JPH10288369A - Range hood fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the manufacturing cost of a range hood fan by a method wherein a supporting means having a simple structure for supporting a cover means within a flat type hood body may also act as an oil receptor means. SOLUTION: This fan is constructed such that its lower end is abutted against an inner surface section around a rising flange 51 arranged circumferentially around a lower surface opening edge of a flat type hood member 1 so as to support a cap-like hood cover 5. Waste gas with its oil and fat substances being adsorbed and removed by a filter 8 arranged at a top surface 15 of the cap-like hood cover 5 is discharged out of a house through an air suction hole 21 and a blower 2 and then the oil and fat substances adhered to the cap-like hood cover 5 are recovered into an oil pack 6 assured between the lower end of the hood cover 5 and the raised flange 51 along the surface of the hood cover 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat range hood fan, and more particularly to a flat range hood fan having a blower mounted on a ceiling of a flat hood body.

[0002]

2. Description of the Related Art Conventionally, a range hood fan in which an intake hole is provided in a ceiling portion of a flat hood body, and a blower is mounted on the upper portion of the flat hood body just above the intake hole, has been proposed.
This is known from Japanese Patent Application Laid-Open No. 9-65329. This type of range hood fan is easy to clean since the inside and outside of the blower are not contaminated with oils and fats and the like, and the place of attachment is limited to the inside of the flat hood like a flat range hood fan having a built-in blower. The blower can be easily installed using the large open space above the hood body instead of the narrow internal space,
Good mounting workability. The width of the flat hood body can be reduced, and the duct connection space is expanded to improve workability. And other advantages can be achieved.

[0003]

By the way, even if the flat hood can be prevented from adhering to the inside of the flat hood, the cleaning operation can be performed more easily even if the flat hood can be prevented from adhering. In order to make this possible, it can be proposed that the flat hood body is made of a pre-coated steel sheet which has been subjected to fluorine coating and silicon coating. In the case of pre-coated steel sheets, it is easy to wipe off dirt, but spot welding is not possible, so the assembly method is limited to fixing with rivets and screws only, and it is not possible to give flexibility in manufacturability, increasing cost. Become. Then, it can be proposed to provide a cover body that can be wiped from below in the flat hood body. When the cover is used, the cleaning property can be greatly improved in combination with the reduction of the cleaning area to the cover. In that case, it is necessary to provide a support means for supporting the cover body in the flat hood body or the cover body,
If the support means becomes complicated in structure, it will increase the production cost.Also, a special structure should be adopted for the oil receiver, such as oil and grease, flowing down the cover, to reduce the production cost. This will lead to soaring, and requires some ingenuity.

[0004] The present invention has been made in view of the conventional circumstances, and the technical problem is that the support means having a simple structure for supporting the cover means in the flat hood body also serves as the oil receiving means. Is to reduce.

[0005]

According to a first aspect of the present invention, there is provided a flat hood body having an intake hole provided at a ceiling thereof, and an intake hole provided at an upper portion of the flat hood body. In a range hood fan to which a blower is mounted just above the hood, an umbrella-shaped hood cover having a filter engagement / disengagement portion connected to the intake hole on the top surface is provided in the flat hood body, An upright flange is provided around the opening edge of the lower surface of the mold hood body, and the lower end of the umbrella-shaped hood cover is brought into contact with the inner surface of the flat hood body at a desired distance from the upright flange. The point is that an oil pack is formed between the lower end and the upstanding flange. A second aspect of the present invention is that the cross-sectional shape of the space secured for the oil pack according to the first aspect has a shape that matches or substantially matches the cross-sectional shape of the non-combustible oil absorption mat. A third aspect of the present invention is that the top surface of the umbrella-shaped food cover according to the first or second aspect is inclined. According to a fourth aspect of the present invention, the umbrella-shaped hood cover according to any one of the first to third aspects is configured so as to be detachable from an openable front surface of a flat hood body. According to a fifth aspect, in the flat hood body according to any one of the first to fourth aspects, a leaf spring that repels the hood cover downward without obstructing entry of the umbrella-shaped hood cover is provided on the back side, The gist of the invention is that a rotatable catching portion for pressing the hood cover below the flat hood body is provided on the side. According to a sixth aspect of the present invention, the upper end abuts on the inner surface portion of the flat hood around the intake hole around the filter engagement / disengagement portion according to any one of the first to fifth aspects, and the communication space between the filter and the intake hole and the hood cover. The gist of the present invention is that a height-adjustable cylindrical isolation means for isolating the space from the back space is provided.

