Active control evaporative cooling system

Abstract

The application provides an active control consumptive evaporative cooling system, which comprises a cooling loop, a heat exchange device arranged on the cooling loop, a first thermometer arranged on the inlet side of the heat exchange device, an evaporative heat exchanger, a cavity formed in the evaporative heat exchanger, a consumptive heat sink arranged in the cavity, a first storage device, a control valve and a controller. The first storage device is connected with the cavity through the control valve and stores a supplementary working medium. The controller is electrically connected with the first thermometer and is used for obtaining the boiling point of the consumptive heat sink according to the air pressure in the cavity. When the temperature measured by the first thermometer is lower than the boiling point of the consumptive heat sink, the controller controls the control valve to open and the supplementary working medium is supplied into the cavity to reduce the boiling point of the liquid in the cavity. When the temperature of the liquid in the cooling loop is relatively low, the liquid in the cavity can also evaporate to take away the heat of the cooling liquid, and the heat dissipation capacity is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of aircraft heat dissipation technology, and in particular to an active control consumable evaporative cooling system. Background Technology

[0002] As aircraft develop towards higher altitudes and higher speeds, and airborne electronic equipment develops towards higher energy levels, airborne equipment faces more stringent thermal environments and airborne heat dissipation requirements. The heat dissipation requirements of aircraft heat sources far exceed the aircraft's own airborne heat sink capacity, and new technical means urgently need to be developed to solve the problem of insufficient heat sinks.

[0003] In related technologies, the boiling and evaporation of liquid consumable heat sinks is often used to absorb heat from heat exchangers. However, the heat generation of the heat-generating equipment varies under different operating conditions. When the coolant carrying heat from the heat-generating equipment flows to the heat exchanger, its temperature may not be high enough to boil and evaporate the liquid consumable heat sink, making it difficult to effectively cool the coolant in a timely manner. Simultaneously, because the heat exchange between the consumable heat sink and the coolant is concentrated at the heat exchange surface of the heat exchanger, air bubbles generated by the consumable heat sink often adhere to this surface. These air bubbles obstruct heat exchange between the liquid consumable heat sink and the coolant within the heat exchanger, further reducing the heat exchange efficiency. In other words, some consumable heat sinks experience a decrease in heat dissipation capacity due to changes in coolant temperature or air bubbles adhering to the heat exchange surface, preventing them from fully utilizing their heat dissipation capabilities. Summary of the Invention

[0004] This invention provides an active control consumable evaporative cooling system for improving the heat dissipation capacity of consumable heat sinks.

[0005] This invention provides an active-controlled consumable evaporative cooling system, comprising: A cooling circuit is provided with a heat exchange device. A first thermometer is provided on the inlet side of the heat exchange device. The first thermometer is used to measure the temperature of the coolant flowing into the heat exchange device. An evaporative heat exchanger has an internal cavity containing a consumable heat sink, and the heat exchange device is placed inside the cavity. A first storage device, internally storing a supplementary working fluid, wherein the boiling point of the mixture formed by the supplementary working fluid and the consumable heat sink is lower than that of the consumable heat sink, and the first storage device is connected to the cavity via a control valve; and The controller is electrically connected to the first thermometer. The controller is used to obtain the boiling point of the consumable heat sink based on the air pressure in the cavity. When the temperature measured by the first thermometer is lower than the boiling point of the consumable heat sink, the controller controls the control valve to open and introduce the supplementary working fluid into the cavity to lower the boiling point of the liquid in the cavity.

[0006] In one embodiment, the consumable heat sink is deionized water, and the replenishing working fluid is ethanol or methanol.

[0007] In one embodiment, a pressure control device is provided at the exhaust port of the evaporative heat exchanger. The pressure control device is used to control the exhaust volume at the exhaust port to increase or decrease the pressure of the gas in the cavity, thereby adjusting the boiling point of the liquid in the cavity.

