A smoke collection component for a range hood

Abstract

This utility model relates to the field of range hood technology, and more specifically to a smoke collection component for a range hood, comprising: a smoke collection cavity, a main board, and a smoke guide plate. The smoke collection cavity has an inlet at the lower end and an outlet at the top. The main board is installed at the inlet of the smoke collection cavity, and the smoke guide plate is installed below the main board. A negative pressure adsorption port is formed between the smoke guide plate and the main board to allow smoke to flow into the smoke collection cavity. The smoke guide plate includes a plate body, and a convex region recessed towards the smoke collection cavity is provided in the middle of the plate body. A negative pressure adjustment hole penetrating along the thickness direction of the plate body is provided at the top of the convex region. This utility model optimizes the structure of the smoke guide plate, which helps to reduce the dispersion of oil fumes, thereby improving the absorption effect of oil fumes.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and more specifically to a smoke collection component for a range hood. Background Technology

[0002] Range hoods are an indispensable appliance in modern kitchens. Their main function is to use negative pressure to extract cooking fumes, keeping the kitchen air clean. Existing range hoods typically include a smoke collection duct with a built-in fan, a filter, and a control system. Below the smoke collection duct is a smoke collection chamber, through which the cooking fumes are collected and then discharged through the smoke collection duct.

[0003] Existing range hoods have poor smoke collection and fumes that are easily dispersed, resulting in limited smoke extraction. Utility Model Content

[0004] The purpose of this invention is to solve the aforementioned problems of range hoods and to provide a smoke collection component for range hoods. With this structure, the smoke can be better guided into the smoke collection channel, thus optimizing the smoke extraction effect.

[0005] This utility model provides a smoke collection component for a range hood, which adopts the following technical solution: A smoke collection assembly for a range hood includes: The system comprises a smoke collection chamber, a main board, and a smoke guide plate. The smoke collection chamber has an inlet at the lower end and an outlet at the top. The main board is installed at the inlet of the smoke collection chamber, and the smoke guide plate is installed below the main board. A negative pressure adsorption port for the smoke to flow into the smoke collection chamber is formed between the smoke guide plate and the main board. The smoke guide plate includes a plate body, and an outwardly protruding area protruding away from the smoke collection chamber is provided in the middle of the plate body. The outwardly protruding area includes a bottom wall and two side walls. A negative pressure adjustment hole penetrating along the thickness direction of the plate body is opened on the side wall of the outwardly protruding area.

[0006] Preferably, the negative pressure regulating hole is strip-shaped and is arranged along the length of the sidewall.

[0007] Preferably, the convex region is inclined, and the oil guiding height (i.e., the height of the upper surface of the bottom wall) of the convex region gradually decreases from the front end to the rear end of the range hood.

[0008] Preferably, the system also includes an oil filter screen, on which a negative pressure regulating strip is provided. The projection position of the negative pressure regulating strip corresponds to (just covers or has a projection area larger than the area where the convex region is located) the convex region.

[0009] Preferably, the filter screen comprises two screens, with a negative pressure regulating strip located between the two screens, and the two screens forming an angle α of less than 180° and greater than 90°.

[0010] Preferably, the mesh of the mesh body is diamond-shaped.

[0011] Preferably, one diagonal of the diamond-shaped mesh of the mesh body is parallel to the negative pressure regulating strip.

[0012] Preferably, a deceleration structure is provided on the lower surface of the plate.

[0013] Preferably, the deceleration structure is a dotted distribution of concave or convex points on the lower surface of the plate.

[0014] Preferably, the deceleration structure is a strip-shaped groove or ridge provided on the lower surface of the plate.

[0015] Preferably, the smoke guide plate is connected to the main board by a connecting assembly, which includes a fixing base and a negative pressure adjusting component. The fixing base is connected to the main board, and the upper end of the negative pressure adjusting component is connected to the fixing base, while the lower end is connected to the smoke guide plate.

