Volute structure and centrifugal fan

Abstract

The utility model discloses a volute structure and a centrifugal fan. The volute structure comprises a shell, a bottom cover, a driving part, a wind wheel assembly and a pressing ring. The shell comprises a motor bin and a wind wheel bin, the motor bin is located above the wind wheel bin, an opening of the motor bin faces downwards and communicates with an inner cavity of the wind wheel bin, and a connecting area is formed between the motor bin and the wind wheel bin. The bottom cover is located below the shell, and the shell is fixedly connected with the bottom cover. And the driving part is arranged in the motor cabin. The wind wheel assembly is arranged in the wind wheel bin. The pressing ring is arranged in the connecting area and fixedly connected to the shell. The motor bin and the wind wheel bin are integrally formed, and the procedure that the motor bin and the wind wheel bin need to be fixed in the later period is avoided; when the assembly is installed, the driving part and the wind wheel assembly are sequentially installed in the shell. According to the volute structure, quick assembly can be achieved when components are assembled, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a volute structure and a centrifugal fan. Background Art

[0002] The outer shell of a centrifugal fan is assembled from a volute and a motor shell. At present, the volute and the motor shell are usually cast separately, the wind wheel is installed in the volute, the motor assembly is installed in the motor shell, and then the volute and the motor shell are assembled together, and the motor assembly and the wind wheel need to be assembled together at the same time. The above assembly method is time-consuming and labor-intensive, and requires many installation processes. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the utility model proposes a volute structure and a centrifugal fan.

[0004] In a first aspect, an embodiment of the utility model provides a volute structure, the volute structure comprising:

[0005] A housing, wherein the housing comprises a motor compartment and a wind wheel compartment, wherein the motor compartment is located above the wind wheel compartment, the motor compartment and the wind wheel compartment are integrally formed, the motor compartment opening faces downward and is communicated with an inner cavity of the wind wheel compartment, and a connection area is formed between the motor compartment and the wind wheel compartment;

[0006] A bottom cover is located below the shell, and the shell is fixedly connected to the bottom cover;

[0007] A driving component is arranged in the motor compartment;

[0008] A wind wheel assembly is arranged in the wind wheel compartment;

[0009] A pressure ring is arranged in the connection area and fixedly connected to the shell.

[0010] The volute structure according to the embodiment of the utility model has at least the following technical effects: the motor compartment and the wind wheel compartment are integrally formed, avoiding the need to fix the motor compartment and the wind wheel compartment to each other later; when installing the components, the driving component and the wind wheel component are installed in the housing in sequence. The volute structure can realize quick assembly of the components, saving time and effort.

[0011] According to some embodiments of the utility model, an air inlet hole is provided in the middle of the bottom cover, an air guide ring is provided at the air inlet hole, and an outer peripheral wall of the air guide ring is fixedly connected to the hole wall of the air inlet hole.

[0012] According to some embodiments of the present invention, the outlet end of the air guide ring is bent and extended toward the shell.

[0013] According to some embodiments of the utility model, the upper end surface of the bottom cover is provided with a first annular groove, and the lower end surface of the shell is provided with an annular convex portion, and the annular convex portion is inserted into the first annular groove.

[0014] According to some embodiments of the utility model, the outer peripheral wall of the shell is provided with a plurality of first lugs, and the outer peripheral wall of the bottom cover is provided with a plurality of second lugs, the plurality of first lugs and the plurality of second lugs correspond one to one, and the bolts pass through the first lugs and the second lugs at the same time to relatively fix the shell and the bottom cover.

[0015] According to some embodiments of the present invention, a plurality of the first lugs are distributed circumferentially around the axis of the shell, and a plurality of the second lugs are distributed circumferentially around the axis of the bottom cover.

[0016] According to some embodiments of the present utility model, the shell includes a shell body and a top cover, the upper end of the shell body is provided with a mounting hole, and the top cover is fixedly connected to the shell body to block the mounting hole.

[0017] According to some embodiments of the present utility model, a second annular groove is provided at the upper end of the shell body, and the lower end of the top cover is inserted into the second annular groove.

[0018] According to some embodiments of the present invention, the second annular groove includes a groove bottom and an outer groove wall, the lower end of the top cover abuts against the groove bottom, and the outer peripheral wall of the top cover abuts against the outer groove wall.

[0019] In a second aspect, an embodiment of the utility model further provides a centrifugal fan, comprising a volute structure according to the embodiment of the first aspect of the utility model.

