TWI221894B - Composite filter for range hood - Google Patents

Abstract

Disclosed is a composite filter for range hood, of which the object is to provide a filter of a simple construction that does not damage air permeability even if the filter is used for a long time and that, when in use, can sufficiently capture. The solution of the present invention is a composite filter 10 that is detachably mounted on a sucking port of a range hood for liquefying and thus capturing the soot, or the like, in the waste gas sucked by the range hood. The composite filter 10 comprises planar filters 11, 12, 13 consisting of two sheets respectively at the front and back and one sheet at the center and which are made in planar sheets with many meshes, corrugated filters 14, at least two sheets, interposed between the planar filters 11, 12, 13 and made in corrugated sheets with many meshes, and a frame body for fixing outer peripheral edges of the corrugated filters 14 and planar filters 11, 12, 13 and having an oil storing passage for flowing or storing the liquefied soot, or the like.

Description

1221894 V. Description of the invention: 1) Technical field of the invention • The present invention relates to a kind of filtration, and particularly relates to a filter disposed above a conditioner and the like, and is used for exhausting oily fumes and steam generated from a fryer used in the conditioner to the outside. The exhaust gas is related to the compound filter of the range hood. Prior technology • 20 cases of machine exhaust hoods As shown in Figure 1, it is used in 100 sets, placed above the conditioner, etc. > Exhaust the exhaust gas containing oil fume and water vapor generated by the fried steel used by the conditioner to the outside of the room. The range hood 20 is shown in Figure 2. It attracts D 21 equipped with a filter ′ to liquefy the oil fume and so on with this transition Is, and uses the internal suction fan to discharge other exhaust gas to the outside of the room. That is, the range hood 20 'uses a filter to liquefy the part 5 that catches the rising oil fume, such as a frying pan, and discharges other parts to the outside, while using a filter to capture the fume. • Part of the important function of the range hood 20 One. If all the hoods of the range hood 20 are liquified, the liquefied oil will hang black dirt from the air duct, which will not only pollute the outer wall surface J, but also the neighbors. Previously, the range hood was used with a hood, a punching plate (a large number of holes were punched through the metal flat plate), or only about 1 or 2 slatted nets were overlapped, which could not fully capture the oil fume. The reason why the previous filters are so constructed is that, because the filter hinders the exhaust gas, a large-sized suction fan is needed to fully exhaust the gas through the filter. Recently, however, the inventors have set Sirocco fans at both ends of the motor's rotating shaft, and improved the exhaust duct 9 in the range hood while miniaturizing the suction fan. Developed a range hood with suction power) However, we also developed a powerful filter for range hoods such as cheap M. Inspiratory wind

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1221894 V. Description of the invention (2) The fan suction power is increased, and it is necessary to consider the effective implementation of capture and liquefaction of oil fume. Therefore, the inventors have discovered how to make the filter used in such a range hood more effective. 'After many discussions', it is found that the filter itself actively forms a path for liquefied oil flow, which will lead to good results and complete the present invention. / Problems to be solved by the invention:

According to the above-mentioned situation, the present invention aims to solve the problem of developing a device that can achieve sufficient liquefaction capture of oil fume and maintain air permeability. That is, the object of the present invention is to provide a filter with a simple structure that does not impair the air permeability even if it is used for a long time, and can sufficiently capture oil smoke during use. Means for solving the problem: In order to solve the above problem, the method adopted by the present invention is accompanied by the symbols used in the description of the actual state described later, as follows: Man ... A kind of composite filter 1 0 'It is characterized in that it can be freely installed in the range hood 2 〇 and the inlet 2 1 'to liquefy and capture the oil fume in the exhaust hood 2 〇

Even if this composite filter 1 〇 includes a flat filter 丨 丨, 1 2, 1 3, it has a majority, the shape of the eye, each of the front and back 丨 and the middle i piece total 3 pieces; wave plate filter 1 4 , Sandwiched between these flat filters 丨 丨, 丨 2, 丨 3, with most nets, wavy plate-like, at least 2 pieces; and the frame 1 5, fixed these wave plates too; consider 2:14 and the above-mentioned flat plates The outer periphery of the transition device 11, 1 2, 1 3, and has an oil storage channel 6 for discharging or storing liquefied soot and the like. That is, the composite filter related to the present invention is as shown in FIG. 2 and FIG. 3 and can be detached freely in a range hood 20 that constitutes a kitchen utensil group 100 as shown in FIG. 1, as shown in FIG.

