A range hood with grease separation function

Abstract

This utility model relates to a range hood with grease separation function. It includes a main unit and a filter assembly. The filter assembly is composed of a front filter, a middle filter, and a rear filter assembled sequentially from front to back. The front filter has a front enclosure, and the rear filter has a rear enclosure. The rear enclosure and the front enclosure face each other, and the front and rear filters are closed together. The rear enclosure is embedded within the front enclosure. A locking protrusion is provided on the inner surface of the front enclosure, and a locking groove is provided on the outer surface of the rear enclosure corresponding to the locking protrusion. The locking groove and the locking protrusion engage in a convex-concave fit. The front, middle, and rear filters of this utility model repeatedly and thoroughly disperse the grease in the fumes, causing the grease to adhere to the filter screens. Finally, the grease is discharged from the filter assembly through the grease outlet. Therefore, this utility model has a high grease separation rate and excellent fume filtration effect.

Description

Technical Field

[0001] This utility model relates to the technical field of range hoods, and in particular to a range hood with grease separation function. Background Technology

[0002] A range hood, also known as a kitchen exhaust fan, is a kitchen appliance used to purify the kitchen environment. It is installed above the kitchen stove and can quickly remove the waste from the stove and the harmful fumes produced during cooking, expelling them outdoors. At the same time, it condenses and collects the fumes, reducing pollution, purifying the air, and providing safety protection against poisoning and explosion. Existing range hoods are generally equipped with single-layer, double-layer, or multi-layer filters to filter fumes. However, existing range hoods have the following problems: (1) The oil filtration effect between the multi-layer filters is poor, and fumes can easily pass through the filter holes, resulting in insufficient oil fume filtration and low grease separation. (2) The multi-layer filters are stacked together, and each filter is installed independently on the range hood, making disassembly and assembly inconvenient. Utility Model Content

[0003] The purpose of this invention is to provide a range hood with high grease separation efficiency and grease separation function.

[0004] The purpose of this utility model is achieved as follows:

[0005] A range hood with grease separation function includes a main unit and a filter assembly. The main unit has a fume extraction port, and the filter assembly is detachably mounted at the fume extraction port. An grease collection tank is located below the filter assembly on the main unit. The filter assembly is composed of a front filter, a middle filter, and a rear filter assembled sequentially from front to back. The front filter has a front enclosure, and the rear filter has a rear enclosure. The rear enclosure and the front enclosure face each other, and the front and rear filters are closed together, with the rear enclosure embedded in the front enclosure. Inside, the middle filter is located between the front and rear filters. A locking protrusion is provided on the inner surface of the front wall, and a locking groove is provided on the outer surface of the rear wall corresponding to the locking protrusion. The locking groove and the locking protrusion engage in a convex-concave fit. The front, middle, and rear filters are respectively provided with front filter holes, middle filter holes, and rear filter holes. The diameter of the middle filter hole is smaller than that of the front and rear filter holes. The middle filter holes are offset from the front filter holes, the middle filter holes are offset from the rear filter holes, and the front filter holes are offset from the rear filter holes. The filter assembly of this utility model uses a front, middle, and rear filter to repeatedly and thoroughly disperse the grease in the fumes. The grease then adheres to the filter screen, and finally, the grease is discharged from the filter assembly through the oil outlet. Therefore, this utility model has a high grease separation degree and a good fume filtration effect. The locking groove and the locking protrusion engage in a convex-concave fit, ensuring a secure connection between the front and rear filters to form a filter assembly, which is convenient for installation.

[0006] The present invention can be further improved in the following ways.

[0007] The locking protrusion is bowl-shaped, and the locking groove is bowl-shaped, so the locking protrusion and locking groove are easy to engage and disengage, making it convenient to install and remove the front and rear filters.

[0008] The front filter and the rear filter are respectively equipped with a first handle and a second handle, which makes it convenient for users to quickly disassemble and assemble the front and rear filters and to clean the filter assembly.

