Gas-liquid heat exchanger with coupled multi-stage separation type micro-channel heat pipe and plate heat exchanger

Abstract

The invention discloses a multi-stage separation type gas-liquid heat exchanger with coupled micro-channel heat pipes and a plate heat exchanger, relates to the technical field of heat exchange devices, is suitable for cooling hot air in air compressor rooms of power plants and the like, and comprises at least two stages of heat exchange devices which are connected in series, the heat exchange device comprises an evaporation mechanism, an ascending pipe, a condensation mechanism and a descending pipe, the evaporation mechanism, the ascending pipe, the condensation mechanism and the descending pipe are sequentially communicated to form heat exchange circulation, and the gas-liquid heat exchanger further comprises a drainage device which is arranged behind the evaporation mechanism and used for sucking high-temperature air to pass through the evaporation mechanism. The problems that in the prior art, a power plant air compressor room is commonly cooled in a traditional forced convection mode, the energy efficiency and the operation cost are too high, and meanwhile the heat exchange effect is not obvious and cannot meet the actual use requirement are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange devices, and in particular to a gas-liquid heat exchanger coupled with a multi-stage separation microchannel heat pipe and a plate heat exchanger, which is suitable for hot air cooling in air compressor rooms of power plants and the like. Background Art

[0002] The air compressor in the air compressor room of a power plant generates a large amount of hot air during operation. If it is not cooled in time, the hot air will affect the operating efficiency of the air compressor and may even cause equipment failure. Traditional heat exchangers have many limitations in energy efficiency and volume, and it is difficult to meet the needs of modern industry for efficient and compact equipment. In addition, the heat exchangers in the prior art mostly adopt a single-stage structure, with low heat exchange efficiency and high energy consumption, and there are also certain limitations in the selection of cooling media and refrigerants.

[0003] With the development of science and technology, the demand for heat exchange technology in various industries has increased sharply. However, the air compressor room of power plants is often cooled by traditional forced convection, which generally has the problems of high energy efficiency and operating costs, and the heat exchange effect is not obvious and cannot meet the actual use needs. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a gas-liquid heat exchanger coupled with a multi-stage separation microchannel heat pipe and a plate heat exchanger, which is used in the air compressor room of a power plant. The present invention is based on the principle of a multi-stage gravity separation heat pipe, and realizes efficient heat exchange by coupling a multi-stage heat exchanger and a gravity heat pipe system with a plate heat exchanger. It can effectively cool the hot air in the air compressor room of a power plant, improve the operating efficiency of the equipment, and extend the service life of the equipment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A gas-liquid heat exchanger in which a multi-stage separation type microchannel heat pipe is coupled with a plate heat exchanger, the gas-liquid heat exchanger comprising at least two stages of heat exchange devices arranged in series;

[0007] Wherein, the heat exchange device comprises an evaporation mechanism, an ascending pipe, a condensing mechanism and a descending pipe, and the evaporation mechanism, the ascending pipe, the condensing mechanism and the descending pipe are sequentially connected to form a heat exchange cycle;

[0008] The gas-liquid heat exchanger also includes a drainage device, which is arranged after the evaporation mechanism and is used to draw high-temperature air through the evaporation mechanism.

[0009] According to one aspect of the above technical solution, the gas-liquid heat exchanger includes a three-stage heat exchange device, wherein:

[0010] The evaporation mechanism includes a first-stage evaporator, a second-stage evaporator and a third-stage evaporator which are stacked, each including a heat dissipation fin and a microchannel heat pipe, wherein the microchannel heat pipe is filled with a refrigerant medium;

[0011] The riser includes a primary riser, a secondary riser and a tertiary riser;

[0012] The condensing mechanism comprises a first-stage condenser, a second-stage condenser and a third-stage condenser arranged in parallel, and all of them are plate-type radiators;

[0013] The downcomer comprises a primary downcomer, a secondary downcomer and a tertiary downcomer;

[0014] Among them, the first-stage evaporator, the first-stage riser, the first-stage condenser and the first-stage downtube are connected to form a first-stage heat exchange cycle, the second-stage evaporator, the second-stage riser, the second-stage condenser and the second-stage downtube are connected to form a second-stage heat exchange cycle, and the third-stage evaporator, the third-stage riser, the third-stage condenser and the third-stage downtube are connected to form a third-stage heat exchange cycle.

