CN116096055A

CN116096055A - Radiator with sealing plate

Info

Publication number: CN116096055A
Application number: CN202310207568.XA
Authority: CN
Inventors: 杜小斌; 杜小荣
Original assignee: Zhenjiang Dongya Electronic Parts Co ltd
Current assignee: Zhenjiang Dongya Electronic Parts Co ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-05-09

Abstract

A radiator with a sealing plate relates to an improvement of a radiator, in particular to a radiator with a sealing plate. The heat exchange tube comprises a sealing plate, fins, a heat exchange tube, a water inlet and a water outlet; the sealing plates are fixed on two sides of the fins, the heat exchange tubes are inserted into the fins, and the water inlet and the water outlet are fixedly arranged at two ends of the heat exchange tubes. The design fully utilizes the rapid heat transfer property of phase change heat transfer and steam diffusion, has the advantages of extremely high heat conduction capacity, excellent isothermal property, reversibility of flow direction, good environmental adaptability and the like, and can meet the requirements of electronic and electrical equipment on compactness, reliability, control flexibility, high heat dissipation efficiency and the like of a heat dissipation device. The heat dissipation area is increased, the fins are fixed by the rivet, deflection and other defects cannot occur, the rigidity of the radiator is increased, transportation is facilitated, vibration of the fins in the heat dissipation process is greatly reduced, the fins are prevented from being mutually collided, and the service life of the product is prolonged.

Description

Radiator with sealing plate

Technical Field

The invention relates to an improvement of a radiator, in particular to a radiator with a sealing plate.

Background

Currently, common heat dissipation methods for electronic components include air-cooled heat dissipation mainly using natural air cooling and forced air cooling, liquid-cooled heat dissipation mainly using indirect cooling, thermoelectric refrigeration heat dissipation, and heat exchange tube heat dissipation. The natural convection heat dissipation is achieved by utilizing gaps among components in the equipment and heat conduction, convection and radiation of the shell. The method is suitable for low-power-consumption electronic devices and components with low requirements on temperature control and low heat flux density of device heating, and sealed or densely assembled devices which are not suitable for other heat dissipation methods. Because the heat conductivity coefficient and the heat capacity of the liquid are much larger than those of air, the liquid cooling heat dissipation has smaller heat transfer resistance and higher heat exchange efficiency than that of air cooling heat dissipation, but the system has complex structure, high power consumption, high installation requirement and high maintenance cost, and when the radiator is used, if the element has larger heat dissipation requirement, the density and the length of the fins of the radiator must be increased, so that the purposes of increasing the heat dissipation area and enhancing the heat dissipation effect are achieved. In this way, the fins may vibrate to generate abnormal sound or even strike due to wind or water flow. The whole radiator is easy to skew due to the fact that the fixing main body is not arranged, and the radiator is not convenient to transport.

Disclosure of Invention

The invention aims at overcoming the defects and shortcomings of the prior art, and provides the radiator with the sealing plate. The heat dissipation area is increased, the fins are fixed by the rivet, deflection and other defects cannot occur, the rigidity of the radiator is increased, transportation is facilitated, vibration of the fins in the heat dissipation process is greatly reduced, the fins are prevented from being mutually collided, and the service life of the product is prolonged.

In order to achieve the above purpose, the invention adopts the following technical scheme: the heat exchange tube comprises a sealing plate 1, fins 2, heat exchange tubes 3, a water inlet 4 and a water outlet 5; the both ends of shrouding 1 are fixed respectively in the both sides of fin 2, and the top of shrouding 1 is connected with the top fixed of fin 2, and heat exchange tube 3 is pegged graft in fin 2, and water inlet 4 and delivery port 5 are fixed to be set up in the both ends of heat exchange tube 3.

The heat exchange tube 3 is a 90-degree bent tube, tube holes 21 are punched on the fins 2, and the fins 2 are sleeved on the heat exchange tube 3 through the tube holes 21. If the included angle of the heat exchange tube 3 is too large, liquid return is not facilitated, and the heat exchange tube is too small to install conveniently.

