Range hood

Abstract

The utility model discloses a range hood which comprises an exhaust fume collecting hood and a fan frame arranged on the exhaust fume collecting hood, a fan system is arranged in the fan frame, and the range hood further comprises a ventilation oil receiving device capable of receiving oil stains at the position of the fan system and oil stains on the inner side of the fan frame. The ventilation and oil receiving device comprises a ventilation part and an oil collecting part, the inner side of the ventilation part is used for ventilation, the ventilation part can receive oil stains at the fan system and oil stains on the inner side of the fan frame, the ventilation and oil receiving device further comprises the oil collecting part used for receiving the oil stains on the inner side of the ventilation part, the ventilation part is arranged below the fan frame, and the oil collecting part is arranged below the ventilation part. Compared with the prior art, the range hood has the advantages that the ventilation oil receiving device is arranged, so that oil stains at a fan system and oil stains on the inner side of the fan frame can be received, the oil stains are prevented from falling off from the air inlet of the exhaust fume collecting hood and dripping on a cooking bench or dishes, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to an oil fume purification device, in particular to a range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. It can quickly extract the waste from stove combustion and the fumes generated during cooking and discharge them outdoors, reducing pollution and purifying the air.

[0003] The air intake of a top-suction range hood is often designed in the middle of the smoke hood, and the fan is located above the middle of the smoke hood. A large amount of oil smoke during the cooking process will be absorbed by the fan and filtered in large quantities through centrifugal action, that is, a large amount of condensed oil will be generated at the fan, and these condensed oil will fall down under the influence of gravity, especially when the fan is a horizontal fan, such as a fan system disclosed in Chinese invention patent application number 201710924561.4, which includes two fans, namely a first three-element fan and a second three-element fan, the first three-element fan includes a first three-element impeller and a first air inlet, and the second three-element fan includes a second three-element impeller and a second air inlet. In the oil smoke flow path, the second air inlet is located downstream of the first air inlet, and the first air inlet and the second air inlet face the same direction.

[0004] This existing range hood will drip oil over a wider range. If the oil filtered by the fan passes through the air intake of the smoke hood, it will drip onto the stove surface and even drip into the dishes being cooked, contaminating the dishes. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a range hood that is capable of absorbing oil stains from the fan system and the inside of the fan frame, and preventing the oil stains from falling from the air inlet of the smoke hood.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a range hood, comprising a smoke hood and a fan frame arranged above the smoke hood, a fan system being arranged in the fan frame, and characterized in that: the range hood also includes a ventilation oil collecting device capable of receiving oil stains at the fan system and oil stains inside the fan frame, the ventilation oil collecting device includes a ventilation member on the inside for ventilation and capable of receiving oil stains at the fan system and oil stains inside the fan frame, the ventilation oil collecting device also includes an oil collecting member for receiving oil stains inside the ventilation member, the ventilation member is arranged under the fan frame, and the oil collecting member is arranged under the ventilation member.

[0007] By setting up a ventilation oil collection device, the oil stains in the fan system and the inside of the fan frame can be collected, preventing the oil stains from falling from the air inlet of the smoke hood and dripping onto the stove or dishes, thereby reducing safety hazards.

[0008] In order to help rectify and receive oil pollution, the ventilation oil collecting device is arranged on the smoke collecting hood, and the ventilation component includes a sleeve, a tube body arranged at the inner center of the sleeve, and spiral blades circling from bottom to top along the circumference of the tube body.

[0009] In order to improve the air performance of the range hood, ventilation holes are opened on the wall of the tube body to connect the inside and outside of the tube body.

[0010] In order to be able to collect oil stains on the ventilation part, the oil collecting part includes a ring part, an island part, a first bridge part and a second bridge part. The island part is arranged on the inner side of the ring part, and the island part is connected to the ring part through the first bridge part and the second bridge part. A first oil collecting groove is formed on the ring part, which is recessed from the upper surface toward the inner side, and a second oil collecting groove is formed on the island part, which is recessed from the upper surface toward the inner side. A third oil collecting groove is formed on the first bridge part, which is recessed from the upper surface toward the inner side, and a fourth oil collecting groove is formed on the second bridge part, which is recessed from the upper surface toward the inner side. The first oil collecting groove, the third oil collecting groove and the second oil collecting groove are connected in sequence, and the first oil collecting groove, the fourth oil collecting groove and the second oil collecting groove are connected in sequence. The bottom of the sleeve corresponds to the first oil collecting groove, the bottom of the tube body is correspondingly arranged on the inner side of the second oil collecting groove, and the lower edge of the spiral blade is correspondingly arranged on the third oil collecting groove or the fourth oil collecting groove.

