JP2007303705A - Filter support for ventilation fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter support for a ventilation fan capable of coping with ventilating openings of various sizes, providing a filter support body with high strength in use, and changing a maximum height of the filter support body regardless of the size of the ventilating opening. <P>SOLUTION: A pantograph structure constituted by connecting a number of links 13 disposed in a crossed state and elastically deformable, by a number of pins 14 in a multi-joint state, is applied as the filter support main body 15, and the ventilating opening 12 is covered by the filter support body 15 in the shape of arch, thus the filter support body can cope with the ventilating openings 12 of various sizes, the filter support body 15 is provided with high strength in use, and further the maximum height of the filter support body 15 can be changed regardless of the size of the ventilating opening 12. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a filter support for a ventilation fan, and more particularly to a filter support for a ventilation fan that can be fitted with a filter to a ventilation fan in a kitchen of a home kitchen or a restaurant.

For example, in a home kitchen, there is a case where a ventilation opening of a ventilation fan is covered with a filter in order to prevent contamination of the fan or motor of the ventilation fan due to inhalation of oily smoke or dust.
2. Description of the Related Art Conventionally, as a tool for mounting a filter on a ventilation port, for example, a ventilation fan cover that covers the entire ventilation port with a rectangular frame of a plastic molded product on which the filter is stretched is known. However, in the case of the conventional ventilation fan cover, since it was 1 size per product, a ventilation fan cover having a different size was required depending on the size of the ventilation port.

Thus, in recent years, a ventilation fan filter support device has been developed that can be adjusted in size according to the size of the ventilation port (for example, Patent Document 1).
Patent Document 1 uses a flat plate-like support frame (filter support main body) that can be bent around an intermediate portion in the length direction as a main body. In use, the bending angle of the planar support frame is changed according to the size of the ventilation port, and then the folded planar support frame is put on the ventilation port. Then, the filter is mounted on the ventilation fan frame from above the flat support frame.
JP 2005-195299 A

However, in Patent Document 1, as described above, the planar support frame is configured by a flat plate that is bent in a V shape from an intermediate portion in the length direction. Therefore, when the bending angle of the planar support frame is changed according to the size of the ventilation port, the maximum height of the planar support frame (the height of the intermediate portion in the length direction) also changes.
For example, if the maximum height of the planar support frame is too low, the distance between the ventilation port and the central portion of the planar support frame is shortened, and the filter is greatly affected by the negative pressure of the fan. As a result, the collected oil may pass through the filter and contaminate the fan behind. Further, if the maximum height is too high, there is a risk that it is difficult to use the space near the ventilation fan in a generally small kitchen. In addition, when a large amount of oil is attached to the filter after long-term use, the floor area contaminated with oil increases when the maximum height of the oil drops falls from the filter.
A flat support frame that is bent into a V-shape is difficult to obtain sufficient hardness as a plate material.

  Therefore, as a result of intensive research, the inventor can be mounted on various sizes of ventilation openings by adopting a pantograph-structured filter support body instead of the conventional flat support frame of the V-shaped bending method. In addition, the overall shape of the filter support body in use is easy to form an arch shape with high strength, and the maximum height of the filter support body is maintained at the optimum height even if the size of the ventilation port is different. The present invention has been completed.

The present invention can deal with various sizes of ventilation openings, and can increase the strength of the filter support body in shape in use, and the filter support body can be used regardless of the size of the ventilation openings. It aims at providing the filter support for ventilation fans which can change maximum height.
Another object of the present invention is to provide a filter support for a ventilation fan that can be easily attached to and detached from the ventilation fan.

  The invention according to claim 1 is a ventilation fan comprising: a filter support body on which a filter covering a ventilation opening of a ventilation fan frame is extended; and a support fixing member attached to the ventilation fan frame and connected to the filter support body. A filter support for a ventilation fan, wherein the filter support main body is a pantograph structure.

According to the first aspect of the present invention, the length (expansion / contraction) of the filter support body is adjusted in accordance with various ventilation port sizes. Since the filter support body employs a pantograph structure in which a large number of links (connecting members) are connected to a multi-joint, it can be used for various sizes of ventilation openings.
The filter support main body whose length is adjusted in this way is attached to the ventilation fan frame in an arch shape having high shape, for example, via the support fixing member, and the ventilation opening is covered with the filter support main body. Thus, if the external shape of the filter support body is an arch shape that is structurally higher in strength than the V-shape, for example, even if the motor of the ventilation fan has a large output and a large suction force of the fan, It is difficult for the filter support body to be deformed by negative pressure.

