CN110822965A - A method for controlling the water level of a loop heat pipe by a mobile phone APP - Google Patents

Abstract

The present invention provides a method for controlling the water level of a loop heat pipe by a mobile phone APP, comprising the following steps: 1) measuring the water level in a water storage condensing room; 2) the controller collects the water level data and transmits it to the cloud server; 3) the cloud server transmits the water level data 4) The client inputs the operating parameters according to the water level data in the APP client; 5) The APP client transmits the operating parameters to the cloud server; 6) The cloud server transmits the operating parameters to the controller. The invention monitors the water level of the heat exchange system through the mobile phone APP, realizes the intelligent control of the remote monitoring of the heat exchange system, and avoids damage caused by the high water level.

Description

A method for controlling the water level of a loop heat pipe by a mobile phone APP

The present invention is a divisional application with an application date of February 6, 2018, an application number of 2018101159278, and the title of the invention "A loop heat pipe heat exchange device with intelligent water level control by mobile phone APP".

technical field

The present invention relates to a heat exchange system utilizing reverse loop heat pipes.

Background technique

In the prior art, the heat pipe generally relies on gravity to realize the circulation of the heat pipe, but this kind of heat pipe is only suitable for the case where the lower part absorbs heat and the upper part releases heat, but is not applicable to the opposite. Therefore, in view of this situation, the present invention has been improved, and an anti-gravity heat pipe has been invented.

The data shows that the content of vaporous water on the earth is 11.6 times that of liquid freshwater on the surface, but the utilization rate of gaseous freshwater is not high. The current air water extraction method is mainly to convert the water resources in the form of water vapor or tiny water droplets in the humid air into liquid water, mainly including refrigeration condensation method, adsorption method, mechanical compression method, semiconductor refrigeration method, etc. Ye Jitao et al. proposed to design a relatively mature solar semiconductor refrigeration water intake device with regenerator, see CN2567274Y, CN10485506A, and carried out numerical simulation and experimental tests on them, but this scheme has two shortcomings: on the one hand, solar battery The conversion efficiency of the water is low and the loss is large. On the other hand, it is subject to more geographical restrictions and natural conditions, and the structure of the water intake device is complex.

The applicant has already applied for the reverse gravity heat pipe in the previous application, but it is found in the research that it is easy to store too much or too little water, and it is impossible to realize intelligent heat exchange. In view of the above problems, the present invention improves on the basis of the previous invention, provides a new loop heat pipe heat exchange system, and improves the intelligent function of the system.

SUMMARY OF THE INVENTION

The invention provides a new loop heat pipe heat exchange device, which has a compact structure, good heat exchange effect, can effectively increase the air heat exchange area, and significantly improves the cooling efficiency.

In order to achieve the above object, technical scheme of the present invention is as follows:

A reverse loop heat pipe heat exchange system for intelligently controlling air flow according to water level, comprising a fan, an air inlet channel, an air outlet channel, a loop heat pipe and a water storage condensation chamber, characterized in that the water storage condensation chamber is arranged in the In the soil cooling source, the loop heat pipe is an anti-gravity heat pipe, the outlet of the air inlet channel and the inlet of the air outlet channel are communicated with the water storage condensation chamber, and the fan device introduces air from the air inlet channel to the water storage condensation chamber. During the process, heat is exchanged with the evaporating end, and the condensing end conducts heat to the external soil cold source; the heat exchange system also includes a motor, a water level sensor and a central controller. The water level in the water condensation chamber, the air is introduced from the air inlet channel, the motor is connected to the fan to drive the fan to rotate, the motor and the water level sensor are connected to the central controller, and the central controller automatically controls the detected water level data. The frequency of the motor, so as to control the air flow into the heat exchange system; the central controller is connected to the cloud server, and the cloud server is connected to the client, wherein the controller transmits the water level data and motor frequency data measured by the water level sensor to the cloud server, and then It is transmitted to the client through the cloud server. The client is a mobile phone. The mobile phone is installed with an APP program. The user can select the working mode of automatic control or manual control on the client. The controller controls the motor according to the working mode selected by the control customer. frequency.

Preferably, in the manual control mode, the user obtains the water level data and motor frequency data according to the client, manually enters the motor frequency on the client, and then transmits it to the central controller through the cloud server, and the central controller controls the motor frequency according to the client. Enter the frequency to work.

