A double-impeller fan volute connection structure

Abstract

The utility model discloses a double-impeller fan volute connection structure, including a first shell, a second shell, and a partition; the first shell is provided with a first sealing structure on the side, the second shell is provided with a second sealing structure, the two sides of the first side of the partition are close to the first sealing structure, and the two sides of the second side of the partition are close to the second sealing structure; the first shell, the second shell, and the partition are fixedly connected by bolts. The utility model uses sealing strips embedded in the two shells to achieve shock absorption and sealing functions, prevent air leakage, and avoid bolts from falling off due to vibration, which is easy to use.

Description

Technical Field

[0001] The utility model relates to a double-impeller fan, in particular to a volute connection structure of a double-impeller fan. Background Art

[0002] Two impellers are installed inside a volute to form a double-impeller fan. This type of fan has a small size and is suitable for small space scenarios.

[0003] At present, the volute of the double impeller is generally composed of two shells spliced ​​together and directly fastened with bolts. However, this method will cause air leakage at the joint, and the vibration generated during operation will also cause the risk of the bolts coming off, which is inconvenient to use. Utility Model Content

[0004] In order to solve the defects of the above-mentioned prior art, the utility model provides a double-impeller fan volute connection structure. The utility model uses sealing strips embedded in the two shells to achieve shock absorption and sealing functions, prevent air leakage, and avoid bolts falling off due to vibration. The utility model is easy to use.

[0005] To achieve the above technical objectives, the utility model adopts the following technical solutions: a double-impeller fan volute connection structure, including a first shell, a second shell, and a partition; the side of the first shell is provided with a first sealing structure, the second shell is provided with a second sealing structure, the two side edges of the first side surface of the partition are closely attached to the first sealing structure, and the two side edges of the second side surface of the partition are closely attached to the second sealing structure; the first shell, the second shell, and the partition are fixedly connected by bolts.

[0006] Furthermore, the first shell is provided with an installation groove, the installation groove faces the second shell, the thickness of the installation groove is equal to the thickness of the partition, and the partition is placed in the installation groove so that the surface of the partition is flush with the surface of the first shell, and the relative surfaces of the first shell and the second shell can fit together.

[0007] Furthermore, the first sealing structure includes a first sealing strip and a first sealing groove, the first sealing groove is arranged in the installation groove, and the length of the first sealing groove is smaller than the length of the installation groove, the first sealing strip is arranged in the first sealing groove, and the first sealing strip is flush with the surface of the first sealing groove.

[0008] Furthermore, the second sealing structure includes a second sealing strip and a second sealing groove, the second sealing groove is opened on the first shell, the second sealing strip is arranged in the second sealing groove, and the second sealing strip is flush with the surface of the second sealing groove.

[0009] Furthermore, a first fixing plate is provided at the outer edge of the first shell, a second fixing plate is provided at the outer edge of the second shell, and a third fixing plate is provided at the outer edge of the partition. The first fixing plate, the third fixing plate and the second fixing plate correspond to each other one by one and are fixedly connected by bolts.

[0010] In summary, the utility model has achieved the following technical effects:

[0011] The utility model fixes two shells and a partition plate by bolts, and embeds the partition plate into one of the shells, so that the two shells fit closely together to prevent air leakage;

[0012] The utility model provides a sealing strip on each of the two shells. The sealing strip is made of rubber material, which not only achieves a sealing effect but also a shock absorbing effect, thereby preventing the bolts from falling off due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of a double-impeller fan volute connection structure provided by an embodiment of the utility model;

[0014] Figure 2 yes Figure 1 Schematic diagram of the decomposition of

[0015] Figure 3 yes Figure 2 The enlarged schematic diagram of part B in the middle;

[0016] Figure 4 yes Figure 1 Enlarged schematic diagram of part A in the middle. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0018] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] Example:

[0024] Figure 1 This is a schematic diagram of the connection structure of the volute of a double-impeller fan. Figure 2 yes Figure 1The exploded schematic diagram includes a first shell 1, a second shell 2, and a partition 3; the side of the first shell 1 is provided with a first sealing structure, the second shell 2 is provided with a second sealing structure, the two sides of the first side surface of the partition 3 are closely attached to the first sealing structure, and the two sides of the second side surface of the partition 3 are closely attached to the second sealing structure; the first shell 1, the second shell 2, and the partition 3 are fixedly connected with bolts.

[0025] The utility model splices two shells together to form a volute with double impellers, and then uses a partition to divide the volute into two spaces to install the impellers respectively, uses bolts to fix the outer edges of the two shells and the partition to form a whole, and sets two sealing structures to prevent internal wind from leaking out and causing the air volume at the air outlet to decrease, and cooperates with the partition to enhance the stability of the connection.

