy zoning suck the metal shield in gap surely; Be configured in hood main body inner bottom part, can be to the oils trap that reclaims attached to the grease channeling conduct in metal filtration spare and the ventilating device; Above the exhaust outlet that links to each other with the discharge opening of above-mentioned ventilating device is set at the sky plate of hood main body.

In addition, above-mentioned shield constitutes by following mode, promptly rotatably supporting the bottom that is positioned under the filtration members lower edge side on the fixation side parts of hood main body comprising, opening and closing automatically by the mechanical driving mechanism of tension force that utilizes coil spring or motor revolving force.

Again, the detecting sensor and the warning buzzer that can detect out the abnormal high temperature or the condition of a fire are housed on above-mentioned hood main body, the detecting mutually interlock unusually and move of this alarm buzzer and detecting sensor.In addition, as above-mentioned detecting sensor can the serviceability temperature fuse, this temperature fuse is assembled between the top of the top anterior position of hood main body and rotatable shield, the spring that installing impels this shield to move towards the locking direction on shield and the fixation side parts that comprise the hood main body simultaneously, along with detecting of abnormal temperature, shield can automatically close.As the listed temperature sensor of above-mentioned detecting sensor, gas sensor etc.

Moreover, when utilizing the driving mechanism of this machinery of motor, then be to carry out interlock and carry out on-off action with the console switch that makes the ventilating device running, stop as the mechanism of the on-off action of carrying out above-mentioned shield.

According to above-mentioned means, the rectangular basically triangle of the side switch of hood main body, the cooking operator who stands in the hood forward lower part can not be subjected to the obstruction of hood main body left side plate, thereby guarantees enough working spaces.Then, although the shape of the left side plate on the hood main body basically at right angles triangle thereby side to surround part smaller, but therefore and the oil smoke that produces can solve by following approach towards the problem that spills of left and right sides direction, promptly go out one by zoning between the left and right sides lateral margin of the left side plate of hood main body and shield and suck the gap and other part crested plates encase and obtain such effect: the suction wind speed that is produced in the above-mentioned suction gap becomes big, the capture effect of hood main body circumference is improved, and just significantly reduces so phenomenon is omitted in the capture of oil smoke.

Again, contained grease is attached by metal filtration spare the time on this filtration members in the oil smoke, grease under being waved by fan is introduced into along the back side of shield from the fan casing of ventilating device and is recycled to the oils trap that is configured in the hood bottom part body, this oils trap can take out from the hood main body, and the grease that is reclaimed can be disposed easily.

Moreover, be located at that in a single day detecting sensor in the hood main body detects that unusual temperature rises or when having fire to occur causing into abnormal temperature in the gratin, the warning buzzer can produce action and this danger situation is informed the user.In addition, when above-mentioned shield was the open and close type occasion of fore-and-aft direction rotation, just along with above-mentioned detecting sensor makes shield and this detect interlock mutually to detecting of abnormality, and then locking filtration members surface was to reach the purpose that prevents fire development.

Again, above-mentioned shield is when being opened and closed by the mechanical driving mechanism that utilizes revolution, and the action by making this driving mechanism and the running of pressure fan, the console switch that stops to interrelate and just can realize automatic shutter.Yet, under this occasion, the exhaust of oil smoke, burning gases is to carry out in the mode of exhaust outside the room, when not using hood, constitute face with the filtration members of indoor contact mouth by locking, thereby can prevent that outer gas and noise outside the room from flowing into indoor by hood.

Embodiment

Below, will come with reference to the accompanying drawings embodiments of the invention are illustrated.

Fig. 1 is the longitdinal cross-section diagram that has shown the 1st embodiment of hood of the present invention.

Fig. 2 is the local sectility front elevation of Fig. 1.

Fig. 3 is that (3)-(3) line along Fig. 1 cuts enlarged cross section figure.

Fig. 4 is the enlarged cross section figure that (4)-(4) line along Fig. 2 cuts.

Fig. 5 is the longitdinal cross-section diagram that has shown the 2nd embodiment of hood of the present invention.

