JPS60129565A - heat transfer device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 Problems Conventionally, this type of heat transfer device has been structured 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,
The heat exchanger 3 housed therein and the collector 1 are connected by an outgoing pipe 5 having a check valve 4a in the middle. A liquid reservoir tank 7, in which a liquid level detection sensor 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 on the way. 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 10 (valve mechanism) in the middle. A controller 13 that opens the on-off valve 10 when the liquid level of the hydraulic fluid 12 detected by the liquid level detection sensor 6 becomes larger than a set value H.
The liquid level of the hydraulic fluid 12 is controlled by.

The working fluid 12 boils and evaporates when the collector 1 is heated by solar radiation, and the heated working fluid 12 passes through the outgoing pipe 5 and is pushed into the heat exchanger 3, which increases the pressure inside the collector 1. 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. To go. When the liquid level of the working fluid 12 detected by the liquid level detection sensor 6 becomes larger than the set value or the apparent value, the on-off valve 1O 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 connected to a communicating pipe. 11 , the pressure inside the collector 1 is guided to the fluid reservoir tank 7 , and the working fluid 12 in the fluid reservoir tank 7 is collected into the collector 1 through the ulna 9 . ! When the liquid level of the P uJ liquid 12 decreases and becomes smaller than the set value H, the on-off valve 1o is opened by the controller 13, and the recovery of the hydraulic fluid 12 to the collector 1 is completed. The working fluid 12 heated by sunlight in the collector 1 is heat-exchanged with the hot water in the heat exchange tank 2 in the heat exchanger 3, and the cooled working fluid 12 is led to the reservoir tank 7. Heat was transferred from the collector 1 to the heat exchange tank 2 by controlling the on-off valve 10 so that the liquid level was maintained at a set value H by the controller 13.

In this configuration, (1) when the on-off valve 10 is opened and the collector 1 and the liquid reservoir tank 7 are communicated with each other, the vapor of the high temperature working fluid 12 in the collector 1 flows into the liquid reservoir tank 7; The temperature of the working liquid 12 in the liquid storage tank 7 rises corresponding to the amount of heat of condensation, and the high temperature working liquid 12 is recovered to the collector 1. The heat collection temperature became high, reducing the heat collection efficiency. (2) Is the on-off valve 10 closed? When y, go 5. Heat exchanger 3. Since the working fluid 12 in the return pipe 8 has stopped and the heat exchanger 3 is not functioning as a heat exchanger,
In addition, even when the on-off valve 1O is in the closed state, the flow velocity of the working fluid 12 does not immediately increase K due to the resistance due to inertia, and the predetermined heat exchange capacity cannot be obtained, which causes the problem of deterioration of heat transfer performance. had.

Purpose of the present invention is to solve the above-mentioned conventional problems, and improves heat transfer performance by reducing the temperature difference between the generator and the heat exchanger and improving the heat exchange performance of the heat exchanger. The purpose is to promote the development of

Structure of the Invention In order to achieve the above object 1-1, the present invention provides a method for connecting a heat exchanger and a generator and providing a check valve between the heat exchanger and the check valve in the outgoing pipe. The part and the lower part of the liquid reservoir tank are connected by an ulna with a check valve in the middle, and the return pipe and the generator are connected by a remains with a check valve in the middle.

With this configuration, the liquid passes through the heat exchanger in the storage tank, exchanges heat, becomes low temperature, and is recovered by the generator, so the generator temperature decreases and the temperature difference with the heat exchanger is reduced. Also, when the valve mechanism on the communication pipe is open, the working fluid in the liquid reservoir tank goes to the heat exchanger, and when the valve mechanism is closed, the working fluid in the generator goes to the heat exchanger. Since the heat exchanger always functions as a heat exchanger and there is no resistance due to inertia, the flow rate of the working fluid in the heat exchanger increases, thereby improving heat transfer performance.

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.

A sag tank 14 installed above the collector 1 (generator) consisting of a plurality of heat collecting pipes is connected to the upper part of the collector 1 by piping, and is placed below the collector 1, and inside a heat exchange tank 2 that stores hot water. The heat exchanger 3 and the lower part of the sub-tank 14 are connected by an outgoing pipe 5 having a check valve 4a in the middle. A liquid reservoir tank 7 in which a liquid level detection sensor 6 is housed is arranged above the collector 1, and is connected to the heat exchanger 3 by a return pipe 8 having a check valve 4c in the middle, and also connected to the sub tank 1.
It is connected to the upper part of 4 by a communication pipe 11 in which an on-off valve 10 (valve mechanism) is provided. Heat exchanger 3 and check valve 4a
A check valve 4 is installed between the outgoing pipe 5 and the lower part of the liquid reservoir tank 7.
b is provided and connected at the ulna 9, the heat exchanger 3 and the check valve 4c
The return pipe 8 between them and the lower part of the generator 12 are connected through a remains 15 with a check valve 4b provided in the middle. At this time, the same effect can be obtained even if the ulna 9 is connected to the return tube 8 and the remains 15 is connected to the return tube 5. When the liquid level of the hydraulic fluid 12 detected by the liquid level detection sensor 6 becomes larger than the set value H, the on-off valve 1O
The liquid level of the hydraulic fluid 12 is controlled by a controller 13 that closes the hydraulic fluid 12 .

