A high performance load with uniform heat dissipation

Abstract

The present invention relates to the field of load technology, and specifically to a load with high performance and uniform heat dissipation, including a fan, an air collecting hood and a resistor unit, the air collecting hood is provided with an air collecting cavity, the fan is installed at the air inlet of the air collecting cavity, the resistor unit includes a plurality of resistor tubes arranged in parallel, each resistor tube includes an outer tube, a resistor core and two lead terminals, the outer tube stands on the air collecting hood and one end is connected to the air collecting cavity, and the other end of the outer tube is open, the two lead terminals are respectively arranged at the two ends of the outer tube, the resistor core is arranged in the outer tube, and the two ends are respectively connected to the lead terminals at the corresponding ends. The resistor core of the load of the present invention is in each outer tube, each resistor core is relatively independent, the air duct is uniform, and the heat dissipation performance is good; the fan has high use efficiency and good heat dissipation performance; each resistor tube has an independent air duct, and there is no need to set up an additional air duct, the structure is simple, and the cost is low.

Description

Technical Field

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

[0002] When the load cabinet is working, the resistance unit inside the load cabinet will generate heat. In the prior art, a fan is mainly used to blow away the heat of the resistance unit inside the load cabinet, thereby dissipating the heat of the load cabinet.

[0003] The load box usually has the characteristics of beautiful appearance, large capacity, strong stability, low noise, strong durability and long service life. However, in the process of forced air cooling of the load box in the prior art, there are problems such as limited air intake area and poor air intake and exhaust circulation, which makes the heat in the load box unable to be dissipated in time. In the long run, it will lead to accelerated aging of the wiring, increase the maintenance frequency and cost. More importantly, the resistor tubes in the existing load box are arranged in parallel, and the fans on the side blow air radially to the densely arranged resistor tubes, which leads to large differences in the air volume passing through each resistor tube and different heat dissipation degrees, especially the resistor tubes far away from the fan side have poor heat dissipation effect.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0005] In view of the above technical problems existing in the prior art, the present invention provides a high-performance uniform heat dissipation load, which has good heat dissipation effect and a relatively balanced heat dissipation effect of each resistor tube, thereby avoiding the phenomenon of excessive temperature of local resistor tubes.

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

[0007] A load with high performance and uniform heat dissipation is provided, comprising a fan, an air collecting hood and a resistor unit. The air collecting hood is provided with an air collecting cavity, the fan is installed at the air inlet of the air collecting cavity, the resistor unit comprises a plurality of resistor tubes arranged in parallel, each resistor tube comprises an outer tube, a resistor core and two lead terminals, the outer tube stands on the air collecting hood and one end is connected to the air collecting cavity, and the other end of the outer tube is open, the two lead terminals are respectively arranged at the two end portions of the outer tube, the resistor core is arranged in the outer tube, and the two end portions are respectively connected to the lead terminals at the corresponding ends.

[0008] Specifically, a plurality of resistance tubes are evenly distributed on the opposite side of the wind collecting hood away from the fan.

[0009] Specifically, a mounting hole is provided at the bottom of the air collecting cover, and the peripheral side seal of the fan is installed at the mounting hole to blow air into the air collecting cavity.

[0010] Specifically, a plurality of limiting holes are provided on the top of the air collecting hood, and the lower ends of the outer tubes of the plurality of resistor tubes are fixed in different limiting holes.

[0011] Specifically, the load also includes a pull rod and a pressure plate. One end of the pull rod is fixed to the wind collecting cover, and the other end of the pull rod passes through the pressure plate and is screwed with a nut, so that the pressure plate presses the outer tubes of the multiple resistor tubes downward.

[0012] Specifically, the pressing plate is provided with a plurality of transition holes for the lead terminals to pass through, the transition holes and the limiting holes of the wind collecting hood are respectively provided with electrically insulating brackets, and the lead terminals are passed through the brackets, so that the lead terminals are separated and positioned from the wind collecting hood and the pull plate.