[0008] In one embodiment, the evaporative heat exchanger is further connected to a second storage device, which stores consumable heat sink. A liquid supply pump is provided between the second storage device and the evaporative heat exchanger to pump the consumable heat sink into the cavity.

[0009] In one embodiment, a filter and a flow meter are further provided between the evaporative heat exchanger and the second storage device.

[0010] In one embodiment, a porous component is provided inside the cavity, through which consumable heat sink flows into the cavity. The porous component is located below the heat exchange device, so that the pumped liquid consumable heat sink flows into the cavity evenly and promotes the removal of consumable heat sink bubbles attached to the heat exchange surface of the heat exchange device from the heat exchange device.

[0011] In one embodiment, the porous component has a liquid inlet and a plurality of liquid outlets, each of which is connected to the liquid inlet. Some of the liquid outlets face downwards from the bottom surface of the heat exchange device, while others face downwards from the side surface of the heat exchange device.

[0012] In one embodiment, a liquid level measuring device is provided inside the cavity to measure the liquid level height inside the cavity; when the liquid level height is lower than a first height, the controller controls the liquid supply pump to start, replenishing the cavity with consumable heat sink from the second storage device; when the liquid level height is higher than a second height, the controller controls the liquid supply pump to stop; wherein, the first height is less than the second height, and the first height is greater than the top surface height of the heat exchange device.

[0013] In one embodiment, a vent valve is provided at the top of the second storage device, a level gauge is provided inside the second storage device, and a second filling / draining valve is provided at the bottom of the second storage device.

[0014] In one embodiment, the cooling circuit includes a heating section arranged near the heating device to absorb heat from the heating device using coolant in the cooling circuit. The cooling circuit also includes an onboard heat sink cooling system connected in parallel with the heat exchange device. The outlet side of the heating section is connected to the onboard heat sink cooling system or to the heat exchange device. When the heat dissipation capacity of the onboard heat sink cooling system is sufficient, the outlet of the heating section is connected to the onboard heat sink cooling system, and the onboard heat sink cooling system is used to cool the coolant. When the heat dissipation capacity of the onboard heat sink cooling system is insufficient, the outlet of the heating section is connected to the heat exchange device, and the evaporative heat exchanger is used to cool the coolant in the heat exchange device.

[0015] Compared with the prior art, the advantage of this invention is that by placing the heat exchange device in the cooling circuit within the cavity of the evaporative heat exchanger, heat exchange between the consumable heat sink in the cavity and the coolant in the heat exchange device can be achieved. When the consumable heat sink in the cavity is heated to its boiling point, it will boil, thereby rapidly absorbing the temperature of the coolant in the heat exchange device and cooling the coolant in the cooling circuit. Because a first thermometer is installed on the inlet side of the heat exchange device, the temperature of the coolant entering the heat exchange device can be measured. When the coolant temperature is lower than the boiling point of the consumable heat sink, simply heating the consumable heat sink in the cavity with the coolant cannot cause it to boil and evaporate. At this time, the consumable heat sink cannot quickly remove the temperature of the coolant. In this application, a first storage device storing a supplementary working fluid is provided. When the coolant temperature is lower than the boiling point of the consumable heat sink, a controller opens the control valve between the first storage device and the cavity, thereby filling the cavity with the supplementary working fluid, forming a mixture of the supplementary working fluid and the consumable heat sink in the cavity. Because the supplementary working fluid can mix with the consumable heat sink to form a low-boiling-point mixture, the boiling point of the resulting mixture will rapidly decrease after the supplementary working fluid is filled into the cavity. This allows the solution in the cavity to boil even when the coolant temperature is low. In other words, in this application, when the coolant is at a high temperature, cooling can be achieved directly through the evaporation of the consumable heat sink. When the coolant temperature is low, cooling can be achieved by the boiling of the mixture formed by the consumable heat sink and the supplementary working fluid, which has a boiling point lower than that of the consumable heat sink, thus improving the heat dissipation capacity of the consumable heat sink under low-temperature coolant conditions. Attached Figure Description

[0016] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the active control evaporative cooling system in an embodiment of the present invention; Figure 2 This is a top view of the porous component in an embodiment of the present invention; Figure 3 This is a schematic diagram of the front view of the porous component in an embodiment of the present invention.

