Air intake device and range hood

Abstract

The present invention provides an air intake device and a range hood, and relates to the technical field of kitchen appliances. The air intake device includes a smoke hood and a pressure diffuser; an air inlet is provided at the bottom of the smoke hood, and a first extension portion extending toward the inside of the smoke hood is provided on the edge of the air inlet, and the first extension portion is bent toward the top of the smoke hood; the pressure diffuser is arranged in the smoke hood, and a second extension portion is provided on the edge of the pressure diffuser that is bent toward the bottom of the smoke hood; a first flow channel is formed between the first extension portion and the second extension portion, and the first flow channel is connected to the air outlet of the smoke hood. The first extension portion causes the smoke hood to form an inner concave structure, and the second extension portion causes the pressure diffuser to form a concave structure. The inner concave structure can effectively reduce the diffusion speed of oil smoke, gather the oil smoke in the middle area of ​​the smoke hood, and then flow to the edge area, and then enter the first flow channel, which can help the smoke hood to gather the oil smoke, reduce the probability of oil smoke escaping from the edge area of ​​the smoke hood, and improve the smoke extraction effect of the range hood.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to an air inlet device and a range hood. Background Art

[0002] Range hoods have become one of the essential kitchen appliances for modern families. The oil smoke in the kitchen is discharged to the outside through the range hood, keeping the air in the kitchen clean.

[0003] In the prior art, the air inlet of the range hood is usually arranged at the center of the range hood, and the fan providing negative pressure is also arranged at the center of the range hood.

[0004] Such a setting will cause a large negative pressure in the center area of ​​the range hood and a small negative pressure in the edge area. Therefore, the oil fume generated during cooking cannot be completely sucked away by the range hood, which can easily cause the oil fume to escape from the edge of the smoke hood, resulting in poor smoke extraction effect of the range hood. Summary of the invention

[0005] The object of the present invention is to provide an air inlet device to solve the technical problem of poor smoke extraction effect of range hoods in the prior art.

[0006] The air inlet device provided by the present invention comprises a smoke collecting hood and a pressure diffuser plate;

[0007] An air inlet is provided at the bottom of the smoke collecting hood, and a first extension portion extending toward the inside of the smoke collecting hood is provided on the edge of the air inlet, and the first extension portion is bent toward the top of the smoke collecting hood;

[0008] The pressure diffuser plate is arranged in the smoke collecting hood, and the edge of the pressure diffuser plate has a second extension portion bent toward the bottom of the smoke collecting hood;

[0009] A first flow channel is formed between the first extension portion and the second extension portion, and the first flow channel is communicated with the air outlet of the smoke collecting hood.

[0010] Further, a cover is provided on the first extension portion;

[0011] A second flow channel is formed between the second extension portion and the inner wall of the smoke collecting hood, and the first flow channel, the second flow channel and the air outlet of the smoke collecting hood are connected in sequence.

[0012] Further, an edge of the second extending portion is located below an edge of the first extending portion.

[0013] Furthermore, a vertical distance between an edge of the first extending portion and an edge of the second extending portion is greater than or equal to 5 mm.

[0014] Furthermore, the cross-sectional area of ​​the first flow channel is S1; the cross-sectional area of ​​the second flow channel is S2; both S1 and S2 are larger than the cross-sectional area of ​​the air outlet of the fan assembly of the range hood.

[0015] Furthermore, a closing piece is provided between the rear end of the pressure diffuser plate and the inner side wall of the smoke collecting hood; the closing piece can close the air inlet located at the rear side of the pressure diffuser plate.

[0016] Furthermore, a flange structure is provided on one end of the closing member away from the pressure diffuser plate, and the flange structure is fixedly connected to the inner side wall of the smoke collecting hood.

[0017] Furthermore, a connecting piece is provided at the front end of the diffuser plate, and the connecting piece is fixedly connected to the smoke collecting hood.

[0018] Furthermore, the angle between the bottom surface of the front end of the smoke hood and the horizontal plane is a, and a is 10°-25°;

[0019] and / or;

[0020] The included angle between the top surface of the pressure diffuser plate and the horizontal plane is b, and b is 10°-25°.

[0021] Furthermore, the first extension portion and the second extension portion are both arc-shaped structures;

[0022] and / or;

[0023] The edge of the first extension portion is a dead edge structure;

[0024] and / or;

[0025] The edge of the second extension portion is a pressed edge structure.

[0026] Furthermore, the smoke hood comprises a smoke hood body, a cover plate, a connecting plate, a rear plate and an oil cup hanging foot.

