CN108172555B - Heat dissipation device with gas water control unit - Google Patents
Heat dissipation device with gas water control unit Download PDFInfo
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- CN108172555B CN108172555B CN201711136648.1A CN201711136648A CN108172555B CN 108172555 B CN108172555 B CN 108172555B CN 201711136648 A CN201711136648 A CN 201711136648A CN 108172555 B CN108172555 B CN 108172555B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 161
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 38
- 230000009191 jumping Effects 0.000 claims abstract description 99
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 26
- 239000011810 insulating material Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 26
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 14
- 239000003570 air Substances 0.000 description 114
- 239000012528 membrane Substances 0.000 description 24
- 239000000463 material Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 238000001704 evaporation Methods 0.000 description 12
- 230000008020 evaporation Effects 0.000 description 12
- 239000004065 semiconductor Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/467—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing gases, e.g. air
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
- H01L23/427—Cooling by change of state, e.g. use of heat pipes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
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Abstract
一种带有气体控水单元的散热装置，包括散热器(7)、器件固定平台(18)、气压控水单元(14)和呼吸单元。气压控水单元(14)安装在所述散热器(7)的一侧，器件固定平台(18)位于散热器(7)的上部，呼吸单元嵌入散热器(7)中，功率器件固定于器件固定平台(18)上。气压控水单元(14)通过隔热材料与散热器(7)隔离，并通过导水管(12)与呼吸单元连接，向呼吸单元提供蒸发散热用水。当对呼吸单元膨胀气室的球缺形跳跃膜片(5)施加大于跳跃失稳点压力时，球缺形跳跃膜片(5)下凹，罩式曲面阀门关闭，压缩膨胀室(4)内的气体；球缺形跳跃膜片(5)上凸，罩式曲面阀门打开，吸进空气或水，排出膨胀室(4)内的气体。
A heat dissipation device with a gas water control unit, comprising a radiator (7), a device fixing platform (18), a gas pressure water control unit (14) and a breathing unit. The air pressure water control unit (14) is installed on one side of the radiator (7), the device fixing platform (18) is located on the upper part of the radiator (7), the breathing unit is embedded in the radiator (7), and the power device is fixed to the device on the fixed platform (18). The air pressure water control unit (14) is isolated from the radiator (7) by the heat insulating material, and is connected with the breathing unit through the water conduit (12), so as to provide the breathing unit with water for evaporative heat dissipation. When a pressure greater than the jumping instability point is applied to the spherical-shaped jumping diaphragm (5) of the inflation chamber of the breathing unit, the spherical-shaped jumping diaphragm (5) is concave, the hood-type curved valve is closed, and the expansion chamber (4) is compressed. The gas inside; the ball-shaped jumping diaphragm (5) is convex upward, the hood-type curved valve is opened, air or water is sucked in, and the gas in the expansion chamber (4) is discharged.
Description
Technical Field
The present invention relates to a heat dissipating device.
Background
Applications where heat dissipation is ubiquitous are recognized and accepted. Taking power electronics as an example, a large amount of heat is generated due to the self-loss of the power device, and the power loss is proportional to the power increase. The existing heat dissipation method mainly comprises the following steps: natural cooling, forced air exhaust cooling and water circulation cooling. The cooling effect, cost, complexity and energy loss of the wide bandgap semiconductor device are sequentially from low to high, the reliability is sequentially from high to low, and particularly in the wide bandgap semiconductor device with junction temperature as high as 225 ℃, the high temperature resistance of the wide bandgap semiconductor device cannot be exerted due to the temperature limitation of water circulation cooling. Therefore, heat dissipation is one of the key elements affecting the performance and quality of power electronic devices. The power density of the power device is the output power per unit volume, and the higher the output power per unit volume is, the better the performance of the device is. The natural cooling of the device is the first choice, and the natural cooling utilizes the heat source of the radiator to heat the ambient air under the condition of no natural wind, so as to generate cold-heat convection natural circulation heat dissipation, and has the advantages of simple and reliable natural cooling, low cost and the like. However, when the structure, volume and environmental conditions of the radiator are unchanged, the power of the device is increased, the heat productivity of the radiator is increased, the direction and speed of hot air convection of the radiator in the horizontal and vertical temperature distribution are changed, turbulent flow is formed, and the heat radiation performance is directly influenced.
