Air outlet cover assembly for range hood and range hood

Abstract

The utility model discloses an air outlet cover assembly for a range hood and the range hood. The air outlet cover assembly for the range hood comprises an air outlet cover and an air outlet smoke pipe, the upper portion of the air outlet cover comprises an inner ring wall and an outer ring wall, and a mounting groove is defined by the outer ring wall and the inner ring wall. The lower part of the air outlet smoke pipe is connected with the inner ring wall; the air outlet cover assembly further comprises a pressing ring, an elastic sealing ring and a limiting assembly. The air outlet smoke pipe is sleeved with the pressing ring, and the pressing ring can be arranged in the mounting groove in an upward moving mode; the elastic sealing ring is arranged outside the air outlet smoke pipe in a sleeving mode, and the pressed ring moves upwards, is squeezed upwards and then deforms, and abuts against the outer ring wall and the air outlet smoke pipe. The limiting assembly and the outer ring wall of the air outlet cover are relatively fixed, and the limiting assembly is located above the elastic sealing ring. By arranging the proper air outlet cover upper structure, the pressing ring, the elastic sealing ring and the limiting assembly, the air outlet cover and the air outlet smoke pipe can be sealed, and the sealing effect is good.

Description

Technical Field

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

[0003] The exhaust pipe must meet the pipe routing requirements of different environments, so the exhaust pipe is designed to have a certain degree of flexibility and can be bent and stretched at will. The exhaust pipe is connected to the connecting ring of the exhaust hood. The connecting ring is often made of plastic and has a certain degree of rigidity, which makes it difficult to connect the exhaust hood and the exhaust pipe. At present, screws and adhesive tape are mainly used. Specifically, the exhaust hood and the exhaust pipe are connected by screws to prevent the exhaust pipe from being blown away by the wind when the range hood is working. The gap between the exhaust hood and the exhaust pipe is sealed with adhesive tape. However, because the exhaust pipe and the exhaust hood contain a mixture of oil and smoke, and the current adhesive tape is generally not oil-resistant and will react chemically with the oil and smoke mixture, or because the adhesive tape is aged, after a period of use, the sealing between the exhaust hood and the exhaust pipe may be reduced, resulting in air leakage.

[0004] In addition, the air outlet hood and the air outlet smoke pipe can also be connected by other connection structures. For example, in the Chinese utility model patent with the authorization number CN211119564U previously applied by the applicant, a sealing ring is provided between the inner peripheral wall of the air outlet pipe (air outlet smoke pipe) and the outer peripheral wall of the cover body (air outlet hood) to form a sealed connection between the two, and a clamp is sleeved on the outer peripheral wall of the air outlet pipe (air outlet smoke pipe) to fix the air outlet pipe to the cover body (air outlet hood). That is, the patent connects the air outlet hood and the air outlet smoke pipe through a sealing ring and a clamp.

[0005] However, the above patent does not disclose other connection structures between the air outlet cover and the air outlet smoke pipe. Utility Model Content

[0006] The first technical problem to be solved by the utility model is to provide an air outlet hood assembly for a range hood, which is capable of sealing the air outlet hood and the air outlet smoke pipe and has a good sealing effect, in view of the current status of the prior art.

[0007] The second technical problem to be solved by the utility model is to provide a range hood.

[0008] The utility model adopts the following technical solution to solve the above-mentioned first technical problem: an air outlet cover assembly for a range hood, comprising:

[0009] The air outlet cover has an air outlet cavity penetrating from top to bottom, an air inlet connected to the air outlet cavity and located at the bottom, and an air outlet connected to the air outlet cavity and located at the top;

[0010] The air outlet smoke pipe is connected to the air outlet of the air outlet hood;

[0011] Features:

[0012] The upper part of the air outlet cover includes an inner ring wall defined by the upper part of the air outlet cavity wall, and an outer ring wall arranged outside the inner ring wall and connected to the inner ring wall, wherein the outer ring wall and the inner ring wall form a mounting groove open toward the air outlet direction;

[0013] The lower part of the air outlet pipe is sleeved outside the inner ring wall and is located in the installation groove, and the lower part of the air outlet pipe is connected to the inner ring wall; the air outlet cover assembly also includes

[0014] The pressure ring is sleeved outside the air outlet pipe and is arranged in the installation groove in a manner that it can move upward;

[0015] The elastic sealing ring is sleeved outside the smoke outlet pipe and arranged in the installation groove. The elastic sealing ring is located above the pressure ring. The pressure ring moves upward and is squeezed upward to deform and abut against the outer ring wall and the smoke outlet pipe.

