CN210769524U

CN210769524U - Air blowing equipment and swing blade thereof

Info

Publication number: CN210769524U
Application number: CN201921236105.1U
Authority: CN
Inventors: 王庆; 杜文波; 杨鑫; 孙志平; 陈汉飞; 李名毕
Original assignee: Midea Group Co Ltd; GD Midea Environment Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Environment Appliances Manufacturing Co Ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-06-16
Anticipated expiration: 2029-08-01

Abstract

The embodiment of the application provides a blowing device and a swinging blade thereof, wherein the swinging blade comprises a wind shielding body and a fin group; the wind shielding body comprises a first end and a second end which are opposite to each other along the airflow flowing direction; at least one side of body keeps out the wind is provided with fin group, fin group includes the fin that a plurality of intervals set up, and is a plurality of the fin is followed first end extremely the direction interval arrangement of second end, the fin is kept away from the one end orientation of body keeps out the wind the second end slope. According to the swing blade provided by the embodiment of the application, when air flows over the surface of the swing blade, different fins form different 'reflection' turbulent flow effects on at least part of air flow of the air flow boundary layer, the fins disturb the air flow path in the air flow boundary layer, eddy current can be inhibited or weakened to a certain extent, and noise of the blowing equipment is reduced.

Description

Air blowing equipment and swing blade thereof

Technical Field

The application relates to the technical field of air conditioning, in particular to blowing equipment and a swing blade thereof.

Background

Generally, a wind wheel is arranged in the blowing equipment, and airflow formed by the wind wheel is blown out through an air duct and an air outlet on the shell. Because the air speed of the airflow formed by the wind wheel is large, the eddy phenomenon at the turning position of the airflow in the air duct is obvious, and the noise of the air blowing equipment is large.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application is directed to a blowing apparatus with less noise and a swinging vane thereof.

In order to achieve the above object, an aspect of the embodiments of the present application provides a swing blade of a blowing apparatus, including a wind shielding body and a fin group; the wind shielding body comprises a first end and a second end which are opposite to each other along the airflow flowing direction; at least one side of body keeps out the wind is provided with fin group, fin group includes the fin that a plurality of intervals set up, and is a plurality of the fin is followed first end extremely the direction interval arrangement of second end, the fin is kept away from the one end orientation of body keeps out the wind the second end slope.

Further, a plurality of the fins are parallel to each other.

Further, in the direction from the first end to the second end, the length of the fin close to the second end is greater than that of the fin close to the first end in any two adjacent fins.

Further, along the direction from the first end to the second end, the lengths of the plurality of fins are increased in an arithmetic progression.

Further, the length of the fin is 3-9 mm; and/or the distance between two adjacent fins is 1-10 mm.

Further, the distance between adjacent fins is 2-4 mm.

Furthermore, the included angle between the fin and the wind shielding body is 10-45 degrees.

Furthermore, the included angle between the fin and the wind shielding body is 25-35 degrees.

Further, two opposite ends of each fin are flush with the end of the wind shielding body.

Furthermore, the opposite sides of the wind shielding body are provided with the fin groups.

A second aspect of the embodiments of the present application provides a blowing apparatus, including an air duct assembly and any one of the above-mentioned swinging blades; an air duct is formed in the air duct assembly, the swing blade is arranged in the air duct, and air flow in the air duct flows along the direction from the first end to the second end of the wind shielding body.

Further, the air duct comprises a first air outlet channel and a second air outlet channel; the blowing equipment comprises a heating body, and the heating body is arranged in the first air outlet channel; the opposite two sides of the wind shielding body are provided with the fin groups, the swinging blades are rotatably arranged in the air duct, and the swinging blades can selectively block the first air outlet channel or the second air outlet channel.

Further, the swing blade further comprises a connecting portion arranged at the second end of the wind shielding body, two ends of the connecting portion protrude out of the wind shielding body, and the swing blade is rotatably supported in the wind channel through the connecting portion.

