JPS62134424A - Heat transfer device - Google Patents

Abstract

PURPOSE:To stabilize the heat transfer function of the title device by stopping the heating on the basis of a liquid level lowering signal of a tank on a heating side and circulating a heat medium of a tank on a heat radiation side by utilizing the lowering of the internal pressure within the tank on the heating side due to the lowering in the temperature of a heating side block. CONSTITUTION:A heat medium within a heat exchanger 12 is evaporated by heating means 11, and vapor discharges heat via a tank 13 on a heating side and is stored within a tank 18 on the side of heat radiation. In this step, when the level of the heat medium within the tank 13 on the heating side is lowered, and liquid level detection means 24 is actuated, the operation of heating means 11 is stopped by time control means 25. Thus, a heating block 14 is cooled and the internal pressure is lowered, resulting in actuating a check value 24 by time control means 25, and circulating the heat medium solution within the tank 18 on the heat radiating side to the tank 13 on the heating side. In so doing, since the tank 18 on the heat radiating side is constantly kept at a predetermined pressure by means of an exhaust valve and an air feed valve 26, the circulation of the liquid is smoothly carried out. By this construction, a stable heat transfer function can be attained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a transfer device for transferring heat from a heating section to a heat radiating section without a pump or other device.

Conventional Technology This type of heat transfer device uses the pressure of steam to transfer heat intermittently downward as well, as shown in FIG. One of the communication passages 3 communicates the lower part of the upper container 1 with a part of the lower container 2, and a check valve 5 is interposed in the middle of the communication passage 3. The communication path 4 communicates a part of the upper container 1 with the vicinity of the upper part of the lower container 2 and has a radiator 6 interposed therebetween to form a sealed structure, and a heating device 7 is connected to the lower container 2 in correspondence with the communication path 4 . A control mechanism 9 is provided in which liquid level detectors 8 are provided at two points, upper and lower, in the lower container 2, and the heating device 7 is controlled by the signals from the liquid level detectors 8.
The heating device 7 heats the heat medium liquid stored in the lower container 2, and its vapor pressure causes the heat medium vapor to pass through the communication path 4, which is interposed in the middle. Heat is radiated and condensed in the radiator 6, and becomes a heat transfer liquid, which is then poured into the upper container 1.
It is stored in As the heating continues, the liquid level of the heating medium T in the lower container 2 decreases, and when it reaches the upper detection position of the gamma rear detector 8, the temperature of the heating device 7 is determined by the control device 9. The story stops. ′-A inside the lower container 2 due to the stop of application and cooling.
When the atmospheric pressure decreases, the heat medium liquid stored in the upper 11111 volume 2g1 is moved to the lower container 2 through the communication path 3 and the check valve 5 interposed in the middle due to gravity and large voltage. The liquid level in the lower container 2 rises, and when it reaches the upper detection position of the liquid level detector 8, the control mechanism 9 starts the operation of the heating device 7. This cycle utilizes the latent heat of the heat transfer liquid. It was supposed to transport heat.

Problems to be Solved by the Invention However, with the above configuration, when a substance such as water, which has a high boiling point and is always liquid, is used as the working medium, it is necessary to first perform de-Xk to bring the inside of the closed system into a reduced pressure state. Even though
As time passes, air enters the system due to slow leaks, lowering the degree of vacuum and reducing heat transfer performance.
The problem was that the internal pressure rose abnormally. In addition, even if the inside of the system is kept in a reduced pressure state, in the case of a closed structure, when the heat transfer liquid returns from the upper container to the lower 1llllI valley a:, the internal pressure will drop significantly due to the reduced pressure expansion of the gas phase volume in the upper container. However, since the pressure difference between lower fftl + valley chamber becomes smaller,
There was a problem in that the return could not be carried out promptly. Furthermore, if an open system is used, there are problems in that the heat transfer fluid loses weight due to evaporation and acid (L) corrosion is accelerated by dissolved oxygen.

The present invention solves this problem by preventing an abnormal pressure rise in the system and a decrease in heat transfer coefficient due to air entering the closed system, and by quickly eliminating the problem.
The purpose is to always maintain stable heat transfer performance.

Means for Solving the Problems In order to solve the above problems, the heat transfer device of the present invention includes:
A heating side block consisting of a heating part and a heating side tank part, a heat radiation part, a heat radiation side tank, a steam pipe connecting the upper part of the heating side block and one end of the heat radiation part, and a pond end of the heat radiation part and one end of the heat radiation side tank. a liquid pipe communicating with the heating side tank, a liquid permeation means for intermittently discharging the heat medium liquid accumulated in the heat dissipation side tank to the heating side block, and a liquid level detection means provided near the lower part of the heating side tank section. , a control means for controlling the input/output to the heating section using this liquid level detection means, and an intake/exhaust system that is installed near the top of the heat dissipation side tank and operates at a pressure higher than a certain value or lower than atmospheric pressure. It is equipped with the means.

