JPH0510596B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a heat transfer device that transfers heat even in top heat mode.

Conventional technology The conventional technology that transfers steam heat intermittently and in top heat mode is as follows.
As shown in FIG. 2, a heating side sealed chamber 22 into which the working fluid 21 is injected and a heat radiation side sealed chamber 23 where the working fluid 21 condenses are connected by a pipe body 24.
The opening at one end of the tubular body 24 is located above the working fluid 21 in the heating side sealed chamber 22, while the opening at the other end of the tubular body 24 is located near the bottom wall of the heat radiation side sealed chamber 23, and the working fluid 21 condensed there. Further, at least a portion of the tube body 24 is arranged above the top wall of the heat radiation side sealed chamber 23, and the working fluid condensed due to the reversal of the temperature of both sealed chambers. There is a method in which 21 is refluxed as a liquid without causing heat transfer (for example, Japanese Utility Model Publication No. 16067/1983). In addition, as another means, although it is not steam heat transfer, as a non-powered top heat mode heat transfer technology, as shown in Fig. 3, as the first stage of the cycle, a low tank 2
The hydraulic fluid 26 in the lower tank 25 is heated due to communication with the high temperature source 27, and the pressure in the lower tank 25 increases;
This causes displacement of hot hydraulic fluid 26 through valve 28 and conduit 29 to cold source 30. In this way, the liquid having the temperature of the hottest part of the high temperature source 27 reaches the low temperature source 30. This working fluid 26 is
After passing through the low temperature source 30 and being cooled, the liquid flows through the conduit 31, flows into the top of the high-level tank 32, and continues to flow while condensing the vapor of the working fluid 26 accumulated there.

As the second stage of the cycle, when the level of the hydraulic fluid 26 in the lower tank 25 decreases, it is detected by the detection means 33a at the lower part and the on-off valve 3 is activated in conjunction with the detection means 33a.
4 is opened, the pressure in the high tank 32 and the low tank 25 become equal due to the communication of the pressure equalizing pipe 35, and a flow is generated toward the high temperature source 27 and the low tank 25 through the conduit 36 and the check valve 37 due to the head difference.
When the level of the hydraulic fluid 26 in the lower tank 25 rises, it is detected by the upper detection means 33b and the linked on-off valve 34 is closed, starting a new cycle (for example, a special one). Publication No. 57-23795).

Problems to be Solved by the Invention In such conventional technology, in the former case, the temperature of the sealed chamber on the heating side is completely lower than the temperature of the sealed chamber on the heat radiation side, and furthermore, the pressure difference is increased by the head difference between the two sealed chambers. If a temperature difference does not occur until the temperature difference is reached, the working fluid accumulated in the closed chamber on the heat radiation side will not be refluxed, and there is a problem in that it takes a considerable amount of time to complete the reflux. In the latter case, the heat transfer coefficient is low because the liquid rather than the vapor of the working fluid flows into the heat radiating part, and there is a problem that a large heat radiating part is required.

Means for Solving the Problems In order to solve these problems, the present invention has the following features:
A heating side sealed block consisting of a heating section and a heating section sealed tank, a heat radiation section, a heat radiation side sealed tank, a conveying pipe communicating the upper part of the heating side sealed block and a part of the heat radiation section, and the other end of the heat radiation section. and a liquid pipe communicating with the vicinity of the upper part of the heat radiation side sealed tank. a bypass pipe with a check valve that connects the vicinity of the bottom of the sealed tank on the heat radiation side and the vicinity of the top of the sealed block on the heating side, and the inside of the sealed block on the heating side. A reflux liquid diffusion means is provided at the end of the bypass pipe.

