JP2020169770A - Exhaust treatment equipment for kitchen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily install an exhaust treatment device 1 for removing oil mist and deodorizing from exhaust generated in a kitchen. SOLUTION: An exhaust treatment device 1 includes a square cylindrical housing 11 having a door 11c, and a filter 12 housed in a housing 11 in multiple stages. The filter 12 includes a filter for removing oil mist and a deodorizing filter. A mounting rail 18 is attached to the lower end opening of the weather cover 2 provided so as to cover the exhaust port that opens in the outer wall of the building, and the flange portion 19 at the upper end of the housing 11 is engaged with the mounting rail 18 in the front-rear direction. By sliding, the housing 11 is attached to the weather cover 2. The housing 11 is fastened to the weather cover 2 by the clamp members on the left and right sides. [Selection diagram] Fig. 3

Description

The present invention relates to an exhaust treatment device that deodorizes exhaust gas generated in a kitchen, removes oil, and the like, and particularly relates to a relatively simple exhaust treatment device connected to a weather cover that covers an exhaust port of an outer wall of a building.

For example, in a kitchen such as a restaurant, exhaust gas containing odor and oil is generated when fried food is cooked, so it is necessary to forcibly discharge it to the outside using a fan. Patent Document 1 is configured to collect exhaust gas by a hood provided above the countertop and discharge it to the outside of the building through a duct provided with a fan in the middle portion, and for deodorizing in a duct downstream of the fan. An exhaust treatment device in which the above filter is arranged is disclosed. The duct extending from the hood to the outer wall of the building is usually piped using the space inside the ceiling of the kitchen, and the filter is similarly arranged in the space inside the ceiling.

Japanese Unexamined Patent Publication No. 2001-218823

An exhaust treatment device as in Patent Document 1 has a relatively large-scale configuration, and is often difficult to install when an existing store is converted into a restaurant.

In addition, relatively small restaurants and convenience stores often have only a simple exhaust system that exhausts air to the outside by a fan, but it is required to remove odors and oil from neighboring houses. In such a case, it cannot be easily dealt with.

Therefore, an object of the present invention is to provide a novel kitchen exhaust treatment device that can be easily installed outside a building.

The kitchen exhaust treatment device according to the present invention is
A square tubular housing in which the upper end surface opens as an exhaust inlet, the lower end surface opens as an exhaust outlet, and one side surface is a door that can be opened and closed.
A filter that is arranged in multiple stages inside this housing and can be replaced through the door,
Be prepared for
The upper end of the housing is connected to the lower surface opening of the weather cover that covers the exhaust port opened in the outer wall of the building.

That is, in general, the exhaust generated in the kitchen is collected by a hood or the like, and is forcibly discharged to the outside through an exhaust port on the outer wall of the building by an appropriate fan. The exhaust port that opens to the outer wall of the building is covered with a weather cover that serves as a roof to prevent the intrusion of wind and rain. The weather cover has, for example, a ceiling surface curved so as to change the flow direction of the exhaust gas by 90 °, and the lower surface is opened so that the exhaust gas flows downward.

The exhaust treatment device of the present invention is attached in a form in which a square tubular housing is connected to the lower surface opening of the weather cover. Therefore, the exhaust gas flows downward in the housing, is purified by an internal filter (for example, deodorization and removal of oil), and then is discharged from the exhaust outlet at the lower end of the housing.

One side of the housing can be opened and closed as a door, and the filter can be replaced or the filter can be taken out and cleaned.

The weather cover may be an existing one already attached to the building, or may be newly provided to attach the exhaust treatment device of the present invention.

In one preferred embodiment of the present invention, mounting rails having a substantially U-shaped cross section are provided on three sides of the peripheral edge of the lower surface opening of the weather cover.
Flange portions that slidably engage with the mounting rail are provided on three sides of the peripheral edge of the upper end of the housing.
The housing is attached to the weather cover by sliding the housing along the mounting rails.

In such a configuration, the entire housing provided with the filter can be removed from the weather cover for cleaning and the like.

Moreover, in one preferable aspect of the present invention,
Sealing members are provided over four sides between the lower surface opening of the weather cover and the upper end of the housing.
At least a pair of clamp members are arranged on the outer wall surface so as to fasten the housing toward the weather cover so as to sandwich the seal member.

Therefore, by tightening the clamp member, the sealing member is narrowed between the housing and the weather cover, and the two are sealed.

In one embodiment of the present invention, at least one stage of the filters arranged in multiple stages is a deodorizing filter. In addition, a filter for removing oil and a deodorizing filter can be used in combination.

