Cooling fan of oxygen generator

Abstract

The utility model discloses an oxygenerator cooling fan, which comprises a shell, a stator assembly and a fan wheel assembly, a hollow cavity, an air inlet and an air outlet are formed in the shell, the hollow cavity is communicated with the outside through the air inlet and the air outlet, the stator assembly is fixedly assembled in the cavity, and the fan wheel assembly is positioned in the cavity and is electromagnetically coupled with the stator assembly; the shell is formed by splicing a first half shell and a second half shell, the edge of the first half shell is provided with a positioning piece, the edge of the second half shell is provided with a positioning structure, the positioning piece comprises a positioning platform and a convex part arranged on the positioning platform, the positioning structure comprises a positioning groove and a positioning wedge block, and the convex part is arranged on the positioning platform. The positioning wedge-shaped block is located beside the positioning groove, and when the convex part is matched with the positioning groove, the positioning wedge-shaped block abuts against the positioning platform. According to the design, the positioning piece is matched with the positioning structure, so that the cooling fan is convenient to assemble, and the matching accuracy of the components of the shell can be improved.

Description

Technical Field

[0001] The utility model relates to the field of electronic and electrical products, in particular to a radiator. Background Art

[0002] Cooling fans are widely used in home appliances, automobiles, security, communications, medical treatment, industrial control, electricity, printing, military industry, welding machines, instruments and meters, computers, power supplies and other fields.

[0003] The cooling fan mainly includes a housing, a stator assembly and a fan wheel assembly. The housing is formed with a hollow cavity, an air inlet and an air outlet connecting the hollow cavity and the outside. The stator assembly is fixedly assembled in the cavity. The fan wheel assembly is rotatably assembled in the cavity and is electromagnetically coupled with the stator assembly.

[0004] The housing is composed of two half housings, or a housing body and a cover plate. The components of the housing need to be accurately matched to form a closed cavity, providing favorable conditions for the flow of the cooling fan airflow. Utility Model Content

[0005] The technical problem solved by the present invention is: how to improve the matching accuracy of components of a cooling fan housing for an oxygen concentrator.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: an oxygen concentrator cooling fan comprises a shell, a stator assembly and a fan wheel assembly, the shell is formed with a hollow cavity, an air inlet and an air outlet connected to the hollow cavity and the outside, the stator assembly is fixedly assembled in the cavity, the fan wheel assembly is located in the cavity and is electromagnetically coupled with the stator assembly; the shell is composed of a first half shell and a second half shell, a positioning piece is provided at the edge of the first half shell, and a positioning structure is provided at the edge of the second half shell, the positioning piece comprises a positioning platform, and a convex portion arranged on the positioning platform, the positioning structure comprises a positioning groove, and a positioning wedge block, the positioning wedge block is located beside the positioning groove, and when the convex portion cooperates with the positioning groove, the positioning wedge block abuts against the positioning platform.

[0007] The first half shell is provided with a first connecting ear, the second half shell is provided with a second connecting ear, and the first connecting ear is connected to the second connecting ear through a connecting piece.

[0008] The first half shell and the second half shell are assembled together, the positioning member cooperates with the positioning structure, the protrusion cooperates with the positioning groove, and the positioning wedge block abuts against the positioning platform, so that the first half shell and the second half shell can be assembled together accurately. Afterwards, the first connecting ear and the second connecting ear are connected with a threaded connector to fix the first half shell and the second half shell to form a shell.

[0009] The cooperation between the positioning member and the positioning structure of the present invention not only facilitates the assembly of the heat dissipation fan, but also can improve the accuracy of the cooperation between the shell components (the first half shell and the second half shell).

[0010] The positioning structure includes two positioning wedge blocks, which are located on the left and right sides of the positioning groove. When the first connecting ear and the second connecting ear are connected by a threaded connector, the pressure between the first half shell and the second half shell increases during the process of tightening the threaded connector. At the same time, the pressure between the positioning wedge block and the positioning platform increases, and the pressure between the convex part and the groove increases, so that the first half shell and the second half shell fit tightly together. The wedge structure of the positioning wedge block has sufficient strength to withstand the pressure between the positioning wedge block and the positioning platform.

[0011] The periphery of the positioning platform is provided with a limiting edge, and the end of the positioning wedge block can abut against the limiting edge. When the positioning wedge block abuts against the positioning platform, its end abuts against the limiting edge, which can improve the accuracy of the first half shell and the second half shell matching. In addition, when the operator tightens the threaded connector, the first half shell and the second half shell are squeezed together, and the edges of the first half shell and the second half shell may deform outwardly. The positioning wedge block abuts against the limiting edge, which can limit such outward deformation.