[0009] The locking protrusion is formed by the indentation of the front wall towards the inside of the front filter screen, and the locking groove is formed by the indentation of the rear wall towards the inside of the rear filter screen. Therefore, the locking protrusion and locking groove are easy to process and have low cost.

[0010] The middle filter is square-shaped. Both its left and right edges have forward-extending front positioning plates that abut against the front filter. The upper and lower edges of the middle filter both have rearward-extending rear positioning plates that abut against the rear filter. The rear positioning plates limit the distance between the middle and rear filters, while the front positioning plates limit the distance between the middle and front filters.

[0011] The front and rear walls, as well as the rear positioning plate, are respectively equipped with a lower oil drain port, a middle oil drain port, and an upper oil drain port. These ports are arranged sequentially from top to bottom, and staggered from front to back. Therefore, the oil on the three filter layers can flow continuously downwards and forwards to the front wall and the lower oil drain port.

[0012] The front wall, front positioning plate, rear positioning plate, rear wall, and front positioning plate are respectively provided with a first flange, a second flange, a third flange, and a fourth flange, thereby effectively preventing the edges of the front wall, rear positioning plate, front positioning plate, and rear wall from cutting the user.

[0013] The top and bottom of the fume extraction outlet are respectively provided with mounting grooves for fixing the filter assembly. The top and bottom of the mounting grooves are respectively provided with upper and lower baffles. The top and bottom of the filter assembly are respectively embedded in the top and bottom of the mounting grooves. The upper and lower baffles prevent the filter assembly from falling out of the fume extraction outlet.

[0014] The beneficial effects of this utility model are as follows:

[0015] The filter assembly of this utility model consists of a front filter, a middle filter, and a rear filter. These filters repeatedly and thoroughly disperse the grease in the fumes, allowing the grease to adhere to the filter screens. Finally, the grease is discharged from the filter assembly through the lower oil outlet. This utility model uses a locking groove and a locking protrusion to ensure a secure connection between the front and rear filters, forming a filter assembly that is easy to install. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of a range hood with grease separation function according to Embodiment 1 of this utility model.

[0017] Figure 2 This is a structural schematic diagram of the range hood with grease separation function in Embodiment 1 of this utility model from another angle.

[0018] Figure 3 This is a front view of a range hood with grease separation function according to Embodiment 1 of this utility model.

[0019] Figure 4 yes Figure 3 Sectional view at point AA.

[0020] Figure 5 This is an exploded view of a range hood with grease separation function according to Embodiment 1 of this utility model.

[0021] Figure 6 This is a schematic diagram of the filter assembly of this utility model.

[0022] Figure 7 This is a structural schematic diagram of the filter assembly of this utility model from another angle.

[0023] Figure 8 This is a front view of the filter assembly of this utility model.

[0024] Figure 9 yes Figure 8 Sectional view at point BB.

[0025] Figure 10 yes Figure 8 Sectional view at point CC.

[0026] Figure 11 yes Figure 9 Enlarged view of point D in the middle.

[0027] Figure 12 yes Figure 10 Enlarged view of point E in the middle.

[0028] Figure 13 This is an exploded view of the filter assembly of this utility model. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Example 1, as Figures 1 to 13As shown, a range hood with grease separation function includes a main unit 1 and a filter assembly 3. The main unit 1 is equipped with an exhaust fan, an exhaust duct, an air outlet, and a fume extraction port 2. The air outlet and the fume extraction port 2 are respectively located at both ends of the exhaust duct. The filter assembly 3 is detachably installed at the fume extraction port 2. The main unit 1 has an oil collection tank 7 below the filter assembly 3. The filter assembly 3 is composed of a front filter 31, a middle filter 32, and a rear filter 33 assembled from front to back. The front filter 31 has a front enclosure 34 around its periphery, and the rear filter 33 has a rear enclosure 36 around its periphery. The rear enclosure 36 and the front enclosure 34 face each other. The front filter 31 and the rear filter 33 are closed together. Embedded within the front enclosure 34, the middle filter 32 is located between the front filter 31 and the rear filter 33. The inner surface of the front enclosure 34 is provided with a locking protrusion 38, and the outer surface of the rear enclosure 36 is provided with a locking groove 39 corresponding to the position of the locking protrusion 38. The locking groove 39 and the locking protrusion 38 are in a convex-concave fit. The front filter 31, the middle filter 32 and the rear filter 33 are respectively provided with a front filter hole 311, a middle filter hole 312 and a rear filter hole 313. The diameter of the middle filter hole 312 is smaller than the diameter of the front filter hole 311 and the diameter of the rear filter hole 313. The middle filter hole 312 is misaligned with the front filter hole 311, the middle filter hole 312 is misaligned with the rear filter hole 313, and the front filter hole 311 is misaligned with the rear filter hole 313.