[0013] Specifically, the bracket includes a center circle and a connecting strip extending around the center circle, the connecting strip is overlapped and fixed to the side of the limiting hole or the transition hole, and the lead-out terminal passes through the center circle.

[0014] Specifically, the load also includes a support base, and the wind collecting hood and the fan are respectively fixed to the support base.

[0015] Specifically, a lead-in hole is provided on the side of the wind collecting hood, a sealing plug is provided in the lead-in hole, and a middle hole is provided in the sealing plug for the cable to pass through.

[0016] Specifically, the resistor core is spiral-shaped, and there is a gap between the resistor core and the inner wall of the outer tube.

[0017] Beneficial effects of the present invention:

[0018] Compared with the existing loads, the load of the present invention has a high-performance uniform heat dissipation, in which the resistor core is in each outer tube, each resistor core is relatively independent, the air duct is uniform, and the heat dissipation performance is good; the fan has high efficiency and good heat dissipation performance; each resistor tube has an independent air duct, and there is no need to set up an additional air duct, the structure is simple, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of a load with high performance and uniform heat dissipation in an embodiment.

[0020] Figure 2 for Figure 1 Magnified view at A in the middle.

[0021] Figure 3 It is a schematic structural diagram of the wind collecting hood in the embodiment.

[0022] Figure 4 It is a schematic diagram of the structure of a high-performance uniform heat dissipation load in an embodiment, in which a housing of a row of resistor tubes is hidden.

[0023] Figure 5 Schematic diagram of the structure of the bracket in the embodiment.

[0024] Reference numerals:

[0025] Support base 1, fan 2;

[0026] Wind collecting cover 3, limiting hole 31, lead hole 32;

[0027] Resistance unit 4, outer tube 41, resistance core 42, lead terminal 43;

[0028] Tie rod 5, pressing plate 6, transition hole 61;

[0029] Bracket 7, center circle 71, connecting strip 72. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with specific embodiments and drawings.

[0031] The high performance uniform heat dissipation load of this embodiment, such as Figures 1 to 5 As shown, it includes a support base 1, a fan 2, an air collecting hood 3 and a resistor unit 4, and the air collecting hood 3 and the fan 2 are respectively fixed to the support base 1. The air collecting hood 3 is provided with an air collecting cavity, and the fan 2 is installed at the air inlet of the air collecting cavity. The resistor unit 4 includes a plurality of resistor tubes arranged in parallel, each resistor tube includes an outer tube 41, a resistor core 42 and two lead terminals 43. The outer tube 41 stands on the air collecting hood 3 and one end is connected to the air collecting cavity, and the other end of the outer tube 41 is open. The two lead terminals 43 are respectively arranged at the two ends of the outer tube 41. The resistor core 42 is arranged in the outer tube 41, and the two ends are respectively connected to the lead terminals 43 at the corresponding ends. The resistor core 42 is spiral, and there is a gap between the resistor core 42 and the inner wall of the outer tube 41. The outer tube 41 is preferably a metal tube with good thermal conductivity and heat dissipation performance.

[0032] Compared with the existing load, the resistor core 42 of the load of the present invention is in each outer tube 41, each resistor core 42 is relatively independent, the air duct is uniform, and the heat dissipation performance is good; the fan 2 has high use efficiency and good heat dissipation performance; each resistor tube has an independent air duct, and there is no need to set up an additional air duct, the structure is simple, and the cost is low. It is convenient to use the wind hood 3 to disperse the air volume of the fan 2 to each resistor core 42, which is conducive to uniform heat dissipation of the resistor core 42. In addition, the fan 2 and the wind hood 3 are sealed, and the wind can only be discharged from the metal tube through the wind hood 3, which improves the use efficiency of the fan 2. Using multiple outer tubes 41 increases the contact area between the heating element and the air, which also increases the heat dissipation performance.

[0033] In this embodiment, a plurality of resistor tubes are evenly distributed on the opposite side of the wind collecting cover 3 away from the fan 2, specifically, they are densely arranged horizontally and vertically.

