JPH11337142A - Range hood fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit opening of the lower open part of a hood unit simply by operating a hood cover for opening the lower open part of the hood unit. SOLUTION: Even when a connecting fitting 27 is released, the retaining relation of an engaging unit 17b to a retained unit is maintained and a hood cover 4 will not be pivoted downward. The hood cover 4 is moved utilizing a clearance so that the retaining relation of the engaging unit 17b to the retained unit 17a is released to open a hood unit (a). On the other hand, the retained unit 17a, retaining the engaging unit 17b provided in a curved condition from the front rim of the hood cover 4 to the rear back direction of the upper side of the same under the condition of surface engagement, is inclined upward from the lower part of front rim of open rim of the hood unit (a) toward the indoor ceiling of fore part whereby a safe mistaken-drop preventing countermeasure, in which the retaining relation will not be released unless otherwise the hood cover 4 is not pulled out slantingly upward intentionally into the direction of the inside of a room along the retained unit 17a, is constituted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a range hood fan, and more particularly to an improvement in a mounting structure of a hood cover (lower plate) for opening and closing a lower opening of a hood.

[0002]

[Technical background] Flat-type range hood fans cover the lower opening of the hood part exclusively with a hood cover (lower plate), and the lower opening part of the hood part is included in other range hood fans such as boots. Is covered with a hood cover (lower plate). Although the depth of the hood cover (lower plate) varies depending on the type, the hood is generally formed into a concave shape that enters the hood portion, and the concave portion serves as a waste gas capturing space. The hood cover (lower plate) has four corners screwed to the hood so that the hood can be opened when cleaning the inside of the hood or when maintaining and managing the internal blower. .

However, when opening the hood,
It is dangerous to support the hood cover by hand so that the hood cover does not fall until all screws (connectors) are removed.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to operate a hood cover that closes a lower opening of a hood portion to operate the lower opening portion. To provide a range hood fan that can easily open the hood.

[0005]

The technical means taken to solve the above-mentioned object is as follows. Claim 1 claims that one edge of the peripheral edge of the hood cover corresponds to one edge of the corresponding open edge of the hood portion. The food cover is rotatably provided by securing the clearance and hooking the food cover, and the remaining arbitrary edge portion of the open edge of the food cover is attached to the edge portion of the corresponding open edge of the hood portion by attaching means. An attaching portion is provided on the engaging portion provided on the hood cover and the hood portion. When the engaging portion is locked and the hood cover is moved using the clearance, the locking is performed. The gist of the present invention is to provide a temporary fixing mechanism including a locked portion for releasing the lock, and a releasable connecting tool for fixing the engaging portion and the locked portion at the time of the locking. According to a second aspect of the present invention, the hooking portion of the first aspect is a rear edge of the hood cover, and the locked portion is inclined upward from a lower front edge of an opening edge of the hood portion toward a front ceiling. Provided, bent from the front edge of the hood cover toward the upper rear side so as to lock the engagement portion to the locked portion in a surface engagement state, and the clearance is provided on the front side of the rear edge of the hood cover. The gist is that it is secured. According to a third aspect of the present invention, the hook portion is a rear edge of the hood cover, and the locked portion is also used as an oil receiver at a front edge of an open edge of the hood portion, and the engaging portion is a hood cover. The main point is that the clearance is secured at the rear side of the rear edge of the hood cover. According to a fourth aspect of the present invention, one edge of the hood cover is hooked on one edge of a corresponding open edge of the hood, and the hood cover is rotatably provided. Attached to an edge portion of the corresponding open edge, the attachment means being formed between the hood portion and the hood cover, and a releasable connection member for fixing the hood cover and the hood portion. An elastic engagement mechanism for temporary fixing, in which the engagement relationship is released by artificially lowering the hood cover after the connection tool is disconnected, is provided. (5) The connecting tool according to any one of (1) to (4) is a screw, and the screw is rotatably supported so as not to fall. According to a sixth aspect of the present invention, the rear edge of the hood cover is hooked on the rear edge of the corresponding open edge of the hood portion, and the hood cover is rotatably provided. An elastic engagement mechanism for temporary fixing is provided, the engagement of which is released by an artificial lowering of the hood cover to the lower side of the hood cover, and when the elastic engagement mechanism is released, the hood portion is opened. The gist of the present invention is that a hanging piece engaged with the oil receiver at the front edge of the rim is raised from the front edge of the hood cover, and a clearance for moving the hood cover behind the rear edge of the hood cover is secured. Claim 7
The gist of the invention is that the hook of the hood cover according to any one of claims 1 to 6 on the hood portion is rotatable and removable.

