CN214007550U

CN214007550U - Fan system and range hood with same

Info

Publication number: CN214007550U
Application number: CN202021991880.0U
Authority: CN
Inventors: 程阳林; 吴灵辉; 何立博
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-08-20
Anticipated expiration: 2030-09-11

Abstract

The utility model discloses a fan system, including two spiral cases arranged side by side and the impeller of setting in the spiral case, the air outlet department of two spiral cases is provided with out the fan housing, its characterized in that: the air outlet cover is internally provided with a spacer for guiding flow, and the spacer extends from the air outlet of the volute to the direction far away from the air outlet of the volute. Also discloses a range hood applying the fan system. Compared with the prior art, the utility model has the advantages of: the air outlet cover can be subjected to diversion treatment, so that the outflow loss is reduced.

Description

Fan system and range hood with same

Technical Field

The utility model relates to an oil smoke purifier, especially a fan system and applied range hood that has this fan system.

Background

The fan is used as an important component of the range hood and has the functions of sucking oil smoke from the air inlet through the impeller rotating at high speed in the volute, filtering the oil smoke by using the impeller and discharging the filtered oil smoke from the air outlet to finish the purification work of the air in a kitchen.

Chinese utility model patent of application number 201420867379.1 discloses a fan and range hood, and the fan includes the spiral case, still includes biax motor and two impellers, and the spiral case is including two wind chambeies that set up side by side, biax motor and spiral case fixed connection, two impellers respectively with two pivot fixed connection of biax motor, the impeller forms the air-out passageway with the wind chamber.

The air outlet cover in the current design method that the single motor drives the double impellers to rotate is mostly not subjected to flow guide treatment, and the flow guide loss is large.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the first technical problem that will solve is not enough to above-mentioned prior art exists, provides one kind and carries out the water conservancy diversion processing to going out the fan housing to reduce the fan system of the loss of effluenting.

The utility model aims to solve the second technical problem that a range hood that uses this fan system is provided.

The utility model provides a first technical scheme that above-mentioned technical problem adopted does: the utility model provides a fan system, includes two volutes of arranging side by side and sets up the impeller in the volute, and the air outlet department of two volutes is provided with out fan housing, its characterized in that: the air outlet cover is internally provided with a spacer for guiding flow, and the spacer extends from the air outlet of the volute to the direction far away from the air outlet of the volute.

In order to enable the directions of the fluid flowing out of the two volutes to be consistent and reduce the impact loss, the inner side of the air outlet cover comprises two independent flow channels close to the volutes and a confluence area which is far away from the volutes and used for converging the two flow channels, each flow channel corresponds to one volute, and the input end of each flow channel is communicated with the fluid of the air outlet of the corresponding volute.

In order to guide the airflow in the flow channel, the spacer is arranged in the flow channel, the volute comprises a volute tongue, and the spacer extends from one side of the air outlet cover corresponding to the volute tongue to one side of the air outlet cover opposite to the volute tongue.

In order to be able to guide the air flow in the flow channel, the spacer is fixedly arranged in the flow channel.

In order to change the flow area, make the flow of air current more even, reduce aerodynamic loss, the spacer rotates and sets up in the runner.

In order to be able to come the turned angle of automatic control spacer according to the air current velocity in the runner, fan system still includes adjustment mechanism, adjustment mechanism includes the motor and by motor control pivoted dwang, the dwang is connected with the spacer, adjustment mechanism still including set up in the runner with the motor electricity be connected be used for measuring the sensor of the interior air current velocity of flow of runner.

In order to guide the air flow with different speed gradients, the partition pieces in each flow passage are at least provided with two partition pieces, the partition pieces are arranged at intervals along the axial direction of the impeller, and the height of the partition piece close to the middle of the air outlet cover is higher than that of the partition piece close to the periphery of the air outlet cover.

In order to divide the lower part of the inner side of the air outlet cover into two independent flow channels, the air outlet cover comprises a confluence clapboard which divides the inner side of the air outlet cover into two independent flow channels.

In order to improve the air inlet efficiency and improve the air quantity of the fan system, the two volutes comprise a main air inlet and an auxiliary air inlet, wherein the main air inlet is far away from the main air inlet, and the auxiliary air inlets are close to the main air inlet.

