JPS61276696A - Heat conveying device - Google Patents

Abstract

PURPOSE:To prolong the intermittent driving cycle and shorten the stop time of a heat source by utilizing the evaporation latent heat of a heat medium to improve the heat carrying efficiency by providing a bypass tube which connects the vicinity of the lower part of the radiation side to a part of a heating side block, and interposing a check valve at a part of a bypass pipe and also a check valve at a part of a liquid tube. CONSTITUTION:A heat medium within a heat exchanger is heated and evaporated by the operation of a heating part 10. The heat medium steam separated by a gas- liquid separator 13 condenses and radiates latent heat at a heat radiating part 18 and is converted to a heat medium liquid, reaching a heat radiating side tank 20 via a liquid tube 21 and a check valve 26. When the heat medium liquid surface within a heating side tank 14 is gradually lowered and the liquid surface of the heat medium is detected by lower level detecting means 24b, the operation of the heat source 11 is stopped. The steam of the heat medium within a heating side block 17 condenses and the pressure is abruptly lowered. When the heat medium liquid passing through a check valve 22 interposed in a bypass tube 23 is circulated to the heating side tank 14, the level of the liquid within the tank 14 rises up. When it is detected by upper level detection means 24a, the operation of the heat source 11 is started.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a heat transfer device that transfers heat without a device such as a pump, regardless of the positional relationship between a heating section and a heat radiating section.

BACKGROUND OF THE INVENTION Conventionally, this type of heat transfer device that uses steam pressure to transfer heat intermittently and also downward has been used as shown in FIG.
The heat medium liquid containers 1.2 arranged above and below are connected to two communication passages 3.4.
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 thereof, and the other communication passage 4 connects the lower part of the upper container 1 with a part of the lower container 2. 1 and the vicinity of the lower part of the lower container 2, and a radiator 6 is interposed in the middle thereof,
A heating device 7 is provided in correspondence with the lower container 2.
In addition to providing liquid level detection devices 8 at two points, upper and lower, within the container, a control mechanism 9 is provided for controlling a heating device 7 based on signals from the liquid level detecting devices 8. The heat medium liquid is heated, and due to its vapor pressure, the heat medium liquid passes through the communication path 4, radiates heat through a radiator 6 interposed in the middle, and is stored in the upper container 1. As the heating continues, the level of the heat medium liquid in the lower container 2 decreases and when it reaches the lower detection position of the liquid level detector 8, the control mechanism 9 stops the operation of the heating device 7. When the heating stops and the vapor pressure in the lower container 2 decreases, the heat transfer liquid stored in the upper container 1 is moved by gravity and atmospheric pressure to the communication path 3 and the check valve 5 interposed therebetween.
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. In the cycle, heat was exchanged using the sensible heat of the heat transfer fluid. (For example, Japanese Utility Model Publication No. 59-14650) Problems to be Solved by the Invention However, in the above configuration, since heat exchange is performed using the sensible heat of the heat medium liquid, the unit weight of the heat medium liquid is Since the amount of heat transferred per unit is determined by the heat capacity and temperature difference, unless a large amount of heat transfer liquid is stored in the container, there is a problem that the on-off cycle of the heating device will be shortened and the operating efficiency will be reduced. Was.

The present invention solves such conventional problems, and aims to improve heat transfer efficiency by lengthening the intermittent operation cycle and shortening the stop time of the heating source by utilizing the latent heat of vaporization of the heat medium.

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 section and a heating side tank, a heat radiation section, a heat radiation side tank, and a heating side block. It consists of a steam pipe that communicates between the upper part and one end of the heat dissipation section, a liquid pipe that communicates the other end of the heat dissipation section with a part of the heat dissipation side tank, and a control means that controls the on/off of the heat source of the heating section. A bypass pipe is provided that connects the vicinity of the lower part of the side tank and a part of the heating side block, and a check valve or an on-off valve is installed in a part of the bypass pipe, and a check valve or an on-off valve is also installed in a part of the liquid pipe. It is equipped with an on-off valve.

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 top of the heating side block and reaches the heat radiation section, where the heat medium vapor radiates latent heat of condensation and condenses, and the liquefied heat medium liquid passes through the liquid pipe and radiates heat. Flows into the side tank. As the operation in the heating mode progresses, the level of the heat medium liquid in the heating side tank decreases, and when the liquid level reaches a certain level, the control means stops the operation in the heating mode and enters the fast wave mode. When the heating side block is cooled, the internal heat medium vapor condenses and the internal pressure decreases, and due to the backflow closing action of the check valve or on-off valve installed in the liquid pipe, the pressure suddenly decreases without being compressed by the liquid piston. decreases.

When the pressure on the side of the check valve or on-off valve connected to the heating side block installed in the bypass pipe becomes low, the heat transfer liquid stored in the heat radiation side tank passes through the bypass pipe and waves to the heating side block. . As the fast waves continue, the liquid level in the heating side tank rises, and when it reaches a certain level, the control means starts operating the heating mode and this cycle is repeated to transfer heat.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

In FIG. 1, 10 is a heating section, and a heat source 1 such as a heater.
1, a heat exchanger 12, and a gas-liquid separator 13 disposed above and in communication with the heat exchanger 12.

A heating side tank 14 is disposed approximately in the middle between the heat exchanger 12 and the gas-liquid separator 13, and this heating side tank 14
The lower parts of the heat exchanger 12 and the heat exchanger 12 are connected to each other by a liquid supply pipe 15, and a part of the gas-liquid separator 13 and the heating side tank 14 are connected to each other by a liquid supply pipe 15.
It is connected to the upper part of the heating side block 17 by a communication pipe 16.
is configured.

