Load unit with high-performance heat dissipation

Abstract

The invention relates to the technical field of resistors, in particular to a high-performance heat dissipation load unit which comprises an air duct, a motor fixed to the air duct, a rotating shaft installed on an output shaft of the motor, a supporting disc fixed to the rotating shaft and a plurality of supporting fan blades fixed to the supporting disc in a spaced mode in the circumferential direction. The air duct is provided with an external liquid groove, and the outer end part of each supporting fan blade is provided with an external leading-out terminal inserted into the external liquid groove; the air duct is provided with an internal liquid receiving groove; an inner leading-out terminal inserted into the inner liquid receiving groove is arranged at the inner end part of each supporting fan blade; the supporting fan blades are insulators, and the two ends of the resistance wire of each supporting fan blade are connected with the outer leading-out terminal and the inner leading-out terminal of the corresponding supporting fan blade respectively, so that the resistance wires are electrically conducted through the conductive liquid. Compared with an existing load, the heat dissipation effect is good, the wind resistance is low, and the requirement for a draught fan is lowered. Whether the group of resistance wires are used or not can be adjusted by changing whether the external leading-out terminals are immersed into the conductive liquid in the external liquid tank or not, so that the power of the whole resistor unit can be adjusted.

Description

Technical Field

[0001] The invention relates to the field of resistor technology, and in particular to a load unit with high performance heat dissipation. Background Art

[0002] The power consumption of the resistor element in the resistor is generally large, and a large amount of heat is generated during operation, so a heat dissipation mechanism is needed to assist in dissipating the heat. There are generally two types of existing heat dissipation mechanisms, one of which is air cooling, that is, using a fan to blow air toward the resistor element to dissipate the heat generated by the resistor element into the air. In order to meet different heat dissipation performance requirements, the traditional approach is to select fans with different air volumes through calculations, according to the law of conservation of energy: the energy generated by the resistor element = the energy absorbed by the resistor body + the heat taken away by the air. According to this law, a fan with appropriate air volume can be selected to meet the actual heat dissipation effect. However, the cost of the fan increases with the increase of the fan power, and a high-power fan consumes a lot of electricity. The other is water cooling, that is, water pipes are set around the electronic components, and the water circulating inside the water pipes takes away the heat.

[0003] For example, a Chinese patent document with the announcement number CN107301908B discloses a resistor with air-cooling and water-cooling coupling heat dissipation, including a resistor box and a plurality of parallel resistor tubes arranged in the resistor box, the resistor tube includes a sleeve and a resistor wire inserted in the sleeve, the resistor wire and the sleeve are insulated, the two ends of the resistor tube are inserted outside the resistor box and serve as the connection part of the resistor tube, and the resistor tube and the resistor box are insulated and sealed; the resistor also includes an air-cooling mechanism for blowing air toward the resistor tube and a water-cooling mechanism for spraying water toward the resistor tube inside the resistor box. Compared with the prior art, since the resistor wire that needs to be waterproof is sheathed with a sleeve, the two ends of the resistor tube serve as the connection part and are inserted outside the resistor box, so that the air-cooling mechanism can spray water into the resistor box, and the water is directly sprayed on the resistor tube, and then the air-cooling mechanism is combined with the air-cooling mechanism to blow air to the resistor tube, so as to accelerate the evaporation of water on the surface of the resistor tube and accelerate the removal of the heat generated by the resistor tube, and the heat dissipation effect is better, and there is no need for the traditional perfect water cooling equipment, which greatly reduces the cost.