[0027] In the vertical direction, the smoke hood body, the diffuser plate, the connecting plate and the cover plate are arranged in sequence from bottom to top; the rear plate is arranged at the rear end of the smoke hood body; and the oil cup hanging foot is arranged at the bottom end of the smoke hood body.

[0028] Another object of the present invention is to provide a range hood, comprising the air inlet device provided by the present invention.

[0029] The air inlet device provided by the present invention includes a smoke hood and a pressure diffuser; the bottom of the smoke hood is provided with an air inlet, the edge of the air inlet has a first extension portion extending toward the inside of the smoke hood, and the first extension portion is bent toward the top of the smoke hood; the pressure diffuser is arranged in the smoke hood, and the edge of the pressure diffuser has a second extension portion bent toward the bottom of the smoke hood; a first flow channel is formed between the first extension portion and the second extension portion, and the first flow channel is connected to the air outlet of the smoke hood. The first extension portion makes the smoke hood form an inner concave structure, and the second extension portion makes the pressure diffuser form a concave structure. The inner concave structure can effectively reduce the diffusion speed of oil smoke, gather the oil smoke in the middle area of ​​the smoke hood, and then flow to the edge area, and then enter the first flow channel, which can help the smoke hood to gather the oil smoke, reduce the probability of oil smoke escaping from the edge area of ​​the smoke hood, and improve the smoke extraction effect of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 is an exploded view of a smoke collecting hood in an air intake device provided by an embodiment of the present invention;

[0032] Figure 2 is a side view of a smoke collecting hood in an air inlet device provided by an embodiment of the present invention;

[0033] Figure 3 It is a structural schematic diagram of a smoke collecting hood body in an air inlet device provided by an embodiment of the present invention;

[0034] Figure 4 is a side view of a smoke collecting hood body in an air inlet device provided by an embodiment of the present invention;

[0035] Figure 5 yes Figure 4 A partial enlarged view of

[0036] Figure 6 is a schematic structural diagram of a pressure diffuser plate in an air inlet device provided in an embodiment of the present invention;

[0037] Figure 7 is a front view of a pressure diffuser plate in an air inlet device provided by an embodiment of the present invention;

[0038] Figure 8 is a side view of a pressure diffuser plate in an air inlet device provided by an embodiment of the present invention;

[0039] Fig. 9 is a schematic diagram of an air inlet device provided by an embodiment of the present invention;

[0040] Fig.10 is a bottom view of an air inlet device provided by an embodiment of the present invention;

[0041] Fig.11 is a schematic structural diagram of a range hood provided by an embodiment of the present invention;

[0042] Fig.12 It is a structural schematic diagram of a cabinet assembly in a range hood provided by an embodiment of the present invention.

[0043] Icons: 1-box assembly; 2-smoke hood; 21-cover plate; 22-connecting plate; 23-diffuser plate; 231-top surface; 232-closure; 233-flange structure; 234-bracket; 235-second extension; 24-smoke hood body; 241-first extension; 242-U-shaped air inlet; 25-rear plate; 26-oil cup hanging foot; 3-oil cup; 4-dead edge structure. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be described in a clear and initial state in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] The present invention provides an air intake device and a range hood. A plurality of embodiments are given below to describe the air intake device and the range hood provided by the present invention in detail.

[0046] Example 1

[0047] The air inlet device provided in this embodiment is as follows: Figures 1 to 12 As shown, it includes a smoke hood 2 and a diffuser plate 23; an air inlet is provided at the bottom of the smoke hood 2, and a first extension portion 241 extending toward the inside of the smoke hood 2 is provided on the edge of the air inlet, and the first extension portion 241 is bent toward the top of the smoke hood 2; the diffuser plate 23 is arranged in the smoke hood 2, and a second extension portion 235 bent toward the bottom of the smoke hood 2 is provided on the edge of the diffuser plate 23; a first flow channel is formed between the first extension portion 241 and the second extension portion 235, and the first flow channel is connected to the air outlet of the smoke hood 2.

[0048] The first extension portion 241 forms a concave structure for the smoke hood 2, and the second extension portion 235 forms a concave structure for the diffuser plate 23. The concave structure can effectively reduce the diffusion speed of oil smoke, gather the oil smoke in the middle area of ​​the smoke hood 2, and then flow to the edge area, and then enter the first flow channel, which can help the smoke hood 2 to gather the oil smoke, reduce the probability of oil smoke escaping from the edge area of ​​the smoke hood 2, and improve the smoke extraction effect of the range hood.

[0049] In addition, the first flow channel is located at the edge area of ​​the fume hood 2, which can make the negative pressure at the edge of the fume hood 2 greater than the negative pressure in the middle area of ​​the fume hood 2, thereby further reducing the probability of oil smoke escaping from the edge area of ​​the fume hood 2.

