JP2009172563A - Conical grease filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact baffle-type conical grease filter excellent in space saving, high in maintenance characteristics and improved in flameproof property and in the sanitary aspect. <P>SOLUTION: The conical grease filter with the open bottom face for airflow and a side filtering part is very suitable for use with a pipe (about 120 mmϕ) of a circular cross section which is generally used very often as a smoke exhaust duct in broiled-meat stores or the like. Because of its shape, the conical grease filter is more compact, easier to maintain and has improved flameproof and sanitation compared with conventional flat or cylindrical grease filters. The baffle-type grease filter enables the conical grease filter to more efficiently remove the oil content contained in exhaust smoke from broiled meats or the like. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a grease filter that is stored in a smoke exhaust duct inside a smokeless roaster, a smoke exhaust duct that is suspended from a ceiling, and the like, and in particular, is intended to be stored in a smoke exhaust duct having a circular cross section (open end). It relates to a grease filter.

Traditionally, yakiniku restaurants use smokeless roasters or smoke ducts that hang down from the ceiling to the stove to smoke out the smoke that is generated when grilling meat. The smoke exhaust duct inside these smokeless roasters and the smoke exhaust duct installed from the ceiling is forcibly exhausted from the smoke inlet with a fan, and a grease filter is stored in the middle of the exhaust duct. And a grease filter for capturing oil contained in the flue gas is detachably attached to the storage portion.
In addition, a fine mesh metal mesh grease filter or a baffle type grease filter is often used as these grease filters, but the baffle type grease filter is particularly known to capture oil contained in the flue gas well.
For example, an oil and fat content capturing and collecting device for a commercial table type smokeless roaster unit main body disclosed in Japanese Utility Model Laid-Open No. 5-8307 (Patent Document 1) has a frame body containing a grease filter in a smoke collecting chamber in the main body. The oil and fat captured by the grease filter flows down and concentrates smoothly on the oil and fat outlet provided at the lower end of the frame to allow the exhausted smoke to cross and pass through 20 to 30 °. Therefore, it can be easily collected by collecting it in the grease span, making it possible to capture approximately 80% of fats and oils, and preventing effects such as preventing ignition in the body. It is what you have.
Furthermore, maintenance doors are provided on both side walls in the longitudinal direction of the main body so that the grease filter frame, the fire damper and the bottom tray can be easily attached and detached, and cleaning and other repair inspections are easy. This grease filter employs a planar baffle type filter as shown in FIG. 5 and the outline structure of paragraph numbers 0014 to 0015 of the publication, and has two plates, an upper surface plate 12a and a lower surface plate 12b. It is combined and accommodated in the frame 13 to constitute a single grease filter. When the exhaust gas containing oil and fat passes through the gap Y between the upper surface plates 12a and 12a, the exhaust gas is rapidly compressed and collides with the lower surface plate 12b, and subsequently formed by the upper surface plate 12a and the lower surface plate 12b. When passing through the gap Z, a so-called expansion movement is performed, in which it is rapidly compressed again, rotates and diffuses there, and this action is continuously performed, so that the oil and fat content and air in the flue gas are separated, The oil and fat is captured by the double-sided plates of the upper surface plate 12a and the lower surface plate 12b, and flows down to the lower end portion of the frame 13 in which the grease filter 12 is accommodated.

  Moreover, the smoke removal apparatus of the cooking table disclosed by Unexamined-Japanese-Patent No. 2004-108701 (patent document 2) is much larger than the size of a combustor surface on the combustor of the table which has a combustor for cooking on the upper surface. A smoke exhaust tube having a thin diameter (diameter of about 60 to 80 mm) is provided, a loose lower taper surface is formed at the lower end of the smoke exhaust tube, and smoke absorbing holes are provided on the circumferential surface of the lower taper surface. The upper end of the smoke evacuation tube 3 is configured to be connected to the smoke exhaust duct 6 with an exhaust box 5 in which a filter 4 (the type is not particularly shown) is exchangeably mounted.

  Further, the oil smoke filter disclosed in Japanese Utility Model Publication No. 55-141523 (Patent Document 3) is a baffle type filter formed in a general flat shape to be used by being attached to a smoke exhaust portion of a yakiniku cooker. Therefore, the filter itself is inclined and suspended so that the captured oil components are sequentially flowed to the lower side and collected.

