WO2021207949A1

WO2021207949A1 - Oil fume separator for kitchen range hood

Info

Publication number: WO2021207949A1
Application number: PCT/CN2020/084808
Authority: WO
Inventors: 何少敦; 何可彬; 苏丹滢
Original assignee: 深圳市迪尔安科技有限公司
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-10-21

Abstract

An oil fume separator for a kitchen range hood. The oil fume separator is a flow guiding grid (1) formed by stacking flow guiding vanes (1.1; 1.2) one above the other vertically, two adjacent flow guiding vanes (1.1; 1.2) have a ventilation gap therebetween, the ventilation gap constitutes a ventilation separation passage (1.15), the ventilation separation passage (1.15) is in a zigzag state, and the flow guiding vanes (1.1; 1.2) are horizontally arranged, the outer side of a frame of the flow guiding grid (1) is an oil fume inlet (1.19A) and the inner side is an oil fume outlet (1.19B), and the oil fume enters the flow guiding grid (1) from the outer side of the frame through the oil fume inlet (1.19A), collides with the upper and lower side walls of the flow guiding vanes (1.1; 1.2) repeatedly in a zigzag path and then is discharged from the oil fume outlet (1.19B).

Description

Oil fume separator of kitchen range hood

Technical field

The invention relates to a kitchen range hood, in particular to an oil fume separator of a kitchen range hood.

Background technique

Range hoods, also known as range hoods, are kitchen appliances that purify the kitchen environment. The oil fume separation of the range hood is a very critical issue. At present, the actual grease separation rate of the range hood is not very high, which seriously affects the environmental cleanliness and the working performance of the range hood.

Summary of the invention

In order to solve the problems of the prior art, the present invention proposes an oil fume separator for a kitchen range hood. Since the oil fume separator is a diversion grid formed by superimposing diversion sheets one by one up and down, it has instantaneous confinement and parallelism. The ability to absorb a large amount of smoke, and the oily smoke separation rate is higher. In addition, the disassembly and assembly of the oil fume separator is easier, and it is more convenient to clean the oil stains on a daily basis.

The technical solution adopted by the present invention to solve the technical problem is: an oil fume separator for a kitchen range hood, which is characterized in that the oil fume separator is a diversion grid formed by superimposing diversion sheets one by one up and down. The air guide grille has a rectangular three-frame or four-frame structure, positioning members are arranged on the upper and lower side walls of the air guiding sheet, and there is a ventilation gap between two adjacent air guiding sheets, and the ventilation gap Ventilation dividers are formed, the ventilation dividers are in a tortuous state, the flow guide sheets are arranged horizontally (the pages are in a horizontal state), the outside of the frame of the flow guide grille is an oil fume inlet and the inside is an oil fume outlet. It enters the diversion grille from the outer side of the frame through the oil fume inlet, repeatedly collides with the upper and lower side walls of the deflector sheet in a tortuous path, and then is discharged from the oil fume outlet.

In a preferred solution, the upper and lower side walls of the guide leaf are wavy curved surfaces, and the cross section of the guide leaf is a wave structure.

In a preferred solution, the deflector sheet is a flat straight plate structure.

In a preferred solution, a plurality of longitudinal partitions are further provided on the upper and lower side walls of the guide sheet, and the longitudinal partitions divide the ventilation partition into a repeatedly tortuous state.

Preferably, the cross section of the guide leaf is further provided with ribs, and the ribs are arranged at intervals along the longitudinal direction.

Preferably, the positioning member is a plug pin and a positioning hole, a plug pin is provided on one side of the guide leaf and a positioning hole is provided on the other side, and the plug is inserted into the positioning hole to make the same The adjacent guide sheets are superimposed on top and bottom, and then positioned and fixed.

In a preferred solution, two ends of the diversion grid are respectively provided with a sleeve, the sleeve has a groove-shaped structure, and the sleeve wraps and fixes the series-connected diversion sheet.

In a preferred solution, according to the direction of the flue gas flow, the bending angles of the ventilation ducts are successively reduced.