[0050] Furthermore, the second extension hood is arranged on the first extension part 241; a second flow channel is formed between the second extension part 235 and the inner wall of the smoke collecting hood 2, and the first flow channel, the second flow channel and the air outlet of the smoke collecting hood 2 are connected in sequence.

[0051] Specifically, the outer edge length of the first extension portion 241 is L1, and the outer edge width is W1; the outer wall length of the smoke hood 2 is L2, and the outer wall width is W2; the outer edge length of the diffuser plate 23 is L3, and the outer edge width is W3; L1<L3<L2 and W1<W3<W2, so that the air inlet can form an invisible air inlet, the oil net can be eliminated, and the problem of the oil net being difficult to clean is solved.

[0052] The oil smoke finally flows out from the air outlet of the smoke collecting hood 2 via the first flow channel and the second flow channel.

[0053] Further, the edge of the second extending portion 235 is located below the edge of the first extending portion 241 .

[0054] Such an arrangement can make the first flow channel form an invisible flow channel, making the air inlet invisible from the outside, and at the same time, the oil accumulated on the bottom edge of the diffuser plate 23 can drip into the inside of the smoke hood 2, reducing the risk of oil dripping.

[0055] Furthermore, the vertical distance between the edge of the first extension portion 241 and the edge of the second extension portion 235 is greater than or equal to 5 mm, so as to ensure that the second extension portion 235 is fully covered on the first extension portion 241 to form an invisible air inlet and prevent oil from dripping.

[0056] Furthermore, the cross-sectional area of ​​the first flow channel is S1; the cross-sectional area of ​​the second flow channel is S2; both S1 and S2 are larger than the cross-sectional area of ​​the air outlet of the fan assembly of the range hood.

[0057] The above arrangement is to ensure the air performance of the range hood so that the fume hood 2 maintains a good negative pressure.

[0058] Furthermore, a closing member 232 is provided between the rear end of the pressure diffuser plate 23 and the inner side wall of the smoke collecting hood 2 ; the closing member 232 can close the air inlet located at the rear side of the pressure diffuser plate 23 .

[0059] It should be noted that the rear end mentioned in this embodiment is: the end of the range hood used to be fixed to the wall along the width direction of the range hood; the front end mentioned in this embodiment is the end of the range hood used to face the user along the width direction of the range hood.

[0060] The closing piece 232 closes the air inlet on the rear side of the diffuser plate 23, so that the air inlets on the front, left and right sides of the diffuser plate 23 form a U-shaped air inlet 242. This arrangement is beneficial to improving the negative pressure capacity of the first flow channel on the front, left and right sides of the diffuser plate 23, and preventing the escape of oil smoke.

[0061] The closing member 232 may be in a plate shape or a block shape or any other suitable form, as long as the closing member 232 has a surface that can close the air inlet at the rear side of the diffuser plate 23. The surface may be in a plane shape or a curved surface or any other suitable form.

[0062] The diffuser plate 23 may be fixed to the smoke collecting hood 2 via a sealing member 232 , for example, the sealing member 232 and the inner wall of the smoke collecting hood 2 may be fixedly connected via welding or fasteners.

[0063] Preferably, a flange structure 233 is provided on one end of the closing member 232 away from the diffuser plate 23 , and the flange structure 233 is fixedly connected to the inner side wall of the smoke collecting hood 2 .

[0064] The flange structure 233 fits the inner wall of the smoke collecting hood 2, which can expand the contact area between the pressure diffuser plate 23 and the smoke collecting hood 2, so that the pressure diffuser plate 23 and the smoke collecting hood 2 are fixed more firmly.

[0065] Furthermore, a connecting piece is provided at the front end of the diffuser plate 23 , and the connecting piece is fixedly connected to the smoke collecting hood 2 .

[0066] The connecting member may be a bracket 234 , or any suitable structure such as a connecting rod; the connecting member may be fixedly connected to the inner top wall of the smoke hood 2 , or may be fixedly connected to the inner side wall of the smoke hood 2 .

[0067] The connecting piece can also make the front end of the pressure diffuser plate 23 fixedly connected to the smoke collecting hood 2, so as to further improve the degree of fixation between the pressure diffuser plate 23 and the smoke collecting hood 2.

[0068] Furthermore, the angle between the bottom surface of the front end of the smoke hood 2 and the horizontal plane is a, a is 10°-25°, and / or the angle between the top surface 231 of the diffuser plate 23 and the horizontal plane is b, b is 10°-25°.