According to the above technical means, the following effects are obtained. (Claim 1) The present range hood fan supports an umbrella-shaped hood cover with its lower end abutting on an inner surface (lower surface) around an upstanding flange provided around the lower opening edge of the flat hood. Then, the waste gas obtained by adsorbing and removing fats and oils by a filter provided on the top surface of the umbrella-shaped food cover is exhausted to the outside through an intake hole and a blower, and the fats and oils and the like adhering to the umbrella-shaped food cover are removed. The oil is collected on the oil pack secured between the lower end of the food cover and the upstanding flange along the surface of the food cover. (Claim 2) In the present range hood fan, a nonflammable oil-absorbing mat is fitted in a space secured for an oil pack in a fitting manner, and cleaning is performed by replacing the oil-absorbing mat. (Claim 3) The present range hood fan does not drop oils and the like that cannot be retained by the filter, and the oils and the like adhering to the food cover and the like pass through the inclined top surface and the skirt surface including the inclined surface. Guide to pack or oil sorption mat. (Claim 4) The present range hood fan allows the hood cover to be inserted and removed from the front of the flat hood body, and the work required to remove the hood cover during cleaning and maintenance of the hood cover itself is reduced. (Claim 5) In the present range hood fan, an umbrella-shaped hood cover is set by inserting the hood cover from the front of the flat hood body, and the leaf spring is elastically deformed at a deep portion of the hood cover into which the hood cover is inserted. The hood cover is moved to a predetermined position without disturbing insertion, and the hood cover is elastically deformed on the hood cover at the predetermined position, and is elastically deformed on the inner surface (lower surface) of the flat hood body to be rotatable. The connecting portion fixes the hood cover to the inner surface (lower side) of the flat hood body by pressing the tip against the upper surface of the hood cover by rotation. At the time of insertion, the catching part is rotated upward so as not to hinder the insertion of the hood cover. Stably fix the hood cover. (Claim 6) After inserting the present range hood fan, the height of the cylindrical isolating means is adjusted, and the upper end thereof is brought into contact with the inner surface (upper surface) of the flat hood body around the intake hole, so that the filter, The space between the air inlet and the space behind the hood cover is completely isolated.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 8 show an embodiment of the range hood fan of the present invention, and reference numeral A denotes a range hood fan.

As shown in FIG. 1, the range hood fan A is provided with an intake hole 21 in a ceiling portion 11 of the flat hood body 1 and is positioned above the intake hole 21 above the flat hood body 1. A blower 2 is attached, an exhaust duct 3 is connected to the blower 2, and a curtain plate 4 is erected from the front end of a ceiling 11. A hood cover 5 and an oil pack 6 are provided to prevent the attachment of the hood and the like.

The flat hood body 1 has an intake hole 21 in a ceiling portion 11,
It has the shape of an internal hollow flat box with an opening 31 provided in the lower part opposite to the intake hole 21 and is constituted by a box-shaped lid 41 whose front face can be opened and closed, and an upright flange 51 is provided at the lower opening edge.
Has been established.

As shown in FIGS. 1 to 3, the hood cover 5 has an umbrella shape having a top surface 15 formed of a flat surface and a skirt surface 25 inclined downwardly from the periphery of the top surface 15 so as to expand. The lower end of the skirt surface 25 is formed to have an area that engages with the inner surface (lower surface) part of the lower side of the flat hood body 1 on the outer side of the rising flange 51 at the lower opening edge. Filter) 8 disengagement section 35
The oil pack 6 is formed by the lower end of the skirt surface 25 and the upstanding flange 51. Reference numeral 7 denotes a lamp projection cover which is detachably provided on a concave portion 25a provided on the skirt surface 25 with its surface flush with the skirt surface 25.

