JP6170870B2 - Kitchen exhaust method and apparatus - Google Patents

Description

  The present invention relates to an exhaust method and apparatus for capturing particles (including mist state) contained in exhaust gas such as oil smoke, and more particularly to capture oil and fat and dust generated in a kitchen or the like. It is suitable for.

2. Description of the Related Art Conventionally, a method using water to capture oil and fat particles contained in exhaust gas such as oil smoke generated in a kitchen is known.
For example, a method of simply spraying water or mist water on the filter, a method of sucking up the stored water together with the exhaust to cause a bubbling phenomenon, and removing only the dispersed particles contained in the exhaust, and supplying water onto the punching panel A method is known in which water is bubbled in a negative pressure state to form a water film, and a fountain state is formed when exhaust passes, and the oil and fat and odor are supplemented by contact with water.

In addition, a grease filter having a cross-sectionally substantially ventilated cross-sectional view, and including an intake side ventilation path, an exhaust side ventilation path, and an intermediate corner ventilation path that changes the wind direction from the intake side to the exhaust side, is provided. Are known.
The grease filter that constitutes the bent path separates the fat and oil particles by centrifugal force generated when the flue gas passes through the path, and the oil and fat particles collide with the outer peripheral side wall in the direction in which the fat and oil particles are blown by the centrifugal force. The matter is aggregated and captured.

Japanese Patent Application Laid-Open No. 07-1000031 Japanese Patent Laid-Open No. 10-216447 JP 2004-130257 A JP-A-2005-144208 JP 2005-262068 A

In the case of a collision-removal filter that simply sprays water or mist water as in the conventional case described above, there is a problem that water passes through the filter, the water jumps up, and leaks in the duct or the like.
That is, water and oil are mixed and scattered at the time of a collision, slew the gap, and the water droplets collect and increase, causing water droplets to jump up and dirt on the duct and the like, resulting in poor exhaust efficiency.
Moreover, even if sprayed water is sprayed on the inside of the filter (the side where the flue gas has passed), contamination of the filter is unavoidable, and it is necessary to install a filter for preventing splashing of water droplets, resulting in high costs.

  In addition, the method of passing water overflow bubbling has problems such as providing a water tank in the apparatus, requiring an exhaust fan that generates a large load for causing a bubbling phenomenon, and increasing the amount of water used. In addition, water droplets containing oils and fats scattered by bubbling need to be supplemented with a mesh type secondary filter, resulting in problems of exhaust efficiency and filter clogging.

  In addition, the method of bubbling the water supplied on the punching panel requires a considerable ability of the exhaust fan to cause the bubbling phenomenon, and water droplets containing oil and fat scattered by bubbling is a mesh type secondary filter. As a supplement, clogging and maintenance of the punch panel itself and the secondary filter are inevitable.

  Accordingly, the present invention is to provide a kitchen exhaust method and apparatus that can improve processing efficiency with low static pressure, can be expected to reduce the size and labor of an exhaust fan, and is also considered for maintenance.

In the kitchen exhaust method of the present invention, the flow straightening guide and the filter are arranged in parallel with a space, the flow straightening guide is set to have an inflow path facing downward, and the filter has a substantially square shape in cross-sectional view on the inlet side. A plurality of ventilation paths bent from the exhaust port side to the exhaust port side are arranged side by side, and the oil smoke sucked from the rectifying guide is mixed with the mist water jetted downward in the space, while being sucked up The water droplets containing the agglomerated water droplets and oils and fats that have been stirred and dropped, or the water droplets containing the agglomerated water droplets and oils and fats attached to the flow straightening guide, the flow straightening guide is inclined toward the space side. Therefore, the water droplets flowing down into the space or adhering to the filter inclined to the space side and the water droplets in which the mist water containing particles such as oil and fat is aggregated by inertia separation Flow down , Water drops each falling is drained from the drain hole on the bottom, the exhaust smoke is characterized in that the sucking exhaust upwardly through said filter.

Further, kitchen exhaust system of the present invention includes a rectification guide inflow path in front is set downward, in parallel with the rectifying guides are installed a filter is provided a space between said filter section A mist-like shape in which a plurality of ventilation paths bent from the intake port side to the exhaust port side are arranged side by side in a generally square shape, and sprayed downward into the upper portion of the space water injector are apparatus, it is characterized in that the exhaust passage for sucking the exhaust upward to the rear of the filter is provided.

In the kitchen exhaust device, the flow straightening guide is inclined downwardly to the flow straightening frame and is arranged in parallel in the vertical direction, and an inflow path is formed between the flow straightening guides. It is installed on the front of the device in a state of being inclined downward to the rear, the rectifying guide inclined downward to the rear filter side is further inclined, and the oil smoke rising from the cooking table is lowered downward into the kitchen exhaust device You may pull in .

Since the sprayed mist water and oily smoke are mixed, the present invention is separated and dropped by a filter as water droplets containing oil and fat, and drained, so that it has an effect of sufficiently supplementing smoke and odor.
In addition, since the oil and fat adhering to the rectifying guide and the filter are washed away with mist water or water droplets, the filter is hardly required to be cleaned, and the exhaust fan can be reduced in size and noise can be reduced.

