Range hood

Abstract

The utility model discloses a range hood which comprises an air inlet assembly and a fan frame arranged on the air inlet assembly, the air inlet assembly comprises a shell, the shell comprises a rear plate, a fan is arranged in the fan frame, and the range hood further comprises a cleaning device used for cleaning the fan. The range hood further comprises an oil guide part capable of directly or indirectly guiding a water-oil mixture generated after the fan is cleaned by the cleaning device to the rear plate and an oil collecting part capable of collecting the water-oil mixture flowing down from the rear plate, the top of the oil collecting part is open, a notch facing the rear upper portion is formed in the rear plate, and the oil collecting part is arranged in the notch. The oil collecting piece comprises a rear side wall located on the rear side, the rear side wall upwards penetrates through the notch from the side, facing the interior of the air inlet assembly, of the rear plate to be matched with the notch in an inserted connection mode, and the rear side wall and the notch extend in the width direction of the rear plate. Compared with the prior art, the range hood has the advantages that the flow guide structure is arranged on the inner side of the shell of the range hood, so that a water-oil mixture can be conveniently collected.

Description

Technical Field

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

[0002] As an indispensable kitchen appliance in every family, the range hood sucks in oil fume from the air inlet through the high-speed rotating impeller in the volute, filters the oil fume with the impeller, and discharges the filtered oil fume from the air outlet to complete the kitchen air purification work. Reasonable air inlet setting is conducive to improving the oil fume absorption effect, reducing the escape of oil fume, and improving the air quality in the kitchen.

[0003] As the range hood is used for a long time, a layer of oil sludge is easily adsorbed on the surface of the range hood's volute, impeller and other parts, which in turn affects the normal operation of the range hood's power system and ultimately leads to a continuous decrease in the extraction effect. At the same time, the continuous accumulation of oil stains inside the range hood can easily cause odors and bacteria to grow in the kitchen, thus affecting the user's health and reducing the fun of cooking.

[0004] In view of the above problems, self-cleaning technology can be used to remove the sludge inside the range hood. For example, a self-cleaning range hood disclosed in Chinese utility model patent application number 201720850895.7 includes a main fan, an air outlet hood arranged at the air outlet of the main fan, and a self-cleaning device. The main fan includes a volute and an impeller arranged in the volute. The self-cleaning device includes a spray mechanism for discharging washing liquid into the volute. The self-cleaning device also includes a blowing mechanism for blowing the washing liquid sprayed into the volute toward the impeller. The blowing mechanism includes an air duct connected to the air outlet hood and nozzles respectively connected to the air duct and the bottom of the volute.

[0005] During the cleaning process of some self-cleaning range hoods, the oil-water mixture will flow out of the volute and enter the shell, and then flow into the oil cup from the shell. Therefore, the interior of the shell should have a certain diversion structure to guide all the oil-water mixture into the oil cup. Otherwise, the oil-water mixture will easily flow onto the stove top, causing customer complaints. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a range hood in view of the deficiencies in the above-mentioned prior art, wherein the inner side of the shell of the range hood has a flow guide structure, thereby facilitating the collection of oil stains.

[0007] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a range hood, comprising an air inlet assembly and a fan frame arranged on the air inlet assembly, the air inlet assembly comprising a shell, the shell comprising a rear plate, a fan is arranged in the fan frame, the range hood also comprises a cleaning device for cleaning the fan, and is characterized in that: the range hood also comprises an oil guide member capable of directly or indirectly guiding the water-oil mixture generated after the cleaning device cleans the fan to the rear plate, the range hood also comprises an oil collecting member capable of collecting the water-oil mixture flowing down from the rear plate, the top of the oil collecting member is open, a notch is arranged on the rear plate, the oil collecting member comprises a rear side wall located on the rear side, the rear side wall passes through the notch upward from the rear plate toward the side of the air inlet assembly and is plug-matched with the notch, and the rear side wall and the notch both extend along the width direction of the rear plate.

[0008] The oil collecting piece and the rear plate are connected by a plug-in connection, which has a good flow-guiding effect. When the water-oil mixture flows downward through the upper edge of the slot, it will flow or drip onto the rear side wall and enter the oil collecting piece along the rear side wall, so that the water-oil mixture can flow smoothly into the oil collecting piece.

[0009] In order to guide the water-oil mixture on the left and right sides of the rear plate to the oil collecting piece, the range hood also includes a first side panel and a second side panel that can guide the water-oil mixture on the left and right sides of the rear plate into the oil collecting piece, the first side panel and the second side panel are both arranged on the rear plate, the first side panel is arranged corresponding to the left side of the rear plate, and the second side panel is arranged corresponding to the right side of the rear plate, and the bottoms of the first side panel and the second side panel are both located above the oil collecting piece.

