Air outlet cover for range hood

Abstract

The utility model relates to an exhaust hood, in particular to an exhaust hood for a range hood, which comprises a hood body, an exhaust hood cover, a fan and a fan cover, and is characterized in that the hood body is provided with an air inlet and an air outlet; the first connecting ring is detachably connected to the air outlet of the cover body and used for being connected with a smoke outlet pipe; the sealing structure is characterized in that the sealing structure further comprises a sealing piece which is arranged between the cover body and the first connecting ring, at least two first convex rings are arranged on the contact portion of the cover body and the sealing piece at intervals in the radial direction, and similarly, at least two second convex rings are arranged on the contact portion of the first connecting ring and the sealing piece at intervals in the radial direction. According to the air outlet cover for the range hood, the sealing piece is arranged between the cover body and the first connecting ring, the cover body is provided with the first convex ring, the first connecting ring is provided with the second convex ring, and when the cover body is connected with the first connecting ring, the first convex ring and the second convex ring can extrude the sealing piece; the cover body and the sealing piece can be tightly attached, the first connecting ring and the sealing piece can be tightly attached, and therefore the oil leakage phenomenon between the cover body and the first connecting ring is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to range hood technical field especially, relates to a range hood out air cover. BACKGROUND

[0002] Range hood is a kitchen appliance that purifies kitchen environment, is used to the waste of stove combustion and the oil fume that is harmful to human body in the cooking process is rapidly drawn away and is discharged outdoor, purifies kitchen air. The range hood out air cover is used for connecting the fan export of range hood and the out air pipe (the smoke pipe) part, generally including cover body and connecting ring, the cover body has the air inlet and the air outlet, the air inlet is used for connecting with the fan, the connecting ring is located at the air outlet of cover body, is used for connecting with the out air smoke pipe.

[0003] In order to facilitate the installation and disassembly of range hood, connecting ring and cover body are generally quick-release structure, such as patent number CN202121230268.6 (authorization announcement number CN215832004U) Chinese utility model patent "range hood out air cover" discloses the out air cover including cover body, connecting ring, locking sleeve and check valve piece, the cover body has the air inlet and the air outlet, wherein, the air inlet is used for connecting with the fan (specifically the air outlet of volute), the connecting ring is connected at the air outlet of cover body, is used for connecting the external smoke pipe;Locking sleeve is set on the outer circumferential surface of the outer ring wall of cover body, and can rotate along the circumference of outer ring wall and move along the axial direction of outer ring wall, when connecting ring is assembled to cover body, the end region of connecting ring is located in the outer ring wall, when locking sleeve is forwardly rotated and locked, locking sleeve is pressed by the first limit stop along the second limit stop of connecting ring on the end of outer ring wall;When the connecting ring needs to be disassembled, locking sleeve can be reversely rotated, and the pressing of the second limit stop of connecting ring is released.

[0004] The above patent realizes the quick installation and disassembly of connecting ring by rotating locking sleeve through the cooperation of first limit stop and second limit stop, but, the quick-release structure has the following problems in actual use: locking sleeve locking is prone to rotation out of position or the cooperation between first limit stop and second limit stop is loose during long time use, and the sealing between cover body and connecting ring is poor, thereby causing oil leakage. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem that the utility model is to provide a range hood out air cover for range hood that can avoid the phenomenon of oil leakage between cover body and connecting ring.

[0006] The utility model solves the technical problem that the utility model adopts the technical scheme that the range hood out air cover, including:

[0007] The cover body has an air inlet for connecting with a fan and an air outlet;

[0008] The first connecting ring is detachably connected at the air outlet of the cover body for connecting with a flue pipe; and the application further comprises:

[0009] The sealing member is arranged between the cover body and the first connecting ring, and at least two first convex rings are arranged radially at the contact part of the cover body and the sealing member, and at least two second convex rings are arranged radially at the contact part of the first connecting ring and the sealing member.

[0010] In order to further improve the sealing performance of the sealing member, preferably, the sealing member is a sealing ring, and the inner and outer circumferential parts of the lower surface of the sealing ring are provided with convex edges in the shape of "Λ".

[0011] Preferably, the sealing member and the convex edges are flexible members.

[0012] In order to realize the quick disassembly of the cover body and the first connecting ring, preferably, at least two buckles are arranged circumferentially on one of the cover body and the first connecting ring, and at least two buckling holes matched with the buckles are arranged circumferentially on the other one.