[0016] Preferably, the negative pressure regulating component includes a supporting and fixing part and a connecting and adjusting part. The supporting and fixing part is located near the front end of the smoke guide plate, and the connecting and adjusting part is located behind the supporting and fixing part. The connecting and adjusting part is rotatably connected to the fixing seat.

[0017] Preferably, the upper surface of the smoke guide plate is provided with an adjustment structure at the front to adjust the distribution of negative pressure at the negative pressure adsorption port.

[0018] Preferably, the motherboard includes a top plate, a front plate, and a rear plate, with the front plate having a built-in control component and the rear plate having an oil collection trough below it.

[0019] Preferably, the adjustment structure is a connecting strip structure with a ridge, and both ends of the adjustment structure are respectively connected to the adjacent support fixing part.

[0020] Preferably, the connecting adjustment part includes a horizontal part and a vertical part. The horizontal part is connected to the smoke guide plate, and the end of the horizontal part is connected to the support fixing part. The vertical part is rotatably connected to the fixing seat through a movable adjustment structure.

[0021] Preferably, the movable adjustment structure includes an adjustment groove formed on the fixed base and an adjustment pin passing through the connecting adjustment part, the end of the adjustment pin being slidably embedded in the adjustment groove.

[0022] Preferably, the adjustment groove includes a high point and a low point, and the height of the adjustment groove supporting the adjustment pin gradually decreases along the high point to the low point. A limiting boss is provided at the groove opening of the adjustment groove.

[0023] By implementing the above technical solution, this utility model has the following beneficial effects: 1. This utility model optimizes the structure of the smoke guide plate, which helps to reduce the dispersion of oil fumes and thus improve the absorption effect of oil fumes, and is especially suitable for ultra-thin range hoods.

[0024] 2. This utility model optimizes the structure of the oil filter screen, enabling the oil fumes to be quickly guided into the smoke collection channel when they reach the filter screen. It also reduces the speed and impact force of the oil fumes when they reach the filter screen, greatly reducing the suction noise of the oil fumes. At the same time, it can guide the grease on the filter screen to both sides, avoiding the large accumulation and blockage of grease in the central area.

[0025] 3. This utility model optimizes the distribution of negative pressure and improves the smoking efficiency by designing the connection component between the main board and the smoke guide plate. At the same time, it ensures that the smoke guide plate does not interfere with the rear end plate of the main board when it rotates.

[0026] 4. This utility model improves the structure of the smoke guide plate, enabling a negative pressure adsorption port to be formed between the main board and the smoke guide plate, resulting in a better negative pressure adsorption effect. Attached Figure Description

[0027] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the structure of a range hood according to an embodiment of the present invention; Figure 2 This is a bottom view schematic diagram of a range hood according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the smoke guide plate according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the filter oil screen according to an embodiment of the present invention; Figure 5 This is a plan view of the oil filter screen according to an embodiment of the present invention; Figure 6 This is a partial structural schematic diagram of the connecting component according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the negative pressure adjusting component of the connecting assembly in Embodiment 1 of this utility model; Figure 8 This is a schematic diagram of the structure of the fixing base in Embodiment 1 of this utility model. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0029] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this instruction manual are defined relative to the structure shown in the accompanying drawings or the usage scenario of the range hood. Therefore, they may vary depending on its location and usage. Consequently, these or other directional terms should not be interpreted as restrictive. Example 1

[0030] This embodiment provides a smoke inlet structure for use in a range hood. See [link to relevant documentation] for this smoke inlet structure. Figure 1 , 2 The system includes an upper smoke collection chamber 100, which has a smoke inlet at the lower end and a smoke outlet at the top. A fan assembly is arranged within the smoke collection chamber 100 to provide power for generating negative pressure; this part of the structure is the same as that used in the prior art. An oil filter screen 200 is installed at the outlet of the smoke collection chamber 100 to filter the oil fumes entering the chamber.

