Range hood

Abstract

The utility model discloses a range hood which comprises a smoke inlet shell which comprises a back plate, and is characterized in that the range hood further comprises a cleaning device capable of cleaning oil stains on the inner side of the back plate, and the cleaning device comprises a first oil scraping piece and a second oil scraping piece, the first oil scraping piece and the second oil scraping piece can transversely move on the back plate to scrape oil. Compared with the prior art, the back plate cleaning device has the advantage that oil on the back plate can be cleaned.

Description

Technical Field

[0001] This utility model relates to an oil fume purification device, and more particularly to an oil fume extractor. Background Technology

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

[0003] For example, Chinese utility model patent application number 202321975653.2 discloses a range hood and its smoke collection chamber. The smoke collection chamber includes a first sub-chamber and a second sub-chamber. The first sub-chamber is located above the second sub-chamber. The first sub-chamber is provided with at least one first connecting part, and the second sub-chamber is provided with at least one second connecting part. The first connecting part and the second connecting part are detachably connected. The first sub-chamber includes a first back plate. The bottom of the first back plate is provided with a rearward first flange. The first flange and the surface of the first back plate cooperate to form a groove. The second sub-chamber includes a second back plate. The top of the second back plate is provided with a forward second flange. The second flange is engaged in the groove.

[0004] The second back panel of the aforementioned range hood serves as part of the oil path, collecting the oil flowing out from the upper components and guiding it into the oil cup by gravity. When the range hood is working, the oil flows onto the second back panel, eventually forming condensed oil that is difficult for users to clean. Utility Model Content

[0005] The technical problem to be solved by this utility model is to address the shortcomings of the above-mentioned patents by providing a range hood that can clean the oil on the back panel.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a range hood, including a housing for smoke intake, the housing including a back plate, characterized in that: the range hood further includes a cleaning device for cleaning oil stains on the inner side of the back plate, the cleaning device including a first oil scraper and a second oil scraper, both of which can move laterally on the back plate to scrape oil.

[0007] By installing a first oil scraper and a second oil scraper on the back panel, the oil on the back panel can be cleaned, preventing oil accumulation.

[0008] In order to concentrate the oil on the back plate towards the center, the first oil scraper and the second oil scraper can be in a first position located on the left and right sides of the back plate respectively, moving away from each other, and in a second position located in the middle of the back plate, moving closer to each other.

[0009] In order to drive movement, the range hood includes a motion mechanism capable of driving the first and second oil scraping components to move.

[0010] In order to drive movement, the motion mechanism includes a first link assembly and a second link assembly, both of which are scissor-type telescopic structures. The first link assembly and the second link assembly are arranged left and right and both are laterally telescopic.

[0011] To facilitate the transmission between each linkage assembly and the corresponding oil scraper, the right side of the first linkage assembly has a first end and a second end arranged vertically, both located in the middle of the back plate. The first end is rotatably connected to the back plate, and the second end can move longitudinally relative to the back plate. The left side of the first linkage assembly has a third end and a fourth end arranged vertically. The motion mechanism also includes a first connector connecting the first linkage assembly and the first oil scraper. The third end is rotatably connected to the first connector, and the fourth end is longitudinally slidably connected to the first connector. The first connector is connected to the first oil scraper. The left side of the second linkage assembly has a fifth end and a sixth end arranged vertically, both located in the middle of the back plate. The fifth end is rotatably connected to the back plate, and the sixth end can move longitudinally relative to the back plate. The right side of the second linkage assembly has a seventh end and an eighth end arranged vertically. The motion mechanism also includes a second connector connecting the second linkage assembly and the second oil scraper. The seventh end is rotatably connected to the second connector, and the eighth end is longitudinally slidably connected to the second connector. The second connector is connected to the second oil scraper.

[0012] To enable the connection between the connector and the corresponding oil scraper, the first connector includes a first connector body and a first exposed portion. The first connector body is connected to the first oil scraper, and the first exposed portion is exposed at the top of the first oil scraper. The third end is rotatably connected to the first exposed portion, and the fourth end is longitudinally slidably connected to the first exposed portion. The second connector includes a second connector body and a second exposed portion. The second connector body is connected to the second oil scraper, and the second exposed portion is exposed at the top of the second oil scraper. The seventh end is rotatably connected to the second exposed portion, and the eighth end is longitudinally slidably connected to the second exposed portion.

