CN205047527U

CN205047527U - Volute structure

Info

Publication number: CN205047527U
Application number: CN201520705626.2U
Authority: CN
Inventors: 王朝新; 潘龙腾; 姚俊华; 李德清; 吴舸; 金海元; 丘晓宏; 孟宪运; 张永成; 曾庆和; 温骊; 陈圣文; 杨杰; 臧允舒; 林裕亮
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2015-09-11
Filing date: 2015-09-11
Publication date: 2016-02-24
Anticipated expiration: 2025-09-11

Abstract

An object of the utility model is to provide a spiral case structure mainly solves the current little problem of spiral case structure volume. The axial section containing the axis of the impeller is seen, the distance from each point on the peripheral wall of the volute close to the midline of the volute to the axis is greater than the distance from each point on the peripheral wall of the volute on two sides to the axis. The utility model discloses a spiral case structure compares ordinary spiral case and has bigger volume, can improve air supply efficiency.

Description

Volute structure

Technical Field

The utility model relates to an air supply mechanism field, concretely relates to spiral case structure.

Background

The currently available volute blower, as shown in FIG. 1, includes an integrally formed volute 94 and mounting plate 92. The volute 94 and the mounting plate 92 are connected to form an impeller rotation space and an air supply passage therein. The peripheral wall of the volute 94 surrounds the periphery of the impeller and is substantially perpendicular to the side wall. This type of volute has a relatively small volume and is not efficient enough for air supply. In addition, no sealing structure is arranged at the joint of the volute 94 and the mounting plate 92, and the air-tight effect is not good.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a big volumetric spiral case to solve the less problem of spiral case volume.

To achieve the purpose, the utility model adopts the following technical proposal:

a volute structure comprises a volute for accommodating an impeller, and the distance from each point on the peripheral wall of the volute close to the midline of the volute to an axis of the impeller is larger than the distance from each point on the peripheral walls of the volutes at two sides to the axis when the volute is seen from an axial section containing the axis of the impeller.

Preferably, in the volute structure, the axial cross section of the volute peripheral wall is arc-shaped, trapezoid-shaped, cut-off arc-shaped or triangular.

Preferably, in the volute structure, the volute includes a first half-shell including a first half-shell peripheral wall and a first half-shell side wall, and a second half-shell including a second half-shell peripheral wall and a second half-shell side wall, and the first half-shell peripheral wall is connected to the second half-shell peripheral wall.

Preferably, in the aforementioned scroll casing structure, the first half-shell peripheral wall and the second half-shell peripheral wall are curved in such a manner as to rotate about the axis; the first half shell peripheral wall comprises a fixed end connected with the edge part of the first half shell side wall and a first connecting end far away from the first half shell side wall, and the second half shell peripheral wall comprises a fixed end connected with the edge part of the second half shell side wall and a second connecting end far away from the second half shell side wall; the first connecting end is connected with the second connecting end.

Preferably, in the volute structure, the first half-shell peripheral wall extends in a direction away from the axis in a radial direction from the fixed end to the first connection end, and the second half-shell peripheral wall extends in a direction away from the axis in a radial direction from the fixed end to the second connection end.

Preferably, in the volute structure, a first sealing structure is provided at a junction of the first half shell and the second half shell.

Preferably, in the volute structure described above, the first sealing structure includes: the convex rib is arranged at the first connecting end, and the concave groove is arranged at the second connecting end; alternatively, the first sealing structure includes: the groove is arranged at the first connecting end, and the convex rib is arranged at the second connecting end; when the first half shell is connected with the second half shell, the convex rib is embedded into the groove.

Preferably, in the volute structure, the first sealing structure includes a first sealing ring, and one of the first half shell and the second half shell is provided with a radially extending flange, and the other is provided with a groove, and the flange abuts against the groove and presses the sealing ring in the groove to realize sealing.

Preferably, in the volute structure, a motor mounting opening is formed in the first half shell, a cylindrical support extending in the axial direction is arranged at the motor mounting opening of the first half shell, and a second sealing structure used for being matched with a motor is arranged on the cylindrical support.

Preferably, in the volute structure, the second sealing structure is a second sealing ring arranged at an end or on an inner wall of the cylindrical support, and the second sealing ring is used for being in sealing fit with an outer peripheral wall of the motor.

The utility model has the advantages that:

1. the volute has larger volume than the common volute, and can improve air supply efficiency.

2. The volute is manufactured into a structure of two half shells, so that the volute is convenient to manufacture and install.

