JP5871260B2 - Grease interceptor - Google Patents

Description

    The present invention relates to a grease interceptor used in a commercial kitchen or the like, and in particular, provides a odor that does not diffuse outside the grease interceptor.

  The grease interceptor is designed to perform daily basket cleaning, cleaning of floating oil once a week, and cleaning of residue once a month, but it is obstructed due to inappropriate maintenance such as neglecting cleaning. Garbage and oil in the vessel may rot, or components such as fats and oils, seasonings and spices shed from the kitchen may be mixed with the wastewater, which may cause bad odors.

    In kitchens where hot water is often used, the temperature inside the grease interceptor is relatively high, and odors leak into the kitchen compartment through gaps in the lid of the grease interceptor and side grooves and pipes that flow into the grease interceptor. Easy to spread. Even if the drainage in the grease interceptor is at a low temperature, it leaks into the kitchen chamber due to the diffusion effect due to the difference in odor concentration in the grease interceptor and in the kitchen chamber. In general, because the amount of ventilation by the hood ventilation fan on the cooking utensil is large in the kitchen room, odor components are also ventilated to some extent during the kitchen work hours, but when the ventilation is stopped, the lid of the grease interceptor lid Odor concentration in the kitchen chamber increases due to the odor leaked from the gap, and the odor may poke through the nose when entering the kitchen first in the morning.

    In order to solve such a problem, conventionally, an oil-decomposable microorganism 101 is introduced into the grease interceptor 100 and air is blown into the bottom of the interceptor for supplying oxygen to the microorganism (aeration 102), and the oil is decomposed to cause odor. Measures have been taken, such as reducing odors (sometimes blowing ozone instead of air) and masking odors with fragrances.

JP-A-10-230288

However, in the degradation of fats and oils using microorganisms, the residence time in the grease interceptor is sometimes short, and the fats and oils are hardly degraded. Moreover, aeration of the inside of the tank to supply oxygen to microorganisms may cause odors to diffuse from the grease interceptor into the kitchen chamber, and the agitated floating oil may flow out together with the drainage.
Therefore, an object of the present invention is to provide a grease interceptor that does not diffuse odor without impairing the oil / water separation function.

As means for solving the above problems, the grease interceptor of the present invention comprises a dust removal chamber into which drainage flows from a drainage inflow portion, an oil / water separation chamber, and a trap installed so as to communicate with a downstream drainage outlet. and interceptor body having said possess a lid for covering the grease interceptor body, and the space between the lid and the grease interceptor body, provided an exhaust path communicating between the inside of the trap, the middle of the exhaust passage An exhaust fan is provided to forcibly suck the air in the grease interceptor and exhaust it to the drain outlet. The exhaust path has a suction side and an exhaust side through the exhaust fan. The one end on the suction side is positioned in the space, and the one end on the exhaust side is positioned below the water surface in the trap .

  By forcibly exhausting the air in the grease interceptor through the exhaust fan and exhausting it to the drain, it is possible to make the inside of the grease interceptor negative pressure and prevent odors from being diffused indoors.

It is sectional drawing of the grease interceptor which concerns on 1st Example of this invention. It is sectional drawing of the exhaust path which concerns on 2nd Example of this invention. It is a figure which concerns on the conventional grease interceptor.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the parts indicated by the same reference numerals as those in the conventional example indicate the same or corresponding parts.

  FIG. 1 is a cross-sectional view of a grease interceptor 1 according to a first embodiment of the present invention. A side groove 2 is provided in the kitchen for floor drainage, and drainage flows from the side groove 2 into a box-shaped grease interceptor body 3 embedded under the floor. In FIG. 1, a side groove type grease interceptor 1 is shown, and the grease interceptor body 3 is embedded under the floor so that the upper edge 3 a is below the height of the bottom 2 a of the side groove 2. A lid 5 such as a grating is fitted to the upper part of the side groove 2 so as to be the same height as the floor surface 4.

