Two-phase temperature control heat dissipation method for remote heat transmission

Abstract

The invention relates to a two-phase heat dissipation method for remote heat transmission, belongs to the technical field of radar heat dissipation, and solves the problem that the heat dissipation efficiency and the heat dissipation quality of a high-power heating device cannot reach expectations in the prior art. The two-phase heat dissipation method comprises the steps that S1, an evaporator, a gas pipeline, a condenser and a liquid pipeline are sequentially connected in series to form a circulation loop; meanwhile, the evaporator is fixedly connected with the heating device; s2, heat generated by the heating device is transmitted to a liquid working medium in the evaporator through the evaporator; the liquid working medium evaporates or boils to be converted into a gas state after absorbing heat; s3, the gaseous working medium flows into a condenser through a gas pipeline and is condensed into a liquid state in the condenser; and S4, the working medium in the liquid state flows back to the evaporator from the condenser through a liquid pipeline. According to the invention, gas-liquid phase change heat absorption and passive self-circulation of the working medium are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of radar heat dissipation, and particularly to a two-phase temperature control heat dissipation method for remote heat transfer. Background Art

[0002] In recent years, there are strict requirements for the integration, light weight, and miniaturization of electronic devices. High integration has led to a sharp increase in the thermal power density of electronic devices, while miniaturization and light weight have caused a decrease in the heat capacity of the devices. The problem of thermal control of electronic devices has become increasingly prominent. The heat dissipation performance of electronic chips directly affects the reliability and working performance of electronic devices. High-efficiency temperature control technology has become one of the key technologies restricting the development of electronic devices.

[0003] In a radar seeker, the transceiver module (TR) power amplifier chip is small in size, high in power density, and low in efficiency. Once the chip temperature reaches the critical value of the allowable temperature, it will seriously endanger the stability and reliability of its operation, and may even cause burnout.

[0004] With the continuous improvement of the requirements for radar performance improvement, relying solely on the methods of metal heat transfer or phase change material heat storage has the defects of poor thermal conductivity, low heat dissipation efficiency, and insufficient heat storage capacity in a limited space. The existing heat dissipation methods are not sufficient to control the chip temperature within a reliable range. At the same time, the method of using an active liquid cooling system for cooling has the disadvantages of complex structure, high energy consumption, and high cost, and cannot be well matched and applied in the seeker.

[0005] Therefore, there is an urgent need to provide a new heat dissipation method to improve the heat transfer performance of the TR cold plate and ensure the normal and stable operation of the chip. Summary of the Invention

[0006] In view of the above analysis, the present invention aims to provide a two-phase temperature control heat dissipation method for remote heat transfer to solve the problems of low heat dissipation efficiency and high energy consumption of existing radars.

[0007] The object of the present invention is mainly achieved through the following technical solutions:

[0008] A two-phase heat dissipation method for remote heat transfer includes the following steps:

[0009] Step S1: Connect an evaporator, a gas pipeline, a condenser, and a liquid pipeline in series in sequence to form a circulation loop; at the same time, fixedly connect the evaporator to a heat-generating device.

[0010] Step S2: The heat generated by the heat-generating device is transferred to the liquid working medium inside the evaporator; after absorbing heat, the liquid working medium evaporates or boils and is converted into a gaseous state.

[0011] Step S3: The gaseous working medium flows into the condenser through the gas pipeline and condenses into a liquid state in the condenser.

[0012] Step S4: The working medium in liquid state returns from the condenser to the evaporator through the liquid pipeline.

[0013] Furthermore, a capillary structure is provided inside the evaporator; the capillary structure can use capillary force to adsorb the liquid working medium into the interior of the capillary structure; and then the liquid working medium is heated jointly by the main body structure and the capillary structure of the evaporator.

[0014] Furthermore, when the capillary structure is a capillary evaporation core, the capillary evaporation core is in the shape of a comb, including: a semi-moon water storage plate and a comb tooth structure; in the step S2, the evaporation heat absorption process of the liquid working medium is as follows:

[0015] Step S201: There is a water storage cavity inside the semi-moon water storage plate, the comb tooth structure 1023 is linear, and a plurality of comb tooth structures are arranged side by side on the side of the semi-moon water storage plate; the liquid working medium in the water storage cavity flows into the drainage inner flow channel inside the comb tooth structure;

[0016] Step S202: A plurality of capillary liquid outlet holes are provided on the side of the comb tooth structure, and the capillary liquid outlet holes 1025 penetrate through the drainage inner flow channel and the outer surface of the comb tooth structure; the liquid inside the capillary evaporation core can flow into the capillary liquid outlet holes through capillary action;

[0017] Step S203: The heat generated by the heating device is transferred to the capillary evaporation core through the outer shell of the evaporator, and then the liquid working medium absorbs the heat of the capillary evaporation core and evaporates.

[0018] Furthermore, in the step S4, a water inlet is provided on the side of the semi-moon water storage plate, and the water inlet is connected to the liquid pipeline; the liquid working medium condensed by the condenser can flow back into the semi-moon water storage plate of the capillary evaporation core through the water inlet.