Effect With the above configuration, the working fluid evaporates in the heating side sealing block, but initially the on-off valve provided on the on-off communication pipe is closed, and the check valve provided on the bypass pipe is closed on the heating side. Since the structure is designed to prevent leakage from the closed tank side, the vapor of the working fluid passes through the conveying pipe to the heat radiating section, where the latent heat of condensation is radiated, and the liquefied working fluid is sequentially pushed down the liquid pipe. The heat flows into the closed tank on the heat radiation side and is stored there.
Next, when the liquid in the heating side sealed block decreases, the on-off valve opens, and the pressure difference between the pressure inside the heat radiation side sealed tank and the pressure inside the heating side sealed block becomes small due to the action of the opening/closing communication pipe, and the heat radiation side is thus sealed. Because the tank is located above the heating section sealed tank, the working fluid passes from the heat dissipation side sealed tank through the bypass pipe and starts to flow back into the heating section sealed tank due to the differential pressure between the heads. Since the liquid is poured from the top of the heating section sealed tank, heat exchange occurs, which further reduces the vapor pressure inside the heating section sealed tank, and the pressure difference with the heat dissipation side sealed tank increases, so that it is quickly refluxed. .

Embodiment An embodiment of the present invention will be described below with reference to FIG.

The heating section 1 is composed of a heat exchanger and a gas-liquid separator 2 disposed above the heat exchanger in communication with the heat exchanger. Heat exchanger and gas-liquid separator 2
A heating section sealed tank 3 is disposed approximately midway between the heating section sealed tank 3 and the heat exchanger. It is connected to the upper part of the partially sealed tank 3 through a communication pipe 5, forming a heating side sealed block. Note that even if the gas-liquid separator 2 and the heating section sealed tank 3 are configured integrally, the effects of the present invention will not change in any way.

The heat dissipation section 6 is composed of a heat dissipation pipe 7 and a heat dissipation fin 8 , and the upper part of the heat dissipation section 6 and the upper part of the gas-liquid separator 2 are connected to each other by a conveying pipe 9 .

The heat radiation side sealed tank 10 is provided above the heating part sealed tank 3, and the heat radiation part 6 is located near the top of the tank 10.
The lower part of the pump is communicated with a liquid pipe 11, and the whole is configured in a sealed state, and an appropriate amount of evaporative working fluid 12 is sealed inside. The upper part of the heating side sealed block and the upper part of the heat radiation side sealed tank 10 are connected to the on-off valve 13.
are communicated by an opening/closing communication pipe 14 disposed between them.

The on-off valve 13 is a liquid level detection means 1 provided near the upper and lower parts of the heating section sealed tank 3.
5, 16 to open and close. A perforated plate 17 serving as a diffusion means for the working fluid 12 is provided near the opening of the liquid pipe 11 inside the heat radiation side sealed tank 10 .

The vicinity of the lower part of the heat radiation side sealed tank 10 and the vicinity of the upper part of the heating part sealed tank 3 are communicated by a bypass pipe 19 with a check valve 18 disposed therebetween.

The check valve 18 is a valve that has a structure that stops the flow from the heating section sealed tank 3 to the heat radiation side sealed tank 10 and has low flow resistance in the forward direction.

A porous pipe 2 serving as a means for diffusing the working fluid 12 is provided at the opening of the bypass pipe 19 in the heating section sealed tank 3.
0 is set.

In the above configuration, the on-off valve 13 is initially closed, and when the working fluid 12 in the heat exchanger is heated by the operation of the heating section 1 and begins to evaporate, it becomes bubbles and reaches the gas-liquid separator 2, where The separated vapor passes through the conveying pipe 9 and reaches the heat radiating section 6 . The working fluid 12 liquefied by the heat of condensation carried away by the heat dissipation pipe 7 and the heat dissipation fins 8 flows down inside the heat dissipation pipe 7, passes through the liquid pipe 11 from the lower part of the heat dissipation part 6, and reaches the heat dissipation side sealed tank 10. The working fluid 12, which has been cooled down to a low temperature by the heat radiation section 6, is diffused by the perforated plate 17 and the surface area increases, so that the working fluid 12 in the heat radiation side sealed tank 10 is
By efficiently condensing the steam at a rapid rate and lowering the pressure, it easily flows into the heat radiation side sealed tank 10, and furthermore, due to the balance with the pressure of the heating section 1, the steam in the heat radiation side sealed tank 10 is reduced. Compress non-condensable gases. When steam is sent out in the heating section 1 and the working fluid 12 decreases, the working fluid 12 is supplied from the heating section sealed tank 3 via the liquid supply pipe 4, and steady operation is continued.