Preferably, in the automatic control working mode, the controller automatically controls the frequency of the motor according to the detected water level data, so as to control the air flow entering the heat exchange system, and transmit the water level data and frequency data to the client.

Preferably, if the detected water level data is lower than the first value, the controller automatically turns on the motor to rotate, and if the measured pressure data is higher than the second value, the controller stops the rotation of the motor, and the second value is greater than the first value .

Preferably, when the measured water level is lower than the first water level, the motor drives the fan to rotate with the first power; when the measured water level is higher than the second water level higher than the first water level, the motor rotates with the second power lower than the first water level. The power rotates; when the measured water level is higher than the third water level higher than the second water level, the motor rotates with the third power lower than the second power; when the measured water level is higher than the fourth water level higher than the third water level When , the motor rotates with a fourth power lower than the third power; when the measured water level is higher than the fifth water level higher than the fourth water level, the motor rotates with a fifth power lower than the fourth power.

Preferably, the first water level is 0.88-0.93 times the second water level, the second water level is 0.88-0.93 times the third water level, the third water level is 0.88-0.93 times the fourth water level, and the fourth water level is the fifth water level 0.88-0.93 times.

Preferably, the fifth power is 0.8-0.9 times the fourth power, the fourth power is 0.8-0.9 times the third power, the third power is 0.8-0.9 times the second power, and the second power is the first power 0.8-0.9 times.

Preferably, the condensing end pipeline in the direction of the evaporation end is arranged between and in contact with two adjacent vertical fins, and longitudinal vertical fins are arranged around the outer wall of the evaporation end; The outlet channel is arranged between and in contact with the two adjacent vertical fins; the descending pipe of the heat pipe is arranged between the adjacent two vertical fins and is in contact with the adjacent two vertical fins. two vertical fins are in contact; at least a part of the ascending section and the descending section are arranged in the air inlet channel; the pipelines are multiple, the air outlet channels are multiple, and the pipelines are connected with the air outlet channel are equal in number.

Preferably, the vertical fins extend through the center of the air inlet channel, and the riser pipeline and the inlet pipe of the condensation chamber have the same center.

Preferably, there are multiple pipelines, and the distances between the centers of the multiple pipelines and the ascending section are the same.

Preferably, a pipeline is arranged between every two adjacent vertical fins, and the pipelines are in a parallel structure.

Preferably, there are multiple air outlet channels, and the distances between the centers of the multiple air outlet channels and the pipeline at the evaporation end are the same.

Preferably, an air outlet channel is provided between every two adjacent vertical fins, and the air outlet channels are in a parallel structure.

Preferably, the number of the pipelines is multiple, the number of the air outlet channels is multiple, and the number of the pipelines and the air outlet channels is equal.

Preferably, the distance between the center of the pipeline and the center of the adjacent air outlet channel is the same; the distance between the center of the air outlet channel and the center of the adjacent air pipeline is the same.

Preferably, the radius of the air outlet channel is R, the radius of the pipeline is r, and the angle between adjacent fins is A, which meets the following requirements:

Sin(A)=a*LN(r/R)+b, where LN is a logarithmic function, a, b are parameters,

Among them, 0.330<a<0.340, 0.73<b<0.74;

15°<A<25°;

0.24<r/R<0.5.

Preferably, 0.26<r/R<0.38.

A loop heat pipe air water intake device, comprising a fan device, an air inlet channel, an air outlet channel, a loop heat pipe and a water storage condensation chamber, characterized in that the water storage condensation chamber is arranged in a soil cold source, and the ring The road heat pipe is an anti-gravity heat pipe. The evaporation end of the loop heat pipe is installed at the inlet of the water storage condensation chamber. The outlet of the air inlet channel and the inlet of the air outlet channel are communicated with the water storage condensation chamber. The fan device blows the air from the air inlet channel. In the process of introducing into the water storage condensation chamber, it exchanges heat with the evaporating end, and the condensing end conducts the heat to the external soil cold source.

Preferably, the fan device includes a vertical wind turbine, a planetary gear speed increaser and a helical blade, and the vertical axis wind turbine utilizes wind energy to drive the planetary gear speed increaser and the helical blade to inhale air.

Preferably, the lower end of the helical blade is connected to the inlet pipe of the water storage condensation chamber, and the diameter of the position where the water storage condensation chamber is connected to the inlet pipe begins to increase, and then the diameter begins to decrease.

