Connecting structure of smoke deflector and range hood with connecting structure

Abstract

The invention relates to the technical field of range hoods, in particular to a connecting structure of a smoke deflector and a range hood with the connecting structure, the connecting structure is used for connecting the smoke deflector and a main board of the range hood, and the connecting structure comprises a connecting fixing strip connected with the main board of the range hood; the negative pressure adjusting part is used for adjusting distribution of adsorption negative pressure, the lower end of the negative pressure adjusting part is connected with the smoke guide plate, and the top end of the negative pressure adjusting part is connected with the connecting and fixing strip. Through the design of the connecting structure between the main plate and the smoke guide plate, the distribution of negative pressure is optimized, and the smoke suction efficiency is improved. Specifically, the structure of the negative pressure adjusting part is improved, the front connecting part is additionally arranged, and the convex ridge is arranged on the front connecting part, so that the strength of the structure can be enhanced, more importantly, airflow can be adjusted, the distribution of negative pressure can be optimized, oil smoke is prevented from overflowing, and the adsorption effect of the oil smoke is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen equipment, and more particularly to a connection structure of a smoke guide plate and a range hood having the connection structure. Background Art

[0002] Range hoods are an essential appliance in modern kitchens. Their primary function is to extract cooking fumes through negative pressure, maintaining clean kitchen air. Existing range hoods typically include a smoke collection duct with a built-in fan assembly, a filter, a control system, and other components.

[0003] Existing designs also suffer from uneven negative pressure distribution. While the negative pressure distribution at the range hood's intake port is relatively uniform, it's not adjusted based on actual usage. This results in insufficient suction efficiency in the core area and waste of negative pressure in non-core areas. Due to the irrational design of the negative pressure zone, oil smoke easily diffuses in non-core areas, reducing overall suction efficiency. Summary of the Invention

[0004] The purpose of the present invention is to solve the above-mentioned problems existing in range hoods and to provide a connection structure of a smoke guide plate and a range hood having the connection structure. The system optimizes negative pressure distribution and improves smoking efficiency.

[0005] A first aspect of the present invention provides a connection structure for a smoke guide plate, which adopts the following technical solution:

[0006] A connection structure for a smoke guide plate, used to connect the smoke guide plate to a main board of a range hood, the connection structure comprising:

[0007] Connect the fixing strip to the mainboard of the range hood;

[0008] The negative pressure regulating member is used to regulate the distribution of the adsorption negative pressure. The lower end of the negative pressure regulating member is connected to the smoke guide plate, and the top end is connected to the connecting and fixing strip.

[0009] Preferably, the negative pressure regulating member includes two rear supporting parts located at the rear side, two front supporting parts located at the front side, a side connecting part located between the rear supporting parts and the front supporting parts, and a front connecting part located between the two front supporting parts.

[0010] Preferably, a ridge protruding upward is provided in the middle of the front connecting portion.

[0011] Preferably, the diameter of the front support portion gradually increases from top to bottom.

[0012] Preferably, the height of the side connecting portion gradually decreases from the two ends to the middle.

[0013] Preferably, the rear support portion is rotatably connected to the connecting and fixing bar.

[0014] Preferably, the connecting and fixing strip includes a rotating connecting portion located on the rear side, a fixed connecting portion located on the front side, and an intermediate connecting portion, the rotating connecting portion is connected to the rear support portion of the negative pressure regulating member, and the fixed connecting portion is connected to the front support portion of the negative pressure regulating member.

[0015] Preferably, the height of the intermediate connecting portion gradually decreases from the two ends to the middle.

[0016] Preferably, the rotating connection part includes two connecting plates, and a slot is formed between the two connecting plates into which the rear support part of the negative pressure regulating member can be inserted. A sliding groove is opened on the inner side wall of the connecting plate, and the rear support part is slidably connected to the sliding groove through a pin.

[0017] Preferably, the slide groove includes a high point and a low point, and the height of the support position of the slide groove for the pin gradually decreases from the high point to the low point, and a limiting boss is provided at the notch position of the slide groove.

[0018] A second aspect of the present invention provides a range hood that adopts the above-mentioned connection structure of the smoke guide plate.

[0019] The range hood includes a smoke collection chamber, a main board, and a smoke guide plate. The smoke collection chamber has an inlet at the bottom and an outlet at the top. The main board is mounted at the inlet of the smoke collection chamber. The smoke guide plate and the main board are connected via the aforementioned connection structure, forming a negative pressure adsorption port between the smoke guide plate and the main board for smoke to flow into the smoke collection chamber. This connection structure adjusts the negative pressure distribution at the negative pressure adsorption port, increasing the local negative pressure and achieving a better oil fume adsorption effect.