With the rapid development of wide bandgap semiconductor devices, one of the outstanding advantages of wide bandgap semiconductor devices is high temperature resistance, which makes the ambient temperature of 55 ℃ of the traditional silicon semiconductor required to be raised to more than 100 ℃, and evaporation heat dissipation is a very good heat dissipation method for wide bandgap semiconductor devices because the gas evaporation can reach high temperature gas of more than 100 ℃.
Disclosure of Invention
The invention aims to overcome the defects of the existing heat dissipation method of a natural cooling power device and provides a heat dissipation device with a gas water control unit. The invention integrates the advantages of natural cooling, forced air cooling and water cooling, based on an ideal gas state equation, when the volume is not changed, the pressure intensity is in direct proportion to the thermodynamic temperature, the self heat source of the power device is fully utilized to raise the temperature of the gas in the container, so that the pressure intensity in the container is increased, when the atmospheric pressure in the container is greater than the air pressure, the instability characteristic of the jumping diaphragm is utilized to control the valve, high-pressure airflow is instantly discharged from the outlet of the container, the acceleration direction of the airflow around the radiator is locked, and the purpose of improving the efficiency of the radiator under the natural cooling condition is achieved.
The invention relates to a heat dissipation device with a gas water control unit, which consists of a radiator, a device fixing platform, a gas pressure water control unit and a breathing unit. The air pressure water control unit is installed on one side of the radiator, the device fixing platform is located on the upper portion of the radiator, and the breathing unit is embedded into the radiator.
The air pressure water control unit is installed on one side of the radiator, the air pressure water control unit is isolated from the radiator through heat insulation materials, and the air pressure water control unit is connected with the breathing unit through a water guide pipe and provides water for evaporation and heat dissipation for the breathing unit.
The device fixing platform is used for fixing the power device.
The breathing unit is tightly matched with the radiator.
The breathing unit consists of an expansion chamber, a heat conduction material with a capillary function, an air inlet end sealing cover, a check valve, a segment-shaped jumping diaphragm and a cover-type curved valve.
The expansion chamber is tubular and is made of a material with good heat conduction. The segment-shaped jumping diaphragm covers one end of the expansion chamber, and the joint of the segment-shaped jumping diaphragm and the expansion chamber is sealed. The center of the segment-shaped jumping diaphragm is provided with an exhaust hole, a cover-type curved surface valve is arranged on the exhaust hole, and the cover-type curved surface valve is attached to the inner surface of the segment-shaped jumping diaphragm. The air inlet end sealing cover covers the other end of the expansion chamber and is connected with the expansion chamber in a sealing mode. The air inlet end sealing cover is made of heat insulating materials. The air inlet end sealing cover is provided with a check valve and is provided with an air inlet hole, and the air inlet hole is connected with the inlet end of the check valve. One surface of the segment-shaped jumping membrane facing the expansion chamber is an inner surface, and the other surface of the segment-shaped jumping membrane facing away from the expansion chamber is an outer surface.
The spherical segment jumping diaphragm is applied with pressure larger than a jumping instability point, the spherical segment jumping diaphragm generates displacement mutation when being loaded or unloaded to a certain degree, when the spherical segment jumping diaphragm jumps towards the inside of the expansion chamber, the cover type curved surface valve and the check valve are closed to compress gas in the expansion chamber, and when the spherical segment jumping diaphragm jumps towards the outside of the expansion chamber, the cover type curved surface valve and the check valve are opened to generate airflow, suck air or water and discharge the gas in the expansion chamber. The air inlet hole is matched with the check valve, mixed water vapor is sucked into the expansion chamber, the water vapor entering the expansion chamber is instantaneously expanded under the action of high temperature, the pressure in the expansion chamber is greater than the pressure outside the expansion chamber, and the check valve is closed, so that the expanded gas cannot flow back. And the air inlet end sealing cover made of heat insulating materials isolates the expansion chamber from the external environment, thereby being beneficial to quickly heating the expansion chamber to evaporate the gas. The molecules of the evaporated gas absorb the heat of the radiator, so that the gas expands rapidly to drive the segment-shaped jumping membrane to bounce and take away the heat of the radiator.