[0010] In order to guide the water-oil mixture on the left and right sides of the rear plate to the oil collecting part, the shell also includes a top plate, a left plate and a right plate, the first side plate includes a first plate body corresponding to the left part of the top plate and a second plate body corresponding to the left side plate, the top of the second plate body is connected to the left side of the first plate body, the second side plate includes a third plate body corresponding to the right part of the top plate and a fourth plate body corresponding to the right side plate, the top of the fourth plate body is connected to the right side of the third plate body, the lower ends of the second plate body and the fourth plate body are both located above the oil collecting part, and the projections of the lower ends of the second plate body and the fourth plate body on the horizontal plane are both located within the projection range of the top opening of the oil collecting part on the horizontal plane.

[0011] In order to achieve sealing between each plate body and the rear plate, the gap between each plate body and the rear plate is sealed by filling paraffin.

[0012] In order to discharge the water-oil mixture in the oil collecting member, an oil leakage port capable of discharging the water-oil mixture in the oil collecting member is arranged at the bottom of the oil collecting member.

[0013] In order to collect the water-oil mixture in the oil collecting piece, the range hood further comprises an oil cup for receiving the water-oil mixture at the oil collecting piece, and the oil cup is located on the inner side of the shell and below the oil leakage port.

[0014] Furthermore, the oil collecting part also includes a front side wall, a left side wall, a right side wall and a bottom wall, all of which are located in the air inlet assembly. The front side wall is arranged at intervals on the front side of the rear side wall, the left side wall is located between the left side ends of the front side wall and the rear side wall, the right side wall is located between the right side ends of the front side wall and the rear side wall, and the bottom wall is located between the lower ends of the upper side walls. The upper ends of the left side wall and the right side wall are both lower than the upper end of the rear side wall. Thus, an oil collecting part with an open top is formed by the side walls and the bottom wall, and the plug-in fit between the rear side wall and the rear plate can be ensured.

[0015] Furthermore, the width of the rear side wall is greater than that of the front side wall, the left side wall gradually inclines to the left from bottom to top, and the right side wall gradually inclines to the right from bottom to top, thereby guiding the water-oil mixture on the left and right sides to flow into the oil collecting member.

[0016] Compared with the prior art, the utility model has the advantages that: the plug-in connection is adopted between the oil collecting part and the rear plate, and the plug-in connection has a good flow-guiding effect. When the water-oil mixture flows downward through the upper edge of the notch, it will flow or drip onto the rear side wall and enter the oil collecting part along the rear side wall, so that the water-oil mixture can flow smoothly into the oil collecting part. By setting the first side plate and the second side plate, the water-oil mixture on the left and right sides of the rear plate can be guided to the oil collecting part. By filling the gap between each plate body and the rear plate with paraffin to seal, the sealing performance is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a range hood according to an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the interior of a range hood according to an embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the rear side of the range hood according to an embodiment of the utility model;

[0020] Figure 4 A side cross-sectional view of a range hood according to an embodiment of the utility model;

[0021] Figure 5 for Figure 4 Enlarged view of part I. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] In the description of the present utility model, 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 the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model 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, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0024] See also Figure 1 to Figure 4 A range hood includes an air inlet assembly 1 and a fan frame 2 arranged on the air inlet assembly 1.

[0025] The air inlet assembly 1 includes a housing 11 , and the housing 11 includes a top plate 112 , a left side plate 113 , a right side plate 114 and a rear plate 111 .

[0026] See also Figure 4 The range hood further comprises a fan 3 arranged in the fan frame 2 and a cleaning device for cleaning the fan 3. An oil guide 4 is arranged below the fan 3 for collecting sewage generated after the cleaning device cleans the fan 3. The oil guide 4 is in a long strip shape with an open top, and the oil guide 4 is gradually inclined downward from front to back. The rear end of the oil guide 4 is connected to the rear side of the fan frame 2, so that the water-oil mixture can be guided to the rear side of the fan frame 2, and the water-oil mixture flows from the rear side of the fan frame 2 to the rear plate 111.

