JPS5815800Y2 - Onsen boiler - Google Patents

Description

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

Generally, in a boiler having a hot water storage tank for supplying hot water, a pressure reducing check valve and a safety valve are often arranged in order to connect the boiler directly to the water supply.

In general, when water is heated to become hot water, its specific volume increases, so the amount of expansion is discharged from the safety valve, and the amount of heat is wasted.

Focusing on the fact that this amount of expansion corresponds to hot water, without wasting the thermal energy corresponding to the expansion amount, the above amount of expansion is applied to the water supply cylinder of the heating heat exchanger circuit installed in the hot water storage tank. The purpose of this invention is to guide and utilize this distern for heat retention.

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, I, 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, and short-circuits a part of the air supply 52 to the exhaust side, thereby reducing the combustion chamber. This is to stabilize the air supply to the exhaust gas and reduce 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 at the upper part thereof on the g4U side there is a ball tap 15 to which a water supply channel 14 having a pressure reducing check valve 1.3 is connected in the middle, and at the lower part there is a water supply pipe 15 for supplying water to the heating circuit 9. A water supply channel 16 is provided, and an overflow channel 17 is provided at the center of the side.

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, the water supply channel 14, the hot water supply channel 22, the supply and exhaust channels 5, 4
protrudes outside the exterior body 23, and further includes an overflow channel 17,
The reciprocating paths 9a, 9b and the fuel path 23' of the burner 2 are as follows:
Connection holes 24 , 2526 . formed on the lower surface of the exterior body 23 .
It is facing 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 drain from the vacuum breaking device is guided to the distern 12 through a pipe 30. ing.

Of course, instead of leading to the distern 12, draining can also be conducted effectively by leading to the overflow channel 17.

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

When the water supply is finished, the pole tap 15 is closed.
The distern 12 is kept 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 .

Furthermore, 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, 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 distiller 12 via the relief path 19.

Now, the set pressure of the pressure reducing check valve 13 is 0.6 Ktg/ci, and the volume of the hot water storage tank, that is, the heat exchanger 3 is approximately 1
OO2, the blowing pressure of the safety valve 20 is 0°9 Kg/C
14, the water supply temperature is 20℃, the boiling temperature is 9
If the temperature is 0°C, approximately 3°C of water will come out from the safety valve 20.

This 3t of hot water has the same temperature as the boiling temperature, so
Every time the boiler heats up, it is guided to DiStern 12,
This means that the distern 12 is constantly warmed, and heat can be used effectively.

Since the heating heat exchanger is a small-capacity spiral type, the total capacity of the entire heating circuit is approximately 1Ot.
Since the expansion of the heating circuit 9 is as small as 0°3, it is unlikely that the heat capacity will be sufficient to keep the heat exchanger 12 warm. The water supply channel that supplies cold water to the hot water supply heat exchanger is separated from the cold water supply channel by a pole tap, and the water supply channel that supplies cold water to the hot water supply heat exchanger is supplied to the hot water supply heat exchanger through a safety valve. The expansion of hot water from the exchanger can be effectively used for heating purposes, thereby saving energy, and also preventing heating water from mixing with hot water supply water and making it unclean.

In other words, the amount of water used for hot water supply is large enough to supply hot water to a bath, for example, and the expanded water is also large, and it would be a waste to drain this water. If the water is supplied as heating water to the heating circuit via the cistern, heat can be effectively utilized and a large amount of energy can be saved.

Furthermore, since the gas station, water supply channel, and hot water heat exchanger are separated by pole taps and safety valves, heating water never mixes with the hot water supply water, making it extremely clean.

To explain the point that the expanded water for hot water supply is supplied to the heating circuit, it is true that the heat exchanger for hot water supply and the heating circuit are filled with hot water when hot water supply and space heating are being performed. The heating is turned on and off as needed, and when it is turned off, the temperature of the hot water drops to an extremely low temperature, causing its volume to contract significantly, and water to be replenished from the gas station.

At this time, since high-temperature expanded water generated by turning on and off the hot water supply heat exchanger is constantly supplied to the distiller, this warm water is supplied to replenish the heating circuit.

[Brief explanation of drawings]

The figure is a sectional view showing a hot water boiler in an embodiment of the present invention. 2...burner, 3...heat exchanger for hot water supply, 6...heat exchanger for heating, 12...distern, 19...・Escape route, 20...Safety valve.

Claims (1)

[Scope of utility model registration request] A hot water supply heat exchanger heated by a burner, a heating heat exchanger heated by the hot water of the hot water supply heat exchanger, and a circulation pump and an air separator connected to the heating heat exchanger. It is equipped with a heating circuit, a distern for supplying water to the heating circuit, and a water supply channel for supplying cold water to the distern and the hot water supply heat exchanger, and the distern and the water supply channel are separated by a ball tap, and the heat exchanger for hot water supply is separated by a ball tap. 1. A hot water boiler characterized by being provided with a safety valve communicating with the exchanger and supplying the expansion of hot water in the hot water supply heat exchanger to the above-mentioned distiller.