[0031] This is a more specific technical solution of the present invention.

[0032] The locking protrusion 38 is bowl-shaped, and the locking groove 39 is bowl-shaped groove. Therefore, the locking protrusion 38 and the locking groove 39 are easy to engage and disengage, making it convenient to install and remove the front and rear filters 33.

[0033] The surface of the front filter 31 and the surface of the rear filter 33 are respectively provided with a first handle 314 and a second handle 315, so as to facilitate users to quickly disassemble and install the front and rear filters 33 and to facilitate cleaning the filter assembly 3.

[0034] The locking protrusion 38 is formed by the indentation of the front wall 34 into the front filter 31, and the locking groove 39 is formed by the indentation of the rear wall 36 into the rear filter 33. Therefore, the locking protrusion 38 and the locking groove 39 are easy to process and have low cost.

[0035] The middle filter 32 is square in shape. Both its left and right edges are provided with forward-extending front positioning plates 316, which abut against the front filter 31. Both the upper and lower edges of the middle filter 32 are provided with rearward-extending rear positioning plates 35, which abut against the rear filter 33. The rear positioning plates 35 and front positioning plates abut against the rear and front filters respectively, positioning the middle filter 32. The rear positioning plate 35 also limits the distance between the middle filter 32 and the rear filter 33, and the front positioning plate 316 also limits the distance between the middle filter 32 and the front filter 31.

[0036] The front enclosure 34, the rear enclosure 36, and the rear positioning plate 35 are respectively provided with a lower oil outlet 317, a middle oil outlet 319, and an upper oil outlet 318. The upper oil outlet 318, the middle oil outlet 319, and the lower oil outlet 317 are arranged sequentially from top to bottom, and the lower oil outlet 317, the middle oil outlet 319, and the upper oil outlet 318 are arranged in a staggered manner from front to back.

[0037] The front wall 34, the rear positioning plate 35, the rear wall 36 and the front positioning plate 316 are respectively provided with a first flange 310, a second flange 320, a third flange 321 and a fourth flange 322, thereby effectively preventing the edges of the front wall 34, the rear positioning plate 35 and the rear wall 36 from cutting the user.

[0038] The top and bottom of the fume extraction port 2 are respectively provided with mounting grooves 21 for fixing the filter assembly 3. The top and bottom of the mounting groove 21 are respectively provided with an upper baffle 22 and a lower baffle 23. The top and bottom of the filter assembly 3 are respectively embedded in the top and bottom of the mounting groove 21.

[0039] The working principle of this utility model is as follows:

[0040] When this utility model is in operation, the exhaust fan starts, and the exhaust duct 8 generates negative pressure. The oil fumes are drawn into the exhaust duct through the filter assembly 3. When the oil fumes pass through the filter assembly 3, due to the different pore sizes of the front filter 31, middle filter 32, and rear filter 33, and the staggered arrangement of the filter holes, the grease in the oil fumes is fully dispersed. The grease adheres to the front filter, middle filter, and rear filter, and then flows downward. The grease on the middle filter 32 flows downward to the rear positioning plate 35, and then flows downward from the upper oil outlet 318 to the rear enclosure wall 36. The grease on the rear filter 33 flows downward to the rear enclosure wall 36, and then flows downward from the middle oil outlet 319 to the front enclosure wall 34. The grease on the front filter 31 flows downward to the front enclosure wall 34, and then flows out of the filter assembly 3 from the lower oil outlet 317, finally flowing into the oil collection tank 7.