[0020] The centrifugal fan according to the embodiment of the utility model has at least the following technical effects: the centrifugal fan adopts the volute structure, the motor compartment and the wind wheel compartment are formed in one piece, avoiding the need to fix the motor compartment and the wind wheel compartment to each other later; when installing the components, the driving component and the wind wheel component are installed in the housing in sequence. The volute structure can realize quick assembly when assembling the components, saving time and effort.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a structural schematic diagram of the volute structure of some embodiments of the utility model;

[0024] Figure 2 is a cross-sectional view of the volute structure of some embodiments of the utility model;

[0025] Figure 3 is an exploded view of the volute structure of some embodiments of the utility model;

[0026] Figure 4 It is a schematic diagram of the structure of the housing of some embodiments of the utility model;

[0027] Figure 5 It is a cross-sectional view of another volute structure of some embodiments of the utility model.

[0028] Figure Number:

[0029] The housing 100, the motor compartment 110, the wind wheel compartment 120, the connection area 130, the annular protrusion 140, the first lug 150, the shell 161, the top cover 162, the mounting hole 170, the second annular groove 180, the groove bottom 181, and the outer groove wall 182;

[0030] Bottom cover 200, air inlet hole 210, air guide ring 220, first annular groove 230, second lug 240;

[0031] Driving component 300 , wind wheel assembly 310 , and pressure ring 320 . DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present utility model, the meaning of "more than" is more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings.

[0037] According to some embodiments of the present invention, referring to Figures 1 to 3 The volute structure includes a housing 100, a bottom cover 200, a driving component 300, a wind wheel assembly 310 and a pressure ring 320. The axial directions of the housing 100 and the bottom cover 200 are both up and down. The housing 100 includes a motor compartment 110 and a wind wheel compartment 120. The motor compartment 110 is located above the wind wheel compartment 120. The motor compartment 110 and the wind wheel compartment 120 are integrally formed. The motor compartment 110 opens downward and is connected to the inner cavity of the wind wheel compartment 120. A connection area 130 is formed between the motor compartment 110 and the wind wheel compartment 120. The bottom cover 200 is located below the housing 100, and the housing 100 is fixedly connected to the bottom cover 200. The driving component 300 is disposed in the motor compartment 110. The wind wheel assembly 310 is disposed in the wind wheel compartment 120. The pressure ring 320 is disposed in the connection area 130 and is fixedly connected to the housing 100.

[0038] It is understandable that the motor compartment 110 and the wind wheel compartment 120 are integrally formed, avoiding the need to fix the motor compartment 110 and the wind wheel compartment 120 to each other later. When installing the assembly, the driving component 300 is loaded into the housing 100 from bottom to top, and passes through the wind wheel compartment 120 to reach the motor compartment 110. Then, the pressure ring 320 is loaded into the connection area 130. The pressure ring 320 and the inner wall of the housing 100 are interference fit, so that the pressure ring 320 is fixedly connected to the housing 100. The pressure ring 320 can limit the driving component 300 from moving downward and leaving the motor compartment 110; then, the wind wheel assembly 310 is installed from bottom to top in the wind wheel compartment 120; then, the bottom cover 200 is fixedly connected to the volute. The volute structure can realize quick assembly when assembling the assembly, saving time and effort.

[0039] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 The bottom cover 200 has an air inlet hole 210 in the middle, and an air guide ring 220 is provided at the air inlet hole 210. The outer peripheral wall of the air guide ring 220 is fixedly connected to the hole wall of the air inlet hole 210. The outlet end of the air guide ring 220 is bent and extended toward the housing 100, that is, the air guide ring 220 is gradually bent upward from the outside to the inside. During operation, the gas passes through the air guide ring 220. Since the outlet of the air guide ring 220 is bent and extended toward the housing 100, the air guide ring 220 guides the air flow into the interior of the housing 100.

[0040] According to some embodiments of the present invention, referring to Figure 3 and Figure 4 The upper end surface of the bottom cover 200 is provided with a first annular groove 230, and the lower end surface of the shell 100 is provided with an annular protrusion 140, which is inserted into the first annular groove 230 to facilitate relative positioning of the bottom cover 200 and the shell 100, so as to facilitate fixed connection between the bottom cover 200 and the shell 100.

[0041] According to some embodiments of the present invention, referring to Figure 1 and Figure 3 The outer peripheral wall of the shell 100 is provided with a plurality of first lugs 150, and the outer peripheral wall of the bottom cover 200 is provided with a plurality of second lugs 240. The plurality of first lugs 150 and the plurality of second lugs 240 correspond to each other one by one. Both the first lug 150 and the second lug 240 are provided with threaded holes. Bolts pass through the threaded holes of the first lug 150 and the second lug 240 at the same time to relatively fix the shell 100 and the bottom cover 200.

