Temperature-adjustable heat pipe and control method thereof

Abstract

The invention discloses a temperature-adjustable heat pipe and a control method thereof.The temperature-adjustable heat pipe comprises an evaporation heat exchanger and a condensation heat exchanger, the evaporation heat exchanger is provided with an evaporation opening and a backflow opening, the condensation heat exchanger is provided with an air inlet and a liquid outlet, the evaporation opening is connected with the air inlet through a connecting pipeline, and the backflow opening is connected with the liquid outlet through a connecting pipeline; the evaporation heat exchanger and the condensation heat exchanger are connected into a loop, and the connecting pipeline is provided with an adjusting device, a filling port and / or a transmission part. The heat pipe has the beneficial effects that the evaporation heat exchanger and the condensation heat exchanger are connected to form a loop, the air outlet temperature can be adjusted through the adjusting device or the transmission part arranged on the connecting pipeline, meanwhile, a filling opening can be formed in any connecting pipeline, the whole heat pipe can be filled with media, and operation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and in particular to a temperature-adjustable heat pipe and a control method thereof. Background Art

[0002] At present, as the heat pipe heat exchanger technology becomes more and more mature, heat pipe heat exchangers are playing an increasingly important role in energy-saving applications in power stations, steel, metallurgy, petroleum, chemical industry, building materials, light industry, refrigeration and air conditioning, electronics and other fields. Gravity heat pipe heat exchangers are components that rely on the phase change of their internal working fluid to achieve heat transfer. They are generally composed of a tube shell and an internal working fluid. The tube shell is usually made of metal, with end caps welded at both ends. After the tube is evacuated, a certain working fluid is injected and then sealed.

[0003] Conventional gravity heat pipes usually consist of countless independent heat pipe loops, with many filling loops, and the filling process takes a long time. It is impossible to achieve precise control of the supply air temperature after reheating. If the supply air temperature needs to be precisely controlled, multiple regulating elements are required, which is costly, complex to produce and process, and occupies a large space. For example, the invention patent with the authorization announcement number CN 212006145 U discloses a double-effect gravity heat pipe device for a fresh air air-conditioning unit, which is equipped with multiple independent loops and there is no circulation between the loops. Each loop is equipped with a medium filling valve for filling the medium. The operation is cumbersome and the temperature cannot be controlled. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a temperature-adjustable heat pipe and a control method thereof, which connects multiple independently arranged heat pipe loops into one loop to adjust the temperature of the heat pipe. At the same time, only one filling position is required to realize the medium filling of the entire device, and the heat exchange efficiency is high.

[0005] Specifically, the present invention discloses a temperature-adjustable heat pipe, comprising: an evaporating heat exchanger and a condensing heat exchanger, the evaporating heat exchanger is provided with an evaporation port and a reflux port, the condensing heat exchanger is provided with an air inlet and a liquid outlet, the evaporating port and the air inlet, the reflux port and the liquid outlet are connected through a connecting pipe, so that the evaporating heat exchanger and the condensing heat exchanger are connected into a loop, and the connecting pipe is provided with an adjusting device, a filling port and / or a transmission member.

[0006] The beneficial effect of adopting the above technical solution is that by connecting the evaporating heat exchanger and the condensing heat exchanger into a loop, the air outlet temperature can be adjusted by setting a regulating device or a transmission part on the connecting pipe. At the same time, a filling port can be set on any connecting pipe to realize the filling of the medium on the entire heat pipe, which is convenient for operation.

[0007] Furthermore, the evaporative heat exchanger includes a plurality of evaporating units arranged side by side, a plurality of condensing units are arranged on the condensing unit, each of the evaporating units is provided with the evaporation port and the reflux port, each of the condensing units is provided with an air inlet and a liquid outlet, the evaporation port and the reflux port on each of the evaporating units are connected to the air inlet and the liquid outlet on different condensing units, and all the evaporating units and condensing units are connected in series to form a circulation loop.

[0008] The benefit of adopting the above technical solution is that by connecting multiple separately set evaporation units and condensing units, the heat exchange efficiency is improved. At the same time, all evaporation units and condensing units are connected into a loop, which is convenient for controlling the flow rate inside. At the same time, a filling port can be set at any position to realize the filling of the entire loop.

[0009] Furthermore, a shell is provided outside the evaporation heat exchanger and the condensation heat exchanger.