[0020] By implementing the above technical solution, the present invention has the following beneficial effects:

[0021] This invention optimizes negative pressure distribution and improves smoke extraction efficiency through the design of the connection structure between the mainboard and the smoke deflector, making it particularly suitable for ultra-thin range hoods. Specifically, by improving the structure of the negative pressure adjustment member, adding a front connecting portion, and providing a ridge on the front connecting portion, this not only enhances structural strength but, more importantly, regulates airflow, optimizes negative pressure distribution, prevents smoke from escaping, and improves smoke absorption.

[0022] Furthermore, by improving and optimizing the front support part and the side connection part structure of the negative pressure regulating part, and coordinating with the structure of the front connection part, a better negative pressure distribution is achieved, further improving the adsorption effect of oil smoke.

[0023] Furthermore, by improving the connection method between the connecting fixing strip and the negative pressure regulating member, the negative pressure plate does not interfere with the rear end plate of the main plate when rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0025] Figure 1 This is a schematic structural diagram of a range hood according to embodiment 1 of the present invention;

[0026] Figure 2 This is a structural diagram of the connection structure of the range hood in Example 1 of the present invention;

[0027] Figure 3 This is a structural diagram of the negative pressure regulating member of the connection structure in Example 1 of the present invention;

[0028] Figure 4 This is a structural diagram of the connecting fixing member of the connecting structure in Example 1 of the present invention;

[0029] Figure 5 for Figure 4 Enlarged schematic diagram of part A.

[0030] 100-smoke collection chamber, 200-oil filter, 300-main board, 301-top board, 302-front end board, 303-rear end board, 304-control assembly, 305-oil collection tank, 400-smoke guide plate, 401-negative pressure adsorption port, 500-connection assembly, 501-connection fixing strip, 5011-rotation connection part, 5011a-slot, 5011b-slide, 5011c-limiting boss, 5012-fixed connection part, 5013-middle connection part, 502-negative pressure adjustment part, 5021-rear support part, 5022-front support part, 5023-side connection part, 5024-front connection part, ridge-5024a. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0032] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to the configuration or usage scenarios of the range hood as shown in the accompanying drawings, and may vary depending on the location or usage of the range hood. Therefore, these or other directional terms should not be construed as restrictive.

[0033] Example 1

[0034] This embodiment provides a range hood, see Figure 1 A range hood typically includes a smoke collection chamber 100 located at the top, with a smoke inlet at the bottom and a smoke outlet at the top. A fan assembly is located within the smoke collection chamber 100 to generate negative pressure, a structure similar to that used in the prior art. An oil filter 200 is installed at the outlet of the smoke collection chamber 100 to filter out oil from the smoke entering the chamber.

[0035] The range hood of this embodiment further includes a mainboard 300, which is mounted at the entrance of the smoke collection chamber 100. The mainboard 300 comprises a top panel 301, a front panel 302, and a rear panel 303. An opening is provided in the middle of the top panel 301, corresponding to the entrance of the smoke collection chamber 100. The front panel 302 houses a control assembly 304, and an oil collection trough 305 is fixedly mounted at the lower end of the rear panel 303.

[0036] The range hood of this embodiment also includes a smoke deflector plate 400, which is located below the top plate 301 of the main plate 300 and is a flat, thin plate structure. The smoke deflector plate 400 and the main plate 300 are connected via a connecting structure 500, thereby providing a negative pressure suction port 401 between the smoke deflector plate 400 and the main plate 300 for smoke to flow into the smoke collection chamber 100. The negative pressure suction port 401 primarily includes a front negative pressure suction port, a left negative pressure suction port, and a right negative pressure suction port (front, left, and right are defined here with the front plate as the front). The rear end of the smoke deflector plate 400 overlaps the edge of the oil collection tank 305, and the end extends directly above the oil collection tank 305 to guide oil stains on the smoke deflector plate 400 into the oil collection tank 305 for collection. Lips are provided on the front, left, and right edges of the smoke deflector plate 400 to prevent oil stains from dripping from these three sides.