The fins 2 and the heat exchange tubes 3 are made of copper materials, and the heat exchange tubes 3 are welded on the fins 2 by silver tin. The copper fin 2 and the copper conductive plate of the semiconductor element are welded into a whole, and the copper fin 2 is extruded by a die. The fin 2 and the heat dissipation exchange 3 pipe made of the same material are easy to weld to form a good welding surface, so that the contact thermal resistance of the contact surface can be reduced, the fin 2 is made of the same material as the copper conducting plate of the semiconductor element, copper materials can be saved, and the contact thermal resistance can be minimized. The radiator with the heat exchange tube 3 of the design avoids the problem of electric corrosion in long-term contact conduction of the copper heat exchange tube 3 and the fins 2 in the existing radiator, prolongs the service life, improves the reliability and the capacity (more than 4300W), reduces the contact thermal resistance and the total thermal resistance (less than 0.013 ℃/W), adopts a die to extrude a plate with mounting holes to replace manual drilling, can save materials and working hours, and improves the processing efficiency and the quality.

The cross section of the heat exchange tube 3 is a circular flow passage, so that the tightness of the joint is ensured, the whole flow passage is generally Z-shaped, a cooling working medium in the heat exchange tube 3 enters the Z-shaped flow passage from a section of water inlet 4, heat transferred from the bottom is taken away through the flow passage, and then flows out from a water outlet 5 at the other end. Finally releasing heat, thereby achieving the purpose of cooling. The heat dissipation mechanism is that heat is transmitted to a flow channel from the bottom of the radiator, and is mostly absorbed by a cooling working medium in the flow channel in a heat transmission mode, then the heat is taken away along with the flow of the cooling working medium, and finally the heat is released to an external mechanism of the radiator by the cooling working medium, namely heat exchange is carried out, so that the purpose of heat dissipation and temperature reduction of a system is achieved. In the process, there are mainly two heat transfer modes, a convection heat transfer mode and a heat conduction mode.

The both ends of shrouding 1 are provided with fixed screw 11 respectively, and the radiator is fixed through fixed screw 11 on the shrouding 1. In this way, the fins are prevented from vibrating to generate abnormal sound or even striking due to wind or water flow, and the service life of the product is prolonged.

The heat exchange tube 3 is mainly composed of a shell 31, a wick 32 and a vapor passage 33, the wick 32 being disposed between the shell 31 and the vapor passage 33. The inside of the heat exchange tube is pumped into a negative pressure state, and proper liquid working medium is filled. The liquid working medium is a medium for heat transfer of the heat exchange tube. A wick 32 is provided within the plate and functions to transport the working substance from one end to the other by capillary suction created by surface tension with the working substance. The wick 32 can take a variety of forms including single or double layer wire mesh, fine wire, porous materials, and the like. The wick 32, in addition to serving to transport the working fluid, also distributes the working fluid evenly throughout the heating section. When the heat exchange tube 3 obtains heat from a heat source, the working medium in the plate rapidly boils and vaporizes, and the surrounding working medium is liquid at the moment, so that pressure difference is generated at two ends. The vapor flows around under this pressure differential and releases heat to condense back into a liquid which is returned to the vicinity of the heat source by the porous material Mao Xili. In this way, heat is continuously carried from one end of the heat pipe to the other end. The section of the heat exchange tube where the working medium is vaporized is called an evaporation section 311, and the section where the surrounding condensation is called a condensation section 312. Because this is a phase change heat transfer, the heat transfer is far in excess of convection or heat transfer and the cycle is very rapid, allowing the heat to be carried away quickly.