Here, when the supply of the working fluid 12 from the heating section sealed tank 3 exceeds a certain amount and the liquid level decreases, the lower level detection means 16 detects this, and at the same time the on-off valve 13 is opened and the on-off communication pipe 14 is detected. This brings the heating side sealed block and the heat radiation side sealed tank 10 into communication, reducing the pressure difference, and the hydraulic fluid 1 stored in the heat radiation side sealed tank 10 due to the head difference.
2 immediately flows back to the heating section sealed tank 3 through the bypass pipe 19. The working fluid 12 that has reached the heating section sealed tank 3 is diffused by the porous pipe 20 to increase its surface area, and the vapor of the working fluid 12 in the heating section sealed tank 3 is efficiently condensed, rapidly lowering the temperature and pressure. Since the amount of evaporation to the heat radiation side sealed tank 10 is reduced, the pressure loss during passage through the open/close communication pipe is reduced, and the pressure difference between the heat radiation side sealed tank 10 and the heating side sealed block is further reduced, accelerating reflux.

As the working fluid continues to flow back into the heating section sealed tank 3, the liquid level rises and is finally detected by the level detection means 15 at the top, the on-off valve 13 is closed and the back flow is stopped, and the fluid level rises again. Steam is sent from the heating-side sealed block to the heat radiating section and heat transfer begins.

Note that as the heating source 1, a solar collector, electric heating, oil heating, gas heating, etc. can be selected as appropriate.

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

(1) The heat radiation side sealed tank is installed above the heating side sealed block, and the upper part of the heat radiation side sealed tank and the upper part of the heating side sealed block are connected through an on-off communication pipe with an on/off valve, and the upper part of the heat radiation side sealed tank is connected to the vicinity of the bottom of the heat radiation side sealed tank. The heating side sealing block is connected to the vicinity of the upper part by a bypass pipe with a check valve, and the reflux liquid diffusion means is provided at the end of the bypass pipe in the heating side sealing block, so the on-off valve can be opened. Since the return of the working fluid begins immediately and is completed within a short time, the heat transfer stop time is significantly shortened and the amount of heat transfer can be increased.

[Brief explanation of drawings]

FIG. 1 is a system configuration diagram of a heat transfer device showing an embodiment of the present invention, FIG. 2 is a schematic configuration diagram of a conventional heat transfer device, and FIG. 3 is a schematic flow chart of another conventional heat transfer device. . 1... Heating section, 3... Heating section sealed tank, 6...
... Heat radiation section, 10 ... Heat radiation side sealed tank, 14 ...
Opening/closing communication pipe, 19...bypass pipe.

Claims (1)

[Claims] 1. A heating side sealed block consisting of a heating section and a heating section sealed tank, a heat radiation section, and a heat radiation side sealed tank,
A conveying pipe that communicates between the upper part of the heating side sealed block and a part of the heat radiating section, a liquid pipe that communicates the other end of the heat radiating section and the vicinity of the top of the heat radiating side sealed tank, and the heat radiating side sealed tank. an opening/closing communication pipe with an on-off valve, which is located above the heating side sealed block and is provided to connect the upper part of the heat radiation side sealed tank with the upper part of the heating side sealed block; A heat transfer device comprising a bypass pipe with a check valve that connects the vicinity of the lower part and the vicinity of the upper part of the heating side sealing block, and a reflux liquid diffusion means provided at the end of the bypass pipe in the heating side sealing block. .