JPS60233494A - Heat transfer device - Google Patents

Abstract

PURPOSE:To reduce the difference in temperature between a vapor generator and a heat exchanger as well as enhance the feeding performance of heat by positioning the first and second tanks into or from which a working liquid is flowed or discharged above the generator. CONSTITUTION:A working liquid 12 in a collector (or generator) 1 is boiled and vaporized by insolation, and the liquid 12 heated by raising the internal pressure of the collector 1 is pushed through a subtank 14 into a heat exchanger 3 and heat-exchanged with hot water supplied in the heat exchange tank 2. The liquid 12 so cooled is then sent to the first tank 17a. When the level of the liquid 12 in the tank 17a is raised and reaches a given height, the first valve mechanism 18a is pushed up by the first liquid level sensor 6a and becomes opened, and the second valve mechanism 18b is pushed down by the valve controller 19 and becomes closed. The working liquid 12 in the first tank 17a is refluxed to the collector 1 and the liquid 12 cooled by heat exchange in the heat exchanger 3 is flowed into the second tank 17b.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a non-powered heat transfer device used in solar water heaters, waste heat recovery devices, air conditioners, and the like.

Conventional structure and its problems A conventional heat transfer device of this type was constructed as shown in FIG. A heat exchange tank 2 storing hot water is arranged below a collector 1 (generator) consisting of a plurality of heat collecting pipes, and a non-heat exchanger 3 housed within the tank 2 and a check valve 4a are installed in the middle of the collector 1. They are connected by an outgoing pipe 5 provided with a.

A liquid reservoir tank 7 in which a liquid level detection means 6 is housed is arranged above the collector 1, connected to the heat exchanger 3 through a return pipe 8, and connected to the collector 1 with a check valve 4b in the middle. Furthermore, the upper part of the liquid reservoir tank 7 and the upper part of the collector 1 are connected by a communication pipe 11 having an on-off valve 1° (valve mechanism) provided in the middle. The level of the hydraulic fluid 12 is controlled by a controller 13 that opens the on-off valve 10 when the level of the hydraulic fluid 12 detected by the fluid level detection means 6 becomes larger than a set value H.

The working fluid 12 boils and evaporates when the collector 1 is heated by sunlight, and by increasing the pressure inside the collector 1, the heated working fluid 12 passes through the outgoing pipe 5 and is pushed into the heat exchanger 3, and is transferred to the heat exchange tank. The working fluid 12 that has been cooled by exchanging heat with the hot water in the tank 2 is sent to the liquid storage tank 7 through the return pipe 8, and the level of the working fluid 12 in the liquid storage tank 7 gradually rises. go. Hydraulic fluid 12 detected by liquid level detection means 6
When the liquid level becomes larger than the set value H, the on-off valve 10 is opened by the controller 13, and the upper part of the collector 1 and the upper part of the liquid reservoir tank 7 are communicated with each other through the communication pipe 11, and the pressure inside the collector 1 becomes lower than the liquid level. The working fluid 12 in the fluid reservoir tank T is guided to the reservoir tank 7 and collected into the collector 1 through the layer pipe 9. When the level of the hydraulic fluid 12 decreases and becomes smaller than the set value H, the controller 13 closes the on-off valve 10 and the collection of the hydraulic fluid 12 to the collector 1 is completed.

In this configuration, when the on-off valve 10 is open, the hydraulic fluid 12 in the fluid reservoir tank 7 flows into the collector 1 due to its own weight, but the flow of the hydraulic fluid 12 through the heat exchanger 3 is stopped and heat exchange is not possible. I had a problem with it disappearing.

On the other hand, even when the on-off valve 10 is closed, the flow velocity of the working fluid 12 in the heat exchanger 3 quickly decreases due to the inertia of the working fluid 12 stopped in the outgoing pipe 5, heat exchanger 3, and return pipe 8. There was also the problem that the heat exchange performance did not increase and a predetermined heat exchange performance could not be obtained.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned problems of the conventional art, and aims to reduce the temperature difference between the generator and the heat exchanger by making the flow of the working fluid continuous and increasing the circulating flow rate. The purpose is to improve heat transfer performance by increasing the heat exchange performance of

Structure of the Invention In order to achieve the above object, the present invention provides a control system in which the upper part of a liquid reservoir tank, which is divided into a first tank and a second tank each having a valve seat on the upper part, and a gas introduction part are integrally constructed. The tank is positioned above the generator and opens and closes by contacting the valve seats of the first tank and the second tank, and the first valve mechanism and the second valve mechanism are controlled by the liquid level detection means. The first part contacts the top and both ends and rotates around the center as a fulcrum.
A valve controller is provided that alternately opens and closes the valve mechanism and the second valve mechanism.

With this configuration, when the first valve mechanism is open and the hydraulic fluid in the first tank is flowing into the generator, the second valve mechanism is closed by the valve controller and the hydraulic fluid in the generator is flowing into the generator. The heat is exchanged in the heat exchanger and flows into the second tank, and when the first valve mechanism is closed, the working fluid that has been heat exchanged in the heat exchanger flows into the first tank. The flow of working fluid into the vessel and heat exchanger is continuous.