Claims

1. A range hood with oil and fat separating function, comprising a main machine (1) and a filter screen assembly (3), the main machine (1) is provided with a smoke suction port (2), and the filter screen assembly (3) is detachably arranged at the smoke suction port (2), characterized in that, The filter assembly (3) is composed of a front filter (31), a middle filter (32), and a rear filter (33) assembled from front to back. The front filter (31) has a front enclosure (34) around its periphery, and the rear filter (33) has a rear enclosure (36) around its periphery. The rear enclosure (36) and the front enclosure (34) are arranged facing each other. The front filter (31) and the rear filter (33) are closed together, and the rear enclosure (36) is embedded in the front enclosure (34). The middle filter (32) is located between the front filter (31) and the rear filter (33). The inner surface of the front enclosure (34) is provided with a locking protrusion (38), and the outer surface of the rear enclosure (36) is provided with a locking protrusion (38). A locking groove (39) is provided at the position corresponding to the locking protrusion (38). The locking groove (39) and the locking protrusion (38) are in concave-convex cooperation. The front filter (31), the middle filter (32) and the rear filter (33) are respectively provided with a front filter hole (311), a middle filter hole (312) and a rear filter hole (313). The diameter of the middle filter hole (312) is smaller than the diameter of the front filter hole (311) and the diameter of the rear filter hole (313). The middle filter hole (312) is offset from the front filter hole (311), the middle filter hole (312) is offset from the rear filter hole (313), and the front filter hole (311) is offset from the rear filter hole (313).

2. The range hood having a grease separation function according to claim 1, wherein The locking protrusion (38) is bowl-shaped, and the locking groove (39) is bowl-shaped.

3. The extractor hood with the fat separating function according to claim 2, characterized in that, The locking protrusion (38) is formed by the front wall (34) recessing into the inside of the front filter (31), and the locking groove (39) is formed by the rear wall (36) recessing into the inside of the rear filter (33).

4. The extractor hood with a fat separating function according to claim 1, characterized in that, The surface of the front filter (31) and the surface of the rear filter (33) are respectively provided with a first handle (314) and a second handle (315).

5. The range hood having a grease separation function according to claim 1, wherein the middle cover is formed in a shape of a circular arc. The filter screen (32) is square in shape. The left and right edges of the middle filter screen (32) are provided with forward-extending front positioning plates (316), which abut against the front filter screen (31). The upper and lower edges of the middle filter screen (32) are provided with rear-extending rear positioning plates (35), which abut against the rear filter screen (33).

6. The extractor hood with the fat separating function according to claim 5, characterized in that, The front enclosure (34), the rear enclosure (36), and the rear positioning plate (35) are respectively provided with a lower oil drain port (317), a middle oil drain port (319), and an upper oil drain port (318). The upper oil drain port (318), the middle oil drain port (319), and the lower oil drain port (317) are arranged sequentially from top to bottom, and the lower oil drain port (317), the middle oil drain port (319), and the upper oil drain port (318) are arranged in a staggered manner from front to back.

7. The range hood having a grease separating function according to claim 5, wherein the grease separating unit is provided with a plurality of grease separating members. The front wall (34), the rear positioning plate (35), the rear wall (36) and the front positioning plate (316) are respectively provided with a first flange (310), a second flange (320), a third flange (321) and a fourth flange (322).

8. The range hood with grease separation function according to claim 1, characterized in that, The top and bottom of the fume extraction port (2) are respectively provided with mounting grooves (21) for fixing the filter assembly (3). The top and bottom of the mounting groove (21) are respectively provided with an upper baffle (22) and a lower baffle (23). The top and bottom of the filter assembly (3) are respectively embedded in the top and bottom of the mounting groove (21).

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