JP5451804B2 - Exhaust system - Google Patents

Description

  The present invention relates to an exhaust device that exhausts polluted exhaust gas such as oily smoke generated in a kitchen to the outside, and in particular, induces air polluted exhaust generated in a commercial kitchen to an exhaust port by induction air and uses a grease filter to reduce oil content. The present invention relates to an exhaust device that performs collection, and is an exhaust device that improves the oil collection performance of a grease filter.

Conventionally, the kitchen exhaust apparatus shown in FIG. 5 is known (for example, refer patent document 1).
In the kitchen exhaust device 41, an exhaust duct 44 extending outside the building 43 is installed in the kitchen 42. The exhaust duct 44 communicates from an exhaust hood 45 provided in the kitchen 42 to an exhaust fan 46 on the outdoor side, and exhaust is discharged from the exhaust hood 45 into the outside air via the exhaust duct 44. A grease filter 47 that collects oil mist contained in the exhaust gas is disposed in 45, and an oil pan 48 that receives waste oil is disposed below the grease filter 47.

Moreover, the local ventilation apparatus installed in the cooking space shown in FIG.6 and FIG.7 is known conventionally (for example, refer patent document 2). 6 is a front view, and FIG. 7 is a cross-sectional view taken along line Y of FIG. 6. In this local ventilation device, guide plates 53 are provided on the blowing nozzles 52 of the three induction airflow generation devices 51, respectively.
The guide plates 53 are provided so as to extend from the blowout openings 54 of the blowout nozzles 52 toward the suction openings 56 of the suction exhaust flow generation unit 55, respectively. It guide | induces to the inside of the suction opening 56. FIG.

And the indoor air from the blowing fan 60 provided in the lower center part of the cooking stand 59 of the combustion heating type cooking appliance 58 provided with the gas stove is led to the blowing nozzle 52 by the induction airflow duct 61.
6 and 7, 62 is an exhaust fan provided in the suction exhaust flow generating section 55, 63 is an exhaust duct, 64 is an exhaust box, 65 is an exhaust flow, 66 is an exhaust hood, and 67 is an air supply fan. Then, the air is supplied into the room from the air supply opening 70 through the air supply duct 68 and the air supply box 69. 71 is an air supply, and 72 is a ceiling.
JP 2002-195618 A WO2004 / 072558 Publication

  The kitchen exhaust device 41 shown in FIG. 5 is provided with a grease filter 47 to collect oil, but the grease filter 47 is inclined so that the lower surface faces the upstream side and the upper surface faces the downstream side. Since it was erected, there was a problem that the oil collecting performance was not good.

The local ventilation device shown in FIGS. 6 and 7 is provided with a suction exhaust flow generation unit 55 having an exhaust hood 66 in a ceiling 72, and an induction air flow generation device 51 is incorporated in a cooking table 59 to introduce an induction air flow duct 61. The blowing airflow 57 is blown out from the blowing nozzle 52 via the air and the exhaust from the combustion heating type cooking appliance 58 is attracted and led to the exhaust hood 66. However, the induced airflow generator 51 is installed on the cooking table 59. Therefore, there is a problem that the cooking table 59 is not easy to use.
Moreover, this local ventilation apparatus also had the problem that oil collection was not considered.

  The present invention is intended to solve the problems of such a conventional configuration, and the grease filter is stood diagonally in the exhaust chamber so that the upper surface faces the upstream side and the lower surface faces the downstream side. By changing the direction of the exhaust gas, which is attracted by the induction air from the exhaust port and pushed upward, flows in the exhaust chamber from diagonally upward to diagonally downward, and by adopting a simple mounting structure, The purpose is to improve the oil collecting performance of the filter and to easily attach and detach the grease filter.

