JP3851234B2 - Exhaust equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an exhaust facility provided with an exhaust purification device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, kitchen facilities for lunch facilities or exhaust systems for household kitchens that generate exhaust air containing contaminants such as oils and fats, such as hotels, restaurants, and restaurants, have been provided with an exhaust duct. The fan which forms the exhaust wind which distribute | circulates from the exhaust inlet of this to an exhaust outlet is attached. Further, an exhaust purification device for removing pollutants contained in the exhaust air is attached to the exhaust duct on the exhaust inlet side of the exhaust duct.
[0003]
The exhaust gas purifying apparatus employs the configuration described in Japanese Patent No. 3268229.
[0004]
The exhaust purification device described in this Japanese Patent No. 3268229 includes a main body having an inlet through which exhaust air flows and an outlet through which exhaust air flows out to the exhaust inlet of the exhaust duct. A cylindrical grease filter that is formed by laminating metal fibers and captures and removes contaminants contained in the exhaust air flowing into the main body from the inlet is rotatably disposed. Further, a cleaning tank storing a cleaning liquid for immersing a part of the grease filter and removing dust captured by the grease filter is formed below the main body. Further, below the grease filter, an injection nozzle that injects water toward the grease filter is attached to face the grease filter.
[0005]
Then, when the use of the kitchen equipment is finished, this grease filter is rotated to change the position where the grease filter is immersed in the cleaning liquid while spraying water toward the rotating grease filter with an injection nozzle. Contaminants such as fats and oils captured by the grease filter are washed over the entire grease filter.
[0006]
[Problems to be solved by the invention]
However, in the exhaust system described above, if the grease filter is rotated while the exhaust duct fan is rotated when the grease filter of the exhaust purification device is cleaned, the pressure loss of the exhaust duct increases and the injection nozzle Because the water sprayed toward the lever filter may be scattered in the exhaust duct, the fan in the exhaust duct must be stopped to clean the grease filter.
[0007]
For this reason, it is not easy to take time to clean the grease filter because it is not easy to take time to stop the fan in the exhaust duct when using it continuously at a restaurant open for 24 hours, for example. There is a possibility that the grease filter may be clogged. For example, in restaurants where exhaust air containing a large amount of relatively large pollutants such as smoke from charcoal fires is continuously generated, the grease filter is washed after the end of business hours. May cause clogging and exhausting. As a result, there is a problem that usability is not good.
[0008]
The present invention has been made in view of these points, and an object of the present invention is to provide an exhaust facility that is easy to use.
[0009]
[Means for Solving the Problems]
The exhaust system according to claim 1 is provided in the exhaust air passage, and is provided with an exhaust means for forming exhaust air flowing in the exhaust air passage, and provided upstream of the exhaust means , and formed by the exhaust means . comprising an exhaust gas purification device for purifying exhaust air that has, the exhaust gas purifying apparatus, the provided on the side of the inlet of the exhaust air flows, with an outlet which exhaust air flows out into the exhaust air duct to the upper A main body and a nickel porous body disposed in the main body, allowing exhaust air flowing into the main body to flow from the inflow port to capture and remove contaminants in the exhaust air, A substantially cylindrical rotatable filter having air permeability for allowing the exhaust air from which the pollutants have been removed to flow out from the outlet, driving means for rotating the filter, and a lower part of the main body are provided. Immerse at least part of this A cleaning tank in which a cleaning liquid for cleaning contaminants captured by the filter is stored; and an injection unit that is provided opposite to the filter and injects water toward the filter. During the formation, the filter is cleaned by spraying water toward the rotating filter by the spraying means while the filter is always rotated by the driving means.
[0010]
Then, an exhaust means for forming an exhaust air flow provided in the exhaust air passage, mounting the exhaust gas purifier on the upstream side of this exhaust means, flows into the main body of the exhaust purification device, from the side of the inlet into the main body A substantially cylindrical filter having air permeability that allows the exhaust air to flow through, captures and removes pollutants in the exhaust air, and allows the exhaust air from which the pollutants have been removed to flow out from the outlet at the top of the main body. It was arranged rotatably formed with nickel porous body, provided with a cleaning tank cleaning solution was stored for cleaning the captured contaminants in by immersing at least a portion of the filter the filter, the filter water An injection means for injecting toward the filter is provided opposite to the filter, and when the exhaust air is formed by the exhaust means, the filter is always rotated by the drive means while the filter is always rotated by the drive means. Water Injection to washing the filter. As a result, the filter can be cleaned in a state where exhaust air is formed by the exhaust means without stopping the exhaust means , and the nickel porous body has the corrosion resistance even if the cleaning liquid and water are sprayed onto the filter. Since the corrosion of the steel can be suppressed, it is easy to use .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration of an embodiment of the exhaust system of the present invention will be described with reference to FIGS. 1 and 2.
