JPS5824754A - Anti-freezing measures of hot water supplier - Google Patents

Abstract

PURPOSE:To improve the durability and safety of the hot water supplier by a method wherein one end of a heat pipe wound together with a water pipe, to which said heat pipe is tightly adhered, on the outer surface of the inner shell of a heat exchanger is heated. CONSTITUTION:The heat pipe 10 is spirally wound on the outer surface of the inner shell 6 of the heat exchanger 2 together with the water pipe 7, to which the heat pipe 10 is tightly adhered, and an electric heater 11 is provided at one end of the pipe 10 and yet said one end of the pipe 10 and the heater 11 are located belw the bottom end of the inner shell 6. When the temperature of the water in the water pipe 7 attains to the temperature at which water freezes, the one end of the pipe 10 is heated by the heater 11. The heat is not only directly transferred to the pipe 10 but also transferred to the water pipe 7 in order to raise the temperature of the water pipe 7, resulting in the prevention of freezing. Furthermore, because the heater 11 can be provided at the ocation apart from the heat exchanger 2, the shortening of the service life of a combustion burner 3 owing to heat and the hazard of leakage of water owing to dewing can be reduced and in addition the mounting location of the heater 11 can also be chosen freely.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an antifreeze device that prevents a heat exchanger of a water heater from freezing.

BACKGROUND ART Conventionally, as an anti-freeze device for a water heater, a device in which a plurality of Tanabata are attached directly to a heat exchanger has been proposed. However, with such a device, there is a problem in that the heater becomes high in temperature during combustion in the burner, and the life of the vehicle is extremely shortened. There was also the risk that condensed water that formed in the heat exchanger would adhere to the heater and cause an electrical leak.

In view of the above points, an object of the present invention is to provide a freezing prevention device for a water heater that is excellent in durability and safety.

That is, the present invention is configured such that a heat pipe is wound tightly around the main pipe of the inner body of a heat exchanger, and one end of the heat pipe is heated by a heating device, and the heat exchanger is a heating device. It can be installed at any location (ζ) away from the ground, and can be raised to improve durability and safety.

An embodiment of this s#I4 will be described below based on the drawings.

In Figure 61, (1) is the exterior body of the water heater, and inside the exterior body (1) are a heat exchanger (2), a combustion burner (3), a water valve (4), a gas valve (& As shown in detail in Fig. 2, the cylindrical inner shell (6) with a rectangular cross section and the inner shell (
6), a water pipe (7) wound spirally on the outer surface, and an inner m
(6) Heat absorption fin section (8) attached to the upper end
The water pipe (7) has one end connected to the water valve (4)cζ and the other end passed through the heat absorption fin part (8) and connected to the hot water outlet pipe (9). There is.

Further, a heat vibrator is spirally wound around the outer surface of the inner shell (6) in close contact with the torpedo (1), and an electric heater as a heating device is attached to one end of the heat pipe oQ. (2) is installed. It should be noted that the heat pipe (
A) and electric heater (11 are not shown in Figure li1, but one end of the heat pipe QO and the electric heater (B) are located below the lower end of the inner m (41).

In the above configuration, when the outside temperature drops below 0℃, the water pipe (7
) Even if the water in the pipe reaches a freezing temperature, one end of the heat pipe (a) will be heated by the electric heater.

The heat from the heat pipe is transferred directly to the water pipe (7) through the heat pipe (6) and the heat absorbing fin part (8).
) A water pipe (
7), the temperature of the water pipe (n) rises and can prevent freezing. Also, the electric heater (b)
can be installed at a location away from the heat exchanger (2).

There is no risk of shortening the lifespan of the combustion burner (1) due to heat or electrical leakage due to condensation, and the installation position of the electric heater (b) can be selected arbitrarily, and there is no need to adjust conditions such as heat resistance. , there is a large degree of freedom in selecting a heater, and an inexpensive heater can be used.

In the above embodiment, an electric heater (b) was used as the heating device, but instead of a 1wt air heater (b), an 8wt burner (2wt) was used, for example, as shown in FIG. A similar effect can be obtained by using other heat sources, such as heating one end of the heat source using the flame of the heat source.

As explained above, according to the heating device for a water heater according to the present invention, one end of the heat pipe is heated by the heating device, and the water pipe is heated through the heat pipe, so that the heating device can be heated. It can be installed at any location away from the exchanger, so even if an electric heater is used as a heating device, there is no risk of shortened lifespan or aIIIC due to fog formation due to heat G from a single heat source during the heat exchanger. It has excellent durability and safety, and various heating devices other than electric heaters can be used as the heating device.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a water heater O showing one embodiment of the present invention;
The figure is a perspective view of essential parts showing one embodiment of the present invention. Figure @8 is a schematic perspective view of the r76 section in another embodiment. (2)...Heat exchanger, (6)-...Inner shell', (7)-
...Water pipe, (g)...Heat pipe, (2)...Electric heater (heating device ft), OJ...Pilot burner (heating device) Agent Yoshihiro Morimoto is shown in Figure δ.

Claims (1)

[Claims] 1. A hot water supply characterized in that a heat pipe is wound around the inner shell of the heat exchanger in close contact with the torpedo wound around the outer surface of the inner shell, and a heating device is provided for heating one end of the heat pipe. Antifreeze device for vessels.