[0019] In one embodiment of the present invention, in the step S3, the condenser is a curved pipeline; the steam circulates in the curved pipeline and exchanges heat with it; after heat exchange, the steam condenses into a liquid state; the liquid working medium can flow back to the evaporator after flowing out of the condenser.

[0020] In another embodiment of the present invention, in the step S3, the condenser includes: an air inlet plate, a liquid storage plate and a condensate pipe;

[0021] An air storage cavity is provided inside the air inlet plate, and a water collection cavity is provided inside the liquid storage plate; the condensate pipe is connected between the air inlet plate and the liquid storage plate, and both ends of the condensate pipe are respectively communicated with the air storage cavity and the water collection cavity;

[0022] A condensate component is provided inside the condensate pipe; the condensate component is composed of a plurality of condensate units connected in series in sequence; each condensate unit includes: a water guiding pipe and an umbrella-shaped structure arranged at the end of the water guiding pipe.

[0023] Further, in the step S3, the steam condensation process is as follows:

[0024] Step S301: The steam enters the air chamber of the condenser and is diverted through the air chamber into a plurality of condensate pipes;

[0025] Step S302: The steam flows in the condensate pipes while exchanging heat with the pipe body of the condensate pipes and the condensate units inside; after heat exchange, it condenses into liquid water droplets and adheres to the pipe wall of the condensate pipes and the surface of the condensate units;

[0026] Step S303: The condensed liquid water droplets flow along the pipe wall of the condensate pipes. At the same time, the liquid working medium on the condensate units slides down along the umbrella-shaped structure to the water diversion pipe under the action of gravity; the liquid working medium converges during the process of sliding down along the pipe wall of the condensate pipes and the condensate units, and then flows into the water collecting chamber at the bottom.

[0027] Further, in the step S1, a liquid working medium is pre-stored in the condenser; the liquid working medium in the condenser can fill the liquid pipeline, so that the vapor generated in the evaporator enters the gas pipeline, maintaining the one-way circulation flow of the working medium.

[0028] Further, in the step S1, the initial liquid level in the condenser is kept consistent with the initial liquid level in the evaporator.

[0029] Further, in the step S4, after the liquid working medium in the evaporator evaporates and gasifies, the liquid working medium in the condenser can enter the evaporator under the dual action of its internal air pressure and gravity.

[0030] The technical solution of the present invention can at least achieve one of the following effects:

[0031] 1. The present invention relates to a two-phase temperature control heat dissipation method for remote heat transfer, which can perform temperature control on the high-heat-generating tile-shaped TR components in a radar seeker; the liquid working medium is filled in the evaporator as the heat absorption main body, and a large amount of heat of the chip can be absorbed by relying on gas-liquid evaporation, and the chip temperature of the radar can be maintained within a reliable range.

[0032] 2. In the two-phase temperature control heat dissipation method for remote heat transfer of the present invention, the gaseous working medium generated in the evaporator enters the condenser through the gas pipeline for condensation, and after condensation, it can flow back to the evaporator from the condenser through the liquid pipeline. Through the circulating flow of the working medium and the gas-liquid phase change, cyclic heat dissipation is realized. The heat generated by the operation of the heating device is the power source for the circulating flow of the working medium, and the circulation of the working medium is purely passive without additional energy consumption.

[0033] 3. The two-phase temperature-controlled heat dissipation method for remote heat transfer of the present invention pre-fills a part of the liquid working medium in the condenser. After the liquid working medium in the evaporator is consumed, it can be replenished in a timely manner. At the same time, the liquid working medium is also filled in the liquid pipeline, and then the internal space of the condenser is divided into a gas chamber and a liquid chamber by the liquid level line. Furthermore, the internal pressure after the steam enters the condenser can also be used as the power source for replenishing the liquid working medium to the evaporator.

[0034] In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present invention will be described in the subsequent specification. Moreover, some advantages can be made obvious from the specification or understood by implementing the present invention. The objectives and other advantages of the present invention can be realized and obtained from the content specifically pointed out in the specification and the drawings. Brief Description of the Drawings

[0035] The drawings are only used for the purpose of showing specific embodiments and are not considered as a limitation to the present invention. Throughout the drawings, the same reference signs represent the same components.

[0036] Figure 1 It is a schematic diagram of the principle of the two-phase temperature-controlled heat dissipation method for remote heat transfer of the present invention;

[0037] Figure 2 It is a schematic structural diagram of the evaporator and condenser of Embodiment 1 of the present invention;

[0038] Figure 3 It is an exploded view of the structure of the evaporator of Embodiment 1 of the present invention;

[0039] Figure 4 It is a schematic structural diagram of the condenser of Embodiment 1 of the present invention;

[0040] Figure 5 It is a schematic structural diagram of the capillary evaporation core of Embodiment 1 of the present invention;

[0041] Figure 6 It is a schematic longitudinal section effect diagram of the evaporator of Embodiment 2 of the present invention;

[0042] Figure 7 It is a schematic structural diagram of the evaporation layer plate of the evaporator of Embodiment 2 of the present invention;

[0043] Figure 8 It is a schematic cross-section effect diagram of the evaporator of Embodiment 2 of the present invention at the evaporation layer plate;

