Range hood

Abstract

The utility model relates to a range hood, which comprises: a housing having an oil smoke inlet and an oil smoke outlet, the oil smoke outlet being located on the top wall of the housing; the fan system is provided with an air inlet and an air outlet and is arranged in the shell, and the air outlet of the fan system faces upwards and is opposite to the lampblack outlet of the shell; an air outlet channel extending up and down is arranged in the air outlet cover, the air outlet cover is arranged above the machine shell, and the lower end of the air outlet cover is supported on the top wall of the machine shell and at the periphery of the oil smoke outlet and is in butt joint with an air outlet of the fan system; the part, located on the periphery of the air outlet cover, of the top wall of the machine shell is sunken downwards to form an annular oil collecting groove surrounding the air outlet cover, and a liquid leakage hole penetrating through the wall thickness is formed in the bottom wall of the annular oil collecting groove so as to be communicated with the inner space of the machine shell. Compared with the prior art, leaked oil can be collected.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and in particular relates to a range hood. Background Art

[0002] Most existing range hoods have an air outlet hood above the casing corresponding to the air outlet of the fan system. Specifically, the structure disclosed in the invention patent application "A Range Hood" with application number 201710923614.0 (application publication number CN109595633A) includes a smoke hood, a chassis arranged above the smoke hood, and a fan system arranged in the chassis. The smoke hood is provided with an air inlet, and an air duct is formed in the chassis. The fan system includes a first three-element fan and a second three-element fan arranged in parallel. A filter is provided at the bottom of the chassis and at the entrance of the air duct. The filter includes a filter body with an inverted cone shape that is small at the top and large at the bottom. The filter body is densely covered with mesh holes. An air outlet hood is provided at the air outlet of the fan system. When in use, oil smoke enters the smoke hood and is discharged after passing through the fan system and the air outlet hood in turn.

[0003] A sealing gasket is designed between the air outlet cover and the air outlet of the fan system of the existing range hood to prevent oil from leaking out of the casing. However, the sealing gasket is generally made of nitrile rubber, which is prone to sealing failure and oil leakage over time. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a range hood capable of collecting leaked oil in view of the current status of the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a range hood, comprising:

[0006] The casing has an oil fume inlet and an oil fume outlet, wherein the oil fume outlet is located on the top wall of the casing;

[0007] A fan system having an air inlet and an air outlet is arranged in the casing, and the air outlet faces upward and is opposite to the oil fume outlet of the casing;

[0008] An air outlet hood having an air outlet passage extending up and down inside is arranged above the housing, and the lower end of the air outlet hood is supported on the top wall of the housing, at a position outside the oil fume outlet, and docked with the air outlet of the fan system;

[0009] Features:

[0010] The portion of the top wall of the casing located at the periphery of the air outlet cover is recessed downward to form an annular oil collecting groove surrounding the air outlet cover, and the bottom wall of the annular oil collecting groove is provided with a leakage hole penetrating the wall thickness to communicate with the internal space of the casing.

[0011] In this way, when in use, the oil leakage from the joint between the air outlet cover and the air outlet of the fan system can be collected in the annular oil collecting groove, and introduced into the casing through the leakage hole under the action of the negative pressure in the casing, thereby realizing the collection and treatment of the leaked oil.

[0012] Preferably, the leakage hole of the annular oil collecting groove is directly connected to the inner space of the casing or is connected to the inner space of the casing through a drain pipe.

[0013] Preferably, the upper end of the drain pipe is connected to the leakage hole of the annular oil collecting tank, and the lower end is a free end and is relatively close to the air inlet of the fan system. In this way, when the fan system is working, the leaked oil in the annular oil collecting tank can be effectively introduced into the casing through the leakage hole and the drain pipe.

[0014] Preferably, the fan system is a centrifugal fan, whose air inlet is arranged forward, and the lower end of the drain pipe is located below the air inlet of the fan system. At this time, the lower end of the drain pipe is located at the lowest static pressure of the volute of the centrifugal fan.

[0015] Furthermore, the drain pipe is entirely located at the periphery of the air inlet of the fan system, so that the design of the drain pipe does not affect the normal operation of the fan system.

[0016] Preferably, at least the portion of the bottom wall of the annular oil collecting groove where the leakage hole is located is inclined downward, and the leakage hole is located at the lowest point of the bottom wall of the annular oil collecting groove. In this way, the leaked oil in the annular oil collecting groove can be collected at the leakage hole and discharged into the casing through the leakage hole.

[0017] In the above schemes, preferably, an annular cover plate is further included, which is arranged on the notch of the annular oil collecting groove. The cover plate can hide the annular oil collecting groove, improve the appearance of the whole machine, and at the same time, prevent foreign matter from entering the annular oil collecting groove.

