Thermosiphon radiator for accelerating heat exchange

Abstract

A water pump and a water tank are arranged between an evaporator and a condenser, the condenser is provided with a first condensation chamber and a second condensation chamber which are oppositely separated, and the evaporator is provided with an evaporation chamber. The connecting pipe set comprises a first backflow pipe, a second backflow pipe, an acceleration backflow connecting pipe and at least one gas conveying pipe, one end of the gas conveying pipe is connected with the evaporation cavity, the other end of the gas conveying pipe is connected with the first condensation cavity and the second condensation cavity, one end of the first backflow pipe is connected with the water tank, and the other end of the first backflow pipe is connected with the second condensation cavity. One end of the second backflow pipe is connected with the water tank, the other end of the second backflow pipe is connected with the second condensation cavity, one end of the acceleration backflow connecting pipe is connected with the water tank, and the other end of the acceleration backflow connecting pipe is connected with the evaporation cavity. Flow and circulation speed of cooling liquid are improved, heat exchange is accelerated, thermal resistance is reduced, circulation loops are increased, and heat dissipation capacity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermosiphon radiators, in particular to a thermosiphon radiator for accelerating heat exchange. Background Art

[0002] A thermosiphon radiator utilizes the thermosiphon effect to generate its own circulating flow of coolant within the thermosiphon radiator, thereby conducting heat from a high-temperature area to a low-temperature area to achieve the purpose of heat dissipation. A traditional thermosiphon radiator is provided with an evaporator and a condenser, and the evaporator and the condenser are connected by an air delivery pipe and a return pipe. The air delivery pipe must be arranged above the return pipe, and the gaseous coolant in the condenser liquefies and then flows back to the evaporator by gravity. Therefore, a certain height difference is required between the evaporator and the condenser. The greater the height difference, the faster the return speed of the coolant, and the faster the heat exchange speed. However, the smaller the height difference, the slower the return speed of the coolant, and the slower the heat exchange speed accordingly; since thermosiphon radiators are often used in servers, the vertical installation space within the server is limited, resulting in a small height difference between the evaporator and the condenser, a slow heat exchange speed, and poor heat dissipation effect; moreover, the condenser of the traditional thermosiphon radiator has only one condensation chamber, forming a circular circulation loop, and the coolant only circulates within one circulation loop, with a slow circulation speed, thereby further resulting in a slow heat exchange speed, a high thermal resistance value, and poor heat dissipation capacity;

[0003] On the other hand, the traditional return pipe is directly connected to the evaporator. As Figure 7 shown, the returned coolant can only enter the evaporator through one hole, and the coolant is likely to accumulate in the return pipe, reducing the flow rate, resulting in a slow circulation speed of the coolant and poor heat dissipation performance. Therefore, it is necessary to make improvements. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a thermosiphon radiator for accelerating heat exchange, which can improve the flow rate and circulation speed of the coolant, accelerate heat exchange, reduce the thermal resistance value, increase the circulation loop, improve the heat dissipation capacity, and does not require a large height difference between the evaporator and the condenser, saving the vertical installation space.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a thermosiphon radiator for accelerating heat exchange, including an evaporator and a condenser. The evaporator and the condenser are connected by a connecting pipe group. A water pump and a water tank are arranged between the evaporator and the condenser. The condenser is provided with two relatively partitioned first condensation chambers and second condensation chambers. The evaporator is provided with an evaporation chamber.

[0006] The connecting pipe group includes a first return pipe, a second return pipe, an accelerating return connecting pipe, and at least one gas transmission pipe. One end of the gas transmission pipe is connected to the evaporation chamber, and the other end is respectively connected to the first condensation chamber and the second condensation chamber. One end of the first return pipe is connected to the water tank, and the other end is connected to the first condensation chamber. One end of the second return pipe is connected to the water tank, and the other end is connected to the second condensation chamber. One end of the accelerating return connecting pipe is connected to the water tank, and the other end is connected to the evaporation chamber. A water pump is arranged on the accelerating return connecting pipe. The first condensation chamber, the first return pipe, the water tank, the accelerating return connecting pipe, the evaporation chamber, and the gas transmission pipe form a first circulation loop. The second condensation chamber, the second return pipe, the water tank, the accelerating return connecting pipe, the evaporation chamber, and the gas transmission pipe form a second circulation loop. A coolant is provided in the first circulation loop and the second circulation loop.

[0007] In a further technical solution, a plurality of evaporation shovel teeth are arranged in the evaporation chamber. The evaporation shovel teeth are arranged at intervals, and a vertical evaporation flow channel is formed between two adjacent evaporation shovel teeth. Two horizontal lower evaporation flow channels are respectively arranged between the left and right sides of each evaporation shovel tooth and the inner walls of the left and right sides of the evaporation chamber. The left and right sides of each vertical evaporation flow channel are respectively communicated with the two horizontal lower evaporation flow channels;

[0008] A plurality of condensation shovel teeth are respectively arranged in the first condensation chamber and the second condensation chamber. The condensation shovel teeth are arranged at intervals and horizontally penetrate the first condensation chamber and the second condensation chamber. A horizontal condensation flow channel is formed between two adjacent condensation shovel teeth.

[0009] In a further technical solution, the condenser includes an upper fin heat dissipation group, a lower fin heat dissipation group, a first condensation box, and a second condensation box. The first condensation box and the second condensation box are arranged side by side. The upper fin heat dissipation group is arranged above the first condensation box and the second condensation box. The lower fin heat dissipation group is arranged below the first condensation box and the second condensation box. A first condensation chamber is arranged inside the first condensation box, and a second condensation chamber is arranged inside the second condensation box.