[0010] The benefit of adopting the above technical solution is that the outer shell is used to install the evaporative heat exchanger and the condensing heat exchanger, which plays a supporting role. At the same time, the relatively arranged evaporative heat exchanger and the condensing heat exchanger can reduce the occupied space, so that the dehumidification function of the evaporative heat exchanger and the heating function of the condensing heat exchanger can cooperate with each other, reduce the humidity of the air outlet, reduce heat loss, and improve heating efficiency.

[0011] Furthermore, the adjustable temperature heat pipe includes a connected power drive circuit and a gravity drive circuit, the power drive circuit includes a power pipe, the power pipe connects the evaporating heat exchanger and the condensing heat exchanger, the transmission member is arranged on the power pipe, and the gravity drive circuit connects the evaporating heat exchanger and the condensing heat exchanger through a connecting pipe.

[0012] The benefit of adopting the above technical solution is that the power drive circuit is connected by a power pipe and driven by a transmission member. The gravity drive circuit evaporates and condenses the medium, and the condensed medium returns to the evaporative heat exchanger under the action of gravity. This setting can control the flow rate of the internal medium and achieve the purpose of controlling the temperature.

[0013] Furthermore, the power tube is a liquid power tube, the internal medium is liquid, connecting the reflux port of the evaporation heat exchanger and the liquid outlet of the condensation heat exchanger, the evaporation port is connected to the air inlet through a pipeline, and a pump is provided on the liquid power tube.

[0014] The benefit of adopting the above technical solution is that the liquid medium in the condensing heat exchanger can be transferred to the evaporating heat exchanger through the driving pipe, so that the liquid can be transferred more quickly. At the same time, the pump set up can realize the driving function, which can change the transmission speed of the liquid medium and further control the outlet air temperature.

[0015] Furthermore, the power tube is a gas power tube, the internal medium is gas, connecting the evaporation port of the evaporation heat exchanger and the air inlet of the condensation heat exchanger, the reflux port is connected to the liquid outlet through a pipeline, and a gaseous power component is provided on the liquid power tube.

[0016] The benefit of adopting the above technical solution is that the gas medium coming out of the evaporating heat exchanger can be quickly introduced into the condensing heat exchanger through the gas power pipe, which can transfer the gas medium more quickly. At the same time, the gas transmission component can change the transmission speed of the gas medium and further control the outlet air temperature.

[0017] Furthermore, it also includes a control device, a temperature sensor and an alarm device.

[0018] Furthermore, a control method for a temperature-adjustable heat pipe is disclosed, comprising the temperature-adjustable heat pipe described in the above technical solution, comprising the following steps:

[0019] In the first step, the temperature sensor on the outlet side of the condensing heat exchanger detects the outlet air temperature and transmits the value to the control device;

[0020] In the second step, the control device compares the set temperature with the outlet air temperature, and the regulating device controls the flow rate of the medium in the pipeline to make the outlet air temperature reach the set temperature;

[0021] If a power drive circuit is configured, the control device can adjust the flow speed of the medium by controlling the transport speed of the transmission member;

[0022] When the control device detects a system operation signal failure, the alarm device sounds an alarm.

[0023] Furthermore, in the second step,

[0024] If the outlet air temperature is higher than the set temperature, the medium flow in the pipeline is reduced and the flow velocity in the pipeline is reduced;

[0025] If the air outlet temperature is lower than the set temperature, the medium flow in the pipeline will be increased and the flow velocity in the pipeline will be increased.

[0026] The benefit of adopting the above technical solution is that, through the above control steps, the air outlet temperature of the heat pipe can be accurately controlled and actively adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0028] Figure 1 This is a schematic diagram of the temperature-adjustable heat pipe connection structure of the present invention.

[0029] Figure 2This is a schematic diagram of the overall structure of the adjustable temperature heat pipe of the present invention.

[0030] Figure 3 This is a connection structure diagram of the second embodiment of the present invention

[0031] Figure 4 FIG. 1 is a diagram of a connection structure of a third embodiment of the present invention

[0032] Figure 5 FIG. 2 is a connection structure of the third embodiment of the present invention

[0033] Figure 6 This is a structural diagram of the power drive circuit connection method of the present invention

[0034] Figure 7 This is the second structural diagram of the power drive circuit connection method of the present invention

[0035] Figure 8 This is a schematic diagram of the connection structure of the control device of the present invention.