According to the first aspect of the present invention, a chamber body including an induction air chamber and an exhaust chamber is provided above an exhaust generation space, and the chamber body has an induction air outlet and an exhaust port opened on the lower surface, and the induction air outlet and the exhaust are exhausted. The induction air duct is connected to the generation space, and a blow-back part of the guide air is provided at the lower part of the guide air duct. The blow-back part of the guide air has the same horizontal width as that of the guide air duct and the bottom part is a semi-cylinder. The guide air duct is connected to the upper side of the bottom part, the guide air passage is formed on the upper side of the bottom part, and the guide air outlet opening upward is provided at the upper end of the guide air path. , induces the induction air from the induction air outlet on one side of the air duct provided with a guide plate for guiding the exhaust port, guide plate forms a lateral width equal to the width of the induction air duct, the upper surface of the grease filter in an exhaust chamber The grease filter can be detachably attached to the exhaust chamber with an upper support member that receives the lower surface of the upper end and a lower support member that engages the lower end of the grease filter so that the lower surface faces the upstream side and faces the downstream side. An oil receiver is formed below the grease filter, and an exhaust passage having an exhaust fan is connected downstream of the grease filter in the exhaust chamber of the chamber body, and an induction air supply fan is provided in the induction air chamber of the chamber body. The exhaust device is connected to an induction air supply path.

  According to a second aspect of the present invention, in addition to the configuration of the present invention according to the first aspect, the exhaust chamber is an exhaust device formed in a circular arc shape from one end of the exhaust port to the upper end of the grease filter.

The operation of the present invention will be described below.
The action of the present invention according to claim 1 is that the induction air flowing downward from the induction air chamber of the chamber body through the induction air outlet and the induction air duct is U-turned at the blow-back portion and upward from the induction air outlet. The air is blown out to induce exhaust, and it is raised along the induction plate by the Coanda effect. The exhaust is pushed into the exhaust chamber from the exhaust port on the lower surface of the chamber body, and the induced air and exhaust that have been pushed into the exhaust chamber from below By changing the direction so that it flows from diagonally upward to diagonally downward, centrifugal force is applied to separate oil droplets and air in the exhaust, and the weight of the grease filter is on the downstream side. The top end of the lower surface of the grease filter can be received, and the grease filter can be easily attached and detached while simplifying the mounting structure. And enabling Ukoto, it made it possible to improve the collection performance of oil in the grease filter.
In addition, the induction air descending the induction air duct can be directed upward in the induction air passage after the U-turn at the semi-cylindrical bottom, and can be guided along the induction plate from the induction air outlet.

  In addition to the action of the present invention according to claim 1, the action of the present invention according to claim 2 is the same as that of the present invention according to claim 1, except that the induced air and the exhaust pushed into the exhaust chamber are smoothly redirected by the exhaust chamber having a circular arc cross section. It has become possible to improve the separation performance between oil droplets in the exhaust and air.

According to the first aspect of the present invention, a chamber body including an induction air chamber and an exhaust chamber is provided above an exhaust generation space, and the chamber body has an induction air outlet and an exhaust port opened on the lower surface, and the induction air outlet and the exhaust are exhausted. The induction air duct is connected to the generation space, and a blow-back part of the guide air is provided at the lower part of the guide air duct. The blow-back part of the guide air has the same horizontal width as that of the guide air duct and the bottom part is a semi-cylinder. The guide air duct is connected to the upper side of the bottom part, the guide air passage is formed on the upper side of the bottom part, and the guide air outlet opening upward is provided at the upper end of the guide air path. , induces the induction air from the induction air outlet on one side of the air duct provided with a guide plate for guiding the exhaust port, guide plate forms a lateral width equal to the width of the induction air duct, the upper surface of the grease filter in an exhaust chamber The grease filter can be detachably attached to the exhaust chamber with an upper support member that receives the lower surface of the upper end and a lower support member that engages the lower end of the grease filter so that the lower surface faces the upstream side and faces the downstream side. An oil receiver is formed below the grease filter, and an exhaust passage having an exhaust fan is connected downstream of the grease filter in the exhaust chamber of the chamber body, and an induction air supply fan is provided in the induction air chamber of the chamber body. Since the induction air supply path is connected, the induction air that flows downward from the induction air chamber of the chamber main body through the induction air outlet and the induction air duct is passed through the semi-cylindrical bottom portion of the blow-back portion after the U-turn in the induction air passage. It can be directed upwards along the guide plate from the induction air outlet, and the induction from the induction air outlet By ensuring Coanda effect by induction plate it is possible to improve the attraction action of the exhaust gas by the air, is the induction air and exhaust from the exhaust port can reliably be pressed into the exhaust chamber.
Then, the induced air and exhaust pushed into the exhaust chamber from below are changed in direction so that they flow obliquely upward from below in the exhaust chamber, and centrifugal force is applied to separate oil droplets and air in the exhaust. Since the weight of the grease filter is on the downstream side, the upper support member can receive the upper end of the lower surface of the grease filter, simplifying the mounting structure, and making it easy to attach and detach the grease filter. The oil collecting performance of the grease filter can be improved.
In addition, since the induction air supply system is installed integrally with the chamber body, it does not impair the usability of the cooking table, and the induction air duct is used for the induction plate, making it easy to manufacture and install. It becomes.
In addition, during operation of the exhaust system, a force that presses the grease filter downstream acts, so that the fixing is more reliable and bypass of exhaust from the upper end of the grease filter can be prevented, and the weight of the grease filter is reduced when the exhaust system is stopped. Since it acts on the downstream side, there is no risk of falling.
Furthermore, the new arrangement configuration of the grease filter makes it difficult to see the dirty grease filter from the exhaust port on the lower surface of the chamber main body, and it is possible to provide a clean exhaust device.