[0013] In order to facilitate the assembly of the buckles and the buckling holes, preferably, the buckling hole comprises an opening end and a limiting end, the limiting end is arranged at the bottom of the opening end and extends circumferentially, so that the buckle can be inserted into the buckling hole from the opening end and inserted into the limiting end by rotating the first connecting ring or the cover body.

[0014] The positions of the buckles and the buckling holes can be different, for example, the buckles are arranged on the outer side of the first connecting ring, and the buckling holes are arranged on the first circumferential wall of the cover body.

[0015] Alternatively, the buckles are arranged on the inner side of the first circumferential wall of the cover body, and the buckling holes are arranged on the first connecting ring.

[0016] In order to facilitate the installation of the cover body and the first connecting ring, preferably, a second connecting ring is further included, which is connected to the inner side of the peripheral wall and forms a first annular groove together with the peripheral wall, and the first connecting ring extends an extension part axially close to the first end part of the cover body, and the extension part is inserted into the first annular groove. In this way, not only is the installation of the cover body and the first connecting ring facilitated and the inclination of the first connecting ring during installation avoided, but also the gap between the two is reduced, further avoiding the occurrence of oil leakage.

[0017] In order to facilitate the installation of the smoke pipe, preferably, the first connecting ring has a second annular groove open in the direction away from the cover body on the side away from the second end part of the cover body, and the lower end part of the smoke pipe is inserted into the annular groove and detachably connected with the outer annular groove side wall of the second annular groove. During installation, the positioning of the smoke pipe is facilitated by inserting the lower end of the smoke pipe into the annular groove, and the installation of the smoke pipe can be completed by fixing the smoke pipe on the first connecting ring through screws or adhesive tapes.

[0018] Compared with the prior art, the advantages of the oil fume extractor are as follows: the air outlet cover of the oil fume extractor is provided with a sealing element between the cover body and the first connecting ring, a first convex ring is arranged on the cover body, a second convex ring is arranged on the first connecting ring, and when the cover body and the first connecting ring are connected, the first convex ring and the second convex ring can extrude the sealing element, so that the cover body and the sealing element and the first connecting ring and the sealing element can be tightly attached, thereby avoiding the occurrence of oil leakage between the cover body and the first connecting ring. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the embodiment of the utility model;

[0020] Figure 2 It is an exploded view of the embodiment of the utility model;

[0021] Figure 3 It is a sectional view of the embodiment of the utility model;

[0022] Figure 4 It is Figure 3 It is an enlarged view of A in the middle;

[0023] Figure 5 It is Figure 3 It is an enlarged view of B in the middle;

[0024] Figure 6 It is a sectional view of the sealing element in the embodiment of the utility model. DETAILED DESCRIPTION

[0025] The utility model will be described in further detail below in combination with the embodiment of the drawings.

[0026] As Figures 1-6As shown, the air outlet cover of the range hood of the embodiment comprises a cover body 1, a first connecting ring 2 and a sealing member 4.

[0027] The cover body 1 has an air inlet 11 and an air outlet 12, and the air inlet 11 is used to connect with the fan.

[0028] The first connecting ring 2 is detachably connected at the air outlet 12 of the cover body 1 and is used to connect with the smoke pipe 3. Figures 1-2 The cover body 1 and the first connecting ring 2 are circumferentially spaced apart, one of which is provided with at least two buckles 22, and the other is provided with at least two buckle holes 14 matched with the buckles 22, so as to realize quick disassembly of the cover body 1 and the first connecting ring 2. The buckle hole 14 comprises an open end and a limiting end, and the limiting end is arranged at the bottom of the open end and extends circumferentially, so that the buckle 22 can be inserted into the buckle hole 14 from the open end and inserted into the limiting end by rotating the first connecting ring 2 or the cover body 1. When installed, the first connecting ring 2 can be connected with the cover body 1 by rotating a small angle, avoiding the twisting of the upper smoke pipe caused by the rotation connection, which affects the exhaust effect. Specifically, in the embodiment, the buckle 22 is arranged on the outer side of the first connecting ring 2, and the buckle hole 14 is arranged on the first peripheral wall 15 of the cover body 1.

