JPH0228077B2 - NETSUHANSOSOCHI - Google Patents

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, exhaust heat recovery devices, air conditioners, and the like.

Structure of Conventional Example 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 check valve 4a is installed between the heat exchanger 3 housed in the tank 2 and 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. It is connected by a return pipe 9, and is also connected to a liquid storage tank 7.
There is an on-off valve 10 between the upper part of the collector 1 and the upper part of the collector 1.
(valve mechanism) are connected through a communication pipe 11 provided with a valve mechanism. Hydraulic fluid 1 detected by liquid level detection means 6
The liquid level of the hydraulic fluid 12 is controlled by a controller 13 which opens the on-off valve 10 when the liquid level of the hydraulic fluid 12 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 through the communication pipe 11, and the pressure inside the collector 1 is reduced. Liquid reservoir tank 7
The working fluid 12 in the fluid reservoir tank 7 is collected into the collector 1 through the return pipe 9. Hydraulic fluid 1
When the liquid level of the hydraulic fluid 12 decreases and becomes smaller than the set value H, the control unit 13 closes the on-off valve 10 and the recovery 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 is generated. There was a problem that it could not be replaced. On the other hand, even when the on-off valve 10 is closed, the flow rate of the working fluid 12 in the heat exchanger 3 is reduced 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 quickly and a predetermined heat exchange performance could not be obtained.

Purpose of the invention The present invention solves the above-mentioned conventional problems.
By making the flow of the working fluid continuous and increasing the circulating flow rate, the temperature difference between the generator and the heat exchanger is reduced, and the heat exchange performance of the heat exchanger is improved, thereby improving heat transfer performance. The purpose is to

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 integrated. The upper part of the first valve mechanism and the second valve mechanism are arranged such that the tank is located above the generator, and the tank is opened and closed by contacting the valve seats of the first tank and the second tank, and is controlled by the liquid level detection means. The first
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 in the open state 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 first tank is in the generator. The working fluid is heat exchanged in the heat exchanger and the second
When the first valve mechanism is in the closed state, the working fluid that has been heat exchanged with the heat exchanger flows into the first tank, thereby reducing the amount of working fluid that flows into the generator and the heat exchanger. The flow becomes continuous.

DESCRIPTION OF EMBODIMENTS 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 pipe 16, and the liquid reservoir tank 7 further includes a first tank 17a and a second tank 17.
It is divided into b. The first valve mechanism 18a contacts the valve seats provided at the upper part of the first tank 17a and the second tank 17b, and is opened and closed by the first liquid level detection means 6a, and the second valve mechanism 18a is opened and closed by the second liquid level detection means 6b. The second valve mechanism 18b allows the gas introduction part 1 to
6, respectively. 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 at the upper part of the first tank 6a and the second tank 6b, and are connected in parallel with the heat exchanger 3 through a return pipe 8, and at the lower part of the first tank 6a and the second tank 6b. Check valves 4c and 4b are provided, and the collector 1 and the return pipe 9 are connected in parallel, and the gas introduction pipe 1
6 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 is forced into the heat exchanger through the outgoing pipe 5,
The working fluid inlet cooled by heat exchange with the hot water in the heat exchange tank 2 is sent to the first tank 17a through the return pipe 8. At this time, the first valve mechanism 18a is in a closed state and the second valve mechanism 18b is in an open state. 1st
The liquid level of the hydraulic fluid 12 in the tank 17a rises and when it reaches a predetermined height H, the first liquid level detection means 6a
As a result, the first valve mechanism 18 is pushed up to be in the open state, and the second valve mechanism 18b is pushed down by the valve controller 19 to be in the closed state. The collector 1 and the first tank 17a are communicated with each other, and the first tank 1
The hydraulic fluid 12 in 7a passes through the return pipe 9 to the collector 1.
The working fluid is cooled by heat exchange in the heat exchanger 3 and flows into the second tank 17b. The liquid level of the hydraulic fluid 12 in the second tank 17b 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 and becomes open, and the valve controller 19 by the first valve mechanism 18
a is pushed down and becomes a closed state, the working fluid 12 in the second tank 17b returns to the collector 1 through the return pipe 9, and the working fluid 12 cooled by heat exchange with the heat exchanger 3 returns to the first tank. 17a. Therefore, when the hydraulic fluid 12 flows into the first tank 17a, the hydraulic fluid 12 in the second tank 17b flows out, and conversely, the hydraulic fluid 12 flows into the second tank 17b.
2 flows in, 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 3 becomes continuous.Furthermore, since there is no resistance due to inertia, the working fluid 12 in the first tank 17a flows out. 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 in which the upper part of the liquid reservoir tank and the gas introduction part are integrally formed, which are divided into a first tank and a second tank each having a valve seat on the upper part. The upper parts of the first valve mechanism and the second valve mechanism are positioned above the generator, and are opened and closed by contacting the valve seats of the first tank and the second tank, and are controlled by the liquid level detection means. A valve controller is provided that contacts at both ends and rotates around the center as a fulcrum to alternately open and close the first and second valve mechanisms, allowing hydraulic fluid to alternately flow into the first and second tanks. Since the fluid can flow out, the flow of the working fluid 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 drawings]

Figure 1 is a system diagram of a conventional heat transfer device, Figure 2 is a system diagram of a conventional heat transfer device.
The figure 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...Liquid reservoir tank, 8...Return pipe, 9...Return 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.

Claims (1)

[Claims] 1 A generator in which a working fluid of a latent heat medium is sealed, a heat exchanger located below the generator, and a first heat exchanger located above the generator and each having a valve seat on its upper part.
A control tank is constructed in which an upper part of a liquid reservoir tank divided into a tank and a second tank and a gas introduction part are integrally configured, and the control tank is opened and closed by coming into contact with the valve seats of the first tank and the second tank. The first valve mechanism and the second valve mechanism, which are controlled by the liquid level detection means, contact the upper portions of the first valve mechanism and the second valve mechanism at both ends, and rotate about the center as a fulcrum. a valve controller that alternately opens and closes the valve mechanism and the second valve mechanism; an outgoing pipe that connects the generator and the heat exchanger; and a valve controller that connects the generator and the heat exchanger; a return pipe that connects the upper part in parallel, a return pipe that connects the generator and the lower parts of the first tank and the second tank in parallel, and a communication pipe that connects the upper part of the generator and the gas introduction part. A heat transfer device consisting of.