[0011] In order to intercept the oil and make it flow better into the fourth oil collecting tank, a protrusion is formed on the outer wall of the tube body to intercept the oil flowing down from the spiral blade, and the protrusion is arranged corresponding to the bottom end of the spiral blade.

[0012] In order to facilitate the oil drainage of the oil collecting part, the first bridge part and the second bridge part are respectively arranged on the front and rear sides of the island part, and the bottoms of the first oil collecting groove, the second oil collecting groove, the third oil collecting groove and the fourth oil collecting groove are gradually inclined downward from front to back. The oil collecting part also includes an oil leakage part that can discharge the oil in the ring part. The oil leakage part is arranged on the outside of the ring part, and the inner side of the oil leakage part is connected with the first oil collecting groove of the ring part. The bottom of the oil leakage part is provided with an oil leakage port.

[0013] In order to collect the oil stains from the oil collecting member, the range hood further comprises an oil box arranged at the rear bottom of the smoke collecting hood, and the oil leakage port is correspondingly arranged above the oil box.

[0014] In order to guide the oil stains at the oil leakage port into the oil box, an oil guide member for guiding the oil stains at the oil leakage port into the oil box is further provided on the inner side of the fume hood.

[0015] In order to maintain fluid communication between the smoke hood and the fan frame when the smoke hood is raised or lowered, the smoke hood can be raised or lowered relative to the fan frame, the ventilation oil receiving device is arranged on the smoke hood, and the range hood also includes a connecting hose connected between the ventilation oil receiving device and the fan frame.

[0016] In order to be able to drive the fume hood to rise and fall, the range hood further comprises a motion mechanism capable of driving the fume hood to rise and fall relative to the fan frame.

[0017] In order to drive the smoke hood to rise and fall, the motion mechanism includes a linear drive module, which includes a main body and an output end that can perform linear motion relative to the main body. The main body is arranged on one of the smoke hood and the fan frame, and the output end is arranged on the other of the smoke hood and the fan frame.

[0018] Compared with the prior art, the advantages of the present invention are as follows: by providing a ventilation oil collecting device, it is possible to collect oil stains from the fan system and the inside of the fan frame that drip onto the stove or dishes, thereby reducing safety hazards and preventing oil stains from falling from the air inlet of the smoke hood. By providing spiral blades on the ventilation parts, the spiral blades can not only collect oil stains dripping from the fan system and the inside of the fan frame, but also form a spiral air duct inside the sleeve, which can rectify the fluid flowing through and help reduce flow losses. By opening ventilation holes on the wall of the tube body, when the air volume of the range hood is large, part of the flow can enter the central air duct inside the tube body through the ventilation holes, reducing the flow path of this part of the flow, thereby improving the air performance of the range hood at the same fan speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a range hood according to an embodiment of the present invention;

[0020] Figure 2 This is a front cross-sectional view of the range hood after the movement mechanism is hidden according to an embodiment of the present utility model;

[0021] Figure 3 This is an exploded view of the ventilation and oil receiving device of the range hood according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram showing the positions of the ventilation oil receiving device, oil guide member and oil box of the range hood according to an embodiment of the present utility model;

[0023] Figure 5 This is a side cross-sectional view of the range hood after the movement mechanism is hidden according to an embodiment of the utility model; DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration 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. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0026] See also Figures 1 and 2 and Figure 5 A range hood includes a fume hood 1 and a fan frame 2 arranged on the fume hood 1. The fume hood 1 is provided with an air inlet 11, and the fan frame 2 is provided with a fan system 3, which can be arranged horizontally.

[0027] See also Figures 2 to 5 The range hood also includes a ventilation oil collection device 4 disposed on the fume hood 1. The ventilation oil collection device 4 includes a ventilation member 41 and an oil collection member 42. The end of the ventilation member 41, remote from the fume hood 1, is directly or indirectly connected to the fan frame 2. The inner side of the ventilation member 41 allows for ventilation, thereby achieving fluid communication between the fume hood 1 and the fan frame 2. The ventilation member 41 can also collect oil from the fan system 3 and from the inside of the fan frame 2. The oil collection member 42 is disposed below the ventilation member 41 and is used to collect oil from the inside of the ventilation member 41.

[0028] The ventilation element 41 comprises a sleeve 411, a tube 413 positioned at the inner center of the sleeve 411, and spiral blades 412 that spiral upward along the circumference of the tube 413. The spiral blades 412 facilitate flow rectification. During operation, when oil smoke enters the fume hood 1, the fluid is in a turbulent state. Once the fluid enters the spiral air duct formed by the spiral blades 412, it spirals upward along the spiral duct, rectifying the fluid flow and helping to reduce flow losses.

