JPS62284128A - Hot water circulating device - Google Patents

Abstract

PURPOSE:To reduce the number of times to replenish the circulating water and increase the amount of circulating water per unit time by installing a first hot water boiler and a second hot water boiler being heated by a burner simultaneously to an intermediate position of a circulating pipe which is connected to a radiator and open tank and providing this circulation pipe with a second closing valve and closing the second valve when the first closing valve is opened. CONSTITUTION:When a burner 6 is ignited with a first closing valve 5 closed and a second closing valve 8 opened, the steam presses down the water face of a first hot water boiler 2 to send out the hot water. This hot water is cooled in a radiator 3 and returned to an open tank 1 through a second hot water boiler 7 and a closing valve 8. When the hot water boiler 2 is empty and the open tank 1 is filled, the closing valve 5 is opened and closing valve 8 is closed. The steam developed in a hot water boiler 7 pressed down the water face of the can 7, and supplies, in the reverse direction, cold water from the side of radiator 3 directly to the hot water boiler 2, cooling the inside of the hot water boiler and drawing the water in the open tank 1. This water flows into the hot water boiler 2 via the closing valve 5. After a certain time has passed, the hot water again heated in the hot water boiler 2 is sent out to the radiator 3.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] This invention is a hot water circulation system that uses steam pressure to supply hot water heated by a burner to a radiator without using a circulation pump. It is related to the device.

[Conventional technology]

Conventionally, to circulate hot water heated in a water boiler to a radiator, a circulation bong 1 is generally used to force the circulation.
The system shown in FIG. 3 is known as a hot water circulation device that uses steam pressure.

This circulation system connects an open tank A, a water boiler B installed at a lower position than the open tank A, and a radiator C through a water channel, and installs an on-off valve in the water channel between the open tank A and the water boiler B. A water level detector E is attached to an open tank A or a water boiler B. When water is poured into the water boiler B and heated, the on-off valve is closed, so the steam pressure sends the hot water from the water boiler B to the radiator C, and the cooled water is returned to the open tank A. Water boiler B runs out or tank A is open
When the water level increases, the on-off valve is opened in response to a signal from the water level detector E to release the pressure in the water boiler B, and the water in the open tank A is allowed to flow into the water boiler B to repeat the above cycle again. Hot water heating is possible without using it.

By the way, in the above system shown in Utility Model Publication No. 57-53929, the on-off valve forms a flow path for releasing the pressure from water boiler B, and also serves as a flow path for water from open tank A to flow into water boiler B, so that the pressure is balanced. When this occurs, immediately open tank A.
Water does not flow to water boiler B, causing a problem where it cannot be circulated.

In order to prevent this drawback, a pressure release valve F is attached to the top of the water boiler B in addition to the on-off valve, and the flow path for releasing the pressure from the water boiler B and the flow path for the water in the open tank A to flow into the water boiler B are separated by a metal [ A structure was proposed to ensure reliable hot water circulation.

[Problem that the invention seeks to solve]

By the way, when the pressure release valve Fi of the water boiler B is opened, the pressure of the water boiler B becomes atmospheric pressure, and the water in the open tank A enters the water boiler B at the differential pressure, so it takes a while for all the food to be consumed, and then the hot water is circulated again. If it takes a long time for the pressure to rise as much as possible, the circulation flow rate per certain period of time is small, and the water vapor released from the pressure release valve F is difficult to recover, so it is necessary to constantly replenish the circulating water. .

[Means for solving problems]

Since the configuration used for a pressure relief valve has problems in terms of circulation flow rate and water vapor recovery, the present invention solves the above problems with a system that does not use a pressure relief valve.

In other words, 1 is an open tank, 2 is a water boiler installed at a position υ lower than the open tank 1, and 3 is a radiator to which hot water obtained from the water heater 2 is supplied, and the open tank 1, radiator 3, and open tank 1 are The circulation pipe 4 constitutes a closed channel. 5 is open tank 1
6 is a burner that heats the water boiler 2. When the water boiler 2 is heated by the burner 6 and the on-off valve 5 is closed, there is no way for the generated water vapor to escape and the water vapor can escape. Heat radiator 3 that heats the water surface and releases hot water
send to. The water cooled by the radiator 3 is returned to the on-off tank 1, and then when the on-off valve 5 is opened, the pressure in the water boiler 2 is released and water is replenished from the open tank 1 to the water boiler 2, forming a circulating water cycle. be done.

is formed.

A second water boiler 7 is heated at the same time by the burner 6 that heats the water boiler 2, and is installed in the middle of the circulation pipe 4 that communicates with the radiator 3 and the open tank le. 8 is the second water boiler 7.
A second pipe attached to the circulation pipe 4 communicating with the open tank 1
The on-off valve 9 is a water level detector attached to the open tank 1.

[Explanation of action]

Although the on-off valve 5 and the second on-off valve 8 operate in reverse, when water is supplied to the water boiler 2 prior to use, both the on-off valve 5 and the second on-off valve 9 are opened. When water is poured into the open tank 1, the water is supplied to the water boiler 2 via the on-off valve 5, and the desirable amount of water to be poured is the amount of water that fills the water boiler 2, radiator 3, and second water boiler 7, including the circulation pipe 4. .