[0016] The limit assembly is relatively fixed to the outer ring wall of the air outlet cover and is located above the elastic sealing ring. The limit assembly is used to set an upper limit on the elastic sealing ring.

[0017] The structure of the limiting component can be various. Preferably, in order to improve the limiting effect of the elastic sealing ring, the limiting component includes

[0018] A limiting ring is sleeved outside the air outlet pipe and arranged in the installation groove, and the limiting ring is located above the elastic sealing ring;

[0019] The limiting member is fixed to the outer ring wall, and the end of the limiting member extends into the installation groove and is located above the limiting ring.

[0020] In this way, by providing the limiting member, the limiting ring can be prevented from escaping upward from the installation groove, thereby preventing the elastic sealing ring from escaping from the installation groove.

[0021] Alternatively, the limiting component may also be an integrated piece.

[0022] In order to facilitate the installation of the limiting ring, the limiting ring is arranged in the installation groove in a manner that it can move up and down. In this way, after the elastic sealing ring is installed in the installation groove, the limiting ring is placed in the installation groove, and the limiting ring is easy to install.

[0023] Alternatively, the limiting ring may also be fixed to the outer ring wall or to the limiting member.

[0024] In order to facilitate manufacturing, the limiting member is a limiting pin, and there are at least two limiting pins, which are distributed at intervals along the circumferential direction of the outer ring wall. The limiting member can also be a screw.

[0025] There may be various ways of connecting the smoke outlet pipe and the inner ring wall of the air outlet hood. Preferably, the smoke outlet pipe and the inner ring wall of the air outlet hood are connected by a connector, and the end of the connector extends into the mounting groove and is located below the pressure ring.

[0026] The connecting piece has two functions: one is to connect the air outlet smoke pipe and the inner ring wall of the air outlet hood, and the other is that the connecting piece plays a role of limiting the elastic sealing ring.

[0027] Alternatively, the smoke outlet pipe and the inner ring wall of the air outlet cover may also be connected by bonding or the like.

[0028] For the convenience of manufacturing, the connecting member is a screw, and there are at least two screws, which are distributed at intervals along the circumference of the inner ring wall. The connecting member can also be a limit pin.

[0029] In order to facilitate the sealing between the air outlet smoke pipe and the inner ring wall of the air outlet cover, the inner ring wall has a downwardly recessed groove, and there are at least two grooves which are spaced apart along the circumference of the inner ring wall.

[0030] The groove is provided to locally guide the air in the air outlet cavity, so that the air outlet pipe expands outward and the elastic sealing ring is compressed. The elastic sealing ring acts on the air outlet pipe in reverse, which is beneficial to the sealing between the air outlet pipe and the inner ring wall of the air outlet cover.

[0031] In order to further facilitate the sealing between the smoke outlet pipe and the outer ring wall of the smoke outlet hood, when the smoke outlet hood is in a non-air outlet state, the elastic sealing ring abuts against the outer ring wall and the smoke outlet pipe.

[0032] The technical solution adopted by the utility model to solve the second technical problem is: a range hood, characterized by comprising the air outlet hood assembly for the range hood as described above.

[0033] Compared with the prior art, the advantages of the utility model are: by setting a suitable upper structure of the air outlet hood, setting a pressure ring, an elastic sealing ring, and a limit assembly, the pressure ring moves upward and squeezes the elastic sealing ring upward, and the elastic sealing ring is deformed and abuts against the outer ring wall and the air outlet smoke pipe, which is beneficial to the sealing between the air outlet hood and the air outlet smoke pipe. This structure can also achieve sealing between the air outlet hood and the air outlet smoke pipe, and the sealing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of an embodiment of the utility model;

[0035] Figure 2 for Figure 1A magnified schematic diagram of the local A in the middle;

[0036] Figure 3 for Figure 1 Section along BB direction;

[0037] Figure 4 for Figure 3 A magnified schematic diagram of the local C in the middle;

[0038] Figure 5 An exploded view of an embodiment of the utility model;

[0039] Figure 6 for Figure 3 Exploded diagram of

[0040] Figure 7 A schematic diagram of the air leakage path when the air outlet hood is connected to the air outlet smoke pipe;

[0041] Figure 8 for Figure 3 Schematic diagram of the air leakage path in the pipeline. DETAILED DESCRIPTION

[0042] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0043] See also Figures 1 to 8 The air outlet cover assembly for the range hood comprises an air outlet cover 1, an air outlet pipe 2, a pressure ring 3, an elastic sealing ring 4, a stopper assembly 5, and a connecting piece 6.