[0004] With the development of electronic power technology, there are more and more requirements for the use of loads, and the requirements for loads are getting higher and higher, especially in terms of heat dissipation, and there is an increasing pursuit of high-power and small-volume structures. Summary of the invention

[0005] In view of all or part of the above technical problems existing in the prior art, the present invention provides a load unit with high performance heat dissipation.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] Provided is a load unit with high performance heat dissipation, comprising a wind tube, a motor fixed to the wind tube, a rotating shaft installed on the output shaft of the motor, a supporting plate fixed to the rotating shaft, and a plurality of supporting blades fixed to the supporting plate in a circumferentially spaced manner;

[0008] An annular external liquid tank for holding conductive liquid is provided in the wind tube at the outer end portion corresponding to the supporting blade, and an external lead-out terminal inserted into the external liquid tank is provided at the outer end portion of each supporting blade; an internal liquid tank for holding conductive liquid is provided in the wind tube at the inner end portion corresponding to the supporting blade; and an internal lead-out terminal inserted into the internal liquid tank is provided at the inner end portion of each supporting blade;

[0009] The supporting fan blades are insulators, and each supporting fan blade is wound with a resistance wire. The two ends of the resistance wire are respectively connected to the external lead terminal and the internal lead terminal of the supporting fan blade, so that each resistance wire is electrically connected to each other through the conductive liquid; each external lead terminal can move longitudinally to adjust whether it contacts the conductive liquid in the external liquid tank.

[0010] As a further optional solution, the external lead-out terminal is connected to the supporting fan blades via a stud thread, and the external force is used to twist the external lead-out terminal to achieve longitudinal adjustment; or: the external lead-out terminal is an umbrella-shaped telescopic structure; or: the external lead-out terminal is connected to the supporting fan blades by a snap, and the external force moving the lead-out terminal can stop it in two positions.

[0011] As a further optional solution, the rotating shaft is arranged vertically, the supporting plate is arranged horizontally, and the openings of the external liquid tank and the internal liquid tank face upward.

[0012] As a further optional solution, the external liquid tank is in a ring shape, and the internal liquid tank is in a cylindrical shape.

[0013] As a further optional solution, the inner lead terminal is arranged coaxially with the rotating shaft.

[0014] As a further optional solution, the external connection terminal is in the shape of an arc-shaped sheet, and its curvature is the same as the curvature of the side wall of the external liquid tank.

[0015] As a further alternative, the resistance wire is helically wound outside the supporting blade.

[0016] As a further optional solution, a heat-conducting adhesive is provided on the outer side of the supporting fan blade to wrap the resistance wire; or the resistance wire is exposed to the air.

[0017] As a further optional solution, the rotating shaft is also fixed with a plurality of auxiliary fan blades, and the auxiliary fan blades are located above the supporting fan blades so as to rotate and blow air toward the supporting fan blades.

[0018] As a further optional solution, the inner lead terminal and / or the outer lead terminal is cylindrical.

[0019] As a further optional solution, it also includes a base frame, the external liquid tank and the internal liquid tank are fixed to the base frame, and the base frame is fixed to the bottom of the wind tube.

[0020] Beneficial effects of the present invention:

[0021] Compared with the existing load, the load unit of the present invention has a high-performance heat dissipation. The resistance wire is wound on the fan blades. When the fan is running, the resistance wire will be driven to rotate, which greatly increases the heat dissipation of the resistance wire and greatly increases the power density of the resistance wire. Compared with the traditional air-cooled load, it basically does not generate wind resistance to the fan, reduces the requirements for the fan, and improves the heat dissipation performance. Furthermore, by changing whether the external lead-out terminal is immersed in the conductive liquid in the external liquid tank, it can be adjusted whether the group of resistance wires is used, thereby adjusting the power of the entire resistance unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a high-performance heat dissipation load unit in an embodiment.

[0023] Figure 2 It is a cross-sectional view of a high-performance heat dissipation load unit in an embodiment.

[0024] Figure 3 It is a partial structural schematic diagram of a high-performance heat dissipation load unit in an embodiment.

[0025] Figure 4 Schematic diagram of the structure of the bottom frame, the external liquid tank and the internal liquid tank in the embodiment.

