A range hood

Abstract

The utility model relates to a kind of range hood, including: fan box, inside hollow is formed the front side open container cavity, and the container cavity has oil fume inlet and oil fume outlet;Fan system is located in the container cavity, and the air inlet of fan system is communicated the oil fume inlet, the air outlet of fan system is communicated the oil fume outlet;Fan cover is located at the front side open place of the container cavity, to close front side open;Still include: the support connected with fan system, fastener passes through the through-hole on the wall surface of fan box and is connected with support, to press the support in the inner wall surface of fan box, and the local of fastener is located outside fan box, and be covered by the fan cover.The utility model can avoid fastener exposure while ensuring the connection strength of fan system.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a range hood. Background Technology

[0002] A range hood is a kitchen appliance used to purify the kitchen environment. It works by using a fan system installed inside the casing to draw in and exhaust cooking fumes. Centrifugal fans are a common type of fan system, typically consisting of a volute, an impeller housed within the volute, and a motor that drives the impeller. As the impeller rotates, the pressure at the center of the impeller decreases, falling below atmospheric pressure, thus drawing in the cooking fumes from below. After being accelerated by the fan, the volute collects the fumes and guides them outdoors.

[0003] To confine the fan system within the casing, Chinese utility model patent application number 202121168332.2 and authorization announcement number CN215216389U, entitled "A Range Hood," discloses a range hood comprising: a fan frame; and a fan system disposed within the fan frame. The fan frame includes a support assembly and multiple side plates, which surround the support assembly to form a cavity for accommodating the fan system. The fan system is connected to the support assembly. The support assembly serves as the main skeleton of the fan frame, and the casing structure is formed by connecting the support assembly and multiple side plates. The fan system can be connected to the support assembly, and each side plate can be embedded in the rigid support assembly as a small-area skin plate. This structural design effectively improves the overall rigidity of the fan frame of the range hood, ensuring its stability.

[0004] Existing technologies also include directly fixing the fan system to the casing using fasteners such as screws. However, this has the problem of insufficient connection strength between the fan system and the casing, and the screws and other fasteners being exposed within the user's field of vision, thus affecting the user experience. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a range hood that ensures the connection strength of the fan system while avoiding the exposure of fasteners, in light of the current state of the technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a range hood, comprising:

[0007] The fan box has a hollow interior forming a cavity with an open front, and the cavity has an oil fume inlet and an oil fume outlet;

[0008] A fan system is located within the cavity, with the fan system's air inlet connected to the oil fume inlet and the fan system's air outlet connected to the oil fume outlet.

[0009] A fan cover is provided at the front opening of the cavity to close the front opening;

[0010] Its characteristic is that it also includes:

[0011] The bracket connected to the fan system has fasteners that pass through through holes in the fan housing wall and are connected to the bracket to press the bracket against the inner wall of the fan housing. Part of the fasteners is located outside the fan housing and is covered by the fan cover.

[0012] The bracket is connected to the fan box by fasteners, and the bracket connected to the fan box is pressed against the inner wall of the fan box by the fasteners. This ensures that the fan system is stably installed in the fan box and ensures the connection strength between the fan system and the fan box. Since the fasteners are partially located outside the fan box and are covered by the fan cover, the fasteners are not exposed and are not visible to the user.

[0013] The fasteners mentioned above can be existing screws, bolts, nuts, etc.

[0014] Preferably, the fastener is a first screw, the shank of which passes through a through hole in the fan box wall and is threaded to the bracket, and its head is located outside the fan box and is covered by the fan cover.

[0015] To further improve the connection strength, preferably, there are at least two fasteners, which are respectively connected to the left and right side walls of the fan box;

[0016] The left and right sides of the fan cover extend backward to form flanges, and the two flanges are located on the left and right sides of the fan box respectively, covering their respective fasteners.

[0017] Preferably, the bracket has an L-shaped first plate and a second plate connected together. The first plate is attached to the front side of the fan system, and the second plate extends forward relative to the first plate and is connected to the left and right side walls of the corresponding fan box by the fasteners mentioned above.

[0018] Preferably, each second plate has at least two fasteners, which are spaced apart in the vertical direction with a spacing of 20-50 mm. If the spacing is too small, the fixing effect on the fan system will be insufficient; if the spacing is too large, the force on a single fastener will be too great.

