Oil way structure of air outlet cover

Abstract

An air outlet cover oil way structure comprises a fan frame, an air outlet cover and a sealing gasket, an air outlet is formed in the fan frame, the bottom of the air outlet cover is installed on the air outlet, the sealing gasket is installed between the air outlet cover and the fan frame, the air outlet of the fan frame is obliquely arranged relative to the horizontal plane, and a first outer protruding part is arranged in the middle of the lowest edge of the air outlet cover. The sealing gasket wraps the peripheral wall of the bottom of the air outlet cover and is provided with a second outwards-protruding part matched with the first outwards-protruding part, a sealing gasket oil dripping hole is formed in the bottom of the second outwards-protruding part, a fan frame oil dripping hole is formed in the fan frame, and the fan frame oil dripping hole is located under the sealing gasket oil dripping hole. A sealing gasket of the oil way structure of the air outlet cover wraps the peripheral wall of the bottom of the air outlet cover, a sealing gasket oil dripping hole is formed in the bottom of a second outwards-protruding part of the sealing gasket, and a fan frame oil dripping hole in a fan frame is located under the sealing gasket oil dripping hole. Therefore, oil in the air outlet cover flows into the fan frame through the sealing gasket dripping hole and the fan frame oil dripping hole, and oil leakage is effectively avoided.

Description

Technical Field

[0001] The utility model relates to a range hood, in particular to an oil path structure of an air outlet hood of the range hood. Background Art

[0002] Existing range hoods are generally equipped with an air hood at the fan outlet, which has the function of gathering air and guiding the flow, and connecting the range hood and the air outlet pipe. At present, the fans of range hoods are all placed vertically, and the fan outlets are vertically facing upward. The conventional installation method of the air hood is to install it outside the fan frame, which is generally sealed by a gasket, and fixed with screws and buckles on the end face. It is also mostly installed in a vertical direction, so there is no oil accumulation problem at the interface of the air hood. For range hoods with tilted fans, the fan outlet is tilted, and the connection between the air hood and the fan outlet is also tilted. At this time, if a conventional gasket sealing structure is used, there is a risk of oil leakage in the air hood. The prior art discloses an oil circuit structure for an air outlet hood, such as the Chinese utility model patent No. 202221537499.6 (authorization announcement No. CN 217844016 U), which discloses "An air outlet hood mounting structure and a range hood using the mounting structure". The range hood forms an air outlet extending into the fan system on the air outlet hood, which can cooperate with the lower edge of the air outlet. This not only makes the air outlet hood an integrated structure at the connection with the fan frame, and does not leak oil at the connection, but also makes the oil circuit located in the fan frame. The patent solves the oil leakage problem of the horizontally arranged air outlet hood, and the oil circuit problem of the obliquely arranged air outlet hood needs to be improved accordingly. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an oil circuit structure of an air outlet hood which can avoid oil leakage of an air outlet hood placed obliquely in view of the above-mentioned existing technical status.

[0004] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: an air outlet cover oil circuit structure, comprising a fan frame, an air outlet cover and a sealing gasket, the fan frame is provided with a fan frame air outlet, the bottom of the air outlet cover is installed on the fan frame air outlet, and the sealing gasket is installed between the air outlet cover and the fan frame, and is characterized in that: the fan frame air outlet is arranged inclined relative to a horizontal plane, the middle part of the lowest edge of the air outlet cover has a first convex portion, the sealing gasket is wrapped on the outer peripheral wall of the bottom of the air outlet cover, the sealing gasket has a second convex portion matching the first convex portion, a sealing gasket oil dripping hole is provided at the bottom of the second convex portion, and a fan frame oil dripping hole is provided on the fan frame, and the fan frame oil dripping hole is located directly below the sealing gasket oil dripping hole.

[0005] Preferably, an oil-blocking rib is formed on the periphery of the air outlet of the fan frame, and the oil-blocking rib is arranged around the periphery of the sealing gasket. In this way, the oil-blocking rib can block the oil leaking from the sealing gasket, and the blocked oil can flow down from the oil dripping hole, thereby achieving double protection for the oil.

[0006] In order to install the air outlet cover and the sealing gasket on the fan frame, a mounting hole is opened in the area between the air outlet of the fan frame and the oil blocking rib, and the air outlet cover and the sealing gasket are installed on the fan frame through the mounting hole.

[0007] The sealing gasket can have a variety of structures. Preferably, the sealing gasket includes a sealing gasket body, which is annular and clamped between the bottom of the air outlet hood and the fan frame. The outer edge of the sealing gasket body extends upward to form an outer extension wall, and the outer extension wall is wrapped around the outer peripheral wall of the bottom of the air outlet hood.

[0008] Further preferably, the inner edge of the sealing gasket body extends upward to form an inner extension wall, and the inner extension wall is abutted against the inner peripheral wall of the bottom of the air outlet cover.