In a preferred solution, through holes are arranged in the longitudinal direction of the guide sheet, and the through holes make the guide grille internally form oil leakage holes that communicate up and down.

The beneficial effects of the present invention are: the present invention proposes an oil fume separator for a kitchen range hood. Since the oil fume separator is a diversion grille formed by superimposing the diversion sheet up and down one by one, it has instant confinement and parallelism. The ability to absorb a large amount of smoke, and the oily smoke separation rate is higher. In addition, the oil fume separator is easy to disassemble, making daily cleaning of oil dirt more convenient.

Description of the drawings

Figures 1 to 5 are schematic diagrams of the structure of the first embodiment of the present invention. Figure 1 and Figure 2 are three-dimensional schematic diagrams of the overall structure (Figure 1 is a three-dimensional view, and Figure 2 is a front view); Figure 3 is a partial structural schematic diagram, Figure 4 is a partial structural enlarged schematic diagram (three-dimensional view), and Figure 5 is an enlarged schematic cross-sectional view (that is, It is a schematic diagram of the design parameters of the ventilation divider), and the direction of the arrow in Figure 5 is the flow direction of the smoke.

Fig. 6 and Fig. 7 are partial structural diagrams of the second embodiment of the present invention. Fig. 6 is a three-dimensional schematic diagram of a partial structure, and Fig. 7 is an enlarged schematic diagram of a partial structure.

Figures 8 and 9 are schematic diagrams of the structure of the third embodiment of the present invention. Fig. 8 is a three-dimensional schematic diagram of the overall structure, and Fig. 9 is an enlarged schematic diagram of a partial structure.

Figures 10 and 11 are partial structural diagrams of the fourth embodiment of the present invention. Figure 11 is an enlarged schematic diagram of a partial structure.

Fig. 12 is a schematic structural diagram of a fifth embodiment of the present invention.

Fig. 13 is an enlarged schematic diagram of a partial structural cross-section of the sixth embodiment of the present invention (that is, a schematic diagram of design parameters of the ventilation divider), and the direction of the arrow in the figure is the flow direction of the smoke.

14 and 15 are enlarged schematic diagrams of the partial structure of the seventh embodiment of the present invention (the direction of the arrow in the figure is the flow direction of smoke), wherein FIG. 14 is an enlarged schematic diagram of the partial structure, and FIG. 15 is an enlarged schematic cross-sectional view of the partial structure.

Fig. 16 is an enlarged schematic diagram of a partial structure of the eighth embodiment of the present invention.

Figure 17 is an enlarged schematic diagram of a partial structural cross-section of the ninth embodiment of the present invention (the direction of the arrow in the figure is the flow direction of smoke).

In the picture:

1. Diversion grille, 1A left grille, 1B right grille;

1.1, 1.2 Diversion sheet;

1.11 Positioning member, 1.11A bolt, 1.11B positioning hole;

1.12A, 1.12B ribs;

1.131 wave trough, 1.132 wave crest;

1.14A, 1.4B bending angle;

1.15 Ventilation divider;

1.16A1, 1.16A2, 1.16A3, 1.16B1, 1.16B2 longitudinal partitions;

1.17 through hole;

1.18A first bending point, 1.18B second bending point, 1.18C third bending point, 1.18D fourth bending point;

1.19A flue gas inlet, 1.19B flue gas outlet;

1.110A, 1.110B cover, 1.110A1, 1.110A2 side wall, 1.110A3 slot, 1.110A4 slot bottom.