[0042] Furthermore, a plurality of first lugs 150 are distributed circumferentially around the axis of the housing 100 , and a plurality of second lugs 240 are distributed circumferentially around the axis of the bottom cover 200 , so as to enhance the connection stability between the bottom cover 200 and the housing 100 .

[0043] According to some embodiments of the present invention, referring to Figure 5 The housing 100 includes a shell body 161 and a top cover 162. The upper end of the shell body 161 is provided with a mounting hole 170. The shell body 161 is composed of a motor compartment 110 and a wind wheel compartment 120. The top cover 162 can be fixedly connected to the shell body 161 to block the mounting hole 170. The top cover 162 is fixedly connected to the shell body 161 by bolts, or the top cover 162 and the shell body 161 are fixed to each other by welding.

[0044] It is understandable that the driving component 300 can be installed into the motor compartment 110 from top to bottom, and then the mounting hole 170 is blocked by the top cover 162 to prevent the driving component 300 from escaping from the motor compartment 110 upward.

[0045] According to some embodiments of the present invention, referring to Figure 5 The upper end of the shell body 161 is provided with a second annular groove 180, and the lower end of the top cover 162 is inserted into the second annular groove 180. The second annular groove 180 includes a groove bottom 181 and an outer groove wall 182. The lower end of the top cover 162 abuts against the groove bottom 181, and the outer peripheral wall of the top cover 162 abuts against the outer groove wall 182, so as to enhance the sealing performance of the top cover 162 in blocking the mounting hole 170.

[0046] In the description of this specification, the description with reference to the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A volute structure, characterized in that: include: A housing (100), the housing (100) comprising a motor compartment (110) and a wind wheel compartment (120), the motor compartment (110) being located above the wind wheel compartment (120), the motor compartment (110) and the wind wheel compartment (120) being integrally formed, the motor compartment (110) opening facing downward and being in communication with an inner cavity of the wind wheel compartment (120), and a connection area (130) being formed between the motor compartment (110) and the wind wheel compartment (120); A bottom cover (200) is located below the housing (100), and the housing (100) is fixedly connected to the bottom cover (200); A driving component (300) is disposed in the motor compartment (110); A wind wheel assembly (310) is disposed in the wind wheel compartment (120); A pressure ring (320) is disposed in the connection area (130) and fixedly connected to the housing (100).

2. The volute structure according to claim 1, characterized in that: An air inlet hole (210) is provided in the middle of the bottom cover (200), an air guide ring (220) is provided at the air inlet hole (210), and an outer peripheral wall of the air guide ring (220) is fixedly connected to the hole wall of the air inlet hole (210).

3. The volute structure according to claim 2, characterized in that: The outlet end of the air guide ring (220) bends and extends toward the housing (100).

4. The volute structure according to claim 1, characterized in that: The upper end surface of the bottom cover (200) is provided with a first annular groove (230), and the lower end surface of the shell (100) is provided with an annular convex portion (140), and the annular convex portion (140) is inserted into the first annular groove (230).

5. The volute structure according to claim 1, characterized in that: The outer peripheral wall of the shell (100) is provided with a plurality of first lugs (150), and the outer peripheral wall of the bottom cover (200) is provided with a plurality of second lugs (240), the plurality of first lugs (150) and the plurality of second lugs (240) correspond to each other one by one, and bolts pass through the first lugs (150) and the second lugs (240) at the same time to relatively fix the shell (100) and the bottom cover (200).

6. The volute structure according to claim 5, characterized in that: A plurality of the first lugs (150) are distributed circumferentially around the axis of the housing (100), and a plurality of the second lugs (240) are distributed circumferentially around the axis of the bottom cover (200).

7. The volute structure according to claim 1, characterized in that: The housing (100) comprises a shell body (161) and a top cover (162); a mounting hole (170) is provided at the upper end of the shell body (161); and the top cover (162) is fixedly connected to the shell body (161) to block the mounting hole (170).

8. The volute structure according to claim 7, characterized in that: The upper end of the shell body (161) is provided with a second annular groove (180), and the lower end of the top cover (162) is inserted into the second annular groove (180).

9. The volute structure according to claim 8, characterized in that: The second annular groove (180) comprises a groove bottom (181) and an outer groove wall (182), the lower end of the top cover (162) abuts against the groove bottom (181), and the outer peripheral wall of the top cover (162) abuts against the outer groove wall (182).

10. A centrifugal fan, characterized in that: The invention comprises a volute structure as claimed in any one of claims 1 to 9.

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