The shell 31 comprises an evaporation section 311 and a condensation section 312, heat is transferred to the evaporation section 311 from an external heat source, and the heat is transferred to an interface through the shell 31 and the liquid suction core 32 filled with working liquid to raise the temperature of working medium; the liquid rises in temperature in the evaporator section 311 and evaporates until it is saturated with vapor. At this time, heat is transferred to the steam in a latent heat manner; the saturated vapor pressure gradually increases as the temperature of the liquid increases. The steam in the steam passage 33 flows to the low pressure portion, i.e., the cooler condensation section 312; the steam condenses at the vapor-liquid interface within condensing section 312, giving off a large amount of latent heat; heat is transferred from the vapor-liquid interface to the cold source through the wick 32 and the tube shell 31; the condensed liquid wicks within the wick 32 to return the condensed working liquid to the evaporator end 311 for a complete cycle. During operation, the liquid-phase working medium in the evaporation section 311 absorbs heat from an external heat source and evaporates into steam, the steam flows to the condensation section 312 for cooling, and finally the working medium in the condensation section transfers heat to an external cold source to cool the steam into liquid, so that the heat is quickly transferred from one end to the other end.

The working principle of the invention is as follows: the heat exchange tube 3 is a heat conducting element, and the heat conduction and heat transfer principle is that the cooling working medium in the heat exchange tube takes away a large amount of heat through evaporation of the working medium and releases a large amount of heat through condensation to circulate, so that heat transfer is realized, and the effect of cooling is achieved. When the heat exchange tube 3 is used, a proper amount of a cooling working medium with low boiling point, which is easy to volatilize, is injected into the heat exchange tube. The heat exchange tube 3 dissipates heat in two stages: first: the evaporation section 311, also called the endothermic stage; second, the condensing section 312 releases heat, i.e., heat exchange is achieved, and the cooling liquid is condensed and flows back into the wick 32 in a liquid state. Through the circulation of the two stages, the effect of cooling is achieved, the heat conductivity is high, and the heat conducting performance is good.

After the technical scheme is adopted, the invention has the beneficial effects that: the design fully utilizes the rapid heat transfer property of phase change heat transfer and steam diffusion, has the advantages of extremely high heat conduction capacity, excellent isothermal property, reversibility of flow direction, good environmental adaptability and the like, and can meet the requirements of electronic and electrical equipment on compactness, reliability, control flexibility, high heat dissipation efficiency and the like of a heat dissipation device. The heat dissipation area is increased, the fins are fixed by the rivet, deflection and other defects cannot occur, the rigidity of the radiator is increased, transportation is facilitated, vibration of the fins in the heat dissipation process is greatly reduced, the fins are prevented from being mutually collided, and the service life of the product is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a perspective view of a shrouded heat sink;

FIG. 2 is a front view of a shrouded heat sink;

FIG. 3 is a schematic view of portion A of FIG. 1;

FIG. 4 is a schematic illustration of a heat exchange tube with a shrouded radiator;

FIG. 5 is a top view of a shrouded heat sink;

FIG. 6 is a side view of a shrouded heat sink;

reference numerals illustrate: the heat exchange tube comprises a sealing plate 1, fins 2, heat exchange tubes 3, a water inlet 4, a water outlet 5, tube holes 21, fixing screw holes 11, a shell 31, a liquid suction core 32, a steam channel 33, an evaporation section 311 and a condensation section 312.