[0012]
In FIG. 1, 1 is a kitchen facility. This kitchen facility 1 includes a gas stove 3 as a fire source on which a cooking appliance 2 such as a pan can be placed, or a fryer 4 as a fire source for cooking fried foods. ing. Further, above the gas stove 3 and the fryer 4, an exhaust facility 6 is attached for sucking an exhaust air 5 containing contaminants such as fats and oils generated during cooking and discharging it to the outdoors. The exhaust equipment 6 includes an exhaust duct 7 as an exhaust air passage, a fan 8 as exhaust means attached in the exhaust duct 7, and an exhaust purification device 9 attached to the exhaust duct 7.
[0013]
Here, the exhaust duct 7 has an exhaust inlet 11 formed at one end and an exhaust outlet 12 led out to the outside at the other end. A fan 8 is attached to the exhaust duct 7 on the exhaust outlet 12 side. The fan 8 circulates air from the exhaust inlet 11 to the exhaust outlet 12 of the exhaust duct 7, thereby exhaust duct. The exhaust air 5 is formed in the exhaust air inlet 7 and the exhaust air inlet 11 is located upstream of the exhaust air 5.
[0014]
A range hood 14 as a canopy is attached to the ceiling 13 where the exhaust inlet 11 of the exhaust duct 7 is formed. The range hood 14 is formed of a heat-resistant and corrosion-resistant incombustible material such as a stainless steel plate, for example, and is expanded downward.
[0015]
Further, the exhaust purification device 9 is attached to the exhaust inlet 11 in the range hood 14. The exhaust purification device 9 includes a main body 15 formed in a substantially rectangular box shape having upper and lower portions opened with a heat-resistant and corrosion-resistant non-combustible material such as a stainless steel plate. In addition, a cylindrical grease filter 16 as a breathable filter is disposed in the main body 15, and the lower opening of the main body 15 has a substantially box shape with an opening larger than the lower opening. The cleaning tank 17 is formed integrally with the main body 15 so as to cover the lower opening. The main body 15 is formed with an inlet 18 through which the exhaust air 5 flows into the main body 15 between the lower end of the main body 15 and the upper end of the cleaning tank 17, and the upper opening of the main body 15 is an exhaust duct. 7 is an outlet 19 that communicates with the exhaust outlet 11. From the outlet 19, the exhaust air 5 flows out to the exhaust duct 7 through the exhaust inlet 11.
[0016]
Here, the grease filter 16 includes a large-diameter frame body 21 formed in a substantially cylindrical shape, and the filter body 22 is disposed on the inner peripheral surface of the frame body 21 over the entire inner peripheral surface of the frame body 21. It is attached and held over. The frame body 21 is formed of, for example, a metal member having a plurality of vent holes. In addition, a rotation shaft 23 is formed integrally with the frame body 21 along the axial direction of the frame body 21 at the center of the frame body 21, and the frame body 21 includes the rotation shaft 23 as a main body. The main body 15 is rotatably arranged and attached in a state substantially along the longitudinal direction of the main body 15. As a result, the grease filter 16 closes the inlet 18 of the main body 15. Further, the rotating shaft 23 protrudes to one end side in the longitudinal direction of the main body 15, and a reduction motor 24 as a driving means is attached to the tip of the rotating shaft 23. The reduction motor 24 is connected to a power source (not shown), and the grease filter 16 is connected to the grease filter 16 through the frame 21 in a state where the fan 8 rotates and the exhaust air 5 is formed in the exhaust duct 7. Rotate along the circumferential direction. A cover body 25 formed in a box shape that accommodates the reduction motor 24 is attached to one end side of the main body 15 in the longitudinal direction.
[0017]
On the other hand, the filter body 22 is formed endlessly from a nickel porous body as a metal porous body having nonflammability, corrosion resistance, and air permeability, and is attached to the inner peripheral surface of the frame body 21. The grease filter 16 allows the exhaust air 5 that has flowed into the main body 15 through the inlet 18 to flow through the filter body 22 so that fine dust, oils and fats, or tar-like substances in the exhaust air 5 can flow. Such contaminants are captured and removed, and the exhaust air 5 from which these contaminants have been removed flows out from the outlet 19.