According to the swing blade provided by the embodiment of the application, when air flows over the surface of the swing blade, different fins form different 'reflection' turbulent flow effects on at least part of air flow of the air flow boundary layer, the fins disturb the air flow path in the air flow boundary layer, eddy current can be inhibited or weakened to a certain extent, and noise of the blowing equipment is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a swing blade according to an embodiment of the present application;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

fig. 3 is a schematic structural diagram of a blowing apparatus according to an embodiment of the present application;

FIG. 4 is a schematic view of the structure of FIG. 3 from another perspective;

FIG. 5 is a cross-sectional view taken along the line A-A in FIG. 4;

fig. 6 is a schematic view of the structure shown in fig. 5 after the swing blade swings to another position.

Description of the reference numerals

A housing 10; a first outlet 101; a second outlet 102; an air duct assembly 20; an air duct 201; a first air outlet channel 201 a; a second air outlet channel 201 b; a heating element 30; a swinging blade 40; a wind shielding body 41; a fin group 42; the fins 42'; connecting part 43

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the description of the present application, the "up," "down," "left," "right," "front," "back," "top," "bottom" orientations or positional relationships are based on the orientations or positional relationships illustrated in FIG. 3, it being understood that these orientation terms are merely used to facilitate the description of the present application and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the embodiments of the present application, "first end" and "first end" are used to refer to the orientation.

An embodiment of the present application provides a blowing device, please refer to fig. 3 to 6, the blowing device includes a housing 10, an air duct assembly 20 and a swing blade 40, wherein the air duct assembly 20 is disposed in the housing 10, an air duct 201 is formed in the air duct assembly 20, and the swing blade 40 is disposed in the air duct 201, so that an air flow can flow through a surface of the swing blade 40.

Referring to fig. 1 and 2, the swing blade 40 includes a wind shielding body 41 and a fin set 42, the wind shielding body 41 is wind-tight, that is, when the airflow flows through the surface of the swing blade 40, the airflow does not penetrate from the surface of one side of the swing blade 40 to the surface of the other side; the wind shielding body 41 includes first and second ends opposite in the airflow flowing direction; at least one side of the wind shielding body 41 is provided with a fin group 42, the fin group 42 comprises a plurality of fins 42 'arranged at intervals, the plurality of fins 42' are arranged at intervals along the direction from the first end to the second end, one end of the fin 42 'far away from the wind shielding body 41 inclines towards the second end, that is, the plurality of fins 42' are sequentially arranged along the direction from the first end to the second end to form a structure similar to a fish scale, so as to reduce the resistance of the airflow flowing on the surface of the swinging blade 40.

In the related art, the flow velocity of the air flow in the air duct is high, and the turning and turning position of the air flow in the air duct is easy to form a vortex, so that high noise is caused. According to the swing blade 40 provided by the embodiment of the application, when the airflow flows through the surface of the swing blade 40, different fins 42 'form different' reflection 'turbulence effects on at least part of the airflow flow boundary layer, and the fins 42' disturb the airflow flow path in the flow boundary layer, so that the vortex can be inhibited or weakened to a certain extent, and the noise of the blowing equipment is reduced.

It should be noted that the boundary layer refers to that if the air flow fluid contacts with the object and has relative motion, the thin fluid layer near the object surface has reduced speed due to viscous shear stress; the fluid tightly attached to the object surface is adhered to the object surface, and the relative speed of the fluid and the object surface is equal to zero; the velocity of each layer gradually increases from the object surface to the free flow rate, and the fluid deceleration thin layer is called a boundary layer. That is to say, the fin group 42 in this scheme has a better turbulent flow effect on the boundary layer of the airflow flow, and does not substantially affect the airflow flow in the free flow velocity region.

In one embodiment, the plurality of fins 42' are parallel to each other. That is, the plurality of fins 42' are regularly arranged obliquely to minimize flow resistance to the air flow.

In one embodiment, referring to FIG. 2, the distance d between two adjacent fins 42' is 1-10mm, such as 1mm, 2mm, 3mm, 4mm, 5mm, 7mm, 9mm, etc. If the distance d between two adjacent fins 42' is too large, the airflow resistance of the airflow is easily increased, and the turbulent flow effect is not good; if the distance d between two adjacent fins 42 'is too small, that is, the fins 42' are arranged too densely, more material will be wasted, and the cost will be increased. This interval d of two adjacent fins 42' of this application embodiment can ensure to have better vortex effect, also can compromise manufacturing cost. Further, in an embodiment, the distance d between two adjacent fins 42' is 2-4mm, for example, 2mm, 3mm, 4mm, and the range of the distance d can better consider the turbulence effect and the production cost. It is understood that the distance d between any two adjacent fins 42' may be equal or unequal, and is not limited herein.

