Three-cavity range hood
By designing a three-chamber range hood, which combines a main air inlet and a secondary air inlet with an oil filter and a baffle plate, the problem of poor oil fume separation in existing technologies is solved, achieving efficient absorption and separation of extremely dense oil fumes.
Patent Information
- Application Number
- CN202520690378.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-04-14
AI Technical Summary
Existing range hoods, when dealing with extremely dense cooking fumes, rely on a single smoke extraction path, resulting in poor fume filtration and an inability to effectively capture rapidly diffusing fumes.
Design a three-chamber range hood, including a main air inlet and two secondary air inlets, each equipped with an oil filter and an oil baffle. The range hood draws in cooking fumes through multiple air inlets and separates grease between the oil filter and the oil baffle, achieving large-area suction and oil fume separation.
It improves the absorption effect of ultra-large and dense oil fumes, and achieves effective separation of oil fumes. The grease accumulates on the oil filter screen and oil baffle plate, and the smoke enters the main smoke collection chamber from the secondary smoke collection chamber and is then discharged, achieving a good oil fume separation effect.
Smart Images
Figure CN223976112U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of range hood technology, and more specifically to a three-chamber range hood. Background Technology
[0002] A range hood is a type of kitchen appliance that primarily extracts cooking fumes. Grease adheres to the grease filter in the range hood, accumulates, and drips into the grease cup. The grease is then separated, and the filtered fumes are released into the air.
[0003] The well-known smoke extraction path of a range hood is through the central air intake mesh to the impeller in the volute, where the smoke is then ejected into the exhaust pipe to achieve the smoke extraction effect. The structural components through which the smoke passes are the air intake mesh, the volute, the impeller, and the air outlet. However, for the extremely large amount of dense smoke generated during cooking, which diffuses rapidly, a single air intake cannot quickly capture the rapidly spreading smoke, resulting in a poor smoke filtration effect. Utility Model Content
[0004] In view of this, the present invention provides a three-chamber range hood.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a three-chamber range hood, comprising: a smoke collection hood, wherein the first side plate of the smoke collection hood is provided with a main air inlet and two auxiliary air inlets, the two auxiliary air inlets are provided on both sides of the main air inlet, a main smoke collection chamber and an auxiliary smoke collection chamber are formed inside the smoke collection hood, the main smoke collection chamber corresponds to the main air inlet, each auxiliary smoke collection chamber corresponds to one auxiliary air inlet, and the main smoke collection chamber and the auxiliary smoke collection chamber are connected inside the smoke collection hood;
[0006] An oil filter screen is installed corresponding to the secondary air inlet, and an oil baffle is installed on the rear side of the oil filter screen inside the secondary smoke collection chamber, with a gap between the oil baffle and the oil filter screen.
[0007] This technology uses one main air inlet and two secondary air inlets to draw in cooking fumes, resulting in a wider smoke extraction area and better extraction of the large amounts of dense cooking fumes generated during cooking. The fumes enter through the secondary air inlets, impacting the oil filter and passing through the filter's holes before striking the oil baffle. Grease accumulates on the oil filter and the oil baffle, while the smoke enters the main smoke extraction chamber from the secondary smoke collection chamber and is finally expelled from the exhaust vent of the three-chamber range hood. This achieves large-area smoke extraction and excellent oil and smoke separation.
[0008] As a preferred embodiment of this utility model, the oil filter screen forms a first support portion, which is supported on the inner surface of the smoke collection hood; the oil filter screen has multiple filter holes; this technology specifically defines the assembly position of the oil filter screen.
[0009] As a preferred embodiment of this utility model, the oil filter screen covers the secondary air inlet; in this technology, the oil filter screen is directly installed at the secondary air inlet.
[0010] As a preferred embodiment of this utility model, the oil filter screen is recessed from the secondary air inlet into the secondary smoke collection chamber, and the projection of the oil filter screen covers the secondary air inlet in the direction perpendicular to the secondary air inlet; in this technology, the oil filter screen is recessed inward corresponding to the secondary air inlet, which can also achieve the effect of separating grease.
[0011] As a preferred embodiment of this utility model, the oil filter screen is bent outward along the first support portion to form a second support portion, and the oil baffle plate abuts against the second support portion.
[0012] As a preferred embodiment of this utility model, the edge of the oil baffle is formed with a first mounting edge, and the oil baffle is fixed inside the smoke collection hood through the first mounting edge. Specifically, this technology limits the oil baffle to be installed inside the smoke collection hood through the first mounting edge, which is a simple and stable installation method.
[0013] As a preferred embodiment of this utility model, the smoke hood has a second side plate, the first side plate and the second side plate are positioned opposite each other, and the second side plate protrudes from the first side plate to form the oil baffle plate; in this technology, another method is adopted, in which the oil baffle plate is integrally formed on the second side plate, which makes the structure simpler and reduces assembly steps.