[0029] The wall of the tube body 413 may be provided with a ventilation hole 4132 that connects the inside and outside of the tube body 413. When the range hood's air volume is high, a portion of the air flow can enter the central air duct inside the tube body 413 through the ventilation hole 4132, reducing the flow path of this portion of air flow, thereby improving the range hood's air performance at the same fan speed.

[0030] The oil collecting member 42 includes a ring portion 421, an island portion 422, a first bridge portion 423, and a second bridge portion 424. The island portion 422 is disposed inside the ring portion 421 and connected to the ring portion 421 via the first bridge portion 423 and the second bridge portion 424. A first oil collecting groove 4211, which is recessed inward from the upper surface, is formed on the ring portion 421. A second oil collecting groove 4221, which is recessed inward from the upper surface, is formed on the island portion 422. A third oil collecting groove 4231, which is recessed inward from the upper surface, is formed on the first bridge portion 423. A fourth oil collecting groove 4241, which is recessed inward from the upper surface, is formed on the second bridge portion 424. The first oil collecting groove 4211, the third oil collecting groove 4231, and the second oil collecting groove 4221 are sequentially connected. The first oil collecting groove 4211, the fourth oil collecting groove 4241, and the second oil collecting groove 4221 are sequentially connected. The bottom of the sleeve 411 corresponds to the first oil collecting trough 4211, and the bottom of the tube body 413 is correspondingly arranged on the inner side of the second oil collecting trough 4221. As a result, the oil and dirt flowing down the inner circumferential surfaces of the sleeve 411 and the tube body 413 can be collected in the corresponding oil collecting trough. The lower edge of the spiral blade 412 is correspondingly arranged above the fourth oil collecting trough 4241. When the oil and dirt on the fan system 3 and the inner side of the fan frame 2 drip vertically downward, it will drip onto the spiral blade 412, flow along the spiral blade 412 to the lower edge of the spiral blade, and then drip into the fourth oil collecting trough 4241. Alternatively, the lower edge of the spiral blade 412 can also be correspondingly arranged above the third oil collecting trough 42131.

[0031] A protrusion 4131 is formed on the outer wall surface of the tube body 413 to intercept oil stains flowing down from the spiral blade 412. The protrusion 4131 is arranged corresponding to the bottom end of the spiral blade 412 and extends in the up and down direction.

[0032] The first bridge portion 423 and the second bridge portion 424 are respectively provided at the front and rear sides of the island portion 422 . The bottoms of the first oil collecting trough 4211 , the second oil collecting trough 4221 , the third oil collecting trough 4231 and the fourth oil collecting trough 4241 are gradually inclined downward from front to back.

[0033] The oil collector 42 also includes an oil leakage portion 425 capable of draining oil from the ring portion 421. The oil leakage portion 425 is located at the rear side of the ring portion 421. The inner side of the oil leakage portion 425 communicates with the first oil collection groove 4211 of the ring portion 421. An oil leakage port 4251 is defined at the bottom of the oil leakage portion 425. The range hood also includes an oil box 5 located at the rear bottom of the fume hood 1. The oil leakage port 4251 is correspondingly positioned above the oil box 5. An oil guide 6 is also located inside the fume hood 1 to direct oil from the oil leakage port 4251 into the oil box 5.

[0034] See also Figures 1 and 2 and Figure 5 The fume hood 1 can be raised and lowered relative to the fan frame 2. The ventilation oil receiving device 4 is disposed above the fume hood 1. The range hood also includes a connecting hose 7 connected between the ventilation oil receiving device 4 and the fan frame 2. The connecting hose 7 and the ventilation oil receiving device 4 together provide fluid communication between the fume hood 1 and the fan frame 2. As the fume hood 1 is raised or lowered, the connecting hose 7 can expand and contract, providing a flexible connection.

[0035] See also Figure 1 The range hood further includes a motion mechanism capable of driving the fume hood 1 to rise and fall relative to the fan frame 2. The motion mechanism includes a linear drive module 8, which includes a main body 81 and an output end 82 capable of linear motion relative to the main body 81. The main body 81 is disposed on one of the fume hood 1 and the fan frame 2, and the output end 82 is disposed on the other of the fume hood 1 and the fan frame 2. In this embodiment, there are four linear drive modules 8, respectively disposed near the four corners of the fan frame 2. The main body 81 of the linear drive module is connected to the fan frame 2, and the output end 82 is connected to the fume hood 1.