[0031] The smoke inlet structure of this embodiment also includes a main board 300, which is installed at the inlet of the smoke collection chamber 100. The main board 300 includes a top plate 301, a front plate 302, and a rear plate 303. An opening is provided in the middle of the top plate 301, which corresponds to the inlet of the smoke collection chamber 100. The front plate 302 has a built-in control component, and an oil collection groove 305 is fixedly installed at the lower end of the rear plate 303.

[0032] The smoke inlet structure in this embodiment also includes a smoke guide plate 400, which is located below the top plate 301 of the main board 300 and is a thin plate structure. See [reference needed]. Figure 3The system comprises a roughly flat plate with a protruding area 402 extending from the center of the plate away from the top plate 301. This protruding area 402 is strip-shaped, extending from the front plate 302 to the rear plate 303. The protruding area 402 includes a bottom wall and two side walls. A strip-shaped negative pressure regulating hole 402a is formed on the side walls along their length and extends through the plate in the thickness direction. The protruding area 402 is inclined, with the height of the upper surface of the bottom wall gradually decreasing from the front plate 302 to the rear plate 303, allowing condensed grease to flow smoothly along the bottom wall surface into the oil collection tank 305. When the fumes reach the guide plate 400, their velocity is very high, making them easily dispersed over a wider area, resulting in poor fume extraction. The protruding area 402 slows down the speed of oil fumes as they reach the smoke guide plate 400, reducing their diffusion range. Simultaneously, this protruding area 402 can collect the oil fumes, which are then drawn in by the negative pressure at the negative pressure regulating hole 402a. Combined with the negative pressure adsorption port, this achieves efficient smoke extraction. The negative pressure regulating hole 402a on the protruding area 402 is located on the side wall, which provides better guidance for oil fumes compared to having it on the bottom wall. If it were located on the bottom wall, oil fumes would easily accumulate at the junction of the side wall and the plate surface, preventing timely absorption and causing disturbance to the smoke, thus negatively impacting smoke extraction.

[0033] The two sidewalls of the convex region 402 gradually expand outward from bottom to top, which helps to guide some of the oil fumes out through the negative pressure regulating hole 402a.

[0034] In another specific embodiment, the structure of the oil filter 200 includes a body, see [link to previous embodiment]. Figure 4 The main body includes two mesh panels 201 (left and right) and a negative pressure regulating strip 202 connecting the two mesh panels 201. The negative pressure regulating strip 202 is elongated and extends from the front panel 302 to the rear panel 303 of the range hood, located in the center of the main body. The two mesh panels 201 are symmetrical about the negative pressure regulating strip 202. The two mesh panels 201 are respectively connected to two sides along the length of the negative pressure regulating strip 202, and the mesh panels form an angle α between them that is less than 180° and greater than 90°. Preferably, α is greater than 150° and less than 180°. If the angle is too large, it will not be able to effectively gather the fumes; if it is too small, it will block the fumes from entering, thus reducing the smoke extraction effect.

[0035] This design of the oil filter effectively gathers the sucked-up fumes, guiding them quickly into the collection channel. Simultaneously, this structure reduces the speed and impact of the fumes reaching the filter, minimizing fume dispersion and significantly reducing suction noise. Furthermore, this structure guides grease to the sides of the filter, preventing excessive accumulation and blockage in the central area. The projection of the central negative pressure regulating strip 202 corresponds to the negative pressure regulating hole on the protruding area, meaning the strip is directly above it, preventing grease from dripping onto the hole.

[0036] In this embodiment, see Figure 5 The mesh of the mesh body 201 is diamond-shaped, and one diagonal of the diamond-shaped mesh is parallel to the negative pressure regulating bar 202.

[0037] In another specific embodiment, a deceleration structure is provided on the lower surface of the plate, which is a strip-shaped distribution of raised strips. The deceleration structure can also be a dot-shaped distribution of raised dots. This deceleration structure significantly reduces the speed at which oil fumes reach the plate surface, thereby reducing the range of oil fume diffusion, minimizing oil fume dispersion, and facilitating oil fume absorption.