[0036] The reference numerals in the accompanying drawings are as follows:

[0037] Evaporation heat exchanger 1; evaporation port 11; reflux port 12; evaporation unit 13; condensation heat exchanger 2; air inlet 21; liquid outlet 22; condensation unit 23; connecting pipe 3; adjustment device 4; transmission member 5; housing 6; power drive circuit 7; power pipe 71; pump 72; gaseous power component 73; gravity drive circuit 8; control device 9; temperature sensor 91; alarm device 92. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0039] like Figure 1 As shown, the present invention discloses a temperature-adjustable heat pipe, comprising: an evaporating heat exchanger 1 and a condensing heat exchanger 2, wherein the evaporating heat exchanger 1 is provided with an evaporation port 11 and a reflux port 12, and the condensing heat exchanger 2 is provided with an air inlet 21 and a liquid outlet 22, wherein the evaporating port 11 and the air inlet 21, and the reflux port 12 and the liquid outlet 22 are connected via a connecting pipe 3, so that the evaporating heat exchanger 1 and the condensing heat exchanger 2 are connected into a loop, and the connecting pipe 3 is provided with an adjusting device 4, a filling port and / or a transmission member 5.

[0040] The beneficial effect of adopting the above technical solution is that by connecting the evaporating heat exchanger 1 and the condensing heat exchanger 2 into a loop, the air outlet temperature can be adjusted by setting the adjustment device 4 or the transmission member 5 on the connecting pipe 3. At the same time, a filling port can be set on any connecting pipe to realize the filling of the medium on the entire heat pipe, which is convenient for operation.

[0041] Implementation Plan 1

[0042] like Figure 1 As shown, the evaporative heat exchanger 1 includes a plurality of evaporating units 13 arranged side by side, a plurality of condensing units 23 are arranged on the condensing unit 23, each of the evaporating units 13 is provided with the evaporating port 11 and the reflux port 12, each of the condensing units 23 is provided with an air inlet 21 and a liquid outlet 22, the evaporating port 11 and the reflux port 12 on each of the evaporating units 13 are connected to the air inlet 21 and the liquid outlet 22 on different condensing units 23, and all the evaporating units 13 and the condensing units 23 are connected in series to form a circulation loop.

[0043] The evaporation unit 13 is provided with evaporation ports a1, a3, a5 and a7, the reflux port 12 includes a2, a4, a6 and a8, a1 and a2 are the two ends of the pipeline, a3 and a4 are the two ends of the pipeline, and so on; the condensation unit 23 includes air inlets 21b1, b3, b5 and b7, the liquid outlet 22 includes b2, b4, b6 and b8, a7 is connected to b1, b2 is connected to a2, a1 is connected to b3, b4 is connected to a4, and so on, forming a heat pipe loop, and the regulating device 4 is set on any connecting pipeline, and the regulating device 4 can be a stop valve, a solenoid valve, etc. The number and connection method of the evaporation unit 13 and the condensation unit 23 are not limited to the number and connection method set above, and any connection method that makes them connected as a whole into a loop is possible.

[0044] Implementation Plan 2 Figure 2 As shown), the connection method is similar to the first embodiment. By changing the positions of the evaporation unit 13 and the condensation unit 23, the medium in the evaporation unit evaporates from liquid to gas, and the medium in the condensation unit condenses from gas to liquid. As shown in the figure: the liquid medium enters the a8 junction of the evaporation unit from b8, and after evaporation, enters the b1 junction of the condensation unit through the c8-c1-a1 junction. After condensation, the liquid medium enters the a3 junction of the evaporation unit through d1-d3-b3. After evaporation again, the medium enters the b2 junction of the evaporation unit through c3-c2-a2. After condensation again, it enters the a5 junction of the evaporation unit through d2-d5-b5. This goes back and forth to form a heat pipe loop. Multiple connecting pipes can be arranged in parallel. The connection position of the interconnected evaporation units 13 is on the lower side of the connection position of the condensation unit 23. Gravity reflux, convenient pipeline connection, less crossing, and convenient maintenance.

[0045] The benefit of adopting the above technical solution is that, by connecting multiple separately set evaporation units 13 and condensation units 23, the heat exchange efficiency is improved, and all evaporation units 13 and condensation units 23 are connected into a loop, which is convenient for controlling the flow rate inside, and the filling port can be set at any position to realize the filling of the entire loop.

[0046] Furthermore, a shell 6 is provided outside the evaporation heat exchanger 1 and the condensation heat exchanger 2 .

[0047] The benefit of adopting the above technical solution is that the shell 6 is used to install the evaporating heat exchanger 1 and the condensing heat exchanger 2, and plays a supporting role. At the same time, the relatively arranged evaporating heat exchanger 1 and the condensing heat exchanger 2 can reduce the occupied space, so that the dehumidification function of the evaporating heat exchanger 1 and the heating function of the condensing heat exchanger 2 can cooperate with each other, reduce the humidity of the air outlet, reduce heat loss, and improve the heating efficiency.

