A transformer with a heat dissipation module

Abstract

The application discloses a transformer with a heat dissipation module, the transformer comprising a transformer body and a heat dissipation module, the heat dissipation module comprising a heat dissipation fin and a cross-flow fan, the cross-flow fan comprising a shell and a cross-flow impeller, the cross-flow impeller comprising an end disc (1), a blade (2) and an intermediate ring (3), the intermediate ring being provided with an inner hole (31) and an outer periphery, characterized in that a first groove (32) is arranged in the circumferential direction of the inner hole, a plurality of the first grooves are uniformly distributed in the circumferential direction, a protrusion (33) is arranged between adjacent first grooves, a plurality of the protrusions are uniformly distributed in the circumferential direction, a second groove (34) is arranged in the circumferential direction of the outer periphery, and a plurality of the second grooves are uniformly distributed in the circumferential direction. The application can reduce the eddy current at both ends of the blade of the cross-flow impeller, thereby stabilizing / increasing the air volume and air pressure of the cross-flow fan and improving the heat dissipation effect of the transformer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformer, dry-type transformer, and particularly relates to a transformer with a heat dissipation module. BACKGROUND

[0002] The heat dissipation mode of the dry-type transformer usually includes natural heat dissipation and forced heat dissipation, and the forced heat dissipation usually adopts a heat dissipation fan (cross-flow fan, axial flow fan) for heat dissipation. Figure 1 As shown in the figure, the existing transformer with a heat dissipation module includes a transformer body and a heat dissipation module, and the heat dissipation module includes heat dissipation fins and a cross-flow fan, and the cross-flow fan includes a shell and a cross-flow impeller, and the cross-flow impeller includes an end disc 1, a blade 2, and an intermediate ring 3, the end disc is arranged at both side ends of the impeller, a plurality of blades are distributed in the circumferential direction, and one or more intermediate rings are connected between adjacent blade segments in the axial direction, and the intermediate ring 3 has an inner hole 31 and an outer periphery, and the blade is arranged between the inner hole and the outer periphery. However, the existing cross-flow fan has the problem of large vortex at both ends of the blade, thereby reducing the air volume and air pressure. SUMMARY

[0003] The purpose of the present application is to overcome the deficiencies in the prior art, and to provide a transformer with a heat dissipation module, which can reduce the vortex at both ends of the blade of the cross-flow impeller through the design of the first groove and the second groove, thereby stabilizing / increasing the air volume and air pressure of the cross-flow fan and improving the heat dissipation effect of the transformer.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0005] A transformer with a heat dissipation module, the transformer includes a transformer body and a heat dissipation module, and the heat dissipation module includes heat dissipation fins and a cross-flow fan, and the cross-flow fan includes a shell and a cross-flow impeller, and the cross-flow impeller includes an end disc (1), a blade (2), and an intermediate ring (3), the end disc is arranged at both side ends of the impeller, a plurality of blades are distributed in the circumferential direction, and one or more intermediate rings are connected between adjacent blade segments in the axial direction, and the intermediate ring (3) has an inner hole (31) and an outer periphery, and the blade is arranged between the inner hole and the outer periphery, characterized in that: the inner hole (31) is provided with a first groove (32) in the circumferential direction, a plurality of first grooves are uniformly distributed in the circumferential direction, a protrusion (33) is arranged between adjacent first grooves, a plurality of protrusions are uniformly distributed in the circumferential direction, and the outer periphery is provided with a second groove (34) in the circumferential direction, and a plurality of second grooves are uniformly distributed in the circumferential direction.

[0006] Further, the number of the first grooves (32), the second grooves (34), and the blades (2) is equal, and in the circumferential direction, the radial inner end position of the blade corresponds to the position of the first groove, and the second groove is located between the adjacent two blades.

[0007] Further, the cross-flow impeller has a rotation axis (O), the rotation axis (O), the bottom midpoint of the first groove (32) and the left sidewall of the second groove (34) are substantially located on the same line.

[0008] Further, the same line is tangent to the convex arc surface of the arc blade (2).

[0009] Further, the axial thickness (H) of the protrusion (33) gradually increases from the radial inner side to the radial outer side.

[0010] Further, the protrusion (33) has a circumferential width b1, the first groove (32) has a circumferential width b2, and the second groove (34) has a circumferential width b3, b1=(0.4-0.55)b2, and b3=(0.5-0.65)b2.

[0011] Further, the first groove (32) has a radial depth a1, and the second groove (34) has a radial depth a2, a1=(1.5-2.3)a2, and a1=(0.4-0.55)b2.

[0012] The transformer with the heat dissipation module can reduce the eddy current at both ends of the blade of the cross-flow impeller, thereby stabilizing / increasing the air volume and air pressure of the cross-flow fan and improving the heat dissipation effect of the transformer. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic diagram of the heat dissipation fan structure of the prior art transformer.

[0014] Figure 2 It is a schematic diagram of the heat dissipation fan structure of the transformer of the present application.

[0015] Figure 3 It is a schematic diagram of the heat dissipation fan structure of the transformer of the present application.

[0016] Figure 4 It is a schematic diagram of the protrusion structure (P-P cross-sectional view) of the present application.