Preferably, the evaporating end of the loop heat pipe is installed on the inlet pipe of the water storage condensation chamber, and the condensing end of the loop heat pipe is wound outside the condensation chamber and is in direct contact with the external soil.

Preferably, the air inlet channel is the inlet pipe of the condensation chamber, the air outlet channel is arranged at the inlet pipe of the condensation chamber, and the cold air at the air outlet pre-cools the hot air at the air inlet.

Preferably, at least a part of the evaporation end is arranged at the inlet pipe of the condensation chamber, at least a part of the evaporation end is filled with a capillary wick, the center of the capillary core is provided with a pipeline from the condensation end to the evaporation end, and the outer wall of the rising section of the evaporation end is surrounded by longitudinal vertical fins .

Compared with the prior art, the present invention has the following advantages:

1) The present invention realizes the automatic control of the water level of the heat exchange system through the mobile phone APP client through the controller, saves energy, achieves the best efficiency, improves the intelligence of the heat exchange system, and realizes remote control, and the present invention It can keep the water level of the water storage condensing chamber constant, and automatically adjust the frequency of the fan according to the height of the water temperature, so as to avoid the pressure being too high or too low, which will reduce the heat exchange efficiency.

2) Through the vertical fins, on the one hand, the heat exchange effect is increased, and on the other hand, the pipes and heat pipes are fixed.

3) Use the temperature difference between the above-ground air and the underground soil to force the humid air to reach the dew point, get rid of the dependence on electricity, and truly achieve zero emissions and zero pollution.

4) As a high-efficiency heat transfer tool, the loop heat pipe has a simple principle and a compact structure, which can effectively increase the air heat exchange area and significantly improve the cooling efficiency.

5) The loop heat pipe condenser is wound outside the condensing chamber and is fully in contact with the external soil, increasing the heat dissipation of the air at the evaporating end of the heat pipe and improving the cooling efficiency.

6) No secondary energy consumption, wind power is used as daily power, and the system adopts vertical axis wind turbine for wind power generation, which avoids the influence of wind direction on wind turbine, and can collect wind from all directions, and solar motor under no wind conditions The intake impeller can be driven to rotate, so that the device can be continuously operated. In a certain sense, the scenery complements each other.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic diagram of the vertical axis wind turbine of the present invention.

FIG. 3 is a sectional view of the planetary speed increaser of the present invention.

FIG. 4 is a top view of the impeller of the present invention.

Figure 5 is a view of the subterranean section of the present invention.

6 is a cross-sectional view of the condensation chamber of the present invention.

FIG. 7 is a cross-sectional view along A-A of FIG. 6 .

FIG. 8 is a schematic structural diagram of the heat pipe of the present invention.

FIG. 9 is a schematic structural diagram of multiple evaporation-end-to-condensing-end pipelines (falling sections) of the present invention.

FIG. 10 is a schematic diagram of the pipeline connection structure for setting the capillary core position according to the present invention.

FIG. 11 is a schematic diagram of the pipeline connection structure for flow control of the present invention.

FIG. 12 is a control flowchart of FIG. 11 .

Reference numerals are as follows: 1 fan, 2 planetary gear transmission, 3 helical blades, 4 air outlet channel, 5 air inlet channel, 6 loop heat pipe evaporation end, 7 condensation chamber, 8 loop heat pipe condensation end, 9 evaporation end flow to condensation End pipeline (falling section), 10 condensing end flowing to evaporation end pipeline, 11 inlet pipe of condensation chamber, 12 fins, 13 capillary core, 14 motor, 15 central controller.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In this article, if there are no special instructions, when it comes to formulas, "/" means division, and "×" and "*" mean multiplication.

An anti-gravity loop heat pipe, as shown in Figure 8, the heat pipe includes an evaporation end 6 and a condensation end 8, the evaporation end 6 is located at the upper part of the condensation end 8, and a part of the evaporation end 6 is arranged in the fluid rising section, at the At least a part of the evaporation end of the fluid rising section is provided with a capillary wick 13 , as shown in FIG. 10 .

Preferably, the evaporation end includes two parts, a pipeline (a descending section) 9 from the evaporation end flowing to the condensation end, and an ascending section. Preferably, a pipeline 10 from the condensation end to the evaporation end is arranged in the ascending section.