[0044] Figure 9 It is a schematic cross-section effect diagram of the evaporator of Embodiment 2 of the present invention at the transition layer plate;

[0045] Figure 10Schematic cross-sectional view of the evaporator of Embodiment 2 of the present invention at the water storage layer board;

[0046] Figure 11 Schematic structural diagram of the condenser of Embodiment 3 of the present invention;

[0047] Figure 12 Longitudinal sectional view effect diagram of the condenser of Embodiment 3 of the present invention;

[0048] Figure 13 Transverse sectional view effect diagram of the condenser of Embodiment 3 of the present invention;

[0049] Figure 14 One of the schematic structural diagrams of the condensate unit inside the condensate pipe of the condenser of Embodiment 3 of the present invention;

[0050] Figure 15 Another schematic structural diagram of the condensate unit inside the condensate pipe of the condenser of Embodiment 3 of the present invention;

[0051] Figure 16 Schematic diagram of the installation state of the condensate unit inside the condensate pipe;

[0052] Figure 17 Schematic diagram of the assembled state of the condensate unit with a unilateral umbrella-shaped condensate structure.

[0053] Reference numerals:

[0054] 1 - Evaporator; 2 - Gas pipeline; 3 - Condenser; 4 - Liquid pipeline;

[0055] 101 - Cover plate; 102 - Capillary evaporation core; 103 - Substrate; 1021 - Half-moon water storage plate; 1022 - Water inlet; 1023 - Comb structure; 1024 - Drainage inner flow channel; 1025 - Capillary liquid outlet hole;

[0056] 111 - Evaporation layer board; 112 - Transition layer board; 113 - Water storage layer board; 114 - Air outlet pipe; 115 - Return water pipe; 116 - Fixed cylinder; 117 - Capillary liquid absorption core;

[0057] 301 - Air inlet board; 302 - Liquid storage board; 303 - Condensate pipe; 304 - Air inlet pipe; 305 - Water outlet pipe; 306 - Air storage cavity; 307 - Water collection cavity; 308 - Condensate assembly; 3081 - Drain pipe; 3082 - Ring structure; 3083 - Arc-shaped umbrella rib. Detailed implementation manners

[0058] The following will specifically describe the preferred embodiments of the present invention in conjunction with the accompanying drawings. Among them, the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to explain the principle of the present invention, rather than to limit the scope of the present invention.

[0059] Embodiment 1

[0060] A specific embodiment of the present invention is a two-phase heat dissipation method for remote heat transfer, as Figure 1 shown, including the following steps:

[0061] Step S1: Connect the evaporator 1, gas pipeline 2, condenser 3, and liquid pipeline 4 in series in sequence to form a circulation loop; at the same time, fixedly connect the evaporator 1 with the heat-generating device.

[0062] Step S2: The heat generated by the heat-generating device is transferred to the liquid working medium inside the evaporator 1 through the evaporator 1; after absorbing heat, the liquid working medium evaporates or boils and is converted into a gaseous state.

[0063] Step S3: The gaseous working medium flows into the condenser 3 through the gas pipeline 2 and condenses to a liquid state in the condenser 3.

[0064] Step S4: The working medium in the liquid state flows back from the condenser 3 to the evaporator 1 through the liquid pipeline 4.

[0065] In step S1, the evaporator 1 is arranged below the heat-generating device (TR assembly) and is used to absorb the heat generated by the heat-generating device; the evaporator 1 stores a liquid working medium inside, and the liquid working medium undergoes a gasification phase change after absorbing heat; one end of the gas pipeline 2 is connected to the evaporator 1, and the other end is connected above the condenser 3 for guiding out the gas generated in the evaporator 1; one end of the liquid pipeline 4 is connected below the condenser 3, and the other end is connected to the evaporator 1; the condenser 3 can condense the gaseous working medium into a liquid state, and the liquid pipeline 4 can guide out the liquid working medium condensed in the condenser 3 to the evaporator 1.

[0066] In the step S1, a capillary structure is arranged inside the evaporator 1; the capillary structure can use capillary force to adsorb the liquid working medium into the inside of the capillary structure; and then heat the liquid working medium jointly through the main structure and the capillary structure of the evaporator 1.

[0067] In a specific embodiment of the present invention, in the step S1, the condenser 3 stores a liquid working medium in advance; the liquid working medium in the condenser 3 can fill the liquid pipeline 4, and then the vapor generated in the evaporator 1 enters the gas pipeline 2 to maintain the unidirectional circulation flow of the working medium.

[0068] In a specific embodiment of the present invention, in the step S1, the initial liquid level of the condenser 3 is kept consistent with the initial liquid level of the evaporator 1.

[0069] In a specific embodiment of the present invention, in the step S4, after the liquid working medium in the evaporator 1 evaporates and gasifies, the liquid working medium in the condenser 3 can enter the evaporator 1 under the dual effects of the internal air pressure and gravity.

