Loop heat pipe device

Abstract

The invention discloses a loop heat pipe device. The loop heat pipe device comprises a compensator, an evaporator, a gas pipeline, a condenser, a liquid pipeline, a thermoelectric refrigeration assembly, a liquid storage device assembly and an automatic control unit. The thermoelectric refrigeration assembly comprises a saddle, a thermoelectric refrigeration element, a fan with cooling fins and a flow detector. The saddle is made of a light high-thermal-conductivity material and is in structural and thermal connection with the upper part of the outer surface of the compensator; the flow detector is mounted on the liquid pipeline; the liquid storage device assembly comprises a liquid storage device, a heating element, a liquid storage controller, an environment temperature measuring element, a liquid storage device temperature measuring element and a liquid communicating pipe. The liquid storage device assembly is communicated with the liquid pipeline through a liquid communicating pipe. Through the capillary core structure of the evaporator, the thermoelectric refrigeration assembly arranged on the surface of the compensator and the liquid storage device assembly arranged on the liquid pipeline, the advantages of anti-gravity starting, automatic heat source temperature control, convenient installation, stable operation, long-distance heat transfer, high efficiency and energy conservation are achieved.

Description

Technical Field

[0001] The invention relates to a high-efficiency heat transfer device, in particular to a loop heat pipe device. Background Art

[0002] With the support of the national digital information industry, and with the rapid development of network services and mobile phone services, the number and density of communication base stations are increasing, and the energy consumption of base stations is also attracting more and more attention. The heat generated by communication equipment in distributed communication base stations is usually 2~3kW, and the air conditioning used to maintain the equipment operating environment consumes about 4kW, accounting for 40%~60% of the total energy consumption of the base station. Therefore, reducing heat dissipation energy consumption is the most important measure for energy saving in base stations.

[0003] At present, the following methods are usually adopted to reduce the heat dissipation energy consumption of base stations: (1) only use air conditioning units, but improve air conditioning efficiency; (2) reduce the air conditioning operation time and increase external environment cooling, such as using "direct ventilation cooling composite air conditioning" and "indirect ventilation cooling composite air conditioning". However, these methods consume a lot of energy to maintain the temperature and humidity environment of the entire base station. In recent years, distributed cooling systems, that is, systems that directly cool heat-generating equipment without cooling the entire equipment room, have been developed.

[0004] Heat pipes and loop heat pipes are highly efficient heat transfer devices. Loop heat pipes are characterized by their small heat transfer temperature difference; flexible pipes that are easy to arrange; long-distance transmission of heat from the heat source to the cold source without relying on external driving force; and high heat transfer efficiency. They are particularly suitable for distributed cooling systems and are ideal energy-saving devices for base stations. There have been reports on the use of loop heat pipes to achieve heat dissipation in base stations. However, the loop heat pipes involved usually have the following problems: (1) The loop heat pipes used are gravity-assisted loop heat pipes. For example, the loop heat pipe in a multi-split computer room air conditioning system in the invention patent application 201310410064.4 is a gravity-assisted loop heat pipe. After the working fluid releases heat and condenses in the condenser, it flows back to the evaporator along the liquid pipeline under the action of gravity. For this type of loop heat pipe, the positions of the heat source and the cold source must meet strict relative height restrictions; (2) It is difficult to start, the operation is unstable, and it is easy to fail; (3) The temperature of the heat dissipation equipment cannot be controlled; (4) The heat transfer distance is short and is usually only used for heat transfer within a local area. Summary of the invention

[0005] The present application provides a loop heat pipe device to solve the problems of high energy consumption, complex system, low reliability, difficult operation and maintenance, and inability to control the temperature of the heat dissipation equipment in the current communication base station and equipment in the computer room.

[0006] To solve the above problems, the present application provides a loop heat pipe device, comprising: a compensator, an evaporator, a gas pipeline, a condenser, a liquid pipeline, a thermoelectric refrigeration component, a liquid storage component and an automatic control unit; wherein the compensator, the evaporator, the gas pipeline, the condenser and the liquid pipeline are connected end to end in sequence to form a loop; the thermoelectric refrigeration component comprises: a saddle, a thermoelectric refrigeration element, a fan with heat dissipation fins and a flow detector; the saddle is made of lightweight and highly thermally conductive material, and is structurally and thermally connected to the upper part of the outer surface of the compensator; the thermoelectric refrigeration element transfers cold to the compensator through the saddle; the thermoelectric refrigeration element transfers heat to the evaporator through the fan with heat dissipation fins and air; the flow detector is installed on the liquid pipeline; the liquid storage component comprises: a liquid storage, a heating element, a liquid storage controller, an environmental temperature measuring element, a liquid storage temperature measuring element and a liquid connecting pipe; the liquid storage component is connected to the liquid pipeline through the liquid connecting pipe.