[0037] In this embodiment, the structure of the connection structure 500 is specially designed, see Figure 2The connecting structure 500 consists of two parts: a connecting bar 501 and a negative pressure regulating member 502. The connecting bar 501 is fixedly connected to the lower surface of the top plate 301 of the main plate 300. Two connecting bars 501 are provided, one on each side, located near the left and right sides of the top plate 301. The connecting bar 501 and the negative pressure regulating member 502 can be made of the same or different materials as the smoke deflector 400 or the main plate 300. Both the connecting bar 501 and the negative pressure regulating member 502 have smooth surfaces to prevent erratic changes in direction when the smoke collides with these structures, which could reduce the adsorption effect. Some pits or protrusions can be set on the lower surface of the smoke guide plate 400. The temperature of the oil smoke itself is relatively high. When it reaches the smoke guide plate 400 under the action of negative pressure, the speed is very fast. At this time, the impact force of the oil smoke is huge at the moment it contacts the smoke guide plate 400. Therefore, the oil smoke is extremely easy to be dispersed. Providing pits or protrusions can slow down the impact speed between the oil smoke and the smoke guide plate 400, thereby reducing the degree to which the oil smoke is dispersed.

[0038] The upper end of the negative pressure regulating member 502 is connected to the connecting and fixing strip 501 , and the lower end is fixedly connected to the smoke guide plate 400 .

[0039] See also Figure 3 The negative pressure regulating member 502 includes two rear support portions 5021 located at the rear side, two front support portions 5022 located at the front side, a side connecting portion 5023 located between the rear support portions 5021 and the front support portions 5022, and a front connecting portion 5024 located between the two front support portions 5022. The heights of the front supporting portions 5022 and the rear supporting portions 5021 are greater than the heights of the side connecting portions 5023 and the front connecting portion 5024, so as to form a certain distance between the top plate 301 of the main board and the smoke guide plate 400, thereby forming a negative pressure zone. On the one hand, the negative pressure regulating member 502 serves to connect the fixing strip 501 and the smoke guide plate 400, and cooperates with the fixing strip 501 to control the distance between the top plate 301 and the smoke guide plate 400. On the other hand, it adjusts the distribution of negative pressure at the negative pressure suction port 401.

[0040] The side connection portion 5023 and the rear support portion 5021 are in contact with each other, and the front connection portion 5024 and the front support portion 5022 are in contact with each other. They may be connected or not connected, and may be separate or integrated.

[0041] The structure of the above-mentioned negative pressure regulating member 502 and the connecting fixing strip 501 forms a front negative pressure adsorption port, a left negative pressure adsorption port and a right negative pressure adsorption port between the top plate 301 and the smoke guide plate 400, and separates each adsorption port by the rear support part 5021 and the front support part 5022, which is conducive to the concentration of negative pressure at each adsorption port position.

[0042] In one embodiment, the center of the front connecting portion 5024 is provided with an upwardly protruding ridge 5024a, which gradually increases in height from both ends to the center. The provision of this ridge 5024a further optimizes the negative pressure at the front negative pressure adsorption port, increasing the negative pressure locally while simultaneously reducing it elsewhere. This optimizes the negative pressure adsorption of oil fumes, reduces their diffusion, and enhances the concentrated adsorption effect.

[0043] In one embodiment, the front support portion 5022 is generally cylindrical, with its top end being inserted into a socket on the connection and fixing bar 501 for connection, and its bottom end being fixedly connected or integrally connected to the smoke deflector 400. The diameter of the front support portion 5022 gradually increases from top to bottom, which helps further optimize the negative pressure of the negative pressure adsorption port.

[0044] In one embodiment, see Figure 4 The connecting and fixing bar 501 includes a rotating connection portion 5011 located at the rear side, a fixed connection portion 5012 located at the front side, and an intermediate connection portion 5013. The rotating connection portion 5011 is connected to the rear support portion 5021 of the negative pressure regulating member 502, and the fixed connection portion 5012 is connected to the front support portion 5022 of the negative pressure regulating member 502. The rotating connection portion 5011 includes two connecting pieces, with a slot 5011a formed between the two connecting pieces to be inserted into the rear support portion 5021 of the negative pressure regulating member 502. A sliding groove 5011b is formed on the inner side wall of the connecting piece, and a through hole is formed in the rear support portion 5021. A pin passes through the through hole to achieve sliding connection with the sliding groove 5011b.

[0045] In one embodiment, the height of the intermediate connecting portion 5013 gradually decreases from the two ends to the middle, presenting a structure that is low in the middle and high at both ends. This is conducive to cooperating with the negative pressure regulating member 502 to achieve a better negative pressure distribution effect, making the negative pressure in the core area more concentrated.