[0070] In a specific embodiment of the present invention, Figure 3 As shown, the evaporator 1 includes: a cover plate 101, a capillary evaporation core 102 and a substrate 103; the cover plate 101 and the substrate 103 are sealed and connected to form an internal cavity, and the internal cavity stores liquid working medium; the capillary evaporation core 102 is arranged in the internal cavity.

[0071] In this embodiment, the heat generating device to be cooled is a radar; the TR component of the radar is fastened to the evaporator 1 by means of screw connection. Specifically, the cover plate 101 of the evaporator 1 is in direct contact with the electronic components of the radar's tile-type TR component, and the electronic components are cooled by absorbing a large amount of heat through the evaporation and boiling of the liquid working medium inside the evaporator 1.

[0072] Furthermore, the contact surface between the TR assembly and the cover plate 101 of the evaporator 1 is coated with a thermal interface material to reduce the contact thermal resistance. Specifically, the thermal interface material can be thermal grease, thermal gel or thermal pad.

[0073] Furthermore, a liquid filling pipe is processed on one side of the evaporator 1 , and the liquid filling pipe is located on the side of the evaporator 1 and is used to fill the liquid working medium into the evaporator 1 .

[0074] Specifically, the material of the evaporator 1 includes but is not limited to stainless steel, aluminum alloy, magnesium alloy, copper and other metal materials. The cover plate 101 is connected to the base 103 as a whole by welding, and the welding method includes but is not limited to molecular diffusion welding, laser welding, brazing and the like.

[0075] Specifically, the structural form of the evaporator 1 can be a rectangular flat plate type or a cylindrical type according to the installation space in the radar seeker.

[0076] like Figure 2 As shown, the evaporator 1 is connected to the gas pipeline 2 and the liquid pipeline 4 on both sides respectively, and is connected to the condenser 3 through the gas pipeline 2 and the liquid pipeline 4 .

[0077] Specifically, pipeline connections are sealed by welding to ensure no gas or liquid leakage.

[0078] In a specific implementation of the present invention, the capillary evaporation core 102 can enhance the heat exchange of the working medium and can be processed in the internal cavity of the evaporator 1 by sintering or etching.

[0079] The structural form of the capillary evaporation core 102 can adopt a fiber material with a capillary liquid absorption effect; alternatively, it can be formed by sintering metal powder; or, it can be formed by machining grooves on the workpiece surface.

[0080] Specifically, the capillary evaporation core 102 is made of a material with a capillary liquid absorption function.

[0081] Alternatively, the capillary evaporation core 102 is formed by sintering metal powder on the surfaces of the cover plate 101 and the substrate 103 and is located inside the evaporator 1.

[0082] Alternatively, the capillary evaporation core 102 is formed by machining grooves, and the specific method is as follows:

[0083] As Figure 5 shown, the capillary evaporation core 102 is in the shape of a comb and includes: a semi-circular water storage plate 1021 and a comb tooth structure 1023.

[0084] Among them, a water storage cavity is provided inside the semi-circular water storage plate 1021 for storing the liquid working medium; the comb tooth structure 1023 is linear, and a plurality of comb tooth structures 1023 are arranged side by side on the side surface of the semi-circular water storage plate 1021; a drainage inner flow channel 1024 is provided inside the comb tooth structure 1023, and the drainage inner flow channel 1024 communicates with the water storage cavity.

[0085] Specifically, a water inlet 1022 is provided on the side surface of the semi-circular water storage plate 1021, and the water inlet 1022 is used to connect to the liquid pipeline 4; the liquid working medium condensed by the condenser 3 can flow back into the capillary evaporation core 102 through the water inlet 1022.

[0086] Specifically, a plurality of capillary liquid outlet holes 1025 are provided on the side surface of the comb tooth structure 1023, and the capillary liquid outlet holes 1025 penetrate through the outer surface of the drainage inner flow channel 1024 and the comb tooth structure 1023; the liquid inside the capillary evaporation core 102 can be led out to the outer surface of the comb tooth structure 1023 through the drainage inner flow channel 1024 and the capillary liquid outlet holes 1025; and then it can evaporate and absorb heat.

[0087] In the present invention, when the capillary structure is the capillary evaporation core 102, in the step S1, the capillary evaporation core 102 is in the shape of a comb and includes: a semi-circular water storage plate 1021 and a comb tooth structure 1023.

[0088] Furthermore, in the step S2, the evaporation and heat absorption process of the liquid working medium is as follows:

[0089] Step S201: A water storage cavity is provided inside the semi-circular water storage plate 1021, the comb tooth structure 1023 is linear, and a plurality of comb tooth structures 1023 are arranged side by side on the side surface of the semi-circular water storage plate 1021; the liquid working medium in the water storage cavity flows into the drainage inner flow channel 1024 inside the comb tooth structure 1023;

[0090] Step S202: A plurality of capillary liquid outlets 1025 are provided on the side surface of the comb-like structure 1023, and the capillary liquid outlets 1025 penetrate through the drainage internal flow channel 1024 and the outer surface of the comb-like structure 1023; the liquid inside the capillary evaporation core 102 can flow into the capillary liquid outlets 1025 through capillary action.