[0015] According to one aspect of the above technical solution, in the first-stage evaporator, the second-stage evaporator and the third-stage evaporator, a plurality of microchannel heat pipes are provided to form an evaporator frame, and the heat dissipation fins are arranged in a bent shape within the evaporator frame.

[0016] According to one aspect of the above technical solution, the first-stage condenser, the second-stage condenser and the third-stage condenser are arranged side by side on the first mounting plate.

[0017] According to one aspect of the above technical solution, a first connecting pipe is arranged in series between the first-stage condenser and the second-stage condenser, and a second connecting pipe is arranged in series between the second-stage condenser and the third-stage condenser.

[0018] According to one aspect of the above technical solution, the primary riser is connected between the gaseous working medium output end of the primary evaporator and the top of the primary condenser, and the primary downcomer is connected between the bottom of the primary condenser and the medium reflux section of the primary evaporator;

[0019] The secondary ascending pipe is connected between the gaseous working medium output end of the secondary evaporator and the top of the secondary condenser, and the secondary descending pipe is connected between the bottom of the secondary condenser and the reflux section of the secondary evaporator;

[0020] The three-stage ascending pipe is connected between the gaseous working medium output end of the three-stage evaporator and the top of the three-stage condenser, and the three-stage descending pipe is connected between the bottom of the three-stage condenser and the reflux section of the three-stage evaporator.

[0021] According to one aspect of the above technical solution, a cooling water outlet is further provided at the top of the first-stage condenser, and a cooling water inlet is further provided at the bottom of the third-stage condenser.

[0022] According to one aspect of the above technical solution, the drainage device is arranged on a second mounting plate, and the second mounting plate is arranged at the bottom of the first mounting plate and connected to the first mounting plate;

[0023] A first support plate is provided between the connection portion between the first mounting plate and the second mounting plate and the evaporation mechanism, and a second support plate is provided between an end of the second mounting plate away from the first mounting plate and the evaporation mechanism.

[0024] According to one aspect of the above technical solution, the primary evaporator, the second evaporator and the third evaporator are stacked, and the third evaporator is arranged toward the drainage device to be connected to the first support plate and the second support plate.

[0025] According to one aspect of the above technical solution, the air guide device is an axial flow fan for sucking high-temperature air through the evaporation mechanism.

[0026] In summary, the gas-liquid heat exchanger coupled with the multi-stage separated heat pipe and the plate heat exchanger shown in the present invention adopts an innovative multi-stage evaporator-condenser mode, which has three independent evaporators, which do not affect each other during operation. The three condensers are connected by two connecting pipes, and the three condensers are connected in series by cooling water to take away the heat released by the gaseous working fluid when it is cooled and condensed. The temperature of the hot fluid drops significantly after passing through the three-stage evaporation device, thereby having an excellent cooling effect. In addition, the present invention can also change the number of evaporation device-condensation device stages according to the actual heat exchange requirements of the air compressor of the power plant, and increase or decrease the number of heat exchange cycles in turn. Therefore, the gas-liquid heat exchanger shown in the present invention is adopted to achieve the purposes of high efficiency, energy saving, compact structure and small footprint. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of a gas-liquid heat exchanger in one embodiment of the present invention;

[0029] Figure 2 It is a schematic structural diagram of a gas-liquid heat exchanger in one embodiment of the present invention at a first viewing angle;

[0030] Figure 3 It is a schematic structural diagram of a gas-liquid heat exchanger in one embodiment of the present invention at a second viewing angle;

[0031] Figure 4It is a schematic structural diagram of a gas-liquid heat exchanger in one embodiment of the present invention at a third viewing angle;

[0032] Figure 5 It is a partial enlarged view of a microchannel heat pipe and fins in an evaporator in one embodiment of the present invention; Figure 6 Schematic diagram of a heat dissipation experiment of a gas-liquid heat exchanger in one embodiment of the present invention.