The engaging / disengaging portion 35 is constituted by an opening 35a formed in the top surface 15 and an L-shaped annular frame 35b protruding therearound. The filter 8 is placed in a space surrounded by the annular frame 35b. Thus, the filter 8 can be disengaged from above and below.

As shown in FIG. 3, the oil pack 6 has a vertical surface portion 16 extending downward from a lower end of a skirt surface 25 and an inner surface (lower surface) of the flat hood body 1 which is bent horizontally outward from a tip of the vertical surface portion 16. The horizontal flange 26 mounted on the vertical hood body 51 and the upstanding flange 51 secure an annular groove shape on the inner surface (lower side) of the flat hood body 1 between the vertical surface portion 16 and the upstanding flange 51.

The range hood fan A thus configured adsorbs and removes oils and fats contained in the waste gas rising from the cooking utensil with a filter (grease filter) and exhausts the air from the blower 2 to the outside through the exhaust duct 3. . At that time, the waste gas rises along the skirt surface 25 by the guiding action of the skirt surface 25 in the umbrella-shaped food cover 5, so that the oil and fats adhere to the food cover 5. The oil and the like adhering to the surface of the food cover 5 are promptly collected by the oil pack 6 by the guide action due to the inclination of the skirt surface 25, so that the food cover 5 is kept clean.

When cleaning the hood cover 5 itself or maintaining the range hood fan A for a long period of use, the lid 41 may be removed and the hood cover 5 may be pulled out into the room.

The lamp 100 is attached to the box-shaped lid 41 as shown in the figure when the flat hood 1 is thin and hinders the insertion and removal of the hood cover 5. It is preferable that a sealing material (not shown) is fixed to the lower surface of the horizontal flange 26 so as to prevent the oil and the like collected in the oil pack 6 from overflowing into the flat hood 1. .

Referring now to FIG. 4, this embodiment shows a case where the oil pack 6 is used as a storage space 6 ″ for a non-combustible oil absorbing mat 6 ′.

The storage space 6 "secured for the oil pack is formed so as to rise vertically from the base end of the horizontal flange 26 bent horizontally outward from the lower end of the hood cover 5 to form a lower end of the skirt surface 25. Inverted L-shaped surface
On the inner surface (lower surface) of the flat hood body 1 between the base 36 and the upstanding flange 51, an annular shape is formed on the inner surface (lower surface) of the flat hood body 1 so as to have a sectional shape that matches or substantially matches the sectional shape of the non-combustible oil absorption mat 6 '.

As shown, an oil-absorbing mat 6 'having a rectangular cross section is fitted into the housing space 6 "in a fitting manner.

In this range hood fan A, the oils and fats adhering to the surface of the hood cover 5 are collected and retained on the oil adsorbing mat 6 'by the guide action of the skirt surface 25, so that the disposal of the oils and fats is oil adsorbed. Only the replacement of the mat 6 'can be completed.

FIG. 5 and FIG. 6 show that even if a situation in which fats and oils are adsorbed and dropped is more than the trapping function of the filter 8 for absorbing and removing fats and the like contained in waste gas, the fats and oils are recovered. In this case, an embodiment is shown.

In this embodiment, the top surface 15 of the hood cover 5 provided with the engaging / disengaging portion 35 of the filter 8 is inclined downward, and a skirt surface connected to the inclined top surface 15 is provided.
In order to cope with this problem, several oil lines 25b are recessed from the front side.

The inclined top surface 15 has a function of guiding the skirt surface 25 without dripping oils and fats adsorbed and removed beyond the function of capturing the filter 8, and several oil lines 25b are formed. The path flowing toward the oil pack 6 or the oil absorption mat 6 ′ is formed in a concave shape, and the oil and the like are smoothly guided to the oil pack 6 and the oil absorption mat 6 ′ without diffusing a wide range of oils and fats.

Accordingly, in the range hood fan A, the top surface 15 of the hood cover 5 is inclined and the skirt surface 25 is provided with an oil line 25b. It is possible to flow down to the oil pack 6 or the oil absorption mat 6 'without dripping oils and fats, etc., so that the skirt surface 25 is not unnecessarily stained over a wide range and the hood cover 5 is kept in a clean state for a longer time. Enable.

