Air outlet cover for range hood, air outlet cover assembly and range hood

Abstract

The utility model discloses an air outlet cover for a range hood, an air outlet cover assembly and the range hood, and the air outlet cover for the range hood comprises a cover body and a check valve, the check valve comprises a mounting part and a flexible part; the mounting piece is arranged in the accommodating cavity and is provided with a front-back through air inlet hole; the flexible part is arranged at the air inlet of the mounting part, has elasticity in the front-back direction, and has an opening state that the air inlet is opened by being compressed backwards under stress or a closing state that the air inlet is covered by releasing energy forwards. By arranging the flexible part, the flexible part is stressed to be compressed backwards to open the air inlet hole or release energy forwards to cover the air inlet hole, the flexible part is not prone to being damaged or losing efficacy, and meanwhile due to the fact that the flexible part is soft in material, when the flexible part opens or covers the air inlet hole, noise is small, and almost no noise exists.

Description

Technical Field

[0001] The utility model relates to the technical field of air outlet hoods, and in particular to an air outlet hood for a range hood, an air outlet hood assembly, and a range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment and is used to quickly extract oil smoke and discharge it to the outside. The air outlet hood of the range hood is used to connect the fan outlet of the range hood with the air outlet pipe, and the check valve is used to prevent the oil smoke from flowing back.

[0003] For example, the Chinese utility model "An air outlet hood for range hoods" with authorization number CN207501218U previously applied for by the applicant comprises a hood body and a check valve plate, the check valve plate is arranged in the upper port of the hood body by rotating through a rotating shaft, a first impact member is arranged on the hood body, when the check valve plate rotates downward and closes the port of the hood body, the first impact member is hit and emits an impact sound; the check valve plate comprises two semicircular plates, and a rotating shaft seat with a rotating shaft hole is respectively arranged on the straight side of each plate body, and the rotating shaft passes through the rotating shaft hole of the rotating shaft seat in turn and is respectively hinged to each plate body; a check spring is respectively arranged at both ends of the rotating shaft, and each check spring is respectively limited between the rotating shaft seat and the corresponding side wall of the hood body; a reset torsion spring is arranged in the middle of the rotating shaft, and the reset torsion spring is located above the check valve plate, and the reset torsion spring can make each plate body in a vertical state have a tendency to rotate in the horizontal direction.

[0004] However, the above-mentioned air outlet hood has the following problems:

[0005] First, the check valve plate is reset by the check spring and the reset torsion spring. After long-term use, the check spring and the reset torsion spring are easily invalidated by the influence of high temperature and high pressure oil smoke;

[0006] Second, the check valve plate is often made of metal. Under the high pressure of oil smoke, the check valve plate rotates and opens, which may hit the corresponding position on the back of the check valve plate and make a lot of noise. Or when the check valve plate rotates and closes the port of the cover body, the check valve plate hits the first impact member or the corresponding position of the cover body, causing a lot of noise. Utility Model Content

[0007] The first technical problem to be solved by the utility model is to provide an air outlet cover for a range hood which is not prone to failure and has low noise in view of the current status of the prior art.

[0008] The second technical problem to be solved by the utility model is to provide an air outlet hood assembly for a range hood.

[0009] The third technical problem to be solved by the utility model is to provide a range hood.

[0010] The utility model adopts a technical solution to solve the above-mentioned first technical problem: an air outlet cover for a range hood, comprising:

[0011] The cover body has a penetrating accommodating cavity, and a front air inlet and a rear air outlet respectively connected to the accommodating cavity;

[0012] A check valve is disposed in the accommodating cavity and is configured to be opened in one direction toward the rear air outlet;

[0013] Features:

[0014] The check valve comprises

[0015] The mounting member is arranged in the accommodating cavity and has an air inlet hole penetrating from front to back;

[0016] The flexible member is arranged at the air inlet of the mounting member and has elasticity along the front-to-back direction, and has an open state in which it is compressed backward by force to open the air inlet, or a closed state in which it releases energy forward to cover the air inlet.

[0017] In order to facilitate the installation of the flexible member, the check valve also includes

[0018] The fixing plate is located behind the air inlet hole and forms an air inlet gap with the rear edge of the hole wall of the air inlet hole;

[0019] A connecting piece connected to the fixing plate and the hole wall of the air inlet hole;

[0020] The flexible member is connected to the front side of the fixing plate.

[0021] The installation of the flexible member is facilitated by providing a fixing sheet.

[0022] In order to avoid interference with the expansion and contraction of the flexible member, the connecting member is block-shaped and partially connected to the outer peripheral wall of the fixing plate. In this way, the connecting member is relatively outside the fixing plate, thereby avoiding interference with the expansion and contraction of the flexible member.