[0033] Component symbol description:

[0034] Drainage device 01, primary condenser 02, secondary condenser 03, tertiary condenser 04, primary evaporator 05, secondary evaporator 06, tertiary evaporator 07, primary riser 08, secondary riser 09, tertiary downcomer 10, primary downcomer 11, secondary downcomer 12, tertiary downcomer 13, first connecting pipe 14, second connecting pipe 15, fin 16, microchannel heat pipe 17, cooling water inlet 18, cooling water outlet 19. DETAILED DESCRIPTION

[0035] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. Several embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0037] Embodiment 1

[0038] The first embodiment of the present invention provides a gas-liquid heat exchanger coupled with a multi-stage separated heat pipe and a plate heat exchanger, which is particularly suitable for use in the air compressor room of a power plant. It should be pointed out here that when the ambient temperature of the air compressor room of a power plant is high in the summer, the temperature near the compressor inside the air compressor room of the power plant can reach above 85°C, and the temperature near the motor is around 45°C, which is relatively high. In order to prevent the motor and compressor from being damaged by excessive temperature, it is usually necessary to install heat dissipation equipment to cool them down. This embodiment uses the following gas-liquid heat exchanger installed in the air compressor room of a power plant for cooling, so that the room has a suitable ambient temperature.

[0039] See also Figure 1-Figure 5In this embodiment, the gas-liquid heat exchanger includes at least two groups, that is, at least two stages of heat exchange devices arranged side by side, and the heat exchange devices are, for example, two-stage, three-stage, four-stage or even more. Each stage of the heat exchange device includes an evaporation mechanism, an ascending pipe, a condensing mechanism and a descending pipe. The evaporation mechanism, the ascending pipe, the condensing mechanism and the descending pipe are connected in sequence to form a heat exchange cycle, and the multi-stage heat exchange device constitutes a multi-stage heat exchange cycle. The gas-liquid heat exchanger also includes a drainage device 01, which is arranged after the evaporation mechanism, and is used to inhale the hot air discharged by the evaporation mechanism to cool it down and discharge cold air.

[0040] In the present embodiment, the gas-liquid heat exchanger specifically includes a three-stage heat exchange device, wherein: the evaporation mechanism includes a stacked first-stage evaporator 05, a second-stage evaporator 06 and a third-stage evaporator 07, each including a heat dissipation fin 16 and a microchannel heat pipe 17, and the microchannel heat pipe 17 is filled with a flowable refrigerant medium; the riser includes a first-stage riser 08, a second-stage riser 09 and a third-stage riser, which are used for gaseous working medium transmission; the condensation mechanism includes a first-stage condenser 02, a second-stage condenser 03 and a third-stage condenser 04 arranged in parallel, and all are plate radiators, which are used for heat exchange between gaseous working medium and cooling water to release heat for cooling; and the downcomer includes a first-stage downcomer 11, a second-stage downcomer 12 and a third-stage downcomer 13.

[0041] Among them, the first-level evaporator 05, the first-level riser 08, the first-level condenser 02 and the first-level downcomer 11 are connected to form a first-level heat exchange cycle, the second-level evaporator 06, the second-level riser 09, the second-level condenser 03 and the second-level downcomer 12 are connected to form a second-level heat exchange cycle, and the third-level evaporator 07, the third-level riser, the third-level condenser 04 and the third-level downcomer 13 are connected to form a third-level heat exchange cycle.