Detailed ways

As shown in the figure, in this example, a fume separator of a kitchen range hood is a diversion grille 1 which is superimposed one by one up and down by the diversion sheet 1.1. The diversion grille 1 has a rectangular three-frame structure. , The upper and lower side walls of the guide leaf 1.1 are wavy curved surfaces, and the cross section of the guide leaf 1.1 is a wave structure (the longitudinal direction of the guide leaf constitutes a rectangular three-frame, and the guide leaf 1.1 has two bending corners) , The upper and lower side walls of the guide sheet 1.1 are provided with a number of positioning members 1.11 for series connection. There are ventilation gaps between adjacent guide sheets. The ventilation gap constitutes a ventilation partition 1.15, and the ventilation partition 1.15 is wavy In a tortuous state, the guide leaf 1.1. is arranged horizontally (that is, the page is in a horizontal state), and each guide leaf is superimposed on top and bottom. The outside of the frame of the diversion grill 1 is the oil fume inlet 1.19A and the inside is the oil fume At the outlet 1.19B, the oil fume enters the guide grille from the outer side of the frame through the oil fume inlet 1.19A, and repeatedly collides with the side wall of the guide sheet 1.1 in the tortuous path, and then is discharged from the oil fume outlet 1.19B. The present invention suggests that because the guide grille 1 can form a large-volume space inside, it has the ability to instantly confine and absorb a large amount of smoke, and because the oil smoke collides with the side wall multiple times in the ventilation compartment, the oil mist is sticky. The probability of attachment is greatly increased, so that the oil fume separation rate can be significantly improved.

Figure 5 shows that in this example, the ventilation duct 1.15 has 6 bending points. The figure shows that the oil fume enters the diversion grille from the outer side of the rectangular three-frame in a horizontal direction through the oil fume inlet 1.19A, and moves inward along the upper and lower tortuous paths in the ventilation compartment 1.15 while repeatedly interacting with the diversion sheet. The upper and lower side walls collide and are discharged from the oil fume outlet 1.19B. During the collision, the oil mist adhered to the upper and lower side walls of the guide leaf. The present invention suggests that in other embodiments, preferably, 2-6 bending points of the ventilation divider can be selected.

Figure 5 shows that the optimal design parameters of the ventilation divider 1.15: the bending angle α can be selected from 90°-130°; A/L≤0.5); The absolute size of width A can be selected from 2.5mm-30mm. In the figure, the height of the diversion grid is H and the thickness is B. The design of the ventilation channel directly affects the ventilation effect. When other parameters remain unchanged, the height H size becomes smaller, the ventilation area at the entrance of the diversion grille becomes smaller, and the ventilation resistance becomes larger; the aspect ratio A/L becomes smaller. The ventilation resistance becomes larger; the more bending points, the greater the ventilation resistance.

Fig. 4 shows that in this example, the positioning member 1.11 for series connection is a pin 1.11A and a positioning hole 1.11B, and the positioning member 1.11 is arranged along the longitudinal gap. A plug 1.11A is provided on one side (upper or lower side wall) of the deflector sheet 1.1, and a positioning hole 1.11B (positioning hole is a socket with a hole) is provided on the corresponding position on the other side, and the plug 1.11A Insert into the positioning hole 1.11B, the guide sheets can be aligned up and down one by one, and the fixed ribs can be connected in series.

The present invention suggests that, in this example, the deflector sheet 1.1 should be processed by injection molding. Therefore, the positioning member and the deflector sheet body can be integrally molded by injection molding. It is a preferred solution of the present invention to provide a series connection positioning member with integrated injection molding on the deflector sheet 1.1. The purpose is to make the deflector sheet easier to align and connect in series when making the deflector grid, and can be connected according to needs. Stacked up and down to form oil fume separators of different heights H. The present invention suggests that surface treatments, such as vacuum coating, spray coating, etc., can be performed on the deflector sheet made of plastic material to make it easier to clean.

Fig. 6 and Fig. 7 are partial structural diagrams of the second embodiment of the present invention. Fig. 6 is a three-dimensional schematic diagram of a partial structure, and Fig. 7 is an enlarged schematic diagram of a partial structure. As shown in the figure, the difference from the first embodiment is that in this example, the cross section of the deflector sheet 1.1 is also provided with a number of ribs (such as 1.12A and 1.12B). The ribs are arranged at intervals along the longitudinal direction, and the ribs, the positioning member and the sheet body can be integrally molded by injection molding. The function of the rib is to strengthen the strength of the deflector sheet.