[0010] In a further technical solution, a gas transmission connection tee is arranged between the first condensation box and the second condensation box. A shunt chamber is arranged inside the gas transmission connection tee. An air outlet for shunt is respectively arranged on the left and right sides of the lower part of the gas transmission connection tee. A shunt air inlet is arranged at the end of the gas transmission connection tee. The shunt air inlet is connected to the gas transmission pipe,

[0011] A condensation air inlet is respectively arranged on the upper parts of the adjacent ends of the first condensation box and the second condensation box. A condensation liquid outlet is respectively arranged on the lower parts of the remote ends of the first condensation box and the second condensation box. The two air outlets for shunt are respectively connected to the two condensation air inlets.

[0012] In a further technical solution, a condensation connecting piece is respectively arranged between the first condensation box and the first return pipe and between the second condensation box and the second return pipe. A cooling chamber is arranged inside the condensation connecting piece. A return liquid inlet is arranged at the upper part of the condensation connecting piece. A return liquid outlet is arranged at the end of the condensation connecting piece. The return liquid inlets of the two condensation connecting pieces are respectively connected to the condensation liquid outlets of the first condensation box and the second condensation box. The return liquid outlets of the two condensation connecting pieces are respectively connected to the first return pipe and the second return pipe. One end of each horizontal condensation flow channel communicates with the cooling chamber, and the other end communicates with the diversion chamber.

[0013] In a further technical solution, both the first condensation box and the second condensation box include a condensation box body and a condensation upper cover. The condensation upper cover is covered on the upper part of the condensation box body. The condensation air inlet is arranged on the condensation upper cover, and the condensation liquid outlet is arranged at the lower part of the condensation box body;

[0014] The water tank includes a box body and a box cover. The box cover is covered on the upper part of the box body. One water inlet is respectively arranged on the left and right sides of the box body, and a water outlet is arranged on the front side of the box body. The two water inlets are respectively connected to the first return pipe and the second return pipe. The water outlet is connected to the accelerated return connecting pipe. A condensation bell mouth is respectively arranged at the condensation liquid outlet and the water outlet;

[0015] The upper fin heat dissipation group includes an upper substrate and a plurality of upper fins. The upper fins are arranged at intervals. The upper ends of the upper fins are fixedly welded to the upper substrate, and the lower ends of the upper fins are respectively fixedly welded to the corresponding first condensation box, second condensation box and gas transmission connection tee;

[0016] The lower fin heat dissipation group includes a lower substrate and a plurality of lower fins. The lower fins are arranged at intervals. The upper ends of the lower fins are respectively fixedly welded to the corresponding first condensation box, second condensation box and gas transmission connection tee. The lower ends of the lower fins are fixedly adhered to the lower substrate through heat-conducting glue.

[0017] In a further technical solution, the evaporator includes an evaporation upper cover, an evaporation lower seat and a fixing plate. The evaporation lower seat is fixedly installed on the fixing plate by screws. The evaporation upper cover is welded to the upper part of the evaporation lower seat. An evaporation chamber is arranged inside the evaporation lower seat. The lower end surface of the evaporation lower seat protrudes from the lower end surface of the fixing plate. The evaporation upper cover is provided with a gas transmission channel and a return channel.

[0018] At least one strip-shaped air outlet hole and a plurality of return liquid inlet holes are formed in the upper part of the evaporation lower seat. The return liquid inlet holes are respectively arranged on the periphery of the strip-shaped air outlet hole. The first end of the gas transmission channel is connected to the gas transmission pipe, and the second end is connected to the strip-shaped air outlet hole. The first end of the return channel is connected to the accelerated return connecting pipe, and the second end is respectively connected to the return liquid inlet holes.

[0019] In a further technical solution, the evaporation lower base includes a top plate, a base body, and a bottom plate. The top plate is welded to the upper part of the base body, and the bottom plate is welded to the lower part of the base body. The lower parts of the respective evaporation shovel teeth are formed on the bottom plate, and the upper parts are in abutting cooperation with the top plate. The evaporation upper cover is welded to the top plate. A strip-shaped air outlet hole is opened in the middle of the top plate, and the respective return liquid inlet holes are opened at the four corners of the top plate. The four return liquid inlet holes are respectively communicated with the ends of the two horizontal lower evaporation channels.

[0020] An air outlet groove with an upward opening is formed in the middle of each evaporation shovel tooth. The respective air outlet grooves form a horizontal upper evaporation channel along the length direction of the strip-shaped air outlet hole. The horizontal upper evaporation channel is located below the strip-shaped air outlet hole. The lower part of the horizontal upper evaporation channel is communicated with the respective vertical evaporation channels, and the upper part of the horizontal upper evaporation channel is connected to the second end of the air delivery channel.

[0021] In a further technical solution, the evaporation upper cover includes an upper connecting convex block and a lower cover plate. The upper connecting convex block is formed on the upper part of the lower cover plate, and the lower cover plate is fixedly welded to the top plate.

[0022] The air delivery channel includes a horizontal air delivery hole and a vertical air delivery hole. The horizontal air delivery hole is opened in the upper part of the upper connecting convex block and horizontally penetrates the upper connecting convex block. The lower part of the horizontal air delivery hole is connected to the upper part of the vertical air delivery hole. One end of the horizontal air delivery hole is connected to an air delivery pipe, and a liquid injection pipe is provided at the other end. The lower part of the vertical air delivery hole is connected to the strip-shaped air outlet hole.