  Furthermore, a filter used in the smokeless grilled meat stove apparatus for charcoal fire disclosed in Japanese Patent Laid-Open No. 2000-184967 (Patent Document 4) is shown in FIG. As shown in FIG. 7, the inner ring 29 and the outer ring 30 provided with the meandering flow forced wings 27 and 28 are inserted into the both rings 29 and 30, respectively, as shown in FIG. A configuration is adopted in which a baffle type filter having a cylindrical shape and a peripheral surface of which is a filter portion is combined so as to form a meandering flow forced flow path P.

  Japanese Utility Model Publication No. 5-8307   JP 2004-108701 A   Japanese Utility Model Publication No. 55-141523   JP 2000-184967 A

  By the way, in the case of the grease filter provided in the smoke exhaust duct inside the smokeless roaster of the conventional example and the smoke exhaust duct installed hanging down from the ceiling, the oil exhaust duct is captured by capturing the oil contained in the smoke exhaust. Prevents oil from adhering to the inner wall, improving flameproofness (preventing fire caused by igniting the flame when cooking oil), improving hygiene (preventing oil from adhering to the flue duct from falling to the table) However, in reality, there are many things that use a coarse metal mesh with an extremely low oil trapping effect as a grease filter to repair the appearance, flameproofing and hygiene. There were many voices of concern.

The metal mesh grease filter and the baffle type grease filter are each provided with a filter storage portion in the middle of the flue gas path in accordance with restrictions on the shape and dimensions of the equipment to be stored. A grease filter having a mold shape is detachably stored. As a result, it requires a relatively large area and volume of grease filter and its storage part, which is extremely rugged and occupies a large weight in terms of cost. There is a problem that the cost is increased because it is necessary to install smoke exhausting equipment.
For example, in the case of a smoke exhaust duct that is suspended from the ceiling, the grease filter housing is provided in a rugged shape near the ceiling in the middle of the smoke exhaust duct. In reality, there are many stores where only the smoke exhaust duct is installed without the support from the customer (yakiniku restaurant owner), the adoption of a grease filter, and the adoption of a grease filter.

  Furthermore, even if the metal mesh grease filter and the baffle type grease filter described above are placed in a duct having a circular or square cross section due to the restriction of the shape, the effective area as the grease filter is smaller than that of the duct. As a result, only an opening area of 50% or less and an average of about 30% of the area of the opening surface can be obtained. As a result, a large storage box has to be provided.

  Furthermore, it is necessary to periodically clean the grease filter in order to maintain the desired purpose such as improvement of flameproofing and improvement of hygiene, but in this case, a cleaning agent is used to efficiently remove oil. Soak in and wash. As described above, since the grease filter has a relatively large area and volume, a large container capable of immersing the entire grease filter and a large amount of cleaning agent filling the container are necessary. However, it requires a large sink and a large amount of water, which is extremely laborious and costly. As a result, it often happens that the cleaning operation becomes expensive and the desired purpose cannot be achieved.

  In view of the above-described problems, the present invention has an object to provide a baffle-type conical grease filter that is compact and saves space, is highly maintainable, flameproof, and has improved hygiene. is there.

  This is a conical type grease filter, which is solved by opening the bottom face so as to allow ventilation and making the side face a grease filter.

  This is a conical type grease filter, which is solved by opening the bottom face so as to allow ventilation and making the side face a baffle type grease filter.

  This is a conical type grease filter, which consists of an outer baffle and an inner baffle, and the outer baffle is a conical shape that allows the bottom to be ventilated and the side surface has a mountain shape from the top of the cone. A plurality of baffles with apexes facing outwards are formed with radial gaps at equal intervals and the opposite end fixed to the flange. The inner baffle is a conical bottom A plurality of baffles with a cross-sectional shape from the top of the cone and a mountain-shaped top facing inward on the side surface, and radially extending with gaps at equal intervals This is solved by fixing the end to a flange and configuring the baffle material of the outer baffle so that the crest of the baffle material of the inner baffle coincides with the baffle type grease filter.

  It is a conical type grease filter, and the bottom surface is opened to allow ventilation, and the side surface is a grease filter. Therefore, a pipe having a circular shape (120 mmφ), which is generally used very often as a flue gas duct for a yakiniku restaurant, etc. It is extremely suitable when used for (about). As a result, it is possible to provide a conical grease filter that is extremely compact compared to conventional flat and cylindrical grease filters, and that achieves space saving, high maintainability, flame resistance, and improved hygiene. became. In addition, it is a conical type grease filter that has a bottom opening that allows ventilation, and a side face that is a baffle type grease filter, making it possible to remove oil contained in flue gas such as grilled meat with higher efficiency. It has become possible to provide a conical grease filter that is extremely compact, space-saving, highly maintainable, flameproof, and hygienic.

