CN211507247U - Super-power resistor convenient for convection type heat dissipation - Google Patents
Super-power resistor convenient for convection type heat dissipation Download PDFInfo
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- CN211507247U CN211507247U CN202020442737.XU CN202020442737U CN211507247U CN 211507247 U CN211507247 U CN 211507247U CN 202020442737 U CN202020442737 U CN 202020442737U CN 211507247 U CN211507247 U CN 211507247U
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- resistance wire
- heat dissipation
- ceramic tube
- screw rod
- power resistor
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Abstract
The utility model relates to an ultra-high power resistor convenient for convection type heat dissipation, which comprises a resistance wire, a ceramic tube and a screw rod; the resistance wire is wound in a flat long elliptic shape to be in a vertically symmetrical wavy shape, the longitudinal section of the resistance wire is in a laminated petal shape, a through hole is formed in the middle of the resistance wire, a ceramic tube penetrates into the through hole, and a fixed interval is kept between every two circles of the resistance wire; the screw rod penetrates into the ceramic tube; and two ends of the resistance wire are respectively connected with a connecting terminal. Because a certain distance is kept between every circle of resistance wire, the air convection space is increased by fully utilizing the hollow gap between the resistance wires, the sufficient heat radiation airflow space is realized around the resistance wires, the barrier space is reduced, the air convection heat dissipation is convenient, the very high-efficiency heat dissipation effect is achieved, and the requirement of ultrahigh power of the single resistor is met.
Description
Technical Field
The utility model relates to an electrical device technical field, especially a be convenient for to radiating super large power resistor of STREAMING.
Background
At present, resistance wires in most of high-power load cabinets for testing are wound by adhering the resistance wires to the surface of a high-temperature-resistant medium, and the power consumption of the resistance wires is usually energy conversion in a heat radiation mode, so that the poor heat dissipation problem of the high-power resistor is usually restricted in the direction of manufacturing the high-power resistor to ultra-high power.
Adopt the structure of resistance wire direct winding on high temperature resistant medium surface, its defect is that the resistance wire wraps the together with the medium surface is complete, and high temperature resistant medium is mostly insulating material again, is unfavorable for heat-conduction, causes the contact surface temperature high, and the radiating effect is not good, causes the oxidation and fusing to appear after long-time work extremely easily.
The resistors are small in single power, and when a high-power load cabinet needs to be manufactured, a large number of resistors with the structure need to be connected in series and in parallel, and in order to solve the heat dissipation problem, a large enough air convection gap needs to be reserved in the cabinet, so that the load cabinet is large in size, and the manufacturing cost is high.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model aims at providing a be convenient for to radiating super large power resistor of STREAMING promotes the radiating efficiency.
The embodiment of the utility model provides an in adopt following scheme to realize: the ultra-high power resistor convenient for convection type heat dissipation is provided, and comprises a resistance wire, a ceramic tube and a screw rod; the resistance wire is wound in a flat long elliptic shape to be in a vertically symmetrical wavy shape, the longitudinal section of the resistance wire is in a laminated petal shape, a circular through hole is formed in the middle of the resistance wire, a ceramic tube penetrates into the through hole, and a fixed interval is kept between every two circles of the resistance wire; the screw rod penetrates into the ceramic tube; and two ends of the resistance wire are respectively connected with a connecting terminal.
In one embodiment of the utility model, the two ends of the screw rod are respectively provided with an insulating plate and locked with a locking nut; springs are arranged at the left part and the right part of the screw rod between the ceramic tube and the insulating plate in a penetrating mode.
The utility model discloses an in the embodiment, binding post fixes on the insulation board, binding post is located the part in the insulation board outside is worn to be equipped with first nut, second nut respectively from interior to exterior.
In an embodiment of the present invention, each turn of the resistance wire contacts with a surface point tangent plane of the ceramic tube.
The utility model has the advantages that: the utility model provides a super large power resistor convenient to it is radiating to STREAMING, because all keep certain distance between every circle of resistance wire, so cavity clearance between the make full use of resistance wire has increased the air convection space, realizes sufficient thermal radiation air current space around the resistance wire, has reduced the obstacle space, and the air convection who is convenient for dispels the heat, has reached very efficient radiating effect, realizes that the monomer resistor satisfies super powerful requirement. The middle of the ceramic tube penetrates through a whole screw to form a support for the whole ceramic tube, so that the ceramic tube is not broken due to local stress, and the electrical potential safety hazard caused by the sagging of the assembly is avoided. The single body formed by the special winding process has the advantages of high power, small volume, good heat dissipation effect, light weight and more reliable performance.
Drawings
Fig. 1 is a schematic diagram of a super-power resistor structure for facilitating convective heat dissipation.