[0091] Step S203: The heat generated by the heating device is transferred to the capillary evaporation core 102 through the outer shell of the evaporator 1, and then the liquid working medium absorbs the heat of the capillary evaporation core 102 and evaporates.

[0092] Further, in the step S4, a water inlet 1022 is provided on the side surface of the semi-circular water storage plate 1021, and the water inlet 1022 is connected to the liquid pipeline 4; the liquid working medium condensed by the condenser 3 can flow back into the semi-circular water storage plate 1021 of the capillary evaporation core 102 through the water inlet 1022.

[0093] In a specific embodiment of the present invention, as Figure 4 shown, the condenser 3 is a curved pipeline.

[0094] Further, the curved pipeline includes: an S-shaped pipeline and a U-shaped pipeline.

[0095] Further, the S-shaped pipeline and the U-shaped pipeline are arranged alternately, and multiple groups of S-shaped pipelines and U-shaped pipelines are connected in sequence.

[0096] Further, the S-shaped pipeline is composed of a straight pipe section and two arc pipe sections connected to both ends of the straight pipe section.

[0097] Further, the U-shaped pipeline is composed of an arc pipe section and two straight pipe sections connected to both ends of the arc pipe section.

[0098] Further, the arc pipe section is a semi-circular arc pipe.

[0099] In a specific embodiment of the present invention, according to the requirement of the heat dissipation power, one group or multiple groups of condensers 3 are provided; the structural schematic diagram of the double condenser is as Figure 4 shown. Specifically, the material of the condenser 3 includes but is not limited to metal materials such as stainless steel, aluminum alloy, magnesium alloy, and copper.

[0100] In this embodiment, in the step S3, the condenser 3 is a curved pipeline; the steam flows through the curved pipeline and exchanges heat with it; after heat exchange, the steam condenses into a liquid state; the liquid working medium can flow back to the evaporator 1 after flowing out of the condenser 3.

[0101] The condenser 3 of the present invention is mainly in the form of a pipeline, which can be formed in combination with the aircraft skin, and uses the cabin wall as a heat exchange heat sink to exchange heat with the external air. The curved pipeline of the condenser 3 is bent according to the shape of the skin to make it fit the skin wall.

[0102] Furthermore, if space permits, the condenser 3 can be used in combination with a phase change heat storage device, and the phase change material in the phase change heat storage device can be used to exchange heat with the condenser 3 .

[0103] Furthermore, the two-phase temperature control and heat dissipation method for remote heat transmission of the present invention adopts the condenser 3 as the compensation chamber, in which liquid working fluid is stored and is connected to the evaporator 1; the compensation chamber serves to supplement the working fluid and prevent the evaporator 1 from dry burning.

[0104] During implementation, the heat generated by the TR component is conducted to the evaporator 1 through the thermal interface material, and then the heat is transferred to the internal liquid working medium through the capillary evaporation core 102 inside the evaporator 1. The liquid working medium evaporates due to the heat, boils after reaching the saturation temperature, and absorbs a large amount of heat. The vaporized working medium flows to the condenser 3 through the gas pipeline 2, and then the condenser 3 condenses the gasified working medium into a liquid working medium through heat exchange with the external environment. Finally, the liquid working medium flows back to the evaporator 1 through the liquid pipeline 4, completing the thermal heat dissipation cycle. During the cycle, the heat generated by the TR component is exported to the condenser, and then exported to the natural environment through the condenser.

[0105] Example 2

[0106] A specific embodiment of the present invention is improved on the basis of embodiment 1, and provides an alternative solution for the evaporator 1 in embodiment 1:

[0107] In step S1, Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown, the evaporator 1 is a multi-layer structure, including: an evaporation layer plate 111 , a transition layer plate 112 , a water storage layer plate 113 and a capillary wick 117 .

[0108] Specifically, an evaporation chamber is provided inside the evaporation layer plate 111 , a plurality of through holes are provided inside the transition layer plate 112 , and a water storage chamber is provided inside the water storage layer plate 113 .

[0109] Specifically, the capillary wick 117 is cylindrical, and the capillary wick 117 is disposed in the through hole of the transition layer 112 .

[0110] Specifically, Figure 6 , Figure 8 , Figure 10As shown, the upper end of the capillary wick 117 extends out of the upper surface of the transition layer plate 112 and is located in the evaporation chamber. The lower end of the capillary wick 117 extends out of the lower surface of the transition layer plate 112 and is located in the water storage chamber. The capillary wick 117 can absorb the liquid working medium in the water storage chamber and then introduce the working medium into the evaporation chamber.

[0111] Furthermore, as Figure 7 shown, a plurality of fixed cylinders 116 are arranged in an array in the evaporation layer plate 111; the upper end of the capillary wick 117 is nested in the fixed cylinder 116, so as to be able to fix the capillary wick 117 and accelerate the evaporation and heat absorption of the working medium inside it.

[0112] Furthermore, an air outlet pipe 114 and a water return pipe 115 are provided on the side surface of the evaporator 1.