[0038] In another specific embodiment, the smoke guide plate 400 and the main board 300 are connected by a connecting component 500, thereby providing a negative pressure adsorption port 401 between the smoke guide plate 400 and the main board 300 for the smoke to flow into the smoke collection cavity 100. The negative pressure adsorption port 401 mainly includes a front negative pressure adsorption port, a left negative pressure adsorption port, and a right negative pressure adsorption port (here, front, left, and right are defined with the front end plate as the front). The rear end of the smoke guide plate 400 overlaps the edge of the oil collection tank 305, and the end extends directly above the oil collection tank 305 to guide the oil on the smoke guide plate 400 into the oil collection tank 305 for collection.

[0039] In this embodiment, the structure of the connecting component 500 has been specially designed, see [link to documentation]. Figure 6 The connection assembly 500 includes two parts: a fixing seat 501 and a negative pressure adjusting component 502. The fixing seat 501 is fixedly connected to the lower surface of the top plate 301 of the main board 300. There are two fixing seats 501, which are arranged near the left and right sides of the top plate 301 respectively.

[0040] The upper end of the negative pressure regulating component 502 is connected to the fixed base 501, and the lower end is fixedly connected to the smoke guide plate 400. Two negative pressure regulating components 502 are provided: a left negative pressure regulating component and a right negative pressure regulating component, corresponding to the two fixed bases 501 respectively. The function of the negative pressure regulating component 502 is twofold: firstly, to connect the fixed base 501 and the smoke guide plate 400, and to cooperate with the fixed base 501 to control the distance between the top plate 301 and the smoke guide plate 400; secondly, to adjust the distribution of negative pressure at the negative pressure adsorption port 401.

[0041] See Figure 7 Each negative pressure regulating component 502 includes a supporting and fixing part 5021 and a connecting and adjusting part 5022. The supporting and fixing part 5021 is located near the front end of the smoke guide plate 400, and is nearly cylindrical in shape. Its top end can be inserted into a socket on the fixing base 501 for connection, and its bottom end is fixedly connected to the smoke guide plate 400 or integrally connected. An adjusting structure 5023 is provided between the supporting and fixing parts of the two negative pressure regulating components 502 to adjust the distribution of the adsorption negative pressure entering from the negative pressure adsorption port 401 at the front end of the smoke guide plate 400. The adjusting structure 5023 is a connecting strip structure with a ridge 5023a in the middle. The ridge allows for differentiated distribution of negative pressure at each negative pressure adsorbent location, increasing local negative pressure while decreasing negative pressure in other areas. This optimizes the negative pressure adsorption of oil fumes, reduces the diffusion of oil fumes, and enhances the concentrated adsorption effect. The adjusting structure 5023 is generally higher than the front guide edge 402 or its lowest point is flush with the guide edge 402.

[0042] The connecting adjustment part 5022 is located behind the supporting fixing part 5021. It is fixedly connected to the smoke guide plate 400 and in contact with the supporting fixing part 5021. It can be connected or not connected, and can be separate or integrated. The connecting adjustment part 5022 includes a horizontal part 5022a and a vertical part 5022b. The horizontal part 5022a is fixedly connected to the smoke guide plate 400. The height of the two ends of the horizontal part 5022a is greater than the height of the middle part. This arrangement allows for targeted distribution of the adsorption negative pressure of the side negative pressure adsorption port 401, increasing the local (middle) adsorption negative pressure and improving the side adsorption efficiency of the flue gas. The lower part of the supporting fixing part 5021 is also thickened, which is beneficial for adjusting the negative pressure in conjunction with the adjustment structure and the horizontal part of the connecting adjustment part 5022. The horizontal part 5022a is higher than the guide edge 402 or its lowest point is flush with the guide edge 402.