For example, each stage of the filter is configured by arranging a plurality of plate-shaped filters in a shape in which a plurality of V-shapes are continuous.

Further, in one embodiment of the present invention,
A second square tubular housing is connected to the lower end of the housing.
An auxiliary fan is housed in this second housing.

The addition of such an auxiliary fan offsets the increase in pressure loss due to the intervention of the filter and ensures a sufficient flow rate.

According to the present invention, an exhaust treatment device can be easily installed without requiring a large-scale construction in a kitchen or the like inside a building, and cleaning of exhaust gas generated in the kitchen in a small restaurant or a convenience store or the like can be performed. Is possible.

The perspective view which shows the exhaust treatment apparatus which concerns on this invention attached to the weather cover. Sectional view showing exhaust treatment equipment and weather cover together with a part of a building. The perspective view which shows the state which the exhaust treatment apparatus is removed from a weather cover. An exploded perspective view showing the mounting rail on the weather cover side disassembled. The cross-sectional view which shows the structure inside the housing. Cross-sectional view of the mounting rail portion along the cross section in the left-right direction. Cross-sectional view of the mounting rail portion along the cross section in the front-rear direction. Cross-sectional perspective view of the mounting rail part. (A) side view and (b) front view of the clamp member. The cross-sectional view which shows the 2nd Example which provided the rectification guide inside the weather cover together with a part of a building. FIG. 3 is a perspective view showing a third embodiment provided with an auxiliary fan. FIG. 5 is a cross-sectional view showing a third embodiment provided with an auxiliary fan together with a part of the building. An exploded perspective view of the third embodiment.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

1 to 4 show the kitchen exhaust treatment device 1 of the first embodiment together with the weather cover 2.

As shown in FIG. 2, generally, the exhaust generated in the kitchen is collected in the duct 4 piped inside the building 3 and discharged to the outside from the exhaust port 6 opened in the outer wall 5 of the building 3. The duct 4 is provided with a fan (not shown) at an appropriate position in the flow path, and forced exhaust is performed by this fan. The duct 4 is piped through, for example, a space between the ceiling wall 7 of the skeleton of the building 3 and the ceiling interior material 8. In a simple kitchen, the end of the duct 4 exposed in the kitchen may be connected to an exhaust port 6 located below the ceiling surface.

The exhaust port 6 generally has a square or a rectangular opening shape close to a square. A weather cover 2 serving as a roof is attached to the outer wall 5 of the building 3 in order to prevent wind and rain from entering the exhaust port 6, and the exhaust port 6 is covered by the weather cover 2. .. The weather cover 2 has a front surface 2a and an upper surface 2b facing the exhaust port 6 continuous via an arc surface 2c having an appropriate radius of curvature, a pair of side surfaces 2d facing each other, and a square on the lower surface. The opening 2e is provided. In the illustrated example, the opening 2e on the lower surface is orthogonal to the mounting surface with respect to the exhaust port 6. That is, the exhaust flow is configured to be guided downward by changing the direction by 90 °, and the lower surface opening 2e is basically horizontal.

The kitchen exhaust treatment device 1 of the present invention is installed by using the weather cover 2 normally provided for the exhaust port 6 as described above. As shown in FIGS. 1 and 3, the kitchen exhaust treatment device 1 is formed in a rectangular parallelepiped shape as a whole. That is, the exhaust treatment device 1 includes a square tubular housing 11 having a size corresponding to the lower surface opening 2e of the weather cover 2, and filters 12 arranged in multiple stages inside the housing 11. It is composed of.

The housing 11 is formed of a metal plate such as stainless steel or a steel plate, and the upper end surface is opened as an exhaust inlet 11a and the lower end surface is opened as an exhaust outlet 11b. Then, one side surface is configured as a door 11c that can be opened and closed. The door 11c is configured to rotate about one side edge as a hinge center as shown in FIG. 3, and is fixed in a closed state by an appropriate latch member 13 as shown in FIG. In one embodiment, the exhaust inlet 11a is formed in a square shape corresponding to the lower surface opening 2e of the weather cover 2.