[0018] Figure label: 1. Second storage device; 2. Second filling / draining valve; 3. Vent valve; 4. Level gauge; 5. Filter device; 6. Liquid supply pump; 7. Flow meter; 8. Second thermometer; 9. Evaporative heat exchanger; 10. Liquid level measuring device; 11. Pressure control device; 12. Porous component; 13. Heat exchange device; 14. First filling / draining valve; 15. First check valve; 16. Second check valve; 17. Drive device; 18. Heating device; 19. Liquid inlet; 20. Liquid outlet; 21. Onboard heat sink cooling system; 22. Three-way valve; 23. First thermometer; 24. First storage device; 25. Control valve; 26. Filling valve. Detailed Implementation

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] This invention provides an active control consumable evaporative cooling system, comprising: a cooling circuit, an evaporative heat exchanger 9, and a first storage device 24. The cooling circuit circulates coolant and flows through high-temperature heat-generating components, utilizing the coolant to remove heat from the heat-generating components and prevent overheating.

[0021] A heat exchange device 13 is installed on the cooling circuit and placed in the cavity inside the evaporative heat exchanger 9. Because the cavity contains a consumable heat sink, the consumable heat sink in the cavity will exchange heat with the heat exchange device 13, thereby transferring the heat of the coolant to the consumable heat sink.

[0022] Understandably, if the coolant temperature in the cooling circuit is high, it can heat the consumable heat sink to boiling. This is because the liquid absorbs a large amount of heat during the process of boiling and transforming into gas, resulting in higher heat dissipation efficiency. However, if the coolant temperature is lower than the boiling point of the consumable heat sink, even if the heat sink is heated to the same temperature as the coolant, it will not boil. In this case, the heat dissipation effect will be significantly lower than that at boiling point.

[0023] To address the issue of low heat dissipation efficiency at low coolant temperatures, this application also includes a first storage device 24 connected to the cavity. The first storage device 24 stores a supplementary working fluid, which can mix with the consumable heat sink to form a low-boiling-point mixture. In other words, under the same pressure conditions, the boiling point of the pure consumable heat sink is higher than the boiling point of the mixture formed by the consumable heat sink and the supplementary working fluid.

[0024] A first thermometer 23 is installed at the inlet of the heat exchanger 13 to measure the temperature of the coolant flowing into the heat exchanger 13. When the temperature measured by the first thermometer 23 is higher than the boiling point of the consumable heat sink, the controller closes the control valve 25 located between the first storage device 24 and the cavity, thereby disconnecting the first storage device 24 from the cavity. That is, no supplementary working fluid is added to the cavity through the first storage device 24, and the consumable heat sink in the cavity boils directly under the action of the high-temperature coolant in the heat exchanger 13. When the temperature measured by the first thermometer 23 is lower than the boiling point of the consumable heat sink, the controller opens the control valve 25 located between the first storage device 24 and the cavity, adding supplementary working fluid to the cavity through the first storage device 24. The liquid in the cavity becomes a mixture of the consumable heat sink and the supplementary working fluid, and the boiling point of the mixture is lower than that of the consumable heat sink. This lowers the boiling point of the liquid in the cavity, allowing for faster absorption of heat from the coolant in the heat exchanger 13.

[0025] In some implementations, the consumable heat sink is deionized water, and the replenishing medium is ethanol or methanol. When the replenishing medium is added to the consumable heat sink, the liquid inside the cavity is a mixture of deionized water and the replenishing medium, and the boiling point of the mixture is lower than that of deionized water.

