CN210107519U

CN210107519U - Side-draft range hood

Info

Publication number: CN210107519U
Application number: CN201920609588.9U
Authority: CN
Inventors: 胡承杰; 朱学江; 张鲁涛
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-02-21
Anticipated expiration: 2029-04-29

Abstract

The utility model discloses a formula range hood is inhaled to side, including casing, setting at the panel of casing front side and the fan of setting in the casing, first air intake has been seted up on the panel, the fan has second air intake, its characterized in that: the center of the second air inlet of the fan is offset downwards relative to the center line X of the first air inlet to form the actual air inlet of the fan, the upper edge of the first air inlet corresponds to the length d0 between the second air inlets, the lower edge of the first air inlet corresponds to the length d1 between the second air inlets, and d1> d 0. The center of the air inlet of the fan is offset downwards relative to the center line of the air inlet of the panel, so that air inlet vortexes can be cut off by utilizing the lower edge of the air inlet of the panel, and wind noise of the vortexes is effectively reduced.

Description

Side-draft range hood

Technical Field

The utility model belongs to the technical field of the oil smoke purifies and specifically relates to a formula range hood is inhaled to side.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The side-draft range hood absorbs most of oil smoke close to a cooking bench in an arc form by using a vortex air pressure principle, so that adverse effects on human health can be reduced, and the suction effect of a power source is basically not reduced because the power source is close to the cooking bench.

A side-suction range hood commonly used, such as the side-suction range hood disclosed in Chinese patent with application number 201710263663.6, which is capable of preventing smoke leakage and convenient and fast to maintain, comprises a shell and a front panel, wherein an air suction inlet is arranged on the front panel, a liftable upper smoke baffle and a liftable lower smoke baffle are arranged on the front surface of the front panel, and two independent driving mechanisms for respectively driving the upper smoke baffle and the lower smoke baffle are arranged in the shell. The square inlet mode is usually easy to generate squeal sound due to the wind speed of the inlet wind.

In order to solve the above problems, one way is to change the inlet into a circular shape, for example, as disclosed in chinese patent application No. 201610790408.2, a noise reduction device of a side-draft range hood comprises a fume collecting hood provided with an air inlet, a choke ring provided at the inlet of the air inlet and connected with the fume collecting hood by screws, and a noise reduction wind deflector assembly, wherein the change causes the appearance of the range hood to be changed, and the change is often not desirable; in addition, the width of the smoke baffle plate is increased, so that the power of the moving mechanism is increased, and the cost is increased; or the gap between the smoke baffle and the oil guide plate inside is increased, so that the material consumption of the whole machine is increased, the cost is increased, and the front-back distance of the whole machine is also increased, so that the range hood shields the sight of a user.

In addition, the fan system is improved and fixed on the fan frame, so that the distance between the smoke baffle and the fan inlet is increased, and the structure can increase parts and cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the problem that above-mentioned prior art exists, a formula range hood is inhaled to side is provided, can effectively reduce the vortex wind and make an uproar.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a side-draught range hood, includes the casing, sets up the panel in the casing front side and sets up the fan in the casing, first air intake has been seted up on the panel, the fan has second air intake, its characterized in that: the center of the second air inlet of the fan is offset downwards relative to the center line X of the first air inlet to form the actual air inlet of the fan, the upper edge of the first air inlet corresponds to the length d0 between the second air inlets, the lower edge of the first air inlet corresponds to the length d1 between the second air inlets, and d1> d 0.

To maintain the appearance harmony, the value range of d1 is: d1>20 mm; or the diameter ratio of d1 to the impeller of the fan is 0.7-0.9.

In order to facilitate guiding of grease in the shell to enter the oil cup at the bottom of the shell, an oil guide plate is arranged between the fan and the panel and comprises a plate body, an inlet is formed in the middle of the plate body, and the inlet corresponds to a second air inlet of the fan in a matching mode.

In order to guide the airflow to the direction without influencing the airflow at the inlet so as to reduce the noise, the position of the plate body close to the periphery protrudes towards the middle and the direction far away from the fan to form an annular radial surface, the radial inner periphery of the radial surface axially protrudes towards the fan direction to form a first flanging, and the radial inner peripheries of the inner surface and the radial surface of the first flanging form the inlet.