[0044] Among them, see Figure 3 to Figure 6 The air outlet cover 1 has an air outlet cavity 11 penetrating from top to bottom, an air inlet 12 communicating with the air outlet cavity 11 and located at the bottom, and an air outlet 13 communicating with the air outlet cavity 11 and located at the top. The upper part of the air outlet cover 1 includes an inner ring wall 14 defined by the upper part of the cavity wall of the air outlet cavity 11, an outer ring wall 15 surrounding the inner ring wall 14 and connected to the inner ring wall 14, and the outer ring wall 15 and the inner ring wall 14 form a mounting groove 16 open in the air outlet direction; the inner ring wall 14 has a groove 141 sunken downward, and the grooves 141 have four grooves and are spaced apart along the circumference of the inner ring wall 14, and the number of the grooves 141 can be adjusted as needed.

[0045] See also Figure 4 The smoke outlet pipe 2 is connected to the air outlet 13 of the air outlet cover 1; specifically, the lower part of the smoke outlet pipe 2 is sleeved outside the inner ring wall 14 and is located in the mounting groove 16, and the lower part of the smoke outlet pipe 2 is connected to the inner ring wall 14.

[0046] See also Figure 3 , Figure 4 The pressure ring 3 is sleeved on the outside of the smoke exhaust pipe 2 and is arranged in the installation groove 16 in a way that it can move upward.

[0047] See also Figure 3 , Figure 4 The elastic sealing ring 4 is sleeved outside the air outlet pipe 2 and is arranged in the installation groove 16. The elastic sealing ring 4 is located above the pressure ring 3. When the air outlet cover 1 is in a non-air outlet state, the elastic sealing ring 4 is against the outer ring wall 15 and the air outlet pipe 2.

[0048] See also Figure 3 to Figure 8 The limit assembly 5 is relatively fixed to the outer ring wall 15 of the air outlet cover 1 and is located above the elastic sealing ring 4. The limit assembly 5 is used to set the upper limit of the elastic sealing ring 4; under the effect of air leakage at the joint between the air outlet cover 1 and the air outlet smoke pipe 2 ( Figure 7 , Figure 8 ), the pressure ring 3 moves upward and presses the elastic sealing ring 4 upward, the elastic sealing ring 4 undergoes radial deformation and seals against the outer ring wall 15 and the air outlet smoke pipe 2, thereby facilitating the sealing of the air outlet smoke pipe 2 and the air outlet cover 1. During assembly, there is always a gap at the joint of the air outlet cover 1 and the air outlet smoke pipe 2, and the gap will also form after a long time of use, so the joint of the air outlet cover 1 and the air outlet smoke pipe 2 will leak. Under the effect of air leakage, the pressure ring 3 moves upward, Figure 7 The hollow arrows indicate the air leakage path. To illustrate the air leakage path more clearly, Figure 7 The gap between the air outlet pipe 2 and the air outlet cover 1 is enlarged; Figure 8 The hollow arrows indicate the air leakage path. In order to more clearly illustrate the air leakage path, Figure 8 The gap between the smoke outlet pipe 2 and the air outlet cover 1 is enlarged. The limiting assembly 5 includes a limiting ring 51 and a limiting member 52; the limiting ring 51 is sleeved on the outside of the smoke outlet pipe 2 and is arranged in the installation groove 16, and the limiting ring 51 is located above the elastic sealing ring 4; preferably, the limiting ring 51 is arranged in the installation groove 16 in a manner that it can move up and down. The limiting member 52 is fixed to the outer ring wall 15, and the end of the limiting member 52 extends into the installation groove 16 and is located above the limiting ring 51, and is used to prevent the limiting ring 51 from slipping upward. The limiting member 52 is a limiting pin, and there are four limiting pins, which are distributed at intervals along the circumference of the outer ring wall 15.

[0049] The exhaust pipe 2 and the inner ring wall 14 of the exhaust cover 1 are connected by a connector 6, the end of which extends into the mounting groove 16 and is located below the pressure ring 3. The connector 6 is a screw, and there are four screws, which are distributed at intervals along the inner ring wall 14. The number of connectors 6 can be adjusted as needed. Preferably, the connector 6 is a self-tapping screw.

[0050] This embodiment also includes a range hood, including the air outlet hood assembly for the range hood as described above.

[0051] The working principle and usage process are as follows.

[0052] During installation, the exhaust pipe 2 is connected to the inner ring wall 14 of the exhaust cover 1 through the connecting piece 6, and then the pressure ring 3, the elastic sealing ring 4, and the limit ring 51 are sequentially placed in the installation groove 16, and finally the limit piece 52 is connected to the outer ring wall 15. The installation is convenient and does not require high experience of the installer.