The heat conduction material with the capillary function is in a hollow cylinder shape and is installed in the expansion chamber, the outer edge of the hollow cylinder of the heat conduction material is in contact with the inner wall of the expansion chamber, one end of the hollow cylinder of the heat conduction material is connected to the inner side of the sealing cover at the air inlet end, the check valve is arranged in the center of the hollow cylinder of the heat conduction material, when water and air enter the expansion chamber through the check valve, the water is quickly dispersed into small particles through the heat conduction material with the capillary function, and the water is quickly evaporated.
Due to the structural characteristics of the segmental spherical shape of the segmental spherical jumping diaphragm, when pressure greater than the jumping instability point is applied to the segmental spherical jumping diaphragm, the segmental spherical jumping diaphragm loses stability, changes the shape suddenly, generates large deflection at the center of the segmental spherical jumping diaphragm, enables the segmental spherical jumping diaphragm to protrude upwards or descend downwards, and synchronously opens or closes the cover type curved surface valve.
The air inlet end sealing cover is provided with a check valve for controlling the mixed water gas to flow into the expansion chamber in a single direction.
The cover type curved surface valve consists of an exhaust hole and a star-shaped valve plate which are positioned in the center of the spherical segment-shaped jumping membrane; the center of the star-shaped valve plate is a circular valve plate, the radius of the valve plate is larger than that of the exhaust hole, and the valve plate is concentric with the exhaust hole in the spherical segment-shaped jumping membrane. The edge of the valve block is connected with a plurality of soft ropes with equal length, and the other ends of the soft ropes are uniformly distributed along the circumference of the exhaust hole and are adhered to the inner surface of the segment-shaped jumping membrane. The soft rope is used for limiting the moving distance of the valve plate, when the inner surface of the spherical segment-shaped jumping membrane is concave downwards and is in a stable state, the valve plate is limited by the length of the soft rope, the valve plate covers the exhaust hole, and the exhaust hole is closed; when the inner surface of the segment-shaped jumping membrane protrudes upwards and is in a stable state, the valve plate is opened to open the exhaust hole. The cover type curved surface valve is synchronously opened or closed.
When the segment-shaped jumping diaphragm jumps into the expansion chamber, the segment-shaped jumping diaphragm is concave, the cover-type curved valve and the check valve are closed, and the gas in the expansion chamber is compressed; when the segment-shaped jumping diaphragm jumps to the outside of the expansion chamber, the segment-shaped jumping diaphragm protrudes upwards, the cover-type curved valve and the check valve are opened, air flow is generated, air or water is sucked in, and gas in the expansion chamber is discharged.
The air pressure water control unit consists of a water storage chamber, a steam chamber, a water guide pipe, a water injection check valve and an air inlet channel. The steam chamber is located at the upper part of the air pressure water control unit, the water storage chamber is located at the lower part of the air pressure water control unit, the water injection check valve is located at the top of the air pressure water control unit, the bottom of the air pressure water control unit is connected with a water guide pipe, the water guide pipe is communicated with the air pressure water control unit, and the other end of the water guide pipe is communicated with the check valve and the air inlet on the air inlet end sealing cover through an air inlet channel.
When the pressure in the air pressure water control unit is higher than the atmospheric pressure, the water injection check valve is closed, when the pressure in the air pressure water control unit is lower than the atmospheric pressure, the water injection check valve is opened to allow air to enter, and when the air pressure water control unit is free of water, the air can be expanded to absorb heat.
The air pressure water control unit supplies water to the expansion chamber, so that the heat absorption and evaporation of water are realized to take away heat.
The air pressure water control unit absorbs certain heat of the radiator, so that water vapor is generated in a vapor chamber at the upper part of the air pressure water control unit, the pressure in the air pressure water control unit is increased, the flow of water entering the expansion chamber is increased, the evaporation and heat dissipation speed of the water is accelerated, and the initial pressure in the expansion chamber is improved; the water temperature in the air pressure water control unit is increased or decreased along with the temperature of the radiator, and the air pressure water control unit can control the water amount entering the expansion chamber.