In order to facilitate the carding of air flow, the air inlet is uniform, the generation of squeaking is avoided, a mesh enclosure is further arranged between the panel and the oil guide plate, and the mesh enclosure corresponds to the first air inlet of the panel and the inlet of the oil guide plate.

In order to control the air flow not to excessively flow to the shell in the flowing process and avoid the air flow in the shell from being disordered and forming vortex air flow, thereby controlling noise and squealing noise, the periphery of the plate body of the oil guide plate is provided with a second flanging protruding towards the panel.

In order to simplify the structure, the fan further comprises a volute, the second air inlet is formed in the volute, the oil guide plate is fixedly connected with the volute and the panel of the fan respectively, the top of the volute of the fan is connected with the top of the shell, and the rear portion of the volute of the fan is fixedly connected with the rear portion of the shell through a support.

Compared with the prior art, the utility model has the advantages of: the center of the air inlet of the fan is offset downwards relative to the center line of the air inlet of the panel, so that air inlet vortexes can be cut off by using the lower edge of the air inlet of the panel, and the wind noise of the vortexes is effectively reduced; the middle flanging on the oil guide plate can guide the airflow to the direction without influencing the airflow at the inlet, thereby further reducing the noise; the flanging on the periphery of the oil guide plate can control the airflow not to excessively flow to the shell in the flowing process, and avoid the disordered airflow and the formation of vortex airflow in the shell, thereby controlling noise and howling; through set up the screen panel in panel rear side, can comb the air current that gets into by the air intake of panel for it is even to admit air.

Drawings

Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention;

fig. 2 is a schematic front view of the range hood of the embodiment of the present invention showing hidden smoke baffle, mesh enclosure and oil guide plate;

fig. 3 is a sectional view of the range hood according to the embodiment of the present invention;

fig. 4 is a schematic view of an oil guide plate of the range hood according to the embodiment of the present invention;

fig. 5 is a cross-sectional view of an oil guide plate of the range hood according to the embodiment of the present invention;

fig. 6 is a schematic view of an actual air inlet of a fan of the range hood according to the embodiment of the present invention;

fig. 7 is a schematic view of an actual air inlet of a fan of a range hood in the prior art.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Referring to fig. 1 to 3, a side-draft range hood includes a housing 1, a panel 2 disposed at the front side of the housing 1, and a fan 3 disposed in the housing 1. The panel 2 is provided with a first air inlet 21, the first air inlet 21 is provided with a smoke baffle 4, the upper end of the smoke baffle 4 is hinged with the panel 2 and can rotate relatively, and the lower end of the smoke baffle 4 is a free end, so that the first air inlet 21 can be opened or closed.

The first air inlet 21 is in a strip shape, if the center line X of the first air inlet 21 in the horizontal direction and the center of the second air inlet 31 of the fan 3 are disposed on the same horizontal plane, the actual air inlet of the fan 3 formed by the intersection of the first air inlet 21 and the second air inlet 31 will generate a vortex at the lower right corner, as shown in fig. 7. Therefore, in the present embodiment, the center of the second air inlet 31 of the fan 3 is shifted downward relative to the center line X of the first air inlet 21, and the actual air inlet of the fan 3 is formed as shown in fig. 6.

The length between the upper edges of the first air inlets 21 and the second air inlets 31 of the fan 3 is d0, the length between the lower edges of the first air inlets 21 and the second air inlets 31 of the fan 3 is d1, and d1> d0, so that the air volume can be ensured because the upper half circle air volume is larger and the lower half circle air volume is smaller at the inlet of the second air inlets 31 of the fan 3. Furthermore, d1>20mm or 0.7-0.9 of the diameter of the impeller (not shown) of the fan 3. The first intake vent 21, if too large, may result in an increased appearance of the panel 2. In order to keep the appearance harmonious, the rotation moment of the smoke barrier 4 can not be large (the cost of the electric motion mechanism is low, and the cost of the panel is also low), so that the reasonable design of the intersection form and the position are important. Through setting up like this, can utilize the lower limb of first air intake 21 to amputate the swirl of admitting air, effectively reduce the wind of swirl and make an uproar.

