A photothermal fitting water-cooled resistance

Abstract

The present application relates to the technical field of resistor, in particular to a kind of water-cooled resistance of photo-thermal agreement, including insulating and light-transmitting support tube, the outside of support tube is equipped with resistance strip, resistance strip can be red after energization and emit light, support tube is worn with inner water-cooled pipe, so that part of light of resistance strip is shot on the surface of inner water-cooled pipe towards inside;Support tube outside is covered with surrounding tube, annular space is enclosed between surrounding tube and support tube, and multiple outer water-cooled pipes are arranged in annular space, each outer water-cooled pipe is arranged along support tube axial direction, so that part of light of resistance strip is shot on the side of outer water-cooled pipe close to support tube;The inner wall of surrounding tube is provided with reflective layer, and gap is left between adjacent two outer water-cooled pipes, so that part of light of resistance strip is shot on the side of outer water-cooled pipe away from support tube via the gap and reflective layer. Utilize resistance strip heat and emit light, and the energy generated by resistance strip is taken away by light-thermal radiation and inner and outer water-cooled pipes.

Description

Technical Field

[0001] This invention relates to the field of resistor technology, and more specifically to a water-cooled resistor with photothermal compatibility. Background Technology

[0002] With the development of power electronics, the requirements for equipment integration are getting higher and higher, and the requirements for resistors are getting higher and higher, requiring higher power density and smaller size. Water-cooled resistors can solve this problem well. Because water-cooled resistors use water as a cooling medium, they have a fast cooling speed, good heat dissipation performance, and a power density that is much greater than that of air-cooled resistors or self-cooled resistors. Therefore, water-cooled resistors are being used more and more widely.

[0003] Existing metal-tube water-cooled resistors typically involve winding a resistance wire around a ceramic tube, with coolant flowing through the tube to dissipate heat. This has little impact on small-diameter resistance wires because the wire is close to the tube at various radial points, allowing heat to be quickly transferred to the tube's sidewalls and carried away by the cooling water. However, for large-diameter resistance strips, heat transfer is faster on the inner side of the strip, while heat on the outer side requires a distance equal to the strip's diameter to reach the tube, resulting in uneven and insufficient heat dissipation. Furthermore, heat from the resistance wire not only transfers inward to the tube but also dissipates outward, affecting the ambient temperature. Existing metal-tube resistors are ill-suited for applications requiring high ambient temperature control and where heat interference is unacceptable. Summary of the Invention

[0004] To address the aforementioned technical problems in existing technologies, this invention provides a photothermal compatible water-cooled resistor.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A photothermal compatible water-cooled resistor is provided, comprising an insulated and light-transmitting support tube, with a resistance strip on the outer side of the support tube. The resistance strip emits a bright red light when energized. An inner water-cooling tube passes through the support tube, allowing some of the light from the resistance strip to shine inwards onto the surface of the inner water-cooling tube. A surrounding tube is fitted around the support tube, forming an annular space between the surrounding tube and the support tube. Multiple outer water-cooling tubes are arranged around this annular space, each arranged axially along the support tube, so that some of the light from the resistance strip shines on the side of the outer water-cooling tube closest to the support tube. A reflective layer is provided on the inner wall of the surrounding tube, and a gap is left between adjacent outer water-cooling tubes, allowing some of the light from the resistance strip to shine through the gap and the reflective layer onto the side of the outer water-cooling tube furthest from the support tube. Both the outer and inner water-cooling tubes are connected to an external water supply mechanism for the flow of cooling water.

[0007] Specifically, the surface of the surrounding pipe is covered with a heat insulation layer.

[0008] Specifically, a light-transmitting tube is also fitted on the outside of the support tube, and the light-transmitting tube and the support tube together surround the resistor strip.

[0009] Specifically, both the support tube and the light-transmitting tube are made of quartz glass.

[0010] Specifically, a sealed and vacuum-evacuated chamber is formed between the light-transmitting tube and the support tube.

[0011] Specifically, the surfaces of the inner and outer water-cooling pipes are coated with a heat-absorbing layer.

[0012] Specifically, the ends of the support pipe, inner water-cooling pipe, outer water-cooling pipe, and surrounding pipe are fixed, and gaps are left between the outer water-cooling pipe, the surrounding pipe, and the support pipe.

[0013] Specifically, multiple external water-cooling pipes are evenly arranged along a circular trajectory.