[0018]
Further, a water supply spray nozzle 26 is disposed on the upper side of the grease filter 16 in the main body 15 so as to face the upper side surface of the grease filter 16. An injection nozzle 27 as an injection means is disposed on the lower side of the grease filter 16 so as to face the side surface of the grease filter 16.
[0019]
Further, the water supply injection nozzle 26 and the injection nozzle 27 are respectively connected to a water supply unit (not shown) via an electric valve such as an electromagnetic valve (not shown).
[0020]
Further, a plurality of water supply injection ports 31 are formed in the side surface of the water supply injection nozzle 26 facing the grease filter 16 along the longitudinal direction of the water supply injection nozzle 26, respectively. A plurality of injection ports 32 are formed on the side surface of the injection nozzle 27 facing the grease filter 16 so as to be separated from each other along the longitudinal direction of the injection nozzle 27. Further, the water that has passed through the water supply unit is jetted toward the grease filter 16 through the water supply jet port 31 and the jet port 32.
[0021]
Further, the cleaning tank 17 stores the cleaning stock solution and the water to the extent that the lower eighth of the grease filter 16 is immersed, for example, to form the cleaning liquid 33. This washing stock solution is mainly composed of amine soap made from tall oil prepared with oleic acid extracted from plants such as pinewood or linoleic acid, etc. It has a composition in which a surfactant, sodium hydroxide, potassium hydroxide and the like are mixed. The cleaning liquid 33 has high detergency against contaminants, particularly oils and fats in the exhaust air 5, by diluting the cleaning stock solution with water.
[0022]
A discharge pipe 34 for discharging the cleaning liquid 33 in the cleaning tank 17 to the outside of the cleaning tank 17 is connected to the bottom of the cleaning tank 17 via a discharge valve 35.
[0023]
Furthermore, at one end of the cleaning tank 17 opposite to the cover body 25 in the longitudinal direction, when the cleaning liquid 33 stored in the cleaning tank 17 exceeds a predetermined water level in the cleaning tank 17, it overflows, that is, overflows. An overflow pipe 36 flowing out from the cleaning tank 17 is connected. The overflow pipe 36 is located above the injection nozzle 27, and the downstream side of the overflow pipe 36 is connected to the downstream side of the discharge valve 35 of the discharge pipe 34.
[0024]
An ultrasonic cleaning device (not shown) is disposed at the bottom of the cleaning tank 17 as ultrasonic cleaning means for ultrasonically vibrating the cleaning liquid 33 in the cleaning tank 17.
[0025]
Further, a control box which is a control panel as a control means is attached to the outside of the main body 15. This control box supplies a cleaning stock solution or water to the cleaning tank 17 by controlling a pump or an electric valve (not shown).
[0026]
Next, the operation of the above embodiment will be described.
[0027]
First, the exhaust purification device 9 is installed in the range hood 14. At this time, the outlet 19 of the exhaust purification device 9 communicates with the exhaust inlet 11 of the exhaust duct 7 in an airtight manner.
[0028]
Next, an electric valve or the like is opened by the control box, and water and the cleaning stock solution are stored in the cleaning tank 17 until a predetermined water level is reached.
[0029]
Then, in a state where the fan 8 of the exhaust duct 7 is rotated and the exhaust air 5 is formed in the exhaust duct 7, the grease filter 16 is rotated by the reduction motor 24 and water is supplied from the injection port 32 of the injection nozzle 27. It sprays on the 16 side surfaces, and the ultrasonic cleaning device is driven to prepare for cooking in a state where the cleaning liquid 33 in the cleaning tank 17 is ultrasonically vibrated.
[0030]
After that, steam or smoke containing oil or fat is generated by cooking, and the steam or smoke is exhausted into the range hood 14 as the exhaust air 5 and flows into the main body 15 of the exhaust purification device 9. The grease enters the side of the grease filter 16 from the inlet 18.
[0031]
At this time, when the exhaust air 5 flows through the filter body 22 of the rotating grease filter 16, turbulent flow such as contraction or conversion of the flow direction is repeated, and the rotation of the grease filter 16 is repeated. By the centrifugal separation by the centrifugal force, contaminants such as fine dust, oil and fat, or tar-like substances in the exhaust air 5 are captured by the filter body 22 and removed from the exhaust air 5.
[0032]
At the same time, water sprayed from the spray nozzle 27 adheres to the outer peripheral surface of the filter body 22, so that water-soluble contaminants in the exhaust air 5 dissolve into this water when flowing through the filter body 22. Thus, it is separated from the exhaust air 5.
