CN210662985U9

CN210662985U9 - Fume exhauster

Info

Publication number: CN210662985U9
Application number: CN201921081401.9U
Authority: CN
Inventors: 陈浩辉; 徐鑫; 申志贤
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-01-14
Filing date: 2019-07-11
Publication date: 2023-10-31
Anticipated expiration: 2029-07-11
Also published as: CN211625391U; CN212378031U; CN111435004A; CN211822584U; CN111006291A; CN210399059U; CN210861257U; CN211372529U; CN210861270U; CN111023221A; CN211822557U; CN210662985U; CN212378029U; CN210861258U; CN210662986U; CN211372530U; CN211625390U; CN211119553U; CN211119554U; CN210861274U

Abstract

The utility model relates to a range hood, which comprises a shell and a fan system arranged in the shell, and is characterized in that: the lower part of the shell is provided with a vertically extending smoke inlet cavity, the front side wall of the lower part of the shell is provided with a smoke inlet communicated with the smoke inlet cavity, the front side of the shell is provided with a smoke baffle plate which is arranged close to the upper edge of the smoke inlet, the upper edge of the smoke inlet is provided with a flow guiding structure capable of reducing the flow velocity of inlet oil smoke, and the flow guiding structure is at least provided with a first guide plate which is gradually inclined backwards from top to bottom. The flow guide structure arranged at the upper edge of the smoke inlet can form an airflow buffer area together with the smoke baffle plate to reduce the speed of the quickly rising smoke, so that the smoke is sucked away and quickly discharged after the smoke enters the smoke inlet cavity through the smoke inlet and temporarily flows around, thereby improving the smoke absorbing effect and reducing the pneumatic noise at the smoke inlet.

Description

Fume exhauster

Technical Field

The utility model relates to the technical field of household appliances for kitchens, in particular to a range hood.

Background

The range hood is an electric appliance which is indispensable in the kitchen at present, and an upper exhaust type oil smoke purifying system is common and widely used.

At present, the upward-exhaust type fume purification systems are mainly divided into two types: top suction type range hood and near suction type range hood. The top-suction type range hood is attractive, but has a high smoke inlet and limited smoke suction effect; compared with the top-suction type range hood, the near-suction type range hood has lower smoke inlet, but is influenced by the appearance structure and the internal air duct structure of the near-suction type range hood, and the current near-suction type range hood cannot better approach the smoke, so that the smoke suction effect is limited to a great extent.

For the vertically arranged smoke inlet duct, as shown in fig. 4, if the smoke inlet 111' is located at the front side of the smoke inlet duct 11' and is vertically arranged with the smoke inlet duct 11', when rising smoke enters the smoke inlet duct from the smoke inlet, vortex is formed at the inner wall of the inlet of the smoke inlet duct when fluid turns rapidly, so that gas flows back, and energy loss and pneumatic noise are generated.

Disclosure of Invention

Aiming at the current state of the art, the utility model provides the range hood which can buffer the inlet oil smoke so as to avoid vortex formation, further improve the oil smoke absorbing effect and reduce noise.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a range hood, includes casing and locates the fan system in this casing, its characterized in that: the lower part of the shell is provided with a vertically extending smoke inlet cavity, the front side wall of the lower part of the shell is provided with a smoke inlet communicated with the smoke inlet cavity, the front side of the shell is provided with a smoke baffle plate which is arranged close to the upper edge of the smoke inlet, the upper edge of the smoke inlet is provided with a flow guiding structure capable of reducing the flow velocity of inlet oil smoke, and the flow guiding structure is at least provided with a first guide plate which is gradually inclined backwards from top to bottom.

Preferably, the lower edge of the first guide plate is connected with a second guide plate which gradually inclines upwards from front to back. The second guide plate can further play a role in guiding the oil smoke.

Preferably, the included angle between the second guide plate and the front side wall of the smoke inlet cavity is alpha, and alpha is more than or equal to 15 degrees and less than or equal to 70 degrees. The distance between the joint of the first guide plate and the second guide plate and the rear wall in the smoke inlet cavity is s, and the vertical height of the second guide plate is h, and h multiplied by sin alpha is more than or equal to 2 and less than or equal to s/2. By adopting the design, the fume sucking effect is improved, and the noise is reduced.

Preferably, in the state that the smoke baffle plate is horizontally arranged, the height from the joint of the first guide plate and the second guide plate to the lower wall surface of the smoke baffle plate is H, and H is more than or equal to 10mm and less than or equal to 60mm. By adopting the structure, the smoke baffle plate enables the oil smoke to enter the smoke inlet after gathering and be further smoothly discharged after being slowed down by the flow guide structure, thereby being beneficial to avoiding vortex formation, improving the oil smoke absorbing effect and reducing noise.

In each of the above schemes, the inner front wall of the smoke inlet cavity is provided with a smoke guiding structure protruding backwards, the smoke guiding structure is provided with a plane arranged vertically and an inclined plane extending gradually and obliquely outwards from the edge of the plane, and the smoke guiding structure is positioned above the flow guiding structure. The structure is favorable for reducing the resistance to the oil smoke fluid and improving the oil smoke absorbing effect.