[0012] The shape of the convex part is a semi-cylinder. This structure facilitates the operator to translate the first half shell and the second half shell along the matching surface and fine-tune the matching between the first half shell and the second half shell. After the shell is assembled, the operator can fill the positioning groove with sealant.

[0013] There are a number of positioning members, which are distributed along the circumference of the first half shell, and the number of positioning structures is equal to the number of positioning members. When assembling the shell, the positioning members and the positioning structures are matched in a one-to-one manner.

[0014] The stator assembly is fixedly assembled on the first half shell, and an annular reinforcement rib and a spoke-shaped reinforcement rib are arranged on the first half shell, and the annular reinforcement rib is connected with the spoke-shaped reinforcement rib.

[0015] The first half shell is provided with a wire hole and a wire slot connected to the wire hole, and a wire stopper is provided in the wire slot. The wire connected to the positioning assembly passes through the wire hole and is introduced into the wire slot. The wire stopper includes a first stopper and a second stopper, the first stopper spans across the wire slot, and there is a gap between the second stopper and the side wall of the wire slot for the wire to pass through. During actual installation, the wire is connected to an external device / device, and the operator can adaptively adjust the position of the wire according to the connection situation so that the wire is thrown to one side of the second stopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the cooling fan of the oxygen concentrator;

[0018] Figure 2 This is a schematic diagram of the oxygen concentrator cooling fan from another perspective;

[0019] Figure 3 for Figure 1 A top view of

[0020] Figure 4 for Figure 1 A local enlarged view of point A;

[0021] Figure 5 is a schematic diagram of the second half shell 20.

[0022] Explanation of symbols in the figure:

[0023] 101. air inlet; 102. air outlet;

[0024] 10. first half shell; 11. positioning member; 12. positioning platform; 13. convex portion; 14. limiting edge; 15. first connecting ear; 16. annular reinforcing rib; 17. spoke-shaped reinforcing rib; 18. wire groove; 181. first limiting member; 182. second limiting member;

[0025] 20. Second half shell; 21. Positioning structure; 22. Positioning groove; 23. Positioning wedge block; 25. Second connecting ear;

[0026] 30. Decorative cover. DETAILED DESCRIPTION

[0027] Combination Figure 1 , Figure 4 , Figure 5 The oxygen concentrator cooling fan comprises a shell, a stator assembly and a fan wheel assembly. The shell is formed with a hollow cavity, an air inlet 101 and an air outlet 102 communicating with the hollow cavity and the outside. The stator assembly is fixedly assembled in the cavity. The fan wheel assembly is located in the cavity and is electromagnetically coupled with the stator assembly. The shell is composed of a first half shell 10 and a second half shell 20. A positioning member 11 is provided at the edge of the first half shell, and a positioning structure 21 is provided at the edge of the second half shell. The positioning member comprises a positioning platform 12 and a convex portion 13 arranged on the positioning platform. The positioning structure comprises a positioning groove 22 and a positioning wedge block 23. The positioning wedge block is located beside the positioning groove. When the convex portion cooperates with the positioning groove, the positioning wedge block abuts against the positioning platform.

[0028] The first half shell 10 is provided with a first connecting ear 15, and the second half shell 20 is provided with a second connecting ear 25, and the first connecting ear is connected to the second connecting ear via a connecting piece.

[0029] The first half shell 10 and the second half shell 20 are assembled together, the positioning member 11 cooperates with the positioning structure 21, the protrusion 13 cooperates with the positioning groove 22, and the positioning wedge block 23 abuts against the positioning platform 12, so that the first half shell 10 and the second half shell 20 can be assembled accurately. Afterwards, the first connecting ear 15 and the second connecting ear 25 are connected by a threaded connector to fix the first half shell and the second half shell to form a shell.

[0030] like Figure 5 The positioning structure 21 includes two positioning wedge blocks 23, which are located on the left and right sides of the positioning groove 22. When the first connecting ear 15 and the second connecting ear 25 are connected by a threaded connector, the pressure between the first half shell 10 and the second half shell 20 increases during the process of tightening the threaded connector. At the same time, the pressure between the positioning wedge block 23 and the positioning platform 12 increases, and the pressure between the protrusion 13 and the positioning groove 22 increases. In this way, the first half shell 10 and the second half shell 20 are tightly matched together. Among them, the wedge structure of the positioning wedge block 23 has sufficient strength to withstand the pressure between the positioning wedge block 23 and the positioning platform 12.