As shown in FIG. 1, a loop heat pipe air heat exchange system includes a fan device 1, an air inlet channel 5, an air outlet channel 4, a loop heat pipe and a water storage condensation chamber 7, and the water storage condensation chamber 7 is arranged in the In the soil cooling source, the loop heat pipe is an anti-gravity heat pipe, the outlet of the air inlet channel 5 and the inlet of the air outlet channel 4 are communicated with the water storage condensation chamber, and the fan device 1 introduces the air from the air inlet channel 5 to the storage chamber. The water condensation chamber 7 exchanges heat with the evaporation end 6 in the process, and the condensation end 8 conducts the heat to the external soil cold source.

The invention provides an air water intake device of a loop heat pipe with a new structure. By setting the loop heat pipe as a high-efficiency heat transfer tool, the principle is simple, the structure is compact, and the cooling efficiency is significantly improved. Moreover, the present invention utilizes the temperature difference between the air above ground and the soil below the ground to force the moist air to reach the dew point, get rid of the dependence on electricity, and can truly achieve zero emission and zero pollution.

Preferably, at least a part of the evaporation end 6 of the loop heat pipe is installed at the inlet of the water storage condensation chamber 7 .

Preferably, an inlet pipe of the condensation chamber 7 is arranged between the condensation chamber 7 and the fan device 1, at least a part of the air inlet passage 5 is arranged in the inlet pipe of the condensation chamber 7, and at least a part of the inlet pipe of the condensation chamber 7 is arranged in the external soil in the cold source. With this arrangement, the air in the air inlet channel 5 can directly participate in the heat exchange of the external soil cold source, so that the air is further cooled under the combined action of the soil and the loop heat pipe, and the cooling effect is improved.

Further preferably, the fan device 1 includes a vertical wind turbine, a planetary speed increaser 2 and a helical blade 3, and the vertical axis wind turbine utilizes wind energy to drive the planetary wheel speed increaser 2 and the spiral blade 3 to inhale air.

Preferably, the vertical wind turbine 1 is located at the top, and the lower part is followed by a planetary gear speed increaser 2 and a helical blade 3 .

Further preferably, the inlet pipe of the condensation chamber 7 is the air inlet channel.

Preferably, as shown in FIG. 1 , the water storage condensing chamber 7 is downward from the position where the inlet pipe is connected, and the diameter gradually becomes larger at the beginning, and then gradually becomes smaller after reaching a certain position. It is beneficial for the air to flow in the condensation chamber, complete the gas circulation, and increase the heat exchange efficiency between the gas and the wall of the condensation chamber.

Preferably, the evaporating end 6 of the loop heat pipe is installed on the inlet pipe of the water storage condensation chamber, and the condensing end 8 of the loop heat pipe is wound around the outside of the condensation chamber and is in direct contact with the external soil. The loop heat pipe condenser is wrapped around the outside of the condensation chamber and is in full contact with the external soil, which increases the heat dissipation of the air at the evaporating end of the heat pipe and improves the cooling efficiency.

Preferably, at least a part of the evaporation end 6 is provided with a capillary wick 13, and its capillary force provides the power for the backflow cycle of the working medium, and at the same time makes the backflowed working mass meet the requirement of heat transfer, thereby realizing the function of an anti-gravity heat pipe.

By arranging the capillary wick 13, and the capillary wick 13 is arranged at the evaporation end, flow resistance is naturally generated in the ascending section 6 of the evaporation end, so that the steam generated at the evaporation end naturally flows to the pipeline 9 with small resistance, thereby forming an antigravity heat pipe .

Preferably, the capillary wick 13 is only arranged in the rising section of the evaporation end, preferably arranged in a part of the rising section. For example, as shown in Figure 6 and Figure 10.

Preferably, at least a part of the air outlet channel 4 is arranged in the inlet pipe of the condensation chamber, and the cold air at the air outlet pre-cools the hot air at the air inlet. Through the heat exchange between the outlet gas and the inlet gas, the heat exchange effect is further realized and the condensation efficiency of water is increased.

Preferably, as shown in FIG. 7 , the evaporation end is set at the inlet pipe of the condensation chamber, and the rising section of the evaporation end is filled with the capillary wick 13 to provide sufficient capillary force, and the pipeline 10 from the condensation end to the evaporation end is arranged in the center of the capillary wick 13 , By setting the pipeline 10 in this way (without a capillary core), the fluid resistance of the pipeline can be reduced, the working medium can be returned more smoothly, and the heat transfer capacity in the anti-gravity state can be improved. The outer wall of the rising section of the evaporation end is surrounded by vertical vertical The straight fins 12 increase the heat exchange area and improve the heat exchange efficiency with the air.