[0036] The "fluid communication" referred to in the present invention refers to the spatial positional relationship between two components or parts (hereinafter collectively referred to as the first part and the second part), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path and / or be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, conduit, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A range hood, comprising a fume hood (1) and a fan frame (2) arranged on the fume hood (1), wherein a fan system (3) is arranged in the fan frame (2), characterized in that: The range hood further comprises a ventilation oil receiving device (4) capable of receiving oil stains from the fan system (3) and oil stains on the inner side of the fan frame (2); the ventilation oil receiving device (4) comprises a ventilation member (41) on the inner side for ventilation and capable of receiving oil stains from the fan system (3) and oil stains on the inner side of the fan frame (2); the ventilation oil receiving device (4) further comprises an oil collecting member (42) for receiving oil stains on the inner side of the ventilation member (41); the ventilation member (41) is arranged below the fan frame (2); and the oil collecting member (42) is arranged below the ventilation member (41).

2. The range hood according to claim 1, characterized in that: The ventilation oil receiving device (4) is arranged on the smoke collecting hood (1), and the ventilation member (41) comprises a sleeve (411), a tube body (413) arranged at the inner center of the sleeve (411), and a spiral blade (412) spiraling from bottom to top along the circumference of the tube body (413).

3. The range hood according to claim 2, characterized in that: A ventilation hole (4132) is provided on the wall of the tube body (413) for communicating the inside and outside of the tube body (413).

4. The range hood according to claim 3, characterized in that: The oil collecting member (42) comprises a ring portion (421), an island portion (422), a first bridge portion (423) and a second bridge portion (424); the island portion (422) is arranged on the inner side of the ring portion (421); the island portion (422) is connected to the ring portion (421) via the first bridge portion (423) and the second bridge portion (424); a first oil collecting groove (4211) is formed on the ring portion (421) and is recessed from the upper surface toward the inner side; a second oil collecting groove (4221) is formed on the island portion (422) and is recessed from the upper surface toward the inner side; a third oil collecting groove (4231) is formed on the first bridge portion (423) and is recessed from the upper surface toward the inner side; A fourth oil collecting groove (4241) is formed on the second bridge portion (424), which is recessed from the upper surface toward the inside. The first oil collecting groove (4211), the third oil collecting groove (4231) and the second oil collecting groove (4221) are connected in sequence. The first oil collecting groove (4211), the fourth oil collecting groove (4241) and the second oil collecting groove (4221) are connected in sequence. The bottom of the sleeve (411) corresponds to the first oil collecting groove (4211), the bottom of the tube body (413) is correspondingly arranged on the inner side of the second oil collecting groove (4221), and the lower edge of the spiral blade (412) is correspondingly arranged on the third oil collecting groove (4231) or the fourth oil collecting groove (4241).

5. The range hood according to claim 4, characterized in that: A protrusion (4131) capable of intercepting oil stains flowing down from the spiral blade (412) is formed on the outer wall surface of the tube body (413), and the protrusion (4131) is arranged corresponding to the bottom end of the spiral blade (412).

6. The range hood according to claim 4, characterized in that: The first bridge portion (423) and the second bridge portion (424) are respectively arranged at the front and rear sides of the island portion (422); the bottoms of the first oil collecting groove (4211), the second oil collecting groove (4221), the third oil collecting groove (4231) and the fourth oil collecting groove (4241) are gradually inclined downward from front to back; the oil collecting member (42) further comprises an oil leakage portion (425) capable of discharging oil in the ring portion (421); the oil leakage portion (425) is arranged on the outer side of the ring portion (421); the inner side of the oil leakage portion (425) is communicated with the first oil collecting groove (4211) of the ring portion (421); and an oil leakage port (4251) is provided at the bottom of the oil leakage portion (425).

7. The range hood according to claim 6, characterized in that: The range hood further comprises an oil box (5) arranged at the rear bottom of the fume collecting hood (1), and the oil leakage port (4251) is correspondingly arranged above the oil box (5).

8. The range hood according to claim 7, characterized in that: The inner side of the smoke collecting hood (1) is also provided with an oil guide member (6) for guiding the oil dirt from the oil leakage port (4251) into the oil box (5).

9. The range hood according to any one of claims 1 to 8, characterized in that: The fume hood (1) can be raised and lowered relative to the fan frame (2); the ventilation oil receiving device (4) is arranged on the fume hood (1); and the range hood further comprises a connecting hose (7) connected between the ventilation oil receiving device (4) and the fan frame (2).

10. The range hood according to claim 9, characterized in that: The range hood further comprises a motion mechanism capable of driving the fume hood (1) to rise and fall relative to the fan frame (2).

11. The range hood according to claim 10, characterized in that: The motion mechanism comprises a linear drive module (8), the linear drive module (8) comprising a main body (81) and an output end (82) capable of performing linear motion relative to the main body (81), the main body (81) being arranged on one of the smoke hood (1) and the fan frame (2), and the output end (82) being arranged on the other of the smoke hood (1) and the fan frame (2).

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