In addition, as the filter support body, a pantograph structure in which a large number of crossed links are connected indirectly by a large number of pins is used, and this is attached to the ventilation fan frame in an arch shape using a support fixing member. Therefore, the maximum height of the filter support body can be freely changed regardless of the size of the ventilation port.
That is, if the maximum height of the filter support body is too high, the maximum height of the filter support body can be increased by increasing the distance between the ends of adjacent links arranged at both ends in the expansion / contraction direction of the filter support body. Can be lowered to an optimum value, for example. On the other hand, when the maximum height is too low, the interval between the ends of the adjacent links can be reduced, for example, to increase the maximum height to an optimum value.

  Accordingly, the distance between the filter and the fan can be optimized even when the filter support for the ventilation fan is attached to the ventilation fan frame having a ventilation port of any diameter. As a result, the oil collected in the filter can pass through the filter, reducing the risk of fouling the fan behind, and can effectively use the space near the ventilation fan, and a large amount of oil adheres to the filter. In addition, it is possible to reduce the floor area that is soiled with oil droplets falling from the filter.

As a ventilation fan to which the present invention is applied, for example, various household ventilation fans, various commercial ventilation fans, and the like can be employed. The ventilation fan may be installed on the side wall of the building or may be installed on the ceiling of the building.
The material of the ventilation fan frame is arbitrary. For example, various synthetic resins (polypropylene, polyethylene, polyvinyl chloride, fluorine-containing resins including ABS, etc.), various metals (iron, stainless steel, aluminum, etc.), and various trees (cedar, oak, pine, paulownia, oak, etc.) Various ceramics can be used.

The external shape of the ventilation fan frame is arbitrary. For example, it may be a circular shape, an elliptical shape, or a polygonal shape including a triangle including a quadrangle when the ventilation port is viewed from the front. Moreover, arbitrary shapes may be sufficient.
The size of the ventilation fan frame is appropriately changed depending on the size of the ventilation opening.
In the ventilation fan frame, both side portions centered on the ventilation port are, for example, portions of line symmetry about the center line of the ventilation port in the frame plate (front plate) on which the ventilation port is formed. In addition, among the outer peripheral frame plates of the ventilation fan frame, a line-symmetrical portion around the center line of the ventilation port may be used.
The size (diameter) of the ventilation port (fan) is arbitrary. For example, it is 15 cm, 20 cm, 25 cm for general households and 30 cm for business use. Examples of the shape of the ventilation port as viewed from the front include, for example, a circle, an ellipse, and a polygon more than a triangle.

  The material of the link that is the main component of the filter support body is arbitrary. For example, various synthetic resins (polypropylene, polyethylene, polyvinyl chloride, fluorine-containing resins including ABS, polyurethane resins, etc.) and various metals (iron, stainless steel, aluminum, copper, nickel, bronze, brass, etc.) should be adopted. Can do. It is preferable that the link is elastically deformable because the filter support body can be easily formed into an arch shape when the filter support for a ventilation fan is used. Of course, the link may be a rigid body, and the arch shape may appear by using the backlash of the pin coupling portion between adjacent links.

The shape of the link is arbitrary. For example, a strip plate shape may be used. The number of links used is four or more because at least one parallelogram must be defined.
The elastic force of the link is such that when the filter support for a ventilation fan is attached to the ventilation port of the minimum size, the center of the filter support body is recessed through the ventilation port into the ventilation path of the ventilation fan frame due to the suction force (negative pressure) of the fan. It is enough if it is not.
The pin hole for connecting pins formed on the link may be formed with a plurality of pin holes corresponding to one pin. Thereby, the pitch between links can be changed. For example, the number of links used can be reduced by increasing the pitch.

The material for the support fixing member is arbitrary. For example, various synthetic resins (polypropylene, polyethylene, polyvinyl chloride, fluorine-containing resin including ABS, polyurethane resin, ethylene vinyl acetate copolymer resin, methacrylic resin, etc.), various metals (iron, stainless steel, aluminum, bronze, brass) Etc.) can be employed.
The total number of the support fixing members used is arbitrary, for example, two or more. The number of links connected to each support fixing member is also arbitrary. One support fixing member may be attached to one link, or two or more links may be attached to one link.