[0014] Specifically, the resistor strip is spirally wound around the outer surface of the support tube.

[0015] Specifically, the surrounding tube is a metal tube.

[0016] The beneficial effects of this invention are:

[0017] This invention discloses a photothermal integrated water-cooled resistor that utilizes a resistor strip to generate heat and emit light. The energy generated by the resistor strip is dissipated through photothermal radiation and internal and external water-cooling pipes. This resistor features water-electricity separation, with the resistor strip completely isolated from the cooling water circuit, ensuring stable performance. When energized, the resistor strip emits light, exhibiting a high surface load and power density, achieving high power output for the same volume. Because the resistor strip has internal and external water-cooling pipes respectively, heat dissipation is more efficient, significantly reducing heat loss. More importantly, the surface of the external water-cooling pipe is fully utilized; through the gap between the reflective layer and the external water-cooling pipe, photothermal radiation is directed to the outside of the external water-cooling pipe, ensuring relatively uniform and timely heat dissipation even for resistor strips with a large diameter. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of a photothermal-coupled water-cooled resistor in one of the embodiments.

[0019] Figure 2 This is a partial light diagram of a photothermal-coupled water-cooled resistor in one of the embodiments.

[0020] Figure label:

[0021] 1. Support tube, 2. Resistance strip, 3. Inner water-cooling tube, 4. Enclosing tube, 5. Annular space, 6. Outer water-cooling tube, 7. Reflective layer, 8. Heat insulation layer, 9. Light-transmitting tube, 10. Heat-absorbing layer. Detailed Implementation

[0022] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0023] This embodiment provides a photothermal compatible water-cooled resistor, such as... Figure 1 and Figure 2 As shown, the device includes an insulated and transparent support tube 1, with a resistance strip 2 spirally wound around the outer surface of the support tube 1. The resistance strip 2 glows red when energized. The heating and glowing of the resistance strip 2 are related to its wire diameter, the magnitude of the current and voltage, and the energizing time. The glowing is temperature-induced; it glows red when the preset temperature is exceeded. The actual thickness of the resistance strip 2 can be determined based on the rated voltage. If it is a round iron wire (i.e., wire diameter specification), the radial cross-sectional area of ​​the resistance strip 2 is designed to meet the glowing requirements under rated voltage conditions. For example, at 220V, the energizing time for a resistance strip 2 with a wire diameter of x millimeters to begin glowing is S seconds, and the temperature rise curve over time is obtained experimentally.

[0024] An inner water-cooling pipe 3 passes through the support tube 1. When the resistor strip 2 emits light, some of its light is evenly projected inward onto the surface of the inner water-cooling pipe 3. A surrounding tube 4, made of metal, is fitted around the support tube 1. The surrounding tube 4 and the support tube 1 form an annular space 5. Multiple outer water-cooling pipes 6 are arranged around the annular space 5, evenly distributed along a circular trajectory. Each outer water-cooling pipe 6 is arranged along the axial direction of the support tube 1, so that some of the light and heat from the resistor strip 2 is directly radiated onto the side of the outer water-cooling pipe 6 closest to the support tube 1. A reflective layer 7 is provided on the inner wall of the surrounding tube 4. A gap is left between adjacent outer water-cooling pipes 6 to allow for... Figure 2 The light from the resistor strip 2, indicated by the dashed line L, passes through the gap and the reflective layer 7 and strikes the side of the outer water-cooling pipe 6 away from the support pipe 1. Both the outer water-cooling pipe 6 and the inner water-cooling pipe 3 are connected to the external water supply mechanism to circulate cooling water within them to remove heat.

[0025] In this embodiment, the surface of the surrounding tube 4 is covered with a heat insulation layer 8 to further prevent the light and heat from escaping.

[0026] In this embodiment, a light-transmitting tube 9 is also sleeved on the outside of the support tube 1. The light-transmitting tube 9 and the support tube 1 form a sealed and vacuum-evacuated chamber. The light-transmitting tube 9 and the support tube 1 together surround the resistor strip 2. By sealing it with a vacuum, oxidation of the resistance wire is prevented, thus improving the service life of the resistor. Both the support tube 1 and the light-transmitting tube 9 are quartz glass tubes, which allows light and heat to diffuse more evenly to the inner water-cooling tube 3 and the outer water-cooling tube 6.

