JPH0735956B2 - Heat carrier - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat transfer device that is used in a cooling and heating hot water supply device, an exhaust heat recovery device, a solar heat utilization device, and the like, and uses a latent heat medium as a working liquid.

2. Description of the Related Art A conventional heat transfer device of this type is configured as shown in FIG.

Liquid reservoir tank 3 containing float 2 above generator 1
And a liquid reservoir separator 4 is provided between the generator 1 and the liquid reservoir tank 3. The vapor introducing section 5 is provided on the upper part of the liquid reservoir tank 3, and the opening / closing valve 7 for contacting the upper portion of the float 2 and opening / closing the connection port 6 between the liquid reservoir tank 3 and the vapor introducing section 5 by its vertical movement is provided with the vapor introducing section 5. Is installed internally. The lower part of the liquid reservoir separator 4 and the upper part of the generator 1 are connected by a gas outflow pipe 8, and the lower part of the generator 1 is connected by a liquid return pipe 9. The upper part of the liquid storage separator 4 and the vapor introduction part 5 are connected by a communication pipe 10, and the lower part of the liquid storage tank 3 and the liquid storage separator 4 are connected by a return pipe 12 provided with a check valve 11A on the way. The upper part of the heat exchanger 13 and the upper part of the liquid reservoir separator 4 are connected by a forward pipe 14, and the lower part of the heat exchanger 13 and the liquid reservoir tank 4 are connected by a return pipe 15 provided with a check valve 11B in the middle. ing. The hydraulic fluid 16 in the liquid storage tank 3 causes buoyancy in the float 2, and the vertical movement of the float 2 controls the opening / closing valve 7.

The pressure in the liquid storage tank 3 is controlled by the first on-off valve 6, the hydraulic fluid 16 is pressure-fed from the generator 1 to the heat exchanger 13, and heat is transferred.

Problems to be Solved by the Invention However, in the above configuration, since the capacity of the liquid reservoir separator 4 is smaller than the capacity of the liquid reservoir tank 3,
When the on-off valve 7 is opened, the hydraulic fluid 16 in the liquid storage tank 4 overflows when it is collected in the liquid storage separator 4 and does not function as a gas-liquid separator, which hinders the recovery and the gas outflow pipe 8 causes the liquid to flow. Since it is connected to the lower part of the reservoir separator 4, the cold working fluid 15 recovered from the reservoir tank 3 and the working fluid 15 heated by the generator 1 are mixed in the reservoir separator 4 to the generator 1. Since the hot working fluid 15 flows in, the heat exchange performance in the generator 1 is deteriorated.

The present invention solves such a conventional problem, and an object of the present invention is to facilitate the recovery of the working liquid from the liquid storage tank to the liquid storage separator and further improve the heat exchange performance in the generator.

Means for Solving the Problems In order to solve the above problems, the heat transfer device of the present invention connects the upper part of the liquid storage separator and the upper part of the generator with a gas upstream pipe to return the lower part of the liquid storage separator and the lower part of the liquid storage tank. It is connected by a pipe.

Action The present invention, by the above configuration, the working fluid accumulated in the liquid storage separator is not agitated by the vapor of the working fluid flowing from the gas outgoing pipe to the liquid storage separator,
Further, since the cold working fluid is collected from the liquid storage tank to the lower part of the liquid storage separator through the return pipe, there is no deterioration in the function of the liquid storage separator as a gas-liquid separator,
Moreover, the high temperature working fluid does not flow into the generator.

Example An example of the present invention will be described below with reference to FIG. The same members having the same functions as those in FIG. 2 are designated by the same reference numerals and the description thereof is omitted.

The capacity of the liquid reservoir separator 4 is made larger than the capacity of the liquid reservoir tank 3, and the upper part of the liquid reservoir separator 4 and the upper part of the generator 1 are connected by the gas upstream pipe 8, and the lower part of the liquid reservoir separator 4 and the liquid reservoir tank 3 are connected. The lower part is connected by a return pipe 12.