In one embodiment, in the direction from the first end to the second end, the length L of the fin 42 ' near the second end is greater than the length L of the fin 42 ' near the first end in any two adjacent fins 42 '. That is to say, length L of a plurality of fins 42 'is the growth trend from first end to second end, so can make in the air current flow process, the one end homoenergetic that keeps away from the body 41 that keeps out the wind of every fin 42' is kept away from can contact with the air current, plays the vortex effect. It is understood that the difference between the lengths L of the adjacent fins 42' may be greater or smaller, equal or unequal. For example, in the embodiment of the present application, the lengths L of the plurality of fins 42 'are increased in an arithmetic progression along the direction from the first end to the second end, so that the fins 42' are neatly arranged on the surface of the wind shielding body 41, and the flow disturbing effect on the airflow is good.

In one embodiment, the length L of the fins 42' is 3-9mm, such as 3mm, 5mm, 7mm, 9mm, etc. It can be understood that if the length L of the fin 42 'is too short, the contact area between the fin 42' and the airflow is too small, which affects the flow disturbance effect; the length L of the fins 42 'if too long, increases the size of the swing blade 40 and also affects the placement of adjacent fins 42'.

In one embodiment, referring to fig. 2, the included angle β between the fin 42 ' and the wind shielding body 41 is 10 ° -45 °, for example, 10 °, 20 °, 25 °, 35 °, 45 °, and the like, the included angle range can enable the fin 42 ' to have a better flow disturbing effect on the airflow and can also reduce the flow resistance of the fin 42 ' to the airflow, further, the included angle β between the fin 42 ' and the wind shielding body 41 is 25 ° -35 °, for example, 25 °, 30 °, 35 °, and the like, so that the fin 42 ' can have a better flow disturbing effect on the airflow and a smaller airflow flow resistance.

In an embodiment, the opposite ends of each fin 42 'are flush with the end of the wind shielding body 41, so that the fins 42' are distributed over the entire surface of the wind shielding body 41, and the swing blade 40 has a better flow disturbing effect.

The wind shielding body 41 may be provided with the fin group 42 on one side, or may be provided with the fin group 42 on both opposite sides. In the case where the wind shielding body 41 is fixedly provided in the air duct 201, the fin group 42 may be provided on one side of the wind shielding body 41; under the condition that the wind shielding body 41 is rotatably disposed in the wind duct 201, the fin groups 42 may be disposed on two opposite sides of the wind shielding body 41, so that the two opposite sides of the wind shielding body 41 have a spoiler effect.

Referring to fig. 5 and 6, the air duct 201 includes a first air outlet channel 201a and a second air outlet channel 201b, and referring to fig. 3 and 4, a first outlet 101 and a second outlet 102 are formed on the housing 10, and an air flow blown out from the first air outlet channel 201a can be discharged through the first outlet 101, and an air flow blown out from the second air outlet channel 201b can be discharged through the second outlet 102. It is understood that the first outlet 101 and the second outlet 102 may be spaced apart from each other or may be in communication with each other.

Referring to fig. 5 and 6, the blowing device includes a heating element 30, the heating element 30 is disposed in the first air outlet channel 201 a; the opposite sides of the wind shielding body 41 are provided with the fin groups 42, the swing blades 40 are rotatably arranged in the air duct 201, and the swing blades 40 can selectively block the first wind outlet channel 201a or the second wind outlet channel 201 b. When the flap 40 blocks the first air outlet channel 201a, the fin group 42 on one side of the flap 40 contacts with the air flow, the air flow is discharged from the second air outlet channel 201b, and the air flow does not pass through the heating element 30, so that the air flow blown out from the second air outlet channel 201b has small air resistance, large air volume and high air speed, and the blowing device blows cold air, thereby achieving the function of a fan. When the swing blade 40 blocks the second air outlet channel 201b, the fin group 42 on the other side of the swing blade 40 contacts with the air flow, the air flow is heated by the heating element 30 in the second air outlet channel 201b and then discharged, and the blowing device blows warm air to achieve the heating function. In the embodiment of the application, the air blowing device realizes the switching of the cold and warm modes through the rotation of the swinging blade 40, and the switching mode is simple and convenient.

