Oil collecting device of range hood and range hood

Abstract

The utility model discloses an oil collecting device of range hood and range hood, and the oil collecting device of range hood includes oil collecting box, and it includes the box body of top open and the perforation of setting at the bottom of box body, and the oil discharging device is set on the oil collecting box, the oil discharging device includes: first oil discharging part, at least partial setting in the box body has the first oil discharging port of the oil liquid in oil collecting box downwardly discharging, second oil discharging part includes the oil discharging channel of setting below the first oil discharging port of first oil discharging part, and the bottom of oil discharging channel is second oil discharging port, and third oil discharging part sets below second oil discharging part and can receive the oil liquid of first oil discharging part, second oil discharging part flow, third oil discharging part is rotatably connected with second oil discharging part to open and close second oil discharging port.

Description

Technical Field

[0001] This utility model relates to an oil fume purification device, and more particularly to an oil collection device for a range hood, and a range hood using the oil collection device. Background Technology

[0002] Range hoods have become an indispensable kitchen appliance in modern homes.

[0003] Existing range hoods typically use several oil drain holes on the bottom plate of the hood housing. Waste oil flows through these holes into an oil collection box hanging below the bottom plate, which collects the waste oil and is periodically emptied. This method has the following problems: ① High cost: The entire sheet metal oil box is the same length as the width of the range hood body, resulting in high material and processing costs; ② Invisibility: The amount of oil in the oil collection box is not visible, and it will overflow if not cleaned for a long time; ③ Inconvenient oil emptying: Waste oil is very likely to spill when moving the oil box with both hands; ④ Improper waste oil disposal: Waste oil is usually poured into the sink, and the grease can easily clog the drain pipes.

[0004] To address the aforementioned issues, the applicant has made improvements. Referring to Chinese Patent Application No. 202010265399.1, an oil collection structure is disclosed, comprising an oil collection body with an open upper end and an oil discharge device. The oil discharge device includes a flexible tube installed inside the oil collection body. The flexible tube is hollow with openings at both the upper and lower ends. The oil discharge device also includes a connector capable of pulling down the upper end of the flexible tube to discharge waste oil from the oil collection body. The bottom of the oil collection body has mounting holes for the flexible tube and connector to pass through.

[0005] However, this oil collection structure requires a separate liquid level detection mechanism to detect the oil level in the oil cup. The structure is complex and costly. If not handled in time, the oil will drip directly. In addition, its flexible tube is hollow and nearly cylindrical. When the oil is stored, the oil pressure is the greatest at the bottom and gradually decreases upward, causing the bottom of the flexible tube to be under the greatest force and sink inward. When oil needs to be drained, the flexible tube cannot be pulled down smoothly, and normal oil drainage cannot be achieved. Utility Model Content

[0006] The first technical problem to be solved by this utility model is to provide an oil collection device for a range hood that addresses the shortcomings of the existing technology and prevents oil from dripping directly when the range hood is full.

[0007] The second technical problem to be solved by this utility model is to provide a range hood that uses the above-mentioned oil collection device.

[0008] The technical solution adopted by this utility model to solve the first technical problem mentioned above is: an oil collection device for a range hood, comprising:

[0009] An oil collection box, comprising an open-topped box body and a perforation at the bottom of the box body; and

[0010] An oil draining device is installed on the oil collection box;

[0011] Its features are:

[0012] The oil discharge device includes:

[0013] The first oil drain component is at least partially disposed inside the box and has a first oil drain port for draining the oil in the oil collection box downwards.

[0014] The second oil discharge component includes an oil discharge channel disposed below the first oil discharge port of the first oil discharge component, the bottom of the oil discharge channel being the second oil discharge port; and

[0015] The third oil drain is located below the second oil drain and can receive the oil flowing down from the first and second oil drains. The third oil drain is rotatably connected to the second oil drain, thereby enabling the second oil drain port to be opened and closed.

[0016] By connecting the third and second oil drain components, the oil drain port can be opened and closed, which can prevent the oil from dripping directly when it is full (exceeding the preset warning line) and can also be opened easily when the oil needs to be drained to ensure smooth drainage.