According to the second aspect of the present invention, in addition to the effect of the present invention according to the first aspect, the exhaust chamber is formed in a circular arc shape from one end of the exhaust port to the upper end of the grease filter. and exhaust, by the upper separation performance of the oil droplets and the air in smoothly in to change direction by an arc-shaped cross section of the exhaust chamber to increase the action of centrifugal force the exhaust direction, capturing the oil in the grease filter The collection performance can be further improved.

The schematic front view which shows the example of installation of the exhaust apparatus which concerns on 1st embodiment of this invention. The schematic side view of FIG. AA sectional drawing of FIG. The schematic side view which shows a part of exhaust apparatus which shows 2nd embodiment of this invention. Schematic which shows the conventional kitchen exhaust apparatus. The front view which shows the conventional local ventilation apparatus. FIG. 9 is a sectional view taken along line Y in FIG. 8.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 to 3 are drawings showing a first embodiment of the present invention, FIG. 1 is a schematic front view showing an installation example of an exhaust device, FIG. 2 is a schematic side view of FIG. 1, and FIG. It is AA sectional drawing of 2.
FIG. 4 is a schematic side view showing a part of the exhaust device showing the second embodiment of the present invention.

Based on FIGS. 1-3, the exhaust apparatus which concerns on 1st embodiment of this invention is demonstrated.
The exhaust device 1 includes an induction air supply system and an exhaust discharge system. The exhaust generated by the use of a heating cooker 3 such as a gas stove in the kitchen 2 is attracted by the induction air supply system and is outdoors by the exhaust discharge system. To be discharged.

In the ceiling 4 of the kitchen 2 above the cooking device 3 that generates exhaust gas, an opening is provided and a chamber body 5 is installed.
The chamber body 5 includes an induction air chamber 6 and an exhaust chamber 7, and an induction air outlet 8 and an exhaust port 9 are opened on the lower surface.

An induction air duct 10 is connected to the induction air outlet 8, and the lower end of the induction air duct 10 is positioned in the vicinity of the heating cooker 3 such as a gas stove incorporated in the cooking table 11 serving as an exhaust generation space.
A blow-back member 14 including a guide air blow-back portion 12 and an induction air blow-out port 13 opened upward is detachably provided at the lower portion of the guide air duct 10.

A guide plate 15 that guides the guide air from the guide air outlet 13 to the exhaust port 9 is provided on the front side of the guide air duct 10 (right side in FIG. 2). The guide plate 15 has a width equal to the width of the guide air duct 10. They are formed identically .
The induction air blow-back portion 12 has the same width as that of the induction air duct 10 and has a bottom portion 16 formed in a semicircular shape. The induction air duct 10 communicates with one upper side of the bottom portion 16. An induction air passage 17 leading to the induction air outlet 13 is formed on the upper side, and the induction air from the induction air duct 10 makes a U-turn at the bottom portion 16 having a semicircular arc shape, and is directed upward by the induction air passage 17. Oriented, blown out from the induction air outlet 13, raised along the induction plate 15 by the Coanda effect, and attracted to the exhaust outlet 9 by attracting contaminated exhaust generated by the use of the heating cooker 3. .