(Operation) According to the above technical means, the following operation is achieved. (Claim 1) In the present range hood fan, the locking relationship of the engaging portion with the locked portion is maintained even when the connecting tool is released, and the hood cover does not rotate downward. The hood can be opened only by moving and rotating the hood cover using the clearance so that the engagement of the engagement portion with the locked portion is released. (Claim 2) In the present range hood fan, even when the connecting tool is released, the locked portion that locks the locking portion bent in the upper rear direction from the front edge of the hood cover in a plane engagement manner, The hood cover must be deliberately pulled obliquely upward in the room direction along the locked part because it is inclined upward from the lower front edge of the open edge of the hood toward the front ceiling. A safe fall prevention measure that does not release the locking relationship is constructed. (Claim 3) In the present range hood fan, the locked portion is also used as the existing oil receiver of the hood portion. (Claim 4) Since the present range hood fan normally constitutes an elastic engagement mechanism for temporary fixing even when the connecting tool is released, the hood cover does not rotate downward similarly to the first embodiment. The hood can be opened by rotating only by artificial pulling of the hood cover with a force greater than the elastic engagement force of the elastic engagement mechanism. (Claim 5) The present range hood fan does not drop the screw even if the screw which is the connecting tool is disconnected. (Claim 6) In the present range hood fan, even if the hood cover is pulled down and released, the hook at the front edge of the hood cover is not caught by the existing oil receiver and does not rotate erroneously.
The hood cover can be rotated by lifting the hood cover slightly upward and moving the hood cover backward so as to escape the catch with the oil receiver. (Claim 7) In the present range hood fan, the hood cover can be further removed from the hood portion.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the range hood fan of the present invention will be described. FIGS. 1 to 8 show several embodiments, and the reference numeral is a range hood fan.

First, the range hood fan shown in FIGS. 1 to 4 will be described. The range hood fan A is of a boot type, and has a U-shape in plan view composed of left and right side plates 11, a back plate 21, and a top plate 31. A vertical blower (with a built-in multi-blade fan) 3 is installed in a hood portion a in which the front opening portion of the box 1 is detachably covered with a front plate 2, and the hood portion a is opened downward. The cover is openably and closably covered with a hood cover 4, and a connection duct 5 for communicating the inside of the hood cover 4 with the blower 3 is attached to the upper surface of the hood cover 4. It constitutes a waste gas passage.

As shown in FIGS. 1 and 2, the hood cover 4 has a substantially truncated downward trumpet shape in which a central portion surrounded by a peripheral edge frame portion 14 has a concave shape. The molded product or the component plate is formed of an integral molded product with no irregularities and gaps welded to the ends of the required number of sheets, and has a slightly larger flat area than the lower open portion of the hood portion a. It can be opened and closed. Also,
The food cover 4 is so deep that even women and girls can reach the top surface 24 provided with the engaging and disengaging portions 16 of the grease filter 6, so that grease and the like adhering during daily household cleaning can be wiped off. Is considered. The engaging / disengaging portion 16 is formed by an opening 16a and a filter frame 16b protruding upward from the periphery of the opening 16a, so that the grease filter 6 can be inserted into and removed from the filter frame 16b from below as in the conventional case. is there.

As shown in FIG. 2, the edge frame portion 14 of the hood cover 4 is substantially L-shaped so that three edges except the rear edge face upward.
It is formed with a bent shape. The hood cover 4 has a rear edge portion secured to the rear edge of the open edge of the hood portion a with a clearance a1 hooked so as to be able to be inserted and removed, and further attaches the front edge to the front edge of the open edge of the hood portion a. It is attached by means 7.

The hooking portion is a hooking piece 14a which is bent downward in an L shape from the rear edge frame portion 14 of the hood cover 4, and the hooked portion is the hood portion a.
The existing oil pan 21 bent upward from the rear edge into an L shape
The hook piece 14a is hooked on the oil receiver 21a to support the hood cover 4 rotatably in the front-rear direction. The width dimension of the horizontal plane of the oil receiver 21a is used as a clearance a1 that allows the hood cover 4 to move back and forth.

The attaching means 7 comprises a temporary fixing mechanism 17 and a connecting member 27.

As shown in FIG. 3, the temporary fixing mechanism 17 includes a locked portion 17a fixed to the left and right sides of the lower end of the front plate 2, which is a front edge of the hood portion a, and a corresponding front portion of the hood cover 4. An engaging portion 17b is formed on the edge frame portion 14 and is engaged with the upper surface of the locked portion 17a in a surface engaging manner.