[0017] According to one aspect of the present invention, the third oil outlet component is rotatably connected to the second oil outlet component via a laterally extending rotating shaft. The third oil outlet component is provided with a counterweight, and the counterweight and the second oil outlet are respectively disposed on opposite sides of the rotating shaft, so that the third oil outlet component maintains the tendency to close the second oil outlet.

[0018] The weight of the counterweight can be used to keep the second oil drain port closed, and when the force exceeds the counterweight, the second oil drain port can be automatically opened for easy oil drainage without manual operation.

[0019] According to another aspect of the present invention, a first magnet is provided on the second oil discharge component, and a second magnet is provided on the third oil discharge component, so that the third oil discharge component maintains the tendency to close the second oil discharge port.

[0020] The second oil drain port can be kept closed by magnetic attraction, and can be automatically opened when the magnetic attraction is exceeded, making it easy to drain oil without manual operation.

[0021] Furthermore, the portion of the third oil outlet corresponding to the second oil outlet has a downwardly recessed oil catcher groove, which can be used to catch a certain amount of oil.

[0022] Furthermore, the first oil drain component includes a first part and a second part. The first part is disposed inside the box and is a hollow shape made of elastic material. The edge of the first part is directly or indirectly fixed to the part of the box located at the perforation edge. The second part extends downward from the top of the first part and is a hollow tube with openings at both the top and bottom. The first part is arched upward in its natural state and can deform downward after the second part is pulled down.

[0023] Therefore, the elastic deformation capacity of the first part can be utilized to directly pull the second part (through the second oil discharge component) during oil discharge, thereby deforming the first part downward and lowering its top position, so that a large amount of oil can be discharged from the second and third oil discharge components.

[0024] Preferably, the first part is a hemispherical shape that arches upward in its natural state.

[0025] By making the first part deformable and maintaining a hemispherical shape under normal oil storage conditions, it can be evenly stressed, avoiding the problem of localized stress causing collapse and inability to pull down. This allows it to be pulled down normally when oil needs to be drained, ensuring normal use at all times.

[0026] Furthermore, to prevent the first oil draining component from detaching from the oil collection box during deformation, the first oil draining component also includes a fixing part located at the bottom of the first part, the fixing part being inserted into the perforation and directly or indirectly fixed to the box body.

[0027] Furthermore, the oil draining device also includes a first connector and a second connector. The first connector includes a connecting portion and an annular flange extending outward from the bottom of the connecting portion. The connecting portion passes through the through hole and is located on the outer periphery of the first oil draining component. The connecting portion is threadedly connected to the fixing portion, thereby connecting the first oil draining component and the first connector.

[0028] The second connector is annular and located on the outer periphery of the connecting portion of the first connector. The second connector is placed at the bottom of the box. The outer periphery of the portion of the connecting portion of the first connector located inside the box is threadedly connected to the second connector, thereby fixing the position of the first connector.

[0029] Therefore, the position of the first oil-filled component can be fixed to prevent it from shifting when pulled down.

[0030] Furthermore, to prevent oil from leaking out from the connection between the first connector, the second connector, and the first oil drain, the oil collection box also includes a downwardly recessed step formed at the bottom of the box body, and the perforation is opened in the step.

[0031] The oil draining device also includes a pad, the cross-section of which is U-shaped. The stepped portion enters the pad from the U-shaped opening side. The pad is also in contact with the bottom surface of the second connector, the outer peripheral wall surface of the connecting part of the first connector located below the second connector, and the upper surface of the flange of the first connector.

[0032] Furthermore, the oil collecting device also includes a collecting bottle, which can be threadedly connected to the second oil discharge component, and the bottle opening is located on the outer periphery of the third oil discharge component.

[0033] Therefore, when oil needs to be drained, a collection bottle can be connected to a second oil draining device to drain the oil, making it convenient to use discarded plastic bottles.

[0034] The technical solution adopted by this utility model to solve the second technical problem mentioned above is: a range hood, characterized in that: it applies the oil collection device as described above.