[0069] In one embodiment, the angle between the bottom surface of the front end of the smoke hood 2 and the horizontal plane is a, and a is 10°-25°. Such a setting can reduce the probability of oil stains on the surface and inside of the smoke hood 2 dripping onto the table.

[0070] In another embodiment, the angle between the top surface 231 of the pressure diffuser 23 and the horizontal plane is b, and b is 10°-25°, which can make the oil flow into the oil cup 3 and prevent the oil from dripping onto the table. Such a setting can reduce the probability of the oil on the surface of the pressure diffuser 23 dripping onto the table.

[0071] In another embodiment, the angle between the bottom surface of the front end of the smoke hood 2 and the horizontal plane is a, a is 10°-25°, and the angle between the top surface 231 of the pressure diffuser 23 and the horizontal plane is b, b is 10°-25°. The probability of oil stains on the surface and inside of the smoke hood 2 dripping onto the table surface can be reduced, and the oil stains flow into the oil cup 3, further preventing the oil stains from dripping onto the table surface.

[0072] Further, the first extension portion 241 and the second extension portion 235 are both arc-shaped structures, and / or the edge of the first extension portion 241 is a pressed dead edge structure 4, and / or the edge of the second extension portion 235 is a pressed dead edge structure 4.

[0073] The first extension portion 241 and the second extension portion 235 are both arc-shaped structures. The shape of the arc-shaped structure is relatively smooth, which can make the shape of the first flow channel smoother, thereby facilitating the passage of airflow. At the same time, it has a guiding effect on the airflow, causing the airflow to flow toward the outlet of the smoke hood 2.

[0074] The edge of the first extension part 241 is a dead edge structure 4. It can prevent the user from hurting his hands when wiping the smoke hood 2. The dead edge structure 4 is that the edge of the first extension part 241 is bent toward the middle of the first extension part 241, and the edge of the first extension part 241 is pressed tightly against the middle of the first extension part 241. The dead edge structure 4 can prevent the user from scratching his hands when touching the edge of the first extension part 241.

[0075] The edge of the second extension part 235 is a dead edge structure 4. The dead edge structure 4 is that the edge of the second extension part 235 is bent toward the middle of the second extension part 235, and the edge of the second extension part 235 is pressed tightly against the middle of the second extension part 235. The dead edge structure 4 can prevent the user from scratching his hand when touching the edge of the second extension part 235.

[0076] The first extension part 241 and the second extension part 235 are both arc-shaped structures, and the edge of the first extension part 241 is a dead edge structure 4, and the edge of the second extension part 235 is a dead edge structure 4. The shape of the arc-shaped structure is relatively smooth, which can make the shape of the first flow channel smoother, thereby facilitating the passage of airflow, and at the same time, it has a drainage effect on the airflow, so that the airflow flows toward the outlet of the smoke hood 2. The dead edge structure 4 can prevent the user from scratching his hands when touching the edges of the first extension part 241 and the second extension part 235.

[0077] Furthermore, the smoke hood 2 includes a smoke hood body 24, a cover plate 21, a connecting plate 22, a rear plate 25 and an oil cup hanging foot 26. Along the vertical direction, the smoke hood body 24, the diffuser plate 23, the connecting plate 22 and the cover plate 21 are arranged in sequence from bottom to top; the rear plate 25 is arranged at the rear end of the smoke hood body 24; the oil cup hanging foot 26 is arranged at the bottom end of the smoke hood body 24, and the oil cup 3 is connected to the smoke hood body 24 through the oil cup hanging foot 26.

[0078] Specifically, a diffuser plate 23 is fixed to the top of the smoke hood body 24 , a connecting plate 22 is fixed to the top of the diffuser plate 23 , a cover plate 21 is fixed to the top of the connecting plate 22 , a rear plate 25 is fixed to the rear end of the smoke hood body 24 , and the rear plate 25 is fixedly connected to the connecting plate 22 .

[0079] The connecting plate 22 is located above the diffuser plate 23 , the flange structure 233 on the closing piece 232 is connected to the rear plate 25 , and the connecting piece on the closing piece 232 is fixedly connected to the connecting plate 22 , so that a second flow channel is formed between the diffuser plate 23 and the connecting plate 22 .

[0080] The air intake device provided in this embodiment has a first extension portion 241 that allows the smoke hood 2 to form a concave structure, and the second extension portion 235 allows the diffuser plate 23 to form a concave structure. The concave structure can effectively reduce the diffusion speed of oil smoke, and gather the oil smoke in the middle area of ​​the smoke hood 2 and then flow to the edge area, and then enter the first flow channel, which can help the smoke hood 2 to gather the oil smoke, reduce the probability of oil smoke escaping from the edge area of ​​the smoke hood 2, and improve the smoke extraction effect of the range hood.