[0007] Furthermore, the capillary core of the evaporator adopts a composite structure of "main core + secondary core", where the main core is located on the outer layer of the secondary core, and is a metal powder sintered porous material made of stainless steel or nickel, with an effective pore size of 1~3μm; the secondary core is a metal powder sintered porous material or a metal wire mesh sintered material made of stainless steel or nickel, with an effective pore size of 20~100μm.

[0008] Furthermore, the inner diameter of the liquid pipeline is 3-8 mm, and the inner diameter of the gas pipeline is 6-15 mm. The liquid pipeline and the gas pipeline are both made of stainless steel or aluminum alloy.

[0009] Furthermore, the internal volume of the liquid reservoir is not less than 0.8 times the internal volume of the condenser.

[0010] Furthermore, the automatic control unit has two modes: on-site monitoring and remote monitoring.

[0011] Furthermore, the cold source of the condenser can be any one of air cooling, water cooling and refrigerator cooling, or a combination of several of them.

[0012] Furthermore, when the condenser uses any one of the forms of a single cold source of a refrigerator, composite air cooling of a refrigerator, or composite water cooling of a refrigerator, the liquid storage assembly, the condenser, and the refrigerator can be integrated into a cabinet to together constitute the outdoor unit part.

[0013] The beneficial effects of the present application are as follows: through the capillary core structure of the evaporator, a thermoelectric cooling component provided on the surface of the compensator, and a liquid storage component provided on the liquid pipeline, the following technical effects are achieved: (1) It has anti-gravity performance, which is convenient for the layout of gas pipelines and liquid pipelines, does not affect the layout of base station equipment and the activities of personnel, and can achieve long-distance and large heat transmission; (2) It can ensure that the loop heat pipe responds to the heat transfer demand at any time, successfully starts and maintains stable operation, and avoids failure due to various reasons; (3) The temperature of the heat dissipation device can be arbitrarily adjusted and accurately controlled to keep the device at the optimal operating temperature, avoiding the adverse effects of excessive or excessively low temperature on the device; (4) The automatic control unit can not only monitor on-site at the base station, but also monitor remotely, so as to ensure the startup of the loop heat pipe, the reliability of operation, and the controllability of the operating temperature in real time, thereby reducing the operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 This is a structural diagram of a loop heat pipe device according to Embodiment 1 of the present invention;

[0016] Figure 2 A control flow chart of a loop heat pipe device of the present invention;

[0017] Figure 3 This is an application example of a loop heat pipe device of the present invention.

[0018] Figure numbers: 1-evaporator; 2-gas pipeline; 3-condenser; 4-liquid pipeline; 5-compensator; 6-thermoelectric refrigeration component; 7-liquid storage component; 8-automatic control unit; 601-saddle; 602-thermoelectric refrigeration element; 603-fan with cooling fins; 604-flow detector; 701-liquid storage; 702-heating element; 703-liquid storage controller; 704-environmental temperature measuring element; 705-liquid storage temperature measuring element; 706-liquid connecting pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), such directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0022] See also Figure 1 As shown, Figure 1 This is a structural diagram of a loop heat pipe device according to Embodiment 1 of the present invention, which comprises an evaporator 1, a gas pipeline 2, a condenser 3, a liquid pipeline 4, a compensator 5, a thermoelectric cooling component 6, a liquid storage component 7 and an automatic control unit 8. The thermoelectric cooling component 6 is mounted on the outer surface of the compensator 5. The liquid storage component 7 is mounted on the liquid pipeline 4. The automatic control unit 8 automatically controls the thermoelectric cooling component 6.

[0023] Thermoelectric cooling assembly 6 includes: saddle 601, thermoelectric cooling element 602, fan 603 with heat dissipation fins and flow detector 604. Saddle 601 is made of light and high thermal conductivity material, preferably aluminum. Saddle 601 is welded to the upper part of the outer surface of compensator 5. Flow detector 604 is installed on liquid pipeline 4 and detects the working fluid flow V of liquid pipeline 4. f Transmitted to the automatic control unit 8.