[0053] Under the effect of air leakage at the joint between the air hood 1 and the air smoke pipe 2, the pressure ring 3 moves upward and presses the elastic sealing ring 4 upward, and the elastic sealing ring 4 undergoes radial deformation to seal the outer ring wall 15 and the air smoke pipe 2, thereby facilitating the sealing of the air smoke pipe 2 and the air hood 1. Figure 7 , Figure 8 shown.

[0054] In addition, the effect of the air outlet in the air outlet cover 1 (from Figure 3 The air outlet direction in the air outlet cover 1 is from bottom to top), and the air outlet pipe 2 expands outward laterally (from Figure 3 (see), and the elastic sealing ring 4 is compressed, and the elastic sealing ring 4 acts in the opposite direction on the air outlet smoke pipe 2, which is also beneficial to the sealing between the outer ring wall 15 of the air outlet cover 1 and the air outlet smoke pipe 2.

[0055] In actual working conditions, the wind pressure in the air outlet cover 1 is not constant, and the pressure may fluctuate. At this time, the elastic sealing ring 4 has elastic force, which can supplement the sealing gap and achieve sealing to meet the normal dynamic sealing requirements.

[0056] In the specification and claims of the present invention, terms indicating directions, such as "upper", "lower", "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, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. An air outlet hood assembly for a range hood, comprising An air outlet cover (1) comprises an air outlet cavity (11) penetrating from top to bottom, an air inlet (12) connected to the air outlet cavity (11) and located at the bottom, and an air outlet (13) connected to the air outlet cavity (11) and located at the top; The air outlet pipe (2) is connected to the air outlet (13) of the air outlet cover (1); Features: The upper part of the air outlet cover (1) comprises an inner annular wall (14) defined by the upper part of the wall of the air outlet cavity (11), and an outer annular wall (15) arranged outside the inner annular wall (14) and connected to the inner annular wall (14), wherein the outer annular wall (15) and the inner annular wall (14) form a mounting groove (16) open in the air outlet direction; The lower part of the air outlet smoke pipe (2) is sleeved outside the inner ring wall (14) and is located in the mounting groove (16). The lower part of the air outlet smoke pipe (2) is connected to the inner ring wall (14). The air outlet cover assembly also includes A pressure ring (3) is sleeved on the outside of the smoke outlet pipe (2) and is arranged in the mounting groove (16) in a manner that allows it to move upward; An elastic sealing ring (4) is sleeved outside the smoke outlet pipe (2) and is arranged in the mounting groove (16). The elastic sealing ring (4) is located above the pressure ring (3). When the pressure ring (3) moves upward and is squeezed upward, it deforms and abuts against the outer ring wall (15) and the smoke outlet pipe (2). The limiting component (5) is relatively fixed to the outer ring wall (15) of the air outlet cover (1) and is located above the elastic sealing ring (4). The limiting component (5) is used to set the upper limit of the elastic sealing ring (4).

2. The air outlet cover assembly according to claim 1, characterized in that: The limiting component (5) comprises A limiting ring (51) is sleeved outside the smoke outlet pipe (2) and arranged in the mounting groove (16), wherein the limiting ring (51) is located above the elastic sealing ring (4); The limiting member (52) is fixed to the outer ring wall (15), and the end of the limiting member (52) extends into the installation groove (16) and is located above the limiting ring (51).

3. The air outlet cover assembly according to claim 2, characterized in that: The limiting ring (51) is arranged in the installation groove (16) in a manner that it can move up and down.

4. The air outlet cover assembly according to claim 2, characterized in that: The limiting member (52) is a limiting pin, and there are at least two limiting pins, which are distributed at intervals along the circumferential direction of the outer ring wall (15).

5. The air outlet cover assembly according to claim 1, characterized in that: The air outlet smoke pipe (2) and the inner ring wall (14) of the air outlet cover (1) are connected via a connecting piece (6), and the end of the connecting piece (6) extends into the installation groove (16) and is located below the pressure ring (3).

6. The air outlet cover assembly according to claim 5, characterized in that: The connecting member (6) is a screw, and there are at least two screws, which are distributed at intervals along the circumferential direction of the inner annular wall (14).

7. The air outlet cover assembly according to any one of claims 1 to 6, characterized in that: The inner annular wall (14) has a groove (141) that is recessed downward, and there are at least two grooves (141) that are spaced apart and distributed along the circumference of the inner annular wall (14).

8. The air outlet cover assembly according to any one of claims 1 to 6, characterized in that: When the air outlet cover (1) is in a non-air outlet state, the elastic sealing ring (4) abuts against the outer ring wall (15) and the air outlet smoke pipe (2).

9. A range hood, characterized in that: The invention comprises an air outlet hood assembly for a range hood as claimed in any one of claims 1 to 8.

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