3. The volute joint is provided with a sealing structure, so that the air tightness of the volute is improved, and the air supply efficiency is improved.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

figure 1 is an exploded schematic view of a prior art volute.

Fig. 2 is an exploded schematic view of the volute structure of the present invention.

Fig. 3 is an external view of the scroll casing structure of the present invention.

Fig. 4 is a sectional view of the scroll casing structure of the present invention in an actual use state.

Fig. 5 is a partially enlarged view of a region B in fig. 4.

Fig. 6 is a partially enlarged view of the region C in fig. 4.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, and components have not been described in detail so as not to obscure the present invention.

The volute structure of the present invention is used to house an impeller (not shown). In the following description, the axial direction is defined as a direction parallel to the impeller axis 144, the radial direction is defined as a direction perpendicular to the impeller axis 144, and the circumferential direction is defined as a direction of rotation about the impeller axis 144; the lateral directions are relative to the direction of the impeller axis 144, for example, in fig. 3 the first half-shell 13 is located on one side, the second half-shell 15 is located on the other side, and the impeller 14 is located in the middle of the first half-shell 13 and the second half-shell 15. Hereinafter, the axis 144 of the impeller is simply referred to as the axis 144.

In the present embodiment, as shown in fig. 2 and 4, the volute is used for accommodating the impeller, and when viewed from an axial section including the axis of the impeller, the distance from each point on the peripheral wall of the volute close to the centerline of the volute to the axis is greater than the distance from each point on the peripheral wall of the volute on both sides to the axis 144. Wherein the aforementioned volute centerline refers to the centerline 139 of the volute that is perpendicular to the impeller axis 144. Preferably, the distance from each point on the inner wall of the volute peripheral wall near the center line 139 of the volute to the axis 144 in the direction of the axis 144 is larger than the distance from each point on the inner wall of the volute peripheral wall on both sides of the axis to the axis 144, as shown in fig. 4, in an axial section of the volute taken by cutting the volute from a plane containing the axis 144 of the impeller. Preferably, the axial section of the inner wall of the peripheral wall of the volute is arc, trapezoid, arc of cut edge or triangle matching with the shape of the peripheral wall. By designing the inner wall of the peripheral wall of the volute to be a structure protruding in the middle, different vertical air-conditioning structures with curved shells can be adapted. In addition, the volume in the volute can be increased, and the air supply capacity of the volute fan is improved.

For convenience of manufacture, the volute may be provided in a separate structure. As shown in fig. 2-4. The volute comprises a first half-shell 13 and a second half-shell 15, the first half-shell 13 comprising a first half-shell circumferential wall 131 and a first half-shell side wall 132, the second half-shell comprising a second half-shell circumferential wall 151 and a second half-shell side wall 152, the first half-shell circumferential wall 131 being connected with the second half-shell circumferential wall 151. The first half-shell perimeter wall 131 and the second half-shell perimeter wall 151 are curved in a rotational manner about the axis 144. The first half-shell peripheral wall 131 includes a fixed end connected to the edge portion of the first half-shell side wall 132 and a first connection end 1311 distant from the first half-shell side wall 132, the second half-shell peripheral wall 151 includes a fixed end connected to the edge portion of the second half-shell side wall 152 and a second connection end 1511 distant from the second half-shell side wall 152, and the first connection end 1311 of the first half-shell peripheral wall 131 is connected to the second connection end 1511 of the second half-shell peripheral wall 151, so that the insides of the first half-shell 13 and the second half-shell 15 form an accommodation chamber for accommodating the impeller 14 and are formed in a cylindrical shape whose radius with respect to the axis 144 becomes larger in the rotation direction of the impeller 14.

The motor 11 includes a motor body 117 and a rotating shaft 112. In an actual use state, as shown in fig. 4, the impeller 14 is mounted in a housing chamber inside the scroll casing, and has a cylindrical shape in which a plurality of vanes 141 formed to be elongated in the axial direction of the axis 144 are arranged radially with respect to the axis 144 at predetermined intervals. One end of the vane 141 is mounted to an outer peripheral portion of the substantially circular rotating member 142, and the other end of the vane 141 is mounted to an annular support ring 143 and forms an impeller inlet inside. The rotary member 142 is fixed to a rotation shaft of the motor at the center, and the impeller 14 rotates about the rotation shaft by the driving of the motor 11. The first half shell 13 is provided with a motor mounting opening 133, the rotating member 142 of the impeller is arranged close to the motor mounting opening 133, the rotating shaft 112 of the motor 11 penetrates through the motor mounting opening 133 to be connected with the rotating member 142 of the impeller 14, so as to drive the rotating member 142 to rotate, the second half shell 15 is provided with a volute air inlet 153, and the volute air inlet 153 and the impeller air inlet are oppositely arranged to guide air to the inner side of the impeller 14. The motor body 117 is supported by the first half-shell 13.

