Underneath type air duct negative pressure tank oil discharge and noise reduction structure

Abstract

The application discloses a lower-positioned air duct negative pressure box oil discharging and noise reduction structure, which comprises a negative pressure box shell, a fan assembly, a sealing plate and an anti-back-suction oil outlet cover plate. The negative pressure box shell comprises a negative pressure box U-shaped plate, a side plate and a front cover plate. The anti-back-suction oil outlet cover plate comprises a top plate, an inner partition plate and an outer partition plate. The inner partition plate is provided with an inner oil guiding part, and the outer partition plate is provided with an outer oil guiding gap. The radial projection of the inner oil guiding part does not coincide with the outer oil guiding gap. The anti-back-suction oil outlet cover plate is arranged, so that the oil stains need to pass through the inner oil guiding part, then pass through the gap between the inner partition plate and the outer partition plate, and then flow out from the outer oil guiding gap to really enter the inside of the negative pressure box. The length of the path that the oil stains need to pass through in the case of back suction is prolonged, and the risk of the oil stains being adhered to the fan assembly in the case of back suction is reduced. Meanwhile, the arrangement of the anti-back-suction oil outlet cover plate blocks the air sucked in from directly entering the negative pressure environment to cause the noise generated by turbulence, so that the noise reduction effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of integrated stove technology, and in particular to a bottom-mounted air duct negative pressure box oil drainage and noise reduction structure. Background Technology

[0002] Most integrated cooktops currently on the market use a side-suction, down-draft design, causing grease to accumulate at the bottom of the cooktop. This results in a large amount of grease buildup in the negative pressure box, affecting the cooktop's performance. Even with an oil drain and collection box, grease can still be drawn back into the negative pressure box and into the fan, where it adheres to the impeller. This grease buildup corrodes the impeller, reducing its airflow. Additionally, the increased weight of the impeller leads to higher motor energy consumption. Furthermore, the negative pressure box generates significant noise during operation. Therefore, improvements are needed. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies, such as backflow of oil in the oil collection box, by providing a new bottom-mounted air duct negative pressure box oil drainage and noise reduction structure.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0005] A bottom-mounted negative pressure box oil drainage and noise reduction structure includes a negative pressure box shell, a fan assembly, a sealing plate, and an anti-backflow oil outlet cover. The negative pressure box shell includes a U-shaped negative pressure box plate, side plates, and a front cover plate. The U-shaped negative pressure box plate includes a top cover plate, a bottom plate, and a back plate connected in sequence. There are two side plates, each with a negative pressure box air outlet. The sealing plate is connected to the edge of the air outlet of one of the side plates. The top cover plate... The negative pressure air inlet is provided, and the bottom plate of the negative pressure box is provided with an oil outlet. The anti-backflow oil outlet cover plate includes a top plate, an inner partition, and an outer partition. The inner partition and the outer partition are both provided on the lower surface of the top plate. The vertical projection of the top plate covers the oil outlet. The inner partition is connected to the edge of the oil outlet. The inner partition is provided with an inner oil guiding part, and the outer partition is provided with an outer oil guiding gap. The radial projection of the inner oil guiding part does not coincide with the outer oil guiding gap.

[0006] The anti-backflow oil outlet cover ensures that oil flows through the inner oil guide, then through the gap between the inner and outer partitions, and finally out through the outer oil guide gap into the negative pressure box. This extends the path the oil needs to travel in case of backflow, reducing the risk of oil adhering to the fan components. Simultaneously, the anti-backflow oil outlet cover prevents the intake air from directly entering the negative pressure environment and causing turbulence and noise, thus reducing noise levels.

[0007] As a preferred embodiment, in the aforementioned bottom-mounted air duct negative pressure box oil discharge and noise reduction structure, the lower surface of the oil outlet is provided with an oil outlet protrusion, and the lower part of the inner partition is provided with an inner partition snap-fit ​​part, the lower part of the inner partition passes through the oil outlet and the inner partition snap-fit ​​part snaps with the oil outlet protrusion.

[0008] The fit between the inner partition and the oil outlet protrusion makes the installation of the anti-backflow oil outlet cover easier.

[0009] Preferably, in the aforementioned bottom-mounted air duct negative pressure box oil drainage and noise reduction structure, the bottom plate of the negative pressure box is funnel-shaped, and the oil outlet is located at the lowest point of the bottom plate of the negative pressure box.

[0010] The bottom plate of the negative pressure box is funnel-shaped, and the oil outlet is located at the lowest point of the bottom plate. This design allows the oil to be discharged slowly by gravity.