[0026] If the supplementary working fluid is ethanol, the boiling point of the mixture can be adjusted to a minimum of 78.15℃ under standard atmospheric pressure by adjusting the ratio of ethanol to deionized water, which is far lower than the boiling point of deionized water at standard atmospheric pressure (100℃). This greatly reduces the difficulty of boiling the liquid in the cavity.

[0027] If the working fluid is methanol, the boiling point of the mixture can be adjusted to about 64.5-64.7℃ under standard atmospheric pressure by adjusting the ratio of methanol to deionized water, which also greatly reduces the difficulty of boiling the liquid in the cavity.

[0028] See Figure 1 As shown, in order to meet the replenishment of the working medium in the first storage device 24, a filling valve 26 is also provided on the first storage device 24, through which the working medium can be added to the first storage device 24.

[0029] See Figure 1As shown, in some cases, a pressure control device 11 is provided at the exhaust port of the evaporative heat exchanger 9. The pressure control device 11 controls the exhaust volume at the exhaust port to increase or decrease the gas pressure in the cavity, thereby adjusting the boiling point of the liquid in the cavity. That is to say, in this application, not only is the boiling point of the liquid in the cavity lowered by adding a supplementary medium to the cavity to form a mixture, but the boiling point of the liquid in the cavity can also be changed by lowering the gas pressure in the cavity.

[0030] For example, when the coolant temperature is low, the exhaust speed at the vent can be increased by a pressure control device, thereby reducing the air pressure inside the cavity and further lowering the boiling point of the liquid in the cavity, thus improving the heat absorption efficiency of the consumable heat sink for the coolant. Conversely, if the temperature of the consumable heat sink outside the heat exchanger is too high, directly exceeding its boiling point, a pressure control device can be used to pressurize it, increasing the air pressure inside the cavity and raising the boiling point of the consumable heat sink. This prevents the consumable heat sink from boiling before it comes into contact with the heat exchanger surface, ensuring that boiling mainly occurs at the heat exchanger surface, thus improving the utilization rate of the consumable heat sink. By combining these two methods of adjusting the boiling point, a better cooling effect can be achieved.

[0031] See Figure 1 As shown, in some implementations, a second thermometer 8 is also provided in the cavity. The second thermometer 8 is used to measure the temperature of the consumable heat sink in the cavity. When the temperature of the consumable heat sink measured by the second thermometer 8 is higher than or equal to the boiling point of the consumable heat sink, the pressure control device can be used to appropriately pressurize and raise the boiling point of the consumable heat sink in the cavity, so as to prevent the consumable heat sink from boiling before contacting the heat exchange surface of the heat exchange device.

[0032] It is understood that the pressure control device 11 in this application can also obtain the air pressure in the cavity. The pressure control device 11 can be electrically connected to the controller so that the controller can obtain the current air pressure in the cavity. In this way, the boiling point of the consumable heat sink under the current air pressure can be determined by combining the boiling point-pressure curve of the consumable heat sink. When the boiling point of the consumable heat sink under the current air pressure is higher than the temperature measured by the first thermometer 23, the control valve 25 is opened to add the supplementary working fluid into the cavity and lower the boiling point of the liquid in the cavity.

[0033] See Figure 1 As shown, in some implementations, the evaporative heat exchanger 9 is also connected to a second storage device 1, which stores consumable heat sink. A liquid supply pump 6 is provided between the second storage device 1 and the evaporative heat exchanger 9 to pump the consumable heat sink into the cavity. That is to say, in this application, the consumable heat sink is replenished to the evaporative heat exchanger 9 through the second storage device 1 to avoid insufficient consumable heat sink in the cavity.

[0034] See Figure 1 As shown, in some implementations, a filter device 5 and a flow meter 7 are also provided between the evaporator heat exchanger 9 and the second storage device 1. The flow meter 7 can monitor the amount of consumable heat sink entering the cavity from the second storage device 1, thereby allowing for accurate control of the consumable heat sink flow rate by adjusting the power of the liquid supply pump 6 when the flow rate is inappropriate. This avoids insufficient or excessive consumable heat sink being introduced into the cavity. By providing a filter device 5 between the evaporator heat exchanger 9 and the second storage device 1, impurities in the second storage device 1 can be prevented from flowing into the evaporator heat exchanger 9 and contaminating it.