The first half-shell circumferential wall 131 extends in the radial direction away from the axis 144 from the fixed end to the first connection end 1311, and the second half-shell circumferential wall 151 extends in the radial direction away from the axis 144 from the fixed end to the second connection end 1511. Preferably, the first connection end 1311 of the first half-shell circumferential wall 131 and the second connection end 1511 of the second half-shell circumferential wall 151 are connected close to or coincident with the volute centerline 139 perpendicular to the axis 144.

Preferably, in order to improve the air tightness of the volute, a first sealing structure may be provided at the junction of the first half-shell 13 and the second half-shell 15. Preferably, the first sealing structure is a rib provided on one of the first connecting end 1311 of the first half-shell peripheral wall 131 and the second connecting end 1511 of the second half-shell peripheral wall 151 and a groove provided on the other, and preferably, as shown in fig. 5, the first connecting end 1311 of the first half-shell peripheral wall 131 is provided with a rib 1312 extending toward the second half-shell 15, the second connecting end 1511 of the second half-shell peripheral wall 151 is provided with a groove 1512 corresponding to the rib 1312, and when the first half-shell 13 is connected to the second half-shell 15, the rib 1312 is embedded in the groove 1512, so that the sealing performance of the half-shells can be improved, and the peripheral wall of the volute can be prevented from leaking to reduce the efficiency of the volute fan. The ribs 1312 and grooves 1512 may be provided in one or more than one arrangement. Or, the first sealing structure is that a groove is arranged at the first connecting end 1311, and a rib is arranged at the second connecting end 1511.

Preferably, the first sealing structure may also be in the form of a sealing ring, wherein a radially extending flange is provided on one of the first half-shell 13 and the second half-shell 15, and a groove is provided on the other, the flange abutting against the groove and pressing the first sealing ring in the groove to achieve sealing. The first sealing ring can be made of rubber or other soft materials. The sealing structure may be provided radially outside or radially inside the peripheral wall of the volute.

As a preferred embodiment, as shown in fig. 6, the rotating member 142 of the impeller 14 is disposed to protrude from the edge toward the axial center of the rotating member 142 toward the inside of the impeller 14, the rotating member 142 is substantially bowl-shaped or conical, the radially inner side of the rotating member 142 forms a motor accommodating space, the rotating shaft 112 of the motor passes through the volute and enters the volute, and a part of the motor main body 117 can be located in the motor accommodating space, which has the advantages of reducing the length of the motor 11 protruding out of the volute, reducing the installation width of the volute fan in the axial direction, and making the overall structure of the volute fan more compact. At this time, an inner concave portion 1321 is correspondingly formed on the first half casing side wall 132 of the first half casing 13, the motor mounting port 133 is provided at the center of the inner concave portion 1321, and the inner concave portion 1321 is also provided so as to protrude from the edge toward the axial center of the motor mounting port 133 toward the inside of the impeller 14.

Preferably, in order to improve the sealing between the volute and the motor main body 117, a cylindrical support 134 may be provided at an edge of the motor mounting opening 133 of the first half casing 13, the cylindrical support 134 having a through hole therein communicating with the motor mounting opening 133, as shown in fig. 6, a fixed end of the cylindrical support 134 being connected to the edge of the motor mounting opening 133, and a free end of the cylindrical support 134 extending in a direction away from the center of the volute on the axis. The motor body 117 passes through the cylindrical holder 134 and the motor mounting opening 133, and the rotary shaft 112 is connected to the impeller 14. A second sealing structure is arranged between the cylindrical support 134 and the outer peripheral wall of the motor body 117, preferably, the second sealing structure is a second sealing ring 135 arranged at the end part or on the inner wall of the cylindrical support 134, when the motor body 117 is positioned inside the cylindrical support 134, the second sealing ring 135 is in sealing fit with the outer peripheral wall of the motor body 117, and the motor mounting opening 133 can be sealed, so that the sealing at the motor mounting opening 133 is realized, and the wind leakage from the motor mounting opening is prevented to reduce the efficiency of the volute fan. Meanwhile, the second sealing ring 135 can also play a role in vibration reduction, so that the vibration transmitted to the volute by the motor is reduced. The second packing 135 may be mounted on the cylindrical holder 134 and may be mounted on the outer circumference of the motor main body 117. Preferably, the first half-shell 13 is provided with a plurality of mounting seats 136, and the support plate 12 is connected with the mounting seats 136 to be mounted on the first half-shell 13.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Also, it should be understood that the example embodiments are provided so that this disclosure will be thorough and will fully convey the scope to those skilled in the art. Numerous specific details are set forth such as examples of specific components, devices, and methods to provide a thorough understanding of the present disclosure. Those skilled in the art will understand that specific details need not be employed, that example embodiments may be embodied in many different forms and that example embodiments should not be construed as limiting the scope of the disclosure. In some example embodiments, well-known device structures and well-known technologies are not described in detail.