Fig. 6 is the longitdinal cross-section diagram that has shown the 3rd embodiment of hood of the present invention.

Fig. 7 is the expanded view of mechanical driving mechanism shown in Figure 6.

Fig. 1 to Fig. 4 has shown the cyclical patterns of indoor exhaust.1 is the hood main body among the figure, and 2 is filtration members, and 3 is ventilating device, and 4 is shield, and 5 is the oils trap.

Hood main body 1 comprises rectangular backboard 1a, day plate 1b, rectangular leg-of-mutton left side plate 1c basically, it be made into front openings, the slightly rectangular leg-of-mutton shape in side.The front end of it plate 1b is equipped with protecgulum 1d, and is become the resettlement section 6 of Switch and illuminating lamp by zoning, and the front is provided with the running of ventilating device 3, stops and the change-over switch of rotary speed, and be provided with the shift knob 8 of illuminating lamp 7 in the resettlement section.

Again, front under the backboard 1a on the above-mentioned hood main body 1, flatly to fix base plate 9 highlightedly towards the mode in the place ahead, the left and right sides of this base plate 9 is fixed on the left side plate 1c, and the front side of base plate 9 is bent upwards, and is then forming the insertion section 10 of edge under the energy support metal filtration members 2 at its front end.

Before the sky of hood main body 1 plate 1b below the side, carriage 11 is installed with metal filtration spare 2 in removable mode according to being fixed with mode that above-mentioned base plate 9 insertion sections 10 are faced mutually between the insertion section of this carriage 11 and above-mentioned base plate 9.

The ventilating device 3 that is installed with of accommodating is made of fan casing 12, fan 13 and motor 14 in the space that is formed by the backboard 1a of hood main body 1, day plate 1b, left side plate 1c and base plate 9 and 2 zonings of filtration members.In the front of fan casing 12 the bellmouth parts are housed, thereby form suction inlet.The discharge opening 16 of fan casing 12 is connected on exhaust chamber 18 (it is that zoning forms by establishing dividing plate 17 at bogie side frame within the sky of the hood main body 1 plate 1b).Then, on day plate 1b that brushes up against face on this exhaust chamber 18, offering many steam vents 19, thereby forming to indoor exhaust.

Metal filtration spare 2 on its rectangular-shaped metal plate according to certain spacing parallel arranging offering slit 20, the tongue piece part that is formed by 20 zonings of this slit is inwards crooked thereby formed blow vent 21, meanwhile, this dull and stereotyped periphery is bent to a right angle, thereby formation filter element, so the filter element that forms constitutes filtration members in the mode of 2 combinations, its positive blow vent 21 with the back side is arranged in interlaced mode, is attached recovery so can make by the grease in the oil smoke of this filtration members.In addition, offering to make at the lower edge of this metal filtration spare 2 and adhere to the oils that is recovered in this filtration members 2 and run down into the through hole 22 that goes insertion section 10.

Again, be provided with the tap 23 of oil at the lowest part of the fan casing 12 of ventilating device 3, simultaneously on this oil discharge hole 23, connecting pipe 24 according to the mode that hangs down to the below of fan casing 12, utilize its to store in the fan casing 12, so can pass through the drip back side of shield 4 of pipes 24 from oil discharge hole 23 waved grease down by the rotation of fan 13.

Shield 4 is earlier metal plate to be made into rectangular shape, then its periphery is imposed periphery and rolls, and meanwhile two ends, its underpart are cut off, thereby makes the oil of this shield front of dripping be directed running underneath to trap for oil 5 through being subjected to oil cover 31.Then, this shield 4, its underpart is embedded in to hang down is fixed in the accepting in the frame 26 of side under the above-mentioned base plate 9, its top then adopts screw 29 to be installed in to stand up in removable mode to be fixed in peripheral frame 27 (this frame is supporting metal filtration spare 2) before on the runners 28 of face, height by this runners 28, this shield 4 according to the surperficial formed certain interval of metal filtration spare 2 every being supported, and zoning forms the suction gap 30 that width is narrower between the left side plate 1c of hood main body 1 and day plate 1b.