[0033]
Further, the cleaning liquid 33 is increased by the water sprayed from the spray nozzle 27 toward the grease filter 16, and is discharged from the overflow pipe 36 to the discharge pipe 34 together with dust floating on the liquid surface of the cleaning liquid 33 or an oily emulsion. The cleaning liquid 33 in the cleaning tank 17 is maintained in a clean state.
[0034]
Further, when the cleaning liquid 33 is contaminated by use for a predetermined time, the discharge valve 35 is opened and the contaminated cleaning liquid 33 is discharged from the cleaning tank 17 through the discharge pipe 34. Is opened and new cleaning stock solution and water are supplied into the cleaning tank 17, and the cleaning solution 33 is stored until a predetermined water level is reached.
[0035]
Similarly, when the cleaning liquid 33 decreases due to volatilization or the like, the electric valve is opened in the control box, and the cleaning stock solution and water are replenished in the cleaning tank 17 until a predetermined water level is reached.
[0036]
In addition, it is preferable that the cleaning liquid 33 overflowed from the overflow pipe 36 and the contaminated cleaning liquid 33 are separately collected in a waste liquid container or the like and separately purified to reduce a sewage treatment load.
[0037]
Further, when the exhaust air 5 is discharged to the upper side of the grease filter 16, the grease filter 16 is allowed to flow again, so that contaminants in the exhaust air 5 are repeatedly removed by the filter body 22 of the grease filter 16. .
[0038]
The exhaust air 5 from which the pollutants have been removed becomes purified air 41, and the purified air 41 flows out from the outlet 19 of the main body 15 to above the main body 15 and is exhausted to the outside through the exhaust duct 7.
[0039]
In addition, in the gas stove 3 or the fryer 4 of the kitchen facility 1, when the oil or fat in the cooking utensil 2 is ignited during cooking, a flame or hot air is generated, and this flame reaches the range hood 14. The flame or the like tends to enter the side of the grease filter 16 from the inlet 18 of the main body 15 together with the exhaust air 5 by the intake air of the exhaust duct 7.
[0040]
At this time, since both the frame body 21 and the filter body 22 are nonflammable, the grease filter 16 is not damaged by this flame or the like, and the cleaning liquid 33 due to the rotation of the grease filter 16 and the spray nozzle 27 to the grease filter 16 Since a liquid film is formed on the outer peripheral surface of the grease filter 16 by the water jetted toward the water, the flame or the like is prevented from entering the exhaust duct 7.
[0041]
As described above, according to the above embodiment, the fan 8 is attached to the exhaust duct 7, the exhaust purification device 9 is attached to the exhaust inlet 11, and the grease filter 16 is installed in the main body 15 of the exhaust purification device 9. A cleaning tank 17 storing a cleaning solution 33 for cleaning the contaminants of the exhaust air 5 captured by the grease filter 16 by immersing the lower side of the grease filter 16 is provided below the main body 15. An injection nozzle 27 that is provided integrally with the main body 15 and injects water toward the grease filter 16 is attached to face the grease filter 16, and exhaust air 5 is formed in the exhaust duct 7 by the fan 8. When the grease filter 16 is rotated by the speed reduction motor 24, water is sprayed from the spray nozzle 27 toward the rotating grease filter 16 to clean the grease filter 16. As a result, the grease filter 16 can be cleaned in a state where the exhaust air 5 is formed in the exhaust duct 7 by the fan 8 without stopping the fan 8. For example, this fan can be used in a restaurant open for 24 hours. Since the grease filter 16 can always be washed in the exhausted state without stopping 8, the usability can be improved.
[0042]
Further, since the filter body 22 is formed of a nickel porous body having nonflammability, corrosion resistance, and air permeability, the filter body 22 can be used even in an atmosphere such as a kitchen facility 1 where a heat load is applied. Corrosion or rust does not occur even if contaminants or the like in the exhaust air 5 adhere, so that the exhaust air 5 can be purified stably over a long period of time, and the filter body 22 can be made less bulky.
[0043]
Furthermore, since the grease filter 16 is formed of a nickel porous body, pressure loss in the exhaust duct 7 can be reduced, and water sprayed on the grease filter 16 can be prevented from scattering into the exhaust duct 7.
[0044]
Then, the grease filter 16 is rotated by the reduction motor 24 to change the cleaning position of the grease filter 16 so that the grease filter 16 can be efficiently and substantially automatically cleaned, and the cleaning liquid 33 can be used efficiently.
[0045]
In addition, by spraying water from the injection port 32 of the injection nozzle 27 toward the grease filter 16 and cleaning it, the grease filter 16 can be more reliably cleaned, and during this cleaning, contaminants and the like are mixed with the cleaning liquid 33. Since the overflow pipe 36 overflows and is discharged from the cleaning tank 17, the cleaning liquid 33 in the cleaning tank 17 can be kept clean.