When an element or layer is referred to as being "on," "engaged to," "connected to" or "coupled to" another element or layer, it may be directly on, engaged, connected or coupled to the other element or layer or intervening elements or layers may be present. In contrast, when an element is referred to as being "directly on," "directly engaged to," "directly connected to" or "directly coupled to" another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" and "directly between," "adjacent" and "directly adjacent," etc.). As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another element, region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Spatially relative terms, such as "inner," "outer," "below," "lower," "above," "upper," and the like, are used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

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

Claims

1. A volute structure, comprising: the axial section containing the impeller axis shows that the distance from each point on the peripheral wall of the volute close to the midline of the volute to the axis is larger than the distance from each point on the peripheral wall of the volute on two sides to the axis (144).

2. The volute structure of claim 1, wherein: the axial section of the peripheral wall of the volute is arc-shaped, trapezoid, or cut-off arc-shaped or triangle.

3. The volute structure of claim 1 or 2, wherein: in the axis (144) direction, the volute comprises a first half-shell (13) and a second half-shell (15), the first half-shell (13) comprises a first half-shell perimeter wall (131) and a first half-shell side wall (132), the second half-shell comprises a second half-shell perimeter wall (151) and a second half-shell side wall (152), the first half-shell perimeter wall (131) is connected with the second half-shell perimeter wall (151).

4. The volute structure of claim 3, wherein: the first half-shell peripheral wall (131) and the second half-shell peripheral wall (151) are curved in a manner of rotating around the axis (144); the first half-shell peripheral wall (131) comprises a fixed end connected with the edge part of the first half-shell side wall (132) and a first connecting end (1311) far away from the first half-shell side wall (132), and the second half-shell peripheral wall (151) comprises a fixed end connected with the edge part of the second half-shell side wall (152) and a second connecting end (1511) far away from the second half-shell side wall (152); the first connection end (1311) and the second connection end (1511) are connected.

5. The volute structure of claim 4, wherein: the first half-shell circumferential wall (131) extends in a radial direction away from the axis (144) from the fixed end to the first connection end (1311), and the second half-shell circumferential wall (151) extends in a radial direction away from the axis (144) from the fixed end to the second connection end (1511).

6. The volute structure of claim 4, wherein: a first sealing structure is arranged at the joint of the first half shell (13) and the second half shell (15).

7. The volute structure of claim 6, wherein: the first seal structure includes: the convex rib is arranged at the first connecting end (1311), and the concave groove is arranged at the second connecting end (1511);

or,

the first seal structure includes: the groove is arranged at the first connecting end (1311), and the convex rib is arranged at the second connecting end (1511);

the rib is embedded in the groove when the first half-shell (13) is connected with the second half-shell (15).

8. The volute structure of claim 6, wherein: the first sealing structure comprises a first sealing ring, one of the first half shell (13) and the second half shell (15) is provided with a flange extending in the radial direction, the other half shell is provided with a groove, and the flange is abutted against the groove and presses the sealing ring in the groove to realize sealing.

9. The volute structure of claim 3, wherein: be equipped with motor installing port (133) on first half shell (13), first half shell (13) are in motor installing port (133) department is equipped with along axial extension's tube-shape support (134), be equipped with on tube-shape support (134) and be used for with motor complex second seal structure.

10. The volute structure of claim 9, wherein: the second sealing structure is a second sealing ring arranged on the end part or the inner wall of the cylindrical support (134), and the second sealing ring is used for being in sealing fit with the outer peripheral wall of the motor (11).