[0046] See also Figure 5 , Figure 4In the enlarged view of the portion corresponding to area A in FIG, the slide groove 5011b includes a high point and a low point. The height of the support position of the slide groove 5011b for the latch gradually decreases from the high point to the low point. A limiting boss 5011c is provided at the notch of the slide groove 5011b. Because the rear end of the smoke guide plate 400 supports the oil collecting trough 305, interference with the rear end plate 303 may occur when rotating the smoke guide plate 400 to adjust its angle or remove it. This arrangement in this embodiment prevents interference between the smoke guide plate 400 and the rear end plate 303 during rotation. To operate, first apply slight downward pressure on the front end of the smoke guide plate 400 to disengage the front support portion 5022 from the fixed bar 501. At this point, the weight of the smoke guide plate 400 drives the axle pin forward and downward along the slide groove, allowing the smoke guide plate 400 to rotate freely without interference with the rear end plate 303 and the oil collecting trough 305.

[0047] The height of the side connection portion 5023 of the negative pressure regulating member 502 gradually decreases from the ends to the middle. The height of the ends is greater than the height of the middle portion. This arrangement allows for targeted distribution of the negative pressure at the side negative pressure adsorption ports 401, increasing the local (central) negative pressure and improving the side's flue gas adsorption efficiency.

[0048] In this embodiment, the negative pressure regulating member 502 and the connecting and fixing strip 501 are hollow structures, which can save materials, reduce weight, and make the smoke intake system more lightweight.

[0049] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above implementation cases, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above implementation cases, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A smoke guide plate connection structure, used to connect a main board (300) of a range hood and a smoke guide plate (400), characterized in that: The connection structure (500) comprises: A connecting fixing strip (501) is connected to the mainboard (300) of the range hood; The negative pressure regulating member (502) is used to regulate the distribution of the adsorption negative pressure, wherein the lower end of the negative pressure regulating member (502) is connected to the smoke guide plate (400), and the top end of the negative pressure regulating member (502) is connected to the connecting fixing strip (501).

2. The connection structure of the smoke guide plate according to claim 1, characterized in that: The negative pressure regulating member (502) comprises two rear supporting portions (5021) located at the rear side, two front supporting portions (5022) located at the front side, a side connecting portion (5023) located between the rear supporting portions (5021) and the front supporting portions (5022), and a front connecting portion (5024) located between the two front supporting portions (5022).

3. The connection structure of the smoke guide plate according to claim 2, characterized in that: The front connecting portion (5024) is provided with an upwardly protruding ridge (5024a).

4. A connection structure of smoke guide plates according to claim 2 or 3, characterized in that: The diameter of the front support portion (5022) gradually increases from top to bottom.

5. The connection structure of the smoke guide plate according to claim 2 or 3, characterized in that: The height of the side connection portion (5023) gradually decreases from the two end portions to the middle portion.

6. The connection structure of the smoke guide plate according to claim 2, characterized in that: The rear support portion (5021) is rotationally connected to the connecting and fixing bar (501).

7. The connection structure of the smoke guide plate according to claim 2, characterized in that: The connecting and fixing strip (501) comprises a rotating connecting portion (5011) located at the rear side, a fixed connecting portion (5012) located at the front side, and an intermediate connecting portion (5013); the rotating connecting portion (5011) is connected to the rear supporting portion (5021) of the negative pressure regulating member (502); and the fixed connecting portion (5012) is connected to the front supporting portion (5022) of the negative pressure regulating member (502).

8. The connection structure of the smoke guide plate according to claim 7, characterized in that: The height of the intermediate connecting portion (5013) gradually decreases from the two end portions to the middle portion.

9. The connection structure of the smoke guide plate according to claim 7, characterized in that: The rotating connection portion (5011) comprises two connecting plates, a slot (5011a) is formed between the two connecting plates into which the rear support portion (5021) of the negative pressure regulating member (502) can be inserted, a sliding groove (5011b) is formed on the inner side wall of the connecting plate, and the rear support portion (5021) is slidably connected to the sliding groove (5011b) via a latch.

10. The connection structure of the smoke guide plate according to claim 9, characterized in that: The slide groove (5011b) includes a high point and a low point. Along the high point to the low point, the height of the support position of the slide groove (5011b) for the latch gradually decreases, and a limiting boss (5011c) is provided at the notch position of the slide groove.

11. A range hood, comprising a connection structure for a smoke guide plate according to any one of claims 1 to 10.

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