For example, it is configured so that a plurality of links are respectively attached to each support fixing member, and each connection portion between each support fixing member and each corresponding link has a length corresponding to the expansion / contraction length of the filter support body. You may make it arrange | position the position change structure which changes the connection position of a link. When the position changing structure is used, the maximum height of the filter support main body can be easily adjusted when the vent hole is covered with the filter support main body whose length is adjusted in accordance with various vent hole sizes.
As the position changing structure, for example, a pin coupling structure including a pin and a pin hole (through hole), a bolt / nut structure, a male / female engagement body including a male engagement member and a female engagement member, and the like may be employed. it can. In the case of a pin hole, a plurality of pin holes may be employed or a long hole may be employed.

  The invention according to claim 2 is the filter support for a ventilation fan according to claim 1, wherein a filter hooking member for hooking a filter placed on the ventilation port is provided on an outer peripheral portion of the ventilation fan frame.

  According to the second aspect of the present invention, since the filter placed on the ventilation port is hooked on the filter hooking member via the filter support body, the filter can be easily attached to and detached from the ventilation fan. That is, in the conventional product, the ventilation fan frame is removed from the ventilation fan main body, the peripheral edge portion of the filter is turned inside the peripheral side frame plate of the ventilation fan frame, and the ventilation fan frame is attached to the ventilation fan main body again.

The outer peripheral portion of the ventilation fan frame may be the outer edge portion of the front plate of the ventilation fan frame or the outer peripheral frame plate of the ventilation fan frame. The installation position of the filter hooking member on the outer periphery of the ventilation fan frame is arbitrary. For example, the corner part of an outer periphery frame board may be sufficient, and the center part of an outer periphery frame board, etc. may be sufficient.
The material of the filter hooking member is arbitrary. For example, various synthetic resins (polypropylene, polyethylene, polyvinyl chloride, ABS-containing fluororesin, ethylene vinyl acetate copolymer resin, acrylic resin, etc.) and various metals (iron, stainless steel, aluminum, bronze, brass, etc.) Can be adopted.
The shape of the filter hooking member is arbitrary. For example, plate shape, pin shape, mountain shape, wave shape and the like can be mentioned.

  According to the first aspect of the present invention, since the pantograph structure is adopted as the filter support body, and the ventilation hole is covered in an arch shape by the filter support body with the filter, it corresponds to the ventilation holes of various sizes. In addition, the filter support main body in use has high strength, and the maximum height of the filter support main body can be changed regardless of the size of the ventilation port.

  In particular, according to the second aspect of the present invention, when the filter support body covering the ventilation port is covered with the filter and the filter support body is fixed to the ventilation fan frame, the outer periphery of the filter is hooked to the filter hooking member. Therefore, the filter can be easily attached to and detached from the ventilation fan.

  Examples of the present invention will be specifically described below.

  1 to 4, reference numeral 10 denotes a ventilation fan filter support, and this ventilation fan filter support 10 covers a ventilation opening 12 of a ventilation fan frame 11 and is elastically deformable in a large number of parallelograms. A telescopic pantograph structure filter support body 15 in which the links 13 are connected to each other by a pin 14 so as to be rotatable at each crossing position, and attached to both side portions of the ventilation fan frame 11 with the ventilation port 12 as a center, and A support fixing member 16 to which links 13 arranged at both ends of one of the filter support main bodies 15 in one expansion / contraction direction (one diagonal direction of the parallelogram) are connected, and a side frame plate (outer peripheral portion) of the ventilation fan frame 11 ) And a filter retaining member 19 for retaining the filter 18 that covers the ventilation port 12.

Hereinafter, these components will be described in detail.
The ventilation fan 20 is installed on the side wall of a kitchen in a general household. The ventilation fan 20 includes a ventilation fan body 23 attached to a central portion of a rectangular base frame 22 by a motor (not shown) with a fan (blade) 21, and a ventilation fan frame 11 hooked on the ventilation fan body 23. The main component. The ventilation fan frame 11 includes a front plate 24 in which a large-diameter ventilation port 12 is formed in a central area, four rectangular side frame plates 17 connected to each side of the front plate 24, and the ventilation port 12. It has a cylindrical plate 33 that communicates with one opening and is connected to the central portion of the front plate 24. The internal space of the cylindrical plate 33 serves as a ventilation path a that also serves as a storage space for the fan 21 and the motor.