The working principle and the working process of the heat dissipation device with the gas water control unit are as follows:
when the power device is operated, the heat sink absorbs a large amount of heat emitted from the power device. Groups of breathing cells in the heat sink rapidly conduct the temperature to the expansion chamber and the heat conducting material with capillary function. The liquid water and the gas carried by the air pressure water control unit are quickly diffused and absorb heat in the heat conduction material with the capillary function through the check valve, the water and the gas are evaporated and expanded due to the heat of the expansion chamber, so that the pressure in the expansion chamber is increased, and the pressure and the temperature are increased under the condition of equal capacity due to the fact that PV (Rt) is increased, so that the quick expansion of the gas is accelerated, wherein P is pressure, V is volume, R is heat conductivity coefficient, and t is temperature. When the pressure intensity is larger than the jump instability point of the spherical-segment-shaped jump membrane, the spherical-segment-shaped jump membrane jumps from a concave shape to a convex shape, the cover-type curved surface valve is opened, the airflow generated when the spherical-segment-shaped jump membrane jumps carries the hot air flow of the expansion chamber to be quickly discharged in the same direction, the hot air flow enables the local air of the radiator to expand, the air density and the air pressure are reduced, the radiator and the peripheral air flow directionally, and cold and hot air convection is formed.
When the spherical segment jumping diaphragm is in a stable state from the concave to the convex, the valve block just opens the exhaust hole, air flow in the expansion chamber is rapidly discharged, the pressure in the expansion chamber is also rapidly reduced, the pressure in the expansion chamber is smaller than the outside pressure, the check valve is opened at the moment, and gas and a small amount of water are sucked into the expansion chamber.
The structure of the spherical segment jumping membrane is determined, and when the spherical segment jumping membrane is turned from a concave shape to a convex shape to a limit degree, the spherical segment jumping membrane automatically rebounds and turns from the convex shape to the concave shape. When the segment-shaped jumping membrane jumps from the convex shape to the concave shape and turns over, the valve plate covers the exhaust hole, the exhaust hole is closed, the inner surface of the segment-shaped jumping membrane acts on the reverse compression of the gas in the expansion chamber, and the check valve is closed. The pressure of the gas inside the expansion chamber is greater than the atmospheric pressure outside the expansion chamber, a process also referred to as a breathing unit inspiration process. The pressure in the expansion chamber is now: the ambient atmospheric pressure and the rebound of the spherical segment jumping diaphragm set the compression pressure of the gas in the expansion chamber as the pressure of the expansion chamber.
When the water and gas absorbed into the expansion chamber absorb heat to evaporate and expand, the pressure in the expansion chamber is increased. The pressure in the expansion chamber is now: the ambient atmospheric pressure, the water evaporation expansion pressure, the gas compression pressure of the spherical segment jumping diaphragm to the expansion chamber is equal to the pressure in the expansion chamber;
when the segmental spherical jumping diaphragm reaches the jumping instability point pressure, the water evaporation expansion pressure in the expansion chamber is as follows: the water evaporation expansion pressure is equal to the jumping instability point pressure of the spherical-segment jumping diaphragm-the ambient atmospheric pressure-the gas compression pressure of the spherical-segment jumping diaphragm rebounding to the expansion chamber;
the jumping instability point pressure of the spherical-segment-shaped jumping diaphragm is equal to the pressure in the expansion chamber.
The pressure in the steam chamber is in direct proportion to the temperature of the radiator, so that the higher the temperature of the radiator is, the more the evaporated gas is, the higher the pressure is, therefore, the flow of the water output by the pressure control water unit is transmitted by the pressure of the steam chamber, the more the water is provided for the expansion chamber, the higher the steam density in the expansion chamber is, the more the temperature of the absorption radiator is, the larger the flow of the discharged gas is, and the better the heat dissipation effect is. On the contrary, the lower the temperature of the radiator is, the lower the pressure in the steam chamber of the air pressure water control unit is, the output water quantity to the expansion chamber is synchronously reduced, when the temperature of the radiator is reduced, the pressure in the steam chamber of the air pressure water control unit is equal to the environmental pressure, the water supply is stopped, the radiator enters the natural heat dissipation, and only air enters the expansion chamber at the moment. Therefore, the heat dissipation water is greatly reduced, and meanwhile, the purpose of saving water can be achieved by reasonably designing the capacity of a steam chamber in the air pressure water control unit.