First, the “conical type” of the conical grease filter of the present invention is a generic term for the following forms and those similar or similar to them. (See Figure 1)
Fig. 1-A Basic one having a cone-shaped apex with a circle as a bottom surface Fig. 1-B Among the above basic items, an angle is provided near the apex Fig. 1-C Among the above basic items Fig.1-D Among the basic ones, the vicinity of the apex is cut parallel to the bottom.

The conical grease filter of the present invention will be described in detail with reference to the drawings.
FIG. 2 shows a first embodiment of the present invention, which is an overall view of a conical grease filter, and shows an outline on the left side of the center line in the vertical direction and an outline of a cross section on the right side. (1) is the main body of the conical grease filter, and the bottom surface is opened to allow ventilation, and the side surface is the grease filter portion (10). The grease filter portion (10) was provided with fine mesh metal on the entire side surface except for the apex member (10d) and the bottom flange (10b).

  The conical grease filter of the first embodiment configured as described above is mainly used by storing and using it in a circular duct (about 120 mmφ), which is generally very frequently used. The diameter of the bottom surface is approximately the same as the diameter of the duct. Therefore, it is not necessary to make large irregularities in the shape of the exhaust duct for storing the grease filter, so if it is a vertical part of the duct, it can be easily processed into existing exhaust duct products and exhaust ducts installed in stores This makes it possible to realize a smoke exhaust duct that is extremely beautiful in terms of design at low cost without requiring a large and rugged storage box. Compared with conventional flat and cylindrical grease filters, it has high oil content capture performance, is extremely compact and saves space, and has improved maintainability, flameproofness, and hygiene. It is. (See FIGS. 10 to 14)

  Next, a second embodiment of the present invention will be described with reference to FIG. 3 includes an outer baffle (1a) and an inner baffle (2a) shown in FIG. 4, and is combined as shown in FIG. 5 to form a baffle type grease filter. The main body (1) is formed from a thin metal plate such as stainless steel, aluminum, or iron.

  FIG. 6 is a bottom view of the outer baffle (1a). As shown in FIG. 3, a plurality of baffles with a cone-shaped apex member (1d) and a mountain-shaped apex facing outward are formed on the side surface. 11) is provided in a radial manner with gaps (12) at equal intervals, and the end is welded and fixed to the flange (1b).

  FIG. 7 is a bottom view of the inner baffle (2a). Similar to the outer baffle (1a), it is conical and the bottom surface is opened so as to allow ventilation, and as shown in FIG. A plurality of baffle members (21) facing toward are provided radially with gaps (22) at equal intervals, and the ends are welded and fixed to the flange (2b).

  As shown in FIG. 5, the outer baffle (1a) and the inner baffle (2a) configured as described above are arranged inside the apex of the cone of the outer baffle (1a) and the apex of the cone of the inner baffle (2a). A grease filter is configured by combining the guide grooves (1c) and (2c) provided in the flanges (1b) and (2b) on the bottom surface side together while bringing the outer side into contact with each other.

  FIG. 8 is a cross-sectional view taken along the line AA in FIG. 3 and shows the positional relationship between the baffle material (11) of the outer baffle (1a) and the baffle material (21) of the inner baffle (2a). It constituted so that the crevice (12) of material (11) and the mountain top of baffle material (12) might correspond. Since the guide grooves (1c) (2c) are provided at positions (for example, every 120 °) obtained by equally dividing the circumference of the circular flanges (1b) (2b) at equal angles, which guide grooves (1c) (2c) Even if they are combined, the outer baffle (1a) and the inner baffle (2a) can be assembled with the correct positional relationship.

  FIG. 9 is an enlarged view of a part of the conical grease filter configured as described above, and is a view showing the flow of smoke. The conical bottom portion is forcibly sucked from the inside by a fan. Smoke outside. Although explanation of the oil trapping theory of the baffle-type grease filter is omitted, the smoke (5) sucked from the bottom part first passes through the gap (22) of the baffle material (21) of the inner baffle (2a). The oil contained in smoke hits the slope of the baffle material (11) of the outer baffle (1a), and the oil is caught and reflected by the slope of the baffle material (21) of the opposing inner baffle (2a). The smoke is exhausted outward from the gap (12) of the outer baffle (1a). By flowing in this manner, the oil content contained in about 70 to 90% of the smoke can be captured, although depending on various conditions such as the flow rate of the smoke.