  The filter support body 15 is a pantograph (four-bar rotation mechanism) type expansion and contraction frame. The link 13 includes four long first links 13A and four short second links 13B. The first link 13A is a polypropylene plate having a length of about 295 mm, a width of about 10 mm, and a thickness of about 2 mm. The second link 13B is a plate material made of the same polypropylene having a length of about 255 mm, a width of about 10 mm, and a thickness of about 2 mm. The filter support main body 15 is a member in which eight links 13 are assembled so that parallelograms are continuous vertically and horizontally. Therefore, the filter support main body 15 expands and contracts in both diagonal directions of the parallelogram. The links 13A and 13B are thin and thin plastic plates. Therefore, according to the size of the ventilation fan frame 11, the length may be appropriately cut with a scissors.

  Of each of the four links 13A, 13B, two are arranged on the front side of the filter support body 15, and the remaining two are arranged on the back side. Four pin holes 35 are formed at a predetermined pitch in the first link 13A arranged on the front side (FIG. 4B). Three pin holes 35 are formed at a predetermined pitch in the second link 13B arranged on the front side. Further, four pins 14 are integrally formed of the same material as the first link 13A at a predetermined pitch on the surface of the first link 13A arranged on the back side (FIG. 4B). Three pins 14 are integrally formed of the same material as the second link 13B at a predetermined pitch on the surface of the second link 13B arranged at the back side. The lattice-like filter support body 15 is assembled by hooking each pin 14 to the corresponding pin hole 35. A fixing pin 30 used for fixing the filter support body 15 to the support fixing member 16 is formed integrally with the second link 13B at one end portion in the length direction of each second link 13B. Has been.

  In addition, while increasing the formation number of the pin hole 35 to both link 13A, 13B arrange | positioned on the front side, and increasing the formation number of the pin 14 to both link 13A, 13B arrange | positioned on the back side, the connection of each link 13 is carried out. The pitch can be adjusted. If the connection pitch is reduced, the number of the links 13A and 13B can be increased in accordance with the size of the ventilation fan frame 11, and the filter support body 15 can be formed into a dense lattice shape. Further, if the connection pitch is increased, the number of the links 13A and 13B can be reduced according to the size of the ventilation fan frame 11, and the filter support body 15 can be formed into a rough lattice shape.

  The support fixing member 16 is a rectangular plate made of polypropylene, and the length of the intermediate portion in the length direction of the side frame plate 17 disposed on the right side of the ventilation fan frame 11 and the length of the side frame plate 17 disposed on the left side. Affixed to the middle part of the direction. The support fixing member 16 is bent to the outer side of the fixing plate piece 25A having a double-sided tape (not shown) attached to the back surface and the fixing plate piece 25A by several tens of degrees outward from the back side. And a connecting plate piece 25. A pair of fixing pin holes 31 to which the corresponding fixing pins 30 are hooked are provided at both ends in the length direction of the connecting plate piece 25 with a predetermined interval in the length direction of the connecting plate piece 25. It is arranged. In both of the support fixing members 16, a pair of fixing pin holes 31 arranged outside or a pair of fixing pin holes 31 arranged inside are provided with fixing pins 30 of the corresponding second link 13 </ b> B. It is hooked.

  The filter retaining members 19 are made of polypropylene, and are respectively disposed at the four corners of the ventilation fan frame 11. Each filter hooking member 19 has a rectangular base plate piece 26 in front view that is attached to each corner of the front plate 24 via a double-sided tape (not shown) attached to the back surface, Each of the base small plate pieces 26 has a pair of rectangular small plate pieces 27 that are integrally formed with a pair of adjacent side portions and bent several tens of degrees outwardly on the back side. A part of the outer peripheral portion of the filter 18 is latched to the both latching small plate pieces 27.

Next, the usage method of the filter support 10 for ventilation fans is demonstrated in detail.
As shown in FIGS. 1 to 4, first, an intermediate portion in the length direction of the side frame plate 17 arranged on the right side of the ventilation fan frame 11 and an intermediate portion in the length direction of the side frame plate 17 arranged on the left side. In addition, a pair of support fixing members 16 are attached to each other through a double-sided tape. Thereby, the bending direction of the connecting plate piece 25 faces the inside of the ventilation fan frame 11. Moreover, the four filter latching members 19 are each stuck on the four corners of the front plate 24 of the ventilation fan frame 11 via a double-sided tape. Further, the filter support main body 15 is expanded and contracted in accordance with the sizes of various ventilation ports 12 (the crossing angle of the links 13 crossed is changed). Since the filter support main body 15 has a pantograph structure in which a large number of links 13 are connected in a multi-indirect manner, the filter support main body 15 can correspond to various sizes of the ventilation openings 12.