[0023] The return channel includes a horizontal return hole and a U-shaped return groove with a downward opening. The horizontal return hole is opened in the lower part of the upper connecting convex block, and the U-shaped return groove is opened in the lower cover plate. One end of the horizontal return hole is connected to the middle of the U-shaped return groove, and the other end is connected to an accelerated return connecting pipe. The U-shaped return groove is respectively communicated with the respective return liquid inlet holes.

[0024] In a further technical solution, the evaporation upper cover is an evaporation upper cover made of copper, the evaporation lower base is an evaporation lower base made of copper, the evaporation shovel teeth are evaporation shovel teeth made of copper, the liquid injection pipe is a liquid injection pipe made of copper, and a liquid injection valve is provided on the liquid injection pipe. The condenser is a condenser made of aluminum, the condensation shovel teeth are condensation shovel teeth made of aluminum, the first return pipe and the second return pipe are both aluminum pipes, evaporation tower heads made of copper are respectively provided at the first ends of the air delivery channel and the return channel, and the accelerated return connecting pipe and the air delivery pipe are both flexible hoses.

[0025] After adopting the above structure, the advantages of the present utility model compared with the prior art are as follows: By forming a first circulation loop and a second circulation loop between the first condensation chamber and the second condensation chamber and the evaporation chamber respectively, multiple-path circulation cooling is achieved, improving the condensation speed; By means of the water tank and the water pump, the flow rate and circulation speed of the coolant are accelerated, heat exchange is accelerated, and the heat dissipation capacity is improved. There is no need for gravity backflow, saving vertical installation space; By means of the strip-shaped air outlet holes, the air flow rate of the gaseous coolant is increased, and by providing a plurality of reflux liquid inlet holes, the reflux speed of the liquid coolant is increased, preventing the accumulation of the liquid coolant, and further improving the circulation speed and flow rate of the coolant; The evaporator made of copper can improve the heat conduction performance, accelerate the evaporation speed of the coolant, and further improve the heat exchange speed, while the condenser made of aluminum can reduce the cost. The combination of copper and aluminum improves the heat dissipation effect while reducing the cost. Brief Description of the Drawings

[0026] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0027] Figure 1 is a schematic structural diagram of the present utility model;

[0028] Figure 2 is an exploded view of the evaporator of the present utility model;

[0029] Figure 3 is a cross-sectional view of the evaporator of the present utility model;

[0030] Figure 4 is a schematic structural diagram of the upper evaporation cover of the present utility model;

[0031] Figure 5 is an exploded view of the condenser of the present utility model;

[0032] Figure 6 is a cross-sectional view of the condenser of the present utility model;

[0033] Figure 7 is a schematic diagram of the flow of the coolant in the evaporation chamber in the prior art;

[0034] Figure 8 is a schematic diagram of the flow of the coolant in the evaporation chamber of the present utility model;

[0035] Figure 9 is a change curve graph of the total thermal resistance value and the pressure change value of the present utility model under different air volumes;

[0036] Figure 10 is a change curve graph of the contact thermal resistance value of the present utility model under different air volumes.

[0037] In the figure:

[0038] 1 Evaporation upper cover, 11 Gas transmission channel, 111 Horizontal gas injection hole, 112 Vertical gas injection hole, 12 Return channel, 121 Horizontal return hole, 122 U-shaped return groove, 13 Upper connecting bump, 14 Lower cover plate, 15 Liquid injection pipe, 151 Liquid injection valve;

[0039] 2 Evaporation lower seat, 21 Top plate, 211 Strip-shaped air outlet hole, 212 Return inlet hole, 22 Seat body, 23 Bottom plate, 24 Evaporation shovel teeth, 25 Horizontal upper evaporation flow channel, 26 Vertical evaporation flow channel, 27 Horizontal lower evaporation flow channel;

[0040] 3 Fixed plate;

[0041] 41 Upper fin heat dissipation group, 411 Upper substrate, 412 Upper fins, 42 Lower fin heat dissipation group, 421 Lower substrate, 422 Lower fins;

[0042] 51 First condensation box, 52 Second condensation box, 53 Condensation air inlet, 54 Condensation liquid outlet, 55 Condensation shovel teeth, 56 Horizontal condensation flow channel;

[0043] 61 Gas transmission connection tee, 611 Split air outlet, 612 Split air inlet, 62 Condensation connector, 621 Return inlet, 622 Return outlet;

[0044] 7 Connection pipe group, 71 First return pipe, 72 Second return pipe, 73 Accelerated return connection pipe, 74 Gas transmission pipe, 75 Condensation tower head, 76 Evaporation tower head;

[0045] 81 Water pump, 82 Water tank, 821 Tank body, 822 Water inlet, 823 Water outlet, 824 Tank cover. Specific implementation mode

[0046] The following is only a preferred embodiment of the present invention, and does not limit the protection scope of the present invention accordingly.