Compared with the prior art, the utility model has the advantages that: the flow guide structure arranged at the upper edge of the smoke inlet can form an airflow buffer area together with the smoke baffle plate to reduce the speed of the quickly rising smoke, so that the smoke is sucked away and quickly discharged after the smoke enters the smoke inlet cavity through the smoke inlet and temporarily flows around, thereby improving the smoke absorbing effect and reducing the pneumatic noise at the smoke inlet.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic view of a smoke inlet and flow guiding structure according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of the flow state of the smoke in the embodiment of the utility model;

fig. 4 is a schematic diagram of a flow state of oil smoke in the background art of the utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 3, the range hood of this embodiment includes a housing 1 and a fan system 2 disposed in the housing 1, a vertically extending smoke inlet 11 is disposed at the lower portion of the housing 1, a smoke inlet 111 communicating with the smoke inlet 11 is formed on a front side wall of the lower portion of the housing 1, a smoke baffle 3 disposed near an upper edge of the smoke inlet 111 is disposed at the front side of the housing 1, and the smoke baffle 3 may be horizontally fixed or may be reversible.

In this embodiment, the upper edge of the smoke inlet 111 is provided with a flow guiding structure 4 capable of reducing the flow velocity of the inlet smoke, the flow guiding structure 4 comprises a first guiding plate 41 and a second guiding plate 42, the upper edge of the first guiding plate 41 is connected with the upper edge of the smoke inlet 111, the first guiding plate 41 is gradually inclined backwards from top to bottom, and the second guiding plate 42 is connected with the lower edge of the first guiding plate 41 and gradually inclined upwards from front to back.

Specifically, the included angle between the second guide plate 42 and the front side wall of the smoke inlet cavity 11 is alpha, and alpha is more than or equal to 15 degrees and less than or equal to 70 degrees. The distance between the joint of the first guide plate 41 and the second guide plate 42 and the inner rear wall of the smoke inlet cavity 11 is s, and the vertical height of the second guide plate 42 is h, and h multiplied by sin alpha is more than or equal to 2 and less than or equal to s/2. In the state that the smoke baffle plate 3 is horizontally arranged, the height from the joint of the first guide plate 41 and the second guide plate 42 to the lower wall surface of the smoke baffle plate 3 is H, and H is more than or equal to 10mm and less than or equal to 60mm. By adopting the structure, the smoke baffle plate 3 enables the oil smoke to enter the smoke inlet after gathering, and is further smoothly discharged after being slowed down by the flow guide structure 4, thereby being beneficial to avoiding vortex formation, improving the oil smoke absorbing effect and reducing noise.

The inner front wall of the smoke inlet cavity 11 is provided with a smoke guiding structure 5 protruding backwards, the smoke guiding structure 5 is provided with a plane 51 which is vertically arranged and an inclined plane 52 which gradually and obliquely extends outwards from the edge of the plane 51, and the smoke guiding structure 5 is positioned above the flow guiding structure 4. The structure is favorable for reducing the resistance to the oil smoke fluid and improving the oil smoke absorbing effect.

The air flow buffer area can be formed by the flow guide structure 4 arranged at the upper edge of the smoke inlet 111 and the smoke baffle 3 together for reducing the speed of the rapidly rising smoke, so that the smoke is sucked away and rapidly discharged after being temporarily bypassed after entering the smoke inlet cavity 11 through the smoke inlet 111, thereby improving the smoke absorbing effect and reducing the pneumatic noise at the smoke inlet 111.

Claims

1. The utility model provides a range hood, includes casing (1) and locates fan system (2) in this casing (1), its characterized in that: the utility model discloses a smoke exhaust ventilator, including casing (1), upper edge, lower part, casing (1) has vertically extending advances cigarette chamber (11), open on the preceding lateral wall of casing (1) lower part have advance cigarette mouth (111) that are linked together with this advance cigarette chamber (11), casing (1) front side is provided with and is close to and advances cigarette board (3) that the upper edge of cigarette mouth (111) arranged, the upper edge that advances cigarette mouth (111) is provided with guide structure (4) that can reduce entry oil smoke velocity of flow, and this guide structure (4) have at least top-down first deflector (41) that incline backward gradually.

2. The range hood of claim 1, wherein: the lower edge of the first guide plate (41) is connected with a second guide plate (42) which gradually inclines upwards from front to back.

3. The range hood of claim 2, wherein: the included angle between the second guide plate (42) and the front side wall of the smoke inlet cavity (11) is alpha, and alpha is more than or equal to 15 degrees and less than or equal to 70 degrees.

4. A range hood according to claim 3, wherein: the distance between the joint of the first guide plate (41) and the second guide plate (42) and the inner rear wall of the smoke inlet cavity (11) is s, and the vertical height of the second guide plate (42) is h, and h multiplied by sin alpha is more than or equal to 2 and less than or equal to s/2.

5. The range hood according to any one of claims 1 to 4, wherein: in the state that the smoke baffle plate (3) is horizontally arranged, the height from the joint of the first guide plate (41) and the second guide plate (42) to the lower wall surface of the smoke baffle plate (3) is H, and H is more than or equal to 10 and less than or equal to 60mm.