[0035] See Figure 1 As shown, in some implementations, a first charge / discharge valve 14 is also provided at the bottom of the evaporative heat exchanger 9. When the aircraft is on the ground, the liquid supply pump 6 can be shut off, and the first charge / discharge valve 14 can be connected to a consumable heat sink storage device with a capacity larger than that of the second storage device 1. The large-capacity consumable heat sink storage device provides consumable heat sink to the evaporative heat exchanger 9, avoiding the consumption of consumable heat sink in the second storage device 1. The first charge / discharge valve 14 can be used to fill and empty the consumable heat sink inside the evaporative heat exchanger 9.

[0036] See Figures 1 to 3 As shown, in some implementations, a porous component 12 is provided inside the cavity. The consumable heat sink flows into the cavity through the porous component 12. The porous component 12 is located below the heat exchange device 13 and promotes the detachment of consumable heat sink bubbles attached to the heat exchange surface of the heat exchange device 13. The heat exchange surface of the heat exchange device 13 refers to the surface of the heat exchange device 13 that can contact the consumable heat sink. When the consumable heat sink contacts the heat exchange surface, it absorbs heat from the heat exchange device 13, thereby lowering the temperature of the coolant in the heat exchange device 13 and achieving cooling of the coolant.

[0037] In other words, the porous component 12 not only allows the consumable heat sink to be introduced into the cavity to replenish it, but also, because the porous component 12 is located below the heat exchange device 13, the liquid consumable heat sink can be propelled towards the bottom surface of the heat exchange device 13 by the power provided by the liquid supply pump 6. This removes the bubbles generated by the boiling of the consumable heat sink from the heat exchange device 13, allowing more liquid consumable heat sink to come into contact with the high-temperature surface of the heat exchange device 13. By setting the porous component 12, the heat exchange efficiency between the consumable heat sink and the heat exchange device 13 can be improved.

[0038] See Figures 1 to 3As shown, in some implementations, the porous component 12 has a liquid inlet 19 and several liquid outlets 20, each of which is connected to the liquid inlet 19. Some of the liquid outlets 20 face downwards from the bottom surface of the heat exchange device 13, while others face downwards from the side surface of the heat exchange device 13. In other words, the porous component 12 can not only spray liquid consumable heat sink onto the bottom surface of the heat exchange device 13, but also onto the side surface, thereby removing bubbles adhering to the heat exchange surface of the heat exchange device 13 and improving its heat dissipation capacity. As for the top surface of the heat exchange device 13, the bubbles generated therein tend to rise automatically; that is, the bubbles at the top surface of the heat exchange device 13 are generally much smaller than those at the bottom and sides. Therefore, supplementing the top surface of the heat exchange device 13 with consumable heat sink is obviously less effective than the heat exchange effect achieved by the porous component 12 located below the heat exchange device 13 in this application.

[0039] In some implementations, the outlets 20 are arranged in rows and columns, with a fixed spacing between adjacent rows and columns, and the spacing between adjacent rows is equal to the spacing between adjacent columns. This achieves uniform spacing of the outlets 20. A guide vane structure is provided inside the porous component 12 to guide the liquid consumable heat sink flowing in from the inlet 19 into each outlet 20. To ensure that the liquid consumable heat sink discharged from the porous component 12 can disperse air bubbles on the four sides of the heat exchange device 13, the porous component 12 can be made longer and wider, so that the length sides of the porous component 12 extend outwards to the ends of the length of the heat exchange device 13, and the width sides of the porous component 12 extend outwards to the ends of the width of the heat exchange device 13.