[0047] A thermosyphon radiator for accelerating heat exchange, as Figures 1 to 6As shown in the figure, it includes an evaporator and a condenser. The evaporator and the condenser are connected by a connecting pipe group 7. A water pump 81 and a water tank 82 are arranged between the evaporator and the condenser. The condenser is provided with a first condensation chamber and a second condensation chamber which are relatively partitioned. The evaporator is provided with an evaporation chamber. The connecting pipe group 7 includes a first return pipe 71, a second return pipe 72, an accelerating return connecting pipe 73 and at least one gas transmission pipe 74. One end of the gas transmission pipe 74 is connected to the evaporation chamber, and the other end is respectively connected to the first condensation chamber and the second condensation chamber. One end of the first return pipe 71 is connected to the water tank 82, and the other end is connected to the first condensation chamber. One end of the second return pipe 72 is connected to the water tank 82, and the other end is connected to the second condensation chamber. One end of the accelerating return connecting pipe 73 is connected to the water tank 82, and the other end is connected to the evaporation chamber. The water pump 81 is arranged on the accelerating return connecting pipe 73. The first condensation chamber, the first return pipe 71, the water tank 82, the accelerating return connecting pipe 73, the evaporation chamber and the gas transmission pipe 74 form a first circulation loop. The second condensation chamber, the second return pipe 72, the water tank 82, the accelerating return connecting pipe 73, the evaporation chamber and the gas transmission pipe 74 form a second circulation loop. A coolant is arranged in the first circulation loop and the second circulation loop. For the traditional thermosyphon radiator, the coolant only relies on gravity to return. The return speed of the coolant is restricted by the height difference between the evaporator and the condenser, and a large installation space is required. There is only one condensation chamber, and the coolant circulates in a circular loop, resulting in a slow condensation speed, an increasing thermal resistance value, and a poor heat dissipation effect. However, in the present utility model, the first condensation chamber and the second condensation chamber respectively form a first circulation loop and a second circulation loop with the evaporation chamber, and multiple-circulation cooling is carried out to improve the condensation speed. The flow rate and circulation speed of the coolant are accelerated through the water tank 82 and the water pump 81, the heat exchange is accelerated, the heat dissipation capacity is improved, the thermal resistance value is low, and there is no need to rely on gravity to return, saving the vertical installation space.

[0048] Specifically, a plurality of evaporation shovel teeth 24 are arranged in the evaporation chamber. The evaporation shovel teeth 24 are arranged at intervals, and a vertical evaporation flow channel 26 is formed between two adjacent evaporation shovel teeth 24. Two horizontal lower evaporation flow channels 27 are arranged between the left and right sides of each evaporation shovel tooth 24 and the inner walls of the left and right sides of the evaporation chamber respectively. The left and right sides of each vertical evaporation flow channel 26 are respectively communicated with the two horizontal lower evaporation flow channels 27. A plurality of condensation shovel teeth 55 are respectively arranged in the first condensation chamber and the second condensation chamber. The condensation shovel teeth 55 are arranged at intervals and horizontally penetrate through the first condensation chamber and the second condensation chamber. A horizontal condensation flow channel 56 is formed between two adjacent condensation shovel teeth 55. The evaporation shovel teeth 24 and the condensation shovel teeth 55 respectively support the evaporation chamber, the first condensation chamber and the second condensation chamber, improving the pressure-bearing capacity, preventing deformation under high pressure, and improving the reliability and stability. The vertical evaporation flow channel 26 can control the upward movement of the gaseous coolant, reducing the movement of the gaseous coolant in the horizontal direction. The horizontal condensation flow channel 56 guides the liquid coolant in the horizontal direction, improving the circulation speed and reducing the thermal resistance value.

[0049] Specifically, the condenser includes an upper fin heat dissipation group 41, a lower fin heat dissipation group 42, a first condensation box 51 and a second condensation box 52. The first condensation box 51 and the second condensation box 52 are arranged side by side. The upper fin heat dissipation group 41 is arranged on the upper parts of the first condensation box 51 and the second condensation box 52. The lower fin heat dissipation group 42 is arranged on the lower parts of the first condensation box 51 and the second condensation box 52. A first condensation chamber is arranged inside the first condensation box 51, and a second condensation chamber is arranged inside the second condensation box 52. The upper fin heat dissipation group 41 and the lower fin heat dissipation group 42 simultaneously cover the first condensation box 51 and the second condensation box 52, with a more compact structure, reducing the volume and the requirement for the installation space. By covering the upper and lower parts of the first condensation box 51 and the second condensation box 52 respectively with the upper fin heat dissipation group 41 and the lower fin heat dissipation group 42, the condensation heat dissipation area is increased and the condensation speed is improved.

[0050] Specifically, an air delivery connection tee 61 is arranged between the first condensation box 51 and the second condensation box 52. A flow splitting chamber is arranged inside the air delivery connection tee 61. One flow splitting air outlet 611 is respectively arranged on the left and right sides of the lower part of the air delivery connection tee 61. A flow splitting air inlet 612 is arranged at the end of the air delivery connection tee 61. The flow splitting air inlet 612 is connected with an air delivery pipe 74. A condensation air inlet 53 is respectively arranged on the upper parts of the adjacent ends of the first condensation box 51 and the second condensation box 52. A condensation liquid outlet 54 is respectively arranged on the lower parts of the remote ends of the first condensation box 51 and the second condensation box 52. The two flow splitting air outlets 611 are respectively connected with the two condensation air inlets 53. By connecting the air delivery pipe 74 with the first condensation box 51 and the second condensation box 52 simultaneously through the air delivery connection tee 61, only one air delivery pipe 74 is needed for connection, simplifying the structure and reducing the cost.