The pipeline 10 is a gas or liquid pipeline, which realizes a flexible arrangement, that is, the diameter of the pipeline is small and it is easy to bend. The principle of the loop heat pipe is that if the evaporator side and the pipeline 10 are steam pipelines, the principle is that the working medium inside the evaporator is heated and evaporated, and the steam enters the pipeline 10 along the upper outlet of the evaporator, and then flows to the surrounding pipeline at the lower part. The soil contact starts to condense, and when the steam is completely condensed, it is returned to the evaporator by the capillary force of the evaporator capillary wick, thereby realizing the circulation of the working fluid.

Preferably, the pipeline 10 communicates with the capillary wick 13 . Through the communication, the fluid flow between the capillary wick 13 and the pipeline 10 can be realized, so that when the liquid rises through the capillary wick, if a large pressure is generated due to heat absorption, for example, even bubbles may appear, the liquid can pass through the pipeline. 10 to equalize the pressure in the evaporation section, so as to ensure the equalization of the pressure.

Further preferably, the capillary wick 13 extends to the condensation end so as to directly suck up the liquid at the condensation end. Further improve the circulation capacity of the anti-gravity heat pipe.

Preferably, the capillary cores are distributed along the height direction, as shown in FIG. 6 . Further preferably, along the height decreasing direction, the capillary force of the capillary core gradually increases. The closer to the condensation end, the greater the capillary force. Through experiments, it is found that by adopting this method, the suction force for the liquid can be further improved, and the suction force can be increased by more than 20% under the same cost, thereby improving the heat exchange effect.

Through further analysis, the preliminary reason may be that as the capillary force near the condensation end increases, the liquid at the condensation end can be quickly absorbed into the capillary wick, and the liquid continuously flows to the evaporation end. In the process of flow, the liquid continuously absorbs heat, the temperature increases due to the heat absorption, and the density decreases. Therefore, due to the density change, the required capillary force becomes significantly smaller. Therefore, in the case of small capillary force, the It sucks up easily. The above reasons are obtained by the inventors through a large number of experiments and studies, and are not common knowledge in the art.

Further preferably, along the height decreasing direction, the capillary force of the capillary core gradually increases with an increasing range. Through experiments, it is found that by adopting this method, the suction force for the liquid can be further improved, and the suction force can be further improved by about 8% under the same cost, thereby improving the heat exchange effect.

Preferably, the pipeline is formed by a through hole opened in the middle of the capillary core.

Preferably, as shown in FIG. 10 , the pipe diameter of the heat pipe position where the capillary wick is provided is larger than the pipe diameter of the heat pipe position where the capillary wick is not provided.

Further preferably, as shown in FIG. 10 , the change of the pipe diameter between the tube at the heat pipe position with the capillary core and the tube at the heat pipe position without the capillary core is a continuous change. Further preferred is a linear change. The pipes in the large diameter position and the small pipes are connected by shrinking parts at the joints. The change of the pipe diameter of the shrinking part is a linear change.

Preferably, the air outlet channel 4 is arranged between and in contact with two adjacent vertical fins 12 . With this arrangement, the independent mechanism for supporting the air outlet channel 4 can be reduced, so that the structure is compact, and the cold air in the outlet channel can exchange heat with the fins through the pipes, maintaining the coldness of the fins and enhancing the heat exchange effect.

Preferably, the condensing end pipeline 9 in the direction of the evaporation end is disposed between and in contact with two adjacent vertical fins. With this arrangement, the independent mechanism for supporting the air outlet channel 4 can be reduced, so that the structure is compact, and the steam in the pipe can transfer a small amount of heat to the fins for a short time through the pipe, thereby reducing the overall thermal resistance of the system and avoiding evaporation when the ground resists gravity. The steam is superheated in the boiler to slow down the temperature oscillation during the start-up of the heat pipe.

Further preferably, the pipeline 9 is closer to the outer wall of the evaporating end pipeline than the air outlet channel 4, so that the above two heat transfer processes can be realized simultaneously and play corresponding roles.

Further preferably, the diameter of the pipeline 9 is smaller than that of the air outlet channel 4 .