[0023] In order to facilitate the flexible member to be compressed to open the air inlet hole, a groove connected to the air inlet hole is opened on the hole wall of the air inlet hole at a position adjacent to the connecting member, and the depth of the groove gradually decreases from front to back. As the depth of the groove decreases, the oil smoke wind pressure increases, so that the flexible member is compressed, thereby facilitating the opening of the air inlet hole and facilitating the discharge of oil smoke.

[0024] In order to facilitate production, the shape of the flexible member and the shape of the air inlet hole are both disc-shaped. In the closed state, the flexible member is sealed and matched with the wall of the air inlet hole.

[0025] The flexible member can be made of a variety of materials. Preferably, the flexible member is made of silicone or rubber.

[0026] In order to facilitate the flexible member to be compressed to open the air inlet hole, the hole wall of the air inlet hole at least partially has a wind guide surface that gradually tilts from front to back toward the central area of ​​the air inlet hole. By providing the wind guide surface, the wind is easily gathered toward the center, and the flexible member is easily compressed to open the air inlet hole.

[0027] The utility model adopts a technical solution to solve the second technical problem as follows: an air outlet cover assembly for a range hood, characterized in that: it includes the air outlet cover as described above, and also includes

[0028] The air outlet smoke pipe is mounted outside the mounting part and is connected to the air outlet cover.

[0029] In order to facilitate the installation of the smoke exhaust pipe, one of the installation component and the smoke exhaust pipe has a limiting block, and the other has a limiting hole for the limiting block to be inserted.

[0030] The utility model adopts a technical solution to solve the third technical problem as follows: a range hood, characterized in that it comprises the air outlet cover as described above.

[0031] Compared with the prior art, the advantages of the present invention are: by setting a flexible part, the flexible part is compressed backward under force to open the air inlet hole, or releases energy forward to cover the air inlet hole, the flexible part is not easy to be damaged or fail, and because the material of the flexible part itself is soft, the noise is small or almost no noise when the flexible part opens or covers the air inlet hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the air outlet cover of the embodiment of the utility model;

[0033] Figure 2 It is a cross-sectional view of the air outlet cover of the embodiment of the utility model;

[0034] Figure 3 for Figure 2 Schematic diagram of the air outlet cover in another state (the flexible member is compressed and the air inlet is in an open state);

[0035] Figure 4 This is an exploded view of the air outlet cover of the utility model embodiment;

[0036] Figure 5 It is a schematic diagram of the installation part of the embodiment of the utility model;

[0037] Figure 6 It is a three-dimensional schematic diagram of the air outlet cover assembly of the embodiment of the utility model;

[0038] Figure 7 This is an exploded view of the air outlet cover assembly according to an embodiment of the present utility model. DETAILED DESCRIPTION

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

[0040] See also Figure 1 to Figure 5 , is a preferred embodiment of the utility model for the air outlet hood of the range hood. The air outlet hood for the range hood comprises a hood body 1 and a check valve 2.

[0041] Among them, see Figure 2 to Figure 4 The cover body 1 has a penetrating accommodating cavity 11, a front air inlet 12 and a rear air outlet 13 respectively connected to the accommodating cavity 11.

[0042] See also Figure 2 to Figure 5 The check valve 2 is arranged in the accommodating chamber 11 and is configured to be opened unidirectionally toward the rear air outlet 13. The check valve 2 includes a mounting member 21, a flexible member 22, a fixing plate 23, and a connecting member 24. The mounting member 21, the fixing plate 23, and the connecting member 24 are an integral member or can be separate members.

[0043] See also Figure 2 to Figure 5 The mounting member 21 is disposed in the accommodating cavity 11 and has an air inlet hole 211 extending from front to back; a groove 212 communicating with the air inlet hole 211 is formed on the wall of the air inlet hole 211 at a position adjacent to the connecting member 24, and the depth of the groove 212 gradually decreases from front to back. The wall of the air inlet hole 211 has a wind guide surface 213 that gradually tilts from front to back toward the central area of ​​the air inlet hole 211. The mounting member 21 can be connected to the housing 1 in an existing manner, such as by welding, screw fixing, etc.

[0044] See also Figure 1 to Figure 4 The flexible member 22 is disposed at the air inlet 211 of the mounting member 21 and has elasticity along the front-to-back direction, and has an open state in which the air inlet 211 is opened by being compressed backward by force ( Figure 3 ), or release energy forward to cover the closed state of the air inlet 211 ( Figure 1 , Figure 2 The flexible member 22 is made of silicone or rubber. The shape of the flexible member 22 and the shape of the air inlet hole 211 are both disc-shaped. In the closed state, the flexible member 22 is sealed with the hole wall of the air inlet hole 211. The flexible member 22 is connected to the front side of the fixing plate 23 by bonding, clamping, screw fixing, etc.