The chamber body 5 located behind the ceiling 4 has a rectangular parallelepiped interior divided into an induction air chamber 6 and an exhaust chamber 7 by a partition plate 18 having an arcuate cross section. The induction air chamber 6 is provided with an induction air supply fan. The provided induction air supply path (not shown) is connected via the induction air supply path connection port 19.
The air in the induction air supply path sucks the air behind the ceiling 4 by the induction air supply fan.

In the exhaust chamber 7, as shown in FIG. 2, a grease filter 20 for collecting oil droplets in the contaminated exhaust has an upper surface 21 facing the upstream side of the exhaust flow and a lower surface 22 of the exhaust flow. It is erected obliquely so as to face the downstream side.
The exhaust chamber 7 is provided with an oil receiver 23 for receiving the oil separated and collected by the grease filter 20 at a position below the grease filter 20, and the oil receiver 24 is detachably provided in the oil receiver 23. Yes.

As shown in FIG. 2, the partition plate 18 forms an exhaust path in the exhaust chamber 7, and is formed in a circular arc shape from one end of the exhaust port 9 on the induction air chamber 6 side to the upper end of the grease filter 20. An exhaust chamber 7 is provided.
As shown in FIG. 2, the grease filter 20 is provided with an upper support member 25 that receives the upper end of the lower surface on the partition plate 18, and a lower support member 26 with a U-shaped cross section that engages the lower end is provided on the oil receiver 23. The filter 20 is detachably attached to the exhaust chamber 7 so that the grease filter 20 can be easily cleaned and replaced.

An exhaust path (not shown) provided with an exhaust fan is connected to the exhaust chamber 7 via an exhaust path connection port 27, and the exhaust path is opened to the outside so as to discharge the exhaust to the outside.
For this reason, since the inside of the kitchen 2 becomes a negative pressure, an air supply port is appropriately provided.

In FIG. 2, 28 is a fire damper provided immediately before the exhaust path connection port 27 in the exhaust chamber 7, and 29 is a screw for connecting the induction air duct 10 to the induction air outlet 8 in the induction air chamber 6. The screw hole of the induction air duct 10 is a long hole in the vertical direction for adjusting the unevenness of the ceiling 4, and the induction air duct is against the inclination of the lower surface of the chamber body 5 due to the unevenness of the ceiling 4 from the horizontal. 10 are connected vertically. 30 is the wall of the kitchen 2, and 31 is the floor.
Further, the blow-back member 14 provided at the lower part of the induction air duct 10 is not shown, but an appropriate mesh wire net is attached to the induction air outlet 13 to prevent the material being cooked from scattering and entering. In addition, a drain hole having a diameter of several millimeters is opened at the bottom 16 of the blow-back portion 12, and the blow-back member 14 and the induction air duct 10 are provided with a detachable metal fitting that can be attached and detached with a single action by a spring action. The blow-back member 14 can be easily cleaned.

  In this embodiment, the horizontal width of the grease filter 20 (left and right direction in FIG. 1) is 1000 mm with two 500 mm, and the horizontal width of the induction air duct 10 and the induction plate 15 is 450 mm, but the horizontal width of the grease filter 20 is 500 mm. When the width of the induction air duct 10 and the guide plate 15 is in the range of 200 to 400 mm, and the width of the grease filter 20 is 1000 mm, the width of the guide air duct 10 and the guide plate 15 is in the range of 400 to 700 mm. It is preferable to do this.