When the burner 6 is ignited by closing the on-off valve 5 and opening the second on-off valve 8, the water boiler 2 is heated, and the generated water vapor pressurizes the water surface of the water boiler 2 and sends hot water to the radiator 3. The motion in which the water cooled by the radiator 3 is returned to the open tank 1 via the second water boiler 7 and the second on-off valve 8 is the same as in the conventional product.

Next, since the positional relationship is such that when the water boiler 2 becomes empty, the open tank 1 becomes full, the water level detector 9 detects when the open tank 1 becomes full, and the opening/closing valve is opened. 5 is open. When the second on-off valve 7 is closed, the pressure in the water boiler 2 is released to the open tank 1 via the on-off valve 5'jt.

By the way, if you just open the on-off valve 5, the water boiler 1 will always be heated, so it will generate steam and have a positive pressure, and the water boiler 2 will also be connected to the radiator 3 on the on-off valve 5 side, which communicates with the outside air.
Water pressure is applied to both sides. Furthermore, since the generated water vapor is absorbed by the water in the radiator 3 and the closed tank 1, the stability is likely to be disturbed and the water in the open tank 1 may not be able to flow into the water boiler 2.

In this invention, the second on-off valve 7 is closed in conjunction with the on-off valve 5, so the burner 6 heats the second water boiler 7 as well as the water boiler 2, as shown in FIG.

Since the second on-off valve 8 of the second water boiler 7 is closed, the generated water vapor pressurizes the water surface of the second water boiler 7, and conversely, cold water is directly supplied to the water boiler 2 from the radiator 3 side. For this reason, the inside of the water heater 2 is cooled by this water, and the water vapor inside the water heater 2 is also cooled to reduce its vapor pressure, so the water in the open tank 1 is sucked and flows into the water heater 2 via the on-off valve 5, and further kettle,
2, the entire amount of water vapor in the water boiler 2 was liquefied and the water boiler 2 was filled with water.

Therefore, after a certain period of time has elapsed since the empty capacity of the open tank 1 has been detected or the on-off valve 5 has been opened, if the on-off valve 5 is closed and the second on-off valve 5 is opened, the hot water heated in the water boiler 2 is sent to the radiator 3 again. .

[Explanation of effects]

As described above, in this invention, the cold water returned from the radiator 3 to the open tank 1 is returned to the open tank 1 via the second water boiler 7 and the second on-off valve 8, so if the on-off valve 5 is closed, Like the conventional product, hot water from the water boiler 2 can be supplied to the radiator 3 without using a circulation pump, and the cooled water is preheated in the second water boiler 7.

In addition, when the hot water in the water boiler 2 is sent to the radiator 3, if the on-off valve 5 is opened and the second on-off valve 8 is closed, the water boiler 2
The water vapor generated in the open tank 1 escapes from the on-off valve 5 to the open tank 1, but since the water volume in the open tank 1 is almost full, most of it is absorbed by the water in the open tank 1, and the amount of water vapor lost is very small. Reeds, the number of refills of circulating water has decreased.

Furthermore, if the cold water is returned to the water boiler 2 by heating the second water boiler 7, the water vapor in the water heater 2 will be absorbed by the cold water, and the water heater 2 will become negative pressure, sucking a large amount of water from the open tank 1, so that the water boiler 2 can be opened. The filling of water from the tank 1 to the water boiler 2 can be completed in an extremely short time, and the water in the open tank 1 is preheated in the second water boiler 7 until hot water starts circulating again after the on-off valve 5 is opened. The heating capacity is improved by reducing the time required and increasing the circulating flow rate per certain period of time.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views of the product of the present invention, and FIG. 3 is an explanatory view of a conventional example. 1...Open tank 2...Kettle can 3.
...Radiator 4...Circulation pipe 5...
...Opening/closing valve 6...Burner 7...
・Second water boiler 8...Second on-off valve:! ? 1
Spear 2 Mouthwitness 3

Claims (1)

[Claims] An open tank 1, a water boiler 2 provided at a lower position than the open tank 1, and a radiator 3 to which hot water from the water heater 2 is supplied are provided, and the open tank 1, the water boiler 2, the radiator 3, and the open tank 1 are connected to a circulating pipe. An on-off valve 5 is attached to the circulation pipe 4' which communicates with the open tank 1 and the water boiler 2, and when the on-off valve 5 is closed, hot water from the water boiler 2 is sent under pressure to the radiator 3, and when the on-off valve 5 is open, the open tank is connected to the open tank. In the circulation device for supplying the water of water boiler 1 to the water boiler 2, a second water boiler 7 that simultaneously heats the water boiler 2 with the burner 6 is installed in the middle of the circulation pipe 4'' that communicates the radiator 3 and the open tank 1, A hot water circulation device in which a second on-off valve 8 is attached to a circulation pipe 4'' that communicates the second water boiler 7 and the open tank 1, and the second on-off valve 8 is closed when the on-off valve 5 is open.