[0035] Compared with the prior art, the advantages of this utility model are: by setting the connection between the third oil drain component and the second oil drain component, the oil drain port can be opened and closed, which can prevent the oil from dripping directly when it is full (exceeding the preset warning line), and can also be opened conveniently when the oil needs to be drained to ensure smooth drainage. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the oil collection device according to the first embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the oil collecting device according to the first embodiment of the present invention (and...). Figure 1 (Different perspectives);

[0038] Figure 3 This is a schematic diagram of the oil collection box of the oil collection device according to the first embodiment of this utility model;

[0039] Figure 4 This is a cross-sectional view of the oil collecting device according to the first embodiment of this utility model;

[0040] Figure 5 This is an exploded view of the oil discharge device of the oil collection device according to the first embodiment of this utility model;

[0041] Figure 6 This is a schematic diagram showing the oil collection device of the first embodiment of the present invention with the first oil discharge component hidden.

[0042] Figure 7 This is an exploded structural diagram of the oil collection device of the first embodiment of the present invention, showing the hidden first oil discharge component.

[0043] Figure 8This is a partial cross-sectional view of the oil collection device in the first embodiment of the present invention, showing the oil level indicator.

[0044] Figure 9 This is a partial cross-sectional view (connected to the collection bottle) of the oil collection device in the oil discharge state according to the first embodiment of this utility model;

[0045] Figure 10 This is a schematic diagram of the range hood according to the first embodiment of the present utility model;

[0046] Figure 11 This is a partial cross-sectional view of the oil collection device according to the second embodiment of the present invention. Detailed Implementation

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0048] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration 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. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0049] Example 1

[0050] See Figures 1-9 An oil collection device for a range hood includes an oil collection box 1 and an oil discharge device 2. The oil collection box 1 can be a box independent of the range hood's casing, or it can be the bottom plate of the range hood's casing. See [reference needed]. Figure 10 In this embodiment, the bottom plate of the box is used as the oil collection box 1. The specific structure is as disclosed in Embodiment 2 of Chinese Patent Application No. 202010265399.1 in the background art, which can avoid the repetitive design of the oil cup and reduce the cost.

[0051] The oil draining device 2 is installed on the oil collection box 1. The oil collection box 1 includes a box body 11 with an open top and a stepped portion 12 formed at the bottom of the box body 11. The stepped portion 12 is recessed downward relative to the bottom of the box body 11. The stepped portion 12 can be circular. A through hole 13 is provided on the stepped portion 12. The oil draining device 2 is installed at the through hole 13. The through hole 13 can also be circular.

[0052] The oil discharge device 2 includes a first oil discharge component 21, a second oil discharge component 22, a third oil discharge component 23, a first connecting component 24, a second connecting component 25, and a pad 26.

[0053] The first oil drain component 21 includes a hollow, upwardly arched first portion 211, which is disposed inside the housing 11. The oil drain component 24 also includes a second portion 212 extending downward from the top of the first portion 211. The second portion 212 is a hollow tube with an open top, forming an oil guide tube. The bottom of the second portion 212 is circular, and a first oil drain port 213 is provided on it. The bottom of the second portion 212 is located around the first oil drain port 213, forming an oil guide section 2121. The oil guide section 2121 gradually slopes downward from the periphery towards the first oil drain port 213 in the center, thereby guiding the oil flowing down the wall of the second portion 212 to the first oil drain port 213.

[0054] The first part 211 can be dome-shaped, hemispherical, etc., and can withstand great pressure. Preferably, in a spherical shape, the force is evenly distributed in all directions when applied to any part, making the sphere more robust than any other shape and preventing collapse or deformation under normal oil storage conditions. The first part 211 is made of an elastic, deformable material, such as rubber.