[0009] In order to allow the oil that breaks through the oil-blocking convex rib to flow into the fan frame, a fan frame oil leakage port is opened on the outer side of the oil-blocking convex rib, and the fan frame oil leakage port is lower than the fan frame oil dripping hole. In this way, triple protection is achieved for the oil, ensuring that the oil will not leak outside the fan frame.

[0010] In order to prevent oil from remaining on the fan frame, the fan frame has a horizontally arranged top plate and an inclined plate extending obliquely downward from the left edge or the right edge of the top plate, the fan frame air outlet is arranged on the inclined plate, and the fan frame oil leakage port is arranged at the lowest position of the inclined plate.

[0011] In order to improve the oil leakage effect, the fan rack has two oil leakage ports which are arranged at the front and rear sides of the oil dripping hole of the fan rack.

[0012] Further preferably, the air outlet of the fan frame is a square opening, and correspondingly, the air inlet of the air outlet cover is a square opening.

[0013] As a preferred embodiment of any of the above schemes, the air outlet direction of the air outlet of the air outlet cover is vertically upward.

[0014] Compared with the prior art, the advantages of the utility model are: the fan frame air outlet of the air outlet hood oil circuit structure is arranged obliquely relative to the horizontal plane, the middle part of the lowest edge of the air outlet hood has a first outer protrusion, the sealing gasket is wrapped on the outer peripheral wall of the bottom of the air outlet hood, and a sealing gasket oil dripping hole is opened at the bottom of the second outer protrusion of the sealing gasket, and a fan frame oil dripping hole is opened on the fan frame, and the fan frame oil dripping hole is located directly below the sealing gasket oil dripping hole, so that the oil in the air outlet hood flows into the interior of the fan frame through the sealing gasket dripping hole and the fan frame oil dripping hole, effectively preventing oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the oil circuit structure of the air outlet cover of an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the air outlet cover of an embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a fan rack according to an embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the sealing gasket of an embodiment of the utility model;

[0019] Figure 5 for Figure 1 A side view of the oil circuit structure shown;

[0020] Figure 6 for Figure 5 Structural cross-section view of part A. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] like Figures 1 to 6 As shown, the oil circuit structure of the air outlet cover 2 of this embodiment includes a fan frame 1, an air outlet cover 2 and a sealing pad 3. Figure 1 The direction indicated by the middle arrow B is right. The fan frame 1 has a horizontally arranged top plate 16 and an inclined plate 17 extending obliquely downward from the right edge of the top plate 16. The fan frame air outlet 11 is opened on the inclined plate 17, that is, the fan frame air outlet 11 is arranged obliquely relative to the horizontal plane, and the fan frame air outlet 11 is a square opening. A range hood 100 is installed inside the fan frame 1, and accordingly, the volute 101 of the range hood 100 is also arranged obliquely. The bottom of the air outlet hood 2 is installed on the fan frame air outlet 11, and the air inlet of the air outlet hood 2 is matched with the fan frame air outlet 11, that is, the air inlet of the air outlet hood 2 is also arranged obliquely, and the air inlet of the air outlet hood 2 is also a square opening. The air outlet direction of the air outlet of the air outlet hood 2 is vertically upward. Under the action of gravity, the oil inside the air outlet hood 2 flows along the inner wall of the air outlet hood 2 to the lowest point of the interface between the air outlet hood 2 and the fan frame 1.

[0023] The middle of the lowest edge of the air outlet cover 2 has a first outer protrusion 21, the sealing gasket 3 has a second outer protrusion 31 matched with the first outer protrusion 21, a sealing gasket oil dripping hole 32 is opened at the bottom of the second outer protrusion 31, and a fan frame oil dripping hole 12 is opened on the fan frame 1, and the fan frame oil dripping hole 12 is located directly below the sealing gasket oil dripping hole 32. The oil accumulates in the middle of the lowest edge of the air outlet cover 2, and the sealing gasket oil dripping hole 32 and the fan frame oil dripping hole 12 constitute the first layer of protection for the oil circuit, and the accumulated oil flows down through the sealing gasket oil dripping hole 32 and the fan frame oil dripping hole 12.

[0024] The sealing gasket 3 is installed between the air outlet cover 2 and the fan frame 1. The sealing gasket 3 includes a sealing gasket body 33. The sealing gasket body 33 is annular and is clamped between the bottom of the air outlet cover 2 and the fan frame 1. The sealing gasket 3 is wrapped around the outer peripheral wall of the bottom of the air outlet cover 2. Specifically, the outer edge of the sealing gasket body 33 extends upward to form an outer extension wall 34. The outer extension wall 34 is wrapped around the outer peripheral wall of the bottom of the air outlet cover 2 to prevent oil from flowing out. The inner edge of the sealing gasket body 33 extends upward to form an inner extension wall 35. The inner extension wall 35 is attached to the inner peripheral wall of the bottom of the air outlet cover 2.