[0027] See also Figure 2 to Figure 5 The range hood further comprises an oil collecting member 5 capable of collecting the water-oil mixture of the rear plate 111. The oil collecting member 5 is in the shape of a long strip with an open top and extends along the width direction of the rear plate 111 (the width direction of the rear plate 111 is Figure 2) is extended in the left and right directions shown in . A notch 1111 is provided on the rear plate 111, and the notch 1111 extends in the width direction of the rear plate 111. The oil collecting piece 5 includes a rear side wall 51 located on the rear side, and the rear side wall 51 is configured as a plug-in portion for cooperating with the rear plate 111. Specifically, the rear side wall 51 passes through the notch 1111 upward from the side of the rear plate 111 toward the inside of the air inlet assembly 1, so as to be plug-in-matched with the notch 1111. This plug-in method of the rear side wall 51 also makes the part above the notch 1111 located on the rear side of the rear plate 111 after plugging. This plug-in connection has a good flow-guiding effect. When the water-oil mixture flows downward through the upper edge of the notch 1111, it will flow or drip onto the rear side wall 51 and enter the oil collecting piece 5 along the rear side wall 51. Since the rear side wall 51 passes upward from the inner side of the air inlet assembly 1 through the notch 1111 and is located outside the air inlet assembly 1, the rear side wall 51 and the notch 1111 may have a backward bending portion at the matching position, or the rear side wall 51 and the notch 1111 may also be provided as in the present invention. Figure 5 As shown in , the rear plate 111 is arranged in a staggered manner at the upper and lower edges of the notch 1111 so that the rear side wall 51 passes through from bottom to top. Other structures can also be used, as long as the rear side wall 51 passes through the notch 1111 upward from the side (front side) of the rear plate 111 toward the air inlet assembly 1 and then is inserted into the rear side of the rear plate 111 located above the notch 1111. The oil collecting member 5 and the rear plate 111 can be connected by screws.

[0028] The oil collecting part 5 also includes a front side wall 53, a left side wall 54, a right side wall 55 and a bottom wall 56, all of which are located in the air inlet assembly 1, wherein the front side wall 53 is arranged at intervals on the front side of the rear side wall 51, and its upper end portion may be lower than the upper end portion of the rear side wall 51, the left side wall 54 is located between the left end portions of the front side wall 53 and the rear side wall 51, the right side wall 55 is located between the right end portions of the front side wall 53 and the rear side wall 51, and the bottom wall 56 is located between the lower end portions of the above-mentioned side walls, thereby the rear side wall 51, the front side wall 53, the left side wall 54, the right side wall 55 and the bottom wall 56 together constitute an oil collecting part 5 with an open top.

[0029] The width of the rear side wall 51 is greater than that of the front side wall 53 (bottom wall 56), the left side wall 54 gradually tilts leftward from bottom to top, and the right side wall 55 gradually tilts rightward from bottom to top, and the upper ends of the left side wall 54 and the right side wall 55 are lower than the upper end of the rear side wall 51, so that the rear side wall 51 can be plugged and matched with the rear plate 111. Moreover, the inclined arrangement of the left side wall 54 and the right side wall 55 can facilitate the water-oil mixture to be guided into the oil collecting member 5.

[0030] The range hood further includes a first side plate 6 and a second side plate 7 capable of guiding the water-oil mixture on the left and right sides of the rear plate 111 to the oil collecting member 5, and the first side plate 6 and the second side plate 7 are both arranged on the rear plate 111. The first side plate 6 is arranged corresponding to the left side of the rear plate 111, and the second side plate 7 is arranged corresponding to the right side of the rear plate 111, and the bottoms of the first side plate 6 and the second side plate 7 are both located above the oil collecting member 5.

[0031] The first side plate 6 includes a first plate body 61 corresponding to the left part of the top plate 112 and a second plate body 62 corresponding to the left side plate 113, and the top of the second plate body 62 is connected to the left side of the first plate body 61. The second side plate 7 includes a third plate body 71 corresponding to the right part of the top plate 112 and a fourth plate body 72 corresponding to the right side plate 114, and the top of the fourth plate body 72 is connected to the right side of the third plate body 71. The first plate body 61 and the third plate body 71 extend left and right, and the second plate body 62 and the fourth plate body 74 extend up and down. The lower ends of the second plate body 62 and the fourth plate body 72 are both located above the oil collecting member 5, and the projections of the lower ends of the second plate body 62 and the lower ends of the fourth plate body 72 on the horizontal plane are both located within the projection range of the top opening of the oil collecting member 5 on the horizontal plane, so as to prevent the water-oil mixture flowing down from the lower ends of the second plate body 62 and the lower ends of the fourth plate body 72 from dripping to the outside of the oil collecting member 5.

[0032] The gaps between each plate body and the rear plate 111 are sealed by filling paraffin. After the first side plate 6 and the second side plate 7 are screwed to the rear plate 111, there is often a gap between the two side plates and the rear plate 111, which cannot completely block the water-oil mixture. Therefore, paraffin can be used for sealing. The melting point of paraffin is about 120°C, and it has good hydrophobicity and sealing and water-isolating effects, and has stable performance. After the first side plate 6 and the second side plate 7 are screwed to the rear plate 111, the assembly is heated to T1°C to ensure the fluidity of paraffin, and then wax is injected into the gap between the first side plate 6 and the second side plate 7 and the rear plate 111. High-temperature paraffin has fluidity, and the gap can be filled with paraffin to achieve a sealing effect. Finally, it enters the cooling area and is blown to room temperature with cold air.