In order to ensure the efficiency of the heat dissipation device and reduce the water consumption, the heat dissipation device dissipates heat through four processes:
1. when the radiator is at low temperature, the heat radiating device enters a natural cooling process;
2. the temperature of the radiator is gradually increased, the temperature of water in the air pressure water control unit is synchronously increased, when the pressure in a steam chamber of the air pressure water control unit is not more than the ambient pressure, only air is sucked into the expansion chamber, and the radiator heats, expands and radiates the air through the thermal expansion chamber;
3. when the temperature of the radiator rises, the expansion pressure of gas in the steam chamber of the air pressure water control unit is increased, the expansion chamber sucks air and water, the radiator heats the water and the air through the thermal expansion chamber, the water and the gas absorb heat, evaporate and expand, and when the internal pressure of the expansion chamber reaches the pressure of the jump instability point of the spherical segment jumping membrane, the heat absorption gas in the expansion chamber is discharged for heat dissipation. The water supply quantity of the air pressure water control unit to the expansion chamber is in direct proportion to the temperature of the radiator, the higher the temperature of the radiator is, the larger the water supply quantity of the air pressure water control unit to the expansion chamber is, and otherwise, the lower the temperature of the radiator is, the smaller the water supply quantity of the air pressure water control unit to the expansion chamber is;
4. the temperature of the radiator is reduced, the water supply is stopped when the temperature of the air pressure water control unit is synchronously reduced, the radiator adds air, the air is thermally expanded to dissipate heat, and the natural cooling process of the radiator is gradually carried out;
the heat dissipation capacity is related to the water consumption, heat dissipation temperature, expansion chamber capacity, exhaust gas quantity and gas flow rate, and the gas flow rate u is related to the pressure p of the expansion chambermExpansion chamber volume V related to cover type curved valve exhaust hole area sgThe size is independent of the gas flow velocity u and related to the flow, and the larger the volume is, the larger the exhaust flow is, and the longer the exhaust time is. The smaller the capacity of the expansion chamber is, the smaller the exhaust flow is, the shorter the heating time is, and the higher the frequency of the breathing unit for completing one breathing and inhaling process is;
the air pressure water control, the cover type curved surface valve and the gas expansion diaphragm jump type heat dissipation device are devices integrating mechanical motion, aerodynamic force and thermal power, and have the advantages of water cooling, forced air cooling and natural cooling. Due to the heat dissipation amount WRThe exhaust frequency F of the expansion chamber and the temperature T of the radiatorcLength of time tsWater amount LwExpansion chamber volume VgAnd segmental jump diaphragm instability point pressure pmRelated, therefore, there is a heat dissipation amount WR：
WR＝f(ts，Vg，Tc，Lw，p1F); due to the pressure p of the expansion chamber1The pressure of the expansion chamber is equal to the instability point pressure of the spherical-segment-shaped jumping diaphragm.
The invention has the following characteristics:
● water collection, forced wind, natural heat dissipation: when the expansion chamber sucks water, water evaporation cooling is carried out, the process is the same as water cooling heat dissipation, when the expansion chamber evaporates and exhausts gas, the process is the same as forced air cooling heat dissipation, and the process that the radiator is placed in a natural environment for heat dissipation and natural cooling, so that the heat dissipation of the advantages of the expansion chamber is integrated;
● when natural cooling, the radiator temperature is lower than the critical point of temperature control, the invention adopts air heating expansion to radiate, only when the radiator temperature is higher than the critical point of temperature control, the water evaporation radiation is started, thus the water consumption is less;
● compared with natural air cooling with the same volume, it does not consume extra power, and improves heat dissipation capability, thereby improving power output density;
● the heat dissipation area is large;
● has simple mechanical structure, high reliability and low cost;
drawings
FIG. 1 is a view showing the structure of a heat dissipating device according to the present invention;
FIG. 2 is a schematic view of a segment-shaped jumping diaphragm;
fig. 3 is a schematic diagram of the structural principle of a spherical segment jumping diaphragm cover type curved surface valve switch.