[0051] Specifically, a condensation connector 62 is respectively arranged between the first condensation box 51 and the first return pipe 71, and between the second condensation box 52 and the second return pipe 72. A cooling chamber is arranged inside the condensation connector 62. A return liquid inlet 621 is arranged at the upper part of the condensation connector 62. A return liquid outlet 622 is arranged at the end of the condensation connector 62. The return liquid inlets 621 of the two condensation connectors 62 are respectively connected to the condensation liquid outlets 54 of the first condensation box 51 and the second condensation box 52. The return liquid outlets 622 of the two condensation connectors 62 are respectively connected to the first return pipe 71 and the second return pipe 72. One end of each horizontal condensation channel 56 communicates with the cooling chamber, and the other end communicates with the diversion chamber. The return liquid inlet 621 of the condensation connector 62 is a strip-shaped hole. The coolant enters the diversion chamber from the gas transmission pipe 74 and then enters each horizontal condensation channel 56 of the first condensation box 51 and the second condensation box 52 from the condensation gas inlets 53 respectively through the two diversion gas outlets 611. After the coolant is liquefied, it enters the cooling chamber through the return liquid inlets 621 from the condensation liquid outlets 54 of each horizontal condensation channel 56 to converge. The cooling chamber plays a role of confluence and buffering, preventing congestion when the coolant in each horizontal condensation channel 56 flows out, and further improving the circulation speed.

[0052] Specifically, both the first condensation box 51 and the second condensation box 52 include a condensation box body and a condensation upper cover. The condensation upper cover is arranged on the upper part of the condensation box body. The condensation gas inlet 53 is arranged on the condensation upper cover. The condensation liquid outlet 54 is arranged on the lower part of the condensation box body; the water tank 82 includes a box body 821 and a box cover 824. The box cover 824 is arranged on the upper part of the box body 821. An inlet 822 is respectively arranged on the left and right sides of the box body 821. An outlet 823 is arranged on the front side of the box body 821. The two inlets 822 are respectively connected to the first return pipe 71 and the second return pipe 72. The outlet 823 is connected to the acceleration return connection pipe 73. A condensation bellows head 75 is respectively arranged at the condensation liquid outlet 54 and the outlet 823; the upper fin heat dissipation group 41 includes an upper substrate 411 and a plurality of upper fins 412. The upper fins 412 are arranged at intervals. The upper end parts of the upper fins 412 are welded and fixed to the upper substrate 411. The lower end parts of the upper fins 412 are respectively welded and fixed to the corresponding first condensation box 51, second condensation box 52 and the gas transmission connection tee 61; the lower fin heat dissipation group 42 includes a lower substrate 421 and a plurality of lower fins 422. The lower fins 422 are arranged at intervals. The upper end parts of the lower fins 422 are respectively welded and fixed to the corresponding first condensation box 51, second condensation box 52 and the gas transmission connection tee 61. The lower end parts of the lower fins 422 are pasted and fixed to the lower substrate 421 through heat-conducting glue. The condensation box body and the condensation upper cover are welded and fixed, which is convenient for installing each condensation shovel tooth 55. The condenser is installed on the chassis through the lower substrate 421. The heat-conducting glue can increase the heat-conducting performance, which is convenient for guiding the heat to the chassis and improving the heat dissipation effect.

[0053] Specifically, the evaporator includes an evaporation upper cover 1, an evaporation lower base 2, and a fixing plate 3. The evaporation lower base 2 is fixedly installed on the fixing plate 3 by screws. The evaporation upper cover 1 is welded to the upper part of the evaporation lower base 2. An evaporation chamber is arranged inside the evaporation lower base 2. The lower end surface of the evaporation lower base 2 protrudes from the lower end surface of the fixing plate 3. The evaporation upper cover 1 is provided with an air delivery channel 11 and a reflux channel 12. At least one strip-shaped air outlet hole 211 and a plurality of reflux liquid inlet holes 212 are formed in the upper part of the evaporation lower base 2. Each reflux liquid inlet hole 212 is respectively arranged on the periphery of the strip-shaped air outlet hole 211. The first end of the air delivery channel 11 is connected to the air delivery pipe 74, and the second end is connected to the strip-shaped air outlet hole 211. The first end of the reflux channel 12 is connected to the acceleration reflux connecting pipe 73, and the second end is respectively connected to each reflux liquid inlet hole 212. As Figure 7 shown, the traditional evaporator has only one reflux liquid inlet hole 212. After the coolant enters the evaporation chamber from the reflux liquid inlet hole 212, it still needs to flow to the periphery of the evaporation chamber, and finally flow to the middle of the evaporation chamber to fill the entire evaporation chamber. As Figure 8 shown, the present utility model is provided with a plurality of reflux liquid inlet holes 212, which directly flow from the periphery to the center of the evaporation chamber, improving the reflux speed, preventing the accumulation of liquid coolant, and further improving the circulation speed and flow rate of the coolant.

[0054] Specifically, the evaporation lower base 2 includes a top plate 21, a seat body 22, and a bottom plate 23. The top plate 21 is welded to the upper part of the seat body 22, and the bottom plate 23 is welded to the lower part of the seat body 22. The lower parts of the respective evaporation shovel teeth 24 are formed on the bottom plate 23, and the upper parts are in abutting cooperation with the top plate 21. The evaporation upper cover 1 is welded to the top plate 21. The strip-shaped air outlet hole 211 is formed in the middle of the top plate 21. Each reflux liquid inlet hole 212 is respectively formed at the four corners of the top plate 21. The four reflux liquid inlet holes 212 are respectively communicated with the ends of the two horizontal lower evaporation flow channels 27. An air outlet groove with an upward opening is formed in the middle of each evaporation shovel tooth 24. Each air outlet groove forms a horizontal upper evaporation flow channel 25 along the length direction of the strip-shaped air outlet hole 211. The horizontal upper evaporation flow channel 25 is located below the strip-shaped air outlet hole 211. The lower part of the horizontal upper evaporation flow channel 25 is communicated with each vertical evaporation flow channel 26. The upper part of the horizontal upper evaporation flow channel 25 is connected to the second end of the air delivery channel 11. The coolant respectively enters the horizontal lower evaporation flow channels 27 from the four reflux liquid inlet holes 212. The coolant in the horizontal lower evaporation flow channels 27 flows into each vertical evaporation flow channel 26. After the coolant in each vertical evaporation flow channel 26 is vaporized, it enters the horizontal upper evaporation flow channel 25 and enters the air delivery channel 11 through the strip-shaped air outlet hole 211, reducing the flow resistance of the coolant, improving the circulation speed, and reducing the thermal resistance value.