[0024] The liquid storage assembly 7 includes: a liquid storage 701, a heating element 702, a liquid storage controller 703, an environmental temperature measuring element 704, a liquid storage temperature measuring element 705 and a liquid connecting pipe 706. The liquid connecting pipe 706 connects the liquid storage 701 and the liquid pipeline 4. The liquid storage controller 703 has a built-in PiD algorithm to automatically determine and control the opening and closing of the heating element 702. The internal volume of the liquid storage 701 is the same as the internal volume of the condenser 3.

[0025] The shell of the evaporator 1, the gas pipeline 2, the shell of the condenser 3 and the liquid pipeline 4 are all made of aluminum alloy. The inner diameter of the gas pipeline 2 is 10 mm; the inner diameter of the liquid pipeline 4 is 5 mm.

[0026] The capillary core of the evaporator 1 adopts a "main core + secondary core" structure. The main core and the secondary core are both made of porous sintered stainless steel materials, the pore size of the main core is 2um, and the pore size of the secondary core is 80um.

[0027] See also Figure 2 As shown, Figure 2 This is a control flow chart of a loop heat pipe device of the present invention. Before the loop heat pipe is started, the thermoelectric cooling component 6 and the liquid storage component 7 are powered on, and the control temperature T of the heat dissipation device is set on the liquid storage controller 703. s .

[0028] The thermoelectric cooling component 6 has two working modes: startup and operation. When the heat pipe is started, the automatic control unit 8 controls the thermoelectric cooling component 6 to the startup mode. The thermoelectric cooling component 6 starts cooling and transfers the cold to the compensator 5. The gaseous working medium in the compensator 5 is cooled and condensed into liquid working medium. Until the flow detector 604 detects the flow rate V of the working medium in the liquid pipeline 4 f ≥Pre-set safety flow rate V s At this time, the loop heat pipe completes the startup. At this time, the automatic control unit 8 controls the thermoelectric refrigeration component 6 to enter the operation mode, otherwise it is in the startup mode.

[0029] In the operating mode, the automatic control unit 8 sets V f With V s When V f <V s When V f ≥V s When the automatic control unit 8 controls the thermoelectric cooling component 6 to shut down.

[0030] After the liquid storage assembly 7 is powered on, the liquid storage controller 703 reads the control temperature Ts of the heat dissipation device and the ambient temperature T h , Δt (ambient temperature T h The minimum heat transfer temperature difference between the evaporator 1 and the loop heat pipe device of the present invention is Δt 3°C ​​to 5°C) and the liquid temperature T f . And through its built-in PiD algorithm, T s and T h After comparison with +Δt, the input temperature T of the liquid storage controller 703 is i Assign a value. i The assignment method is: when T s <T h+Δt, T i = T h +Δt; otherwise T i =T s When T i >T f When T i ≤T f When the liquid storage controller 703 controls the heating element 702 to stop.

[0031] The working principle of a loop heat pipe device of the present invention is described in detail below.

[0032] The principle of starting a loop heat pipe device under anti-gravity conditions of the present invention is as follows: when the loop heat pipe is started, the automatic control unit 8 controls the thermoelectric refrigeration component 6 to start. The thermoelectric refrigeration element 602 starts to cool and transfers the cold energy to the compensator 5 through the saddle 601. The gaseous working medium in the compensator 5 is cooled and condensed into a liquid working medium. As the condensation amount increases, the liquid working medium infiltrates the capillary wick in the evaporator 1, absorbs heat and vaporizes in the evaporator 1, and then enters the gas pipeline 2. As the vaporization continues, the pressure in the gas pipeline 2 gradually increases. When the pressure increases to a level sufficient to overcome the resistance of the loop heat pipe, the gaseous working medium flows along the gas pipeline 2 to the condenser 3, and condenses into a liquid working medium in the condenser 3. The evaporator 1 absorbs heat, and the capillary pressure difference generated at the vaporization interface formed on the surface of the capillary wick therein continuously draws the working medium in the liquid pipeline 4 into the evaporator 1. This cycle continues until the flow detector 604 detects the flow rate V of the working medium in the liquid pipeline 4. f ≥Safety flow V s When the loop heat pipe is started, the loop heat pipe is started. During this process, the fan 603 with heat dissipation fins continues to rotate to transfer heat to the surrounding air. The heat is finally absorbed by the loop heat pipe evaporator 1 and transferred to the external environment. Therefore, the loop heat pipe device of the present invention can respond to heat transfer requirements at any time and start quickly.