Function: With the above-described configuration, the heat medium liquid is heated in the heating section to cause boiling, and steam is generated.

The generated steam passes through the steam pipe connected to the upper part of the heating side block to the heat radiation section, where the heat medium vapor condenses by radiating the heat of condensation, and the liquefied heat medium liquid flows into the liquid pipe. and flows into the heat radiation side tank. As the operation in the heating mode progresses, the level of the heat medium liquid in the heating side tank section decreases, and when it is no longer detected by the liquid level detection means, the operation in the heating mode is stopped by the time-based sub-means, and the liquid level returns to the liquid return mode. becomes. 7X
When the heat side block is cooled and the internal heat medium vapor condenses and the internal pressure decreases, the heat medium liquid stored in the heat radiation side tank begins to be coupled to the heating side block by the liquid permeation means. When the distant phase starts, the liquid level in the heating side tank section rises, and when the liquid level detecting means provided in this tank detects the liquid level, the heating mode operation is started by the time-based sub-means.

Heat transfer is carried out by repeating this cycle.

In the present invention, in order to prevent the loss of heat transfer liquid due to evaporation, a closed structure is adopted, and the inside of the system is initially degassed and depressurized. When air enters the system due to slow leakage over time, this air is swept away by the heat medium vapor and stays in the space after the heat radiation part, causing a decrease in heat transfer coefficient and an increase in internal pressure. However, the heat dissipation side tank is equipped with an exhaust means that activates when the tank internal pressure becomes higher than atmospheric pressure by a certain value, so when the internal pressure exceeds this set value, the intruding air is discharged out of the system and the air is discharged for a long period of time. Heat can be transported while maintaining the original performance.

In addition, the discharging of the heat transfer liquid is carried out by the pressure difference between the heating block and the heat dissipation side tank, but since it has a sealed structure, when the dispersion starts, the volume of the gas phase inside the heat dissipation side tank expands under reduced pressure. The internal pressure drops and the pressure difference with the inside of the heating block becomes smaller.

However, since the heat dissipation side tank is equipped with an air intake means that sucks air when the tank internal pressure becomes lower than atmospheric pressure by a certain amount,
The internal pressure of the tank is maintained above this set value, and a sufficient pressure difference between the tank and the inside of the heating block is always maintained, allowing prompt removal.

Embodiment One embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 denotes a heating section, which is composed of a heating means 11 and a heat exchange section 12, and a heating side block 14 is constituted by this heating section 10 and a heating side tank section 13 which is integrated with or adjacent to the heating section 10. A radiation source placed on the upper part of the heating side block 14 and at an arbitrary position. ! Heat dissipation section 16 provided inside the container 15
and are connected to each other by a steam pipe 17. The heat radiation side tank 1 is provided at a position above the auxiliary side tank part 13, and a part thereof is configured to be connected to the lower part of the heat radiation part 16 by a liquid pipe 19, and an appropriate amount of evaporative heat medium is contained inside. It is enclosed.

The vicinity of the lower part of the heat radiation side tank 18 and the vicinity of the upper part of the heating side tank section 13 are connected to a bypass pipe 21 in which a first check valve 20 is interposed.
It is communicated by. The first check valve 20 is configured to stop the flow of the similar medium liquid from the heating side tank portion 13 to the heat radiation side tank 18, and is a valve with low flow resistance in the forward direction. This valve is
Even if the opening/closing valve is configured to be driven in correlation with the liquid level or pressure of the heating side tank section 13 or the heat radiation side tank 18, the effect will not change in any way.

A second check valve 22 is interposed in a part of the liquid pipe 19,
This valve is configured to stop the flow of heat medium from the heat radiation side tank 18 to the heat radiation side 16, and has low flow resistance in the forward direction. This valve is also replaced with an on-off valve similar to the first check valve 20.

An exhaust valve 2 is installed at the upper part of the heat radiation side tank 18 as an intake/exhaust means.
3 and an intake valve 26 are installed, the exhaust valve 23 is designed to exhaust air and the intake valve 26 is operated at a pressure higher than atmospheric pressure by a certain value or more, and the intake valve 26 is operated at a pressure lower than atmospheric pressure by a certain value or more, respectively. There is.

In the above configuration, the heat medium liquid in the heat exchange part 12 is heated by the input supply to the heating means 11 of the heating part 10, and when it starts to evaporate, it becomes bubbles, and the heat medium vapor is separated into gas and liquid at the upper part of the heating side block. passes through the steam pipe 17 and reaches the heat radiating section 16 in the radiator 15. The condensed heat is radiated in the heat radiating section 16, and the heat medium vapor is condensed to become a heat medium liquid, which passes through the liquid pipe 19 and reaches the heat radiating side tank 18. If static electricity has entered the system due to slow leakage, this air will be swept away by the heat medium vapor and will remain in the heat radiation side tank 18.
The internal pressure of will gradually rise. but.