[0034] In this embodiment, a mounting hole is provided at the bottom of the wind collecting hood 3, and the peripheral side seal of the fan 2 is installed at the mounting hole to blow air into the wind collecting chamber. A plurality of limiting holes 31 are provided at the top of the wind collecting hood 3, and the lower ends of the outer tubes 41 of the plurality of resistor tubes are fixed in different limiting holes 31. The load also includes a pull rod 5 and a pressure plate 6, one end of the pull rod 5 is fixed to the wind collecting hood 3, and the other end of the pull rod 5 passes through the pressure plate 6 and is screwed with a nut, so that the pressure plate 6 presses the outer tubes 41 of the plurality of resistor tubes downward. The pressure plate 6 is provided with a plurality of transition holes 61 for the lead-out terminals 43 to pass through, and the transition holes 61 and the limiting holes 31 of the wind collecting hood 3 are respectively provided with electrically insulating brackets 7, and the lead-out terminals 43 are passed through the brackets 7, so that the lead-out terminals 43 are separated and positioned from the wind collecting hood 3 and the pull plate. The bracket 7 includes a center circle 71 and a connecting strip 72 extending around the center circle 71 . The connecting strip 72 is overlapped and fixed to the side of the limiting hole 31 or the transition hole 61 , and the lead-out terminal 43 passes through the center circle 71 .

[0035] In this embodiment, a lead hole 32 is provided on the side of the wind collecting cover 3, and a sealing plug is provided in the lead hole 32, and the sealing plug is provided with a middle hole for the cable to pass through. The lead terminals of multiple resistor tubes are connected in series and parallel in the wind collecting cover 3 and then led out through cables.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" 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.

[0037] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A high-performance uniform heat dissipation load, characterized by: It includes a fan, an air collecting hood and a resistor unit. The air collecting hood is provided with an air collecting cavity. The fan is installed at the air inlet of the air collecting cavity. The bottom of the air collecting hood is provided with a mounting hole. The peripheral seal of the fan is installed at the mounting hole to blow air into the air collecting cavity. The resistor unit includes a plurality of resistor tubes arranged in parallel. Each resistor tube includes an outer tube, a resistor core and two lead terminals. The outer tube stands on the air collecting hood and one end is connected to the air collecting cavity. The other end of the outer tube is open for exhausting the air in the air collecting cavity. The two lead terminals are respectively arranged at the two ends of the outer tube. The resistor core is arranged in the outer tube, and the two ends are respectively connected to the lead terminals at the corresponding ends. A plurality of limiting holes are arranged on the top of the wind collecting hood, and the lower ends of the outer tubes of the plurality of resistor tubes are fixed in different limiting holes; the load also includes a pull rod and a pressure plate, one end of the pull rod is fixed to the wind collecting hood, and the other end of the pull rod passes through the pressure plate and is screwed with a nut, so that the pressure plate presses the outer tubes of the plurality of resistor tubes downward; the pressure plate is provided with a plurality of transition holes for the lead-out terminals to pass through, and the transition holes and the limiting holes of the wind collecting hood are respectively provided with electrically insulating brackets, and the lead-out terminals are passed through the brackets, so that the lead-out terminals are separated and positioned from the wind collecting hood and the pressure plate; the bracket includes a center circle and a connecting strip extending around the center circle, the connecting strip is overlapped and fixed to the side of the limiting hole or the transition hole, and the lead-out terminal passes through the center circle.

2. A high-performance uniform heat dissipation load according to claim 1, characterized in that: A plurality of resistance tubes are evenly distributed on the opposite side of the air collecting hood away from the fan.

3. A high performance uniform heat dissipation load according to claim 1, characterized in that: The load also includes a support base, and the wind collecting cover and the fan are respectively fixed on the support base.

4. A high-performance uniform heat dissipation load according to claim 1, characterized in that: A lead-in hole is arranged on the side of the wind collecting cover, a sealing plug is arranged in the lead-in hole, and a middle hole is arranged in the sealing plug for the cable to pass through.

5. A high performance uniform heat dissipation load according to claim 1, characterized in that: The resistor core is spiral-shaped, and there is a gap between the resistor core and the inner wall of the outer tube.

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