[0081] Example 2

[0082] The range hood provided in this embodiment includes the air inlet device provided in embodiment 1. The first extension portion 241 forms a concave structure in the fume hood 2, and the second extension portion 235 forms a concave structure in the pressure diffuser plate 23. The concave structure can effectively reduce the diffusion speed of oil smoke, collect the oil smoke in the middle area of ​​the fume hood 2, and then flow to the edge area, and then enter the first flow channel, which can help the fume hood 2 to collect the oil smoke, reduce the probability of oil smoke escaping from the edge area of ​​the fume hood 2, and improve the smoke extraction effect of the range hood.

[0083] Specifically, the range hood further comprises a box assembly 1 and an oil cup 3 . The fume hood 2 is connected to the box assembly 1 , and the oil cup 3 is installed at the lower end of the fume hood 2 .

[0084] The box assembly 1 comprises a box and an air duct assembly. The air duct assembly is fixed in the box and provides power for the range hood to generate negative pressure.

[0085] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by 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. An air inlet device, It is characterized in that It comprises a smoke collecting hood (2) and a pressure diffuser plate (23); An air inlet is provided at the bottom of the smoke collecting hood (2), and a first extension portion (241) extending toward the inside of the smoke collecting hood (2) is provided on the edge of the air inlet, and the first extension portion (241) is bent toward the top of the smoke collecting hood (2); The pressure diffuser plate (23) is arranged in the smoke collecting hood (2), and the edge of the pressure diffuser plate (23) has a second extension portion (235) bent toward the bottom of the smoke collecting hood (2); A first flow channel is formed between the first extension portion (241) and the second extension portion (235), and the first flow channel is connected to the air outlet of the smoke collecting hood (2); The second extension portion (235) is covered on the first extension portion (241); A second flow channel is formed between the second extension portion (235) and the inner wall of the smoke collecting hood (2), and the first flow channel, the second flow channel and the air outlet of the smoke collecting hood (2) are connected in sequence.

2. The air inlet device according to claim 1, It is characterized in that The edge of the second extension portion (235) is located below the edge of the first extension portion (241).

3. The air inlet device according to claim 2, It is characterized in that A vertical distance between an edge of the first extension portion (241) and an edge of the second extension portion (235) is greater than or equal to 5 mm.

4. The air inlet device according to claim 1, It is characterized in that The cross-sectional area of ​​the first flow channel is S1; the cross-sectional area of ​​the second flow channel is S2; both S1 and S2 are larger than the cross-sectional area of ​​the air outlet of the fan assembly of the range hood.

5. The air inlet device according to claim 1, It is characterized in that A closing piece (232) is provided between the rear end of the pressure diffuser (23) and the inner side wall of the smoke collecting hood (2); the closing piece (232) is capable of closing the air inlet located at the rear side of the pressure diffuser (23).

6. The air inlet device according to claim 5, It is characterized in that A flange structure (233) is provided on one end of the closing member (232) away from the diffuser plate (23), and the flange structure (233) is fixedly connected to the inner side wall of the smoke collecting hood (2).

7. The air inlet device according to claim 6, It is characterized in that A connecting piece is provided at the front end of the diffusion plate (23), and the connecting piece is fixedly connected to the smoke collecting hood (2).

8. The air inlet device according to any one of claims 1 to 7, It is characterized in that The angle between the bottom surface of the front end of the smoke collecting hood (2) and the horizontal plane is a, and a is 10°-25°; and / or; The angle between the top surface (231) of the pressure diffuser plate (23) and the horizontal plane is b, and b is 10°-25°.

9. The air inlet device according to any one of claims 1 to 7, It is characterized in that The first extension portion (241) and the second extension portion (235) are both arc-shaped structures; and / or; The edge of the first extension portion (241) is a pressed edge structure (4); and / or; The edge of the second extension portion (235) is a pressed edge structure (4).

10. The air inlet device according to any one of claims 1 to 7, It is characterized in that The smoke collecting hood (2) comprises a smoke collecting hood body (24), a cover plate (21), a connecting plate (22), a rear plate (25) and an oil cup hanging foot (26). Along the vertical direction, the smoke hood body (24), the diffuser plate (23), the connecting plate (22) and the cover plate (21) are arranged in sequence from bottom to top; the rear plate (25) is arranged at the rear end of the smoke hood body (24); and the oil cup hanging foot (26) is arranged at the bottom end of the smoke hood body (24).

11. A range hood, It is characterized in that The invention comprises the air inlet device according to any one of claims 1 to 10.

Images