[0011] As a preferred embodiment, the aforementioned bottom-mounted air duct negative pressure box oil drainage and noise reduction structure has a gripping groove provided on the front side of the front cover plate.

[0012] The gripper groove design makes the installation and removal process easy for users.

[0013] Preferably, in the above-described bottom-mounted air duct negative pressure box oil drainage and noise reduction structure, the gripping groove is embossed, and the inward protruding part of the gripping groove is fitted with a front cover shock-absorbing sleeve, and the fan assembly abuts against the front cover shock-absorbing sleeve.

[0014] The front cover shock-absorbing sleeve is designed to fill the gap between the negative pressure box shell and the fan assembly, which can play a role in shock absorption and noise reduction.

[0015] Preferably, the above-described bottom-mounted air duct negative pressure box oil drainage and noise reduction structure further includes a fan-side fixing assembly. The fan-side fixing assembly includes a first fixing member and a second fixing member. The first fixing member is connected to the side plate, the upper cover plate of the negative pressure box, and the lower bottom plate of the negative pressure box. One end of the second fixing member is connected to the first fixing member, and the other end of the second fixing member abuts against the fan assembly. There are two sets of fan-side fixing assemblies.

[0016] The design of the fan-side fixing component fills the gap between the negative pressure box shell and the fan component, which can play a role in vibration reduction and noise reduction.

[0017] Preferably, in the above-described bottom-mounted air duct negative pressure box oil drainage and noise reduction structure, the bottom plate of the negative pressure box is provided with a support column, and a support flexible pad is provided on the support column, the support flexible pad abutting against the fan assembly.

[0018] The support columns elevate the fan assembly, preventing it from being submerged in the oil residue accumulated on the bottom plate of the negative pressure box, thus reducing the corrosion of the fan assembly by the oil. The flexible support pads also act as shock absorbers, reducing noise during operation. Attached Figure Description

[0019] Figure 1 This is an exploded view of the present invention;

[0020] Figure 2 This is a cross-section of the present invention. Figure 1 ;

[0021] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0022] Figure 4 This is a schematic diagram of the anti-backflow oil outlet cover plate in this invention. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the anti-backflow oil outlet cover plate in this invention. Figure 2 ;

[0024] Figure 6 This is a cross-sectional view of the front cover plate in this invention;

[0025] Figure 7 This is a cross-section of the present invention. Figure 2 . Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-7 The invention will be further described in detail with reference to specific embodiments, but these are not intended to limit the invention:

[0027] Example 1

[0028] A bottom-mounted negative pressure box oil drainage and noise reduction structure includes a negative pressure box shell, a fan assembly 2, a sealing plate 3, and an anti-backflow oil outlet cover 4. The negative pressure box shell includes a negative pressure box U-shaped plate, side plates 11, and a front cover 12. The negative pressure box U-shaped plate includes a negative pressure box upper cover 13, a negative pressure box lower bottom plate 14, and a negative pressure box back plate 15 connected in sequence. There are two side plates 11, each with a negative pressure box air outlet 111. The sealing plate 3 is connected to the edge of the negative pressure box air outlet 111 of one of the side plates 11. The negative pressure box upper cover 13 is provided with a negative pressure air inlet 1. 31. The bottom plate 14 of the negative pressure box is provided with an oil outlet 141. The anti-backflow oil outlet cover plate 4 includes a top plate 41, an inner partition 42, and an outer partition 43. The inner partition 42 and the outer partition 43 are both provided on the lower surface of the top plate 41. The projection of the top plate 41 in the vertical direction covers the oil outlet 141. The inner partition 42 is connected to the edge of the oil outlet 141. The inner partition 42 is provided with an inner oil guiding part 421. The outer partition 43 is provided with an outer oil guiding gap 431. The radial projection of the inner oil guiding part 421 does not coincide with the outer oil guiding gap 431.

[0029] Preferably, the lower surface of the oil outlet 141 is provided with an oil outlet protrusion 144, and the lower part of the inner partition 42 is provided with an inner partition locking part 422. The lower part of the inner partition 42 passes through the oil outlet 141 and the inner partition locking part 422 is locked with the oil outlet protrusion 144.

[0030] Preferably, the bottom plate 14 of the negative pressure box is funnel-shaped, and the oil outlet 141 is located at the lowest point of the bottom plate 14 of the negative pressure box.

[0031] Preferably, the front cover plate 12 is provided with a gripping groove 121 on its front side.