In addition, the place ahead, bottom at shield 4, be subjected to oil cover 31, its left and right sides system is combined in the fixing with on the hanger of the left side plate 1c that is fixed in hood main body 1, be installed in the place ahead, bottom of shield 4 in removable mode, this is subjected to oil cover 31 to face central part from the left and right sides to dip down sideling, thereby the oily directed flow that the left and right sides of accepting frame 26 is certainly flowed down has a guiding route forming in outstanding mode towards the oils trap from central division down to oils trap 5 simultaneously.

According to above structure, action by ventilating device 3, the suction wind speed that is generated in the narrower suction gap 30 of the width that institute's zoning forms between the periphery of the left side plate 1b of hood main body 1 and day plate 1c and shield 4 will become big, the oil smoke that become trapped in by this suction wind speed etc. is inhaled in the fan casing of ventilating device 3 by metal filtration spare 2, the grease that is captured by metal filtration spare 2 and ventilating device 3 then along the back side of shield 4 by accepting frame 26, being subjected to oil cover 31 to be recovered to oils trap 5.

Above embodiment is illustrated with regard to a kind of discharge opening to indoor exhaust type from ventilating device, but along with the exhaust discharge opening is connected on the exhaust airduct, and the front portion of this exhaust airduct is projected into outside the room, just can form the type of exhaust outside the room.

Again, in the above-described embodiments, shield is maintained according to the mode that becomes certain interval with metal filtration spare, but it also can carry out open or locking to the face of metal filtration spare 2 by the rotation of fore-and-aft direction.Below, will describe such embodiment with reference to the accompanying drawings.Yet, in the embodiment of the following stated, relate to when being in a ratio of same component parts with the foregoing description, will adopt prosign, and will be omitted its explanation.

Fig. 5 has shown such an embodiment, promptly when unusual temperature rising is detected out, shield will automatically rotate and form locking, according to aforementioned enforcement in the bottom of the same shield that mode constituted 33 of explanation be installed on the installation sheet 34 of hood main body 1 with rotating form, and face is respectively equipped with fixing with

hanger

36 and 37 into installing temperature fuse 35 under the sky of the upper end of this shield 33 and hood main body 1 plate 1c, moreover, between the backboard 1a of the top position of the rotatable installation place that is higher than shield 33 and hood main body 1, installing the coil spring 38 that impels this shield 33 to move towards the locking direction.Then, the installation of using fixed part 36 and hood main body 1 in the installation of shield 33 is with installing temperature fuse 35 between the fixed part 37, thereby make this shield 33 be maintained at the state that leaves in the face of metal filtration spare 2, under the situation that temperature fuse 35 has cut off because of abnormal temperature, pulling force by coil spring 38, shield 33 just forms locking, so just can prevent just in case the flame that takes place from gratin brushes up against to the metal filtration spare 2 that is attached with grease, thereby can prevent trouble before it happens fire.Yet, can also utilize the action of the rotation locking of shield that the running of air-supply arrangement 3 is stopped, and then can make switch 25 (this is a feasible switch of informing alarm buzzer 48 startings of abnormality) action.Again, under the situation of Fig. 5 embodiment, when temperature fuse cuts off, need be by manually rotating shield, and adopt a new temperature fuse, simultaneously it is set on the spendable state.

Fig. 6 has shown such an embodiment, promptly by electronic make locking by rotation shield realize resetting automatically, meanwhile can detect out unusual temperature and rise and automatically carry out locking.At this moment be with Fig. 5 similarly, under the base plate 9 of the back side of side position under the center of rotation of the shield 39 that rotatably is installed with and hood main body 1 between the side, be equiped with mechanical driving mechanism 40, this mechanical driving mechanism 40 accepts to be installed in the abnormal signal of the detecting sensor below the plate 1d 47 between the hood main body 1, produces action then shield 39 is carried out switching.If an example of this mechanical driving mechanism 40 is presented at Fig. 7, we just can see, link on the rotating shaft of motor 41 and are fixing thread spindle 42, and the feasible moving body 43 that is screwed with this thread spindle 42 stops the rotation, and enables axially to move.Moreover, installing the pushing portion 45 that contacts and carry out promotion with the compression plate 44 at the back side that is fixed on shield 39 in the front of this moving body 43, between moving body 43 and shield 39, carry out binding again by a flexible metal rope 40.