FIG. 5 shows a specific arrangement of the filter 12 inside the housing 11. As shown in the figure, in this embodiment, the filters 12 are arranged in three stages. Each stage is configured by arranging six plate-shaped filters 12a in a so-called zigzag shape so as to form a continuous shape of three V-shapes. Then, the V-shape of the first-stage filter 12 on the exhaust inlet 11a side overlaps the inside of the V-shape of the second-stage filter 12, and the V-shape of the second-stage filter 12 is the third stage on the exhaust outlet 11b side. The plate-shaped filters 12a of each stage are arranged so as to overlap the inside of the V-shape of the filters 12 of the above. More specifically, as shown in FIG. 5, a channel-shaped filter rail 15 to which the upper and lower end edges of the plate-shaped filter 12a are fitted is attached to the inside of the housing 11, and the plate-shaped filter is provided by the filter rail 15. Each of 12a is held. As shown in FIG. 3, one end of the filter rail 15 in the longitudinal direction faces the opening surface opened and closed by the door 11c, and by sliding the plate-shaped filter 12a along the filter rail 15, the housing 11 The plate-shaped filter 12a can be taken in and out of the door. The exhaust outlet 11b at the lower end of the housing 11 is provided with a wire mesh 16 having a relatively coarse mesh for preventing the invasion of birds and the like.

As the filter 12, a filter having appropriate characteristics can be used depending on the intended use, and filters having different characteristics can be used in combination. In one embodiment, an oil mist filter that mainly removes oil is used as the first-stage filter 12 and the second-stage filter 12, and activated carbon is used as the final-stage third-stage filter 12. A deodorizing filter sandwiched between non-woven fabrics is used. By using such a combination of filters, it is possible to remove the oil mist in the exhaust gas discharged from the kitchen and to deodorize the oil mist.

4 and 6 to 8 show the attachment structure of the exhaust treatment device 1 to the weather cover 2. As shown in FIG. 6, a mounting rail 18 having a substantially U-shaped cross section is attached to the peripheral edge of the lower surface opening 2e of the weather cover 2 via a support plate 17 having a substantially L-shaped cross section. The support plate 17 and the mounting rail 18 are made of a metal plate and are preliminarily integrated by, for example, spot welding. Then, the support plate 17 is attached to the lower edge of the weather cover 2 via a screw or the like (not shown). The mounting rail 18 is arranged so that the opening of the U-shaped cross section faces the inner peripheral side of the lower surface opening 2e, and the trailing edge and the left and right side edges of the lower surface opening 2e have the same substantially U-shaped cross-sectional shape. There is. At the front edge of the lower surface opening 2e, as shown in FIG. 7, the mounting rail 18 has a substantially L-shaped cross section with the lower portion cut out. In other words, there is a mounting rail 18 having a substantially U-shaped cross section along the three sides of the trailing edge and the left and right side edges, and the front edge does not function as a mounting rail. The support plate 17 is provided over the entire circumference of the four sides of the lower surface opening 2e.

With respect to the mounting rail 18, flange portions 19 extending toward the outer peripheral side are continuously provided on four sides on the peripheral edge of the exhaust inlet 11a at the upper end of the housing 11. The flange portion 19 is formed along one plane that is horizontal in the mounted state of the exhaust treatment device 1. In the illustrated example, the opening edge of the exhaust inlet 11a has a bent portion 11d that is bent toward the inner peripheral side, and the flange plate 20 having a substantially U-shaped cross section is mounted on the bent portion 11d. , A flange portion 19 extending to the outer peripheral side is formed. The bent portion 11d and the flange plate 20 are joined by, for example, spot welding.

The flange portion 19 is sized so as to be slidably engaged with the mounting rail 18. As a result, as is clear from FIG. 6, the housing 11 is attached to the lower surface opening 2e of the weather cover 2 by sliding the housing 11 rearward while engaging the flange portion 19 with the mounting rail 18. Can be done. In the illustrated example, the flange portions 19 are provided on the four sides, but only the three sides excluding the front edge engage with the mounting rail 18.

As shown in FIG. 1, clamps inserted along the mounting rails 18 are clamped to the outer wall surfaces of the weather cover 2 and the housing 11 on both the left and right sides so as to pull up the housing 11 toward the weather cover 2. For example, two members 21 are arranged. By fastening the clamp member 21, the housing 11, that is, the entire exhaust treatment device 1, is firmly fixed to the lower end of the weather cover 2.

As shown in FIGS. 6 and 7, a sealing member 22 made of rubber or the like is provided on the upper surface of the flange portion 19 over the entire circumference of the exhaust inlet 11a. The seal member 22 faces the inner upper surface 18a of the mounting rail 18 having a substantially U-shaped cross section. 6 and 7 are cross-sectional views taken at the stage where the clamp member 21 is not tightened. In this state, the seal member 22 is separated from the inner upper surface 18a, and therefore, the above-mentioned housing 11 is attached. It can slide back and forth on the rail 18. When the housing 11 is tightened upward toward the weather cover 2 by fastening the clamp member 21, the sealing member 22 is narrowed between the flange portion 19 and the inner upper surface 18a of the mounting rail 18 (FIG. 9A). reference). As a result, the space between the weather cover 2 and the housing 11 is sealed.