Preferably, along the condensation end pipeline 9 can be provided with multiple evaporation end flow directions, as shown in FIGS. 7 and 9 . By arranging multiple pipelines 9, the steam generated by the heat absorption at the evaporating end can enter the condensing end through multiple pipelines 9, which further enhances heat transfer, and because the fluid in the heat pipe absorbs heat and evaporates, the volume increases. The pipeline 9 can further relieve the pressure and improve the heat exchange effect.

Further preferably, the vertical fins extend through the center of the inlet pipe of the condensation chamber, and the pipeline in the ascending section of the evaporation end has the same center as the inlet pipe of the condensation chamber.

Preferably, there are multiple pipelines 9, and the distances between the centers of the multiple pipelines 9 and the pipelines in the ascending section of the evaporation end are the same.

Further preferably, one pipeline 9 is arranged between every two adjacent vertical fins 12 . The pipeline 9 is in a parallel structure.

Preferably, there are multiple air outlet channels 4, and the distances between the centers of the multiple air outlet channels 4 and the pipeline in the ascending section of the evaporation end are the same, so that the temperature distribution between the fins is more uniform, and the above-mentioned heat exchange is achieved. The effect is more obvious. Further preferably, one air outlet channel 4 is provided between every two adjacent vertical fins 12 . The air outlet channels 4 are in a parallel structure.

Further preferably, there are multiple pipelines 9 and multiple air outlet channels 4 , and the number of pipelines 9 and air outlet channels 4 is equal.

Further preferably, the pipelines 9 are arranged between adjacent air outlet channels 4 , and the air outlet channels 4 are between adjacent pipelines 9 . Further preferably, the distance between the center of the pipeline 9 and the center of the adjacent air outlet channel 4 is the same; the distance between the center of the air outlet channel 4 and the center of the adjacent air pipeline 9 is the same. That is, the pipelines 9 are arranged in the middle of the adjacent air outlet channels 4 , and the air outlet channels 4 are arranged in the middle of the adjacent pipelines 9 . That is, as shown in FIG. 8 , the first connecting line between the center of the circle where the pipeline 9 is located and the center of the evaporation end 6 forms the first connecting line, the second line between the center of the adjacent air outlet channel 4 and the center of the evaporation end 6 . Three connecting lines, the first included angle formed between the first connecting line and the second connecting line is equal to the second included angle formed between the first connecting line and the third connecting line. Similarly, the fourth connection line between the center of the circle where the air outlet channel 4 is located and the center of the evaporation end 6, the fifth connection line and the sixth connection line are formed between the center of the adjacent pipeline 9 and the center of the evaporation end 6, The third included angle formed between the fourth connection line and the fifth connection line is equal to the fourth included angle formed between the fourth connection line and the sixth connection line. That is, along the circumferential direction, the pipelines 9 and the outlet channels 4 are evenly distributed.

Through the above arrangement, it can be ensured that the pipeline 9 and the air outlet channel 4 can cool the inlet air uniformly, so as to avoid local uneven income, resulting in poor water intake effect.

In the numerical simulation and experiments, it is found that the difference between the diameters of the air outlet channel 4 and the pipeline 9 should not be too large or too small. The heat exchange between the air and the pipeline 9 is not good, resulting in uneven overall heat exchange. If it is too small, the distance between the air outlet channel 4 and the pipeline 9 is too close, resulting in the air and/or air close to the outer wall of the air inlet channel 5. Or the heat exchange of the air near the outer wall of the evaporation end 6 is not good, resulting in uneven heat exchange of the air in the overall air inlet channel 5; for the same reason, the angle between the adjacent fins 12 should not be too large. As a result, there are few distribution fins, and the heat exchange effect is too poor. At the same time, the number of air outlet channels 4 and pipes 9 distributed is too small, resulting in uneven heat exchange and poor heat exchange effect. Similarly, the adjacent fins 12 The included angle between them should not be too small. If it is too small, the fins will be distributed too densely and the flow resistance will be greatly increased. Moreover, the diameters of the air outlet channel 4 and the pipe 9 are not much different, but the heat exchange capacity of the same area is very different. Therefore, in this case, the heat exchange is not uniform, resulting in a poor heat exchange effect. Therefore, it is necessary to determine the optimal size relationship through a large number of numerical simulations and experiments.