[0014] As a preferred embodiment of this utility model, it further includes: a housing and a wind system. The housing is installed outside the smoke collection hood, and the interior of the housing is connected to the main smoke collection chamber. The wind system is installed inside the housing to draw oil fumes from the main smoke collection chamber and the secondary smoke collection chamber.
[0015] As a preferred embodiment of this utility model, the main air inlet is provided with a double-layer filter screen, which can separate grease from the fumes.
[0016] The remaining beneficial technical effects of this utility model are embodied in the specific embodiments. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of the three-chamber range hood in Example 1;
[0019] Figure 2 This is a partial exploded view of the three-chamber range hood in Example 1;
[0020] Figure 3a This is a cross-sectional view of the three-chamber range hood of Example 1;
[0021] Figure 3b for Figure 3a Enlarged view of point A in the middle;
[0022] Figure 4 This is a cross-sectional view of the three-chamber range hood of Embodiment 1 from another angle;
[0023] Figure 5 This is a schematic diagram of the oil filter screen in the three-chamber range hood of Example 1;
[0024] Figure 6 This is a schematic diagram of the three-chamber range hood in Example 2;
[0025] Figure 7 This is an exploded view of the three-chamber range hood in Example 2;
[0026] Figure 8 This is a cross-sectional view of the three-chamber range hood in Example 2.
[0027] Instruction manual illustrations
[0028] Smoke hood 100; main smoke collection chamber 101; secondary smoke collection chamber 102; first side plate 110; main air inlet 111; secondary air inlet 112; oil filter screen 120; first support part 121; filter screen hole 122; second support part 123; oil baffle plate 130; first mounting edge 131; second side plate 140; housing 200. Detailed Implementation
[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.
[0030] Example 1:
[0031] Please see Figure 1-5 As shown, a three-chamber range hood includes: a smoke collection hood 100, a first side plate 110 of the smoke collection hood 100 having a main air inlet 111 and two secondary air inlets 112, the two secondary air inlets 112 being located on both sides of the main air inlet 111, a main smoke collection chamber 101 and secondary smoke collection chambers 102 being formed within the smoke collection hood 100, the main smoke collection chamber 101 corresponding to the main air inlet 111, and each secondary smoke collection chamber 102 corresponding to one secondary air inlet 112, the main smoke collection chamber 101 and the secondary smoke collection chambers 102 being connected within the smoke collection hood 100; an oil filter screen 120 being installed corresponding to the secondary air inlets 112, and an oil baffle plate 130 being provided behind the oil filter screen 120 within the secondary smoke collection chamber 102, with a gap formed between the oil baffle plate 130 and the oil filter screen 120.
[0032] In this embodiment, the fume hood 100 is provided with a main air inlet 111 and two secondary air inlets 112, which can achieve large-area air intake and improve the fume extraction effect. The fumes are mainly drawn in through the main air inlet 111, and secondly through the two secondary air inlets 112. The fumes drawn in through the secondary air inlets 112 enter the secondary fume collection chamber 102 and are then collected in the main fume collection chamber 101, and finally sent out from the air outlet.
[0033] The fumes enter through the secondary air inlet 112. First, the fumes impact the oil filter 120, then pass through the oil filter 120 and enter the gap D between the oil baffle 130 and the oil filter 120, where they impact the oil baffle 130 again, and finally collect in the main fume collection chamber 101. During this process, the fumes impact the oil filter 120 and then the oil baffle 130, so grease accumulates on the oil filter 120 and the oil baffle 130, resulting in better oil and fume separation.
[0034] like Figure 5 As shown, if the smoke hood is 100... Figure 5 If the gas stove is installed horizontally on the kitchen wall as shown in the orientation, then the gas stove should be directly below the fume hood 100. Figure 5 Both the middle oil filter 120 and the oil baffle 130 are inclined downwards from left to right. Therefore, the grease accumulated on the oil filter 120 and the oil baffle 130 will flow downwards to the right and collect in the oil collection cup.
[0035] Furthermore, the oil filter 120 forms a first support portion 121, which is supported on the inner surface of the smoke collection hood 100; the oil filter 120 has a plurality of filter holes 122.
[0036] Specifically, such as Figure 3a and Figure 4 As shown, the first support part 121 of the oil filter screen 120 is supported on the inner surface of the fume hood 100 and close to the secondary air inlet 112, which can ensure that the oil fumes in the secondary fume collection chamber 102 are filtered by the oil filter screen 120.
[0037] The oil filter screen 120 has multiple filter holes 122 evenly arranged at its location.
[0038] Furthermore, the oil filter 120 covers the secondary air inlet, that is, the oil filter 120 can be a flat mesh structure, directly installed in the secondary air inlet 112.
[0039] Furthermore, such as Figure 5 As shown, the oil filter 120 can also be recessed from the secondary air inlet 112 into the secondary smoke collection chamber 102. In this case, the first support 121 is also supported on the inner surface of the smoke collection hood 100, and the smoke collection hood 100 is entirely covered by the secondary air inlet 112. Figure 4As shown, the projection of the oil filter screen 120 covers the secondary air inlet 112 in a direction perpendicular to the secondary air inlet 112.