[0033] The temperature control principle of a loop heat pipe device of the present invention is as follows: the liquid storage assembly 7 is powered on, and the liquid storage controller 703 reads the control temperature T of the heat dissipation device. s The temperature measuring elements 704 and 705 respectively detect the ambient temperature T h and feedback temperature (reservoir liquid temperature) T f is transmitted to the liquid storage controller 703. When T s >T h +Δt, the input temperature T of the liquid storage controller 703 i =T s .at this time:

[0034] (1) If T s >T f, the liquid storage controller 703 controls the heating element 702 to start. The temperature of the liquid working medium in the liquid storage 701 increases, the evaporation amount increases, and the gas pressure above it increases. Until T f =T s When , the heating element 702 stops. Since the working fluid in the liquid storage tank 701 is in a gas-liquid two-phase saturated state, its pressure is T s The saturation pressure P corresponding to the temperature s Since the liquid storage tank 701 is connected to the loop heat pipe liquid pipeline 4 and the evaporator 1, the working pressure of the evaporator 1 also increases to P s Because the working fluid in evaporator 1 is also in a gas-liquid two-phase saturated state. Therefore, the working temperature of evaporator 1 is T s Therefore, the device temperature is controlled at T s .

[0035] (2) If T f ≥T s , the heating element 702 is in the shutdown state. Because T f ≥T s > T h , liquid temperature T of liquid reservoir 701 f Higher than ambient temperature T h The liquid storage device 701 dissipates heat to the environment, and the temperature gradually decreases. f =T s When the pressure in the liquid storage tank 701 is P s , the pressure of evaporator 1 is P s . Accordingly, the operating temperature of evaporator 1 is T s Therefore, the device temperature is controlled at T s The liquid storage device 701 continues to dissipate heat to the environment. f <T s When the liquid storage controller 703 controls the heating element 702 to restart.

[0036] Control temperature T required for electrical equipment s Generally, it is 45℃~55℃. Therefore, when the ambient temperature is lower than 40℃, only the loop heat pipe device of the present invention can be used to achieve heat dissipation and temperature control of the equipment. In special cases, when the control temperature T s Lower, T s ≤T h +Δt, the external environment alone cannot dissipate heat independently, and it is necessary to increase the cooling source and lower the cooling temperature to meet the control temperature T again. s >Cooling temperature T c +Conditions for heat transfer temperature difference Δt.

[0037] The principle of maintaining stable operation of a loop heat pipe device of the present invention: during operation, the loop heat pipe will be affected by various reasons such as changes in heat source load and cold source temperature, resulting in pressure fluctuations and flow changes, causing unstable operation of the loop heat pipe or even instantaneous failure. The change of working fluid flow in a loop heat pipe device of the present invention is detected and controlled by the thermoelectric refrigeration component 6, and the change of working fluid pressure is controlled by the liquid storage component 7. Under the coordinated action of the thermoelectric refrigeration component 6 and the liquid storage component 7, the loop heat pipe device is always in a stable operating state.

[0038] Since the temperature of the working fluid in the loop heat pipe is lower than the ambient temperature, the working fluid will absorb heat along the way when it flows through the liquid pipeline 4 and the compensator 5. f If the working medium is too small, it will vaporize due to heat absorption, resulting in failure of the loop heat pipe. In the loop heat pipe device of the present invention, the flow detector 604 in the thermoelectric refrigeration component 6 constantly detects the flow rate V of the liquid working medium in the liquid pipeline 4. f , when V f < V s When the thermoelectric cooling assembly 6 is started, the thermoelectric cooling element 602 and the fan 603 with heat dissipation fins start to work. The thermoelectric cooling element 602 starts to cool and transfers the cold energy to the compensator 5 through the saddle 601. The gaseous working medium in the compensator 5 is cooled and condensed into liquid working medium, maintaining the flow rate V of the liquid working medium. f > V s , avoiding the failure of the loop heat pipe.

[0039] When the load of the heat dissipation device changes or the ambient temperature changes, it will cause pressure fluctuations in the loop heat pipe. s The liquid reservoir assembly 7 automatically controls the start and stop of the heating element 702 therein, and keeps the pressure in the liquid reservoir constant at all times, that is, keeps the pressure in the loop heat pipe stable at all times, thereby maintaining the stable operation of the loop heat pipe device.