According to above-mentioned way, motor rotates and makes thread spindle 42 rotations and then moving body 43 move towards the place ahead, the pushing portion 45 of this moving body 43 contacts with the compression plate 44 of shield 39, and side is rotated towards the place ahead under the center of rotation, thereby and the upside of center of rotation turns to metal filtration spare 2 these sides locking is carried out in the front of this filtration members.In addition, if motor is according to rotating with above-mentioned opposite direction, moving body 43 will move towards the rear along thread spindle 42, meanwhile, because shield 39 is by metallic cable 46, its downside that is lower than center of rotation is hauled rotate to the rear, so shield 39 is opened with regard to having left metal filtration spare.Yet, the ON/OFF of motor 41 in the case not merely is to control by the signal of detecting sensor 47, also can with the running of ventilating device 3, shutdown switch interlock and moving mutually, under this occasion, use beginning and use the open and close of shield at the end just can automatically carry out, therefore very convenient.

The various embodiments described above all have following advantage, be that hood can be installed in the downside that hangs cupboard, even under the situation of not hanging cupboard also can according to be installed in height same when hanging the cupboard downside and install, so it is similar same high above the sky plate of hood main body with user's sight line, and be such height that hand can reach easily, and then can be used as putting of condiment to the sky of hood main body above the plate and put platform and use.In this case, fall, block bar as long as install on the periphery on the sky plate in order to prevent the above-mentioned condiment that is placed on day above the plate.

Claims

1. hood comprises:

By backboard (1a), day plate (1b) and left side plate (1c) is constituted, the hood main body (1) of the rectangular in essence triangle of side view and front openings; With

Be configured in the metal filtration spare (2) of this opening part in removable mode,

It is characterized in that:

Above-mentioned filtration members (2) opening in the face of this main body (1) in aforementioned body (1) is provided with;

Be contained the ventilating device (3) that is disposing in the spatial portion that in this main body (1), forms by metal filtration spare (2) institute zoning;

According to becoming the mode of certain intervals to be contained in the place ahead and can to cover this filtration members (2) with the surface of above-mentioned metal filtration spare (2), and between the left side plate (1c) that constitutes hood main body (1) and day plate (1b) formation of energy zoning suck the metal shield (4) in gap (30) surely;

Be configured in hood main body (1) inner bottom part, can be to the oils trap (5) that reclaims attached to the grease channeling conduct in metal filtration spare and the ventilating device; With

The exhaust outlet (19) that links to each other with the discharge opening (16) of above-mentioned ventilating device (3) is set at above the sky plate (1b) of hood main body (1).

2. hood according to claim 1 is characterized in that: be provided with the detecting sensor that detects out the abnormal temperature rising and produce the alarm buzzer of action according to the detection signal of this detecting sensor in above-mentioned hood main body.

3. hood according to claim 2 is characterized in that: above-mentioned shield its underpart is being propped up by axle in rotating mode, with detecting sensor detect interlock mutually unusually, thereby above-mentioned shield rotates the surface of closing metal filtration spare towards the rear.

4. hood according to claim 3, it is characterized in that above-mentioned detecting sensor is a temperature fuse, be installed in the top, the place ahead of hood main body and be between the top of shield of center of rotation with the downside, and, between shield and hood main body, installing the spring that impels this shield to rotate towards metal filtration spare one side.

5. hood according to claim 1 is characterized in that above-mentioned shield rotates along fore-and-aft direction by the driving mechanism that utilizes motor, and interlock is mutually turned round, stopped to this rotation with the device of pressure fan.