The locked portion 17a is, as shown in FIG.
The end plate is fixed to the oil receiver 2a in the vicinity of both lower end corners by welding or other appropriate means to form a cantilevered main body plate portion 17a 'that is inclined upward toward the ceiling of the front room. 17a "is formed to extend forward at the same angle as the main body plate portion 17a '.

The engaging portion 17b is formed of an edge piece bent inward (backward) from the front edge frame portion 14 of the hood cover 4 corresponding to the locked portion 17a as shown in FIG. The engaging portion 17b is in an inclined shape so as to be in surface engagement with the locked plate 17a. In a use state in which the engaging portion 17b is locked in surface engagement with the locked portion 17a ", Hook of food cover 4
14a comes into contact with the back plate 21 of the hood portion a,
An actual clearance a1 is secured in front of a.

The connecting member 27 is a screw as shown in the figure, and is connected to the front edge corner of the hood cover 4 and the locked portion.
The main body 17a 'of 17a is releasably fastened. In this embodiment, a resin piece 34 is integrally formed at a corner portion of the hood cover 4, and the resin piece 34 and the main body plate portion 17a 'are releasably connected.

As shown in FIG. 1, the connection duct 5 has a rectangular lower end opening 15 having an area slightly larger than the engagement / disengagement portion 16.
And a vertical bent plate portion 25a having a communication port 25b opened to communicate with the intake port 13 of the blower 3 and a rearward curved body portion 25 to form a substantially bent tube shape in a side view. The lower end of the top surface 24 of the cover 4 so as to surround the engagement / disengagement portion 16
15 is detachably attached with a packing (not shown) or the like interposed. In FIG. 2, reference numerals 8 and 8 denote a pair of parallel mounting plates to which the connection duct 5 is detachably attached with screws or the like.

The range hood fan A configured as described above takes in the waste gas 100 rising from the cooking utensil into the room in the interior space of the hood cover 4 (waste gas capture space) without leaking. The waste gas is guided to the grease filter 6 on the top surface 24, where the fats and oils contained in the waste gas are adsorbed and removed, and the suction operation of the blower 3 causes the connection duct 5, the fan casing 23, and the exhaust duct 9 to pass through. Exhausted outside.

The grease and the like adhere to the food cover 4 and the grease filter 6, and the dirt passing through the grease filter 6 gradually adheres to the inner surface of the connection duct 5.
When cleaning, the food cover 4 to which the oil or the like adheres strongly is reached, and the hand is wiped off at the time of daily cleaning, and the grease filter 6 to be washed likewise is reached by removing the hand. The connection duct 5 is not cleaned every day, but when cleaning, the connection duct 5 itself may be removed from the hood cover 4 which has been removed by removing the connecting member 27 from below. The connection duct 5 has a reduced wiping area, and has a form having a flat surface and a curved surface without irregularities, and is easy to wipe. Therefore, unlike conventional cleaning of the inner surface of the hood portion a, there is no need to be hurt by sharp projections such as flanges, or to remove fats and oils and the like stuck in minute gaps.

Further, as described above, the engaging portion 17b of the front edge of the hood cover 4 has a temporary fixing structure in which the engaging portion 17b of the front edge is engaged with the upper surface of the locked portion 17a of the front edge of the hood portion a. , Connector
Even if the fastening of the hood cover 27 is released, the hood cover 4 does not rotate, and the locked portion 17a is inclined upward toward the front indoor ceiling. If the hood cover 4 is not pulled out diagonally forward and upward, the locking relationship will not be released, and the accident such as the hood cover 4 falling (pivoting) due to the release operation or vibration will prevent the user from being injured. can do.

In the above embodiment, the case where the hood cover 4 has the connection duct 5 is described in detail. However, although not shown, the case where there is no connection duct is also included. Further, a range hood fan in which the connection duct is attached to the blower and the lower end of the connection duct is in contact with the top surface of the hood cover during use may be used. In this case, it is sufficient to secure a space equal to or larger than the clearance a1 between the filter frame 16 and the edge of the lower end port 15 of the connection duct.

Next, the range hood fan A shown in FIG. 5 will be described. The range hood fan A has a flat flat shape, the dent amount of the central portion of the hood cover 4 is small, and the connection hood is not provided. Except for the above, there is no difference from the above-described embodiment, so that the same reference numerals are given and the detailed description is omitted.