  The exhaust smoke is mixed with the sprayed mist water to reduce the exhaust temperature, prevent fire in the duct and fire spread in the event of a fire, and the low exhaust temperature has little impact on the outside air. Prevents dirt on the outer wall and exhibits an environmentally friendly effect.

It is a vertical side view which shows one Embodiment of the exhaust apparatus of this invention. It is a front view except a curtain which shows one embodiment of the exhaust device of the present invention. It is explanatory drawing which shows the flow of the exhaust smoke of the exhaust apparatus of this invention. It is a perspective view which shows the Example of the rectification | straightening guide of the exhaust apparatus of this invention. It is a perspective view which shows the Example of the side plate of the exhaust apparatus of this invention. It is a perspective view which shows the Example of the filter of the exhaust apparatus of this invention. It is explanatory drawing which shows the flow of the exhaust smoke of the filter of the exhaust apparatus of this invention. It is a perspective view which shows the Example of the mist-like water injector of the exhaust apparatus of this invention. It is a perspective view which shows the Example of the drain pan of the exhaust apparatus of this invention.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal side view showing an embodiment of the present invention, and FIG. 2 is a front view thereof.
The kitchen exhaust apparatus 1 of the present invention includes a rectifying guide 4 having an inflow passage 3 set downward on the front surface 2, a space 5 provided between the rectifying guide 4 and a filter 6. 5 is provided with a mist-like water injector 7 that injects downward into the space, and an exhaust path 8 that sucks and exhausts upward at the rear of the filter 6.

  In the space 5, the oil smoke 9 </ b> A and the mist-like water 10 jetted downward are mixed, sucked and stirred to form water droplets containing oil and fat, and the water droplets containing oil and fat are separated and dropped by the filter 6. The exhaust smoke 9B passes through the filter 6 and is sucked and exhausted upward (FIG. 3).

The rectifying guide 4 is inclined downward and backward in the rectifying frame 41, and is arranged in parallel in the vertical direction to form the inflow path 3 between the rectifying guides 4 (FIG. 4).
On the other hand, the side plate 11 of the kitchen exhaust device 1 is provided with a receiving bracket 12 inclined downward in the rear direction at the end portion of the front surface 2, and a rectifying frame 41 is provided over the receiving bracket 12 so as to extend the kitchen exhaust device. 1 is formed.

Therefore, the rectifying guide 4 inclined downward to the rear (filter 6 side) is further inclined, and the oil smoke 9A rising from the cooking table is drawn downward into the kitchen exhaust device 1.
In a state where the flow straightening frame 41 is passed over the metal fitting 12, an angle related to the flow straightening guide 4, the flow straightening frame 41 and the metal fitting 12 is set so that the flow straightening guide 4 is inclined downward (to the filter 6 side). To do.

On the side plate 11, a filter receiving bracket 13 is installed in parallel with a gap from the receiving bracket 12 (FIG. 5), and the filter 6 is attached to the filter receiving bracket 13.
Therefore, the filter 6 is installed in parallel with the space 5 formed in the kitchen exhaust device 1 behind the rectifying guide 4.

In the upper part of the space 5 formed between the rectifying guide 4 and the filter 6, a mist water injector 7 is installed (FIG. 8), and is directed downward from the injection nozzle 71 into the space 5. The mist water 10 is jetted along the inclination angle.
Therefore, the mist water 10 is sprayed from above to the oil smoke 9A drawn downward into the space 5 from the rectifying guide 4 and adhered to and mixed with the oil particles.
Further, by generating an air flow downward in the space 5, it contributes to the drawing of the oil smoke 9A.

The filter 6 includes a plurality of ventilation paths in which the inlet side and the outlet side are bent in a substantially letter shape, and the intermediate plate member 66 is sandwiched between the front and back cover members 64 and 65 to constitute a main body. The opening of the cover material 64 on the front side (space 5 side) is the intake port, the opening of the cover material 65 on the back side (exhaust passage 8 side) is the exhaust port, and the ventilation path 61 and the exhaust port on the intake port side. The side ventilation path 62 is arranged in a substantially square shape.
On the other hand, the intermediate plate member 66 is provided with window holes at regular intervals in the vertical direction to form a corner ventilation path 63, which communicates with both ventilation paths 61 and 62 in correspondence with each other.

  Therefore, the filter 6 has a configuration of a contracted flow removal method in the present embodiment, and has a ventilation path having a generally letter-like shape in cross section, and includes an intake side ventilation path 61 and an exhaust side ventilation path 62, and It is composed of an intermediate corner ventilation path 63 that changes the air direction from the intake side to the exhaust side. Oil and fat particles are separated by centrifugal force generated when passing through the path, and the oil and fat particles collide with the outer peripheral side wall in the flying direction. They are aggregated and captured (FIGS. 6 and 7).