The operation of the exhaust device according to the first embodiment of the present invention configured as described above will be described below.
During cooking using the exhaust device 1, the exhaust fan and the induction air supply fan are driven, and the induction air flowing downward from the induction air chamber 6 of the chamber body 5 through the induction air outlet 8 and the induction air duct 10 is converted into a semi-cylinder. A U-turn is formed at the bottom 16 and the direction is directed upward in the induction air passage 17 to blow upward from the induction air outlet 13 to induce exhaust and to rise along the induction plate 15 by the Coanda effect. The induction air and the exhaust that are pushed into the exhaust chamber 7 from the exhaust port 9 on the lower surface of the chamber body 5 and are pushed into the exhaust chamber 7 from below are smoothly redirected in the exhaust chamber 7 having a circular arc section by the partition plate 18. Thus, the action of centrifugal force is increased to separate the oil droplets in the exhaust from the air, and the oil content is collected by the grease filter 20.
Also, when removing or replacing the grease filter 20, the lower support member 26 and the grease filter 20 are disengaged if the grease filter 20 is lifted obliquely upward, so that the grease filter 20 is pulled out. Therefore, when the grease filter 20 is attached, the grease filter 20 may be shifted obliquely downward while being in contact with the upper support member 25 and engaged with the lower support member 26.

Next, an exhaust device according to a second embodiment of the present invention will be described with reference to FIG.
FIG. 4 is a schematic side view showing the periphery of the exhaust path connection port 27 of the exhaust system according to the first embodiment.
This second embodiment is a modification of the first embodiment with respect to the arrangement structure of the exhaust passage connection port 27 and the shape of the exhaust chamber 7.

Specifically, a cross-sectional shape around the exhaust passage connection port 27 in the exhaust chamber 7 is formed by the arc-shaped portion 33 and the subsequent oblique portion 34, and the exhaust passage connection port 27 is directed obliquely upward in the oblique portion 34. It is attached to open.
By attaching the exhaust path connection port 27 so as to open obliquely upward, the induced air and exhaust gas pushed into the exhaust chamber 7 from the exhaust port 9 on the lower surface of the chamber body 5 are arcuate from below in the exhaust chamber 7. The oil is collected in the exhaust gas in the grease filter 20 and the exhaust chamber 7 by moving upward and downward, passing through the grease filter 20, and further turning downward and obliquely upward toward the exhaust passage connection port 27. To do well.

In the first and second embodiments described above, the inclination angle of the grease filter 20 is approximately 45 degrees with respect to the horizontal, but the inclination angle is preferably in the range of 45 degrees to 60 degrees with respect to the horizontal.
Moreover, in the above 1st and 2nd embodiment, although the partition plate 18 is formed in cross-sectional arc shape, another shape may be sufficient.

DESCRIPTION OF SYMBOLS 1 Exhaust device 3 Heating cooker 5 Chamber main body 6 Induction air chamber 7 Exhaust chamber 8 Induction air outlet 9 Exhaust port 10 Induction air duct 12 Blow-back part 13 Induction air outlet 15 Induction plate 16 Bottom part 17 Induction air passage 19 Induction air supply Road connection port 20 Grease filter 21 Upper surface 22 Lower surface 23 Oil receiver 25 Upper support member 26 Lower support member 27 Exhaust channel connection port

Claims (2)

A chamber main body having an induction air chamber and an exhaust chamber is provided above the exhaust generation space. The chamber main body has an induction air outlet and an exhaust opening on the lower surface, and an induction air duct between the induction air outlet and the exhaust generation space. The guide air blow-back portion is provided at the lower part of the induction air duct. The width of the guide air blow-back portion is the same as the width of the induction air duct and the bottom is formed in a semi-cylindrical shape. An induction air duct is communicated to the upper side of the side, an induction air passage is formed above the other side of the bottom, an induction air outlet opening upward is provided at the upper end of the induction air passage, and the induction air duct is guided to one side. the guide plate for guiding the induction air from the air outlet to the exhaust port is provided, guide plate forms a lateral width equal to the width of the induction air duct, the lower surface of the grease filter top facing upstream in the exhaust chamber downstream The grease filter is detachably attached to the exhaust chamber by an upper support member that receives the lower surface of the upper end and a lower support member that engages the lower end of the grease filter. The exhaust passage with the exhaust fan is connected downstream of the grease filter in the exhaust chamber of the chamber body, and the induction air supply passage with the induction air supply fan is connected to the induction air chamber of the chamber body. Exhaust device characterized.   The exhaust apparatus according to claim 1, wherein the exhaust chamber is formed in an arc shape in cross section from one end of the exhaust port to the upper end of the grease filter.

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