The embodiment shown in FIG. 6 is different from the embodiment shown in FIG.
Is also used as the oil receiver 2a at the lower edge of the front plate 2, and the engaging portion 17b is bent forward (raised) at the front edge frame portion 14 of the hood cover 4.
It consists of a hanging piece. The connecting tool 27 is
A screw for fastening the bottom surface of 11a and its hanging piece 17b.
The other configuration differs from the above-described embodiment in that a clear lath a1 is secured between the hook piece 14a and the back plate 21 of the hood portion a, that is, in the rear, and that the connection duct 5 is not provided. Then, after the fastening is released, the hood cover 4 is moved rearward (slid) to release the lock, and can be rotated and removed.

In the embodiment shown in FIGS. 7 and 8, an elastic engagement mechanism 37 is used in which the temporary engagement mechanism 17 is disengaged by artificially pulling down the hood cover 4 downward.
It has been changed to. As shown in FIG. 8, the elastic engagement mechanism 37 fixes the sandwiched portion 37 a upward to the back surface of the front edge frame portion 14 of the hood cover 4, and attaches it to the bottom surface of the corresponding oil receiver 2 a of the front plate 2. A pair of elastic holding portions 37b in which the held portion 37a is elastically held are fixed downward. Of course, a connecting member 27 made of a screw is also used. In the case of this embodiment, after releasing the fastening of the connecting member 27, the hood cover 4 is rotated only by pulling it downward without moving it using the clearance a1 as in the above-described embodiments. Can be extracted.

The embodiment shown in FIG. 9 and FIG.
A screw 27 as a connecting tool shown in FIG. 4 is rotatably supported so as not to fall.

In the case of this embodiment, the resin piece
A cylindrical portion 34a whose upper end is opened from the bottom portion is erected inside the resin cover 34, and when the resin piece 34 is fitted and fixed to a corner portion of the food cover 4 as shown in FIG. A closing plate 44 is fixed at a position where the opening at the upper end of the cylindrical portion 34a is covered, and a cutout 44a or an insertion hole is formed in the closing plate 44 so that only the screw shaft 27a of the knurled screw 27 is inserted upward. An operation port 34b smaller in diameter than the screw head 27b is opened at the bottom. In this embodiment, the knurled screw 27 does not fall even if the knurled screw 27 is released.

Next, the embodiment shown in FIGS. 11 and 12 will be described in the case where the connecting member 27 such as a screw is not used. In this embodiment, the above-described elastic engagement mechanism 37 is
A pinched portion 37a fixed to one of the back surface of the front plate 2 of the hood portion a and the back surface portion of the hood cover 4 corresponding to the portion, and a pair of elastic members by which the pinched portion 37a is elastically held. And an inverted L-shaped hanging piece 14b to be locked to the oil receiver 2a of the front plate 2 is bent at the front edge frame 14 of the hood cover 4 and further formed by the hooking part 14a. A clearance a1 is provided between the rear edge of a certain hood cover 4 and the back plate 21 of the hood portion a so that the hood cover 14 can be moved. In the case of this embodiment, the hood cover 4
When the hood cover 4 is pulled down and the connection between the elastic holding portion 37b and the held portion 37a is released, the hook 14b is engaged with the existing oil receiver 2a of the front plate 2 as shown in FIG. The hood cover 4 is rotated only after the hood cover 4 is moved backward so that the hood cover 4 is lifted up and lifted up to use the clearance a1 to release the locking relationship of the hanging piece 14b with the oil receiver 2a. be able to.

Although only one example of the flat-type range hood fan shown in FIG. 5 has been described, it is needless to say that the temporary fixing mechanism and the elastic engaging mechanism of the other embodiments described can be used.

[0029]

As described above, the present invention has the following advantages. (Claims 1 and 4) Even if a screw or the like is removed when the hood is opened for cleaning the inside of the hood, maintenance of the blower, or the like, the hood cover does not rotate downward even if the screws are removed, and the hood cover is manually manipulated using the clearance. It is a range hood fan that opens the hood for the first time by moving it manually or pulling it artificially. Therefore, the hood portion can be opened and the hood portion can be opened without performing a troublesome operation of removing the screw while supporting the hood cover with a hand so that the hood cover does not fall. (Claim 2) In addition, even if the connecting member is released, the locking relationship is not released unless the hood portion is intentionally pulled out obliquely upward in the room direction along the locked portion so that the locking relationship is not released. Therefore, even if the hood cover is moved to the time when the coupler is released, an accident such as the hood cover rotating can be reliably avoided. (Claim 3) Further, since the locked portion is also used as the existing oil pan at the edge of the hood portion, there is no need to modify the hood portion at all, and the manufacturing cost can be reduced. (Claim 5) A screw as a connecting tool does not fall and is not lost. (Claim 6) The hood cover is fixed without using a coupling tool such as a screw, and even if the fixing is released by an accident or the like, there is no possibility that the hood cover may turn erroneously,
A range hood fan whose handling of the hood cover is very simple can be provided. (Claim 7) In addition, since the hood can be removed from the hood by lifting the hood cover slightly upward so as to release the hook, and then pulling it out, it is not necessary to remove the hood cover when removing the grease filter or washing the whole. .