The radius of the air outlet channel 4 is R, the radius of the pipeline 9 is r, and the angle between the adjacent fins is A, which meets the following requirements:

Sin(A)=a*LN(r/R)+b, where LN is a logarithmic function, a, b are parameters,

Among them, 0.330<a<0.340, 0.73<b<0.74;

15°<A<25°;

0.24<r/R<0.5; more preferably, 0.26<r/R<0.38.

The above empirical formula is obtained through a large number of numerical simulations and experiments, and has been verified by experiments, and the error is basically within 3.2.

Preferably, the said 3<R<10mm; the said 1.5<r<4.0mm;

Further preferably, the diameter of the heat pipe at the capillary core position is 30-40mm, more preferably 32mm;

Further preferably, the diameter of the heat pipe without the capillary core position is 5.0-6.4mm;

Further preferably, the diameter of the pipeline from the condensation end to the evaporation end is 5.0-6.4 mm;

Further preferably, the diameter of the air inlet channel 5 is 80-200mm; preferably, 120-150mm;

Further preferably, the vertical length of the fins is 780-1500mm, preferably 1200mm; At this length, the overall heat transfer capacity of the fins is significantly improved, the heat transfer coefficient is also within a suitable range, and the impact on the damage of the boundary layer and the fluid flow effect is relatively small.

The external wind drives the vertical axis wind turbine 1 shown in the figure to rotate, and the wind energy is converted into mechanical energy. The wind turbine drives the coaxial intake helical blades 3 to rotate through the planetary gear transmission 2, and sucks the filtered external moist air into the condensation chamber. The air inlet is designed as a swivel with a reduction port for maintaining pressure. The continuous operation of the impeller increases the gas pressure in the cavity and increases the absolute humidity of the moist air. Under the continuous action of air pressure, the air with high absolute humidity enters the underground condensation chamber through the air inlet channel with relatively narrow diameter. The outside hot air first exchanges heat with the cooler air that is being discharged to the outside in the air inlet channel 5, so that the exhaust gas takes away part of the heat, and the metal outer wall in contact with the soil also has a heat conduction function, and the two work together to complete the heat transfer. Air pre-cooling. After the air begins to enter the condensing chamber, the hotter air slowly passes through the fin channel of the loop heat pipe evaporator, completes heat exchange with the medium in the loop heat pipe, and its own temperature decreases significantly. When the dew point is reached, the water vapor begins to liquefy, and the fins Small droplets form on the surface. The remaining air goes deep into the water storage condensation chamber 7, exchanges heat with the external soil through the metal outer wall of the cavity, and condenses into droplets at the same time. As the liquid water gradually accumulates, the contact area between the hot air and the outer wall gradually decreases. At this time, the main cold source is provided by the loop heat pipe. The evaporation end 6 of the loop heat pipe absorbs the heat of the hot air, evaporates the liquid working medium into a gaseous state, and then conducts the heat to the external soil through the condensing end 8 of the loop heat pipe wound outside the condensation chamber to condense the gaseous working medium into a liquid state. , and the anti-gravity loop heat pipe has the characteristics of being able to return the liquid. Under the continuous wind, the water resources in the external humid air will be continuously collected into the water storage condensing chamber, cooled rapidly, and discharged into liquid water after condensing. The electric energy generated by the vertical axis wind turbine 1 is stored in the battery, and the electric energy is supplied to the electronic water pump to pump out the accumulated fresh water and store it in the ground water tank.

When taking water, the invention uses wind energy, soil cold source and loop heat pipe to condense and condense water vapor in the air to take water, which not only solves the dependence of the traditional solar energy adsorption method on solar energy, but also adapts to more regions and weather conditions. There is no secondary energy consumption, and the problem that the conversion efficiency of the prior art is not high enough is also solved.

Preferably, the planetary speed increaser connects the vertical axis wind turbine and the impeller, and amplifies the rotational speed transmitted by the wind turbine to the impeller, so that the outside air can enter the tank faster, increase the air intake to a certain extent, and at the same time improve the air flow in the pipeline. pressure.

Preferably, the loop heat pipe capillary core is prepared using powder metallurgy methods. Before starting, the capillary wick, supplementary cavity and infusion pipe of the evaporator of the loop heat pipe are filled with working medium, while the steam channel, condenser and steam pipe are in a two-phase state.

The part of the cooling chamber adopts the cooperative heat exchange method with soil cooling as the supplement and anti-gravity loop heat pipe as the main, which can greatly improve the air cooling speed and water production.