FIG. 7 shows an embodiment in which the hood cover 5 which is inserted and removed from the front surface of the flat hood body 1 is stably fixed as described above, and the fixing means 9 is rotatable with the leaf spring 19. It is composed of an engaging portion 29.

The leaf spring 19 is, as shown in FIG.
The upper end is fixedly attached to the inner surface (upper surface) on the back side, and has an arc-shaped pressing portion 19a at the lower end and a curved elastic bending portion 19b at an intermediate portion.

The hooking portion 29 is attached to the front inner surface (upper surface) of the flat hood body 1 with its upper end pivotally mounted in the front-rear rotation direction, and is mounted when it is turned vertically. The top surface 15 of the hood cover 5 is set to have a length enough to press the rear surface of the end portion, and the lower end is formed by bending a pressing flat surface 29a engaging with the top surface 15 to stabilize the grip. I have.

When the umbrella-shaped hood cover 5 is inserted from the front open portion of the flat hood body 1 in the state shown in FIG. The hood cover 5 is elastically deformed on the back surface of the skirt surface 25 and does not hinder the insertion of the hood cover 5, and the hood cover 5 is elastically deformed on the back surface of the skirt surface 25 reaching a predetermined position so that the hood cover 5 becomes It is mounted on the inner surface (lower surface) (Fig. 7
(B)), by rotating the rotatable catch portion 29, the hood cover 5 is pressed against the back surface of the hood cover 5 to press the hood cover 5 against the inner surface (lower surface) of the flat hood body (FIG. 7).
(C)). At the time of insertion, the catch portion 29 is rotated upward so as not to hinder the insertion of the hood cover 5, and at the time of extraction, the hood cover 5 may be artificially extracted against the elasticity of the leaf spring 29. The hood cover 5 is stably fixed without complicating the insertion and removal work (see FIGS. 7A and 7B).

In the range hood fan A, the rear side of the hood cover 5 is positioned by the resilient force of the leaf spring 19 by inserting the flat hood body 1 through the front open portion, and then the catch portion 29 is rotated. The food cover 5 can be stabilized by a simple operation of applying a pressing force to the food cover 5, and the food cover 5 can be pulled out artificially by turning the pulling and fastening portion 29 upward.

FIG. 8 shows a case in which waste gas does not enter the space 45 behind the hood cover 5 even if there is a space between the filter 8 and the intake hole 21 that communicates with the space 45 behind the hood cover 5. An embodiment is shown, in which a height-adjustable isolating means 10 whose upper end abuts on the inner surface (upper surface) of the flat hood body 1 around the intake hole 21 around the engagement / disengagement portion 35 is attached. .

As shown in the figure, the isolating means 10 has an annular mounting frame 10a protrudingly fixed to the top surface 15 of the hood cover 5 around the engaging / disengaging portion 35, and is slidable on the inner surface of the mounting frame 10a. It comprises an adapter 10b which is fitted inside and has an outward flange 10c at the upper end, an attachment portion 10d between the attachment frame 10a and the adapter 10b, and an elastic sealing material 10e fixed to the outward flange 10c.

The mounting portion 10d is composed of a locking recess 10d 'formed in the mounting frame 10a by embossing or the like and a screw 10d "screwed into the adapter 10b.

The range hood fan A inserts the hood cover 5 into the flat hood body 1 from the front opening portion and fixes it by its own weight or the fixing means 9, and then raises the adapter 10b from the state shown in FIG. The elastic seal part 10e is
The screw 10d "is hooked in a recessed state while being pressed against the inner surface (upper surface) of the surrounding flat hood body 1, that is, the inner surface of the ceiling portion 11.
Easy to work with 10d ', filter 8 and air intake
Even if the layout is such that there is a space in communication with the space 45 behind the food cover 5 with the space 21, the back surface of the food cover 5, the inner surface of the flat food body 1, etc. are not polluted with waste gas (FIG. 8). (B)). The lifting operation of the adapter 10b and the operation of engaging the screw 10d "with the engaging recess 10d 'are performed using the opening 35a which is opened by removing the filter 8 from below.