Page 5 1221894 5. Description of the invention (3) As shown in Figure 8, from the front (to the gas furnace 30 side) in order: the front flat filter 11, the wave filter 14, the middle flat filter 13, the wave filter E1 4. The back flat filter J 2 is 5 pieces in total. The important thing here is to form a "flat plate" front. In this case, each wave plate filter 14 is "flat", and although each filter has a "ventilation port", it is tightly connected to each other, and each wave plate filter With a "wave plate", that is, a straight wave portion 14a as shown in Figs. 6 to 8, the wave portion 14a forms a "channel" of the wave portion Ua between adjacent filters. The "transportation" of a wave 邛 14a has two meanings as shown in Figures 7 and 8: The second becomes the "channel" for the circulation of captured liquefied "oil droplets", and the oil droplet flow becomes the "channel" for the circulation of exhaust gas. . Therefore, each wave board can reduce the number of crying drops, and the wave sections can also be inclined at 1 4 a. Two wave plate filters 14 Eight waves ° 卩 1 4 a Although the most effective is the vertical direction, at least one wave plate filter 14 can be arranged in the vertical direction. Because each wave plate filter 14 and plate filter 丨 丨, 1 2, 丨 3 outer periphery, it is stored by the frame 15 of the channel 16 ', so the waves of the wave plate filter 14 are passed to the frame.体 15 内。 Body 15 inside. Therefore, the liquefied oil fume reaches the oil storage passage 16 in the frame 15 through the wave sections ... Difficult ::,;, front flat filter 11, wave plate transition device 1, 4, + flat plate filter state 1, 3, wave plate filter 1, 4, back plate filter 丨 2 a total of 5 filters, respectively, forming ventilation on the plate It can be formed by punching, weaving metal wires and other wires ... Any wave filter 14 needs a wave portion 14a,

1221894 V. Description of the invention (4) 俾 Form a channel for oil droplets to flow, and the front flat filter 11, the back flat filter 12 and the middle flat filter i 3, in order to reduce the overall thickness of the composite filter. Need to be "flat". According to the composite filter 10 configured as described above, when this is installed in the suction port 21 of the range hood 2 0 and the suction fan of the range hood 2 0 is operated, the oil fume generated by the gas furnace 3 0 and the like are compounded. The filter 10 is sucked into the range hood 20, but when the fume passes through the composite filter 10, it is cooled and liquefied by the front flat filter 丨 and the like constituting it. The liquefied soot initially became small oil droplets attached to the front flat filter 11 and so on. However, due to the "surface tension" of the oil, the accumulation of small oil droplets and small oil droplets became large oil droplets. After becoming large oil droplets, the surface tension is stored in the parts where the filters are in contact with each other. In the end, the surface tension exceeds gravity, and the oil flow is formed through the wave portion 14a, and as a result, it flows into the oil storage channel 16 of the frame 15. _ The oil flowing into the oil storage channel 16 of the frame 15 through the wave sections 1 4 a sometimes stops in the oil storage channel 16. However, the embodiment shown below is shown in FIG. 7. An opening 16a is formed in a part of the channel 16 and the opening 16a flows into the large-volume oil storage tank (not shown) provided in the hood 20 body. Since the oil storage tank can be detached from the range hood 20, it is sufficient to disassemble the oil storage tank and pour out the oil therein. As mentioned above, the flow of liquefied oil is not generated in all the wave sections 4a, and of course occurs when the oil is stored to a certain amount, so "exhaust gas" circulation is often formed in each wave section 1a. In addition, since a total of 5 filters including the front flat filter 1 丨 are used to capture the oil fume, the "dust" of the oil in each filter will not occur. In addition, filters such as the front flat filter 11 and the wave filter