[0032] Preferably, the gripping groove 121 is formed by embossing, and the inward protruding part of the gripping groove 121 is fitted with a front cover shock-absorbing sleeve 122, and the fan assembly 2 abuts against the front cover shock-absorbing sleeve 122.

[0033] Preferably, the fan side fixing assembly is also included. The fan side fixing assembly includes a first fixing member 51 and a second fixing member 52. The first fixing member 51 is connected to the side plate 11, the upper cover plate 13 of the negative pressure box, and the lower bottom plate 14 of the negative pressure box. One end of the second fixing member 52 is connected to the first fixing member 51 and the other end of the second fixing member 52 abuts against the fan assembly 2. There are two sets of fan side fixing assemblies.

[0034] Preferably, the bottom plate 14 of the negative pressure box is provided with a support column 142, and a support flexible pad 143 is provided on the support column 142, and the support flexible pad 143 abuts against the fan assembly 2.

[0035] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be included within the scope of the present invention.

Claims

1. A bottom-mounted air duct negative pressure box oil drainage and noise reduction structure, characterized in that: The system includes a negative pressure box shell, a fan assembly (2), a sealing plate (3), and an anti-backflow oil outlet cover (4). The negative pressure box shell includes a negative pressure box U-shaped plate, side plates (11), and a front cover plate (12). The negative pressure box U-shaped plate includes a negative pressure box upper cover plate (13), a negative pressure box lower bottom plate (14), and a negative pressure box back plate (15) connected in sequence. There are two side plates (11), each with a negative pressure box air outlet (111). The sealing plate (3) is connected to the edge of the negative pressure box air outlet (111) of one of the side plates (11). The negative pressure box upper cover plate (13) has a negative pressure air inlet (131). The negative pressure box lower bottom plate (12) has a negative pressure air outlet (131). 14) An oil outlet (141) is provided. The anti-backflow oil outlet cover (4) includes a top plate (41), an inner partition (42), and an outer partition (43). The inner partition (42) and the outer partition (43) are both provided on the lower surface of the top plate (41). The projection of the top plate (41) in the vertical direction covers the oil outlet (141). The inner partition (42) is connected to the edge of the oil outlet (141). The inner partition (42) is provided with an inner oil guide part (421). The outer partition (43) is provided with an outer oil guide gap (431). The radial projection of the inner oil guide part (421) does not coincide with the outer oil guide gap (431).

2. The bottom-mounted air duct negative pressure box oil drainage and noise reduction structure according to claim 1, characterized in that: The lower surface of the oil outlet (141) is provided with an oil outlet protrusion (144), and the lower part of the inner partition (42) is provided with an inner partition snap-fit ​​part (422). The lower part of the inner partition (42) passes through the oil outlet (141) and the inner partition snap-fit ​​part (422) snaps into the oil outlet protrusion (144).

3. The bottom-mounted air duct negative pressure box oil drainage and noise reduction structure according to claim 1, characterized in that: The bottom plate (14) of the negative pressure box is funnel-shaped, and the oil outlet (141) is located at the lowest point of the bottom plate (14) of the negative pressure box.

4. The bottom-mounted air duct negative pressure box oil drainage and noise reduction structure according to claim 1, characterized in that: The front cover plate (12) has a gripping groove (121) on its front side.

5. The bottom-mounted air duct negative pressure box oil drainage and noise reduction structure according to claim 4, characterized in that: The gripping groove (121) is formed by embossing. The inward protruding part of the gripping groove (121) is fitted with a front cover shock-absorbing sleeve (122). The fan assembly (2) abuts against the front cover shock-absorbing sleeve (122).

6. The bottom-mounted air duct negative pressure box oil drainage and noise reduction structure according to claim 1, characterized in that: It also includes a fan-side fixing assembly, which includes a first fixing member (51) and a second fixing member (52). The first fixing member (51) is connected to the side plate (11), the upper cover plate (13) of the negative pressure box, and the lower bottom plate (14) of the negative pressure box. One end of the second fixing member (52) is connected to the first fixing member (51), and the other end of the second fixing member (52) abuts against the fan assembly (2). There are two sets of fan-side fixing assemblies.

7. The bottom-mounted air duct negative pressure box oil drainage and noise reduction structure according to claim 1, characterized in that: The bottom plate (14) of the negative pressure box is provided with a support column (142), and a support flexible pad (143) is provided on the support column (142), and the support flexible pad (143) abuts against the fan assembly (2).

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