[0055] The first oil drain component 21 also includes a fixing portion 215 located at the bottom of the first part 211. The first part 211, the second part 212, and the fixing portion 215 can be integrally formed. The fixing portion 215 passes through the through hole 13, and its outer peripheral wall is formed with a first external thread 214. The first connecting component 24 includes a connecting portion 241 and an annular flange 242 extending outward from the bottom of the connecting portion 241. The connecting portion 241 is generally cylindrical, and the flange 242 extends radially outward from the bottom of the connecting portion 241. The connecting portion 241 passes through the through hole 13 and is located on the outer periphery of the first oil drain component 21. The inner peripheral wall of the connecting portion 241 is formed with a first internal thread 243. The first external thread 214 and the first internal thread 243 mate to connect the first oil drain component 21 and the first connecting component 24. The bottom of the first oil drain component 21 and the bottom of the first connecting component 24 can be flush.

[0056] The second connector 25 is annular and is supported on the step portion 12. It is located on the outer periphery of the connecting portion 241 of the first connector 24. The inner peripheral wall of the second connector 25 has a second internal thread 251. The outer peripheral wall of the portion of the connecting portion 241 of the first connector 24 that is higher than the step portion 12 has a second external thread 244. The second internal thread 251 and the second external thread 244 cooperate to fix the position of the first connector 24.

[0057] The pad 26 has a U-shaped cross-section, with the stepped portion 12 extending into the pad 26 from the U-shaped opening side. The pad 26 also fits against the bottom surface of the second connector 25, the outer peripheral wall surface of the connecting portion 241 of the first connector 24 located below the second external thread 244, and the upper surface of the flange 242 of the connecting portion 241. When the threads of the first connector 24 and the second connector 25 are locked, the pad 26 and the stepped portion 12 are interference-fitted, ensuring that oil does not leak from the inner peripheral edge of the stepped portion 12.

[0058] The second oil outlet component 22 includes a hollow cylindrical third portion 221 and a hollow cylindrical fourth portion 222, the fourth portion 222 being at least partially spaced around the outer periphery of the third portion 221. The third portion 221 is threadedly connected to the outer periphery of the second portion 241 of the first oil outlet component 21. In the oil-storage state, the upper end of the fourth portion 222 is lower than the lower end of the third portion 221. The third portion 221 and the fourth portion 222 are formed by two-material injection molding. A connecting section 223 is provided between the lower end of the third portion 221 and the upper end of the fourth portion 222. The connecting section 223 is made of an elastic, deformable material, such as rubber. In the oil-storage state, the connecting section 223 is a downwardly convex arch shape.

[0059] The second oil discharge component 22 further includes a first extension 224, a second extension 225, and a third extension 226. The first extension 224 is formed by extending radially inward from the lower end of the fourth portion 222. The second extension 225 is formed by extending downward from the inner end of the first extension 224. The third extension 226 is formed by extending downward from the bottom surface of the first extension 224. They are spaced apart on the outer periphery of the second extension 225. The space enclosed by the second extension 225 constitutes an oil discharge channel 229. The bottom of the oil discharge channel 229 is a second oil discharge port 227, and the oil discharge channel 229 is opposite to the first oil discharge port 213.

[0060] The bottom surface of the first extension 224 extends downward to form a bracket 228. The third oil drain component 23 is rotatably connected to the bracket 228 via a rotating shaft 231, thereby opening and closing the second oil drain port 227. A counterweight 27 is provided on the third oil drain component 23, which is respectively positioned on opposite sides of the rotating shaft 231, corresponding to the second oil drain port 227, so that the third oil drain component 23 tends to close the second oil drain port 227. A downwardly recessed oil catch groove 232 is formed on the portion of the third oil drain component 23 corresponding to the second oil drain port 227. In the normal installation state, the rotating shaft 231 extends laterally, especially horizontally.

[0061] The inner peripheral wall of the third extension 226 can be threaded, allowing it to be threadedly connected to the neck of a collection bottle 3, the neck of which can be located on the outer periphery of the second extension 225. The collection bottle 3 can be an ordinary mineral water bottle, thus utilizing the mineral water bottle to collect waste oil.

[0062] Under normal oil storage conditions, the bottoms of the second oil row component 22 and the third oil row component 23 can be flush with the first oil row component 21.