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For a long time, the wavy part 1 4 a keeps its distance, so it will not cause the liquefied oil to stick to the filter. The main reason is that the liquefied oil flows quickly from each wave section 4a ', so the air permeability of each front flat filter 丨 is still maintained. The composite filter 10 according to the present invention does not impair the breathability even after long-term use, and can sufficiently capture oil smoke during use. Embodiments of the invention: 'Secondly, the composite filter according to the embodiment shown in the figure illustrates the invention made as described above. FIG. 1 is a kitchenware set 100 including a range hood 20 that assembles the composite filter related to the invention. Front view, gas stove 30 hens by kitchenware set 100

The exhaust gas containing oil fume and water vapor produced by Biyin is absorbed by the hood 20, which is arranged in the upper row. As a result of this suction, part of the oil fume is captured by the filter 10 of the range hood 200 and the remaining part is taken out by the fan inside the range hood 200. 'The suction port 21 of the exhaust hood 20 is shown in Figs. 2 and 3, and can be freely mounted with the composite filter 1 of the present invention. The composite filter 10 has the shape shown in Figs. 4 to 5 At first sight, it is almost the same as the previous user, but the structure shown in Figures 6 to 8 is completely different from the previous one. That is, the composite filter related to the present invention has: a front flat filter 11 'including a plurality of punched holes or meshes into a flat shape; a back flat filter & an intermediate flat filter 1 3; and two wave filter丨 4, sandwiched between the above-mentioned transition devices, with most punching holes or meshes into a flat plate shape; a total of 5 filters. This special 5-piece transitional device 'is for fear of dispersion, so as shown in Fig. 4 and Fig. 5, the surrounding area is assembled with a frame of 1 $. The frame 15 is shown in Figs. 7 and 8, and an oil storage passage is formed in the frame.

Page 8 1221894 V. Description of the invention (6) 1 6. The oil storage channel 16 communicates with the end of the wave section 丨 4 of each wave plate filter 丨 4 to receive the oil droplets flowing through each wave section 14a. An opening 1 6 ^ is also formed in a part of the oil storage channel 16 'as shown in FIG. 7', so that the oil droplets flow into the exhaust hood 20 through the opening 16 a into the large-volume oil storage tank not shown in the figure. . Since this oil storage tank can be removed from the range hood 20, the oil storage tank can be removed from the opening 丨 6a and poured out elsewhere. The front flat filter 丨 丨 and the back flat filter 12 constituting the composite filter 10 are shown in FIG. 4 and FIG. 5, and are formed in the shape of a letter as shown in FIG. 4 and FIG. 5. This embodiment is made of metal. Since the flat plate filter 11 on the front side is the first part to be exposed to oil fume, etc., it is necessary to use a small mesh as much as possible to effectively capture the oil fume gauge. On the one hand, since the back flat filter] 2 is the exhaust gas exhaust surface of the composite filter 10, its mesh is also designed to make the air permeability as good as possible 'so that it is larger than the front flat filter. In addition, when the flat filters 11 and 12 on the front and rear surfaces are used to clean the entire composite filter, the cleaning brush and the like can easily pass through the front surface and become like a flat plate. The middle flat filter 13 in the center is also a flat plate shaped like a letter, which is formed by punching through metal or a slatted net. Since the middle flat filter j 3 is located at the middle position, its mesh is approximately halfway between the front flat filter 丨 丨 and the back flat filter 12. This front plate is used only; the rear plate filter 1, the back plate filter 12 and the middle plate filter 13 are sandwiched by two wave plate filters 1 and 4, as shown in this embodiment, after punching in the aluminum plate to form a large number of holes As shown in FIG. 6, a plurality of wave portions 14a are formed in parallel. The wave plate filter 4 of this embodiment is such that the distance between the wave portions 14a (the distance from the wave peak to the peak) is about 10 mm, and each wave portion