[0033]

As described above, the present invention has the following advantages. (Claim 1) An umbrella-shaped food cover is placed so that its lower end abuts on the inner surface (lower surface) of the flat hood body around an upstanding flange provided around the lower opening edge of the flat hood body. It is a flat hood fan that can simultaneously support (set) the food cover inside the flat hood body and form an oil pack that collects oils and fats adhering to the hood cover. With a simple structure that does not use a special support structure only for the hood cover that presents a flat hood body that raises an upright fringe on the lower edge of the opening to prevent the adhesion of oils and fats to the inner surface of the flat hood body. An oil reservoir can also be formed, and the production cost can be significantly reduced. Moreover, since the hood cover and filter are visible from below, the means and mechanism that constitute the oil reservoir are not exposed, so the appearance is simple and the interior is not impaired. There is no baffle plate which becomes a flow path resistance of the waste gas to be sucked, and the exhaust efficiency is high. In addition, since the oil pack is provided around the opening edge of the lower surface of the flat food body, no matter what heat source of the cooking utensil is used during cooking, it does not allow oils and fats that adhere to the food cover to flow down. Can be guided to the oil pack, and the use of the cooking heat source is influenced by customs, etc., so that even if fats and oils etc. concentrate on only a certain part and adhere, it is surely collected by the oil pack. It can be versatile. (Claim 2) In addition, since the non-combustible oil-absorbing mat is fitted in the oil pack in a fitting manner, cleaning can be performed only by replacing the oil-absorbing mat, and for example, a drain for removing accumulated oil. The structure is attached, and it does not cause a decrease in interior decoration or a rise in cost. (Claim 3) In addition, since the top surface having the filter engaging / disengaging portion is inclined, the oil and fats are adsorbed and dropped more than the trapping function of the filter for absorbing and removing the oils and the like contained in the waste gas. Even if such a situation occurs, grease and the like can be reliably guided to the oil pack or the oil absorption mat by the top surface and the inclined skirt surface connected thereto. In addition, the countermeasure is achieved in a simple mode of inclination, and this can be realized without increasing the manufacturing cost as in a case where a separate member is attached and the countermeasure is complicated. (Claim 4) In addition, since the hood cover is inserted and removed from the front surface of the flat hood body, the hood cover having an area slightly larger than the lower surface opening of the flat hood body can be inserted and removed. When the hood cover itself is cleaned or maintained, the hood cover can be easily pulled out from the room side and inserted after completing various operations, so that the hood cover can be easily set. (5) A flat spring provided on the inner side of the flat-type hood body and repelling to the lower surface (lower side) of the flat-type hood body without hindering the entrance of the umbrella-shaped hood cover; When the hood cover fixing means is provided on the front side of the hood body and is constituted by a rotatable catch that presses the umbrella-shaped hood cover against the inner surface (lower surface) of the flat hood body, the removal and insertion work is performed. The food cover can be fixed stably and in a fixed position without complication. Moreover, the structure may be a simple one including a leaf spring and a rotatable catch, and the structure is simple. (Claim 6) Further, since the hood cover is provided with a height-adjustable cylindrical isolation means for bringing the upper end into contact with the inner surface (upper surface) of the flat hood body around the intake hole, the filter and the intake hole are provided. Even if the layout has a space that connects to the space behind the hood cover, it is possible to directly lead to the intake hole without soiling the back surface of the hood cover, and of course, the inner surface of the flat hood body That is, the back surface of the food cover can be kept clean, and the cleaning of the flat food body and the food cover can be further facilitated.

[Brief description of the drawings]

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

FIG. 2 is an enlarged vertical sectional view of an umbrella-shaped hood cover.

FIG. 3 is an enlarged sectional view of an oil pack portion.

FIG. 4 is a partially cutaway side view showing a state in which an oil adsorption mat is accommodated in an oil pack.

FIG. 5 is a partially cutaway side view showing a use state of a range hood fan to which an umbrella-shaped hood cover having an inclined top surface is assembled.

FIG. 6 is a perspective view schematically showing the range hood fan from below.