[0017] In the figure: end disc 1, blade 2, intermediate ring 3, inner hole 31, first groove 32, protrusion 33, second groove 34. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] like Figures 1-4 As shown, a transformer with a heat dissipation module is disclosed. The transformer includes a transformer body and a heat dissipation module. The heat dissipation module includes heat sinks and a crossflow fan. The crossflow fan includes a housing and a crossflow impeller. The crossflow impeller includes an end plate 1, blades 2, and an intermediate ring 3. The end plate 1 is disposed at both ends of the impeller. Multiple blades 2 are distributed circumferentially. In the axial direction, one or more intermediate rings 3 are connected between adjacent blade segments. The intermediate ring 3 has an inner hole 31 and an outer periphery. The blades 2 are disposed between the inner hole 31 and the outer periphery. The transformer is characterized in that: a first groove 32 is provided circumferentially in the inner hole 31, and multiple first grooves 32 are evenly distributed circumferentially. A protrusion 33 is provided between adjacent first grooves 32, and multiple protrusions 33 are evenly distributed circumferentially. A second groove 34 is provided circumferentially in the outer periphery, and multiple second grooves 34 are evenly distributed circumferentially.

[0021] Furthermore, the number of the first groove 32, the second groove 34, and the blades 2 are equal. In the circumferential direction, the radial inner end position of the blade 2 is set corresponding to the position of the first groove 32, and the second groove 34 is located between two adjacent blades 2.

[0022] The present invention discloses a transformer with a heat dissipation module, which, through the design of the first groove 32 and the second groove 34, can reduce the eddy currents at both ends of the blades 2 of the crossflow impeller, thereby stabilizing / increasing the air volume and air pressure of the crossflow fan and improving the heat dissipation effect of the transformer.

[0023] Furthermore, the crossflow impeller has a rotation axis O, the bottom midpoint of the first groove 32, and the left side wall of the second groove 34, which are approximately on the same straight line, such as... Figure 3 As shown.

[0024] Furthermore, this same straight line is tangent to the convex arc surface of the arc-shaped blade 2, such as... Figure 3 As shown.

[0025] Furthermore, from the radially inner side to the radially outer side, the axial thickness H of the protrusion 33 gradually increases, as... Figure 4The present application can further reduce vortexes at both ends of the blade 2 of the cross-flow impeller by gradually increasing the axial thickness H of the protrusion 33, thereby stabilizing / increasing the air volume and air pressure of the cross-flow fan and improving the heat dissipation effect of the transformer.

[0026] Further, the protrusion 33 has a circumferential width b1, the first groove 32 has a circumferential width b2, and the second groove 34 has a circumferential width b3, b1=(0.43-0.53)b2, preferably 0.48; and b3=(0.53-0.63)b2, preferably 0.58.

[0027] Further, the first groove 32 has a radial depth a1, and the second groove 34 has a radial depth a2, a1=(1.5-2.3)a2, preferably 1.9; and a1=(0.43-0.53)b2, preferably 0.48.

[0028] The transformer with the heat dissipation module of the present application can further reduce vortexes at both ends of the blade 2 of the cross-flow impeller by the design of the specific parameters of the first groove 32 and the second groove 34, thereby better stabilizing / increasing the air volume and air pressure of the cross-flow fan and improving the heat dissipation effect of the transformer.

[0029] The transformer with the heat dissipation module of the present application can reduce vortexes at both ends of the blade 2 of the cross-flow impeller by the design of the first groove 32 and the second groove 34, thereby stabilizing / increasing the air volume and air pressure of the cross-flow fan and improving the heat dissipation effect of the transformer.

[0030] The above embodiments are illustrative of the present application, not a limitation of the present application. It can be understood that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the protection scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A transformer with a heat dissipation module, the transformer including a transformer body and a heat dissipation module, the heat dissipation module including heat sink and crossflow fan, the crossflow fan including a shell and a crossflow impeller, the crossflow impeller including an end plate (1), blades (2) and an intermediate ring (3), the end plate being disposed at both ends of the impeller, multiple blades being distributed circumferentially, and in the axial direction, one or more intermediate rings being connected between adjacent blade segments, the intermediate ring (3) having an inner hole (31) and an outer periphery, the blades being disposed between the inner hole and the outer periphery; Its features are: The inner hole (31) is provided with a first groove (32) in the circumferential direction, and multiple first grooves are evenly distributed in the circumferential direction. A protrusion (33) is provided between adjacent first grooves, and multiple protrusions are evenly distributed in the circumferential direction. A second groove (34) is provided in the circumferential direction on the outer periphery, and multiple second grooves are evenly distributed in the circumferential direction. The number of the first groove (32), the second groove (34), and the blade (2) are equal. In the circumferential direction, the radial inner end of the blade is set to correspond to the position of the first groove, and the second groove is located between two adjacent blades. The cross-flow impeller has a rotating shaft (O), the rotating shaft, the bottom midpoint of the first groove (32), and the left side wall of the second groove (34) are roughly on the same straight line; the same straight line is tangent to the convex arc surface of the arc blade (2).

2. A transformer with a heat dissipation module as described in claim 1, characterized in that, From the radial inner side to the radial outer side, the axial thickness (H) of the protrusion (33) gradually increases.

3. A transformer with a heat dissipation module as described in claim 2, characterized in that, The protrusion (33) has a circumferential width b1, the first groove (32) has a circumferential width b2, and the second groove (34) has a circumferential width b3, b1 = (0.4-0.55)b2, b3 = (0.5-0.65)b2.

4. A transformer with a heat dissipation module as described in claim 3, characterized in that, The first groove (32) has a radial depth a1, and the second groove (34) has a radial depth a2, a1=(1.5-2.3)a2, a1=(0.4-0.55)b2.

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