JPS5832109Y2 - Onsen boiler - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a hot water boiler.

In general hot water boilers, when connected directly to the water supply, a pressure reducing check valve or safety valve is often connected.

A pressure reducing check valve generally includes a check valve and a vacuum breaker.

This vacuum breaker device prevents the pressure reducing check valve from becoming a vacuum by communicating with the atmosphere when the pressure reducing check valve becomes negative, but at this time, water leaks from the vacuum breaker device. It often dripped and flooded the area where it was installed.

The present invention provides a compact hot water boiler that can reliably process the drain from such a vacuum breaking device.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the figure, 1 is a combustion chamber in which a burner 2 is arranged, 3
5 is a hot water storage type heat exchanger for hot water supply that penetrates the exhaust passage 4 from the combustion chamber 1 in the central longitudinal direction, 5 is an air supply passage to the combustion chamber 1, and 6 is a forced air supply provided in the middle of the exhaust passage 4. The exhaust fan motor 7 is a bypass circuit that short-circuits the air supply path 5 and the suction side of the fan motor 6 of the exhaust path 4. By short-circuiting and flowing a part of the air supply to the exhaust side, combustion is achieved. This is intended to stabilize the air supply to the chamber 1 and lower the exhaust temperature.

Reference numeral 8 denotes a spiral heating heat exchanger installed in the hot water supply heat exchanger 3, and the heating circuit 9 consisting of an outgoing path 9a to the radiator connected to this and an incoming path 9b from the radiator includes a circulating circuit. A pump 10, an air separator 11, etc. are provided.

Reference numeral 12 indicates a water supply pipe for supplying water to the heating circuit 9, and a water supply channel 1 having a pressure reducing check valve 13 in the upper side thereof is provided on the upper side thereof.
4 is connected to the ball tap 15, a water supply channel 16 to the heating circuit 9 is located at the bottom, and an overflow channel 1 is located at the center of the side.
7 are provided respectively.

Reference numerals 18 and 19 denote a water supply waterway branched from between the pressure reducing check valve 13 and the ball tap 15 of the water supply waterway 14 to the hot water supply heat exchanger 3, and a hot water escape route from the heat exchanger 3 as well. The escape path 19 leads its tip to the distern 12 and has a safety valve 20 in the middle.

21 is an air vent passage of the heating circuit 9, and 22 is a hot water supply passage led out from the top of the hot water supply heat exchanger 3.

The various combustion, heat exchange, and water supply equipment described above are housed within the exterior body 23.

Also, among them, water supply channel 14. Hot water supply path 22. Supply and exhaust passage 5,
4 protrudes from the upper part of the exterior body 23, and the overflow channel 1
7. Reciprocating passages 9a, 9b and fuel passage 23' of burner 2
are connection holes 24.25.2 formed on the lower surface of the exterior body 23.
It is facing 6.27.

Note that 28 is a drain channel of the hot water supply heat exchanger 3 connected to the overflow channel 17 via a drain valve 29.

Further, the pressure reducing check valve 13 is provided with a check valve (not shown) and a vacuum breaking device (not shown), and the drain from the vacuum breaking device is passed through a pipe 30 to the distern 1.
2, and this pipe 30 is provided close to the safety valve 20 as shown.

In the above configuration, when water is supplied via the water supply channel 14, first the heating circuit 9 is supplied with the distern 12 and the water supply channel 1.
Water is sent at 6.

Then, when the water supply is finished, the ball tap 15 is closed, and the distern 12 is maintained at a constant water level.

Further, water is directly supplied to the hot water supply heat exchanger 3 via a water supply channel 18 branched from the water supply channel 14 .

Further, if air is mixed in the heating circuit 9, it is separated by the air separator 11 and escapes to the air vent passage 21, and the expanded portion of the heating hot water also flows to the gas station 12 via the air vent passage 21.

On the other hand, even when the pressure inside the hot water supply heat exchanger 3 becomes higher than a predetermined value, the safety valve 20 opens and hot water flows into the gas station 12 via the escape path 19.

As described above, in this invention, the drain from the vacuum breaking device of the pressure reducing check valve installed in the middle of the water supply route to the cistern is guided to the cistern through a pipe, so there is no possibility that the part where the exterior body is installed will become flooded with water. In addition, this pipe, the cistern, the heating heat exchanger, the hot water supply heat exchanger, and the safety valve interposed in the hot water relief passage connected from the hot water supply heat exchanger to the cistern are installed at least inside the exterior. Since the pipes are installed in will no longer occur.

[Brief explanation of drawings]

The figure is a sectional view of a hot water boiler showing an embodiment of the present invention. 2... Burner, 3... Heat exchanger for hot water supply, 8... Heat exchanger for heating, 12... Distarne, 13...・Pressure reducing check valve, 30...
··pipe.

Claims (1)

[Scope of utility model registration request] A hot water heat exchanger heated by a burner, a heating heat exchanger heated by hot water in this hot water heat exchanger, and the heating heat exchanger, circulation pump, and air separator connected in the middle. It is equipped with a distern for supplying water to the heating circuit, and a pressure reducing check valve provided in the middle of the water supply route to this distern and having a check valve and a vacuum breaking device, and a drain from the vacuum breaking device of the pressure reducing check valve is provided. A pipe leading to the above-mentioned distern is provided, and a hot water relief path is connected from the above-mentioned hot water heat exchanger to the above-mentioned distern via a safety valve, and a pressure reducing check valve is connected to the above-mentioned hot water supply heat exchanger, heating heat exchanger, distern, and above-mentioned distern. The pipe and safety valve are at least a hot water boiler installed inside the exterior body.