[0063] When the oil level in the oil collection box 1 is higher than the top of the first oil drain component 21, the oil will fall into the oil catcher 232 along its second part 212, the first oil drain port 213, the oil drain channel 229, and the second oil drain port 227. As the oil accumulates, the overall weight of the second and third oil drain components 22 and 23 increases. Assuming the rebound force of the inverted spherical connecting section 223 is F, when the sum of the weight G1 of the part of the second oil drain component 23 connected to the connecting section 223 and the weight G2 of the oil accumulated in the oil catcher 232 exceeds F, the connecting section 223 is pulled down, causing the second and third oil drain components 22 and 23 to protrude downwards from the first oil drain component 21. (See also...) Figure 8 The system triggers a full-fill warning when the liquid level reaches a preset warning position. Simultaneously, the weight G3 of the counterweight 27 must be greater than the weight G2 of the accumulated oil in the oil collection trough. This means that when the second and third oil collection components 22 and 23 are pulled down, the oil collection trough 232 will not tip over and spill oil. Because the second and third oil collection components 22 and 23 are pulled down, users standing at the operating position of the range hood can easily notice a mechanism protruding from the bottom of the range hood. By observing this mechanism, they can see waste oil in the oil collection trough 232 (which makes the third oil collection component 23 transparent), thus reminding the user that the range hood is full and needs to be emptied. This achieves a low-cost, simple, and direct oil-filling reminder.

[0064] Optionally, in the above-mentioned liquid full reminder state, taking the counterweight 27 with a mass of 40 grams, the lever arm length of the center line from the counterweight 27 to the rotating shaft 231 of 2.5 mm, and the distance from the center point of the oil reservoir 232 to the center line of the rotating shaft 231 of 10 mm as an example, the weight of the third connecting piece 23 itself is negligible. According to the lever balance principle, the oil accumulation in the oil reservoir 232 does not exceed 10 grams. Each drop of oil is calculated at 0.05 grams. When the oil accumulation in the oil reservoir 232 does not exceed 200 drops, the third oil drain piece 23 will not open, and this weight is sufficient to remind the user.

[0065] Subsequently, the collection bottle 3 is connected to the third extension 226 of the second oil outlet 22, and pulled downwards with force. This causes the first part 211 of the first oil outlet 21 to deform and move downwards. At this point, the oil level is higher than the top of the first part 211, and a large amount of oil rushes into the second oil outlet 22 and the third oil outlet 23, which will push open the third oil outlet 23. (See below) Figure 9 Thus, it flows into collection bottle 3.

[0066] After the oil is drained, the collection bottle 3 is removed by rotating it in the opposite direction. Under the elastic force of the first part 211 of the first oil drain component 21 and the connecting section 223 of the second oil drain component 22, the two oil drain components gradually return to their original positions. Under the force of the counterweight 27, the third oil drain component 23 flips upward and closes. The second oil drain component 22 and the third oil drain component 23 return to their hidden state (not exposed to the first oil drain component 21). The user in the operating position cannot see the internal oil draining structure, and it does not have any negative impact on the appearance of the range hood.

[0067] Considering different user habits, hooks 28 can also be installed around the outer perimeter of the second row of oil fittings 22. Using plastic bags that are easier to find at home to hang and pull down can also achieve the effect of dumping waste oil.

[0068] Alternatively, the first oil drain component 21 and the second oil drain component 22 can be made into a single unit, and the connecting section 223 of the second oil drain component 22 does not need to be set when the user does not need a full liquid reminder.

[0069] Example 2

[0070] See Figure 11 In this embodiment, unlike Embodiment 1, the counterweight 27 is replaced by a first magnet 291 on the second oil drain component 22 and a second magnet 292 on the third oil drain component 23. The magnetic attraction force K satisfies K > the weight of the oil accumulating in the oil tank G2, thus achieving the full-liquid-reminder state. During reset, the third oil drain component 23 resets under the action of the magnetic attraction force.