Detailed Description
The invention is further described below with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the heat dissipating device with a gas water control unit of the present invention is composed of a heat sink 7, a device fixing platform 18, a gas pressure water control unit 14, and a breathing unit. The air pressure water control unit 14 is arranged on one side of the radiator 7, the device fixing platform 18 is positioned on the upper part of the radiator 7, and the breathing unit is embedded in the radiator 7. The power device requiring heat dissipation is fixed to the device fixing platform 18.
The air pressure water control unit 14 is arranged on one side of the radiator 7 and is isolated from the radiator 7 through a heat insulating material arranged between the air pressure water control unit 14 and the radiator 7. The air pressure water control unit 14 is communicated with the breathing unit through a water guide pipe and provides water for evaporation and heat dissipation for the breathing unit;
the device fixing platform 18 is positioned at the upper part of the radiator 7, and the power device is fixed on the device fixing platform 18.
The breathing unit is embedded in the radiator 7 and is tightly matched with the radiator 7.
The breathing unit consists of an expansion chamber 4, a heat conduction material 17 with a capillary function, an air inlet 13, an air inlet end sealing cover 1, a check valve 2, a spherical segment jumping diaphragm 5 and a cover type curved surface valve.
As shown in fig. 2, the expansion chamber 4 is tubular and made of a material with good heat conductivity. The segment-shaped jumping diaphragm 5 covers one end of the expansion chamber 4, and the joint of the segment-shaped jumping diaphragm and the expansion chamber 4 is sealed. An exhaust hole 15 is formed in the center of the segment-shaped jumping membrane 5, a cover-type curved surface valve is mounted on the exhaust hole 15, and the cover-type curved surface valve is attached to the inner surface of the segment-shaped jumping membrane 5. The air inlet end sealing cover 1 covers the other end of the expansion chamber 4 and is connected with the expansion chamber 4 in a sealing mode. The air inlet end sealing cover 1 is made of heat insulating materials. The air inlet end sealing cover 1 is provided with a check valve 2 and an air inlet 13. The air inlet 13 is connected with the inlet end of the check valve 2. One surface of the segment-shaped jumping diaphragm 5 facing the inner side of the expansion chamber 4 is an inner surface, and the other surface of the segment-shaped jumping diaphragm facing away from the inner side of the expansion chamber 4 is an outer surface. The air inlet end sealing cover 1 is provided with a check valve 2 which is provided with an air inlet 13. The air inlet 13 is connected with the inlet end of the check valve 2. The pressure greater than the jumping instability point is applied to the segment-shaped jumping diaphragm, the segment-shaped jumping diaphragm 5 can be displaced and suddenly changed when being loaded or unloaded to a certain degree, when the segment-shaped jumping diaphragm 5 jumps into the expansion chamber 4, the gas in the expansion chamber 4 is compressed, and when the segment-shaped jumping diaphragm 5 jumps out of the expansion chamber 4, the gas flow is generated, the air or the water is sucked in, and the gas in the expansion chamber 4 is discharged. The air inlet end sealing cover 1 covers the other end of the expansion chamber 4 and is connected with the expansion chamber 4 in a sealing mode. The air inlet end sealing cover 1 is made of heat insulating materials. The mixed water vapor is sucked into the expansion chamber 4 through the air inlet 13 and the check valve 2, the water vapor entering the expansion chamber 4 is expanded instantly under the action of high temperature, the pressure in the expansion chamber 4 is higher than the pressure outside the expansion chamber 4, and the check valve 2 is closed, so that the expanded gas cannot flow back. And the heat-insulating material of the air inlet end sealing cover 1 can isolate the temperature of the expansion chamber 4 from the external environment temperature, thereby being beneficial to the rapid heating gas evaporation of the expansion chamber 4. The evaporated gas molecules absorb the heat of the radiator 7, so that the gas expands rapidly to drive the segment-shaped jumping diaphragm 5 to bounce and take away the heat of the radiator 7. The heat conduction material 17 with the capillary function is in a hollow cylinder shape and is installed in the expansion chamber 4, the outer edge of the hollow cylinder of the heat conduction material 17 is in contact with the inner wall of the expansion chamber 4, one end of the hollow cylinder is connected with the inner side of the air inlet end sealing cover 1, the check valve 2 is arranged at the central position of the hollow cylinder of the heat conduction material 17, when water and air enter the expansion chamber 4 through the check valve 2, the water is quickly dispersed into small particles through the heat conduction material 17 with the capillary function, and the water is quickly evaporated.