[0040] In some implementations, a liquid level measuring device 10 is installed inside the cavity. This device measures the liquid level height within the cavity. When the liquid level is lower than a first height, the controller activates the liquid supply pump 6 to replenish the cavity with consumable heat sink from the second storage device 1. When the liquid level is higher than a second height, the controller deactivates the liquid supply pump 6. The first height is less than the second height, but greater than the top surface height of the heat exchange device. In other words, the coordination of the liquid level measuring device 10 and the liquid supply pump 6 maintains the liquid level in the cavity between the first and second heights, ensuring that the consumable heat sink completely submerges the heat exchange device 13. This increases the contact area between the heat exchange device 13 and the consumable heat sink, maintaining a high level of heat dissipation from the consumable heat sink to the heat exchange device 13.

[0041] See Figure 1As shown, in some implementations, a vent valve 3 is provided at the top of the second storage device 1, a level gauge 4 is provided inside the second storage device 1, and a second filling / draining valve 2 is provided at the bottom of the second storage device 1. The vent valve 3 at the top of the second storage device 1 allows for the smooth discharge of consumable heat sink into the second storage device 1. The level gauge 4 inside the second storage device 1 allows for timely determination of the amount of consumable heat sink stored within the second storage device 1. The second filling / draining valve 2 at the bottom of the second storage device 1 allows for convenient replenishment or discharge of consumable heat sink into the second storage device 1.

[0042] See Figure 1 As shown, in some implementations, the cooling circuit includes a heating section arranged near the heating device 18 to absorb heat from the heating device 18 using coolant in the cooling circuit. The cooling circuit also includes an onboard heat sink cooling system 21 connected in parallel with the heat exchange device 13. The outlet side of the heating section is connected to the onboard cooling system or to the heat exchange device 13.

[0043] When the heat dissipation capacity of the onboard heat sink cooling system 21 is sufficient, the outlet of the heating section is connected to the onboard heat sink cooling system 21, and the onboard heat sink cooling system 21 is used to cool the coolant. When the heat dissipation capacity of the onboard heat sink cooling system 21 is insufficient, the outlet of the heating section is connected to the heat exchange device 13, and the evaporative heat exchanger 9 is used to cool the coolant in the heat exchange device 13.

[0044] In other words, the active control consumable evaporative cooling system in this application has two systems for cooling the coolant in the cooling circuit. Among them, the on-board heat sink cooling system 21 can be a cooling system that uses a different heat sink (such as fuel) than the heat sink in the evaporative heat exchanger 9 for cooling. The heat dissipation capacity of the on-board heat sink cooling system 21 can be judged based on the amount of heat sink remaining in the on-board cooling system. When the amount of heat sink remaining in the on-board cooling system is lower than the set safety threshold, it is judged that the heat dissipation capacity of the on-board cooling system is insufficient. At this time, the outlet of the heating section is connected to the heat exchange device 13, so that the coolant flows through the heat exchange device 13 and exchanges heat with the consumable heat sink in the evaporative heat exchanger 9, thereby reducing the temperature of the coolant.

[0045] See Figure 1 As shown, in some implementations, a three-way valve 22 is provided at the outlet of the heating section. One outlet of the three-way valve 22 is connected to the inlet of the heat exchange device 13, and the other outlet of the three-way valve 22 is connected to the inlet of the onboard heat sink cooling system 21, so that the heat exchange device 13 and the onboard heat sink cooling system 21 are connected in parallel.

[0046] A first check valve 15 is installed on the outlet side of the heat exchanger 13 to prevent coolant backflow, and a second check valve 16 is installed on the outlet side of the onboard heat sink cooling system 21 to prevent coolant backflow. See also Figure 1 As shown, a drive device 17 is provided on the inlet side of the heating device 18 in the cooling circuit. The drive device 17 can drive the flow of coolant in the cooling circuit to realize the circulation of coolant.

