TW201947201A - Leak-detectable liquid-heat-transmission device - Google Patents

Abstract

A leak-detectable liquid-heat-transmission device including a heat conductive plate, a cover covering on one surface of the heat conductive plate, and a channel structure disposed in the cover is provided in the present disclosure. The channel structure is arranged on the heat conductive plate and the cover. A flow chamber and a leak detecting channel surrounding and isolated from the flow chamber is defined between the cover and the heat conductive plate by the channel structure. An inlet and an outlet respectively communicated with the flow chamber are defined on the cover, and a fluid sensor for detecting the working fluid leaking from the flow chamber is arranged in the leak detecting channel.

Description

Measurable liquid-cooled heat transfer device

The invention relates to a liquid-cooled heat transfer device used in a liquid-cooled system, in particular to a measurable liquid-cooled heat transfer device capable of detecting the leakage of a cooling liquid.

High-efficiency electronic devices generally generate a large amount of thermal energy during operation, and it is impossible to exclude the heat generated by the fan alone. Therefore, liquid-cooled heat sinks are often used in high-efficiency electronic devices. Existing liquid-cooled heat sinks generally include a water-cooled head and a circulation pipe connected to the water-cooled head. The circulating pipe is filled with a working fluid. The water-cooled head contacts the heat source in the electronic device, and the working fluid exchanges heat through the water-cooled head heat source. The heat generated by the heat source is removed. Although the liquid-cooled heat sink has good heat exchange efficiency, the biggest disadvantage of the liquid-cooled heat sink is that the working fluid is easy to leak. Since the water-cooled head directly contacts the heat source (ie, the electronic component), once the working fluid leakage occurs, the water-cooled head will overflow to the electronic component and cause damage to the electronic device.

In view of this, the present inventors have devoted themselves to the above-mentioned prior art, researched intensively and cooperated with the application of science to try to solve the above-mentioned problems, which has become the goal of the inventors' improvement.

The present invention provides a measurable liquid-cooled heat transfer device capable of detecting cooling liquid leakage.

The invention provides a measurable liquid-cooled heat transfer device, which includes a heat conductive plate, a cover covering one side of the heat conductive plate, and a first-class channel structure arranged in the cover. The flow channel structure is between the heat conductive plate and the cover. A circulation chamber is formed between the cover and a leak detection tank surrounding the circulation chamber and isolated from the circulation chamber. A cover is provided with a water inlet and a water outlet that communicate with the circulation chamber. A fluid sensing probe is provided.

The leak-testable liquid-cooled heat transfer device of the present invention has a flow channel structure including a plurality of fins arranged in a flow chamber in a spaced relationship with each other, and the fins are arranged between a water inlet and a water outlet, and the longitudinal edges of each fin are The surface of the heat conducting plate extends, and each fin is respectively connected to the heat conducting plate and the cover. Each fin may protrude from the surface of the heat conducting plate and protrude laterally to the contact cover. Each of the fins may be convexly formed on an inner surface of the cover and laterally protrude to contact the heat conductive plate.

The leak-detectable liquid-cooled heat transfer device of the present invention can be provided with an inner seal ring between a heat conducting plate and a flow channel structure. An inner seal ring may also be sandwiched between the cover and the flow channel structure. The inner sealing ring surrounds the flow-through chamber, and the leak detection groove surrounds the inner sealing ring. The flow channel structure includes a ring wall surrounding the circulation chamber. A groove is formed on the top edge of the ring wall, and an inner sealing ring is embedded in the groove.

In the leak-detectable liquid-cooled heat transfer device of the present invention, a groove is formed on the outer edge of the casing, and the groove surrounds the leak-detecting groove. An outer seal ring is embedded in the groove, and the outer seal ring is clamped on a heat conducting plate And the cover.