FIG. 7 shows the sealing structure at the front edge and the trailing edge of the lower surface opening 2e of the weather cover 2. At the trailing edge, similarly to the left and right side edges shown in FIG. 6, the flange portion 19 enters into the substantially U-shaped mounting rail 18 that opens toward the inner peripheral side, and the flange portion 19 and the mounting rail 18 The sealing member 22 is narrowed to and from the inner upper surface 18a. On the other hand, at the front edge, the lower half of the mounting rail 18 is cut out as described above, and when the clamp member 21 is not tightened, the sealing member 22 and the mounting rail are used when the housing 11 is slid back and forth. Does not interfere with 18. Then, when the housing 11 is tightened upward by the clamp member 21, the seal member 22 is pressed against the inner upper surface 18a of the mounting rail 18 as in the other three sides. Therefore, the sealing by the sealing member 22 is ensured on the four sides including the front edge.

9 (a) and 9 (b) show the clamp member 21. The clamp member 21 used in the embodiment is a commercially available general-purpose part called a “catch clip”, and is a lever 32 rotatably supported by a base 31 fixed to the weather cover 2 with screws or the like, and the lever. It includes an engaging pin 34 linked to the 32 via a pair of springs 33, and a hook 35 fixed to the outer surface of the housing 11 with a screw or the like. FIG. 9 shows a state in which the clamp member 21 is fastened, and the engaging pin 34 is urged upward in the drawing by the tensile force of the spring 33. As a result, as described above, the seal member 22 is narrowed between the flange portion 19 and the inner upper surface 18a of the mounting rail 18. When the lever 32 is pulled down from this state, the engaging pin 34 is disengaged from the hook 35. Therefore, as described above, the housing 11 can be pulled forward along the mounting rail 18.

The latch member 13 for closing the door 11c can also be configured by using the same general-purpose parts as the clamp member 21 described above.

As shown in FIG. 2, in the state where the exhaust treatment device 1 is attached, the exhaust generated in the kitchen is directed to the exhaust port 6 through the duct 4 by a fan (not shown), and goes to the exhaust treatment device 1 through the weather cover 2. It flows. The exhaust gas that has flowed into the exhaust treatment device 1 is deodorized while the oil mist is removed by the filter 12, and is discharged to the outside from the exhaust outlet 11b at the lower end of the housing 11.

As described above, in the kitchen exhaust treatment device 1 of the above embodiment, the weather cover 2 provided so as to cover the exhaust port 6 on the outer wall 5 of the building 3 is used and connected to the lower end of the weather cover 2. It can be installed easily. As a result, for example, when cooking and sales of fried chicken and the like are started after the fact at a convenience store, the necessary exhaust gas purification treatment can be easily performed.

When an existing weather cover 2 is used, the mounting rail 18 can be attached to the lower surface opening 2e of the weather cover 2 via the support plate 17, and the clamp member 21 (the portion on the base 31 side) can be attached to the side surface 2d. Just do it. Therefore, the exhaust treatment device 1 can be easily installed without requiring a large-scale construction.

When the filter 12 becomes dirty due to long-term use, the door 11c can be opened to take out the filter 12, and the filter 12 can be cleaned or replaced. Further, if necessary, the entire exhaust treatment device 1 can be removed from the weather cover 2 for cleaning or the like.

Further, in the above embodiment, the lower surface opening 2e of the weather cover 2 is square, and correspondingly, the exhaust inlet 11a and the flange portion 19 at the upper end of the housing 11 are square. Therefore, if necessary, the exhaust treatment device 1 can be attached to the weather cover 2 in a posture in which the door 11c of the housing 11 faces the side surface 2d of the weather cover 2. As a result, the plate-shaped filter 12a can be inserted and removed along the direction parallel to the outer wall 5.

As the weather cover 2, the existing one can be used, or it can be newly installed together with the exhaust treatment device 1.

FIG. 10 shows a second embodiment in which the rectifying guide 41 is provided inside the weather cover 2 as a suitable one when the weather cover 2 is newly installed. The rectifying guide 41 is curved in an arc shape along the arc surface 2c of the weather cover 2, and extends around the flow path inside the weather cover 2 from the exhaust port 6 of the outer wall 5 to the lower surface opening 2e of the weather cover 2. It is divided into two areas, one on the side and the other on the inner circumference.