Preferably, the condensing end of the loop heat pipe is wound outside the condensing chamber to increase the heat dissipation area.

Preferably, the exhaust pipe is placed in the intake passage, so as to achieve the purpose of air pre-cooling.

As a preferred embodiment, the present invention can be provided with a motor to drive the fan to rotate.

Preferably, the water intake device (heat exchange system) further includes a motor 14, a pressure sensor and a central controller 15. The water level sensor is arranged in the water storage condensation chamber to measure the water level in the water storage condensation chamber. The fan Air is introduced from the air inlet channel, the motor 14 is connected to the fan 1 to drive the fan 1 to rotate, the motor 1 and the water level sensor are connected to the central controller 15 for data connection, and the central controller 15 is connected to the cloud server 16 and the cloud server 16 Connect with the client 17, wherein the controller 15 transmits the water level data and motor frequency data measured by the water level sensor to the cloud server 16, and then transmits it to the client through the cloud server 16, the client is a mobile phone, and the mobile phone installs the APP program , the user can choose the working mode of automatic control or manual control on the client side, and the controller controls the frequency of the motor according to the working mode selected by the control client.

The invention realizes the automatic control of the water level of the heat exchange system through the mobile phone APP client and the controller, saves energy, achieves the best efficiency, improves the intelligence of the heat exchange system, and realizes remote control.

Preferably, in the manual control mode, the user obtains the water level data and motor frequency data according to the client, manually enters the motor frequency on the client, and then transmits it to the central controller through the cloud server, and the central controller controls the motor frequency according to the client. Enter the frequency to work.

Preferably, in the automatic control working mode, the controller automatically controls the frequency of the motor according to the detected water level data, so as to control the air flow entering the heat exchange system, and transmit the water level data and frequency data to the client.

Preferably, in the working mode of automatic control, if the detected water level data is lower than the first value, the controller automatically turns on the motor to rotate, and if the measured pressure data is higher than the second value, the controller stops the rotation of the motor, so The second numerical value is greater than the first numerical value.

Further preferably, when the measured water level is lower than the first water level, the motor drives the fan to rotate with the first power; when the measured water level is higher than the second water level higher than the first water level, the motor rotates with the second water level lower than the first power. The power rotates; when the measured water level is higher than the third water level higher than the second water level, the motor rotates with the third power lower than the second power; when the measured water level is higher than the fourth water level higher than the third water level When , the motor rotates with a fourth power lower than the third power; when the measured water level is higher than the fifth water level higher than the fourth water level, the motor rotates with a fifth power lower than the fourth power.

Further preferably, the first water level is 0.88-0.93 times the second water level, the second water level is 0.88-0.93 times the third water level, the third water level is 0.88-0.93 times the fourth water level, and the fourth water level is the fifth water level. 0.88-0.93 times.

The invention provides a loop heat pipe heat exchange system with intelligent water level control, which can keep the water level of the water storage condensing chamber constant, and automatically adjust the frequency of the fan according to the height of the water temperature, so as to prevent the pressure from being too high or too low, which will reduce the heat exchange efficiency. .

The water intake device includes a water diversion pipeline. When the water level is too high, the water diversion pipeline will lead the water out of the water storage condensing chamber for utilization.

Although the present invention has been disclosed above with preferred embodiments, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be based on the scope defined by the claims.

Claims (3)

1. A method for controlling loop heat pipe water level by a mobile phone APP comprises the following steps:

1) measuring the water level in the water storage condensation chamber;

2) the controller collects water level data and transmits the water level data to the cloud server;

3) the cloud server transmits the water level data to the APP client;

4) the client inputs operation parameters according to the water level data at the APP client;

5) the APP client transmits the operation parameters to the cloud server;

6) the cloud server transmits the operation parameters to the controller;

7) the motor operates according to instructions given by the controller.

2. The method of claim 1, wherein the user can select an automatic or manual mode of operation at the client, and the controller controls the frequency of the motor based on the mode of operation selected by the control client.

3. The heat exchange system comprises an air inlet channel, an air outlet channel and a loop heat pipe, wherein the air outlet channel is arranged in the air inlet channel, the loop heat pipe is an antigravity heat pipe, air is introduced from the air inlet channel to exchange heat with an evaporation end of the loop heat pipe, and a condensation end of the loop heat pipe conducts heat to an external cold source.

Images