In the liquid-cooled heat transfer device of the present invention, a leak detection groove with a flow channel structure is arranged in the casing, and the working fluid flows along the flow channel structure. Once a leakage occurs between the heat conducting plate and the casing, the fluid in the leak detection groove is The probe can detect the working fluid seeping out of the circulation chamber and transmit a corresponding signal for performing a corresponding processing action.

Referring to FIGS. 1 to 3, a first embodiment of the present invention provides a liquid-cooled heat transfer device, which includes a heat conducting plate 100, a cover 200, and a first-stage structure 300.

In this embodiment, the liquid-cooled heat transfer device of the present invention is

The cover 200 is covered on the heat output side of the heat conducting plate 100. A groove 201 is formed on the outer edge of the cover 200, and the groove 201 surrounds the circulation chamber 210. An outer seal ring 241 is embedded in the groove 201, and the outer seal is sealed. The ring 241 is sandwiched between the heat conductive plate 100 and the cover 200 to seal the heat conductive plate 100 and the cover 200.

The flow channel structure 300 is disposed inside the cover 200, and a flow chamber 210 and a leak detection groove 202 are formed between the heat transfer plate 100 and the cover 200 by the flow channel structure 300, and the leak detection groove 202 surrounds the circulation The chamber 210 is isolated from the flow chamber 210, but the present invention is not limited thereto. The flow channel structure 300 may also include a plurality of leak detection grooves 202 arranged around the flow chamber 210. The flow chamber 210 allows a working fluid 30 (which may be water or other liquid or gas) to pass therethrough to perform heat exchange with the heat output side of the heat conducting plate 100.

The cover 200 is provided with a water inlet 211 for the working fluid 30 to flow into the circulation chamber 210 and a water outlet 212 for the working fluid 30 to flow out of the circulation chamber 210. After the working fluid 30 flows out of the circulation chamber 210 through the water outlet 212, it can be cooled and then circulated into the circulation chamber 210 through the water inlet 211. However, the present invention is not limited thereto. The working fluid 30 flows out of the circulation chamber 210 through the water outlet 212. It can also be discharged directly without backflow.

In this embodiment, the flow channel structure 300 includes a plurality of fins 310 and an annular wall 320 surrounding the plurality of fins 310 arranged at intervals. The fins 310 are arranged between the water inlet 211 and the water outlet 212, and the longitudinal direction of each fin 310 extends along the surface of the heat conducting plate 100. In this embodiment, each of the fins 310 has a pair of oppositely disposed side edges 311a / 311b that are respectively connected to the heat conducting plate 100 and the cover 200, and each of the fins 310 is preferably convexly formed on the cover. The inner surface of the case 200 projects laterally to contact the heat conducting plate 100 so that each side edge 311a / 311b is connected to the heat conducting plate 100 and the cover 200, respectively.

In this embodiment, an inner seal ring 242 is sandwiched between the heat conducting plate 100 and the flow channel structure 300. The inner seal ring 242 surrounds the flow chamber 210, and the leak detection groove 202 surrounds the inner seal ring 242 to seal and separate the measurement. Leak slot 202 and flow chamber 210. The top edge of the ring wall 320 is preferably provided with a groove 321 and the inner sealing ring 242 is embedded in the groove 321 and is clamped between the heat conducting plate 100 and the flow channel structure 300.

In this embodiment, the two ends of each fin 310 are a connecting end 312 a connected to the inner wall of the cover 200 and a separate end 312 b spaced from the inner wall of the cover 200. The connecting ends 312 a and the separating ends 312 b of the fins 310 are interspersed and arranged, whereby the fins 310 are formed within the circulation chamber 210 to communicate between the water inlet 211 and the water outlet 212 and extend in a roundabout manner along the surface of the heat conductive plate 100 Single flow channel 220.