The utility model provides a second technical scheme that above-mentioned technical problem adopted does: a range hood, its characterized in that: including this fan system.

Compared with the prior art, the utility model has the advantages of: the air outlet cover is internally provided with the spacer, so that the air flow in the air outlet cover can be guided; by arranging the adjusting mechanism, the flow area can be changed by changing the included angle between the spacer and the vertical direction according to the flow velocity of the air flow in the flow channel, so that the air flow flows more uniformly, and the pneumatic loss is reduced; the spacers with different lengths are arranged in the flow channel, so that the air flow with different speed gradients can be guided; through the design of the four air inlets, the air inlet efficiency is improved, and the air quantity of a fan system is improved; by arranging the confluence partition plate, the directions of the fluid flowing out of the two volutes can be consistent, and the impact loss is reduced;

drawings

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

fig. 2 is a cross-sectional view of a fan system according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a fan system according to an embodiment of the present invention.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the disclosed embodiments of the invention may be oriented in different directions and the directional terms are intended to be illustrative and should not be construed as limiting, such as "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 2 to 3, a fan system includes two volutes 1 arranged in parallel, each volute 1 is provided with an impeller 5, and a volute tongue 11 is formed in each volute 1. When applied to a range hood, the volute 1 may be disposed in the fan frame 8.

The fan system also comprises a motor 6 for driving the two impellers 5 to rotate, and the motor 6 is a double-shaft extension motor. The motor 6 includes a motor body 61 and output shafts 62 protruding from opposite ends of the motor body 61. The two impellers 5 are correspondingly sleeved on the output shaft 62 through the wheel disc 7, so that the two impellers 5 can be driven to rotate simultaneously when the motor 6 runs.

Each volute 1 comprises a primary air inlet 12 arranged away from the other volute 1 and a secondary air inlet 13 arranged close to the other volute 1. The design of the four air inlets of the parallel double fans ensures that air can be fed in the middle of the two volutes and at the two sides of the two volutes 1, improves the air inlet efficiency and improves the air volume of the fan system. After the impellers 5 are mounted on two opposite sides of the motor body 61, the two impellers 5 can reach dynamic balance at the output shaft 62, and the stability of the fan system is improved.

Referring to fig. 1 to 3, each volute 1 includes an air outlet 14, and the air outlets 14 of the two volutes 1 are provided with an air outlet housing 2. The inside of the wind outlet housing 2 includes two independent flow channels 21 at the lower part (near the scroll casing 1) and a confluence area 22 at the upper part (far from the scroll casing 1) for the two flow channels 21 to converge. Each flow channel 21 corresponds to one volute 1, and the input end of each flow channel 21 is in fluid communication with the air outlet 14 of the corresponding volute 1. The air outlet cover 2 comprises a confluence clapboard 23 which divides the lower part of the inner side of the air outlet cover 2 into two independent flow channels 21, and the directions of the fluid flowing out of the two volutes 1 are consistent through the confluence clapboard 23, so that the impact loss is reduced. Preferably, the confluence partition 23 may have a V-shape with an opening directed toward the volutes 1, such as a position between two volutes 1, and the opening of the confluence partition 23 may be closed by a baffle or the like. Each side of the converging partition 23 is connected to the periphery at the air outlet 14 of the respective volute 1. In order to reduce the outflow noise, a noise reduction hole communicating with the inside may be opened in the surface of the collecting partition plate 23, and soundproof cotton may be provided inside the collecting partition plate 23.

Each flow channel 21 of the air outlet cover 2 is internally provided with a spacer 3 for guiding flow, the spacer 3 extends from the air outlet 14 of the volute 1 to the direction far away from the air outlet 14 of the volute 1, and the spacer 3 extends from one side of the air outlet cover 2 corresponding to the volute tongue 11 to one side of the air outlet cover 2 opposite to the volute tongue 11. The spacer 3 can be flat or arc to better guide the flow.