Claims

1. An oil collection device for a range hood, comprising: The oil collection box (1) includes a box body (11) with an open top and a perforation (13) at the bottom of the box body (11); as well as An oil draining device (2) is installed on an oil collection box (1); Its features are: The oil discharge device (2) includes: The first oil drain component (21) is at least partially disposed inside the housing (11) and has a first oil drain port (213) for draining the oil in the oil collection box (1) downwards. The second oil discharge component (22) includes an oil discharge channel (229) disposed below the first oil discharge port (213) of the first oil discharge component (21), the bottom of the oil discharge channel (229) being the second oil discharge port (227); and The third oil outlet (23) is located below the second oil outlet (22) and can receive the oil flowing down from the first oil outlet (21) and the second oil outlet (22). The third oil outlet (23) is rotatably connected to the second oil outlet (22), thereby enabling the second oil outlet (227) to be opened and closed.

2. The oil collection device of the range hood according to claim 1, characterized in that: The third oil outlet component (23) is rotatably connected to the second oil outlet component (22) via a laterally extending rotating shaft (231). The third oil outlet component (23) is provided with a counterweight (27). The counterweight (27) and the second oil outlet (227) are respectively arranged on opposite sides of the rotating shaft (231), so that the third oil outlet component (23) maintains the tendency to close the second oil outlet (227).

3. The oil collection device of the range hood according to claim 1, characterized in that: The second oil drain component (22) is provided with a first magnet (291), and the third oil drain component (23) is provided with a second magnet (292), so that the third oil drain component (23) tends to close the second oil drain port (227).

4. The oil collection device of the range hood according to any one of claims 1 to 3, characterized in that: The portion of the third oil outlet (23) corresponding to the second oil outlet (227) has a downwardly recessed oil catch groove (232).

5. The oil collection device of the range hood according to any one of claims 1 to 3, characterized in that: The first oil drain component (21) includes a first part (211) and a second part (212). The first part (211) is disposed inside the box body (11). The first part (211) is a hollow shape made of elastic material. The edge of the first part (211) is directly or indirectly fixed to the part of the box body (11) located at the edge of the perforation (13). The second part (212) extends downward from the top of the first part (211). The second part (212) is a hollow tube with openings at both the top and bottom. The first part (211) is arched upward in its natural state and can deform downward after the second part (212) is pulled down.

6. The oil collection device of the range hood according to claim 5, characterized in that: The first part (211) is a hemispherical shape that arches upward in its natural state.

7. The oil collection device of the range hood according to claim 5, characterized in that: The first oil draining component (21) also includes a fixing part (215) located at the bottom of the first part (211), the fixing part (215) passing through the perforation (13) and being directly or indirectly fixed to the box body (11).

8. The oil collection device of the range hood according to claim 7, characterized in that: The oil draining device (2) further includes a first connector (24) and a second connector (24). The first connector (24) includes a connecting portion (241) and an annular flange (242) extending outward from the bottom of the connecting portion (241). The connecting portion (241) is inserted into the through hole (13) and located on the outer periphery of the first oil draining member (21). The connecting portion (241) is threadedly connected to the fixing portion (215), thereby connecting the first oil draining member (21) and the first connector (24). The second connector (25) is annular and located on the outer periphery of the connecting portion (241) of the first connector (24). The second connector (25) is placed at the bottom inside the box (11). The outer periphery of the portion of the connecting portion (241) of the first connector (24) inside the box (11) is threadedly connected to the second connector (25), thereby fixing the position of the first connector (24).

9. The oil collection device of the range hood according to claim 8, characterized in that: The oil collection box (1) also includes a downwardly recessed step (12) formed at the bottom of the box body (11), and the perforation (13) is formed in the step (12); The oil draining device (2) also includes a pad (26), the cross-section of which is U-shaped. The stepped portion (12) is inserted into the pad (26) from the U-shaped opening side. The pad (26) is also in contact with the bottom surface of the second connector (25), the outer peripheral wall surface of the connecting portion (241) of the first connector (24) located below the second connector (25), and the upper surface of the flange (242) of the first connecting portion (241).

10. The oil collection device of the range hood according to any one of claims 1 to 3, characterized in that: The oil collection device also includes a collection bottle (3), which can be threadedly connected to the second oil discharge component (22), and the bottle opening of the collection bottle (3) is located on the outer periphery of the third oil discharge component (23).

11. A range hood, characterized in that: The application includes an oil collection device as described in any one of claims 1 to 10.

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