FIGS. 7A and 7B are cross-sectional views showing a state in which an umbrella-shaped hood cover is fixed, wherein FIG. 7A shows a state before the hood cover is inserted, and FIG. . (C) shows a state in which the hook portion is rotated to fix the hood cover.

FIG. 8 is an enlarged cross-sectional view of the isolating means, wherein (a) shows a state in which the isolating means is lowered, and (b) shows a state in which the isolating means is raised and the upper end thereof is the inner surface of the flat hood around the intake hole. It shows a state in which it is brought into contact with the portion.

[Explanation of symbols]

A: Range hood fan 1: Flat hood body 11: Ceiling 21: Intake hole 2: Blower 35: Engagement / removal part of filter 5: Hood cover 15: Top surface 6: Oil pack 51: Standing flange 6 ': Oil absorption Mat 19: Leaf spring 29: Hook 10: Isolation means 9: Fixing means 45: Space behind

[Procedure amendment]

[Submission date] April 21, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

According to a first aspect of the present invention, there is provided a flat hood body having an intake hole provided at a ceiling thereof, and an intake hole provided at an upper portion of the flat hood body. In a range hood fan to which a blower is mounted just above the hood, an umbrella-shaped hood cover having a filter engagement / disengagement portion connected to the intake hole on the top surface is provided in the flat hood body, An upright flange is provided around the opening edge of the lower surface of the mold hood body, and the lower end of the umbrella-shaped hood cover is brought into contact with the inner surface of the flat hood body at a desired distance from the upright flange. The point is that an oil pack is formed between the lower end and the upstanding flange. A second aspect of the present invention is that the cross-sectional shape of the space secured for the oil pack according to the first aspect has a shape that matches or substantially matches the cross-sectional shape of the non-combustible oil absorption mat. A third aspect of the present invention is that the top surface of the umbrella-shaped food cover according to the first or second aspect is inclined. According to a fourth aspect of the present invention, the umbrella-shaped hood cover according to any one of the first to third aspects is configured so as to be detachable from an openable front surface of a flat hood body. 5. In the flat hood body according 4 claims, the leaf spring to Tamabachi the hood downwards without inhibiting the entry of top cover of the umbrella-shaped on the back side is provided, the top cover on the front side The gist of the present invention is that a rotatable catching portion is provided for pressing the flat hood body downward. Claim 6
Around the filter engaging and disengaging portion according to claim 5 , the upper end of the filter comes into contact with the inner surface portion of the flat hood around the intake hole,
The gist of the present invention is that a height-adjustable tubular isolating means for isolating a communication space with the intake hole and a space behind the hood cover is provided.

Claims (6)

[Claims] 1. An air intake hole is provided in a ceiling of a flat hood body,
In a range hood fan in which a blower is mounted on the upper part of the flat hood body just above the air inlet, an umbrella having a filter engaging / disengaging portion on the top surface communicating with the air inlet in the flat hood body. With a hood-shaped cover,
An upright flange is provided around the lower opening edge of the flat hood body, and the umbrella-shaped hood cover has its lower end abutted on the inner surface of the flat hood body at a desired distance from the upright flange. A range hood fan wherein an oil pack is formed between the lower end portion and the upstanding flange so as to be in contact therewith. 2. The range hood fan according to claim 1, wherein a cross-sectional shape of the space reserved for the oil pack matches or substantially matches a cross-sectional shape of the non-combustible oil-absorbing mat. . 3. The range hood fan according to claim 1, wherein a top surface of the umbrella-shaped hood cover is inclined. 4. The range hood fan according to claim 1, wherein said umbrella-shaped hood cover is configured to be removable from an openable front surface of a flat hood body. 5. A flat hood is provided in the interior of the flat hood, on the back side of the hood, to repel the hood cover downward without hindering the entry of the umbrella-shaped hood cover. The range hood fan according to any one of claims 1 to 4, further comprising a rotatable catching portion for pressing the body downward. 6. A height adjustment that abuts an upper end of the filter hood around an inner surface of a flat hood around an intake hole to isolate a space between the filter and the intake hole and a space behind the hood cover. 6. The range hood fan according to claim 1, further comprising a possible cylindrical isolation means.