Range hood

Abstract

The present invention relates to the technical field of range hood fume extraction equipment, and more specifically, to a range hood. The range hood comprises a fume hood, a deflector, and two oil screens. The deflector and the two oil screens each cover the fume inlet of the fume hood, the deflector being positioned between the two oil screens. The two oil screens and the deflector form a first fume collection trough with a downward opening. The range hood provided by the present invention has a low fume flow rate near the fume inlet of the fume hood, preventing fume from escaping and providing excellent fume extraction.

Description

Technical Field

[0001] The present invention relates to the technical field of range hood equipment, and in particular to a range hood. Background Art

[0002] At present, range hoods are installed in many cooking places to improve the cooking environment and enhance the cook's experience.

[0003] However, when the existing range hoods (such as ceiling-type range hoods) are working, the oil smoke flow rate near the smoke inlet of the smoke collection hood is relatively high, so there is a serious smoke leakage problem and the oil smoke extraction effect is poor.

[0004] In summary, how to overcome the above-mentioned defects of existing range hoods is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] The object of the present invention is to provide a range hood to alleviate the technical problem of poor oil fume extraction effect existing in the range hoods in the prior art.

[0006] The range hood provided by the present invention comprises a fume collecting hood, a guide plate and two oil nets.

[0007] The guide plate and the two oil nets both cover the smoke inlet of the smoke collecting hood. The guide plate is located between the two oil nets, and the two oil nets and the guide plate form a first smoke collecting trough with the opening facing downward.

[0008] Preferably, as an implementable embodiment, the bottom of the volute of the range hood is detachably connected to the outer shell of the range hood; a positioning hole is provided on the top plate of the outer shell, and the top air outlet of the volute is fixedly connected with a flange fixing ring, and the flange fixing ring can be snapped into the positioning hole.

[0009] Preferably, as an implementable embodiment, the volute can be taken out from the smoke inlet of the smoke collecting hood.

[0010] Preferably, as an implementable embodiment, a sealing ring is fixedly connected to the flange fixing ring, and the sealing ring is used to abut and seal with the positioning hole.

[0011] Preferably, as an implementable embodiment, a first support frame is fixedly connected to the outer shell, a second support frame is fixedly connected to the bottom of the volute, and the first support frame is threadedly connected to the second support frame through a threaded connector.

[0012] Preferably, as an implementation method, a rotating shaft, a check valve plate and a limit member are installed inside the flange fixing ring, the two ends of the rotating shaft are respectively fixedly connected to the side walls of the flange fixing ring, the check valve plate rotates with the rotating shaft, the limit member is fixedly connected to the rotating shaft, and the limit member is used to limit the check valve plate above the rotating shaft.

[0013] Preferably, as an implementable embodiment, the height of the first smoke collecting groove is greater than 10 mm.

[0014] Preferably, as an implementable embodiment, the oil net has a first portion and a second portion, the first portion is arranged opposite to the smoke inlet of the smoke hood, and the second portion is arranged opposite to the top surface of the smoke collecting cavity of the smoke hood.

[0015] The first parts of the two oil nets and the guide plate form the first smoke collecting trough, and the second parts of the two oil nets and the top surface of the smoke collecting cavity form a second smoke collecting trough with an opening toward the smoke inlet of the smoke collecting hood.

[0016] Preferably, as an implementable embodiment, an oil cup is installed at the bottom of the rear end of the smoke hood.

[0017] The oil net is tilted downward from front to back, and the oil can flow into the oil cup along the oil net; and / or the guide plate is tilted downward from front to back, and the oil can flow into the oil cup along the guide plate.

[0018] Preferably, as an implementable embodiment, the oil net and the guide plate are both detachably connected to the fume hood.

[0019] The beneficial effects of the present invention are:

[0020] In the range hood provided by the present invention, a deflector and two oil screens are positioned over the smoke inlet of the fume hood. The deflector is positioned between the two oil screens, and the two oil screens and the deflector form a first, downwardly opening smoke collecting trough. When oil smoke enters the smoke collection chamber of the fume hood, some oil pressure flows into the first smoke collecting trough and then along the deflector into the oil screens. Some oil smoke also flows directly into the oil screens. Fumes filtered by the oil screens are then drawn into the smoke inlet of the fume hood.