[0013] In order to realize the telescopic movement of the linkage assembly, the motion mechanism also includes a slider and a slide groove. The slide groove is disposed on the back plate, and the slider slides longitudinally with the slide groove. The second end and the sixth end are both rotatably connected to the slider.

[0014] To achieve longitudinal movement of the slider, the motion mechanism further includes a linear drive module capable of driving the slider longitudinally. The linear drive module includes a linear drive module body and an output end capable of longitudinally extending and retracting relative to the linear drive module body. The output end is connected to the slider.

[0015] In order to concentrate the oil on the back plate towards the center of the back plate for treatment, an oil guide groove is formed in the middle of the back plate and is recessed towards the rear side of the back plate. When the first oil scraper and the second oil scraper are in the second position, the first oil scraper and the second oil scraper are respectively located on the left and right sides of the oil guide groove.

[0016] To facilitate oil transport, the oil guide groove is formed with a longitudinally continuous wedge-shaped structure, which is formed by the front surface of the oil guide groove being recessed towards the rear.

[0017] To reduce the impact of cooking fumes on the moving parts, the range hood also includes a protective cover installed on the moving parts to reduce contact between the moving parts and cooking fumes.

[0018] Compared with the prior art, the advantages of this utility model are as follows: By setting a first oil scraper and a second oil scraper on the back plate, the oil on the back plate can be cleaned. By setting an oil guide groove and setting a longitudinally continuous wedge structure in the oil guide groove, the wedge structure is formed by the front surface of the oil guide groove being concave towards the rear. The continuous wedge structure facilitates the spontaneous transport of liquid. The surface in the wedge structure area is treated as a superoleophobic surface, and the remaining area of ​​the oil guide groove is treated as a superoleophilic surface, thereby helping the oil transport. Under the action of gravity and capillary force, the oil will flow into the oil cup more quickly, improving the efficiency of the oil flowing into the oil cup, reducing loss, and reducing the adhesion of oil to the back plate of the box. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a range hood according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the range hood according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the connecting rod assembly of the range hood according to an embodiment of the present utility model when unfolded;

[0022] Figure 4 This is a schematic diagram of the connecting rod assembly of the range hood in an embodiment of the present utility model when it is retracted.

[0023] Figure 5 for Figure 4 Enlarged view of section I;

[0024] Figure 6This is an exploded view of some components of the range hood according to an embodiment of the present utility model. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] See Figures 1-5 A range hood includes a housing 1, which is a component for collecting and introducing smoke into the range hood and is located below the fan system that serves as the power source. The housing 1 includes a back plate 11, which is close to the vertical wall where the range hood is installed in the normal installation state.

[0027] The range hood also includes a cleaning device for cleaning grease from the inside of the back panel 11. The inside of the back panel 11 refers to the side facing inwards from the housing 1, which is the forward-facing side in the normal installation state. The cleaning device includes a first oil scraper 21 and a second oil scraper 22, both of which can move laterally on the back panel 11 to scrape grease. Preferably, both the first oil scraper 21 and the second oil scraper 22 are made of high-temperature resistant silicone material, thereby avoiding potential scratches to the back panel 11 and the impact of high temperatures inside the housing 1 on the oil scraper.

[0028] The first oil scraper 21 and the second oil scraper 22 can be in a first position located on the left and right sides of the back plate 11 respectively, moving away from each other, and in a second position located in the middle of the back plate 11, moving closer to each other.

[0029] See Figure 3 , Figure 4 and Figure 6 The range hood includes a motion mechanism capable of driving the first 21 and the second oil scraper 22 to move. The motion mechanism includes a first link assembly 23 and a second link assembly 24, both of which are scissor-type telescopic structures. The first link assembly 23 and the second link assembly 24 are arranged left and right and both are laterally telescopic. This scissor-type telescopic structure of the two link assemblies adopts existing technology.