In this embodiment, in order to better adapt to the airflow gradient in the axial direction of the impeller 5, two partition plates 3 are disposed in each flow passage 21, and the two partition plates 3 are arranged at intervals along the axial direction of the impeller 5. The height of the spacer 3 close to the middle of the air outlet cover 2 (close to the confluence clapboard 23) is higher than that of the spacer 3 close to the periphery of the air outlet cover 2 (far from the confluence clapboard 23). Wherein, keep away from 3 fixed settings of spacer of the baffle 23 that converges and go out the fan housing 2 in, the spacer 3 that is close to the baffle 23 that converges rotates and sets up in going out the fan housing 2 to can carry out the water conservancy diversion to the air current of different velocity gradients.

More preferably, in order to adapt to air flows under different working conditions, the partition 3 is rotatably connected with the air outlet housing 2, the fan system further comprises an adjusting mechanism 4, the adjusting mechanism 4 comprises a motor 41 and a rotating rod 42 driven by the motor 41 to rotate, the rotating rod 42 is fixedly connected with the partition 3, and similarly, the rotating rod 42 extends from one side of the air outlet housing 2 corresponding to the volute tongue 11 to one side of the air outlet housing 2 opposite to the volute tongue 11. The spacer 3 is fixed with the rotating rod 42, one end of the rotating rod 42 is connected with the output shaft of the motor 41, and the other end is connected with the air outlet cover 2 in a rotating way. The adjusting mechanism 4 further includes a sensor 43 disposed in the flow passage 21 and electrically connected to the motor 41 for measuring the flow rate in the flow passage 21. The adjustment mechanism 4 can automatically adjust the rotation angle of the spacer 3 according to the wind speed of the flow path 21. In this embodiment, the rotating rod 42 extends horizontally and is perpendicular to the axial direction of the impeller 5.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion or/and be transported to the second portion, and may be directly communicated between the first portion and the second portion, or indirectly communicated between the first portion and the second portion via at least one third member, which may be a fluid passage such as a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber allowing the fluid to flow therethrough, or a combination thereof.

Claims

1. The utility model provides a fan system, includes two volutes (1) of arranging side by side and sets up impeller (5) in volute (1), and air outlet (14) department of two volutes (1) is provided with out fan housing (2), its characterized in that: be provided with spacer (3) that are used for the water conservancy diversion in the fan-out cover (2), spacer (3) are located to the direction of keeping away from air outlet (14) of spiral case (1) by air outlet (14) of spiral case (1) and are extended.

2. The fan system of claim 1, wherein: the inner side of the air outlet cover (2) comprises two independent flow channels (21) close to the volute (1) and a confluence area (22) which is far away from the volute (1) and used for converging the two flow channels (21), each flow channel (21) corresponds to one volute (1), and the input end of each flow channel (21) is communicated with the air outlet (14) of the corresponding volute (1) in a fluid mode.

3. The fan system of claim 2, wherein: the spacer (3) is arranged in the flow channel (21), the volute (1) comprises a volute tongue (11), and the spacer (3) extends from one side, corresponding to the volute tongue (11), of the air outlet cover (2) to one side, opposite to the volute tongue (11), of the air outlet cover (2).

4. The fan system of claim 3, wherein: the spacer (3) is fixedly arranged in the flow channel.

5. The fan system of claim 3, wherein: the spacer (3) is rotatably arranged in the flow channel.

6. The fan system of claim 5, wherein: fan system still includes adjustment mechanism (4), adjustment mechanism (4) include motor (41) and by motor (41) drive pivoted dwang (42), dwang (42) are connected with spacer (3), adjustment mechanism (4) are still including setting up in runner (21) with motor (41) be connected be used for measuring sensor (43) of the air current velocity in runner (21) of being connected.

7. The fan system of claim 3, wherein: the spacer (3) in each runner (21) has two at least, and each spacer (3) is arranged along impeller (5) axial interval, is close to the high spacer (3) that is close to air-out cover (2) middle spacer (3) is higher than spacer (3) near air-out cover (2) periphery.

8. The fan system of any of claims 2-7, wherein: the air outlet cover (2) comprises a confluence clapboard (23) which divides the inner side of the air outlet cover (2) into two independent flow channels (21).

9. The fan system of any of claims 1-7, wherein: the two volutes (1) comprise main air inlets (12) which are arranged far away from each other and auxiliary air inlets (13) which are arranged close to each other.

10. A range hood, its characterized in that: comprising a fan system according to any of claims 1-9.