[0018] Preferably, the cover plate includes two U-shaped plates, and the U-shaped openings of the two U-shaped plates are opposite to each other to form an annular body, so that the cover plate can be conveniently installed on the annular oil collecting tank.

[0019] In the above-mentioned schemes, preferably, the lower end edge of the air outlet cover is arranged corresponding to the inner ring side wall of the annular oil collecting groove.

[0020] Preferably, a fastener is also included, which passes through the mounting hole at the lower end of the air outlet cover and is connected to the top wall of the casing, and presses the lower end of the air outlet cover against the top wall of the casing. In this way, the design of the annular oil collecting groove does not affect the connection between the air outlet cover and the top wall of the casing, and the oil leaked at the connection can directly enter the annular oil collecting groove.

[0021] Preferably, the fasteners are screws, and there are multiple of them, which are arranged at intervals along the circumferential direction.

[0022] In order to further collect the leaked oil, preferably, an oil cup is also included, which is arranged at the bottom of the casing and is used to collect the oil in the casing.

[0023] Compared with the prior art, the utility model has the advantages that an annular oil collecting groove is arranged on the top wall of the casing at a position outside the air outlet hood, and a leakage hole penetrating the wall thickness is arranged on the bottom wall of the annular oil collecting groove to connect with the internal space of the casing. In this way, when in use, the oil leakage from the joint between the air outlet hood and the air outlet of the fan system can be collected in the annular oil collecting groove, and introduced into the casing through the leakage hole under the action of the negative pressure in the casing, thereby realizing the collection and treatment of the leaked oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0025] Figure 2 It is a three-dimensional exploded view of the local structure of the first embodiment of the utility model;

[0026] Figure 3 It is a cross-sectional view of the first embodiment of the utility model (the cross-section is a vertical plane extending front and back);

[0027] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0028] Figure 5 This is a schematic diagram of the structure of the top wall of the casing in the first embodiment of the utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the top wall of the housing in Embodiment 1 of the utility model from another perspective;

[0030] Figure 7 It is a partial structural diagram of the second embodiment of the utility model (the front side plate of the casing is omitted). DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] Embodiment 1:

[0033] like Figures 1 to 6 As shown, a preferred embodiment 1 of a range hood of the utility model is shown, and the range hood comprises a housing 1, a fan system 2, an air outlet cover 3, a cover plate 5, a fastener 6 and an oil cup 7.

[0034] The side of the range hood facing the user is the front side, the bottom wall of the housing 1 has an oil fume inlet 1a, and the top wall 10 of the housing 1 has an oil fume outlet 1b. The portion of the top wall 10 of the housing 1 located outside the oil fume outlet 1b is recessed downward to form an annular oil collecting groove 11, and the bottom wall of the annular oil collecting groove 11 is provided with a leakage hole 12 that penetrates the wall thickness. The leakage hole 12 is located at the rear side of the annular oil collecting groove 11, and the leakage hole 12 is directly connected to the internal space of the housing 1 (such as Figure 3 , 4 As shown). Figure 6 , 7 As shown, the portion of the bottom wall of the annular oil collecting groove 11 where the leakage hole 12 is located is inclined downward, and the leakage hole 12 is located at the lowest point of the bottom wall of the annular oil collecting groove 11.

[0035] The fan system 2 is a centrifugal fan, which is arranged in the casing 1 , and the air inlet 2a of the fan system 2 is arranged forward, and the air outlet 2b of the fan system 2 is upward and opposite to the oil fume outlet 1b of the casing 1 .

[0036] The air hood 3 has an air outlet passage extending up and down inside, and is arranged above the casing 1, and the lower end of the air hood 3 is supported on the top wall 10 of the casing 1, the outer periphery of the oil fume outlet 1b, and the inner periphery of the annular oil collecting groove 11, and docks with the air outlet 2b of the fan system 2. Specifically, the lower edge of the air hood 3 is arranged corresponding to the inner ring side wall 111 of the annular oil collecting groove 11, and the fastener 6 is a screw, which passes through the mounting hole at the lower end of the air hood 3 and is connected to the top wall 10 of the casing 1, and presses the lower end of the air hood 3 against the top wall 10 of the casing 1. There are multiple fasteners 6, which are arranged at intervals along the circumferential direction.

[0037] The cover plate 5 is disposed on the notch of the annular oil collecting groove 11 . Specifically, the cover plate 5 includes two U-shaped plates 50 , and the U-shaped openings of the two U-shaped plates 50 are opposite to each other to form an annular body and are located at the periphery of the air outlet cover 3 .