Description of the embodiments

Referring to fig. 1-6, the technical scheme adopted in the specific embodiment is as follows: comprises a sealing plate 1, fins 2, heat exchange tubes 3, a water inlet 4 and a water outlet 5; both ends of shrouding (1) are fixed respectively in the both sides of fin (2), and the top of shrouding (1) is fixed connection with the top of fin (2), and fin 2 and heat exchange tube 3 adopt copper material, and heat exchange tube 3 adopts silver tin welding on fin 2. The copper fin 2 and the copper conductive plate of the semiconductor element are welded into a whole, and the copper fin 2 is extruded by a die. The fin 2 and the heat dissipation exchange 3 pipe made of the same material are easy to weld to form a good welding surface, so that the contact thermal resistance of the contact surface can be reduced, the fin 2 is made of the same material as the copper conducting plate of the semiconductor element, copper materials can be saved, and the contact thermal resistance can be minimized. The radiator with the heat exchange tube 3 of the design avoids the problem of electric corrosion in long-term contact conduction of the copper heat exchange tube 3 and the fins 2 in the existing radiator, prolongs the service life, improves the reliability and the capacity (more than 4300W), reduces the contact thermal resistance and the total thermal resistance (less than 0.013 ℃/W), adopts a die to extrude a plate with mounting holes to replace manual drilling, can save materials and working hours, and improves the processing efficiency and the quality. The both ends of shrouding 1 are provided with fixed screw 11 respectively, and the radiator is fixed through fixed screw 11 on the shrouding 1. The sealing plate 1 is used for preventing the fins from vibrating to generate abnormal sound or even striking due to wind or water flow, and the service life of the product is prolonged.

The heat exchange tube 3 is inserted into the fin 2, the heat exchange tube 3 is a 90-degree bent tube, the fin 2 is punched with tube holes 21, and the fin 2 is sleeved on the heat exchange tube 3 through the tube holes 21. If the included angle of the heat exchange tube 3 is too large, liquid return is not facilitated, and the heat exchange tube is too small to install conveniently. The cross section of the heat exchange tube 3 is a circular flow passage, so that the tightness of the joint is ensured, the whole flow passage is generally Z-shaped, a cooling working medium in the heat exchange tube 3 enters the Z-shaped flow passage from a section of water inlet 4, heat transferred from the bottom is taken away through the flow passage, and then flows out from a water outlet 5 at the other end. Finally releasing heat, thereby achieving the purpose of cooling. The heat dissipation mechanism is that heat is transmitted to a flow channel from the bottom of the radiator, and is mostly absorbed by a cooling working medium in the flow channel in a heat transmission mode, then the heat is taken away along with the flow of the cooling working medium, and finally the heat is released to an external mechanism of the radiator by the cooling working medium, namely heat exchange is carried out, so that the purpose of heat dissipation and temperature reduction of a system is achieved. In the process, there are mainly two heat transfer modes, a convection heat transfer mode and a heat conduction mode.

The water inlet 4 and the water outlet 5 are fixedly arranged at two ends of the heat exchange tube 3. The heat exchange tube 3 is mainly composed of a shell 31, a wick 32 and a vapor passage 33, the wick 32 being disposed between the shell 31 and the vapor passage 33. The inside of the heat exchange tube is pumped into a negative pressure state, and proper liquid working medium is filled. The liquid working medium is a medium for heat transfer of the heat exchange tube. A wick 32 is provided within the plate and functions to transport the working substance from one end to the other by capillary suction created by surface tension with the working substance. The wick 32 can take a variety of forms including single or double layer wire mesh, fine wire, porous materials, and the like. The wick 32, in addition to serving to transport the working fluid, also distributes the working fluid evenly throughout the heating section. When the heat exchange tube 3 obtains heat from a heat source, the working medium in the plate rapidly boils and vaporizes, and the surrounding working medium is liquid at the moment, so that pressure difference is generated at two ends. The vapor flows around under this pressure differential and releases heat to condense back into a liquid which is returned to the vicinity of the heat source by the porous material Mao Xili. In this way, heat is continuously carried from one end of the heat pipe to the other end. The section of the heat exchange tube where the working medium is vaporized is called an evaporation section 311, and the section where the surrounding condensation is called a condensation section 312. Because this is a phase change heat transfer, the heat transfer is far in excess of convection or heat transfer and the cycle is very rapid, allowing the heat to be carried away quickly. The shell 31 comprises an evaporation section 311 and a condensation section 312, heat is transferred to the evaporation section 311 from an external heat source, and the heat is transferred to an interface through the shell 31 and the liquid suction core 32 filled with working liquid to raise the temperature of working medium; the liquid rises in temperature in the evaporator section 311 and evaporates until it is saturated with vapor. At this time, heat is transferred to the steam in a latent heat manner; the saturated vapor pressure gradually increases as the temperature of the liquid increases. The steam in the steam passage 33 flows to the low pressure portion, i.e., the cooler condensation section 312; the steam condenses at the vapor-liquid interface within condensing section 312, giving off a large amount of latent heat; heat is transferred from the vapor-liquid interface to the cold source through the wick 32 and the tube shell 31; the condensed liquid wicks within the wick 32 to return the condensed working liquid to the evaporator end 311 for a complete cycle. During operation, the liquid-phase working medium in the evaporation section 311 absorbs heat from an external heat source and evaporates into steam, the steam flows to the condensation section 312 for cooling, and finally the working medium in the condensation section transfers heat to an external cold source to cool the steam into liquid, so that the heat is quickly transferred from one end to the other end.