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

The same members as in FIG. 1 are given the same numbers and their explanations are omitted. A sub-tank 14 provided above the collector 1 (generator) is connected by piping to the upper part of the collector 1, and the outgoing pipe 5 is connected to the lower part and the communication pipe 11 is connected to the upper part. The control tank 15 consists of a liquid reservoir tank 7 and a gas introduction section 16, and the liquid reservoir tank 7 is further divided into a first tank 17a and a second tank 17b. The first valve mechanism 18m and the second liquid level detecting means 6bK are opened and closed by the first valve mechanism 18m and the second liquid level detecting means 6bK, which are in contact with the upper inclined valve seats of the first tank 17a and the second tank 17b, and are opened and closed by the first liquid level detecting means 6a. second valve mechanism 1
8b, each communicates with the gas introduction section 16. The valve controller 19 rotates around the center as a fulcrum, and has both ends contacting the upper portions of the first valve mechanism 18a and the second valve mechanism 18b, thereby alternately opening the first valve mechanism 18a and the second valve mechanism 18b.・It is blocked. Check valves 4a and 4b are provided above the first tank 6a and the second tank 6b, and
The heat exchanger a and the return pipe 8 are connected in parallel, and the first tank 6a
Check valves 4c and 4d are disposed at the lower part of the second tank 6b, and are connected in parallel with the collector 1 and the original pipe 9,
The gas introduction part 16 and the upper part of the sub-tank 14 are connected by a communication pipe 11.

The working fluid 12 boils and evaporates when the collector 1 is heated by sunlight, and by increasing the pressure inside the collector 1, the heated working fluid 12 is sent to the sub-tank 14 in two phases of gas and liquid, where the gas and liquid are separated. The working fluid 12 passes through the outgoing pipe 5 and is pushed into the heat exchanger 3, and the working fluid port, which is cooled by exchanging heat with hot water in the heat exchange tank 2, passes through the returning pipe 8 and is transferred to the first tank 17a. sent to. At this time, the first valve mechanism 18a is in a closed state and the second valve mechanism 18b is in an open state. The liquid level of the hydraulic fluid 12 in the first tank 17a rises and when it reaches a predetermined height H, the first valve mechanism 18a is pushed up by the first liquid level detection means 6a and becomes open, and the valve controller 19 pushes down the second valve mechanism 18b and enters the closed state. The collector 1 and the first tank 17a are communicated with each other, and the working fluid 12 in the first tank 17a is returned to the collector 1 through the raw pipe 9, and is cooled by exchanging heat with the heat exchanger 3. 17b. Second tank 17b
The liquid level of the hydraulic fluid 12 rises and when it reaches a predetermined height H, the second valve mechanism 18b is pushed up by the second liquid level detection means 6b to open the second valve mechanism 18b, and the valve controller 19 The valve mechanism 18a is pushed down and closed, and the working fluid 12 in the second tank 17b flows back to the collector 1 through the raw tube 9, and the working fluid 12 is cooled by exchanging heat with the heat exchanger 3. It flows into the first tank j7a. Therefore, when the hydraulic fluid 12 flows into the first tank 17a, the hydraulic fluid 12 flows into the second tank 17a.
The hydraulic fluids 1 and 2 in the tank 17b will flow out,
On the other hand, when the working fluid 12 flows into the second tank 17b, the working fluid 12 in the first tank 17a flows out, and the flow of the working fluid 12 in the collector 1 and the heat exchanger 53 is continuous. , furthermore, since there is no resistance due to inertia, the hydraulic fluid 12
The flow rate is increased, the heat exchange capacity is increased, and the heat transfer performance is improved.

Effects of the Invention The heat transfer device of the present invention includes a control tank which is divided into a first tank and a second tank, each having a valve seat on its upper part, and in which the upper part of the saliva storage tank and the gas introduction part are integrated. The upper parts of the first valve mechanism and the second valve mechanism are located above the generator and are in contact with the valve seats of the first tank and the second tank to open and close the valve and are controlled by the liquid level detection means. A valve controller is provided that contacts the valve at both ends and rotates around the center as a fulcrum to alternately open and close the first valve mechanism and the second valve mechanism, so it operates alternately in the first and second tanks. Since the liquid can flow in and out, the flow of the working liquid in the generator and the heat exchanger becomes continuous, thereby improving the heat exchange performance and thereby improving the heat transfer performance.

[Brief explanation of the drawing]

FIG. 1 is a system diagram of a conventional heat transfer device, and FIG. 2 is a system diagram of a heat transfer device according to an embodiment of the present invention. 1... Generator, 3... Heat exchanger, 5.
... Outgoing pipe, 6a, 6b... Liquid level detection means, 7... River/liquid storage tank, 8... Return pipe, 9.
...Main pipe, 11...Communication pipe, 12...
...Hydraulic fluid, 15...Control tank, 16...
...Gas introduction part, 17a...First tank,
17b...Second tank, 18a...First valve mechanism, 18b...Second valve mechanism, 19...
...Valve controller. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 10 Figure 2

Claims (1)

[Claims] a generator in which a working fluid of a latent heat medium is sealed; a heat exchanger located below the generator; and a first tank and a second tank located above the generator, each having a valve seat on its upper part. a control tank in which an upper part of a divided liquid reservoir tank and a gas introduction part are integrally configured; the first tank and the second tank;
A first valve mechanism and a second valve mechanism that open and close the tank by contacting the valve seat of the tank and are controlled by a liquid level detection means.
a valve mechanism, and a valve controller that contacts upper portions and both ends of the first valve mechanism and the second valve mechanism, rotates around the center as a fulcrum, and alternately opens and closes the first valve mechanism and the second valve mechanism. an outgoing pipe that connects the generator and the heat exchanger, a return pipe that connects the heat exchanger and the upper portions of the first tank and the second tank in parallel, and the generator and the first tank. A heat transfer device comprising a layer pipe that connects the tank and the lower part of the second tank in parallel, and a communication pipe that connects the upper part of the generator and the gas introduction section.