The working fluid 30 enters the circulation chamber 210 through the water inlet 211 and the working fluid 30 flows through the circulation chamber 210 along the flow channel structure 300. The working fluid 30 bypasses the surface of the heat transfer plate 100 through the single flow channel 220 and performs heat exchange. The thermal energy in the heat conducting plate 100 is fully absorbed, and then the working fluid 30 is discharged out of the circulation chamber 210 through the water outlet 212 to discharge the thermal energy to the liquid-cooled heat transfer device. The liquid-cooled heat transfer device of the present invention guides the working fluid 30 from the water inlet 211 to the water outlet 212 through the fins 310. The working fluid 30 flows through the heat conducting plate 100 and performs heat exchange with the heat conducting plate 100, so that the heat conducting plate 100 can be transferred. The internal thermal energy is transferred to the working fluid 30.

Once the leakage of the circulation chamber 210 (may be a slight leakage or an abnormal leakage in the limit table is allowed), the tight state is broken, the working fluid 30 penetrates the leak detection groove 202 but the outer sealing ring 241 can still prevent it. The working fluid 30 oozes a liquid-cooled heat transfer device through the heat transfer plate 100 and the cover 200. At least one fluid sensing probe 400 is disposed in the leak detection tank 202. The fluid sensing probe 400 in the leak detection tank 202 can detect the working fluid 30 and transmit a corresponding signal for a corresponding processing action (such as driving An indicator light is on or the water pump pumping the working fluid 30 is turned off). In this embodiment, each fluid sensing probe 400 preferably transmits a signal through a wire, but the present invention is not limited thereto, and each fluid sensing probe 400 can also wirelessly transmit signals. In this embodiment, a plurality of fluid sensing probes 400 are preferably provided in the leak detection tank 202, and the fluid sensing probes 400 are respectively disposed on multiple sides of the circulation chamber 210 so that the circulation chamber 210 can be detected. Adhesive state on each side.

Referring to FIGS. 4 to 6, a second embodiment of the present invention provides a liquid-cooled heat transfer device, which includes a heat conducting plate 100, a cover 200, and a first-stage structure 300. The cover 200 is covered on the heat output side of the heat transfer plate 100, and the flow channel structure 300 is disposed inside the cover 200, and a flow chamber is formed between the heat transfer plate 100 and the cover 200 by the flow channel structure 300. 210 and a leak detection tank 202. The leak detection tank 202 surrounds the flow chamber 210 and is isolated from the flow chamber 210. The flow chamber 210 allows a working fluid 30 (which may be water or other liquids) to pass therethrough to perform heat exchange with the heat output side of the heat conducting plate 100. The cover 200 is provided with a water inlet 211 for the working fluid 30 to flow into the circulation chamber 210 and a water outlet 212 for the working fluid 30 to flow out of the circulation chamber 210.

The structure of this embodiment is similar to that of the first embodiment, and the same points are omitted here, and the differences between this embodiment and the first embodiment are described in detail below. In this embodiment, each of the fins 310 protrudes formed on the surface of the heat conducting plate 100 and projects laterally to the contact cover 200. The longitudinal direction of each of the fins 310 extends along the surface of the heat conducting plate 100 and the two ends of each of the fins 310. They are spaced apart from the inner wall of the cover 200, respectively. The flow channel structure 300 further includes an annular wall 320 surrounding the fins 310. The annular wall 320 divides the inside of the housing 200 into a circulation chamber 210 and a leak detection groove 202. The fins 310 are arranged inside the circulation chamber 210. A plurality of shunt channels 230 are formed to communicate between the water inlet 211 and the water outlet 212, respectively. In this embodiment, the inner seal ring 242 is sandwiched between the annular wall 320 and the cover 200. The top edge of the ring wall 320 is preferably provided with a groove 321 and the inner sealing ring 242 is embedded in the groove 321 and is clamped between the heat conducting plate 100 and the flow channel structure 300.