[0113] Among them, the air outlet pipe 114 is communicated with the air inlet of the gas pipeline 2 and is used to export the gaseous working medium generated in the evaporator 1. The water return pipe 115 is communicated with the water outlet of the liquid pipeline 4 and is used to introduce the liquid working medium flowing back in the condenser 3 into the evaporator 1. Specifically, the air outlet pipe 114 is communicated with the evaporation chamber inside the evaporation layer plate 111, and the water return pipe 115 is communicated with the water storage chamber inside the water storage layer plate 113.

[0114] In this embodiment, in the step S, the evaporation process of the evaporator is as follows:

[0115] Step S211: The evaporation layer plate 111 is used to be in contact connection with the heating device, so as to be able to absorb the heat generated by the TR assembly and increase the temperature; the heated evaporation layer plate 111 transfers the heat to the capillary wick 117 and the liquid working medium in the evaporator 1 through the fixed cylinder 116;

[0116] Step S212: After the liquid working medium absorbs heat, it vaporizes and then enters the condenser 3 through the gas pipeline 2. When the gaseous working medium flows out of the evaporator 1, it takes away the heat in the evaporator 1;

[0117] Step S213: The capillary wick 117 can introduce the liquid working medium from the water storage chamber into the evaporation chamber through capillary force.

[0118] In the step S211, the fixed cylinder 116 is fixedly connected to the evaporation layer plate 111 and is sleeved outside the capillary wick 117; it can directly heat the capillary wick 117 and promote the evaporation efficiency.

[0119] It should be noted that the capillary wick 117 can be made of a fibrous material with a liquid absorption effect or made by sintering metal powder on the surface of a metal pipe to form a capillary layer; the lower end of the capillary wick 117 does not contact the lower surface of the water storage chamber; and the fixed cylinder 116 does not contact the upper surface of the transition layer plate. When the capillary wick 117 is a metal pipe with a capillary layer, air outlet holes are formed on its surface.

[0120] Further, in step S4, the gaseous working fluid exchanges heat with the condenser 3, and thus the heat can be transferred to the external environment through the condenser 3; the gaseous working fluid releases heat and condenses to a liquid state in the condenser 3, and then the liquid working fluid flows back to the water storage chamber of the evaporator through the liquid pipeline 4. The heat generated by the TR assembly can vaporize the liquid working fluid and thus promote its circulation between the condenser 3 and the evaporator 1, realizing the circulating heat dissipation of the working fluid.

[0121] In this embodiment, by providing the capillary wick 117 that penetrates the evaporation chamber, the transition layer plate 112 and the water storage chamber, the continuous supply of the liquid working fluid for evaporation is realized; furthermore, by providing a plurality of fixed cylinders 116, the heat exchange between the evaporation layer plate 111 and the capillary wick 117 is promoted. The liquid working fluid stored in the capillary wick 117 is directly heated and evaporated by the fixed cylinders 116, accelerating the conversion and transmission of thermal energy, and ultimately improving the heat dissipation efficiency of the TR assembly.

[0122] Embodiment 3

[0123] A specific embodiment of the present invention is an improvement based on Embodiment 1 or 2, and provides an alternative solution for the condenser in Embodiment 1:

[0124] In step S3, as Figure 11 , Figure 12 , Figure 13 shown, the condenser 3 includes: an air inlet plate 301, a liquid storage plate 302, and a condensate pipe 303; an air storage chamber 306 is provided inside the air inlet plate 301, and a water collection chamber 307 is provided inside the liquid storage plate 302; the condensate pipe 303 is connected between the air inlet plate 301 and the liquid storage plate 302, and both ends of the condensate pipe 303 are respectively communicated with the air storage chamber 306 and the water collection chamber 307; a condensate component 308 is provided inside the condensate pipe 303; the condensate component 308 is composed of a plurality of condensate units connected in series in sequence; the condensate unit includes: a water guiding pipe 3081 and an umbrella-shaped structure provided at the end of the water guiding pipe 3081.

[0125] Further, as Figure 12 , Figure 13 shown, in order to promote the heat exchange between the condensate pipe 303 and the high-temperature steam and enhance the effect of steam condensation and liquefaction, a condensate component 308 is provided inside the condensate pipe 303. Specifically, the condensate component 308 is provided inside the condensate pipe 303 and is fixedly connected to the condensate pipe 303. Further, the condensate component 308 is composed of a plurality of condensate units connected in series in sequence.

[0126] As Figure 14 , Figure 15 shown, the condensate unit includes: a water guiding pipe 3081 and an umbrella-shaped structure.

[0127] One end of the water inlet pipe 3081 is provided with a set of umbrella-shaped structures, or two sets of umbrella-shaped structures are symmetrically arranged at both ends of the water inlet pipe 3081.

[0128] Specifically, as Figure 14 , Figure 15 shown, the umbrella-shaped structure includes: an annular structure 3082 and arc-shaped umbrella ribs 3083; a plurality of arc-shaped umbrella ribs 3083 are provided, and the plurality of arc-shaped umbrella ribs 3083 are installed on the inner side of the annular structure 3082 in a circumferential array manner, and the arc-shaped umbrella ribs 3083 are fixedly connected to the water inlet pipe 3081.