[0031] like Figure 4 The periphery of the positioning platform 12 is provided with a limiting edge 14, and the end of the positioning wedge block 23 can abut against the limiting edge. When the positioning wedge block 23 abuts against the positioning platform 12, its end abuts against the limiting edge 14, which can improve the accuracy of the matching between the first half shell 10 and the second half shell 20. In addition, when the operator tightens the threaded connector, the first half shell 10 and the second half shell 20 are squeezed together, and the edges of the first half shell and the second half shell may deform outwardly. The positioning wedge block 23 abuts against the limiting edge 14, which can limit such outward deformation.

[0032] The shape of the protrusion 13 is a semi-cylinder. This structure facilitates the operator to translate the first half shell 10 or the second half shell 20 along the mating surface, so that the first half shell and the second half shell are translated relative to the mating surface, and then fine-tune the fit between the first half shell and the second half shell. After the shell assembly is completed, the operator can fill the positioning groove 22 with sealant.

[0033] like Figure 3 There are a number of positioning members 11, which are distributed along the circumference of the first half shell 10, and the number of positioning structures 21 is equal to the number of positioning members. When assembling the shell, the positioning members 11 and the positioning structures 21 are matched in a one-to-one manner.

[0034] like Figure 2 The stator assembly is fixedly assembled on the first half shell 10, and an annular reinforcement rib 16 and a spoke-shaped reinforcement rib 17 are provided on the first half shell, and the annular reinforcement rib is connected to the spoke-shaped reinforcement rib.

[0035] The first half shell 10 is provided with a wire hole and a wire groove 18 connected to the wire hole, and a wire stopper is provided in the wire groove. The wire connected to the positioning assembly passes through the wire hole and is introduced into the wire groove 18. The wire stopper includes a first stopper 181 and a second stopper 182. The first stopper spans across the wire groove 18, and there is a gap between the second stopper and the side wall of the wire groove for the wire to pass through. During actual installation, the wire is connected to an external device / device, and the operator can adaptively adjust the position of the wire according to the connection situation so that the wire is directed to one side of the second stopper 182.

[0036] The above contents are only preferred implementation modes of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation mode and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. An oxygen concentrator cooling fan, comprising a housing, a stator assembly and a fan wheel assembly, wherein the housing is formed with a hollow cavity, an air inlet (101) and an air outlet (102) communicating with the hollow cavity and the outside, the stator assembly is fixedly assembled in the cavity, the fan wheel assembly is located in the cavity and is electromagnetically coupled with the stator assembly; the housing is composed of a first half housing (10) and a second half housing (20), and is characterized in that: A positioning piece (11) is provided on the edge of the first half shell, and a positioning structure (21) is provided on the edge of the second half shell. The positioning piece includes a positioning platform (12) and a convex portion (13) arranged on the positioning platform. The positioning structure includes a positioning groove (22) and a positioning wedge block (23). The positioning wedge block is located beside the positioning groove. When the convex portion cooperates with the positioning groove, the positioning wedge block abuts against the positioning platform.

2. The oxygen concentrator cooling fan according to claim 1, characterized in that: The positioning structure (21) comprises two positioning wedge blocks (23), and the two positioning wedge blocks are located on the left and right sides of the positioning groove (22).

3. The oxygen concentrator cooling fan according to claim 1, characterized in that: A limiting edge (14) is provided on the periphery of the positioning platform (12), and the end of the positioning wedge block (23) can abut against the limiting edge.

4. The oxygen concentrator cooling fan according to claim 1, characterized in that: The convex part (13) is in the shape of a semi-cylinder.

5. The oxygen concentrator cooling fan according to claim 1, characterized in that: There are a number of positioning members (11), which are distributed along the circumference of the first half shell (10), and the number of positioning structures (21) is equal to the number of positioning members.

6. The oxygen concentrator cooling fan according to claim 1, characterized in that: The first half shell (10) is provided with a first connecting ear (15), and the second half shell (20) is provided with a second connecting ear (25), and the first connecting ear and the second connecting ear are connected via a connecting piece.

7. The oxygen concentrator cooling fan according to claim 1, characterized in that: The stator assembly is fixedly assembled on the first half shell (10), and the first half shell is provided with an annular reinforcement rib (16) and a spoke-shaped reinforcement rib (17), and the annular reinforcement rib is connected to the spoke-shaped reinforcement rib.

8. The oxygen concentrator cooling fan according to claim 7, characterized in that: The first half shell (10) is provided with a wire passing hole and a wire passing groove (18) communicated with the wire passing hole, wherein a wire limiting member is provided in the wire passing groove.

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