[0055] Specifically, the evaporation upper cover 1 includes an upper connecting bump 13 and a lower cover plate 14. The upper connecting bump 13 is formed on the upper part of the lower cover plate 14, and the lower cover plate 14 is fixedly welded to the top plate 21. The gas transmission channel 11 includes a horizontal gas transmission hole 111 and a vertical gas transmission hole 112. The horizontal gas transmission hole 111 is opened on the upper part of the upper connecting bump 13 and horizontally penetrates the upper connecting bump 13. The lower part of the horizontal gas transmission hole 111 is connected to the upper part of the vertical gas transmission hole 112. One end of the horizontal gas transmission hole 111 is connected to the gas transmission pipe 74, and a liquid injection pipe 15 is arranged at the other end. The lower part of the vertical gas transmission hole 112 is connected to the strip-shaped air outlet hole 211. The reflux channel 12 includes a horizontal reflux hole 121 and a U-shaped reflux groove 122 with an opening facing downwards. The horizontal reflux hole 121 is opened on the lower part of the upper connecting bump 13, and the U-shaped reflux groove 122 is opened on the lower cover plate 14. One end of the horizontal reflux hole 121 is connected to the middle part of the U-shaped reflux groove 122, and the other end is connected to the accelerated reflux connecting pipe 73. The U-shaped reflux groove 122 is respectively communicated with each reflux liquid inlet hole 212. The gaseous coolant enters the vertical gas transmission hole 112 from the strip-shaped air outlet hole 211 and then enters the horizontal gas transmission hole 111. The liquid coolant enters the horizontal reflux hole 121 from the accelerated reflux connecting pipe 73 and then enters the U-shaped reflux groove 122 from the horizontal reflux hole 121, so as to enter the evaporation chamber through the four reflux liquid inlet holes 212, reducing the flow distance of the coolant, making the structure more compact, reducing the volume and improving the heat dissipation effect.

[0056] Specifically, the evaporation upper cover 1 is an evaporation upper cover 1 made of copper, the evaporation lower base 2 is an evaporation lower base 2 made of copper, the evaporation shovel tooth 24 is an evaporation shovel tooth 24 made of copper, the liquid injection pipe 15 is a liquid injection pipe 15 made of copper, and a liquid injection valve 151 is provided on the liquid injection pipe 15. The condenser is a condenser made of aluminum, the condensation shovel tooth 55 is a condensation shovel tooth 55 made of aluminum, the first return pipe 71 and the second return pipe 72 are both aluminum pipes, and evaporation tower heads 76 made of copper are respectively provided at the first ends of the gas transmission channel 11 and the return channel 12. The accelerated return connection pipe 73 and the gas transmission pipe 74 are both hoses. The evaporator made of copper can improve the heat conduction performance, accelerate the evaporation speed of the coolant, and further improve the heat exchange speed, while the condenser made of aluminum can reduce the cost. The combination of copper and aluminum can improve the heat dissipation effect while reducing the cost. The materials of the evaporation upper cover 1, the evaporation lower base 2, and the evaporation shovel tooth 24 are all C1100, the material of the liquid injection pipe 15 is Cu, and the evaporation upper cover 1, the evaporation lower base 2, the evaporation shovel tooth 24, and the liquid injection pipe 15 are welded into one body by copper brazing process; the materials of the upper fin 412 and the lower fin 422 are AL1100, and the materials of the box cover 824, the upper substrate 411, the lower substrate 421, and the condensation upper cover are all AL3003 + AL4343 single-sided composite materials. The materials of the first return pipe 71, the second return pipe 72, the evaporation tower head 76, the condensation box body, the condensation connecting piece 62, the gas transmission connection tee 61, and the box body 821 are all AL3003, and are welded by aluminum brazing process. The accelerated return connection pipe 73 and the gas transmission pipe 74 are both hoses, which are convenient for connecting copper and aluminum materials, with simple production process, high production efficiency, and low cost.

[0057] The test was carried out under a heat flux of 1500W.

[0058] When the air volume blown to the condenser is 100CFM, the total thermal resistance Rtot is 0.0458℃ / W, the contact thermal resistance Rc is 0.0608℃ / W, and the internal pressure change value △P of the thermosyphon radiator is 18.5pa;

[0059] When the air volume is 150CFM, Rtot is 0.041℃ / W, the contact thermal resistance Rc is 0.056℃ / W, and △P is 28.9pa;

[0060] When the air volume is 200CFM, Rtot is 0.0388℃ / W, the contact thermal resistance Rc is 0.0538℃ / W, and △P is 39.9pa;

[0061] When the air volume is 250CFM, Rtot is 0.0375℃ / W, the contact thermal resistance Rc is 0.0525℃ / W, and △P is 51.6pa. The change curves of the total thermal resistance Rtot and the pressure change value △P are as Figure 9 shown, and the change curve of the contact thermal resistance Rc is as Figure 10 shown.

[0062] Under the high-speed operation of the water pump 81, the liquid cooling coolant in the first condensation chamber and the second condensation chamber is quickly transported to the evaporation chamber. The temperature difference between the evaporator and the condenser is 8-10°C. Under strong convection, when the heating power is 1500W, the greater the air volume, the lower the thermal resistance value. When the air volume is greater than 100 CFM, the contact thermal resistance value Rc is lower than 0.06°C / W.