[0026] Reference numerals:

[0027] Air duct 1, motor 2, rotating shaft 3, supporting plate 4, supporting fan blades 5, external liquid tank 6, external lead-out terminal 7, internal liquid tank 8, internal lead-out terminal 9, bottom frame 10. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0029] A high performance heat dissipation load unit of this embodiment, such as Figures 1 to 4As shown, it includes a circular wind tube 1, a motor 2 fixed at the top center of the wind tube 1, a rotating shaft 3 installed on the output shaft of the motor 2, a supporting plate 4 fixed on the rotating shaft 3, and a plurality of supporting blades 5 fixed to the supporting plate 4 in a circumferentially spaced manner. A circular external liquid tank 6 for holding conductive liquid is provided in the wind tube 1 at the outer end corresponding to the supporting blade 5, and an outer lead terminal 7 inserted into the external liquid tank 6 is provided at the outer end of each supporting blade 5; an internal liquid tank 8 for holding conductive liquid is provided in the wind tube 1 at the inner end corresponding to the supporting blade 5; and an inner lead terminal 9 inserted into the inner liquid tank 8 is provided at the inner end of each supporting blade 5. The supporting blade 5 is an insulator made of high-temperature resistant plastic material, and each supporting blade 5 is wound with a resistance wire, and the two ends of the resistance wire are respectively connected to the outer lead terminal 7 and the inner lead terminal 9 of the supporting blade 5, so that each resistance wire is electrically connected in parallel with each other through the conductive liquid.

[0030] Compared with the existing load, the load resistance unit has a resistance wire wound on the supporting blades 5 of the fan. The operation of the fan will drive the resistance wire on the supporting blades 5 to rotate around the rotating shaft 3, which greatly enhances the heat dissipation effect of the resistance wire and greatly increases the power density of the resistance wire. The traditional air-cooled load forms a large wind resistance on the fan, which is not conducive to heat dissipation and has high performance requirements for the fan. The improved structure of this embodiment basically does not generate wind resistance on the fan, reduces the requirements for the fan, and increases the heat dissipation performance.

[0031] Each external lead terminal 7 can move longitudinally to adjust whether it contacts the conductive liquid in the external liquid tank 6. By changing whether the external lead terminal 7 is immersed in the conductive liquid in the external liquid tank 6, whether the group of resistance wires is used can be adjusted, thereby adjusting the power of the entire resistance unit.

[0032] Specifically, it can be implemented as follows: the external lead terminal 7 is connected to the supporting blade 5 via a stud thread, and the external force is used to twist the external lead terminal 7 to achieve longitudinal adjustment. Or: the external lead terminal 7 is an umbrella-shaped telescopic structure, which can be extended or shortened. Or: the external lead terminal 7 is snap-connected with the supporting blade 5 (similar to the snap-connected relationship between the pen cap and the pen body), and the external force moves the lead terminal 7 to make it stop and hold it in two positions, thereby achieving longitudinal adjustment of the external lead terminal 7. Although these matching structures are not shown in the figure, the threaded connection, umbrella-shaped telescopic mechanism and snap connection are all common connection methods in the mechanical field and do not constitute an obstacle to implementation.

[0033] Specifically, the rotating shaft 3 is arranged vertically, the supporting plate 4 is arranged horizontally, the openings of the external liquid tank 6 and the internal liquid tank 8 face upward. The external liquid tank 6 is annular, the internal liquid tank 8 is cylindrical with a closed bottom and an open top, and the internal lead terminal 9 is arranged coaxially with the rotating shaft 3. The internal lead terminal 9 and the external lead terminal 7 are cylindrical.

[0034] In practice, the external terminal can be changed to an arc-shaped sheet, and its curvature is the same as the curvature of the side wall of the external liquid tank 6, so as to increase the contact area and avoid splashing of the conductive liquid to a certain extent. Or the external terminal can be made into a blade shape, with the blade facing the rotation direction of the supporting blade 5.

[0035] In this embodiment, the resistance wire is spirally wound outside the supporting blade 5. A heat-conducting glue is provided outside the supporting blade 5 to wrap the resistance wire; or the resistance wire is exposed to the air.