[0048] Implementation Plan 3 Figure 4-5 As shown), multiple groups of evaporation heat exchangers 1 and multiple groups of condensation heat exchangers 2 are set, which are connected by staggered connecting pipes 3. All evaporation heat exchangers 1 and multiple groups of condensation heat exchangers 2 are connected into a loop. The liquid medium flows back into the evaporation heat exchanger by gravity and can be driven by a power component. This connection method is also applicable to microchannel heat exchangers, copper tube aluminum fin heat exchangers, etc.

[0049] Implementation Plan 4 Figure 6-7 ), the adjustable temperature heat pipe includes a connected power drive circuit 7 and a gravity drive circuit 8, the power drive circuit 7 includes a power pipe 71, the power pipe 71 connects the evaporating heat exchanger 1 and the condensing heat exchanger 2, the transmission member 5 is arranged on the power pipe 71, and the gravity drive circuit 8 connects the evaporating heat exchanger 1 and the condensing heat exchanger 2 through a connecting pipe 3.

[0050] The benefit of adopting the above technical solution is that the power drive circuit 7 is connected by a power pipe 71, driven by the transmission member 5, and the gravity drive circuit 8 is through the evaporation and condensation of the medium. The condensed medium returns to the evaporative heat exchanger 1 under the action of gravity. This setting can control the flow rate of the internal medium and achieve the purpose of controlling the temperature. At the same time, an adjustment device can be set on the gravity drive circuit 8 to also achieve the purpose of controlling the temperature.

[0051] In some embodiments, the power tube 71 may adopt the following structural scheme (eg Figure 6 As shown), the power pipe 71 is a liquid power pipe, which is connected to a plurality of branch pipes, each of which is connected to the reflux port 12 of the evaporative heat exchanger 1, and the internal medium is liquid, which connects the reflux port 12 of the evaporative heat exchanger 1 and the liquid outlet 22 of the condensing heat exchanger 2, and the evaporation port 11 is connected to the air inlet 21 through a pipeline, and a pump 72 is provided on the liquid power pipe.

[0052] The benefit of adopting the above technical solution is that the liquid medium in the condensing heat exchanger 2 is transferred to the evaporating heat exchanger 1 through the power pipe 71, which can transfer the liquid more quickly. At the same time, the pump 72 is arranged to realize the driving function, which can change the transmission speed of the liquid medium and further control the outlet air temperature.

[0053] In some embodiments, the power tube 71 may also adopt the following structural scheme (eg Figure 7 As shown), the power tube 71 is a gas power tube, the internal medium is gas, connecting the evaporation port 11 of the evaporation heat exchanger 1 and the air inlet 21 of the condensation heat exchanger 2, the reflux port 12 is connected to the liquid outlet 22 through a pipeline, and a gas power component 73 is provided on the liquid power tube.

[0054] The benefit of adopting the above technical solution is that the gas medium coming out of the evaporating heat exchanger 1 can be quickly introduced into the condensing heat exchanger 2 through the gas power pipe, which can transfer the gas medium more quickly. At the same time, the gas transmission component can change the transmission speed of the gas medium and further control the outlet air temperature.

[0055] In some embodiments, it also includes a control device 9, a temperature sensor 91 and an alarm device 92. The temperature sensor 91 is arranged on the air outlet side of the condensing heat exchanger 2. The alarm device 92 is connected to the temperature sensor 91 and the control device 9. The control device 9 controls the working status of the adjusting device 4 and the transmission member 5.

[0056] A control method for a temperature-adjustable heat pipe is also disclosed, comprising the temperature-adjustable heat pipe described in the above technical solution, comprising the following steps:

[0057] In the first step, the temperature sensor 91 on the side of the condensing heat exchanger 2 detects the outlet air temperature and transmits the value to the control device 9;

[0058] In the second step, the control device 9 compares the set temperature with the outlet air temperature, and the regulating device 4 controls the flow rate of the medium in the pipeline so that the outlet air temperature reaches the set temperature;

[0059] If a power drive circuit is provided, the control device 9 can adjust the flow speed of the medium by controlling the transport speed of the transmission member 5;

[0060] When the control device detects a system failure, the alarm device 92 sounds an alarm to prompt personnel to perform maintenance.

[0061] Furthermore, in the second step,

[0062] If the outlet air temperature is higher than the set temperature, the medium flow in the pipeline is reduced and the flow velocity in the pipeline is reduced;

[0063] If the air outlet temperature is lower than the set temperature, the medium flow in the pipeline will be increased and the flow velocity in the pipeline will be increased.