An oil guide plate 5 is arranged between the fan 3 and the panel 2. Referring to fig. 4 and 5, the oil guide plate 5 includes a plate body 51, and an inlet 52 is formed in the middle of the plate body 51 and correspondingly adapted to the second air inlet 31 of the fan 3. The inlet 52 is formed in such a manner that an annular radial surface 521 is formed by projecting from the plate body 51 near the periphery toward the center and in the direction away from the fan 3, a first flange 522 (axial surface) is formed by projecting the radially inner periphery of the radial surface 521 axially toward the fan 3, and the first flange 522 is inclined toward the center in the direction of the fan 3 and is tapered. The radially inner periphery of the inner radial surface 521 of the first flange 522 forms the inlet 52 described above, and the inlet 52 is similar in structure to a conventional air inlet ring of the fan 3. First cuff 522 is used to direct the airflow in a direction that does not affect the inlet airflow, thereby reducing noise.

When the relative position of the fan 3 and the panel 2 is adopted, the wind noise is improved, and simultaneously, the distance between the first flange 522 and the panel 2 (a back plate may be arranged on the back of the panel 2, and at this time, the distance between the first flange 53 and the back plate) is too short, so that the squeaking is generated. Therefore, a mesh cover 6 made of metal is further disposed between the face plate 2 and the oil guide plate 5, and is fixed to the back surface (or the back plate) of the face plate 2. Therefore, the air flow can be combed, the air inlet is uniform, and the squeaking is avoided. The mesh cover 6 corresponds to the first air inlet 21 on the panel 2 and the inlet 52 on the oil guide plate 5, and the mesh area is larger than the actual air inlet area of the fan 3. In addition, a second flanging 53 protruding towards the panel 2 is arranged on the periphery of the plate body 51 of the oil guide plate 5, so that the air flow is controlled not to excessively flow to the shell 1 in the flow, the air flow in the shell 1 is prevented from being disordered and forming vortex air flow, and the noise and the squeaking are controlled.

The oil guide plate 5 is respectively connected and fixed with a volute 32 (a second air inlet 31 is formed on the volute 32) of the fan 3 and the panel 2, the top of the volute 32 of the fan 3 is connected with the top of the housing 1, and the rear part of the volute 32 of the fan 3 is connected and fixed with the rear part of the housing 1 through a bracket 33.

The oil guide plate 5 is integrally square, and the mesh enclosure 6 is integrally square.

Claims

1. The utility model provides a side-draught range hood, includes casing (1), sets up panel (2) and fan (3) of setting in casing (1) front side, first air intake (21) have been seted up on panel (2), fan (3) have second air intake (31), its characterized in that: the center of the second air inlet (31) of the fan (3) is offset downwards relative to the central line X of the first air inlet (21) to form the actual air inlet of the fan (3), the upper edge of the first air inlet (21) corresponds to the length d0 between the second air inlets (31), the lower edge of the first air inlet (21) corresponds to the length d1 between the second air inlets (31), and d1> d 0.

2. The side draft range hood according to claim 1, wherein: the value range of d1 is: d1>20 mm; or the diameter ratio of d1 to the impeller of the fan (3) is 0.7-0.9.

3. The side draft range hood according to claim 1 or 2, wherein: be provided with between fan (3) and panel (2) and lead oiled-plate (5), lead oiled-plate (5) including plate body (51), import (52) have been seted up to the centre of plate body (51), import (52) correspond the adaptation with second air intake (31) of fan (3).

4. The side draft range hood according to claim 3, wherein: the plate body (51) is close to the periphery, protrudes towards the middle and towards the direction far away from the fan (3) to form an annular radial surface (521), the radial inner periphery of the radial surface (521) axially protrudes towards the direction of the fan (3) to form a first flanging (522), and the radial inner periphery of the inner and radial surfaces (521) of the first flanging (522) forms the inlet (52).

5. The side draft range hood according to claim 4, wherein: still be provided with screen panel (6) between panel (2) and oil guide plate (5), screen panel (6) correspond with first air intake (21) of panel (2) and import (52) of oil guide plate (5).

6. The side draft range hood according to claim 4, wherein: and a second flanging (53) protruding towards the panel (2) is arranged on the periphery of the plate body (51) of the oil guide plate (5).

7. The side draft range hood according to claim 3, wherein: the fan (3) further comprises a volute (32), the second air inlet (31) is formed in the volute (32), the oil guide plate (5) is fixedly connected with the volute (32) of the fan (3) and the panel (2) respectively, the top of the volute (32) of the fan (3) is connected with the top of the shell (1), and the rear portion of the volute (32) of the fan (3) is fixedly connected with the rear portion of the shell (1) through a support (33).