In order to facilitate the swing of the swing blade 40, in the embodiment of the present application, please refer to fig. 1 and fig. 2, the swing blade 40 further includes a connecting portion 43 disposed at the second end of the wind shielding body 41, two ends of the connecting portion 43 protrude out of the wind shielding body 41, and the swing blade 40 is rotatably supported in the air duct 201 through the connecting portion 43.

It should be noted that the swing blade 40 may be driven automatically or manually, and is not limited herein.

In the embodiment of the present application, the first outlet channel 201a and the second outlet channel 201b are arranged side by side along the left-right direction of the orientation shown in fig. 3, and it is understood that the first outlet channel 201a and the second outlet channel 201b may also be arranged along the height direction of the blowing device, that is, along the up-down direction of fig. 3, that is, the first outlet channel 201a is located above or below the second outlet channel 201b, in another embodiment, the first outlet channel 201a and the second outlet channel 201b are arranged along the front-back direction of fig. 4, specifically, one of the first outlet channel 201a and the second outlet channel 201b is located in front of the blowing device, and one of the first outlet channel 201a and the second outlet channel 201b is located behind the blowing device.

The various embodiments/implementations provided herein may be combined with each other without contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. Swing leaf of equipment of blowing, its characterized in that includes:

a wind shielding body (41), the wind shielding body (41) comprising a first end and a second end opposite in an airflow flow direction;

the wind shielding structure comprises a fin group (42), at least one side of the wind shielding body (41) is provided with the fin group (42), the fin group (42) comprises a plurality of fins (42 ') arranged at intervals, the fins (42 ') are arranged at intervals along the direction from the first end to the second end, and one end, away from the wind shielding body (41), of each fin (42 ') inclines towards the second end.

2. The swing blade according to claim 1, wherein a plurality of said fins (42') are parallel to each other.

3. The swing blade according to claim 1, wherein in a direction from the first end to the second end, the length of the fin (42 ') near the second end is greater than the length of the fin (42 ') near the first end in any two adjacent fins (42 ').

4. The swing blade according to claim 3, wherein the length of the plurality of fins (42') increases in an arithmetic progression from the first end to the second end.

5. A swing blade according to claim 1, wherein the length of the fin (42') is 3-9 mm; and/or the distance between two adjacent fins (42') is 1-10 mm.

6. The swing blade according to claim 5, wherein the distance between adjacent fins (42') is 2-4 mm.

7. The oscillating vane according to claim 1, characterized in that the angle between the fin (42') and the wind deflector body (41) is 10 ° -45 °.

8. The oscillating vane according to claim 7, characterized in that the angle between the fin (42') and the wind deflector body (41) is 25 ° -35 °.

9. The oscillating vane, according to claim 1, characterized in that the opposite ends of each fin (42') are flush with the ends of the wind-shielding body (41).

10. Oscillating vane according to any one of claims 1 to 9, characterized in that the groups of fins (42) are provided on opposite sides of the wind-shielding body (41).

11. Blowing apparatus, its characterized in that includes:

an air duct assembly (20), an air duct (201) is formed in the air duct assembly (20),

the swinging vane is as set forth in any one of claims 1 to 9 and is arranged in the air duct (201), and the airflow in the air duct (201) flows along the direction from the first end to the second end of the wind shielding body (41).

12. Blowing device according to claim 11, characterized in that the air duct (201) comprises a first blowing channel (201a) and a second blowing channel (201 b); the blowing equipment comprises a heating element (30), and the heating element (30) is arranged in the first air outlet channel (201 a); the opposite two sides of the wind shielding body (41) are provided with the fin groups (42), the swinging blades are rotatably arranged in the air duct (201), and the swinging blades can selectively block the first wind outlet channel (201a) or the second wind outlet channel (201 b).

13. The blowing apparatus according to claim 11, wherein the swing blade further includes a connection portion (43) provided at the second end of the wind shielding body (41), both ends of the connection portion (43) protrude from the wind shielding body (41), and the swing blade is rotatably supported in the wind tunnel (201) by the connection portion (43).