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 sag 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 to the heat exchanger 3, and the cooled working fluid 12 exchanges heat with the hot water in the heat exchange tank 2 and passes through the returning pipe 8 to the liquid storage tank. 7, and the level of the working fluid 12 in the fluid reservoir tank 7 gradually rises. When the liquid level of the hydraulic fluid 12 detected by the liquid level detection sensor 6 becomes larger than the set value H, the on-off valve 10 is opened by the controller 13, and the upper part of the sub-tank 14 and the upper part of the liquid reservoir tank 7 are connected to the communicating pipe 11. The pressure inside the sub-tank 14 is led to the liquid storage tank 7, and the vapor of the working liquid 12 in the upper part of the sub-tank 14 is sent to the e-storage tank 7, where it is cooled and condensed, and the heat of condensation is The temperature of the working fluid 12 in the fluid reservoir tank 7 is increased corresponding to
2 is sent to the heat exchanger 3 through the ulna 9 and part of the outgoing pipe 5, cooled by exchanging heat with hot water, and sent to the lower part of the collector 1 through part of the returning pipe 8 and the remains 15, Collected by collector 1. When the liquid level of the hydraulic fluid 12 in the liquid reservoir tank 7 decreases and becomes smaller than the set value H, the controller 13 closes the on-off valve 10.
is made into a closed window, and the collection of the working fluid 12 to the collector 1 is completed.

In this manner, in the above embodiment, when the working fluid 12 is recovered from the control tank 7 to the collector 1, the working fluid 1i heated by the heat of condensation of the steam of the working fluid 12 is heat exchanged with hot water in the heat exchanger 3. Since the heat is collected in the collector 1 after being cooled and cooled, the heat collection temperature of the collector 1 is lowered and the heat collection efficiency is improved. The working fluid 12 passes through the heat exchanger 3
always functions as a heat exchanger and there is no resistance due to inertia, so the flow rate of the working fluid 12 in the heat exchanger 3 is increased, the heat exchange capacity is increased, and the heat transfer performance and heat collection efficiency are improved.

9] The heat transfer device of the non-explosion EJ1 connects the heat exchanger and the generator, and the part between the DjJ recording heat exchanger and the check valve of the outgoing pipe, which is provided with a check valve in the middle. , the lower part of the liquid reservoir tank is connected by an ulna with a check valve in the middle, and the recovery pipe and the generator are connected by a remains with a check valve in the middle, so (1) ) The working fluid in the liquid storage tank undergoes heat exchange in the heat exchanger, becomes low temperature, and is recovered by the generator, and the temperature difference between the generator and the heat exchanger becomes small, making it possible to transfer heat with a low temperature difference.

(2) When the working fluid is recovered from the liquid storage tank to the generator, the working fluid exchanges heat in the heat exchanger, and there is no decrease in the flow rate of the working fluid due to intermittent operation, so the heat exchange capacity can be increased.

[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, 2... Heat exchange tank,
3...Heat exchanger, 4a14b, 4c, 4d,...
...Check valve, 5...Outbound pipe, 6...
・Liquid level detection sensor, 7...Liquid reservoir tank, 8
... Reversion, 9 ... Ulna, 10 ...
...Valve mechanism, 11...Communication pipe, 12...
- Hydraulic fluid, 15... Remains. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 10 Figure 2 3

Claims (1)

[Claims] (1) A generator that is sealed with a working fluid and generates its steam, a heat exchanger installed in a heat exchange tank located below the generator, and a liquid level inside the generator that is located above the generator. A liquid reservoir tank housing a detection sensor, an outgoing pipe connecting the generator and the heat exchanger and having a check valve in the middle, and a returning pipe connecting the heat exchanger and the liquid reservoir tank. A communication pipe that connects the upper part of the generator and the upper part of the liquid storage tank and is provided with a valve mechanism in the middle that is controlled by the liquid level detection sensor, and the communication pipe between the heat exchanger and the check valve. A heat transfer device consisting of an ulna which connects a tube and the lower part of the liquid reservoir tank and has a check valve in the middle, and a remains which connects the generator such as an If storage tube and has a check valve in the middle. Conveyance device.