[0129] Specifically, the arc-shaped umbrella ribs 3083 are inclined, with their upper ends fixedly connected to the annular structure 3082 and their lower ends fixedly connected to the water inlet pipe 3081.

[0130] As Figure 16 shown, when two sets of umbrella-shaped structures are symmetrically arranged on both sides of the water inlet pipe 3081, the annular structures 3082 of multiple condensate units are in contact and connected to each other, and are fixed by welding or bonding.

[0131] As Figure 17 shown, when the umbrella-shaped structure is arranged on only one side of the water inlet pipe 3081, multiple condensate units are connected in series and fixedly connected in sequence.

[0132] In this embodiment, in the step S3, the condensation process of the steam is as follows:

[0133] Step S301: The liquid working medium in the evaporator 1 exchanges heat with the TR assembly to generate high-temperature steam, and the high-temperature steam enters the air chamber 306 of the condenser 3 through the gas pipeline 2; after the steam enters the air chamber 306 of the condenser 3, it is divided into multiple condensate pipes 303 through the air chamber 306;

[0134] Step S302: After the steam enters the condensate pipe 303, the steam flows in the condensate pipe 303 while exchanging heat with the pipe wall of the condensate pipe 303 and the condensate units inside it; after heat exchange, it condenses into liquid water droplets and adheres to the pipe wall of the condensate pipe 303 and the surface of the condensate units;

[0135] Step S303: The condensed liquid water droplets flow along the pipe wall of the condensate pipe 303. At the same time, the liquid working medium on the condensate units slides down along the umbrella-shaped structure to the water inlet pipe 3081; the liquid working medium converges during the process of sliding down along the pipe wall of the condensate pipe 303 and the condensate units, and then flows into the bottom water collecting chamber 307.

[0136] Specifically, when the condensed liquid increases, it flows into the interior of the water diversion pipe 3081 along the inner side of the arc-shaped umbrella rib 3083 or flows to the outer wall of the water diversion pipe 3081 along the outer side of the arc-shaped umbrella rib 3083 and flows along the outer wall of the water diversion pipe 3081, and finally converges and flows into the water collecting cavity 307 at the bottom of the condenser 3; and then it can flow back to the evaporator 1 through the liquid pipeline 4 for heat exchange again.

[0137] The condenser 3 of the present invention can achieve rapid cooling and heat exchange of high-temperature steam, and can achieve the convergence and diversion of the liquid after condensation, promoting the effective progress of cyclic heat exchange.

[0138] Compared with the prior art, the technical solution of the present invention has at least one of the following beneficial effects:

[0139] 1. The two-phase temperature-controlled heat dissipation method for remote heat transfer of the present invention, since there is no need to set driving components, is lighter in weight than the active cooling circulation system, meeting the future lightweight requirements of the seeker; it has good heat transfer performance and high heat transfer efficiency, and the equivalent thermal conductivity can reach more than 10000 W / (m·K).

[0140] 2. The two-phase temperature-controlled heat dissipation method for remote heat transfer of the present invention is easy to install and flexible to use; by adjusting the lengths of the gas pipeline and the liquid pipeline, the long-distance transmission of heat can be achieved, and the transmission distance can be greater than 1 m.

[0141] 3. The two-phase temperature-controlled heat dissipation method for remote heat transfer of the present invention, by fitting and fixing the curved pipeline of the condenser 3 to the skin plate of the aircraft or equipment cabin, can promote the heat exchange between the condenser 3 and the skin plate and the external environment, keep the condenser 3 in a low-temperature state, and thus is beneficial to improving the heat dissipation efficiency of the internal components of the radar.

[0142] 4. The two-phase temperature-controlled heat dissipation method for remote heat transfer of the present invention, the evaporator 1 realizes the continuous supply of the liquid working medium from the water storage cavity to the evaporation cavity by setting the capillary liquid absorption core 117, promoting the rapid progress and continuous realization of evaporation and heat absorption; and then improving the heat exchange efficiency of the evaporator 1 for the TR component.

[0143] 5. The condenser 3 of Embodiment 3 of the present invention, by setting the condensate unit with an umbrella structure, can promote the rapid heat exchange between the low-temperature condensate pipe 303 pipe body and the low-temperature condensate unit and the high-temperature steam, and then promote the rapid condensation and liquefaction of the gas working medium. Moreover, the liquefied liquid working medium can flow along the inner wall surface of the condensate pipe 303, the arc-shaped umbrella rib and the water diversion pipe 3081, promoting the convergence of the condensed liquid water droplets, and then realizing the continuous supply of the liquid working medium in the evaporator 1.

[0144] As described above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A two-phase heat dissipation method for remote heat transfer, characterized in that It includes the following steps: Step S1: Connect the evaporator (1), gas pipeline (2), condenser (3) and liquid pipeline (4) in series in sequence to form a circulation loop; at the same time, fixedly connect the evaporator (1) with the heating device; Step S2: The heat generated by the heating device is transferred to the liquid working medium inside the evaporator (1); after absorbing heat, the liquid working medium evaporates or boils and is converted into a gaseous state; Step S3: The gaseous working medium flows into the condenser (3) through the gas pipeline (2) and condenses to a liquid state in the condenser (3); Step S4: The working medium in the liquid state flows back from the condenser (3) to the evaporator (1) through the liquid pipeline (4).