[0043] The top end of the vertical portion 5022b of the connecting adjustment part 5022 is movably connected to the fixed base 501. See [reference needed]. Figure 8The specific structure is as follows: a groove is provided at the corresponding position of the fixed base 501, and an adjustment groove 5011 is provided on the inner wall of the groove. The adjustment pin passes through the top of the vertical part of the connecting adjustment part 5022, and both ends of the adjustment pin are slidably embedded in the adjustment groove 5011. The adjustment groove 5011 includes a high point and a low point. Along the high point to the low point, the height of the support position of the adjustment groove 5011 for the adjustment pin gradually decreases. A limiting boss is provided at the groove opening of the adjustment groove 5011. Since the rear end of the smoke guide plate 400 needs to receive the oil collection groove 305, interference will occur between the smoke guide plate 400 and the rear end plate 303 when the smoke guide plate 400 is rotated to adjust its angle or disassembled. In this embodiment, it is set up in such a way that interference between the smoke guide plate 400 and the rear end plate 303 is avoided when the smoke guide plate 400 is rotated. During operation, first press down the front end of the smoke guide plate with a little force to make the support fixing part 5021 disengage from the fixing seat 501. At this time, under the action of gravity of the smoke guide plate 400, the adjusting pin moves forward and downward along the adjusting groove, so that the smoke guide plate 400 can be rotated at will, thus avoiding interference from the rear end plate 303 and the oil collection groove 305.

[0044] In this embodiment, the negative pressure regulating component 502 has a hollow structure, which can save materials, reduce weight, and make the smoke intake system lighter.

Claims

1. A smoke collecting assembly of a range hood, comprising a smoke guide plate (400), characterized in that, The smoke guide plate (400) includes a plate body, and an outwardly protruding area (402) is provided in the middle of the plate body, protruding away from the smoke collection cavity (100). The outwardly protruding area (402) includes a bottom wall and two side walls. A negative pressure adjustment hole (402a) is provided on the side wall of the outwardly protruding area (402) through the thickness direction of the plate body.

2. The smoke assembly of claim 1, wherein The negative pressure regulating hole (402a) is strip-shaped and is arranged along the length of the sidewall.

3. The smoke assembly of claim 1 or 2, wherein, The convex region (402) is inclined and the bottom wall height of the convex region (402) gradually decreases from the front end to the rear end of the range hood.

4. The smoke assembly of claim 1, wherein It also includes a smoke collection chamber (100) and a main board (300). The smoke collection chamber (100) has an inlet at the lower end and an outlet at the top. The main board (300) is installed at the inlet of the smoke collection chamber (100). The smoke guide plate (400) is installed below the main board (300). A negative pressure adsorption port (401) is formed between the smoke guide plate (400) and the main board (300) to allow the smoke to flow into the smoke collection chamber (100).

5. The smoke assembly of claim 4, wherein, It also includes an oil filter screen (200), on which a negative pressure regulating strip (202) is provided, the projection position of which corresponds to the convex region (402).

6. The smoke assembly of claim 5, wherein, The filter oil screen (200) includes two screens (201), and the negative pressure regulating strip (202) is located between the two screens (201), and the two screens (201) form an included angle α of less than 180° and greater than 90°.

7. The smoke assembly of claim 6, wherein The mesh of the mesh body (201) is rhomboid in shape.

8. The smoke assembly of claim 6, wherein, One diagonal of the diamond-shaped mesh of the mesh body (201) is parallel to the negative pressure regulating strip (202).

9. The smoke assembly of claim 4, wherein, The smoke guide plate (400) is connected to the main board (300) by a connecting assembly (500). The connecting assembly (500) includes a fixing seat (501) and a negative pressure adjusting component (502). The fixing seat (501) is connected to the main board (300). The upper end of the negative pressure adjusting component (502) is connected to the fixing seat (501), and the lower end is connected to the smoke guide plate (400).

10. The smoke assembly of claim 9, wherein, The negative pressure regulating component (502) includes a supporting fixing part (5021) and a connecting adjusting part (5022). The supporting fixing part (5021) is disposed near the front end of the smoke guide plate (400), and the connecting adjusting part (5022) is located behind the supporting fixing part (5021). The connecting adjusting part (5022) is rotatably connected to the fixing seat (501).

Images