Fig. 2 is a schematic cross-sectional view of a super high power resistor that facilitates convective heat dissipation.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 to 2, the present invention provides a super high power resistor convenient for convection heat dissipation, which includes a resistance wire 1, a ceramic tube 2, and a screw rod 5; the resistance wire 1 is wound in a flat long ellipse shape to be in a vertically symmetrical wavy shape, the longitudinal section of the resistance wire is in a laminated petal shape (namely the shape formed by the flat long ellipse rotating around the center of the ellipse by a fixed angle every time), a through hole 10 is formed in the middle, a ceramic tube 2 is inserted into the through hole 10, and a fixed interval is kept between every two circles of the resistance wire 1; the screw 5 penetrates into the ceramic tube 2; two ends of the resistance wire 1 are respectively connected with a connecting terminal 8; the preferred terminal 8 may be a screw terminal; preferably, the resistance wire 1 can be a nichrome wire, and according to the characteristics of the resistance wire, the resistance wire can ensure that the resistance wire is not easy to deform and oxidize under high temperature, and cannot become brittle and deform after being cooled down after long-term use, and has long service life.
In an embodiment of the present invention, the screw rod 5 supports the whole ceramic tube 2, so that the ceramic tube 2 is not broken due to local stress.
Referring to fig. 1, in an embodiment of the present invention, insulation plates 9 are respectively inserted through two ends of the screw rod 5, and a locking nut 4 is locked to lock and fix the insulation plates 9, preferably, a steel nut is used; and springs 3 are arranged at the left part and the right part of the screw rod 5 between the ceramic tube 2 and the insulating plate 9 in a penetrating way.
Referring to fig. 1, in an embodiment of the present invention, the connection terminal 8 is fixed on the insulation board 9, and a first nut 6 and a second nut 7 are respectively inserted into a portion of the connection terminal 8 located outside the insulation board 9 from inside to outside; the resistance wire 1 both ends head of preferred adopts the crimping and brazing mode again to be connected with threaded binding post 8, and first nut 6 is used for the installation of resistance wire 1 to be fixed, and second nut 7 is used for resistance wire 1 and big cable electrical apparatus to be connected, and first nut 6 and the second nut 7 of preferred can adopt the copper nut.
Referring to fig. 1 and 2, in an embodiment of the present invention, each circle of the resistance wire 1 contacts with a surface point and a tangent plane of the ceramic tube 2, so that the body of the resistance wire 1 is completely exposed in the air, and a sufficient thermal radiation airflow space is realized around the resistance wire 1, thereby reducing an obstacle space, facilitating air convection heat dissipation, and achieving a very efficient heat dissipation effect.
The utility model discloses the theory of operation below has:
the resistance wire adopts a flat long ellipse winding method, so that the cross section forms a petal shape, the whole resistance wire forms a wave shape, a certain distance is kept between every two circles of resistance wires, every circle of the resistance wires is in contact with the surface point tangent plane of the ceramic tube, so that the resistance wire body is completely exposed in the air, and the air convection space is increased by fully utilizing the hollow gap between the resistance wires, so that the resistance wire is surrounded by sufficient heat radiation airflow space, the obstacle space is reduced, and the air convection heat dissipation is facilitated.
The above description is only for the preferred embodiment of the present invention, and should not be interpreted as limiting the scope of the present invention, which is intended to cover all the equivalent changes and modifications made in accordance with the claims of the present invention.
Claims (4)
1. The utility model provides a super high power resistor convenient to STREAMING heat dissipation which characterized in that: comprises a resistance wire, a ceramic tube and a screw rod; the resistance wire is wound in a flat long elliptic shape to be in a vertically symmetrical wavy shape, the longitudinal section of the resistance wire is in a laminated petal shape, a circular through hole is formed in the middle of the resistance wire, a ceramic tube penetrates into the through hole, and a fixed interval is kept between every two circles of the resistance wire; the screw rod penetrates into the ceramic tube; and two ends of the resistance wire are respectively connected with a connecting terminal.
2. A very high power resistor for facilitating convective heat dissipation in accordance with claim 1, wherein: the two ends of the screw rod are respectively provided with an insulating plate in a penetrating way, and a locking nut is locked; springs are arranged at the left part and the right part of the screw rod between the ceramic tube and the insulating plate in a penetrating mode.
3. A very high power resistor for facilitating convective heat dissipation in accordance with claim 2, wherein: the wiring terminal is fixed on the insulating plate, and a first nut and a second nut are respectively arranged on the part, located on the outer side of the insulating plate, of the wiring terminal in a penetrating mode from inside to outside.
4. A very high power resistor for facilitating convective heat dissipation in accordance with claim 1, wherein: each circle of the resistance wire is in contact with the surface point tangent plane of the ceramic tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020442737.XU CN211507247U (en) | 2020-03-31 | 2020-03-31 | Super-power resistor convenient for convection type heat dissipation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020442737.XU CN211507247U (en) | 2020-03-31 | 2020-03-31 | Super-power resistor convenient for convection type heat dissipation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211507247U true CN211507247U (en) | 2020-09-15 |
Family
ID=72403419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020442737.XU Active CN211507247U (en) | 2020-03-31 | 2020-03-31 | Super-power resistor convenient for convection type heat dissipation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211507247U (en) |
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2020
- 2020-03-31 CN CN202020442737.XU patent/CN211507247U/en active Active
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