When the working fluid 13 is heated in the generator 1, the working fluid 13 evaporates by boiling, and the pressure in the generator 1 is increased, so that the vapor of the working fluid 16 from the upper portion of the generator 1 passes through the gas forward pipe 9 and the liquid storage separator. 4, the vapor and liquid are separated, and only the vapor is sent to the heat exchanger 13 through the outward pipe 14 to radiate heat to be condensed and liquefied, and the liquid of the working fluid 16 is sent to the liquid reservoir tank 3 through the return pipe. The liquid level of the hydraulic fluid 16 is raised. When the first opening / closing valve 7 is pushed upward by the buoyancy of the float 2, the high-pressure working fluid 16 vapor is introduced from the vapor introducing section 5 and the pressure in the liquid reservoir tank 3 becomes equal to the pressure in the liquid reservoir separator 4. The hydraulic fluid 16 in the liquid reservoir tank 3 is recovered by the liquid reservoir separator 4 by the action of gravity. When the float 2 is lowered and the first opening / closing valve 7 is closed as the liquid level of the hydraulic fluid 16 in the liquid storage tank 3 is lowered, the recovery of the hydraulic fluid 16 is completed. Liquid reservoir separator 4
Since the hydraulic fluid 16 is collected in the lower part of the
The cold hydraulic fluid 16 flows into the generator 1 and is heated without stirring the inside.

Thus, in the above embodiment, the liquid reservoir separator 4
Since the capacity of the working fluid 16 is larger than that of the fluid storage tank 3, the collection of the working fluid 16 from the fluid storage tank 3 to the fluid storage separator 4 is facilitated, and the working fluid 16 in the fluid storage separator 4 is
Is not agitated, and the cold hydraulic fluid 16 recovered from the liquid storage tank 3 flows into the generator 1 through the liquid return pipe 9, so that the heat exchange performance in the generator is not deteriorated.

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

(1) Since the lower part of the liquid storage separator and the lower part of the liquid storage tank are connected by the return pipe, and the upper part of the liquid storage separator and the upper part of the generator are connected by the gas upstream pipe, the vapor of the high temperature working liquid and the low temperature are connected in the liquid storage separator. The working fluid of does not stir and mix,
Since high-temperature steam is sent to the outflow pipe and communication pipe, and low-temperature liquid is sent to the liquid return pipe, recovery of the working liquid from the liquid storage tank to the liquid storage separator is facilitated, and the heat exchange performance of the generator is improved. There is no decline.

(2) Since the liquid head of the working liquid in the liquid storage separator can also be used as a circulating force of the working liquid circulating between the generator and the liquid storage separator, the heat exchange performance of the generator is improved.

[Brief description of drawings]

FIG. 1 is a block diagram of a heat transfer device according to an embodiment of the present invention, and FIG.
The figure is a block diagram of a conventional heat transfer device. 1 ... Generator, 3 ... Liquid storage tank, 4 ... Liquid storage separator, 8 ... Gas forward pipe, 9 ... Liquid return pipe, 10 ... Communication pipe, 12 ... Return pipe, 13 ... Heat Exchanger, 14 …… Outgoing pipe, 15 ……
Reinstatement.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Shigeru Iwanaga 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References

Claims (2)

[Claims] 1. A generator containing a working fluid of a latent heat medium to generate steam thereof, a liquid storage tank located above the generator, a heat exchanger for cooling the working fluid, the generator and the generator. A liquid storage separator located in the middle of the liquid storage tank, a communication pipe connecting the liquid storage separator upper part and the liquid storage tank upper part with a first opening / closing valve in the middle, and the liquid storage separator upper part and the heat exchange separator. A forward pipe connecting the upper part of the vessel, a return pipe connecting the liquid reservoir tank and the lower part of the heat exchanger, a return valve provided with a check valve in the middle connecting the lower part of the liquid reservoir separator and the lower part of the liquid reservoir tank. A heat transfer device comprising a pipe, a gas feed pipe connecting the upper part of the liquid storage separator to the upper part of the generator, and a liquid return pipe connecting the lower part of the liquid storage separator to the lower part of the generator. 2. The heat transfer device according to claim 1, wherein the capacity of the liquid storage tank is smaller than the capacity of the generator and the capacity of the liquid storage separator.