[0040] See also Figure 3 As shown, Figure 3 This is an application example of a loop heat pipe device of the present invention. It includes: an evaporator 1, a gas pipeline 2, a condenser 3, a liquid pipeline 4, a compensator 5, a thermoelectric cooling component 6, a liquid storage component 7, an automatic control unit 8, a heat pipe 9, an axial flow fan 10, a refrigerator 11 and an axial flow fan 12. The structure of the evaporator 1 is the same as that of the evaporator described in the first embodiment; the structures of the thermoelectric cooling component 6 and the liquid storage component 7 are respectively the same as those of the first embodiment. Figure 1 The embodiment of the thermoelectric cooling assembly and the liquid storage assembly shown. The thermoelectric cooling assembly 6 is installed on the upper part of the outer surface of the compensator 5. The liquid storage assembly 7 is installed on the liquid pipeline 4. The automatic control unit 8 automatically controls the thermoelectric cooling assembly 6.

[0041] Considering that the heat dissipation of the equipment only has requirements for the ambient temperature, humidity and cleanliness, but no requirements for the air quality. Therefore, the base station equipment is placed in a closed space, and the loop heat pipe device of the present invention is used to directly cool the equipment. The evaporator 1, compensator 5 and thermoelectric refrigeration component 6 of the loop heat pipe device of the present invention are placed in the cabinet. The automatic control unit 8 is placed outside the cabinet. The cabinet is also provided with a heat pipe 9 for thermally conducting cooling of high-power heat-generating components on the heat dissipation device and a fan 10 for forcing air circulation in the cabinet. The liquid storage assembly 7, condenser 3 and refrigerator 11 of the loop heat pipe device of the present invention are integrated in a cabinet, and together constitute the outdoor unit part.

[0042] When the control temperature required by the heat dissipation equipment is low, the heat dissipation demand cannot be met by relying solely on the environment, and an external cooling source needs to be added. Assume that the control temperature required by the base station equipment in this application example is T s When the ambient temperature is lower than 30°C, the heat dissipation and temperature control of the equipment can be realized by using only the loop heat pipe device of the present invention. In summer working conditions, when the ambient temperature is higher than 30°C, the refrigerator 11 needs to be turned on, and the cooling water (whose temperature is lower than 30°C) produced by the refrigerator 11 is cooled to a low temperature, thereby reducing the cooling temperature T c , re-satisfy the control temperature T s >Cooling temperature T c +The condition of heat transfer temperature difference Δt. ) Cool the working fluid in condenser 3.

[0043] First, the automatic control unit 8 is turned on, the thermoelectric cooling component 6 and the liquid storage component 7 are powered on, and the control temperature T required by the heat dissipation device is set on the liquid storage component 7. s The automatic control unit 8 controls the startup loop heat pipe, and the thermoelectric cooling component 6 enters the startup mode. f ≥V s, the loop heat pipe completes startup. Thereafter, the thermoelectric refrigeration component 6 enters the working mode, otherwise it runs in the startup mode. The evaporation end of the heat pipe 9 in the cabinet directly contacts the high-power heating components on the heat dissipation device, and absorbs the heat dissipation of the high-power heating components by heat conduction. The working fluid in the evaporation end of the heat pipe 9 absorbs heat and vaporizes, reaches the condensation end of the heat pipe 9, and transfers the heat to the evaporator 1 of the loop heat pipe, and then condenses into a liquid working fluid. Under the action of gravity and capillary force, it flows back to the evaporation end of the heat pipe 9. In this cycle, the heat is transferred from the high-power heating components to the evaporator 1 of the loop heat pipe. The liquid working fluid in the evaporator 1 absorbs the heat released in the cabinet and the condensation end of the heat pipe 9 and then vaporizes, enters the gas pipeline 2, flows along the gas pipeline 2 to the condenser 3, and condenses into a liquid working fluid in the condenser 3, and then returns to the evaporator 1 along the liquid pipeline 4. In this cycle, the heat is finally transferred from the loop heat pipe to the natural environment outside the base station. During this process, the fan 10 works to force the air in the cabinet to circulate, thereby strengthening the heat exchange between the air in the cabinet and the heat pipe 9 and the loop heat pipe evaporator 1. When the ambient temperature is lower than 30°C, only the loop heat pipe device of the present invention is used to dissipate heat, and the fan 12 forces air cooling on the condenser 3; when the ambient temperature is higher than 30°C, the refrigerator 11 is turned on, and the cooling water produced by the refrigerator 11 cools the working medium in the condenser 3.