[0019] To further enhance strength, the edges of both the first and second plates are bent to form a first folded edge; triangular ribs are provided at the connection between the first and second plates. The design of the first folded edge and triangular ribs can improve the structural strength of the support, ensure the connection between the fan system and the fan box, and reduce the vibration transmission during the operation of the fan system.

[0020] Preferably, the extension height of the first folded edge relative to the corresponding first plate and second plate is 3 to 6 mm.

[0021] Preferably, the left and right side walls of the fan box each have a first wall extending forward, a second wall extending backward from the front side of the first wall into the fan box, and a third wall extending forward from the inner side of the second wall.

[0022] The fastener is located on the third wall;

[0023] The flange is attached to the first wall and spaced apart from the third wall.

[0024] This ensures that the fan cover tightly seals the front opening of the fan box, preventing oil leakage while also covering the fasteners.

[0025] Furthermore, the left and right side walls of the fan box also have a second folded edge extending backward from the front side edge of the third wall into the fan box, and the back side of the fan cover is opposite to the front side of the second folded edge.

[0026] In the above embodiments, preferably, the fastener is positioned relatively close to the center of gravity of the wind turbine system. This minimizes the lever arm of the wind turbine system's center of gravity acting on the fastener, resulting in a minimal torque on the fastener and ensuring that it will not loosen or be damaged.

[0027] Preferably, the fan system is a centrifugal fan, including a volute, which is connected to the support via legs.

[0028] Compared with the prior art, the advantages of this utility model are as follows: the bracket and the fan box are connected by fasteners, and the bracket connected to the fan box is pressed against the inner wall of the fan box by the action of the fasteners, which can ensure that the fan system is stably installed in the fan box and ensure the connection strength between the fan system and the fan box; and since the fasteners are partially located outside the fan box and are covered by the fan cover, the fasteners are not exposed, that is, they are not visible to the naked eye of the user. Attached Figure Description

[0029] Figure 1 This is a partial structural schematic diagram of an embodiment of the present utility model;

[0030] Figure 2 This is an exploded perspective view of a portion of the structure of an embodiment of this utility model;

[0031] Figure 3 for Figure 2 Enlarged view of section A;

[0032] Figure 4 This is a cross-sectional view of a portion of the structure of an embodiment of this utility model. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] like Figures 1-4 As shown, this is a preferred embodiment of a range hood according to the present invention. The range hood includes a fan box 1, a fan system 2, a fan cover 3, a bracket 4, and a smoke collection hood.

[0035] With the side of the range hood facing the user as the front side, the interior of the fan housing 1 is hollow, forming a cavity 10 with an open front. The bottom of the cavity 10 is open and serves as the fume inlet 10a, and the top wall of the cavity 10 has a fume outlet 10b. The left and right side walls of the cavity 10 each have a first wall 11 that is vertically arranged and extends forward, a second wall 12 that extends backward from the front side of the first wall 11 into the fan housing 1, a third wall 13 that extends forward from the inner side of the second wall 12, and a second folded edge 14 that extends backward from the front side of the third wall 13 into the fan housing 1. Each third wall 13 has two through holes 100 that penetrate the wall thickness, arranged one above the other with an interval of 20-50 mm (any value between 20-50 mm, such as 20, 30, 40, 50 mm, etc.).

[0036] The aforementioned fan system 2 is an existing centrifugal fan with a volute 20, an impeller, and a motor for driving the impeller to rotate. It is located inside the cavity 10, and the air inlet of the fan system 2 is connected to the fume inlet 10a, and the air outlet of the fan system 2 is connected to the fume outlet 10b, so as to drive the fume into the fan box 1 from the fume inlet 10a and discharge it from the fume outlet 10b.

[0037] There are two brackets 4, which are connected to the two legs 21 on the front side of the volute 20 respectively. Specifically, each bracket 4 has a first plate 41 and a second plate 42 arranged in an L-shape and connected together. The edges of the first plate 41 and the second plate 42 are bent to form a first folded edge 40. A triangular rib 43 is provided at the connection between the first plate 41 and the second plate 42. The first plate 41 is attached to the front side of the corresponding leg 21 and the two are connected by a second screw. The second plate 42 extends forward relative to the first plate 41, and the plate surface of the second plate 42 is attached to the inner side of the corresponding third wall 13. The second plate 42 is provided with threaded holes 420 at the positions of the through holes 100 on the third wall 13. The shank of the first screw passes through the through hole 100 on the wall of the fan box 1 and is threaded to the threaded hole 420 of the bracket 4. The head of the first screw is located outside the fan box 1 to press the plate surface of the second plate 42 tightly against the inner wall surface of the corresponding third wall 13. In this embodiment, the number of first screws is the same as the number of through holes 100. Simultaneously, each first screw is positioned relatively close to the center of gravity of the fan system 2 in the vertical direction. This minimizes the lever arm of the fan system 2's center of gravity acting on the first screw, thus minimizing the torque on the first screw and ensuring it will not loosen.

