CN-121993828-A - Air inlet structure and underneath type range hood comprising same

Abstract

The invention provides an air inlet structure and a lower-mounted range hood comprising the same, wherein the air inlet structure is arranged in a box body of the range hood, the air inlet structure comprises a drainage part, the drainage part is arranged in the box body of the range hood and positioned between a fan system of the range hood and an air inlet of the range hood, the box body of the range hood comprises a top plate, the top plate is positioned above the fan system and the air inlet of the range hood, two opposite sides of the drainage part are respectively in sealing connection with the upper edge of the air inlet of the range hood and the top plate, the middle area of the drainage part is in sealing connection with the upper edge of the fan system of the range hood, and the drainage part is used for sealing a space positioned above the air inlet of the range hood and the fan system of the range hood.

Inventors

• SUN JIAQI
• HU ZEYUAN
• YAN JIACHAO

Assignees

• 宁波方太厨具有限公司

Dates

Publication Date

20260508

Application Date

20260327

Claims (10)

1. 1. The utility model provides an inlet structure, its characterized in that, inlet structure sets up in the box of lampblack absorber, inlet structure is including: The kitchen ventilator comprises a kitchen ventilator, a drainage part, a fan system of the kitchen ventilator and an air inlet of the kitchen ventilator, wherein the drainage part is arranged in the kitchen ventilator and is positioned between the fan system of the kitchen ventilator and the air inlet of the kitchen ventilator, the kitchen ventilator comprises a top plate, the top plate is positioned above the fan system of the kitchen ventilator and the air inlet, two opposite sides of the drainage part are respectively and hermetically connected with the upper edge of the air inlet of the kitchen ventilator and the top plate, the middle area of the drainage part is hermetically connected with the upper edge of the fan system of the kitchen ventilator, and the drainage part is used for sealing the space positioned at the air inlet of the kitchen ventilator and above the fan system of the kitchen ventilator.
2. 2. The intake structure of claim 1, wherein the cross-section of the drain includes a first section and a second section, wherein the first section is arcuate and convex toward the fan system of the range hood and the second section is linear.
3. 3. The intake structure of claim 2, wherein the first section is located between an upper edge of an air intake of the range hood and an upper edge of a fan system of the range hood and tangential to an air intake direction of the air intake.
4. 4. The air inlet structure of claim 1, wherein the box of the range hood further comprises a bottom plate, the air inlet structure further comprises a flow dividing part, the flow dividing part extends from the flow guiding part to the bottom plate, two flow dividing parts are arranged on two opposite sides of a main air inlet end of a fan system of the range hood, the air inlet of the range hood is divided by the two flow dividing parts to form a first inlet and a second inlet which are respectively communicated with the main air inlet end and a secondary air inlet end of the fan system of the range hood.
5. 5. The intake structure of claim 4, wherein the flow dividing portion is disposed obliquely from an intake air direction of the range hood toward a main intake end of a fan system of the range hood.
6. 6. The air intake structure according to claim 5, wherein the inclination directions of the two split portions are the same.
7. 7. The intake structure of claim 6, wherein the angle between the two flow dividing portions and the intake direction of the air intake of the range of 10-40 °.
8. 8. The air intake structure of claim 1, further comprising a noise reduction portion disposed on a surface of the flow guide portion facing the fan system of the range hood.
9. 9. The air intake structure of claim 8, wherein the noise reduction portion is provided with a plurality of noise reduction holes.
10. 10. A underneath range hood, characterized in that it comprises an air intake structure according to any one of claims 1-9.

Description

Air inlet structure and underneath type range hood comprising same Technical Field The invention particularly relates to an air inlet structure and a lower-arranged range hood comprising the same. Background The lower-arranged range hood is an important class branch of the range hood at present because the whole range hood has a simple and compact structure and a lower air suction inlet. The lower-arranged range hood consists of a range hood body, a fan system, an air inlet and a smoke baffle plate, wherein the range hood body is generally designed into an inverted right-angle triangle structure with a large lower part along the height direction of the lower-arranged range hood, the smoke collecting effect is enlarged by opening and closing the smoke baffle plate, the fan system is obliquely arranged in a cavity, a certain included angle is formed between a front plate of a volute and a front panel of the box body, a V-shaped air inlet channel with a large upper part and a small lower part seen from the side direction is formed, the air inlet is designed into a rectangular shape with a long left-right part and a narrow upper part and matched with the smoke baffle plate, the space inside the range hood body is large at the air inlet of the fan system, the space of the air inlet area of the fan system, which is close to the range hood body, is small at the side direction, the smoke flowing path is V-shaped when smoke enters the range hood body through the air inlet, and a swirling area is easily generated in the height direction of the lower-arranged range hood body along the space between the fan system and the air inlet and the right upper part of the range hood body under the condition of the smoke flowing. This vortex on the one hand can be the source of noise, and secondly it can extrude normal runner, influences fan system upper portion air inlet, and then influences fan efficiency, simultaneously because this lampblack absorber only has an air intake, for the fan system of front and back two-way air inlet, the inlet end that is close to the air intake is main air inlet region, in the internal flow field, the air current mostly can flow into main air inlet region, and the inlet end that deviates from the air intake is supplementary air inlet region, its needs and main air inlet region rob the flow at the box of the lampblack absorber, cause the separation of supplementary air inlet region air inlet unsmooth and gas in the intracavity, influence the complete machine effect. Disclosure of Invention The invention aims to overcome the defect that in the prior art, the main air inlet area is easy to generate a swirling area due to the inner space of a smoke box body to influence the pneumatic performance of a underneath type smoke exhaust ventilator, and provides an air inlet structure and the underneath type smoke exhaust ventilator comprising the same. The invention solves the technical problems by the following technical scheme: An air inlet structure, the air inlet structure sets up in the box of lampblack absorber, the air inlet structure is including: The kitchen ventilator comprises a kitchen ventilator, a drainage part, a fan system of the kitchen ventilator and an air inlet of the kitchen ventilator, wherein the drainage part is arranged in the kitchen ventilator and is positioned between the fan system of the kitchen ventilator and the air inlet of the kitchen ventilator, the kitchen ventilator comprises a top plate, the top plate is positioned above the fan system of the kitchen ventilator and the air inlet, two opposite sides of the drainage part are respectively and hermetically connected with the upper edge of the air inlet of the kitchen ventilator and the top plate, the middle area of the drainage part is hermetically connected with the upper edge of the fan system of the kitchen ventilator, and the drainage part is used for sealing the space positioned at the air inlet of the kitchen ventilator and above the fan system of the kitchen ventilator. In this scheme, through setting up drainage portion, with the unnecessary space that corresponds fan system and air intake top in the closed box, make the lampblack absorber that has this inlet structure when the entrapment oil smoke, the unnecessary space that corresponds fan system and air intake top in the box of oil smoke entering box back need not, avoid producing the vortex area in the box, thereby reduce the flow separation, the oil smoke can flow into fan system more fast under the water conservancy diversion effect of drainage portion, still usable its self coanda effect when utilizing drainage portion water conservancy diversion oil smoke, lower and the lower problem of upper portion air inlet in the box that the vortex brought of air intake position, promote fan system efficiency, and then promote the pneumatic performance of lampblack absorber. Preferably, the cross section of drainage portion includes first section and second section, wh