[0030] The right side of the first linkage assembly 23 has a first end 231 and a second end 232 arranged vertically. Both the first end 231 and the second end 232 are located in the middle of the back plate 11. The first end 231 is rotatably connected to the back plate 11, and the second end 232 is capable of longitudinal movement relative to the back plate 11. The left side of the first linkage assembly 23 has a third end 233 and a fourth end 234 arranged vertically. The motion mechanism also includes a first connector 25 connecting the first linkage assembly 23 and the first oil scraper 21. The first connector 25 includes a first connector body 251 and a first exposed portion 252. The first connector body 251 is connected to the first oil scraper 21, and the first oil scraper 21 is sleeved on the outside of the first connector body 251. The first exposed portion 252 is exposed at the top of the first oil scraper 21. The third end 233 is rotatably connected to the first exposed portion 252, and the fourth end 234 is longitudinally slidably connected to the first exposed portion 252.

[0031] The second linkage assembly 24 has a fifth end 241 and a sixth end 242 arranged vertically on its left side. Both the fifth end 241 and the sixth end 242 are located in the middle of the back plate 11. The fifth end 241 is rotatably connected to the back plate 11, and the sixth end 242 can move longitudinally relative to the back plate 11. The second linkage assembly 24 has a seventh end 243 and an eighth end 244 arranged vertically on its right side. The motion mechanism also includes a second connector 26 connecting the second linkage assembly 24 and the second oil scraper 22. The second connector 26 includes a second connector body 261 and a second exposed portion 262. The second connector body 261 is connected to the second oil scraper 22, and the second oil scraper 22 is sleeved on the outside of the second connector body 261. The second exposed portion 262 is exposed at the top of the second oil scraper 22. The seventh end 243 is rotatably connected to the second exposed portion 262, and the eighth end 244 is longitudinally slidably connected to the second exposed portion 262.

[0032] See Figures 3-4 The motion mechanism also includes a slider 27 and a slide groove 28. The slide groove 28 is disposed on the back plate 11. The slider 27 slides longitudinally with the slide groove 28. The second end 232 and the sixth end 242 are rotatably connected to the slider 27.

[0033] The motion mechanism also includes a linear drive module capable of driving the slider 27 to move longitudinally. The linear drive module includes a linear drive module body 291 and an output end 292 capable of longitudinally extending and retracting relative to the linear drive module body 291. The output end 292 is connected to the slider 27. In this embodiment, the linear drive module is an electric actuator, but it can also be replaced by other existing linear drive modules, such as a motor and rack and pinion mechanism, or a cylinder.

[0034] See Figure 2The range hood also includes a protective cover 3 installed on the moving mechanism to reduce the contact between the moving mechanism and the oil fumes.

[0035] See Figures 1-5 An oil guide groove 111 is formed in the middle of the back plate 11, recessed towards the rear side of the back plate 11. When the first oil scraper 21 and the second oil scraper 22 are in the second position, the first oil scraper 21 and the second oil scraper 22 are located on the left and right sides of the oil guide groove 111, respectively. A longitudinally continuous wedge structure 112 is provided in the oil guide groove 111. The wedge structure 112 is formed by the front surface of the oil guide groove 111 recessed towards the rear side. The continuous wedge structure 112 is conducive to the spontaneous transport of liquid. The surface of the area of ​​the wedge structure 112 is treated as a superoleophobic surface, and the remaining area of ​​the oil guide groove 111 is treated as a superoleophilic surface, thereby helping the oil transport. Under the action of gravity and capillary force, the oil will flow into the oil cup more quickly, improving the efficiency of the oil flowing into the oil cup, reducing loss, and reducing the adhesion of oil to the back plate of the box.

[0036] See Figure 5 After each use of the range hood, under the action of the linear drive module, the first linkage assembly 23 and the second linkage assembly 24 of the scissor-type structure retract towards the middle, driving the first oil scraper 21 and the second oil scraper 22 to move towards the middle of the back plate 11, thereby pushing the oil on the back plate 11 into the oil guide groove 111 located in the middle of the back plate, and finally leading it into the oil cup (not shown in the figure), thus avoiding the accumulation of a lot of condensed oil on the back plate 11, which would cause problems that are difficult to clean.

Claims

1. A range hood, comprising a housing (1) for smoke intake, said housing (1) including a back plate (11), characterized in that: The range hood also includes a cleaning device that can clean the oil stains on the inside of the back panel (11). The cleaning device includes a first oil scraper (21) and a second oil scraper (22). Both the first oil scraper (21) and the second oil scraper (22) can move laterally on the back panel (11) to scrape oil.