When the internal pressure reaches a set value (a pressure that is a certain value higher than atmospheric pressure), the exhaust valve 23 provided in the heat radiation side tank 18 is activated, and the intruding air is automatically discharged from the system.

When the steam is sent out in the heating section 10, the heat medium liquid decreases, and the heat medium liquid level in the heating side tank section 13 gradually decreases. When the liquid level detecting means 24 detects that the liquid level has become low, the time controlling means 25 causes the heating means 1 to
1 is stopped.

When heating is stopped and the heating side block 14 is cooled, the internal heat medium vapor condenses and the internal pressure begins to decrease. When the internal pressure of the heating side block 14 continues to decrease and the pressure on the heating side block 14 side of the first check valve 20 installed in the bypass pipe 21 becomes lower than the pressure on the heat radiation side tank 18 side, the heat radiation side tank 18 The heat medium liquid accumulated therein begins to be distantly transferred to the heating side tank section 13 through the bypass pipe 21. At this time, the gas phase inside the heat dissipation side tank 18 expands under reduced pressure as the heat transfer liquid decreases, and the internal pressure drops, but for some reason,
If there is a large amount of exhaust from the exhaust valve 23 during heat transfer, the pressure of the entire system is low, and the pressure inside the heat radiation side tank 18 reaches a set value (a certain value lower than atmospheric pressure) or less. . In this case, the intake valve 2 provided in the heat radiation side tank 18
6 is activated to perform intake, the pressure inside the tank is maintained above this set value, and the internal pressure of the heating side block 14 and
Distant relatives are performed quickly because a sufficient pressure difference can be maintained. As the distant phase advances, the liquid level in the heating side tank section 13 rises, and when the liquid level detection means 24 detects that the liquid level is sufficiently high, the time control means 25 starts supplying input to the heating means 11. be done. By repeating this cycle, heat is transferred from the heating section 10 to the heat radiation section 16.

In this way, the 5 exhaust valve 23 automatically exhausts the air that has entered the system due to slow leakage or intake air from the intake valve 26, thereby preventing abnormal pressure increases in the system and ensuring stable heat transfer at all times. This has the effect of maintaining performance.

In addition, the intake valve 26 automatically takes in air to maintain the tank internal pressure when there is an abnormal pressure drop in the heat dissipation side tank 18 during liquid permeation, so that liquid permeation can be performed quickly. It has the effect of being able to Furthermore, since air is taken in only when an abnormality occurs, the amount of air that enters the system is significantly reduced, and the amount of P vapor that is mixed with the air that enters and discharged to the outside during exhaust is reduced to a minimum of 1.
It has the effect of being suppressed by resentment.

Effects of the Invention As described above, the heat transfer device of the present invention provides the following effects.

(1) Since the exhaust means is provided at the position where static electricity that has entered the closed system accumulates, the intruded air can be reliably exhausted to the outside, and the abnormal pressure inside the system can be removed by This has the effect of preventing a decrease in the transfer rate and maintaining stable heat transfer performance at all times.

(2) Since the heat radiation side tank is equipped with an air intake means, the inside of the tank can always be maintained at a pressure lower than atmospheric pressure by a certain value, and a sufficient pressure difference between the inside of the heating side block and the inside of the heating side block can be maintained. It has the effect that liquid permeation can be carried out quickly and the time required for distant relatives can be shortened.

0) Since the suction/exhaust means operates only in abnormal conditions, the system can be maintained in a sealed state during normal conditions, and a sufficient amount of heat medium liquid can be maintained for a long period of time.

[Brief explanation of drawings]

Figure 1 is a configuration diagram of a heat transfer device according to an embodiment of the present invention;
The figure is a configuration diagram of a conventional heat transfer device. 10... Heating part, 13... Heating side tank, 14
... Heating side block, 16 ... Heat dissipation section,
17... Steam pipe, 18... Heat radiation side tank, 19... Liquid pipe, 20... First check valve, 21... Bypass pipe, 22...2nd
Check valve, 23...Exhaust valve, 24...Liquid level detection means, 25...Time control means, 26...
...Intake valve.

Claims (1)

[Claims] a heating side block consisting of a heating part and a heating side tank part, a heat radiation part, a heat radiation side tank, a steam pipe communicating between the upper part of the heating side block and one end of the heat radiation part, and the other end of the heat radiation part and the heat radiation side tank; a liquid pipe communicating with a part of the heat radiation side tank; a liquid return means for intermittently returning the heat medium liquid accumulated in the heat radiation side tank to the heating side block; and a vicinity of the lower part of the heating side tank part. a control means for controlling input/output to the heating section by the liquid level detecting means; and a control means for controlling input/output to the heating section by the liquid level detecting means; A heat transfer device consisting of intake and exhaust means that operate at a pressure lower than a certain value.