[0025] An oil-blocking rib 13 is formed on the periphery of the fan frame air outlet 11, and the oil-blocking rib 13 is arranged around the periphery of the sealing gasket 3. A mounting hole 14 is opened in the area between the fan frame air outlet 11 and the oil-blocking rib 13, and the air outlet cover 2 and the sealing gasket 3 are mounted on the fan frame 1 through the mounting hole 14. The smoke-blocking rib 13 constitutes the second layer of protection for the oil circuit, and the oil-blocking rib can block the oil leaking from the sealing gasket, and the blocked oil can flow down from the sealing gasket oil drip hole 32 and the fan frame oil drip hole 12.

[0026] In this embodiment, a fan frame oil leakage port 15 is opened on the outer side of the oil blocking rib 13, the fan frame oil leakage port 15 is lower than the fan frame oil dripping hole 12, and is located at the lowest position of the inclined plate 17. There are two fan frame oil leakage ports 15 and they are arranged on the front and rear sides of the fan frame oil dripping hole 12. The fan frame oil leakage port 15 constitutes the third level of protection of the oil circuit to ensure that the oil will not leak to the outside of the fan frame 1.

[0027] 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 cover oil circuit structure, comprising a fan frame (1), an air outlet cover (2) and a sealing gasket (3), wherein the fan frame (1) is provided with a fan frame air outlet (11), the bottom of the air outlet cover (2) is mounted on the fan frame air outlet (11), and the sealing gasket (3) is mounted between the air outlet cover (2) and the fan frame (1), characterized in that: The fan frame air outlet (11) is arranged obliquely relative to a horizontal plane, the middle part of the lowest edge of the air outlet cover (2) has a first outer protrusion (21), the sealing gasket (3) is wrapped on the outer peripheral wall of the bottom of the air outlet cover (2), the sealing gasket (3) has a second outer protrusion (31) matched with the first outer protrusion (21), a sealing gasket oil dripping hole (32) is opened at the bottom of the second outer protrusion (31), a fan frame oil dripping hole (12) is opened on the fan frame (1), and the fan frame oil dripping hole (12) is located directly below the sealing gasket oil dripping hole (32).

2. The oil circuit structure of the air outlet cover according to claim 1, characterized in that: An oil-blocking rib (13) is formed on the outer periphery of the fan frame air outlet (11), and the oil-blocking rib (13) is arranged around the outer periphery of the sealing gasket (3).

3. The oil circuit structure of the air outlet cover according to claim 2, characterized in that: A mounting hole (14) is provided in the area between the air outlet (11) of the fan frame and the oil blocking rib (13), and the air outlet cover (2) and the sealing gasket (3) are mounted on the fan frame (1) through the mounting hole (14).

4. The oil circuit structure of the air outlet cover according to claim 3 is characterized in that: The sealing gasket (3) comprises a sealing gasket body (33), the sealing gasket body (33) is annular and is clamped between the bottom of the air outlet cover (2) and the fan frame (1), the outer edge of the sealing gasket body (33) extends upward to form an outer extension wall (34), and the outer extension wall (34) is wrapped around the outer peripheral wall of the bottom of the air outlet cover (2).

5. The oil circuit structure of the air outlet cover according to claim 4, characterized in that: The inner edge of the sealing pad body (33) extends upward to form an inner extension wall (35), and the inner extension wall (35) is in contact with the inner peripheral wall of the bottom of the air outlet cover (2).

6. The oil circuit structure of the air outlet cover according to claim 2, characterized in that: An oil leakage port (15) for the fan frame is formed on the outer side of the oil blocking rib (13), and the oil leakage port (15) for the fan frame is lower than the oil dripping hole (12) for the fan frame.

7. The oil circuit structure of the air outlet cover according to claim 6, characterized in that: The fan frame (1) comprises a horizontally arranged top plate (16) and an inclined plate (17) extending obliquely downward from a left edge or a right edge of the top plate (16); the fan frame air outlet (11) is arranged on the inclined plate (17); and the fan frame oil leakage port (15) is arranged at the lowest position of the inclined plate (17).

8. The oil circuit structure of the air outlet cover according to claim 7, characterized in that: The fan frame oil leakage ports (15) are two and are arranged at the front and rear sides of the fan frame oil dripping hole (12).

9. The oil circuit structure of the air outlet cover according to claim 1, characterized in that: The air outlet (11) of the fan frame is a square opening, and correspondingly, the air inlet of the air outlet cover (2) is a square opening.

10. The oil circuit structure of the air outlet cover according to any one of claims 1 to 9, characterized in that: The air outlet of the air outlet cover (2) is directed vertically upward.

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