  The interceptor body 3 embedded under the floor is driven by concrete 6a around the body, but drainage also flows from the side groove 2 into the upper space of the interceptor body 3 buried deep in the height of the side groove 2. An opening which is a drainage inflow portion 7 to be secured is secured, and concrete 6b is placed along the outer wall of the interceptor body 3 to perform waterproofing. At this time, an unillustrated raising may be used. And the receiving frame 8 is provided on the interceptor main body 3 so that it may become the same height as the lid | cover 5 for grating, and the lid | cover 9 is fitted.

The interceptor body 3 floats and separates oil and fat components by utilizing the difference between the specific gravity of water and oil, the dust removal chamber 13 provided with the basket 12 for removing the dust flowing in from the drainage inflow portion 7 by the partition plates 10 and 11. The oil-water separation chamber 14 is divided into a sealed water chamber 15 for securing sealed water to prevent invasion of odors, pests, etc. from the sewer pipe, and each chamber is communicated under the partition plates 10 and 11. Have. The sealed water chamber 15 is provided with a drain outlet 16 for guiding drainage to the sewer pipe, and a T-shaped trap 17 is connected to the drain outlet 16.

  In FIG. 1, a side groove type grease interceptor is shown. However, the present invention is not limited to this, and when drainage by a pipe is adopted (pipe type), drainage fitted to the drainage pipe is connected to the interceptor body 3. Provide an inlet.

The drainage inflow part 7 is provided with a deodorizing valve 18. The deodorizing valve 18 is attached to the cast concrete 6b or raised so as to cover the opening of the drainage inflow portion 7. The lower part 18a of the deodorizing valve 18 is a flap, and is adjusted by a hinge 18b so as to open by the pressure when drainage flows in and to cover the drainage inflow portion 7 when drainage does not flow. This prevents the odor from diffusing from the gap between the gratings 5 into a room such as a kitchen.

  Similarly, in the case of the pipe type, the deodorizing valve 17 may be attached so as to cover the radial cross section of the drainage inlet.

  Furthermore, in order to periodically clean the inside of the grease interceptor body 3, a handle 19 is attached so that the lid 9 can be easily removed. Since the grease interceptor is embedded under the floor of a kitchen or the like, this handle should be lowered so that people walking in the kitchen will not trip over. The drop handle 19 has a hole in the lid 9 and drops the handle 19 into the space below the lid. Therefore, the drop handle 19 is not shown so as to cover almost the entire inner surface of the lid 9 so that odors do not diffuse into the room from this hole. An anti-odor cover may be provided, or an anti-odor cover 20 may be provided individually so as to cover each of the drop handles 19.

    Further, the lid 9 of the grease interceptor 1 is often used with a plurality of lids arranged in parallel, so that the odor does not diffuse into the room from the joint between the lid and the lid or the gap between the receiving frame 8, A packing (not shown) may be attached to the receiving frame 8.

  As described above, various measures are taken to prevent the odor from diffusing outside from the grease interceptor 1, but it is inevitable that the odor component, which is a small particle, diffuses through an invisible gap. Sometimes. Therefore, an exhaust passage that forcibly sucks air containing odor in the space S extending between the grease interceptor lid 9 and the interceptor body 3 and guides it to the drain outlet 16 communicating with the sewer. 21 is provided.

The fan 22 is used as a means for forcibly sucking the air in the space S. However, as shown in FIG. 1, the fan 22 can be accommodated in the fan device 22 a and provided outside the grease interceptor 1. The fan device 22a may be embedded under the floor, installed on the floor, or attached to the wall according to the environment of the kitchen. When the grease interceptor body 3 is shallow, if the fan device 22a is installed in the interceptor body 3, drainage may be applied to the fan 22, but the risk is avoided by installing it outside the body 3. it can.