Due to the unique spherical segment structure of the spherical segment-shaped jumping diaphragm 5, when pressure greater than the jumping instability point is applied to the spherical segment-shaped jumping diaphragm 5, the spherical segment-shaped jumping diaphragm 5 loses stability, the shape is suddenly changed, large deflection is generated in the center of the spherical segment-shaped jumping diaphragm 5, the spherical segment-shaped jumping diaphragm 5 protrudes upwards or downwards, and the cover-type curved surface valve is synchronously opened or closed.
When the segment-shaped jumping diaphragm 5 jumps into the expansion chamber 4, the segment-shaped jumping diaphragm 5 is concave, the cover-type curved valve and the check valve 2 are closed, and the gas in the expansion chamber 4 is compressed; when the segment-shaped jumping diaphragm 5 jumps to the outside of the expansion chamber 4, the segment-shaped jumping diaphragm 5 protrudes upwards, the cover-type curved valve and the check valve 2 are opened, air flow is generated, air or water is sucked in, and gas in the expansion chamber 4 is discharged.
The air inlet end sealing cover 1 is provided with a check valve 2 for controlling the mixed water vapor to flow into the expansion chamber 4 in a single direction.
As shown in figure 3, the cover type curved surface valve consists of an exhaust hole 15 and a star-shaped valve plate which are positioned in the center of the spherical segment-shaped jumping membrane 5. The center of the star-shaped valve plate is a circular valve plate 6, the radius of the valve plate 6 is larger than that of the vent hole 15, the valve plate 6 is concentric with the vent hole 15 on the spherical-segment-shaped jumping membrane 5, the edge of the valve plate 6 is connected with a plurality of soft ropes 16 with equal length, and the other ends of the soft ropes 16 are uniformly adhered to the inner surface of the spherical-segment-shaped jumping membrane 5 along the circumference of the vent hole 15. The soft rope 16 is used for limiting the moving distance of the valve plate, the inner surface of the segment-shaped jumping membrane 5 is concave downwards, and when the valve plate 6 is in a stable state, the length of the soft rope 16 is limited, the vent hole 15 is covered, and the vent hole is closed; when the inner surface of the segment-shaped jumping membrane 5 protrudes upwards and is in a stable state, the valve plate 6 is opened, and the exhaust hole 15 is opened. The cover type curved surface valve is synchronously opened or closed.
When the segment-shaped jumping diaphragm 5 jumps into the expansion chamber 4, the segment-shaped jumping diaphragm 5 is concave, the cover-type curved valve and the check valve 2 are closed, and the gas in the expansion chamber 4 is compressed; when the segment-shaped jumping diaphragm 5 jumps to the outside of the expansion chamber 4, the segment-shaped jumping diaphragm 5 protrudes upwards, the cover-type curved valve and the check valve 2 are opened, air flow is generated, air or water is sucked in, and gas in the expansion chamber 4 is discharged.
The air pressure water control unit 14 is composed of a water storage chamber 9, a steam chamber 10, a water guide pipe 12, a water injection check valve 11 and an air inlet channel 8, wherein the steam chamber 10 is located at the upper part of the air pressure water control unit 14, the water storage chamber 9 is located at the lower part of the air pressure water control unit 14, the water injection check valve 11 is located at the top of the air pressure water control unit 14, the water guide pipe 12 is connected to the bottom of the air pressure water control unit 14 and communicated with the air pressure water control unit 14, and the other end of the water guide pipe 12 is connected with the check valve 2 and the air inlet hole 13 on the air inlet end sealing cover 1 through the.
When the pressure in the air pressure water control unit 14 is higher than the atmospheric pressure, the water injection check valve 11 is closed, when the pressure in the air pressure water control unit 14 is lower than the atmospheric pressure, the water injection check valve 11 is opened to allow air to enter, and when the air pressure water control unit 14 is anhydrous, the air can expand to absorb heat.
Claims (3)
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| CN201711136648.1A CN108172555B (en) | 2017-11-15 | 2017-11-15 | Heat dissipation device with gas water control unit |
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