2. The two-phase heat dissipation method for remote heat transfer according to claim 1, characterized in that, A capillary structure is arranged inside the evaporator (1); the capillary structure can use capillary force to adsorb the liquid working medium into the inside of the capillary structure; and then the main structure and the capillary structure of the evaporator (1) jointly heat the liquid working medium.

3. The two-phase heat dissipation method for remote heat transfer according to claim 2, characterized in that, When the capillary structure is a capillary evaporation core (102), the capillary evaporation core (102) is in a comb shape, and the capillary evaporation core (102) includes: a semi-circular water storage plate (1021) and a comb tooth structure (1023); in the step S2, the evaporation heat absorption of the liquid working medium includes: Step S201: A water storage cavity is arranged inside the semi-circular water storage plate (1021), the comb tooth structure (1023) is linear, and a plurality of comb tooth structures (1023) are arranged side by side on the side surface of the semi-circular water storage plate (1021); the liquid working medium in the water storage cavity flows into the drainage inner flow channel (1024) inside the comb tooth structure (1023); Step S202: A plurality of capillary liquid outlet holes (1025) are arranged on the side surface of the comb tooth structure (1023), and the capillary liquid outlet holes (1025) penetrate through the drainage inner flow channel (1024) and the outer surface of the comb tooth structure (1023); the liquid inside the capillary evaporation core (102) can flow into the capillary liquid outlet holes (1025) through capillary action; Step S203: The heat generated by the heating device is transferred to the capillary evaporation core (102) through the outer shell of the evaporator (1), and then the liquid working medium absorbs the heat of the capillary evaporation core (102) and evaporates.

4. The two-phase heat dissipation method for remote heat transfer according to claim 3, characterized in that In the step S4, a water inlet (1022) is arranged on the side surface of the semi-circular water storage plate (1021), and the water inlet (1022) is connected to the liquid pipeline (4); the liquid working medium condensed by the condenser (3) flows back into the semi-circular water storage plate (1021) of the capillary evaporation core (102) through the water inlet (1022).

5. The two-phase heat dissipation method for remote heat transfer according to any one of claims 1-4, characterized in that, In the step S3, the condenser (3) is a curved pipeline; the steam circulates in the curved pipeline and exchanges heat with it; after heat exchange, the steam condenses to a liquid state; the liquid working medium flows out of the condenser (3) and then flows back to the evaporator (1).

6. The two-phase heat dissipation method for remote heat transfer according to any one of claims 1-4, characterized in that, In the step S3, the condenser (3) includes: an air inlet plate (301), a liquid storage plate (302) and a condensate pipe (303); An air inlet plate (301) is internally provided with an air storage cavity (306), and a liquid storage plate (302) is internally provided with a water collecting cavity (307); a condensate pipe (303) is connected between the air inlet plate (301) and the liquid storage plate (302), and two ends of the condensate pipe (303) are respectively communicated with the air storage cavity (306) and the water collecting cavity (307); A condensate component (308) is arranged inside the condensate pipe (303); the condensate component (308) is composed of a plurality of condensate units connected in series in sequence; each condensate unit includes a water guiding pipe (3081) and an umbrella-shaped structure arranged at the end of the water guiding pipe (3081).

7. The two-phase heat dissipation method for remote heat transfer according to claim 6, wherein In the step S3, the condensation of the steam includes: Step S301: The steam enters the air storage cavity (306) of the condenser (3) and is shunted to a plurality of condensate pipes (303) through the air storage cavity (306); Step S302: The steam flows in the condensate pipe (303) and exchanges heat with the pipe body of the condensate pipe (303) and the condensate units inside it; after heat exchange, it condenses into liquid water droplets and adheres to the pipe wall of the condensate pipe (303) and the surface of the condensate units; Step S303: The condensed liquid water droplets flow along the pipe wall of the condensate pipe (303). At the same time, the liquid working medium on the condensate unit slides down along the umbrella-shaped structure to the water guiding pipe (3081) under the action of gravity; during the process of the liquid working medium sliding down along the pipe wall of the condensate pipe (303) and the condensate unit, the convergence of the liquid working medium is completed, and then it flows into the water collecting cavity (307) at the bottom.

8. The two-phase heat dissipation method for remote heat transfer according to claim 7, characterized in that In the step S1, a liquid working medium is pre-stored in the condenser (3); the liquid working medium in the condenser (3) can fill the liquid pipeline (4), and then the steam generated in the evaporator (1) enters the gas pipeline (2) to maintain the one-way circulating flow of the working medium.

9. The two-phase heat dissipation method for remote heat transfer according to claim 8, wherein In the step S1, the initial liquid level in the condenser (3) is kept consistent with the initial liquid level of the evaporator (1).

10. The two-phase heat dissipation method for remote heat transfer according to claim 9, characterized in that, In the step S4, after the liquid working medium in the evaporator (1) evaporates and gasifies, the liquid working medium in the condenser (3) can enter the evaporator (1) under the dual action of its internal air pressure and gravity.

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