The exhaust passage 21 is provided with a suction side passage 23 and an exhaust side passage 24 via the fan device 22a, and the suction port 23a, which is one end of the suction side passage 23, is positioned in the space S to suck air in the space S. At the same time, the upper end opening 25a of the guide tube 25, which is fixedly passed through the inspection lid 17a from which the trap 17 can be removed, is positioned in the space S, and the upper end opening 25a is connected to the other end 24a of the exhaust side passage 24. The exhaust port 25 b at the lower end of the guide tube 25 is positioned downwardly below the water surface in the trap 17. Thus, the air in the space S is exhausted from the drainage outlet 16 to the sewer via the exhaust passage 21 including the suction side passage 23, the fan device 22 a, the exhaust side passage 24, and the guide pipe 25. At this time, the depth from the surface of the water to the lower end 25b of the guide tube 25 is such that a sealed water depth exceeding a standard defined by SHASE-S (Air Conditioning and Sanitary Engineering Association Standard) or the like is secured to prevent invasion of bad odors and insects. .

  In addition, when the drainage in the sealed water chamber 15 is agitated by the exhaust discharged into the water from the exhaust port 25b at the lower end of the guide tube 25, and the floating oil in the oil-water separation chamber 14 is mixed with the drainage again, The lower end of the guide tube 25 may be curved like a J shape so that the exhaust port 25b faces upward in a relatively shallow place below the water surface. Also at this time, the distance from the water surface to the lowermost portion of the J-shaped curved portion of the guide tube 25 ensures the sealing depth determined by the standard or the like.

  In addition, a valve or a ball (not shown) that is elastically biased and closed upstream is provided in the exhaust side passage 24 or inside the guide tube 25, and the exhaust from the upstream side is pushed downward and is pushed down. In the case where a check valve that allows exhaust and prevents reverse flow from downstream is provided, the exhaust port 25 b can be positioned on the water surface in the trap 17.

Even when a check valve is provided in the exhaust side passage 24 or the guide pipe 25, or when the container body 2 is shallow, the exhaust gas is exhausted into the drainage, so that even in the grease interceptor that is easily affected by the oil / water separation function It is possible to prevent the exhaust gas exhausted from the port 21b from agitating the waste water in the container body 2 and to prevent odor diffusion.

The suction side passage 23 and the exhaust side passage 24 constituting a part of the exhaust passage 21 can be made of a flexible material such as a vinyl hose, and the guide tube 25 can be made of a vinyl chloride pipe, but is not limited thereto. Sealing is applied to the gap between the guide tube 25 and the inspection lid 17a of the trap 17 penetrating the guide tube 25 so that odors do not leak again into the space S of the grease interceptor body 3.

  In FIG. 1, a T-type trap tube is shown in the trap 17, but the present invention is not limited to this, and it may be a P-type or one-type, and may be a partition that rises from the bottom surface of the interceptor body 3 instead of a tube. A guide tube 25 can be installed.

Similarly to the fan device 22a, the suction side passage 23 and the exhaust side passage 24 of the exhaust passage 21 can be installed under the floor, on the floor, or on the wall. In order to allow the intake port 23a of the suction side passage 23 and the other end port 24a of the exhaust side passage 24 to communicate with the space S, the lid 9 or the concrete 6b or any portion of the uplift (not shown) is penetrated by an arbitrary method. In this case, waterproof and deodorant sealing is applied to the through hole.

The fan 22 uses a household outlet (100V). In order to prevent the spread of odors, the amount of exhaust can be suppressed as much as possible by providing sealing such as packing in the gap of the lid 9 etc., and even a general-purpose fan can adequately cope with it. It is not necessary to prepare the necessary outlets and is easy to install.

  The grease interceptor 1 normally requires periodic cleaning / maintenance such as removing the lid 9 and collecting the garbage in the basket 12 and the oil / fat content in the oil / water separation chamber 14. When the exhaust side passage 24 is penetrated, the removal of the lid 9 is inconvenient. Therefore, the suction side passage 23 and the exhaust side passage 24 may be removed outside the lid 9 via a joint (not shown) outside the lid 9. In this way, it is not necessary to remove the lid 9 with the long passages 23 and 24 attached, which can contribute to an improvement in work efficiency.

  Although the interceptor main body 3 shown in FIG. 1 is partitioned into the dust removal chamber 13, the oil / water separation chamber 14, and the sealed water chamber 15 by the partition plates 10 and 11, it goes without saying that the present invention is not limited to this configuration. The oil / water separation chamber may also serve as the sealed water chamber, and there may be a plurality of oil / water separation chambers. Further, the grease interceptor 1 is not limited to a form embedded in the floor, but may be installed on a floor such as under a sink.