[0064] If the heat pipe includes a gravity-driven loop 8 , the temperature can be controlled by adjusting the transmission speed of the pump 72 and the gas power component 73 .

[0065] The benefit of adopting the above technical solution is that, through the above control steps, the air outlet temperature of the heat pipe can be accurately controlled and actively adjusted.

[0066] For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, all of which fall within the protection scope of the present invention.

Claims

1. A temperature-adjustable heat pipe, It is characterized in that include: An evaporating heat exchanger (1) and a condensing heat exchanger (2), wherein the evaporating heat exchanger (1) is provided with an evaporating port (11) and a reflux port (12), and the condensing heat exchanger (2) is provided with an air inlet (21) and a liquid outlet (22), wherein the evaporating port (11) and the air inlet (21), and the reflux port (12) and the liquid outlet (22) are connected via a connecting pipe (3), so that the evaporating heat exchanger (1) and the condensing heat exchanger (2) are connected to form a loop, and the connecting pipe (3) is provided with a regulating device (4), a filling port and / or a transmission member (5).

2. The temperature-adjustable heat pipe according to claim 1, It is characterized in that The evaporation heat exchanger (1) comprises a plurality of evaporation units (13) arranged side by side, and the condensation heat exchanger (2) is provided with a plurality of condensation units (23), each of the evaporation units (13) is provided with the evaporation port (11) and the reflux port (12), each of the condensation units (23) is provided with an air inlet (21) and a liquid outlet (22), the evaporation port (11) and the reflux port (12) on each of the evaporation units (13) are connected to the air inlet (21) and the liquid outlet (22) on different condensation units (23), and all of the evaporation units (13) and condensation units (23) are connected in series to form a circulation loop.

3. The temperature-adjustable heat pipe according to claim 1, It is characterized in that A casing (6) is provided outside the evaporating heat exchanger (1) and the condensing heat exchanger (2).

4. The temperature-adjustable heat pipe according to claim 1, It is characterized in that The adjustable temperature heat pipe comprises a power drive circuit (7) and a gravity drive circuit (8) which are connected to each other. The power drive circuit (7) comprises a power pipe (71). The power pipe (71) connects an evaporating heat exchanger (1) and a condensing heat exchanger (2). The transmission member (5) is arranged on the power pipe (71). The gravity drive circuit (8) connects the evaporating heat exchanger (1) and the condensing heat exchanger (2) via a connecting pipe (3).

5. The temperature-adjustable heat pipe according to claim 4, It is characterized in that The power tube (71) is a liquid power tube, the internal medium of which is liquid, and is connected to the reflux port (12) of the evaporation heat exchanger (1) and the liquid outlet (22) of the condensation heat exchanger (2); the evaporation port (11) is connected to the air inlet (21) via a pipeline; and a pump (72) is provided on the liquid power tube.

6. The temperature-adjustable heat pipe according to claim 4, It is characterized in that The power tube (71) is a gas power tube, the internal medium of which is gas, and is connected to the evaporation port (11) of the evaporation heat exchanger (1) and the air inlet (21) of the condensation heat exchanger (2); the reflux port (12) is connected to the liquid outlet (22) via a pipeline; and a gas power component (73) is provided on the liquid power tube.

7. The temperature-adjustable heat pipe according to claim 1, It is characterized in that It also includes a control device (9), a temperature sensor (91) and an alarm device (92).

8. A control method for a temperature-adjustable heat pipe, It is characterized in that The method comprises the temperature-adjustable heat pipe according to claims 1 to 7, comprising the following steps: In the first step, a temperature sensor (91) on the air outlet side of the condensing heat exchanger (2) detects the air outlet temperature and transmits the value to the control device (9); In the second step, the control device (9) compares the set temperature with the outlet air temperature, and the regulating device (4) controls the flow rate of the medium in the pipeline so that the outlet air temperature reaches the set temperature; If a power drive circuit is provided, the control device (9) can adjust the flow speed of the medium by controlling the transport speed of the transmission member (5); When the control device detects a system operation signal failure, the alarm device sounds an alarm.

9. The control method of the temperature-adjustable heat pipe according to claim 8, It is characterized in that In the second step, If the outlet air temperature is higher than the set temperature, the medium flow in the pipeline is reduced and the flow velocity in the pipeline is reduced; If the air outlet temperature is lower than the set temperature, the medium flow in the pipeline will be increased and the flow velocity in the pipeline will be increased.

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