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a range hood fan.

FIG. 2 is a perspective view from the back side of the hood cover, which is partially cut away.

FIG. 3 is a partial perspective view of a main part showing a relationship between an engaging portion and a locked portion, (a) showing a locked state, and (b) showing a separated state.

FIG. 4 is an enlarged sectional view showing a hooked portion.

FIG. 5 is a partially cutaway side view of another embodiment.

FIG. 6 is a partially cutaway side view of still another embodiment.

FIG. 7 is a partially cutaway side view of another embodiment.

FIG. 8 is an enlarged perspective view of the gist, partially cut away.

FIG. 9 is a partial side view of another embodiment, partially cut away.

FIG. 10 is a perspective view of a resin piece portion, showing a state of being fitted to a hood cover.

FIG. 11 is a side view of still another embodiment, partially cut away and intermediately omitted.

FIG. 12 is a side view showing a case where the hood cover is rotated, which is partially cut away and intermediately omitted.

[Description of Signs] 4: Hood cover a: Hood part a1: Clearance 7: Attachment means 17b: Engagement part 17a: Locked part 17: Temporary fixing mechanism 27: Connector (screw, knurled screw) 37: Elasticity Engaging mechanism 2a, 21a: Oil receiver 2: Front plate

Claims (7)

[Claims] 1. A hood cover is rotatably provided by securing one edge of a peripheral edge of a hood cover to one edge of a corresponding open edge of a hood portion so as to be rotatable. An edge portion is attached to an edge portion of a corresponding open edge of the hood portion by an attaching means, and the attaching means is provided on an engaging portion provided on the hood cover and on the hood portion,
A temporary fixing mechanism including a locked portion that locks the engaging portion and releases the locking when the hood cover is moved using the clearance, and an engaging portion at the time of the locking. A range hood fan, comprising: a releasable connecting member for fixing the locked portion and the locked portion. 2. The method according to claim 1, wherein the hooking portion is a rear edge of a hood cover, and the locked portion is provided to be inclined upward from a lower front edge of an opening edge of the hood portion toward a front indoor ceiling. Bent from the front edge of the hood cover toward the upper rear side so as to lock the joint portion to the locked portion in a surface engagement state,
The range hood fan according to claim 1, wherein the clearance is secured in front of a rear edge of the hood cover. 3. The hooking portion is a rear edge of a hood cover, and the locked portion is also used as an oil receiver at a front edge of an open edge of the hood portion, and the engaging portion is provided from a front edge of the hood cover. 2. The range hood fan according to claim 1, wherein the range hood fan is erected to secure the clearance behind a rear edge of the hood cover. 4. A food cover is rotatably provided by hooking one edge of a peripheral edge of the food cover to one edge of a corresponding open edge of the hood portion, and the remaining arbitrary edge portion of the open edge of the food cover is hooded. Attached to an edge portion of the corresponding open edge, the attachment means being formed between the hood portion and the hood cover, and a releasable connection member for fixing the hood cover and the hood portion. A range hood fan, comprising: a temporary fixing elastic engagement mechanism that is released from engagement by manual lowering of the hood cover after the coupling tool is disconnected. 5. The range hood fan according to claim 1, wherein said connecting member is a screw, and said screw is rotatably supported so as not to fall. 6. The food cover is rotatably provided by hooking a rear edge of the food cover to a rear edge of a corresponding open edge of the food portion, and a front and rear portion of the food portion and a rear surface of the food cover corresponding to the portion. An elastic engagement mechanism for temporary fixing is provided, the engagement of which is released by an artificial lowering of the hood cover to the lower side of the hood cover, and when the elastic engagement mechanism is released, the hood portion is opened. A range in which a hanging piece engaged with the oil receiver at the front edge of the rim is raised from the front edge of the hood cover, and a clearance for moving the hood cover behind the rear edge of the hood cover is secured. Food fan. 7. The range hood fan according to claim 1, wherein a hook of the hood cover to the hood portion is rotatable and removable.