The upper part of the heat radiation part 18 and the upper part of the gas-liquid separator 13 are connected to each other by a steam pipe 19. Heat radiation side tank 2o
is provided at a position above the heating side tank 14, and the vicinity of its upper part is configured to communicate with the lower part of the heat radiating part 18 by a liquid pipe 21, and an appropriate amount of evaporative heat medium is sealed inside.

The vicinity of the lower part of the heat radiation side tank 20 and the upper part of the heating side tank are communicated by a bypass pipe 23 in which a check valve 22 is interposed.

The check valve 22 has a structure that stops the flow of the heat medium liquid from the heating side tank 14 to the heat radiation side tank 20, and is a valve with low flow resistance in the forward direction. Even if this valve is an on-off valve configured to be driven in correlation with the liquid level of the heating side link 14 or the heat radiation side tank 20, the effect will not change in any way.

The heating type tank 14 is provided with level detection means 24a and 24b for detecting the internal liquid level, and is provided with a control means 25 for controlling the on/off of the heat source 11 based on the signals and the like.

Even if the level detection means 24a, 24b are arranged in the heat radiation side tank 20, their purpose does not change in any way. A check valve 26 is interposed in a part of the liquid pipe 21, and the check valve 26 connects the heat radiation side tank 21 to the steam pipe 1.
This check valve 26 has a structure that stops the flow in nine directions, and even if it is an on-off valve configured to be driven in correlation with the liquid level of the heating side tank 14 or the heat radiation side tank 20, it will not have any effect. will not change.

Further, the positional relationship between the heat radiation side tank 20 and the heating side block 17 is not restricted.

In the above configuration, the heat medium liquid in the heat exchanger 12 is heated by the operation of the heating unit 10, and when it starts to evaporate, it becomes bubbles and reaches the gas-liquid separator 13, where the heat medium vapor is separated into gas and liquid. passes through the steam pipe 19 and reaches the heat radiation section 18. The latent heat of condensation is radiated in the heat radiating section 18, and the heat medium vapor is condensed to become a heat medium liquid, which passes through the liquid pipe 21 and the check valve 26 and reaches the heat radiating side tank 20.

When steam is sent out in the heating section 10 and the heat medium liquid decreases, the heat medium liquid is supplied to the heating side tank 14 via the υ liquid supply pipe 15, and normal operation is maintained. The heat medium liquid level in the heating side tank 14 gradually decreases.

When the liquid level in the heating tank 14 finally falls and is detected by the lower level detection means 24b, the control means 25 starts and stops the heat source 11 of the heating section 10.

When the heating stops and the heating side block 17 is cooled, the internal heat medium vapor condenses and the internal pressure decreases, and due to the backflow closing action of the check valve 26 installed in the liquid pipe 21, the liquid piston There is no compression caused by this, and combined with the cooling effect of the heat radiating section 18, the pressure rapidly decreases.

The internal pressure of the heating side block 17 continues to decrease, and the bypass pipe 2
When the pressure on the heating side block 17 side of the check valve 22 installed in A fast wave is transmitted to the heating side tank 14. As the fast waves continue, the liquid level in the heating side tank 14 rises, and the upper level detection means 2
4a, the heat source 11 of the heating section 10 is started by the control means 25, and this cycle is repeated to transfer the heat of the heating section 10 to the heat radiation section 18.

Here, since the heat medium vapor is conveyed from the heating section 10 to the heat radiation section 18, the latent heat of condensation of the steam can be used, and the amount of heat conveyed per unit weight is smaller than when sensible heat is used by conveying the heat medium liquid. It can be made very large. Therefore, even if the volume of the heating side tank 14 is small, the intermittent operation cycle time can be lengthened, so the operation efficiency is improved, and since the amount of heat medium liquid is also reduced, the time to complete the liquid passage can be further shortened. This has the effect of improving the overall heat transfer efficiency.

In the present invention, the effectiveness is the same whether it is an open system or a closed system.

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

(1) Controls on/off of the steam pipe that communicates between the upper part of the heating side block and one end of the heat radiation section, the liquid pipe that communicates the other end of the heat radiation section and a part of the heat radiation side tank, and the heating section heat source. A bypass pipe is provided that connects the vicinity of the lower part of the heat radiation side tank and a part of the heating side block, and a check valve or an on-off valve is interposed in the bypass pipe, and a reverse control means is provided in a part of the liquid pipe. Since the structure is equipped with a stop valve or an on-off valve, the intermittent operation cycle time can be lengthened even if the internal volume is reduced, and the operation efficiency can be improved.

(2) Since the internal volume can be reduced to reduce the amount of heat medium enclosed, there is an effect that the reflux completion time is short and the overall heat transfer efficiency can be improved.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a heat transfer device according to a first embodiment of the present invention, and FIG. 2 is a configuration diagram of a conventional heat transfer device. 10... Heating part, 14... Heating side tank, 17... Heating side block, 18...
Heat radiation section, 19... Steam pipe, 20... Heat radiation side tank, 21... Liquid pipe, 22... Check valve, 23...・Bypass pipe, 26...
regurgitation valve. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] a heating side block consisting of a heating section and a heating side tank, a heat radiation section, 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 section, and the other end of the heat radiation section and the heat radiation side tank; A bypass pipe that connects the vicinity of the lower part of the heat radiation side tank and a part of the heating side block, comprising a liquid pipe that communicates with a part of the heat radiation side tank, and a control means that controls on/off of the heating section heat source. A heat transfer device comprising: a check valve or an on-off valve interposed in the bypass pipe, and a check valve or an on-off valve interposed in a part of the liquid pipe.