[0033] See also Figure 4-5 The bottom of the oil collecting member 5 (on the bottom wall 56) is provided with an oil leakage port 52 capable of discharging the water-oil mixture in the oil collecting member 5. The range hood further comprises an oil cup 8 for receiving the water-oil mixture at the oil collecting member 5, and the oil cup 8 is located inside the housing 11 and below the oil leakage port 52.

[0034] The water-oil mixture generated after the cleaning device cleans the fan 3 flows downward along the rear side of the fan frame 2 and the rear plate 111 of the shell 11 through the oil guide 4. The first side plate 6 and the second side plate 7 arranged on the left and right block the water-oil mixture so that it all flows into the oil collecting member 5. The oil collecting member 5 is provided with an oil leakage port 52, and finally flows into the oil cup 8.

Claims

1. A range hood, comprising an air inlet assembly (1) and a fan frame (2) arranged on the air inlet assembly (1), the air inlet assembly (1) comprising a housing (11), the housing (11) comprising a rear plate (111), a fan (3) being arranged in the fan frame (2), the range hood further comprising a cleaning device for cleaning the fan (3), characterized in that: The range hood further comprises an oil guide member (4) capable of directly or indirectly guiding the water-oil mixture generated after the cleaning device cleans the fan (3) to the rear plate (111); the range hood further comprises an oil collecting member (5) capable of collecting the water-oil mixture flowing down from the rear plate (111); the top of the oil collecting member (5) is open; a notch (1111) is provided on the rear plate (111); the oil collecting member (5) comprises a rear side wall (51) located at the rear side; the rear side wall (51) passes through the notch (1111) upward from the rear plate (111) toward one side of the air inlet assembly (1) and is plugged into the notch (1111); the rear side wall (51) and the notch (1111) both extend along the width direction of the rear plate (111).

2. The range hood according to claim 1, characterized in that: The range hood further comprises a first side plate (6) and a second side plate (7) capable of guiding the water-oil mixture on the left and right sides of the rear plate (111) into the oil collecting member (5); the first side plate (6) and the second side plate (7) are both arranged on the rear plate (111); the first side plate (6) is arranged corresponding to the left side of the rear plate (111); the second side plate (7) is arranged corresponding to the right side of the rear plate (111); and the bottoms of the first side plate (6) and the second side plate (7) are both located above the oil collecting member (5).

3. The range hood according to claim 2, characterized in that: The housing (11) further comprises a top plate (112), a left side plate (113) and a right side plate (114); the first side plate (6) comprises a first plate body (61) arranged corresponding to the left part of the top plate (112) and a second plate body (62) arranged corresponding to the left side plate (113); the top of the second plate body (62) is connected to the left side of the first plate body (61); the second side plate (7) comprises a third plate body (71) arranged corresponding to the right part of the top plate (112) and a fourth plate body (72) arranged corresponding to the right side plate (114); the top of the fourth plate body (72) is connected to the right side of the third plate body (71); the lower ends of the second plate body (62) and the fourth plate body (72) are both located above the oil collecting member (5); the projections of the lower ends of the second plate body (62) and the fourth plate body (72) on a horizontal plane are both located within the projection range of the top opening of the oil collecting member (5) on the horizontal plane.

4. The range hood according to claim 3, characterized in that: The gaps between each plate body and the rear plate (111) are sealed by filling paraffin.

5. The range hood according to any one of claims 1 to 4, characterized in that: The bottom of the oil collecting member (5) is provided with an oil leakage port (52) capable of discharging the water-oil mixture in the oil collecting member (5).

6. The range hood according to claim 5, characterized in that: The range hood further comprises an oil cup (8) for receiving the water-oil mixture at the oil collecting member (5); the oil cup (8) is located on the inner side of the housing (11) and below the oil leakage port (52).

7. The range hood according to any one of claims 1 to 4, characterized in that: The oil collecting member (5) further comprises a front side wall (53), a left side wall (54), a right side wall (55) and a bottom wall (56) all of which are located in the air inlet assembly (1); the front side wall (53) is arranged at intervals on the front side of the rear side wall (51); the left side wall (54) is located between the left side ends of the front side wall (53) and the rear side wall (51); the right side wall (55) is located between the right side ends of the front side wall (53) and the rear side wall (51); the bottom wall (56) is located between the lower ends of the upper side walls; the upper ends of the left side wall (54) and the right side wall (55) are both lower than the upper end of the rear side wall (51).

8. The range hood according to claim 7, characterized in that: The width of the rear side wall (51) is greater than that of the front side wall (53); the left side wall (54) gradually inclines to the left from bottom to top; and the right side wall (55) gradually inclines to the right from bottom to top.

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