[0036] In practice, a plurality of auxiliary blades (not shown) may be fixed on the rotating shaft 3. The auxiliary blades are located above the supporting blades 5 so as to rotate and blow air toward the supporting blades 5 to keep the blades dry.

[0037] In this embodiment, a base frame 10 is further included, and the external liquid tank 6 and the internal liquid tank 8 are fixed to the base frame 10, and the base frame 10 is fixed to the bottom of the wind tube 1. During installation, the three are first fixed as a whole and then installed on the wind tube 1.

[0038] In the description of the present invention, it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0039] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A high-performance heat dissipation load unit, characterized by: The invention comprises a wind tube (1), a motor (2) fixed to the wind tube (1), a rotating shaft (3) mounted on the output shaft of the motor (2), a supporting plate (4) fixed to the rotating shaft (3), and a plurality of supporting blades (5) fixed to the supporting plate (4) in a circumferentially spaced manner; An annular external liquid connection tank (6) for containing conductive liquid is provided in the wind tube (1) at the outer end portion corresponding to the supporting blade (5), and an external lead-out terminal (7) inserted into the external liquid connection tank (6) is provided at the outer end portion of each supporting blade (5); an internal liquid connection tank (8) for containing conductive liquid is provided in the wind tube (1) at the inner end portion corresponding to the supporting blade (5); and an internal lead-out terminal (9) inserted into the internal liquid connection tank (8) is provided at the inner end portion of each supporting blade (5); The supporting blade (5) is an insulator, and each supporting blade (5) is wound with a resistance wire, and the two ends of the resistance wire are respectively connected to the external lead terminal (7) and the internal lead terminal (9) of the supporting blade (5), so that each resistance wire is electrically connected to each other via the conductive liquid; each external lead terminal (7) can move longitudinally to adjust whether it contacts the conductive liquid in the external liquid tank (6).

2. A high performance heat dissipation load unit according to claim 1, characterized in that: The external lead-out terminal (7) is connected to the supporting fan blade (5) via a stud thread, and the external lead-out terminal (7) is twisted by external force to achieve longitudinal adjustment; or: the external lead-out terminal (7) is an umbrella-shaped telescopic structure; or: the external lead-out terminal (7) is snap-connected to the supporting fan blade (5), and the external force moves the lead-out terminal (7) to make it stop and hold at two positions.

3. The high performance heat dissipation load unit according to claim 1, characterized in that: The rotating shaft (3) is arranged vertically, the supporting plate (4) is arranged horizontally, and the openings of the external liquid tank (6) and the internal liquid tank (8) face upward; the external liquid tank (6) is in a circular ring shape, and the internal liquid tank (8) is in a cylindrical shape.

4. A high performance heat dissipation load unit according to claim 3, characterized in that: The inner lead terminal (9) is coaxially arranged with the rotating shaft (3).

5. The high performance heat dissipation load unit according to claim 3 is characterized in that: The external connection terminal is in the shape of an arc sheet, and its curvature is the same as the curvature of the side wall of the external liquid tank (6).

6. A high performance heat dissipation load unit according to claim 1, characterized in that: The resistance wire is spirally wound outside the supporting blade (5).

7. A high performance heat dissipation load unit according to claim 1 or 5, characterized in that: The outer side of the supporting fan blade (5) is provided with heat-conducting glue to wrap the resistance wire; or the resistance wire is exposed to the air.

8. The high performance heat dissipation load unit according to claim 1, characterized in that: The rotating shaft (3) is also fixed with a plurality of auxiliary fan blades, which are located above the supporting fan blades (5) so as to rotate and blow air toward the supporting fan blades (5).

9. The high performance heat dissipation load unit according to claim 1, characterized in that: The inner lead terminal (9) and / or the outer lead terminal (7) are cylindrical.

10. A high performance heat dissipation load unit according to claim 1, characterized in that: It also comprises a bottom frame (10), the external liquid tank (6) and the internal liquid tank (8) are fixed to the bottom frame (10), and the bottom frame (10) is fixed to the bottom of the wind tube (1).

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