1221894 V. Description of the invention (7) '" "-The amplitude of l4a (the distance between the peak of the wave and the valley) is about 2. 5mm ~ 3mm. In addition, the wave plate filter 14 of this embodiment is most effective by arranging the wave portions 丨 4a downwards' to move each wave portion 1 4 a upward and downward. When the oil droplets captured in each wave portion 14a flow, each wave portion 4a may also be inclined. Each filter configured as above is shown in FIGS. 6 to 8 described above, and is fixed by a frame 15 mounted on the suction port 21 on the side of the range hood 20, thereby becoming as shown in FIG. 4 and FIG. As shown in FIG. 5, the integrated composite filter 10 is formed. What is important here is that the wave portion 14a of each wave plate filter 14 extends into the frame body 15 '. Therefore, the oil captured by the composite filter 10 flows in the oil storage channel 16 of the frame body 5. Effects of the Invention: As detailed above, the present invention is exemplified by the above embodiment. A composite transition device 10 is characterized in that it can be freely mounted on the range hood 20 suction port 21 and liquefied to capture the range hood 2 〇 The smoke fume in the exhaust gas is used, and the composite filter 10 includes: flat filter 1 1, 1 2, 1 3, a flat shape with a large number of meshes, one on each of the front and back and a total of 3 on the middle 3 Sheets; wave filter 1 4 sandwiched between these plate filters 11, 1 2, 1 and 3, having a wave plate shape with most meshes, at least 2 pieces; and a frame 15 for fixing these wave filter 1 4 and each of the above-mentioned flat filters 1 丨, i 2, 1 3, and have an oil storage channel 16 for discharging or storing liquefied oil fume, etc., so a composite filter 10 can be provided with a simple structure, even if long It will not damage the air permeability when used for a long time, and can fully capture the oil fume during use. Brief description of the drawings: FIG. 1 is a kitchen utensil with an assembly range hood of the present invention

Page 10 1221894 V. Description of the invention (8) Group front view. FIG. 2 is a longitudinal sectional view of the range hood shown in FIG. 1. FIG. Figure 3 is an enlarged bottom view of the same range hood. Fig. 4 is a composite filter according to the present invention, (1) is a front view, (2) is a side view, and (3) is a plan view. Figure 5 is a rear view of the same composite filter. Fig. 6 is the internal structure of the same composite filter. A partial enlarged cross-sectional view of each filter is shown in section, and a partial front view of the composite filter with arrows attached to each filter is shown. FIG. 7 is a partially enlarged cross-sectional view taken along line 1-1 of FIG. 6. Fig. 8 is a partially enlarged sectional view taken along line 2-2 of Fig. 6. Explanation of component symbols:

10 · · • Composite filter 11 · · · Front flat filter 12 · · · Back flat filter 13 · · · Middle flat filter 14 · · · Wave filter 14a · · • Wave section 15 · · • Frame 16 • • • Oil storage channel 16a • • • Open 1 = 1 20 • • • Range hood 21 • • • Attract D 30 • • • Gas stove Page 11 1221894 V. Description of the invention (9) 1 〇〇 ·· · Kitchenware set IBΪ Page 12 1221894

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Claims (1)

1221894 6. Scope of patent application 1. A composite filter for a range hood is detachably mounted on the suction hood suction port for liquefying and capturing oil fume and the like in the exhaust gas sucked by the range hood. The composite filter includes: a flat filter having a flat shape with a large number of meshes, a total of 3 pieces on each of the front and back surfaces and a middle piece; a wave plate filter sandwiched between these flat filters and having a wave of most meshes Plate-shaped, at least two pieces; and a frame body, which fixes the wave plate filters and the outer periphery of each of the flat plate filters, and has an oil storage channel for discharging or storing liquefied soot and the like. Page 14