  An exhaust path 8 is installed on the rear side of the filter 6 so as to promote suction and exhaust of the oil smoke 9A into the apparatus by an exhaust fan (not shown).

  Therefore, with each of the above-described configurations, the oil smoke 9A flows downward from the rectifying guide 4 into the space 5, and sprays the mist water 10 of the mist water injector 7 from above to the inflowing oil smoke 9A. And the mist-like water 10 adhere to each other, and are sucked up by the exhaust fan to the filter 6 located on the exhaust side where the negative pressure is obtained, and are stirred and guided in a cool manner.

Exhaust smoke 9B, in which oil and fat particles and mist-like water 10 adhere to each other and increase in mass, causing a contraction when passing through a contraction type filter 6 and simultaneously passing an air stream in a V-turn. The mist water 10 containing particles such as oil and fat collides with the inner wall surface of the filter 6 and is agglomerated to form water droplets.
On the other hand, the exhaust smoke 9B, which has been cleaned by removing oil and fat particles, passes through the filter 6 and is sucked and exhausted upward by the exhaust passage 8.

  In the space 5, the oil and fat particles of the inflowing oil smoke 9 </ b> A and the mist-like water 10 adhere, and when they are sucked up to the filter 6 on the exhaust side and stirred and guided, they aggregate and flow down as water droplets. Even if water droplets or mist-like water 10 adheres to the rectifying guide 4, it flows down into the space 5 because it is inclined toward the space 5, or even if mist-like water 10 adheres to the filter 6, it becomes water droplets. A drain pan provided at the lower end of the space 5 that also flows down, drains from the drain hole on the bottom surface, and also drops from the water, which is agglomerated water 10 containing particles such as oil and fat adhered to the inner wall surface of the filter 6 by inertia separation. 14 is received and stored and drained out of the apparatus.

  Therefore, the mist water 10 is not discharged from the inflow path 3 and the front surface 2 of the rectifying guide 4 to the outside of the apparatus, and the exhaust smoke is cooled in contact with the sprayed mist water 10, so that the temperature of the exhaust smoke decreases. In addition, it prevents fire in the duct and the spread of fire in the event of a fire, and since the exhaust temperature is low, it has little effect on the outside air, preventing discomfort to passers-by and dirt on the outer wall, making it environmentally friendly.

  In the present embodiment, the filter 6 has been described by the contraction removal method, but the contraction removal method and the collision removal method having other configurations may be used, and the water droplet adhesion surface portion of the rectifying guide 4 and the filter 6 may be hydrophilic. If the paint is coated, the flowing water action is promoted and a washing action by flowing water can be expected.

  The embodiments of the present invention have been specifically described with reference to the drawings. However, the present invention is not limited to the above-described embodiments, and other embodiments can be used without departing from the spirit of the invention. Is also applicable.

DESCRIPTION OF SYMBOLS 1 Kitchen exhaust apparatus 2 Front 3 Inflow path 4 Rectification guide 5 Space 6 Filter 7 Mist water injector 8 Exhaust path 9A Oil smoke 9B Exhaust smoke 10 Mist water 11 Side plate 12 Bracket 13 Filter bracket 14 Drain pans 61, 62, 63 Ventilation path 71 Injection nozzle

Claims (3)

The rectifying guide and the filter are arranged in parallel with a space, the rectifying guide has an inflow path set downward, and the filter has a substantially cross-sectional shape and is bent from the intake side to the exhaust side. A plurality of paths are arranged side by side, and the oil smoke sucked from the flow straightening guide is mixed with the mist-like water jetted downward in the space, and the water droplets and fats and oils agglomerated by being stirred while being sucked up The water droplets containing the condensed water droplets and oils and fats that fall in the form of water droplets containing or fall on the flow straightening guide flow down into the space because the flow straightening guide is inclined toward the space. Alternatively, the water droplets attached to the filter inclined to the space side and the water droplets obtained by aggregation of the water droplets containing particles such as oil and fat by inertia separation also flow down, and the water droplets flowing down are bottom surfaces. of Drained from drain hole, kitchen exhaust process exhaust smoke, characterized in that the suction exhaust upwardly through said filter. Comprises a rectifying guide inflow path in front is set downward, in parallel with the rectifying guides are installed a filter is provided a space between, on the filter substantially V-shape cross section, inlet side A plurality of ventilation paths bent from the exhaust port side to the exhaust port side are arranged side by side, and a mist water injector that injects downward into the space at the upper part of the space is provided , and the filter An exhaust system for a kitchen, characterized in that an exhaust passage for suctioning and exhausting upward is provided at the rear part. The rectifying guide is inclined downward to the rectifying frame and is arranged in parallel in the vertical direction, and an inflow path is formed between the rectifying guides, and the rectifying frame is provided on the front side of the kitchen exhaust device and to the rear. It is installed in a state of being inclined downward, and the rectifying guide inclined downward to the rear filter side is further inclined, and draws the oil smoke rising from the cooking table downward into the kitchen exhaust device The kitchen exhaust device according to claim 2.

Images