[0026] Figure 3 yes Figure 2 In the enlarged schematic diagram of part B, the first shell 1 is provided with a mounting groove 101, the mounting groove 101 faces the second shell 2, the thickness of the mounting groove 101 is equal to the thickness of the partition 3, and the partition 3 is placed in the mounting groove 101, so that the surface of the partition 3 is flush with the surface of the first shell 1, and the opposite surfaces of the first shell 1 and the second shell 2 can fit together. During installation, the partition is embedded in one of the shells so that the surfaces of the two shells are tightly fitted, which can prevent wind leakage. At the same time, the partition is limited and will not shift, which also ensures the stability of the connection.

[0027] The first sealing structure includes a first sealing strip 5 and a first sealing groove 102. Figure 3 In the embodiment, the first sealing groove 102 is arranged in the installation groove 101, and its length is less than that of the installation groove 101. The first sealing strip 5 is arranged in the first sealing groove 102, and the first sealing strip 5 is flush with the surface of the first sealing groove 102. The first sealing strip 5 is fully embedded in the first sealing groove 102 to ensure that the partition 3, the first shell and the first sealing strip 5 are tightly fitted, and the sealing effect is good.

[0028] The second sealing structure includes a second sealing strip 4 and a second sealing groove 201. The second sealing groove 201 is provided on the first shell 1. The second sealing strip 4 is provided in the second sealing groove 201. The second sealing strip 4 is flush with the surface of the second sealing groove 201. The second sealing strip 4 is fully embedded in the second sealing groove 201 to ensure that the partition 3 is tightly fitted with the first shell and the second sealing strip 4, and the sealing effect is good.

[0029] Figure 4 yes Figure 1 The enlarged schematic diagram of part A in the middle shows the installation positions of the partition 3, the two shells, and the two sealing strips.

[0030] The second sealing strip 4 and the first sealing strip 5 are both made of rubber material, which can achieve both sealing effect and shock absorption effect, thereby preventing the bolts from falling off due to vibration.

[0031] The outer edge of the first housing 1 is provided with a first fixing sheet 103, the outer edge of the second housing 2 is provided with a second fixing sheet 202, the outer edge of the partition 3 is provided with a third fixing sheet 301, the first fixing sheet 103, the third fixing sheet 301, and the second fixing sheet 202 correspond to each other and are fixedly connected by bolts 6. Bolt fixing is convenient and quick, and disassembly and maintenance are convenient.

[0032] A stop bar 203 is disposed at the edge of the second shell 2 , and the thickness of the stop bar 203 is the same as that of the partition plate 3 .

[0033] The utility model is provided with a partition plate and two sealing strips to prevent air leakage and prevent the bolts from falling off, and is easy to use.

[0034] The above description is only a preferred implementation mode of the present invention, and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A double-impeller fan volute connection structure, characterized in that: The invention comprises a first shell (1), a second shell (2) and a partition (3); a first sealing structure is arranged on a side of the first shell (1), a second sealing structure is arranged on a side of the second shell (2), two side edges of a first side surface of the partition (3) are in close contact with the first sealing structure, and two side edges of a second side surface of the partition (3) are in close contact with the second sealing structure; the first shell (1), the second shell (2) and the partition (3) are fixedly connected by bolts.

2. A double-impeller fan volute connection structure according to claim 1, characterized in that: The first shell (1) is provided with a mounting groove (101), the mounting groove (101) faces the second shell (2), the thickness of the mounting groove (101) is equal to the thickness of the partition (3), and the partition (3) is placed in the mounting groove (101) so that the surface of the partition (3) is flush with the surface of the first shell (1), and the opposite surfaces of the first shell (1) and the second shell (2) can fit together.

3. A double-impeller fan volute connection structure according to claim 2, characterized in that: The first sealing structure comprises a first sealing strip (4) and a first sealing groove (102); the first sealing groove (102) is arranged in the mounting groove (101) and has a length smaller than that of the mounting groove (101); the first sealing strip (4) is arranged in the first sealing groove (102), and the first sealing strip (4) is flush with a surface of the first sealing groove (102).

4. A double-impeller fan volute connection structure according to claim 2, characterized in that: The second sealing structure comprises a second sealing strip (5) and a second sealing groove (201); the second sealing groove (201) is provided on the first shell (1); the second sealing strip (5) is arranged in the second sealing groove (201); the second sealing strip (5) is flush with the surface of the second sealing groove (201).

5. A double-impeller fan volute connection structure according to claim 1, characterized in that: The outer edge of the first shell (1) is provided with a first fixing plate (103), the outer edge of the second shell (2) is provided with a second fixing plate (202), and the outer edge of the partition (3) is provided with a third fixing plate (301); the first fixing plate (103), the third fixing plate (301), and the second fixing plate (202) correspond to each other one by one and are fixedly connected by bolts (6).

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