[0029] The sealing member 4 is a flexible member, and the sealing member 4 is a sealing ring arranged between the cover body 1 and the first connecting ring 2. Figures 3-4 The contact part of the cover body 1 and the sealing member 4 is radially spaced apart and provided with at least two first convex rings 13, and the contact part of the first connecting ring 2 and the sealing member 4 is radially spaced apart and provided with at least two second convex rings 21. The arrangement of the first convex ring 13 and the second convex ring 21 makes the sealing member 4 and the cover body 1 and the sealing member 4 and the first connecting ring 2 closely fit, so as to prevent oil smoke from overflowing in the gap between them. Figure 6 The inner and outer circumferential parts of the lower surface of the sealing member 4 are provided with flexible convex edges 41 in the shape of "Λ", so that the compression amount of different positions of the sealing member 4 is different, the sealing member 4 and the air outlet cover and the sealing member 4 and the first connecting ring 2 are more closely matched, so as to improve the sealing performance of the sealing member 4 and further avoid the phenomenon of oil leakage.

[0030] In addition, referring to Figure 2 and Figure 4 The air outlet cover of the range hood of the embodiment further comprises a second connecting ring 5, which is connected to the inner side of the peripheral wall 15 and surrounds the first annular groove 51 with the peripheral wall 15. The first end of the first connecting ring 2 extends an extension 23 axially close to the cover body 1, and the extension 23 is inserted into the first annular groove 51. This design not only facilitates the installation of the cover body and the first connecting ring, avoids the inclination of the first connecting ring during installation, but also reduces the gap between them, further avoiding the phenomenon of oil leakage. In order to facilitate the installation of the smoke pipe 3, referring to Figure 5The first connecting ring 2 has a second annular groove 25 which is open to the direction away from the cover 1 at the side away from the second end 24 of the cover 1, and the lower end of the smoke pipe 3 is inserted into the second annular groove 25 and detachably connected with the outer annular groove side wall 251 of the second annular groove 25. During installation, the lower end of the smoke pipe 3 is inserted into the second annular groove 25, which facilitates the positioning of the smoke pipe 3, and also facilitates the installation and fixation of the smoke pipe 3 with the first connecting ring 2.

Claims

1. An air outlet cover for an extractor hood, comprising: a cover body (1) having an air inlet (11) for connecting with a fan and an air outlet (12); a first connecting ring (2) detachably connected at the air outlet (12) of the cover body (1) for connecting with a flue (3); characterized in that further comprising: a sealing member (4) arranged between the cover body (1) and the first connecting ring (2), a contact portion of the cover body (1) and the sealing member (4) being provided with at least two first convex rings (13) radially spaced apart, and a contact portion of the first connecting ring (2) and the sealing member (4) being provided with at least two second convex rings (21) radially spaced apart. The sealing member (4) is a sealing ring, and an inner circumferential portion and an outer circumferential portion of a lower surface of the sealing ring are provided with a "Λ" shaped convex edge (41). The sealing member (4) and the convex edge (41) are flexible members. One of the cover body (1) and the first connecting ring (2) is provided with at least two buckles (22) circumferentially spaced apart, and the other is provided with at least two buckle holes (14) circumferentially spaced apart and matched with the buckles (22).

2. The out-casing for a range hood according to claim 1, characterized in that: The buckle hole (14) comprises an opening portion (141) and a limiting portion (142), the limiting portion (142) is arranged at the bottom of the opening portion (141) and extends circumferentially, so that the buckle (22) can extend into the buckle hole (14) from the opening portion (141) and be inserted into the limiting portion (142) by rotating the first connecting ring (2) or the cover body (1).

3. The out-casing for a range hood according to claim 2, characterized in that: The buckle (22) is arranged on the outer side of the first connecting ring (2), and the buckle hole (14) is arranged on the circumferential wall (15) of the cover body (1).

4. The out-casing of claim any one of claims 1-3, characterized in that: Alternatively, the buckle (22) is arranged on the inner side of the circumferential wall (15) of the cover body (1), and the buckle hole (14) is arranged on the first connecting ring (2).

5. The range hood air outlet cover according to claim 4, characterized in that: Further comprising a second connecting ring (5) connected on the inner side of the circumferential wall (15) and surrounding the circumferential wall (15) to form a first annular groove (51), and the first connecting ring (2) extends an extension (23) axially at a first end portion close to the cover body (1), and the extension (23) is inserted into the first annular groove (51).

6. The range hood air outlet cover according to claim 5, characterized in that: The first connecting ring (2) has a second annular groove (25) open to the direction away from the cover body (1) at a second end portion (24) away from the cover body (1), and a lower end portion of the flue (3) is inserted into the second annular groove (25) and detachably connected with an outer annular groove side wall (251) of the second annular groove (25). ​ 7. The range hood air outlet cover according to claim 6, characterized in that: ​ 8. The hood according to any one of claims 1-3, characterized in that: ​

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