[0038] The oil cup 7 is disposed at the bottom of the housing 1 and is used to collect the oil in the housing 1. The oil cup is an existing oil cup structure and will not be described in detail herein.

[0039] In this way, when in use, the oil leakage from the joint between the air outlet hood 3 and the air outlet 2b of the fan system can be collected in the annular oil collecting groove 11, and introduced into the casing 1 through the leakage hole 12 under the action of the negative pressure generated by the fan system 2 in the casing 1, and then collected in the oil cup 7, thereby realizing the collection and treatment of the leaked oil.

[0040] Embodiment 2:

[0041] like Figure 7As shown, it is a preferred embodiment 2 of a range hood of the utility model, which is basically the same as the embodiment 1, except that the leakage hole 12 of the annular oil collecting groove 11 in the present embodiment is connected to the internal space of the housing 1 through the drain pipe 4. Specifically, the upper end of the drain pipe 4 is connected to the leakage hole 12 of the annular oil collecting groove 11, and the lower end is a free end, located below the air inlet 2a of the fan system 2, and relatively close to the air inlet 2a of the fan system 2. And the drain pipe 4 is located on the periphery of the air inlet 2a of the fan system 2 as a whole.

[0042] In this way, the leaked oil in the annular oil collecting groove 11 can enter the housing 1 through the drain pipe 4 .

[0043] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "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. A range hood, comprising: A casing (1) having an oil fume inlet (1a) and an oil fume outlet (1b), wherein the oil fume outlet (1b) is located on a top wall (10) of the casing (1); A fan system (2) having an air inlet (2a) and an air outlet (2b), which is arranged in the casing (1), and the air outlet (2b) faces upward and is opposite to the oil smoke outlet (1b) of the casing (1); An air outlet hood (3) having an air outlet passage extending upward and downward is arranged above the casing (1), and the lower end of the air outlet hood (3) is supported on the top wall (10) of the casing (1) at a position outside the oil fume outlet (1b), and is connected to the air outlet (2b) of the fan system (2); Features: The portion of the top wall (10) of the casing (1) located outside the air outlet cover (3) is recessed downward to form an annular oil collecting groove (11) surrounding the air outlet cover (3); the bottom wall of the annular oil collecting groove (11) is provided with a liquid leakage hole (12) penetrating the wall thickness so as to communicate with the internal space of the casing (1).

2. The range hood according to claim 1, characterized in that: The leakage hole (12) of the annular oil collecting groove (11) is directly connected to the internal space of the casing (1) or is connected to the internal space of the casing (1) through a drainage pipe (4).

3. The range hood according to claim 2, characterized in that: The upper end of the drain pipe (4) is connected to the leakage hole (12) of the annular oil collecting tank (11), and the lower end is a free end and is relatively close to the air inlet (2a) of the fan system (2).

4. The range hood according to claim 3, characterized in that: The fan system (2) is a centrifugal fan, whose air inlet (2a) is arranged forward, and the lower end of the drain pipe (4) is located below the air inlet (2a) of the fan system (2).

5. The range hood according to claim 4, characterized in that: The liquid discharge pipe (4) is entirely located outside the air inlet (2a) of the fan system (2).

6. The range hood according to claim 1, characterized in that: At least the portion of the bottom wall of the annular oil collecting groove (11) where the leakage hole (12) is located is inclined downward, and the leakage hole (12) is located at the lowest point of the bottom wall of the annular oil collecting groove (11).

7. The range hood according to any one of claims 1 to 6, characterized in that: It also includes an annular cover plate (5) which is arranged on the notch of the annular oil collecting groove (11).

8. The range hood according to claim 7, characterized in that: The cover plate (5) comprises two U-shaped plates (50), and the U-shaped openings of the two U-shaped plates (50) are opposed to each other to form an annular body.

9. The range hood according to any one of claims 1 to 6, characterized in that: The lower end edge of the air outlet cover (3) is arranged corresponding to the inner ring side wall (111) of the annular oil collecting groove (11).

10. The range hood according to claim 9, characterized in that: It also includes a fastener (6) which passes through a mounting hole at the lower end of the air outlet cover (3) and is connected to the top wall (10) of the casing (1), and presses the lower end of the air outlet cover (3) against the top wall (10) of the casing (1).

11. The range hood according to claim 10, characterized in that: The fasteners (6) are screws, of which there are a plurality and arranged at intervals along the circumferential direction.

12. The range hood according to any one of claims 1 to 6, characterized in that: It also includes an oil cup (7) which is arranged at the bottom of the casing (1) and is used to collect oil in the casing (1).

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