[0040] Furthermore, the oil filter screen 120 extends outward along the first support portion 121 to form a second support portion 123, and the oil baffle 130 abuts against the second support portion 123;
[0041] Specifically, such as Figure 5 As shown, in the X1 and X2 directions, the oil baffle 130 is provided with a first support portion 121 on both sides. The first support portion 121 is first bent vertically and then bent horizontally outward to form a second support portion 123. The oil baffle 130 can be pressed against the second support portion 123.
[0042] Furthermore, the edge of the oil baffle 130 is formed with a first mounting edge 131, and the oil baffle 130 is fixed inside the smoke collection hood 100 through the first mounting edge 131.
[0043] like Figure 3b As shown, the first mounting edge 131 is supported on the sheet metal part inside the smoke hood 100 and locked with screws to complete the installation of the oil baffle 130.
[0044] like Figure 1 As shown, the three-chamber dual-filter range hood also has a housing 200 and a fan system. The housing 200 is installed outside the smoke collection hood 100, and the interior of the housing 200 is connected to the main smoke collection chamber 101. The fan system is installed inside the housing 200. The fan system includes a volute and an impeller. When the impeller is driven, it draws air. The fumes enter the main smoke collection chamber 101 from the main air inlet 111 and are drawn into the volute, and finally discharged from the air outlet of the housing 200. The fumes also enter the secondary smoke collection chamber 102 from the secondary air inlet 112, and then are drawn into the volute through the main smoke collection chamber 101, and finally discharged from the air outlet of the housing 200.
[0045] Furthermore, the main air inlet 111 is equipped with a double-layer filter screen to further and more effectively separate the oil and smoke entering from the main air inlet 111.
[0046] Example 2:
[0047] The difference between Example 2 and Example 1 is that in Example 1, the oil baffle 130 is installed inside the secondary smoke collection chamber 102, while in Example 2, the oil baffle 130 is integrally formed on the second side plate 140.
[0048] like Figure 6-8 As shown, the smoke hood 100 has a second side plate 140, the first side plate 110 and the second side plate 140 are positioned opposite each other, and the oil baffle 130 is formed by protruding from the second side plate 140 toward the first side plate 110.
[0049] Generally speaking, the smoke hood 100 is made of metal, and the second side plate 140 is also made of metal. So, while making the second side plate 140, an oil baffle 130 is pressed and formed on the second side plate 140.
[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A three-chamber extractor hood, comprising: The fume hood (100) is characterized in that: a main fume collecting cavity (101) and a sub fume collecting cavity (102) are formed in the fume hood (100), the main fume collecting cavity (101) corresponds to the main air inlet (111), each sub fume collecting cavity (102) corresponds to a sub air inlet (112), and the main fume collecting cavity (101) and the sub fume collecting cavity (102) are communicated in the fume hood (100). An oil filter screen (120) is installed corresponding to the sub air inlet (112), an oil baffle (130) is arranged at the rear side of the oil filter screen (120) in the sub fume collecting cavity (102), and a gap D is formed between the oil baffle (130) and the oil filter screen (120).
2. A three-chamber extractor hood according to claim 1, characterized in that: The oil filter screen (120) forms a first support part (121) which is supported on the inner surface of the fume hood (100); and the oil filter screen (120) is distributed with a plurality of filter screen holes (122).
3. A three-chamber extractor hood according to claim 2, characterized in that: The oil filter screen (120) covers the sub air inlet.
4. A three-chamber extractor hood according to claim 2, characterized in that: The oil filter screen (120) is concave from the sub air inlet (112) to the inside of the sub fume collecting cavity (102), and the projection of the oil filter screen (120) in the direction perpendicular to the sub air inlet (112) covers the sub air inlet (112).
5. A three-chamber extractor hood according to claim 4, characterized in that: The oil filter screen (120) is bent and extended outward along the first support part (121) to form a second support part (123), and the oil baffle (130) abuts against the second support part (123).
6. A three-chamber extractor hood according to claim 5, characterized in that: An edge of the oil baffle (130) forms a first mounting edge (131), and the oil baffle (130) is fixed in the fume hood (100) through the first mounting edge (131).
7. A triple cavity extractor hood according to any one of claims 1-4, characterized in that: The fume hood (100) has a second side plate (140), the first side plate (110) and the second side plate (140) are opposite to each other, and the second side plate (140) is protruded in the direction of the first side plate (110) to form the oil baffle (130).
8. A three chamber extractor hood as claimed in claim 1, characterized in that: Further comprising: A housing (200) and a wind power system, the housing (200) is installed outside the fume hood (100), the inside of the housing (200) is communicated with the main fume collecting cavity (101), and the wind power system is installed in the housing (200) to suck the oil fume in the main fume collecting cavity (101) and the sub fume collecting cavity (102).
9. The triple cavity extractor hood according to claim 1, characterized in that: The main air inlet (111) is provided with a double-layer filter screen.