[0063] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A thermosyphon radiator for accelerating heat exchange, comprising an evaporator and a condenser, wherein the evaporator and the condenser are connected by a connecting pipe group (7), and is characterized in that: A water pump (81) and a water tank (82) are arranged between the evaporator and the condenser. The condenser is provided with a first condensation chamber and a second condensation chamber which are relatively partitioned. The evaporator is provided with an evaporation chamber. The connecting pipe group (7) includes a first return pipe (71), a second return pipe (72), an accelerating return connecting pipe (73) and at least one gas transmission pipe (74). One end of the gas transmission pipe (74) is connected to the evaporation chamber, and the other end is respectively connected to the first condensation chamber and the second condensation chamber. One end of the first return pipe (71) is connected to the water tank (82), and the other end is connected to the first condensation chamber. One end of the second return pipe (72) is connected to the water tank (82), and the other end is connected to the second condensation chamber. One end of the accelerating return connecting pipe (73) is connected to the water tank (82), and the other end is connected to the evaporation chamber. The water pump (81) is arranged on the accelerating return connecting pipe (73). The first condensation chamber, the first return pipe (71), the water tank (82), the accelerating return connecting pipe (73), the evaporation chamber and the gas transmission pipe (74) form a first circulation loop. The second condensation chamber, the second return pipe (72), the water tank (82), the accelerating return connecting pipe (73), the evaporation chamber and the gas transmission pipe (74) form a second circulation loop. A coolant is arranged in the first circulation loop and the second circulation loop.

2. The thermosyphon radiator for accelerating heat exchange according to claim 1, wherein: A plurality of evaporation shovel teeth (24) are arranged in the evaporation chamber. The evaporation shovel teeth (24) are arranged at intervals. A vertical evaporation flow channel (26) is formed between two adjacent evaporation shovel teeth (24). Two horizontal lower evaporation flow channels (27) are arranged between the left and right sides of each evaporation shovel tooth (24) and the inner walls of the left and right sides of the evaporation chamber respectively. The left and right sides of each vertical evaporation flow channel (26) are respectively communicated with the two horizontal lower evaporation flow channels (27). A plurality of condensation shovel teeth (55) are respectively arranged in the first condensation chamber and the second condensation chamber. The condensation shovel teeth (55) are arranged at intervals and horizontally penetrate through the first condensation chamber and the second condensation chamber. A horizontal condensation flow channel (56) is formed between two adjacent condensation shovel teeth (55).

3. The thermosyphon radiator for accelerating heat exchange according to claim 2, wherein: The condenser includes an upper fin heat dissipation group (41), a lower fin heat dissipation group (42), a first condensation box (51) and a second condensation box (52). The first condensation box (51) and the second condensation box (52) are arranged side by side. The upper fin heat dissipation group (41) is arranged on the upper parts of the first condensation box (51) and the second condensation box (52). The lower fin heat dissipation group (42) is arranged on the lower parts of the first condensation box (51) and the second condensation box (52). The first condensation chamber is arranged inside the first condensation box (51), and the second condensation chamber is arranged inside the second condensation box (52).

4. The thermosyphon radiator for accelerating heat exchange according to claim 3, wherein: A gas transmission connection tee (61) is provided between the first condensation box (51) and the second condensation box (52). A diversion chamber is provided inside the gas transmission connection tee (61). One diversion outlet (611) is provided on each of the left and right sides of the lower part of the gas transmission connection tee (61). A diversion inlet (612) is provided at the end of the gas transmission connection tee (61). The diversion inlet (612) is connected to the gas transmission pipe (74). One condensation inlet (53) is provided on the upper part of each of the adjacent ends of the first condensation box (51) and the second condensation box (52). One condensation liquid outlet (54) is provided on the lower part of each of the opposite ends of the first condensation box (51) and the second condensation box (52). The two diversion outlets (611) are respectively connected to the two condensation inlets (53).

5. The thermosyphon radiator for accelerating heat exchange according to claim 4, wherein: One condensation connector (62) is provided between the first condensation box (51) and the first return pipe (71) and between the second condensation box (52) and the second return pipe (72). A cooling chamber is provided inside the condensation connector (62). A return liquid inlet (621) is provided on the upper part of the condensation connector (62). A return liquid outlet (622) is provided at the end of the condensation connector (62). The return liquid inlets (621) of the two condensation connectors (62) are respectively connected to the condensation liquid outlets (54) of the first condensation box (51) and the second condensation box (52). The return liquid outlets (622) of the two condensation connectors (62) are respectively connected to the first return pipe (71) and the second return pipe (72). One end of each of the horizontal condensation channels (56) communicates with the cooling chamber and the other end communicates with the diversion chamber.