[0038] The aforementioned fan cover 3 is located at the front opening of the cavity 10 to close the front opening. Specifically, the back of the fan cover 3 faces the front side of the second folded edge 14. The left and right sides of the fan cover 3 both extend rearward to form flanges 31. The two flanges 31 are located on the left and right sides of the fan housing 1, respectively, to cover the heads of their corresponding first screws. Specifically, the flanges 31 fit snugly against the first wall 11 to effectively close the front opening of the fan housing and prevent oil leakage. The flanges 31 are spaced apart from the third wall 13 to provide accommodating space for the heads of the first screws. Meanwhile, in this embodiment, the fan cover 5 is connected to the fan housing by screws.

[0039] The aforementioned fume hood is existing technology (not shown in the figure). The fume hood is located on the lower side of the fan box 1 and is used to collect cooking fumes under the action of the fan system. The fumes in the fume hood enter the fan box through the fume inlet 10a.

[0040] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0041] The term "vertical" is also used in the specification and claims of this utility model, meaning basically along the up and down direction, and is not limited to just the vertical direction, but can also be slightly deviated from the vertical direction.

Claims

1. A range hood, comprising: The fan box (1) has a hollow interior forming a cavity (10) with an open front side, and the cavity (10) has an oil fume inlet (10a) and an oil fume outlet (10b); A fan system (2) is provided in the cavity (10), and the air inlet of the fan system (2) is connected to the oil fume inlet (10a), and the air outlet of the fan system (2) is connected to the oil fume outlet (10b). The fan cover (3) is located at the front opening of the cavity (10) to close the front opening; Its features It also includes: The bracket (4) connected to the fan system (2) has fasteners that pass through through holes (100) on the wall of the fan box (1) and are connected to the bracket (4) to press the bracket (4) against the inner wall of the fan box (1), and a portion of the fasteners is located outside the fan box (1) and is covered by the fan cover (3).

2. The range hood according to claim 1, characterized in that: The fastener is a first screw, whose shank passes through the through hole (100) on the wall of the fan box (1) and is threaded to the bracket (4). Its head is located outside the fan box (1) and is covered by the fan cover (3).

3. The range hood according to claim 1, characterized in that: There are at least two fasteners, which are respectively connected to the left and right side walls of the fan box (1); The left and right sides of the fan cover (3) extend backward to form flanges (31), and the two flanges (31) are located on the left and right sides of the fan box (1) respectively, covering their respective fasteners.

4. The range hood according to claim 3, characterized in that: The bracket (4) has an L-shaped arrangement and a second plate (42) connected together. The first plate (41) is attached to the front side of the fan system (2), and the second plate (42) extends forward relative to the first plate (41) and is connected to the left and right side walls of the corresponding fan box (1) by the fasteners.

5. The range hood according to claim 4, characterized in that: Each second plate (42) has at least two fasteners, which are arranged at intervals in the vertical direction with a spacing of 20 to 50 mm.

6. The range hood according to claim 4, characterized in that: The edges of the first plate (41) and the second plate (42) are bent to form a first folded edge (40); a triangular rib (43) is provided at the connection between the first plate (41) and the second plate (42).

7. The range hood according to claim 3, characterized in that: The left and right side walls of the fan box (1) are each formed by a first wall (11) extending forward, a second wall (12) extending backward from the front side of the first wall (11) into the fan box (1), and a third wall (13) extending forward from the inner side of the second wall (12). The fastener is located on the third wall (13); The flange (31) is attached to the first wall (11) and spaced apart from the third wall (13).

8. The range hood according to claim 7, characterized in that: The left and right side walls of the fan box (1) also have a second folded edge (14) extending backward from the front side of the third wall (13) into the fan box (1), and the back side of the fan cover (3) is opposite to the front side of the second folded edge (14).

9. The range hood according to any one of claims 1 to 8, characterized in that: The fastener is relatively close to the center of gravity of the fan system (2).

10. The range hood according to any one of claims 1 to 8, characterized in that: The fan system (2) is a centrifugal fan, including a volute (20), which is connected to the support (4) via a foot (21).

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