2. The range hood according to claim 1, characterized in that: The first oil scraper (21) and the second oil scraper (22) can be in a first position located on the left and right sides of the back plate (11) respectively, moving away from each other, and in a second position located in the middle of the back plate (11), moving closer to each other.

3. The range hood according to claim 2, characterized in that: The range hood includes a motion mechanism capable of driving the first oil scraper (21) and the second oil scraper (22) to move.

4. The range hood according to claim 3, characterized in that: The motion mechanism includes a first link assembly (23) and a second link assembly (24), both of which are scissor-type telescopic structures. The first link assembly (23) and the second link assembly (24) are arranged left and right and both are laterally telescopic.

5. The range hood according to claim 4, characterized in that: The first linkage assembly (23) has a first end (231) and a second end (232) arranged vertically on the right side. The first end (231) and the second end (232) are both located in the middle of the back plate (11). The first end (231) is rotatably connected to the back plate (11). The second end (232) can move longitudinally relative to the back plate (11). The first linkage assembly (23) has a third end (233) and a fourth end (234) arranged vertically on the left side. The motion mechanism also includes a first connector (25) connected between the first linkage assembly (23) and the first oil scraper (21). The third end (233) is rotatably connected to the first connector (25). The fourth end (234) is longitudinally slidably connected to the first connector (25). The first connector (25) is connected to the first oil scraper (21). The second linkage assembly (24) has a fifth end (241) and a sixth end (242) arranged vertically on the left side. The fifth end (241) and the sixth end (242) are both located in the middle of the back plate (11). The fifth end (241) is rotatably connected to the back plate (11). The sixth end (242) can move longitudinally relative to the back plate (11). The second linkage assembly (24) has a seventh end (243) and an eighth end (244) arranged vertically on the right side. The motion mechanism also includes a second connector (26) connected between the second linkage assembly (24) and the second oil scraper (22). The seventh end (243) is rotatably connected to the second connector (26). The eighth end (244) is longitudinally slidably connected to the second connector (26). The second connector (26) is connected to the second oil scraper (22).

6. The range hood according to claim 5, characterized in that: The first connector (25) includes a first connector body (251) and a first exposed portion (252). The first connector body (251) is connected to the first oil scraper (21). The first exposed portion (252) is exposed at the top of the first oil scraper (21). The third end (233) is rotatably connected to the first exposed portion (252). The fourth end (234) is longitudinally slidably connected to the first exposed portion (252). The second connector (26) includes a second connector body (261) and a second exposed portion (262). The second connector body (261) is connected to the second oil scraper (22). The second exposed portion (262) is exposed at the top of the second oil scraper (22). The seventh end (243) is rotatably connected to the second exposed portion (262). The eighth end (244) is longitudinally slidably connected to the second exposed portion (262).

7. The range hood according to claim 5, characterized in that: The motion mechanism also includes a slider (27) and a groove (28). The groove (28) is disposed on the back plate (11). The slider (27) and the groove (28) slide longitudinally together. The second end (232) and the sixth end (242) are rotatably connected to the slider (27).

8. The range hood according to claim 7, characterized in that: The motion mechanism also includes a linear drive module capable of driving the slider (27) to move longitudinally. The linear drive module includes a linear drive module body (291) and an output end (292) capable of longitudinally extending and retracting relative to the linear drive module body (291). The output end (292) is connected to the slider (27).

9. The range hood according to any one of claims 2 to 8, characterized in that: An oil guide groove (111) is formed in the middle of the back plate (11) and is recessed toward the rear side of the back plate (11). When the first oil scraper (21) and the second oil scraper (22) are in the second position, the first oil scraper (21) and the second oil scraper (22) are respectively located on the left and right sides of the oil guide groove (111).

10. The range hood according to claim 9, characterized in that: The oil guide groove (111) has a longitudinally continuous wedge-shaped structure (112) formed therein, and the wedge-shaped structure (112) is formed by the front surface of the oil guide groove (111) being recessed towards the rear side.

11. The range hood according to any one of claims 3 to 8, characterized in that: The range hood also includes a protective cover (3) that covers the moving mechanism to reduce the contact between the moving mechanism and the oil fumes.

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