Figures 8 and 9 are schematic diagrams of the structure of the third embodiment of the present invention. Fig. 8 is a three-dimensional schematic diagram of the overall structure, and Fig. 9 is an enlarged schematic diagram of a partial structure. As shown in the figure, the difference from the first embodiment is that in this example, the guide grille 1 is composed of a left grille 1A and a right grille 1B. Comparing Figure 9 with Figure 3, in this example, the deflector sheet 1.1 has only one bending angle. The guide grid 1 is composed of a combination of the left grid 1A and the right grid 1B, and the purpose is to reduce the overall size of the guide sheet 1.1 to facilitate injection molding.

Figures 10 and 11 are partial structural diagrams of the fourth embodiment of the present invention. Figure 11 is an enlarged schematic diagram of a partial structure. As shown in the figure, the difference from the third embodiment is that in this example, the two ends of the left grill 1A are also provided with covers 1.110A and 1.110B (the right grill structure is similar), and the cover has a groove-like structure. . As shown in Fig. 11, the sidewalls 1.110A1 and 1.110A2 of the sheathing 1.110A have wavy curved surfaces that match the adjacent guide flaps, and the sheathing wraps and fixes the top and bottom guide flaps connected in series. In this example, after the baffle sheets are aligned and connected one by one by the positioning member 1.11, the wraps 1.110A and 1.110B can be easily wrapped around the two ends of the left grille 1A. Because the deflector sheet 1.1 is in a single-piece bulk state before being connected in series, it is difficult to align each deflector sheet up and down one by one without the serial positioning of the positioning components, and it is also difficult to cover 1.110A and 1.110. B is enclosed at both ends of the left grille 1A. In this example, the positioning member plays the role of alignment. In order to make it easier to disassemble, the positioning member (between the pin and the positioning hole) does not need to be tightly fitted; the sleeves at both ends play a fixed role. It is very convenient to disassemble and assemble during daily cleaning. You only need to disassemble the covers at both ends to easily disassemble the diversion grille. The present invention suggests that the slot-shaped structure of the sheath is only a preferred solution of the present invention. In other embodiments, the slot-shaped sheath can also be replaced with a ring, which can also have a telescopic function, such as a rubber ring.

Fig. 12 is a schematic structural diagram of a fifth embodiment of the present invention. The difference from the first embodiment is that, in this example, the air guide grid 1 has a rectangular four-frame structure (the longitudinal direction of the air guide leaf forms a rectangular four-frame frame, and the air guide leaf 1.1 has four bending corners).

Fig. 13 is an enlarged schematic diagram of a partial structural cross-section of the sixth embodiment of the present invention (that is, a schematic diagram of design parameters of the ventilation divider), and the direction of the arrow in the figure is the flow direction of the smoke. Compared with Fig. 5, the difference from the first embodiment is that in this example, according to the direction of the flue gas flow, the bending angle of the ventilation partition 1.15 becomes smaller in turn. In this example, the bending angle corresponding to the first bending point 1.18A is a1, the bending angle corresponding to the second bending point 1.18B is a2, and the bending angle corresponding to the third bending point 1.18C is a3, The bending angle corresponding to the four bending point 1.18D is a4, and the angle value is a1>a2>a3>a4. In this example, the successively smaller bending angles can enable the oil fume separator to gradually capture oil mist particles with smaller and smaller particle sizes during the flow of oil fume.

14 and 15 are enlarged schematic diagrams of the partial structure of the seventh embodiment of the present invention (the direction of the arrow in the figure is the flow direction of smoke), wherein FIG. 14 is an enlarged schematic diagram of the partial structure, and FIG. 15 is an enlarged schematic cross-sectional view of the partial structure. Compared with FIG. 13, the difference from the sixth embodiment is that in this example, the upper side wall of the deflector sheet 1.1 is also provided with longitudinal partitions 1.16A1, 1.16A2, 1.16A3 and the lower side wall is provided There are longitudinal partitions 1.16B1 and 1.16B2. In this example, the longitudinal baffle is provided to further improve the collision adhesion effect of the oil mist in the smoke. The present invention suggests that in this example, due to the provision of longitudinal partitions, the width-to-length ratio of the ventilation duct can be increased.