  As in the first embodiment, the conical grease filter of the present invention configured as described above is a duct having a circular opening surface (approximately 120 mmφ) that is generally very frequently used as a flue gas duct for a yakiniku restaurant or the like. Since the main use is to store in the bottom, the diameter of the bottom surface portion is substantially the same as the diameter of the duct. Therefore, it is not necessary to make large irregularities in the shape of the exhaust duct for storing the grease filter, so if it is a vertical part of the duct, it can be easily processed into existing exhaust duct products and exhaust ducts installed in stores This makes it possible to realize a smoke exhaust duct that is extremely beautiful in terms of design at low cost without requiring a large and rugged storage box. Compared with conventional flat and cylindrical grease filters, it has high oil content capture performance, is extremely compact and saves space, and has improved maintainability, flameproofness, and hygiene. It is.

  Further, by configuring the baffle type grease filter on the side surface of the conical shape, it becomes possible to more efficiently remove oil from the flue gas, and naturally the surface of the grease filter, that is, the baffle material (11) (21). Since all of the oil is slanted, the oil that has been captured flows down downwards very efficiently and naturally according to gravity, and is separately collected in the grease receiver provided in the part where the grease filter is stored and mounted. It becomes.

  In addition, as described above, the conventional metal mesh grease filter and baffle type grease filter have an effective area smaller than that of the duct even if they are placed in a duct having a circular or square cross section due to their shape restrictions. Therefore, it was possible to obtain only an opening area of about 50% or less and an average of about 30% with respect to the area of the opening surface of the duct, and as a result, it was unavoidable to provide a large storage box. By configuring the grease filter on the side surface of the conical shape, it becomes possible to secure an opening area (an effective area as a filter surface) equal to or larger than the area of the opening surface of the smoke exhaust duct.

  Furthermore, the effective area of the filter surface, static pressure, smoke emission efficiency (wind speed), oil capture rate can be changed by changing the diameter, height and angle of the bottom of the cone according to the diameter of the duct to be installed and the desired performance. When it is stored in a circular duct, the part with a small opening area in the upper part maintains a large space in the duct, and conversely the part with a large opening area in the lower part. Since the duct space is narrowed, the grease filter as a whole has a uniform static pressure and air volume balance. Even if the smoke exhaustion speed (wind speed) is increased, no irritating inhalation sound or whistling effect is generated. All parts of the filter surface are uniform and can exhibit a high oil removal effect.

  Furthermore, since it is a compact grease filter, it can be easily put in a commercial dishwasher currently installed in most yakiniku restaurants. Therefore, by washing with used dishwashers at the same time as used dishes for each customer, it is no longer necessary to wash only oil-greased grease filters at the expense of labor and detergent. As a result, the exhaust oil collected by the grease filter does not accumulate in the grease receiver, and the fire prevention effect is dramatically improved, resulting in a fire risk. In addition, the excellent effect of greatly extending maintenance time such as cleaning of the smoke exhaust duct itself can be achieved. The main body (1) is assembled so that the outer baffle (1a) and the inner baffle (2a) can be easily separated by the flanges (1b) and (2b) and the guide grooves (1c) and (2c). It is also effective to wash more effectively if separated into a dishwasher if necessary.

  FIG. 10 shows an example in which the conical grease filter of the present invention is used at the tip of a smoke exhaust duct that hangs down from a ceiling of a yakiniku restaurant or the like toward a charcoal stove. FIG. 11 is an enlarged view of a main part. It is. An inner smoke duct (6a) and an outer smoke duct (6b) are connected to a piping duct inside the ceiling and are hanged toward a stove (not shown) so as to be extendable. The outer smoke exhaust duct (6b) is provided with a detachable storage portion (7) at the lower end tip portion, and the main body (1) of the conical grease filter is stored therein. The lower end of the storage part (7) is further provided with a holding part (7a) that can be easily removed during cleaning. The main body (1) is dropped around the entire periphery of the bottom surface of the holding part (7a). It has a flange (7b) so that it does not (see the figure on the right side of FIG. 11). (8) is a grease receiver that receives oil that has been captured and dropped by the main body (1). The main body (1) of the conical grease filter stored in this way is easily accessible, so it is very easy to attach and detach during cleaning, and the smoke exhaust oil is captured at the tip of the smoke inlet. Therefore, oil adhesion to the inner wall of the smoke exhaust duct of the smoke exhaust path after that is reduced, and an extremely high effect is exerted in the piping equipment maintenance and the flameproofing improvement of the smoke exhaust duct later. Of course, it may be stored in an intermediate part regardless of being stored in the tip part of the smoke exhaust duct, or another one may be stored upstream of the tip part and the smoke exhaust, and a plurality of parts may be provided. Needless to say.