[0044] The loop heat pipe device of the present invention is set at a temperature T s The temperature control principle and stable operation principle of the loop heat pipe device in this application example are the same as those mentioned above and will not be further explained here.

[0045] Functions and effects of the embodiments:

[0046] The base station equipment is placed in a closed space, and a loop heat pipe device of the present invention is used to directly absorb heat and cool the equipment, and then the heat is transferred to the external natural environment. This avoids the energy consumption of traditional ventilation and air-conditioning cooling methods to maintain the temperature and humidity environment of the entire base station, that is, reduces the energy consumption in the heat transfer path, and is highly efficient and energy-saving.

[0047] The present invention provides a loop heat pipe device, which has a capillary core structure of its evaporator, a thermoelectric refrigeration component on the surface of the compensator, and a liquid storage component on the liquid pipeline. It can achieve long-distance and large heat transmission; it has anti-gravity performance, which is convenient for the layout of gas pipelines and liquid pipelines, and does not affect the layout of base station equipment and personnel activities; it can ensure that the loop heat pipe device responds to heat transfer needs at any time, starts successfully, maintains stable operation, and avoids failures caused by various reasons; and it can arbitrarily adjust and accurately control the temperature of the heat dissipation device, so that the device is always at the optimal working temperature, avoiding the adverse effects of excessively high or low temperatures on the device;

[0048] The loop heat pipe device of the present invention also has two control modes: on-site setting and remote setting, and can feed back its main information to the remote client in real time. The main feedback information includes: current mode, working temperature, heat transfer, etc. Therefore, the startup of the loop heat pipe device, the reliability of operation, and the controllability of the working temperature can be guaranteed in real time, reducing the operation and maintenance costs.

[0049] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A loop heat pipe device, characterized in that: include: A compensator, an evaporator, a gas pipeline, a condenser, a liquid pipeline, a thermoelectric refrigeration component, a liquid reservoir component and an automatic control unit; wherein the compensator, the evaporator, the gas pipeline, the condenser and the liquid pipeline are connected end to end in sequence to form a loop; the thermoelectric refrigeration component comprises: a saddle, a thermoelectric refrigeration element, a fan with heat dissipation fins and a flow detector; the saddle is made of a lightweight and highly thermally conductive material and is structurally and thermally connected to the upper part of the outer surface of the compensator; the thermoelectric refrigeration element transfers cold to the compensator through the saddle; the thermoelectric refrigeration element transfers heat to the evaporator through the fan with heat dissipation fins and air; the flow detector is installed on the liquid pipeline; the liquid reservoir component comprises: a liquid reservoir, a heating element, a liquid reservoir controller, an environmental temperature measuring element, a liquid reservoir temperature measuring element and a liquid connecting pipe; the liquid reservoir component is connected to the liquid pipeline through the liquid connecting pipe.

2. The loop heat pipe device according to claim 1, characterized in that: The capillary core of the evaporator adopts a composite structure of "main core + secondary core". The main core is located on the outer layer of the secondary core and is a metal powder sintered porous material made of stainless steel or nickel, with an effective pore size of 1~3μm; the secondary core is a metal powder sintered porous material or a metal wire mesh sintered material made of stainless steel or nickel, with an effective pore size of 20~100μm.

3. The loop heat pipe device according to claim 1, characterized in that: The inner diameter of the liquid pipeline is 3-8 mm; the inner diameter of the gas pipeline is 6-15 mm; the materials of the liquid pipeline and the gas pipeline are both stainless steel or aluminum alloy.

4. The loop heat pipe device according to claim 1, characterized in that: The internal volume of the liquid reservoir is not less than 0.8 times the internal volume of the condenser.

5. The loop heat pipe device according to claim 1, characterized in that: The automatic control unit has two modes: on-site monitoring and remote monitoring.

6. The loop heat pipe device according to claim 1, characterized in that: The cold source of the condenser can be any one of air cooling, water cooling and refrigerator cooling, or a combination of these.

7. The loop heat pipe device according to claim 1, characterized in that: When the condenser uses any one of a single cold source of a refrigerator, composite air cooling of a refrigerator, or composite water cooling of a refrigerator, the liquid storage assembly, the condenser, and the refrigerator can be integrated into a cabinet to together constitute an outdoor unit part.

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