  Next, the filter support main body 15 whose length has been adjusted is attached to the ventilation fan frame 11 in an arch shape via a pair of support fixing members 16 and a second link 13B connected thereto. Thus, since the external shape when the filter support body 15 is used is an arch shape having a high strength structure, for example, even when the motor of the ventilation fan 20 has a large output and the suction force of the fan 21 is large, the negative pressure causes It is difficult to cause deformation of the filter support body 15.

  At the time of connecting the second links 13B to both the support fixing members 16, the second pin corresponding to the pair of fixing pin holes 31 arranged outside or the pair of fixing pin holes 31 arranged inside is provided. The fixing pin 30 of the link 13B is hooked. Moreover, in the filter support 10 for the ventilation fan, the maximum height of the filter support body 15 whose length is adjusted according to the size of the ventilation port 12 can be adjusted to an optimum value. Specifically, if the maximum height of the filter support main body 15 whose length has been adjusted is too high, the second links 13B are respectively engaged with the fixing pin holes 31 arranged outside the support fixing member 16. Stop. On the other hand, when the maximum height of the filter support main body 15 whose length has been adjusted is too low, the second links 13B are respectively hooked on the fixing pin holes 31 arranged inside the support fixing member 16. With such a simple operation, the ventilation fan filter support 10 can be set to the ventilation fan frame 11 at an ideal maximum height.

  As described above, since the maximum height of the filter support body 15 whose length has been adjusted can be adjusted to the optimum value, the distance between the filter 18 and the fan 21 is too close, and the negative pressure of the fan 21 is affected. , And the oil collected in the filter 18 passes through the filter 18 to reduce the risk of contaminating the fan 21 behind. On the contrary, it is possible to avoid a situation in which the distance between the filter 18 and the fan 21 is too far and the space near the ventilation fan 20 cannot be effectively used, and when a large amount of oil adheres to the filter 18, It is possible to reduce the floor area dirty with the dropped oil droplets.

Thereafter, the filter 18 is put on the ventilation port 12 through the filter support main body 15, and the rubber bands 34 provided on the outer peripheral portion of the filter 18 are respectively hooked on the pair of hooking small plate pieces 27. Thereby, attachment / detachment of the filter 18 to the ventilation fan 20 is facilitated. That is, in the conventional product, the ventilation fan frame is removed from the ventilation fan main body, the peripheral edge of the filter is turned inside the peripheral frame plate of the ventilation fan frame, and the ventilation fan frame is attached to the ventilation fan main body again.
A pair of cords are bridged between the one end portions and the other end portions of the support fixing members 16, and the links 13 correspond to the links 13 arranged in the other expansion / contraction direction of the filter support body 15. You may connect the edge part to perform, respectively. By comprising in this way, the filter support main body 15 can be elastically deformed to a dome shape, and also the filter support main body 15 becomes high in shape.

It is a perspective view of the use condition after adjusting the height of the filter support for ventilation fans concerning Example 1 of this invention. It is a perspective view of the use condition before adjusting the height of the filter support for ventilation fans concerning Example 1 of this invention. It is a front view of the expansion | extension state of the filter support main body of the filter support tool for ventilation fans which concerns on Example 1 of this invention. (A) It is a front view of the contraction state of the filter support main body of the filter support for ventilation fans concerning Example 1 of this invention. (B) It is an expanded sectional view which shows the link connection state of this filter support main body.

Explanation of symbols

10 Filter support for ventilation fan,
11 Ventilation fan frame,
12 Ventilation opening,
15 filter support body,
16 Support fixing member,
17 Side frame plate (outer periphery),
18 filters,
19 Filter retaining member.

Claims (2)

A filter support body on which a filter covering the ventilation opening of the ventilation fan frame is extended;
A filter support for a ventilation fan, comprising a support fixing member attached to the ventilation fan frame and connected to the filter support body,
A filter support for a ventilation fan, wherein the filter support body is a pantograph structure.   The filter support for a ventilation fan according to claim 1, wherein a filter hooking member for hooking a filter placed on the ventilation port is provided on an outer peripheral portion of the ventilation fan frame.

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