[0045] See also Figure 2 to Figure 5 The fixing plate 23 is located behind the air inlet hole 211 , and forms an air inlet gap X between the fixing plate 23 and the rear edge of the hole wall of the air inlet hole 211 .

[0046] See also Figure 2 to Figure 5 The connecting member 24 is connected to the fixing plate 23 and the hole wall of the air inlet hole 211 ; the connecting member 24 is block-shaped and partially connected to the outer peripheral wall of the fixing plate 23 .

[0047] See also Figure 6-7 , which is a preferred embodiment of the air outlet hood assembly of the utility model for a range hood. The air outlet hood assembly includes the above-mentioned air outlet hood, and also includes an air outlet smoke pipe 3, which is mounted outside the mounting member 21 and docked with the air outlet hood 100. The mounting member 21 has a limit block 214, and the air outlet smoke pipe 3 has a limit hole 31 for the limit block 214 to be inserted, and the positions of the limit block 214 and the limit hole 31 can also be interchangeable. After the air outlet smoke pipe 3 is connected to the mounting member 21, a tape is wrapped around the air outlet smoke pipe 3 to seal the air outlet smoke pipe 3 and the cover body 1, or a locking ring is installed outside the air outlet smoke pipe 3 and the cover body 1. These are existing structures and will not be expanded here.

[0048] This embodiment also includes a range hood, which adopts the above-mentioned air outlet hood.

[0049] The working principle and usage process are as follows.

[0050] Figure 3 The hollow arrows indicate the exhaust path of the oil smoke.

[0051] See also Figure 2 In the initial state, the flexible member 22 closes the air inlet hole 211 .

[0052] See also Figure 3 After the oil smoke reaches the front air inlet 12 of the cover body 1, it acts on the flexible member 22, and the flexible member 22 is compressed backward to open the air inlet hole 211. After the oil smoke passes through the gap X, it reaches the rear air outlet 13 of the cover body 1.

[0053] After the range hood is finished working, the flexible member 22 automatically releases energy forward and resets, thereby closing the air inlet hole 211 ( Figure 2 ).

[0054] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. An air outlet hood for a range hood, comprising: The cover body (1) has a penetrating accommodating cavity (11), a front air inlet (12) and a rear air outlet (13) respectively connected to the accommodating cavity (11); A check valve (2) is arranged in the accommodating chamber (11) and is configured to be able to open in one direction toward the rear air outlet (13); Features: The check valve (2) comprises A mounting member (21) is disposed in the accommodating cavity (11) and has an air inlet hole (211) penetrating from front to back; The flexible member (22) is arranged at the air inlet hole (211) of the mounting member (21) and has elasticity in the front-to-back direction, and has an open state in which it is compressed backwards by force to open the air inlet hole (211), or a closed state in which it releases energy forwards to cover the air inlet hole (211).

2. The air outlet cover according to claim 1, characterized in that: The check valve (2) also includes The fixing plate (23) is located behind the air inlet hole (211) and forms an air inlet gap (X) with the rear edge of the hole wall of the air inlet hole (211); A connecting piece (24) connected to the fixing plate (23) and the hole wall of the air inlet hole (211); The flexible member (22) is connected to the front side of the fixing plate (23).

3. The air outlet cover according to claim 2, characterized in that: The connecting piece (24) is block-shaped and partially connected to the outer peripheral wall of the fixing plate (23).

4. The air outlet cover according to claim 2, characterized in that: A groove (212) connected to the air inlet hole (211) is formed on the hole wall of the air inlet hole (211) at a position adjacent to the connecting piece (24), and the depth of the groove (212) gradually decreases from front to back.

5. The air outlet cover according to claim 1, characterized in that: The shape of the flexible member (22) and the shape of the air inlet hole (211) are both disc-shaped; in the closed state, the flexible member (22) and the wall of the air inlet hole (211) are sealed and matched.

6. The air outlet cover according to claim 1, characterized in that: The flexible member (22) is made of silica gel or rubber.

7. The air outlet cover according to claim 1, characterized in that: At least part of the hole wall of the air inlet hole (211) has an air guide surface (213) that gradually inclines from the front to the back toward the central area of ​​the air inlet hole (211).

8. An air outlet hood assembly for a range hood, characterized in that: The invention comprises an air outlet cover as claimed in any one of claims 1 to 7, and further comprises a The air outlet smoke pipe (3) is sleeved outside the mounting member (21) and is butt-jointed with the air outlet cover (100).

9. The air outlet cover assembly according to claim 8, characterized in that: One of the mounting member (21) and the smoke outlet pipe (3) has a limiting block (214), and the other has a limiting hole (31) for the limiting block (214) to be inserted.

10. A range hood, characterized in that: It comprises the air outlet cover as claimed in any one of claims 1 to 7.

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