[0046]
Further, since the exhaust air 5 flows through the grease filter 16 at least a plurality of times such as on the side and upper part, contaminants in the exhaust air 5 can be more reliably removed. Since it is not necessary to remove and clean each part 9 and clean the inside of the exhaust duct 7, maintenance management can be made easier.
[0047]
In the above-described embodiment, the exhaust gas purification device 9 may be any exhaust gas such as exhaust air generated during waste disposal such as incineration of waste, or exhaust air generated from a firing furnace such as cement clinker or wood heating processing. The wind can also be targeted.
[0048]
In addition, the cleaning liquid 33 has a high detergency for fats and oils, has antibacterial properties, is neutral, does not contain preservatives, and is phosphorus-free, non-colored, non-flammable, and other than the above composition. It may be.
[0049]
Furthermore, the filter body 22 may have a configuration other than the nickel porous body as long as it is a metal member having nonflammability, corrosion resistance, and air permeability.
[0050]
In order to prevent the cleaning liquid 33 and water from scattering into the exhaust duct 7 in the case of an abnormality when a relatively large load is applied to the exhaust duct 7, as shown by a two-dot chain line in FIG. A scattering prevention filter 37 as a scattering prevention means having a zigzag cross section or a shape inclined upward along the longitudinal direction may be attached to the exhaust inlet 11.
[0051]
Further, in order to improve the fire extinguishing performance (smoke evacuating performance) of the exhaust gas purification device 9, an injection means such as a nozzle (not shown) is separately provided in the exhaust duct 7, and water or cleaning liquid 33 (smoke extinguishing liquid) is provided from this injection means. May be used to assist fire extinguishing (smoke extinction).
[0052]
【The invention's effect】
According to the exhaust equipment according to claim 1, an exhaust means for forming an exhaust air flow provided in the exhaust air passage, mounting the exhaust gas purifier on the upstream side of this exhaust means, within the body of the exhaust gas purifying apparatus, the side The exhaust air that has flowed into the main body from the inlet of the unit is passed through to capture and remove the pollutants in the exhaust air, and the exhaust air from which the pollutants have been removed flows out from the upper outlet of the main body . A substantially cylindrical filter having air permeability is formed of a nickel porous body and is rotatably disposed, and a cleaning liquid storing a cleaning liquid for immersing at least a part of the filter and cleaning contaminants captured by the filter is stored. In addition to providing a tank, an injection means for injecting water toward the filter is provided opposite the filter, and when the exhaust air is formed by the exhaust means, the injection means is always rotated by the drive means At that rotation Water jet towards have filters for cleaning the filter. As a result, the filter can be cleaned in a state where exhaust air is formed by the exhaust means without stopping the exhaust means , and the nickel porous body has corrosion resistance even when the cleaning liquid and water are sprayed onto the filter. Since the corrosion of the filter can be suppressed, the usability can be improved .
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an embodiment of an exhaust facility according to the present invention.
FIG. 2 is a side sectional view showing the same exhaust equipment.
[Explanation of symbols]
6 Exhaust equipment 7 Exhaust duct as exhaust air passage 8 Fan as exhaust means 9 Exhaust purification device
15 body
16 Grease filter as filter
17 Washing tank
18 Inlet
19 Outlet
24 Reduction motor as drive means
27 Injection nozzle as injection means
33 Cleaning solution

Claims (1)

An exhaust means provided in the exhaust air passage and forming exhaust air flowing through the exhaust air passage;
An exhaust purification device that is provided upstream of the exhaust means and purifies exhaust air generated by the exhaust means ;
The exhaust purification system is provided with a flow inlet of exhaust air flows to the side, a body having a flow outlet exhaust air flows out into the exhaust air duct to the upper,
It is formed of a nickel porous body and is disposed in the main body. The exhaust air flowing into the main body from the inlet is passed through to capture and remove contaminants in the exhaust air. A substantially cylindrical rotatable filter having air permeability for allowing the removed exhaust air to flow out of the outlet;
Driving means for rotating the filter;
A cleaning tank provided in a lower portion of the main body, in which a cleaning liquid for immersing at least a part of the filter and cleaning contaminants captured by the filter is stored;
An injection means provided opposite to the filter and for injecting water toward the filter,
When exhaust air is formed by the exhaust means, the filter is cleaned by injecting water toward the rotating filter by the injection means while the filter is always rotated by the drive means. exhaust equipment, which was characterized in that.

Images