[0021] It should be noted that the oil smoke in the first smoke collecting trough will be slowed down by the blocking effect of the guide plate and the oil nets on both sides, thereby reducing the oil smoke flow rate near the smoke inlet of the smoke hood, alleviating the problem of oil smoke escape, and further improving the oil smoke suction effect of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a range hood provided by an embodiment of the present invention;

[0024] Figure 2 An exploded view of a range hood provided by an embodiment of the present invention;

[0025] Figure 3 A schematic cross-sectional view of a range hood provided in an embodiment of the present invention;

[0026] Figure 4 for Figure 3 Enlarged view of part A;

[0027] Figure 5 A schematic diagram of the partial structure of a range hood provided in an embodiment of the present invention.

[0028] icon:

[0029] 100-fume hood;

[0030] 200-deflector;

[0031] 300-Oil Net;

[0032] 400-first smoke collecting trough;

[0033] 500-oil cup;

[0034] 600-housing; 610-top plate; 620-back plate; 630-first support frame;

[0035] 700-volute; 710-flange fixing ring; 720-second support frame; 730-check valve plate; 800-sealing ring. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "lower," "vertical," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0039] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0040] See also Figure 1-Figure 3 This embodiment provides a range hood comprising a fume hood 100, a deflector plate 200, and two oil screens 300. The deflector plate 200 and the two oil screens 300 both cover the fume inlet of the fume hood 100. The deflector plate 200 is positioned between the two oil screens 300. The two oil screens 300 and the deflector plate 200 form a first fume collecting trough 400 with a downward opening. After oil fume enters the fume collecting chamber of the fume hood 100, some oil pressure flows into the first fume collecting trough 400 and then flows along the deflector plate 200 into the oil screens 300. Some oil fume also flows directly into the oil screens 300. The oil fume filtered by the oil screens 300 is then drawn into the fume inlet of the fume hood 100.

[0041] It should be noted that the oil smoke in the first smoke collecting trough 400 will be slowed down by the blocking effect of the guide plate 200 and the oil nets 300 on both sides, thereby reducing the oil smoke flow rate near the smoke inlet of the smoke hood 100, alleviating the problem of oil smoke escape, and further improving the oil smoke extraction effect of the range hood.

[0042] See also Figure 3-Figure 5 On the basis that the oil net 300 and the guide plate 200 are detachably connected to the smoke hood 100, the bottom of the volute 700 of the range hood can be connected to the smoke hood 100 in a detachable manner. At the same time, a positioning hole is opened on the top plate 610 of the outer shell 600 of the range hood, and a flange fixing ring 710 is fixedly connected to the top air outlet of the volute 700, and the flange fixing ring 710 can be stuck in the positioning hole of the top plate 610.

[0043] Preferably, see Figure 4 The sealing ring 800 can be fixedly connected to the flange fixing ring 710 on the top of the volute 700, and the sealing ring 800 can be abutted and sealed against the positioning hole on the top plate 610 of the outer shell 600.

[0044] It should be noted that installing the sealing ring 800 can bring at least the following three advantages:

[0045] First, the positioning effect of the positioning holes on the top plate 610 on the flange fixing ring 710 on the top of the volute 700 can be improved, thereby alleviating the problem of the flange fixing ring 710 shaking in the positioning holes on the top plate 610 .

[0046] Second, it can prevent oil from dripping from the gap between the flange fixing ring 710 and the positioning hole on the top plate.

[0047] Third, the sealing ring 800 can play a shock-absorbing role, thereby reducing the vibration energy transmitted from the motor in the volute 700 to the range hood housing 600 and reducing noise.

[0048] Specifically, a flange folded outward is provided at the bottom of the flange fixing ring 710, and the sealing ring 800 is provided as an annular structure with an L-shaped cross section, that is, the sealing ring 800 has an edge extending along the transverse direction and an edge extending along the longitudinal direction, wherein the edge extending along the transverse direction of the sealing ring 800 can be clamped between the flange of the flange fixing ring 710 and the top plate 610, and the edge extending along the longitudinal direction of the sealing ring 800 can be clamped between the flange fixing ring 710 and the positioning hole. In this way, not only can the positioning effect of the top plate 610 of the outer casing 600 on the volute 700 be improved, but also the structural strength of the fitting point between the flange fixing ring 710 and the positioning hole can be improved.

[0049] In particular, the sealing ring 800 can be made of rubber material.