The working fluid 30 enters the circulation chamber 210 through the water inlet 211 and flows through the surface of the heat conducting plate 100 through the diverging channels 230 to sufficiently absorb the thermal energy in the heat conducting plate 100. Then, the working fluid 30 is discharged out of the circulation chamber 210 through the water outlet 212 and Heat energy is discharged from the liquid-cooled heat transfer device. Once a leakage occurs in the flow-through chamber 210, the fluid sensing probe 400 in the leak detection tank 202 can detect the working fluid 30 leaking out of the flow-through chamber 210 and transmit a corresponding signal for performing a corresponding processing action.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the patent scope of the present invention. Other equivalent changes using the patent spirit of the present invention shall all belong to the patent scope of the present invention.

20‧‧‧Heat source

30‧‧‧working fluid

100‧‧‧Heat conduction plate

200‧‧‧Cover

201‧‧‧ Trench

202‧‧‧Leak detection tank

210‧‧‧Circulation chamber

211‧‧‧Inlet

212‧‧‧outlet

220‧‧‧Single runner

230‧‧‧ Diversion channel

241‧‧‧outer seal

242‧‧‧Inner sealing ring

300‧‧‧ runner structure

310‧‧‧ Fin

311a / 311b‧‧‧Side edge

312a‧‧‧Connector

312b‧‧‧Separation end

320‧‧‧ ring wall

321‧‧‧Groove

400‧‧‧fluid sensing probe

FIGS. 1 to 3 are schematic diagrams of a measurable liquid-cooled heat transfer device according to a first embodiment of the present invention.

FIG. 4 to FIG. 6 are schematic diagrams of a measurable liquid-cooled heat transfer device according to a second embodiment of the present invention.

Claims (9)

A measurable liquid-cooled heat transfer device includes a heat transfer plate, a cover covering one side of the heat transfer plate, and a first-rate channel structure disposed within the cover. The flow channel structure is disposed between the heat transfer plate and the heat transfer plate. A circulation chamber is formed between the cover and a leak detection tank surrounding the circulation chamber and isolated from the circulation chamber. The casing is provided with a water inlet and a water outlet that communicate with the circulation chamber. A fluid sensing probe is disposed in the leak detection slot. The measurable liquid-cooled heat transfer device according to claim 1, wherein the flow channel structure includes a plurality of fins arranged in the circulation chamber spaced from each other, and the fins are arranged at the water inlet and the water outlet In the meantime, the longitudinal direction of each fin extends along the surface of the heat conducting plate, and each of the fins is respectively connected to the heat conducting plate and the cover. The measurable liquid-cooled heat transfer device according to claim 2, wherein each of the fins is formed on a surface of the heat conductive plate and laterally protrudes to contact the cover. The measurable liquid-cooled heat transfer device according to claim 2, wherein each of the fins protrudes formed on an inner surface of the cover and projects laterally to contact the heat conducting plate. The measurable liquid-cooled heat transfer device according to claim 1, wherein an inner seal ring is sandwiched between the heat conducting plate and the flow channel structure, the inner seal ring surrounds the flow chamber, and the leak detection groove surrounds The inner seal. The measurable liquid-cooled heat transfer device according to claim 1, wherein an inner seal ring is sandwiched between the cover and the flow channel structure, the inner seal ring surrounds the circulation chamber, and the leak detection groove surrounds The inner seal. The measurable liquid-cooled heat transfer device according to claim 5, wherein the flow channel structure includes an annular wall surrounding the circulation chamber, a groove is opened at the top edge of the annular wall, and the inner seal ring is embedded in The groove. The measurable liquid-cooled heat transfer device according to claim 6, wherein the flow channel structure includes an annular wall surrounding the circulation chamber, a groove is formed at the top edge of the annular wall, and the inner seal ring is embedded in The groove. The measurable liquid-cooled heat transfer device according to claim 1, wherein a groove is formed on an outer edge of the casing, the groove surrounds the leak detection groove, an outer seal ring is embedded in the groove, and the An outer seal ring is sandwiched between the heat conducting plate and the cover.