6. The thermosyphon radiator for accelerating heat exchange according to claim 5, wherein: Both the first condensation box (51) and the second condensation box (52) include a condensation box body and a condensation upper cover. The condensation upper cover is disposed on the upper part of the condensation box body. The condensation inlet (53) is provided on the condensation upper cover. The condensation liquid outlet (54) is provided on the lower part of the condensation box body. The water tank (82) includes a box body (821) and a box cover (824). The box cover (824) is disposed on the upper part of the box body (821). One water inlet (822) is provided on each of the left and right sides of the box body (821). A water outlet (823) is provided on the front side of the box body (821). The two water inlets (822) are respectively connected to the first return pipe (71) and the second return pipe (72). The water outlet (823) is connected to the acceleration return connection pipe (73). A condensation bell head (75) is provided at each of the condensation liquid outlet (54) and the water outlet (823). The upper fin heat dissipation group (41) includes an upper substrate (411) and a plurality of upper fins (412). The upper fins (412) are arranged at intervals. The upper ends of the upper fins (412) are fixedly welded to the upper substrate (411). The lower ends of the upper fins (412) are respectively fixedly welded to the corresponding first condensation box (51), second condensation box (52), and the gas transmission connection tee (61). The lower fin heat dissipation group (42) includes a lower substrate (421) and a plurality of lower fins (422). The lower fins (422) are arranged at intervals. The upper ends of the lower fins (422) are respectively welded and fixed to the corresponding first condensation box (51), second condensation box (52) and the gas transmission connection tee (61). The lower ends of the lower fins (422) are fixedly adhered to the lower substrate (421) through heat-conducting glue.

7. The thermosyphon radiator for accelerating heat exchange according to any one of claims 2 to 6, characterized in that: The evaporator includes an evaporation upper cover (1), an evaporation lower base (2) and a fixing plate (3). The evaporation lower base (2) is fixedly installed on the fixing plate (3) by screws. The evaporation upper cover (1) is welded to the upper part of the evaporation lower base (2). The evaporation chamber is arranged in the evaporation lower base (2). The lower end face of the evaporation lower base (2) protrudes from the lower end face of the fixing plate (3). The evaporation upper cover (1) is provided with a gas transmission channel (11) and a reflux channel (12). At least one strip-shaped air outlet hole (211) and a plurality of reflux liquid inlet holes (212) are formed in the upper part of the evaporation lower base (2). The reflux liquid inlet holes (212) are respectively arranged on the periphery of the strip-shaped air outlet hole (211). The first end of the gas transmission channel (11) is connected to the gas transmission pipe (74), and the second end is connected to the strip-shaped air outlet hole (211). The first end of the reflux channel (12) is connected to the accelerated reflux connecting pipe (73), and the second end is respectively connected to the reflux liquid inlet holes (212).

8. The thermosyphon radiator for accelerating heat exchange according to claim 7, wherein: The evaporation lower base (2) includes a top plate (21), a seat body (22) and a bottom plate (23). The top plate (21) is welded to the upper part of the seat body (22). The bottom plate (23) is welded to the lower part of the seat body (22). The lower parts of the evaporation shovel teeth (24) are formed on the bottom plate (23), and the upper parts are in abutting cooperation with the top plate (21). The evaporation upper cover (1) is welded to the top plate (21). The strip-shaped air outlet hole (211) is formed in the middle of the top plate (21). The reflux liquid inlet holes (212) are respectively formed at the four corners of the top plate (21). The four reflux liquid inlet holes (212) are respectively communicated with the ends of the two horizontal lower evaporation channels (27). An air outlet groove with an upward opening is formed in the middle of each evaporation shovel tooth (24). Each air outlet groove forms a horizontal upper evaporation channel (25) along the length direction of the strip-shaped air outlet hole (211). The horizontal upper evaporation channel (25) is located below the strip-shaped air outlet hole (211). The lower part of the horizontal upper evaporation channel (25) is communicated with each vertical evaporation channel (26). The upper part of the horizontal upper evaporation channel (25) is connected to the second end of the gas transmission channel (11).

9. The thermosyphon radiator for accelerating heat exchange according to claim 8, wherein: The evaporation upper cover (1) includes an upper connecting convex block (13) and a lower cover plate (14). The upper connecting convex block (13) is formed on the upper part of the lower cover plate (14). The lower cover plate (14) is welded and fixed to the top plate (21). The gas transmission channel (11) includes a horizontal gas transmission hole (111) and a vertical gas transmission hole (112). The horizontal gas transmission hole (111) is formed in the upper part of the upper connecting bump (13) and horizontally penetrates through the upper connecting bump (13). The lower part of the horizontal gas transmission hole (111) is connected to the upper part of the vertical gas transmission hole (112). One end of the horizontal gas transmission hole (111) is connected to the gas transmission pipe (74), and a liquid injection pipe (15) is provided at the other end. The lower part of the vertical gas transmission hole (112) is connected to the strip-shaped gas outlet hole (211). The reflux channel (12) includes a horizontal reflux hole (121) and a U-shaped reflux groove (122) with an opening facing downwards. The horizontal reflux hole (121) is formed in the lower part of the upper connecting bump (13). The U-shaped reflux groove (122) is formed in the lower cover plate (14). One end of the horizontal reflux hole (121) is connected to the middle part of the U-shaped reflux groove (122), and the other end is connected to the accelerated reflux connecting pipe (73). The U-shaped reflux groove (122) is respectively communicated with each of the reflux liquid inlet holes (212).

10. The thermosyphon radiator for accelerating heat exchange according to claim 9, wherein: The evaporation upper cover (1) is an evaporation upper cover (1) made of copper. The evaporation lower base (2) is an evaporation lower base (2) made of copper. The evaporation shovel tooth (24) is an evaporation shovel tooth (24) made of copper. The liquid injection pipe (15) is a liquid injection pipe (15) made of copper. A liquid injection valve (151) is provided on the liquid injection pipe (15). The condenser is a condenser made of aluminum. The condensation shovel tooth (55) is a condensation shovel tooth (55) made of aluminum. Both the first reflux pipe (71) and the second reflux pipe (72) are aluminum pipes. Evaporation tower heads (76) made of copper are respectively provided at the first ends of the gas transmission channel (11) and the reflux channel (12). The accelerated reflux connecting pipe (73) and the gas transmission pipe (74) are both flexible pipes.

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