[0042] Specifically, the evaporation mechanism includes a first-stage evaporator 05, a second-stage evaporator 06, and a third-stage evaporator 07 which are arranged in parallel and stacked. Each stage of the evaporator can work independently, and each evaporator includes a fin 16 and a microchannel heat pipe 17. The microchannel heat pipe 17 is filled with a refrigerant. The refrigerant used in this embodiment is R134a, but is not limited to R134a, and can also be a refrigerant such as carbon dioxide and water. Among them, the design of the fin 16 structure increases the contact area between the refrigerant and the hot air, improves the evaporation efficiency, and thus enhances the overall heat exchange effect. In addition, in the first-stage evaporator 05, the second-stage evaporator 06, and the third-stage evaporator 07, a plurality of microchannel heat pipes 17 are provided to form an evaporator frame, and the heat dissipation fins 16 are arranged in a bent shape in the evaporator frame. In addition, the first-stage condenser 02, the second-stage condenser 03, and the third-stage condenser 04 are arranged side by side on the first mounting plate, and the first mounting plate is made of metal material, which has good support and can ensure normal operation in a high temperature environment.

[0043] In this embodiment, a first connecting pipe 14 is arranged in series between the primary condenser 02 and the secondary condenser 03, and a second connecting pipe 15 is arranged in series between the secondary condenser 03 and the tertiary condenser 04. Among them, the primary rising pipe 08 is connected between the gaseous working medium output end of the primary evaporator 05 and the top of the primary condenser 02, and the primary downcomer 11 is connected between the bottom of the primary condenser 02 and the medium reflux section of the primary evaporator 05; the secondary rising pipe 09 is connected between the gaseous working medium output end of the secondary evaporator 06 and the top of the secondary condenser 03, and the secondary downcomer 12 is connected between the bottom of the secondary condenser 03 and the reflux section of the secondary evaporator 06; the tertiary rising pipe is connected between the gaseous working medium output end of the tertiary evaporator 07 and the top of the tertiary condenser 04, and the tertiary downcomer 13 is connected between the bottom of the tertiary condenser 04 and the reflux section of the tertiary evaporator 07. The top of the first-stage condenser 02 is provided with a cooling water outlet 19 , and the bottom of the third-stage condenser 04 is provided with a cooling water inlet 18 .

[0044] In addition, the drainage device 01 is arranged on the second mounting plate, and the second mounting plate is arranged at the bottom of the first mounting plate and connected to the first mounting plate; wherein a first support plate is arranged between the connection part of the first mounting plate and the second mounting plate and the evaporation mechanism, and a second support plate is arranged between the end of the second mounting plate away from the first mounting plate and the evaporation mechanism. The first-stage evaporator 05, the second evaporator and the third evaporator are arranged in a stacked manner, and the third-stage evaporator 07 is arranged toward the drainage device 01 to be connected to the first support plate and the second support plate.

[0045] More specifically, the drainage device 01 is an axial flow fan, which is used to draw in the hot air discharged from the evaporation mechanism and cool it down to discharge cold air by forced convection. The drainage device 01 is arranged behind the evaporation mechanism to introduce the high-temperature air in front of the evaporation mechanism into the evaporation mechanism and discharge it outside the system after heat exchange and cooling. The design of the heat exchange mechanism takes into account the optimized path of the airflow to ensure that the hot air can be discharged quickly and effectively.

[0046] During actual use of the gas-liquid heat exchanger shown in this embodiment, the high-temperature air inside the air compressor room passes through the first-stage evaporator 05, the second-stage evaporator 06 and the third-stage evaporator 07 in sequence under the action of the drainage device 01. The high-temperature air is greatly cooled after passing through the above three-stage evaporator 07, and then discharged again through the drainage device 01, thereby realizing the cooling cycle of the hot air in the air compressor room of the power plant.