[0050] See also Figure 3 and Figure 5 , a first support frame 630 is fixedly connected to the outer shell 600, and a second support frame 720 is fixedly connected to the bottom of the volute 700, and the first support frame 630 is threadedly connected to the second support frame 720 through a threaded connector.

[0051] It should be noted that the addition of a first support frame 630 and a second support frame 720 in the range hood facilitates the detachable connection between the volute 700 and the outer casing 600; in addition, the first support member and the second support member are fastened together using threaded connectors, which not only ensures the firmness of the connection between the first support member and the second support member, but also facilitates disassembly.

[0052] Specifically, since the first support frame 630 and the outer shell 600 do not need to be detached, the first support frame 630 and the outer shell 600 can be fixed together by welding, thereby improving the structural strength of the connection between the first support frame 630 and the outer shell 600; similarly, since the second support frame 720 and the volute 700 do not need to be detached, the second support frame 720 and the volute 700 can be fixed together by welding, thereby improving the structural strength of the connection between the second support frame 720 and the volute 700.

[0053] In particular, the first support frame 630 can be fixed to the back plate 620 of the housing 600 to facilitate the removal of the threaded connection from the front.

[0054] See also Figure 3 and Figure 4 In the specific structure of the range hood provided in this embodiment, a rotating shaft, a check valve plate 730 and a limit member can be installed inside the flange fixing ring 710, and the two ends of the rotating shaft are respectively fixedly connected to the side walls of the flange fixing ring 710, and the check valve plate 730 is rotatably matched with the rotating shaft, so that the check valve plate 730 can rotate around the rotating shaft; at the same time, the limit member is fixedly connected to the rotating shaft, and the check valve plate 730 is restricted above the rotating shaft by the limit member to prevent the check valve plate 730 from rotating in the opposite direction. Under the premise of realizing the function of the check valve, the structure of the check valve is simplified and the cost can be reduced.

[0055] The height of the first smoke collecting groove 400 (ie, the height difference between the bottom surface of the oil net 300 and the bottom surface of the guide plate 200 ) is set to be greater than 10 mm, so that a better deceleration effect can be obtained.

[0056] Preferably, the height of the first smoke collecting groove 400 is set to 25 mm.

[0057] The second smoke collecting groove 400 is a kind of oil collecting groove which is provided on the upper surface of the smoke collecting chamber and has a plurality of oil nets 300 and a plurality of oil nets 300 connected to the upper surface of the smoke collecting chamber.

[0058] See also Figure 3An oil cup 500 is installed at the rear end bottom of the smoke collecting hood 100 to receive the oil liquid formed by the condensation of the smoke.

[0059] The oil net 300 can be tilted downward from front to back, and the oil on the oil net 300 (including the oil formed by condensation of oil smoke on the oil net 300 and the oil dripping from other components onto the oil net 300) can flow into the oil cup 500 along the oil net 300 under the action of its own gravity, thereby reducing the risk of oil on the oil net 300 dripping onto the stove.

[0060] Specifically, the tilt angle of the oil screen 300 may be set to 10°.

[0061] The guide plate 200 can be tilted downward from front to back, and the oil on the guide plate 200 (including the oil formed by the condensation of oil smoke on the guide plate 200 and the oil dripping from other components onto the guide plate 200) can flow into the oil cup 500 along the guide plate 200 under the action of its own gravity, thereby reducing the risk of the oil on the guide plate 200 dripping onto the stove.

[0062] Specifically, the inclination angle of the guide plate 200 may be set to 10°.

[0063] Preferably, the oil net 300 and the guide plate 200 can be connected to the smoke hood 100 in a detachable connection manner, so that when the oil net 300 and the guide plate 200 need to be cleaned, the oil net 300 and the guide plate 200 can be removed from the smoke hood 100 for cleaning, which can reduce the difficulty of cleaning and improve the cleaning effect; in addition, when the oil net 300 or the guide plate 200 needs to be replaced, they can be disassembled and assembled smoothly.

[0064] Specifically, the oil net 300 and the smoke hood 100 can be detachably connected by means of connectors such as threaded connectors, magnets or snap connectors, preferably snap connectors to improve the convenience of disassembly; one end of the guide plate 200 is connected to the smoke hood 100 by a pin, and the other end of the guide plate 200 is connected to the smoke hood 100 by a threaded connector. When disassembling, it is only necessary to unscrew the threaded connector and then pull the other end of the guide plate 200 directly out of the smoke hood 100 to achieve disassembly of the guide plate 200, which is very convenient.