Fig. 16 is an enlarged schematic diagram of a partial structure of the eighth embodiment of the present invention. Compared with Fig. 14, the difference from the seventh embodiment is that in this example, the baffle sheet 1.1 is further arranged with through holes 1.17 arranged in a longitudinal direction. The through hole 1.17 makes the diversion grid 1 internally constitute an oil leakage hole communicating up and down. As shown in the figure, the through hole 1.17 is set at the trough 1.131. Since the deflector sheet 1.1. is arranged horizontally (that is, the page is horizontal), the oil stains adhering to the deflector sheet can drip down along the through hole 1.17 Thereby the guide grille is discharged.

Figure 17 is an enlarged schematic diagram of a partial structural cross-section of the ninth embodiment of the present invention (the direction of the arrow in the figure is the flow direction of smoke). Compared with FIG. 15, the difference from the seventh embodiment is that in this example, the deflector sheet 1.1 has a flat straight plate structure. A number of longitudinal partitions are arranged to separate the linear ventilation partitions formed between the adjacent guide sheets 1.1 and 1.2 into a repeatedly tortuous state.

The present invention reminds that the "level" mentioned in the present invention is not equal to the "level (0 degree)" in the mathematical concept, and is only used to explain the technical content of the present invention, and is not limited to the mathematical "level" in the implementation. (0 degree)". Moreover, the above are only some of the preferred embodiments listed in the present invention. In addition, according to the technical solution proposed by the present invention, the cross-sectional shape, the longitudinal structure, the structure of the positioning member, the sheath, etc. of the deflector sheet can also be adjusted accordingly to realize more embodiments. All equivalent replacements or adjustments or improvements made on the basis of the technical solution proposed by the present invention should be included in the protection scope of the present invention.

Claims

An oil fume separator for a kitchen range hood, which is characterized in that the oil fume separator is a diversion grid formed by superimposing diversion sheets one by one up and down, and the diversion grid is a rectangular three-frame or With a four-frame structure, positioning members are arranged on the upper and lower side walls of the guide leaf, and there is a ventilation gap between two adjacent guide leafs. In the state, the guide leaf is arranged horizontally, the outer side of the frame of the guide grille is an oil fume inlet and the inner side is an oil smoke outlet. In the tortuous path, it repeatedly collides with the upper and lower side walls of the guide leaf and then is discharged from the oil fume outlet.
The oil fume separator for a kitchen range hood according to claim 1, wherein the upper and lower side walls of the guide leaf are wavy curved surfaces, and the cross section of the guide leaf is a wave structure.
The oil fume separator for a kitchen range hood according to claim 1, wherein the deflector sheet is a flat straight plate structure, and the upper and lower side walls of the deflector sheet are also provided with a plurality of longitudinal partitions , The longitudinal partition divides the ventilation partition into a repeatedly tortuous state.
The oil fume separator for a kitchen range hood according to claim 2, characterized in that a plurality of longitudinal partitions are provided on the upper and lower side walls of the deflector sheet, and the longitudinal partitions divide the ventilation passages. Divided into a state of repeated twists and turns.
The oil fume separator of a kitchen range hood according to claim 2 or 3, wherein the cross section of the guide leaf is further provided with ribs, and the ribs are arranged at intervals along the longitudinal direction.
The oil fume separator of a kitchen range hood according to claim 2 or 3, wherein the positioning member is a pin and a positioning hole, and a pin is provided on one side of the guide leaf and the other is on the other side. A positioning hole is provided at the corresponding position on the side, and the plug pin is inserted into the positioning hole to make the adjacent guide sheets superimposed up and down to be positioned and fixed.
The oil fume separator for a kitchen range hood according to claim 2 or 3, wherein the two ends of the diversion grille are respectively provided with a cover, and the cover has a groove-shaped structure, so The wrapper wraps and fixes the series-connected guide sheets.
The oily fume separator for a kitchen range hood according to claim 2, wherein the bending angle of the ventilation duct becomes smaller in sequence according to the direction of the flue gas flow.
The oil fume separator for a kitchen range hood according to claim 2 or 3, characterized in that the guide leaf is further arranged with through holes arranged in the longitudinal direction, and the through holes make the guide grille internally formed Oil leak holes connected up and down.