  Next, a second embodiment of the present invention will be described with reference to FIG. In the following description, explanations will be given on points different from the first embodiment, and descriptions overlapping with the first embodiment will be omitted.

In the second embodiment, all the exhaust passages 27 including the fan 26 are installed in the grease interceptor body 1. The exhaust passage 27 is provided with an intake port 28 for sucking air in the space S in the grease interceptor body 3 on the upper suction side of the fan device 26a that houses the fan 26, and on the lower exhaust side of the fan device 26a. A fitting portion 29 to be fitted into the inspection port 17 b of the trap 17 is provided, and a guide tube 30 extending downward from the fitting portion 29 in the trap 17 is provided.

As shown in FIG. 2, the fan device 26a has a cylindrical shape having the same diameter as that of the trap 17, and an intake port 28 provided on the upper suction side is formed in a cylindrical shape having a smaller diameter than the fan device 26a. Air in the space S of the grease interceptor body 3 is sucked. Above the intake port 28, an umbrella 31 is provided to prevent the drainage in the grease interceptor body 3 and water during cleaning from being applied to the fan 26.

The fitting portion 29 has a cylindrical shape so that the fitting portion 29 can be fitted to the inner diameter of the inspection port 17b of the trap 17 without any gap, and the inside is a hollow and constitutes a part of the exhaust passage. A guide tube 30 extends downward from the bottom surface of the fitting portion 29 to guide the exhaust to the drain outlet 16 that communicates with the sewer.

The shape of the fan device 26a of the second embodiment is not limited to a cylindrical shape, and may be a square shape. Further, the intake port 28 is not limited to the cylindrical opening, and the fan device 26a may be provided with an opening directly. The fitting portion 29 may also be of a type that fits to the outer diameter instead of the inner diameter of the inspection port 17b of the trap 17, and is not limited to these described shapes.

  The exhaust passage 27 including the fan device 26a according to the second embodiment is detachably attached to the trap 17, and can be removed to clean the inside of the trap 17 during cleaning.

DESCRIPTION OF SYMBOLS 1 Grease interceptor 2 Side groove 3 Grease interceptor main body 4 Floor 5 Side groove cover 6a, 6b Concrete 7 Drain inflow part 8 Receptacle frame 9 Lid 10, 11 Partition plate 12 Basket 13 Dust removal chamber 14 Oil-water separation chamber 15 Sealing chamber 16 Drain flow Outlet 17 Trap 18 Deodorant valve 19 Handle 20 Deodorant lid 21 Exhaust passage 22 Fan 22a Fan device 23 Suction side passage 24 Exhaust side passage 25 Guide tube

Claims (6)

A dust collector chamber into which drainage flows from the drainage inflow section, an oil / water separation chamber, a trap body having a trap installed to communicate with a downstream drainage outlet, and a lid that covers the grease trap body Having a grease interceptor,
An exhaust passage communicating the space between the lid and the grease interceptor body and the inside of the trap is provided, an exhaust fan is provided in the middle of the exhaust passage, and the air in the grease interceptor is forcibly sucked, The exhaust passage is exhausted to the drain outlet, and the exhaust path has a suction side and an exhaust side through the exhaust fan, and one end on the suction side is located in the space, and one end on the exhaust side Is a grease interceptor, which is located below the water surface in the trap . The grease interceptor according to claim 1, wherein a deodorizing valve is attached to the drainage inflow portion. Grease interceptor as claimed in any one of claims 1 or 2, characterized in that a check valve on the exhaust side of the exhaust passage. The exhaust fan, the grease interceptor as claimed in any one of claims 1 to 3, characterized in that provided outside the grease interceptor device. The grease interceptor according to any one of claims 1 to 3 , wherein the exhaust fan is provided inside the grease interceptor. The exhaust fan, the grease interceptor as claimed in any one of claims 1 or 3, characterized in that attached to the access port of said trap.