[0027] In this embodiment, the surface of the inner water-cooling pipe 3 and the surface of the outer water-cooling pipe 6 are coated with a heat-absorbing layer 10.

[0028] In practice, the ends of the support tube 1, inner water-cooling tube 3, outer water-cooling tube 6, and surrounding tube 4 are fixed, and gaps are left between the outer water-cooling tube 6 and the surrounding tube 4, as well as the support tube 1. By adjusting the distance between the resistor strip 2 and the inner water-cooling tube 3 and the outer water-cooling tube 6, a high-voltage resistor can be made, as long as the insulation distance of the high-voltage resistor is met.

[0029] The actual manufacturing process of the above resistors includes the following steps:

[0030] 1. Wrap the resistor strip 2 around the quartz glass tube to make a wire-wound resistor;

[0031] 2. Install a quartz glass tube on the outside of resistor strip 2 to protect resistor strip 2;

[0032] 3. Install a metal tube on the outside of the resistor, and install an insulation layer on the outside of the metal tube to prevent the heat of the resistor from spreading out of the metal tube. Coat the inside of the metal tube with a reflective layer 7 to reflect the light of the resistor heating up.

[0033] 4. Install multiple external water-cooling pipes 6 between the metal tube and the resistor strip 2, with the installation density just enough to allow light to pass through the reflective layer 7 and be transmitted to the other side of the external water-cooling pipes 6.

[0034] 5. A heat-absorbing coating is applied to the outside of the external water-cooling pipe 6. The light generated by the heating of the resistor strip 2 is radiated onto the external water-cooling pipe 6 and absorbed by the external water-cooling pipe 6. The heat is then carried away by the circulating water.

[0035] 6. Similarly, an internal water cooling pipe 3 is installed in the middle to remove the heat from the resistor strip 2 using the same principle.

[0036] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which 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 solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A photothermally integrated water-cooled resistor, comprising an insulated and light-transmitting support tube, wherein a resistor strip is provided on the outer side of the support tube, characterized in that: the resistor... When energized, the resistor emits a bright red light. An inner water-cooling pipe runs through the support tube, allowing some of the light from the resistor to shine inwards onto the surface of the inner water-cooling pipe. An outer sleeve surrounds the support tube, forming an annular space between the outer sleeve and the support tube. Multiple outer water-cooling pipes are arranged around this annular space, with each outer water-cooling pipe running along the axial direction of the support tube, so that some of the light from the resistor shines onto the side of the outer water-cooling pipe closest to the support tube. A reflective layer is provided on the inner wall of the outer sleeve, and a gap is left between adjacent outer water-cooling pipes, allowing some of the light from the resistor to pass through the gap and the reflective layer onto the side of the outer water-cooling pipe furthest from the support tube. Both the outer and inner water-cooling pipes are connected to an external water supply mechanism to allow cooling water to circulate within them.

2. The photothermally compatible water-cooled resistor according to claim 1, characterized in that: The surface of the surrounding pipe is covered with a heat insulation layer.

3. The photothermal coupled water-cooled resistor according to claim 1, characterized in that: A light-transmitting tube is also fitted on the outside of the support tube, and the light-transmitting tube and the support tube together surround the resistor strip.

4. The photothermal-coated water-cooled resistor according to claim 3, characterized in that: Both the support tube and the light-transmitting tube are made of quartz glass.

5. A photothermally coupled water-cooled resistor according to claim 3, characterized in that: A sealed and evacuated chamber is formed between the light-transmitting tube and the support tube.

6. The photothermally coupled water-cooled resistor according to claim 1, characterized in that: The surfaces of the inner and outer water-cooling pipes are coated with a heat-absorbing layer.

7. The photothermally compatible water-cooled resistor according to claim 1, characterized in that: The ends of the support pipe, inner water cooling pipe, outer water cooling pipe and surrounding pipe are fixed, and a gap is left between the outer water cooling pipe and the surrounding pipe and the support pipe.

8. The photothermally compatible water-cooled resistor according to claim 1, characterized in that: Multiple external water-cooling pipes are evenly arranged along a circular trajectory.

9. A photothermally coupled water-cooled resistor according to claim 1, characterized in that: The resistor bar is spirally wound around the outer surface of the support tube.

10. A photothermally coupled water-cooled resistor according to claim 1, characterized in that: The surrounding tube is a metal tube.

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