[0047] Specifically, in the primary heat exchange cycle, the high-temperature air exchanges heat with the refrigerant medium in the microchannel heat pipe 17 in the primary evaporator 05, and the liquid refrigerant medium is vaporized by the heat, taking away at least the heat in the high-temperature air, thereby cooling the high-temperature air. The gaseous working medium flows into the primary condenser 02 through the primary riser 08, exchanges heat with the cooling water, and the gaseous working medium is liquefied by the cooling, and returns to the primary evaporator 05 along the primary downcomer 11 to form a cycle. The high-temperature air is initially cooled by passing through the primary evaporator 05 and its circulation, and then sequentially sweeps through the secondary evaporator 06 and the tertiary evaporator 07. According to the principle of the primary heat exchange cycle, the high-temperature air is finally cooled. The cooling water flows in from the cooling water inlet 18 at the bottom of the tertiary condenser 04, rises to the cooling water outlet 19 at the top of the tertiary condenser 04 in a countercurrent manner, and then flows into the cooling water inlet 18 at the bottom of the secondary condenser 03 through the second connecting pipe 15. In this way, the cooling water further passes through the secondary condenser 03, the first connecting pipe 14, and the primary condenser 02, and finally flows out from the cooling water outlet 19 at the top of the first-stage condenser 02. The cooling water sequentially takes away the heat generated by the condensation of the refrigerant medium in the heat pipe condensation section of the tertiary condenser 04, the secondary condenser 03 and the primary condenser 02 in a series manner, thereby achieving a cooling effect and improving the reliability and safety of the entire system.

[0048] In addition, in this embodiment, the heat dissipation effect of the gas-liquid heat exchanger coupled with the multi-stage separation heat pipe and the plate heat exchanger is also tested. Figure 6 As shown, when the hot air inlet temperature is about 70°C, the hot air is inhaled and passed through the multi-stage heat exchange cycle in the radiator shown in this embodiment. After heat exchange with the refrigerant medium, the temperature of the hot air drops to about 30°C and is output. The average temperature drop reaches 40°C, and the peak temperature drop even reaches more than 40°C. The hot air after cooling treatment re-enters the computer room, which can effectively reduce the ambient temperature of the computer room where the motor and the compressor are located, thereby ensuring that the motor and the compressor maintain efficient operation at any time point.

[0049] Among them, in the process of injecting cooling water into the condenser to participate in the multi-stage heat exchange cycle, the cooling water introduced was continuously maintained at around 27°C. As the experiment progressed, the temperature of the output cooling water was only between 30°C and 35°C, and the fluctuation range was small. This shows that during the heat exchange of the cooling water in the condenser, although its temperature has risen, it is still at a relatively low level as a whole, which can ensure a higher heat exchange efficiency.

[0050] In summary, the gas-liquid heat exchanger coupled with the multi-stage separated heat pipe and the plate heat exchanger shown in this embodiment adopts an innovative multi-stage evaporator-condenser mode, which has three independent evaporators, which do not affect each other during operation. The three condensers are connected by two connecting pipes, and the three condensers are connected in series by cooling water to take away the heat released when the gaseous working fluid is cooled and condensed. The temperature of the hot fluid drops significantly after passing through the three-stage evaporation device, thereby having an excellent cooling effect. In addition, this embodiment can also change the number of evaporation device-condensation device stages according to the actual heat exchange requirements of the air compressor of the power plant, and increase or decrease the number of heat exchange cycles in turn. Therefore, the gas-liquid heat exchanger shown in this embodiment is adopted to achieve the purposes of high efficiency, energy saving, compact structure and small footprint.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0052] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A gas-liquid heat exchanger coupled with a multi-stage separation microchannel heat pipe and a plate heat exchanger, characterized in that: The gas-liquid heat exchanger comprises at least two stages of heat exchange devices arranged in series; Wherein, the heat exchange device comprises an evaporation mechanism, an ascending pipe, a condensing mechanism and a descending pipe, and the evaporation mechanism, the ascending pipe, the condensing mechanism and the descending pipe are sequentially connected to form a heat exchange cycle; The gas-liquid heat exchanger also includes a drainage device, which is arranged after the evaporation mechanism and is used to draw high-temperature air through the evaporation mechanism.