[0047] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An active-controlled consumable evaporative cooling system, characterized in that, It includes: A cooling circuit is provided with a heat exchange device. A first thermometer is provided on the inlet side of the heat exchange device. The first thermometer is used to measure the temperature of the coolant flowing into the heat exchange device. An evaporative heat exchanger has an internal cavity containing a consumable heat sink, and the heat exchange device is placed inside the cavity. A first storage device, internally storing a supplementary working fluid, wherein the boiling point of the mixture formed by the supplementary working fluid and the consumable heat sink is lower than that of the consumable heat sink, and the first storage device is connected to the cavity via a control valve; and The controller is electrically connected to the first thermometer. The controller is used to obtain the boiling point of the consumable heat sink based on the air pressure in the cavity. When the temperature measured by the first thermometer is lower than the boiling point of the consumable heat sink, the controller controls the control valve to open and introduce the supplementary working fluid into the cavity.

2. The active-controlled consumable evaporative cooling system according to claim 1, characterized in that, The consumable heat sink is deionized water, and the replenishing working fluid is ethanol or methanol.

3. The active control consumable evaporative cooling system according to claim 1, characterized in that, A pressure control device is provided at the exhaust port of the evaporator heat exchanger. The pressure control device is used to control the exhaust volume at the exhaust port to increase or decrease the pressure of the gas in the cavity, thereby adjusting the boiling point of the liquid in the cavity.

4. The active-controlled consumable evaporative cooling system according to claim 1, characterized in that, The evaporative heat exchanger is also connected to a second storage device, which stores consumable heat sink. A liquid supply pump is provided between the second storage device and the evaporative heat exchanger to pump the consumable heat sink into the cavity.

5. The active control consumable evaporative cooling system according to claim 4, characterized in that, A filter and a flow meter are also provided between the evaporative heat exchanger and the second storage device.

6. The active-controlled consumable evaporative cooling system according to claim 4 or 5, characterized in that, The cavity is provided with a porous component, through which consumable heat sink flows into the cavity. The porous component is located below the heat exchange device, so that the pumped liquid consumable heat sink flows into the cavity evenly and promotes the removal of consumable heat sink bubbles attached to the heat exchange surface of the heat exchange device from the heat exchange device.

7. The active control consumable evaporative cooling system according to claim 6, characterized in that, The porous component has a liquid inlet and several liquid outlets, each of which is connected to the liquid inlet. Some of the liquid outlets face downwards from the bottom surface of the heat exchange device, while others face downwards from the side surface of the heat exchange device.

8. The active control consumable evaporative cooling system according to claim 4 or 5, characterized in that, A liquid level measuring device is installed inside the cavity, and the liquid level measuring device is used to measure the liquid level height inside the cavity. When the liquid level is lower than the first height, the controller controls the liquid supply pump to start, replenishing the consumable heat sink in the second storage device into the cavity; When the liquid level is higher than the second height, the controller controls the liquid supply pump to shut down; Wherein, the first height is less than the second height, and the first height is greater than the top surface height of the heat exchange device.

9. The active control consumable evaporative cooling system according to claim 4 or 5, characterized in that, The second storage device is provided with a vent valve at the top, a liquid level gauge inside the second storage device, and a second filling / draining valve at the bottom of the second storage device.

10. The active control consumable evaporative cooling system according to any one of claims 1-5, characterized in that, The cooling circuit includes a heating section arranged near the heating device to absorb heat from the heating device using the coolant in the cooling circuit. The cooling circuit also includes an onboard heat sink cooling system connected in parallel with the heat exchange device. The outlet side of the heating section is connected to the onboard heat sink cooling system or to the heat exchange device. When the heat dissipation capacity of the onboard heat sink cooling system is sufficient, the outlet of the heating section is connected to the onboard heat sink cooling system, and the onboard heat sink cooling system is used to cool the coolant. When the heat dissipation capacity of the onboard heat sink cooling system is insufficient, the outlet of the heating section is connected to the heat exchange device, and the evaporative heat exchanger is used to cool the coolant in the heat exchange device.

Images