In the configuration provided with such a rectifying guide 41, the distribution of the flow flowing into the filter 12 becomes relatively uniform, and oil mist can be removed and deodorized more efficiently. The arrows in the figure indicate the distribution of the flow of the exhaust gas flowing into the exhaust gas treatment device 1. That is, when the rectifying guide 41 is not provided, assuming that the exhaust gas flows out evenly from the exhaust port 6 at the tip of the duct 4, the weather cover 2 changes the direction of the flow by 90 ° and flows into the exhaust gas treatment device 1. The flow is biased toward the front surface 2a of the weather cover 2. Therefore, the entire filter 12 arranged as shown in FIG. 5 cannot always be effectively used. On the other hand, by providing the rectifying guide 41, a part of the exhaust gas flows along the rectifying guide 41, and the entire filter 12 can be used more effectively.

Next, FIGS. 11 to 13 show a third embodiment in which an auxiliary fan 51 is added on the downstream side in order to compensate for the pressure loss caused by the exhaust treatment device 1. In the third embodiment, a square tubular blower box 52 is connected to the lower end of the housing 11 of the exhaust treatment device 1 as a second housing, and an auxiliary fan 51 is provided inside the blower box 52. It is contained. An exhaust outlet 53 is opened on the lower surface of the blower box 52.

For example, a sirocco fan is used as the auxiliary fan 51, and as shown in FIG. 12, the exhaust gas sucked from the center of the sirocco fan is discharged through the exhaust outlet 53. A guide plate 54 inclined so as to smooth the flow of exhaust gas is provided on the upper surface of the case of the auxiliary fan 51.

The blower box 52 is supported by a gantry 55. The exhaust treatment device 1 and the blower box 53 are sealed with an appropriate sealing material.

By adding the auxiliary fan 51 to the outlet side of the exhaust treatment device 1 in this way, it is possible to suppress a decrease in the flow rate due to the pressure loss of the exhaust treatment device 1. Therefore, it is advantageous when the pressure loss of the filter 12 is large or when the number of stages of the filter 12 is set to be large.

In the example shown in FIG. 12, the rectifying guide 41 is provided inside the weather cover 2 as in the second embodiment described above.

Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above embodiment, in order to attach the housing 11 to the weather cover 2, a slide structure by engaging the mounting rail 18 and the flange portion 19 and a clamp member 21 for final fixing / fastening are used in combination. However, it is possible to mount only one of them. For example, the housing 11 may be fixed to the weather cover 2 by a plurality of clamp members 21 without using the engagement of the mounting rail 18 and the flange portion 19. Alternatively, the housing 11 may be supported by a slide structure formed by engaging the mounting rail 18 and the flange portion 19, and finally fixed with screws or the like so that the housing 11 cannot be pulled out.

1 ... Kitchen exhaust treatment device 1
2 ... Weather cover 11 ... Housing 12 ... Filter 15 ... Filter rail 18 ... Mounting rail 19 ... Flange part 21 ... Clamp member 22 ... Seal member 41 ... Rectifier guide 51 ... Auxiliary fan 52 ... Blower box

Claims (6)

A square tubular housing in which the upper end surface opens as an exhaust inlet, the lower end surface opens as an exhaust outlet, and one side surface is a door that can be opened and closed.
A filter that is arranged in multiple stages inside this housing and can be replaced through the door,
Be prepared for
An exhaust treatment device for kitchens used by connecting the upper end of the housing to the lower surface opening of the weather cover that covers the exhaust port opened in the outer wall of the building. Mounting rails having a substantially U-shaped cross section are provided on three sides of the peripheral edge of the lower surface opening of the weather cover, and
Flange portions that slidably engage with the mounting rail are provided on three sides of the peripheral edge of the upper end of the housing.
The kitchen exhaust treatment device according to claim 1, wherein the housing is attached to the weather cover by sliding the housing along the mounting rail. Sealing members are provided over four sides between the lower surface opening of the weather cover and the upper end of the housing.
The kitchen exhaust treatment device according to claim 1 or 2, wherein at least a pair of clamp members are arranged on an outer wall surface so as to fasten the housing toward the weather cover with the seal member sandwiched between them. The kitchen exhaust treatment device according to any one of claims 1 to 3, wherein at least one stage of the filters arranged in multiple stages is a deodorizing filter. The kitchen exhaust treatment apparatus according to any one of claims 1 to 4, wherein each stage of the filter is configured by arranging a plurality of plate-shaped filters in a shape in which a plurality of V-shapes are continuous. A second square tubular housing is connected to the lower end of the housing.
The kitchen exhaust treatment device according to any one of claims 1 to 5, wherein an auxiliary fan is housed in the second housing.

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