The foregoing is merely illustrative of the present invention and not restrictive, and other modifications and equivalents thereof may occur to those skilled in the art without departing from the spirit and scope of the present invention.

Claims

1. A take shrouded radiator which characterized in that: the heat exchange tube comprises a sealing plate (1), fins (2), heat exchange tubes (3), a water inlet (4) and a water outlet (5); the both ends of shrouding (1) are fixed respectively in the both sides of fin (2), and the top of shrouding (1) is fixed with the top fixed connection of fin (2), and heat exchange tube (3) are pegged graft in fin (2), and water inlet (4) and delivery port (5) are fixed to be set up in the both ends of heat exchange tube (3).

2. A shrouded heat sink as in claim 1 wherein: the heat exchange tube (3) is a 90-degree bent tube; the fins (2) are punched with pipe holes (21), and the fins (2) are sleeved on the heat exchange pipe (3) through the pipe holes (21).

3. A shrouded heat sink as in claim 1 wherein: the fins (2) and the heat exchange tubes (3) are made of copper materials, and the heat exchange tubes (3) are welded on the fins (2) by silver and tin.

4. A shrouded heat sink as in claim 1 wherein: the cross section of the heat exchange tube (3) is a circular flow passage, the whole flow passage is generally Z-shaped, cooling working medium in the heat exchange tube (3) enters the Z-shaped flow passage from a section of water inlet (4), heat transferred from the bottom is taken away through the flow passage, and then flows out from a water outlet (5) at the other end.

5. A shrouded heat sink as in claim 1 wherein: the two ends of the sealing plate (1) are respectively provided with a fixed screw hole (11), and the radiator is fixed through the fixed screw holes (11) on the sealing plate (1).

6. A shrouded heat sink as in claim 1 wherein: the heat exchange tube (3) mainly comprises a shell (31), a liquid suction core (32) and a steam channel (33), wherein the liquid suction core (32) is arranged between the shell (31) and the steam channel (33).

7. A shrouded heat sink as in claim 1 wherein: the shell (31) comprises an evaporation section (311) and a condensation section (312), heat is transferred to the evaporation section (311) from an external heat source, and the heat is transferred to an interface through the shell (31) and the liquid suction core (32) filled with working liquid to raise the temperature of the working medium; the liquid rises in temperature in the evaporation section (311), and the liquid evaporates until saturated with steam. At this time, heat is transferred to the steam in a latent heat manner; the saturated vapor pressure gradually increases as the temperature of the liquid increases. The steam in the steam channel (33) flows to a low-pressure part, namely a condensing section (312) with lower temperature; the steam condenses at the vapor-liquid interface within the condensing section (312), giving off a large latent heat; heat is transferred to a cold source from a vapor-liquid interface through a liquid suction core (32) and a tube shell (31); the condensed liquid flows back to the evaporation section (311) in the wick (32) due to capillary action, thus completing a complete cycle.