2. The gas-liquid heat exchanger coupled with a multi-stage separation microchannel heat pipe and a plate heat exchanger according to claim 1, characterized in that: The gas-liquid heat exchanger comprises a three-stage heat exchange device, wherein: The evaporation mechanism includes a first-stage evaporator, a second-stage evaporator and a third-stage evaporator which are stacked, each including a heat dissipation fin and a microchannel heat pipe, wherein the microchannel heat pipe is filled with a refrigerant medium; The riser includes a primary riser, a secondary riser and a tertiary riser; The condensing mechanism comprises a first-stage condenser, a second-stage condenser and a third-stage condenser arranged in parallel, and all of them are plate-type radiators; The downcomer comprises a primary downcomer, a secondary downcomer and a tertiary downcomer; Among them, the first-stage evaporator, the first-stage riser, the first-stage condenser and the first-stage downtube are connected to form a first-stage heat exchange cycle, the second-stage evaporator, the second-stage riser, the second-stage condenser and the second-stage downtube are connected to form a second-stage heat exchange cycle, and the third-stage evaporator, the third-stage riser, the third-stage condenser and the third-stage downtube are connected to form a third-stage heat exchange cycle.

3. The gas-liquid heat exchanger coupled with a multi-stage separation microchannel heat pipe and a plate heat exchanger according to claim 2, characterized in that: In the first-stage evaporator, the second-stage evaporator and the third-stage evaporator, a plurality of microchannel heat pipes are provided to form an evaporator frame, and the heat dissipation fins are arranged in a bent shape in the evaporator frame.

4. The gas-liquid heat exchanger of the multi-stage separation microchannel heat pipe coupled with the plate heat exchanger according to claim 2, characterized in that: The first-stage condenser, the second-stage condenser and the third-stage condenser are arranged side by side on the first mounting plate.

5. The gas-liquid heat exchanger of the multi-stage separation microchannel heat pipe coupled with the plate heat exchanger according to claim 4, characterized in that: A first connecting pipe is arranged in series between the first-stage condenser and the second-stage condenser, and a second connecting pipe is arranged in series between the second-stage condenser and the third-stage condenser.

6. The gas-liquid heat exchanger coupled with a multi-stage separation microchannel heat pipe and a plate heat exchanger according to claim 5, characterized in that: The first-level riser is connected between the gaseous working medium output end of the first-level evaporator and the top of the first-level condenser, and the first-level downcomer is connected between the bottom of the first-level condenser and the medium reflux section of the first-level evaporator; The secondary ascending pipe is connected between the gaseous working medium output end of the secondary evaporator and the top of the secondary condenser, and the secondary descending pipe is connected between the bottom of the secondary condenser and the reflux section of the secondary evaporator; The three-stage ascending pipe is connected between the gaseous working medium output end of the three-stage evaporator and the top of the three-stage condenser, and the three-stage descending pipe is connected between the bottom of the three-stage condenser and the reflux section of the three-stage evaporator.

7. The gas-liquid heat exchanger of the multi-stage separation microchannel heat pipe coupled with the plate heat exchanger according to claim 6, characterized in that: A cooling water outlet is also provided at the top of the first-stage condenser, and a cooling water inlet is also provided at the bottom of the third-stage condenser.

8. The gas-liquid heat exchanger of the multi-stage separation microchannel heat pipe coupled with the plate heat exchanger according to any one of claims 4 to 7, characterized in that: The drainage device is arranged on a second mounting plate, and the second mounting plate is arranged at the bottom of the first mounting plate and connected to the first mounting plate; A first support plate is provided between the connection portion between the first mounting plate and the second mounting plate and the evaporation mechanism, and a second support plate is provided between an end of the second mounting plate away from the first mounting plate and the evaporation mechanism.

9. The gas-liquid heat exchanger of the multi-stage separation microchannel heat pipe coupled with the plate heat exchanger according to claim 8, characterized in that: The primary evaporator, the second evaporator, and the third evaporator are stacked, and the third evaporator is disposed toward the drainage device to be connected to the first support plate and the second support plate.

10. The gas-liquid heat exchanger of the multi-stage separation microchannel heat pipe coupled with the plate heat exchanger according to claim 9, characterized in that: The air guide device is an axial flow fan, which is used to draw high-temperature air through the evaporation mechanism.

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