  FIG. 12 shows a state in which the ceiling surface is embedded like a downlight, and FIG. 13 shows a state in which the storage unit (7) is stored with the smoke exhaust duct suspended from the ceiling surface. Since the smoke inlet is provided in the vicinity, it is possible to improve the appearance of the interior design and to effectively exhaust the smoke that has risen near the ceiling of the room, remove the contained oil, and discharge it to the outdoors.

  FIG. 14 shows a state applied to a smokeless roaster. When the cone is used with the apex of the cone down as shown in the figure, the cone is used with the apex up as described above. However, the effect is the same, and the oil component falls on the apexes (1d) and (2d) and functions as a grease receiver. The flue gas flows and is discharged outside as indicated by the arrow line.

In the first embodiment of the present invention, the grease filter has been described as a fine mesh metal. However, the present invention is not limited to this, and the metal fiber is made of cotton, and the cross-section is continuous foam (like a sponge). Any other filter material that is made of metal and has air permeability and can filter oil, or is nonflammable, non-flammable and non-flammable and has the above air permeability and can filter oil. It is included in the technical scope. Further, in the present invention, the baffle members (11) and (21) have been described as having a mountain shape in cross section, but the effect is the same even if they are semicircular. It is included in the technical scope of the invention. Further, in the present invention, it has been described that smoke is sucked from the bottom and the inside of the conical grease filter that are open so as to be ventilated, and then smoke is discharged toward the outside. Needless to say, the effect is the same even if smoke is exhausted. Furthermore, if the equipment uses a circular exhaust duct, it can be easily stored in the duct by simple processing regardless of the product of the exhaust duct itself or the installed exhaust duct. The present invention can be applied to a wide range regardless of the examples described in FIGS.

It is a figure which shows the definition of the cone shape of this invention. 1 is an overall view of a first embodiment of the present invention. It is a whole figure of 2nd Example of this invention. It is a figure which shows the component of this invention. It is a figure which shows the state which assembled the component of this invention. FIG. 4 is a bottom view of FIG. 3. FIG. 5 is a bottom view of FIG. 4. It is the sectional view on the AA line of FIG. It is a figure which shows the flow of the flue gas of this invention. It is a figure which shows the state which applied this invention to the smoke exhaust duct. It is the elements on larger scale of FIG. It is a figure which shows the state which applied this invention to the smoke exhaust duct. It is a figure which shows the state which applied this invention to the smoke exhaust duct. It is a figure which shows the state which applied this invention to the smokeless roaster.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 1a Outer baffle 1b, 2b, 7b, 10b Flange 1c, 2c Guide groove 1d, 2d, 10d Apex member 11, 21 Baffle material 12, 22 Crevice 5 Smoke 6a Inner duct 6b Outer duct 7 Storage part 7a Holding part 8 Grease 10 grease filter

Claims (3)

  A conical grease filter, wherein the bottom surface is open to allow ventilation and the side surface is a grease filter.   A conical grease filter, wherein the bottom surface is opened to allow ventilation and the side surface is a baffle type grease filter. This is a conical grease filter, which consists of an outer baffle and an inner baffle, and the outer baffle is a conical shape with the bottom open to allow ventilation, and the side has a mountain-shaped cross section from the top of the cone. A plurality of baffle materials with mountain-shaped apexes facing outward are extended radially at equal intervals, and the opposite end is fixed to a flange.
The inner baffle is a conical shape that allows the bottom surface to be ventilated, and on the side surface, a plurality of baffles with a mountain-shaped cross section from the top of the cone and a mountain-shaped vertex facing inward are spaced at equal intervals It extends radially and is constructed by fixing the opposite end to the flange,
A conical grease filter characterized in that a baffle-type grease filter is configured such that the gap between the baffle materials of the outer baffle and the peak of the baffle material of the inner baffle coincide.

Images