[0065] When it is necessary to disassemble the volute 700, the oil net 300 and the guide plate 200 can be removed from the smoke hood 100 first, so that the smoke inlet of the smoke hood 100 is open, and then the bottom of the volute 700 is detached from the outer casing 600 of the range hood. After that, the volute 700 can be directly pulled downward in the vertical direction, and the flange fixing ring 710 can be separated from the positioning ring, so that the volute 700 can be removed from the outer casing 600 of the range hood. Finally, the volute 700 can be directly pulled out from the smoke inlet of the smoke hood 100 to achieve the disassembly of the volute 700 without removing the entire range hood, thereby improving the convenience of disassembling the volute 700.

[0066] In addition, see Figure 3 In the range hood provided by this embodiment, the bottom of the volute 700 can penetrate into the interior of the smoke collecting hood 100. In this way, the height difference between the volute 700 and the smoke inlet of the smoke collecting chamber can be reduced, thereby shortening the flow path length of the oil smoke. This not only reduces energy loss and improves the oil smoke extraction effect, but also reduces the volume of the entire range hood and the material consumption, saving space and cost.

[0067] In summary, the present invention discloses a range hood that overcomes many technical drawbacks of conventional range hoods. The range hood provided in this embodiment has a low oil fume flow rate near the smoke inlet of the smoke hood 100, which prevents oil fume from escaping easily and provides a better oil fume extraction effect.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A range hood, characterized in that: It includes a smoke collecting hood (100), a guide plate (200) and two oil screens (300); The guide plate (200) and the two oil nets (300) both cover the smoke inlet of the smoke collecting hood (100), the guide plate (200) is located between the two oil nets (300), and the two oil nets (300) and the guide plate (200) form a first smoke collecting trough (400) with an opening facing downward.

2. The range hood according to claim 1, characterized in that: The bottom of the volute (700) of the range hood is detachably connected to the outer shell (600) of the range hood; a positioning hole is provided on the top plate (610) of the outer shell (600); a flange fixing ring (710) is fixedly connected to the top air outlet of the volute (700), and the flange fixing ring (710) can be snapped into the positioning hole.

3. The range hood according to claim 2, characterized in that: The volute (700) can be taken out from the smoke inlet of the smoke collecting hood (100).

4. The range hood according to claim 2, characterized in that: A sealing ring (800) is fixedly connected to the flange fixing ring (710), and the sealing ring (800) is used to abut against and seal the positioning hole.

5. The range hood according to claim 2, characterized in that: A first support frame (630) is fixedly connected to the outer shell (600), a second support frame (720) is fixedly connected to the bottom of the volute (700), and the first support frame (630) is threadedly connected to the second support frame (720) via a threaded connection.

6. The range hood according to claim 2, characterized in that: A rotating shaft, a check valve disc (730) and a limiting member are installed inside the flange fixing ring (710), the two ends of the rotating shaft are respectively fixedly connected to the side walls of the flange fixing ring (710), the check valve disc (730) is rotatably matched with the rotating shaft, the limiting member is fixedly connected to the rotating shaft, and the limiting member is used to limit the check valve disc (730) above the rotating shaft.

7. The range hood according to any one of claims 1 to 3, characterized in that: The height of the first smoke collecting groove (400) is greater than 10 mm.

8. The range hood according to any one of claims 1 to 3, characterized in that: The oil net (300) comprises a first portion and a second portion, the first portion being arranged opposite to the smoke inlet of the smoke collecting hood (100), and the second portion being arranged opposite to the top surface of the smoke collecting cavity of the smoke collecting hood (100); The first parts of the two oil nets (300) and the guide plate (200) form the first smoke collecting groove (400), and the second parts of the two oil nets (300) and the top surface of the smoke collecting chamber form a second smoke collecting groove with an opening toward the smoke inlet of the smoke collecting hood (100).

9. The range hood according to any one of claims 1 to 3, characterized in that: An oil cup (500) is installed at the rear end bottom of the smoke collecting hood (100); The oil net (300) is tilted downward from front to back, and oil can flow into the oil cup (500) along the oil net (300); and / or the guide plate (200) is tilted downward from front to back, and oil can flow into the oil cup (500) along the guide plate (200).

10. The range hood according to any one of claims 1 to 6, characterized in that: The oil net (300) and the guide plate (200) are both detachably connected to the fume hood (100).

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