JPH0142751Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field and purpose of the invention) The present invention relates to a horizontal combustion type bathtub, which does not generate local heating or boiling noise and has good heat transfer efficiency. The purpose is to provide.

(Embodiments of the invention) The horizontal combustion type bathtub of the invention (hereinafter referred to as the bathtub of the invention) will be described below with reference to the embodiments shown in the drawings.

1 and 2 show a bathtub according to the present invention, which has a burner 1 located in a combustion chamber 2 facing slightly downward.

Further, an upper water chamber 5a (formed surrounded by a water chamber main body 6a) is located in the upper part of the combustion chamber 2, and a lower water chamber 5b (formed surrounded by a water chamber main body 6b) is located in the lower part of the combustion chamber 2.
are provided in such a way that they each protrude.

The upper water chamber 5a has an inclined surface S rising toward the base on the outer surface of the overhang.

Furthermore, the upper water chamber 5a has an inclined surface T that reduces the cross section of the combustion chamber 2 in the downstream direction on the downstream inner surface of the burner 1.

On the other hand, the lower water chamber 5b does not have a slope corresponding to the slope S, but has a slope T similar to the slope.

Next, at the downstream of the inclined surface T, the upper water chamber 5a
A heat transfer tube 10 with fins 11 is provided between the lower water chamber 5b and the lower water chamber 5b by connecting them.

Further, an upper circulation pipe 13 is provided protruding from the side of the upper water chamber 5a at a position away from the heat transfer pipe 10.

On the other hand, a lower circulation pipe 14 is provided protruding from the side of the lower water chamber 5b.

The above upper circulation pipe and lower circulation pipe 14 will be connected to the bathtub 18.

On the other hand, an exhaust path 16 is provided downstream of the heat transfer tube 10 to allow exhaust gas to be discharged.

Furthermore, a fan 17 is provided, and the fan 17 performs forced air supply and exhaust to enable horizontal combustion.

The operation of the bathtub of the present invention shown in the above embodiments will now be described.

That is, the fan 17 is driven and the burner 1 is ignited.

Since the burner 1 is directed slightly downward, its flame does not excessively heat the water chamber main body 6a of the upper water chamber 5a.

On the other hand, high temperature exhaust gas is transferred from the combustion chamber 2 to the heat transfer tube 10.
to the exhaust passage 16 along the outer surface of the air.

Here, since the cross section of the combustion chamber 2 is reduced in the downstream direction due to the inclined surface T, the flow velocity of the exhaust gas increases, and heat is efficiently transferred to the water in the tube in the heat exchanger tube 10.

The hot water heated in the heat transfer tube 10 is transferred to the upper water chamber 5.
flows to a.

However, in the upper water chamber 5a, since the upper circulation pipe 13 is positioned away from the heat transfer tube 10, the hot water whose temperature has risen rapidly in the heat transfer tube 10 is slightly lowered in temperature in the upper water chamber 5a, and then returns to the upper circulation pipe 13. It will flow to.

Therefore, hot water flows smoothly through the upper water chamber 5a without causing local heating, boiling noise, etc.

On the other hand, the inclined surface S smoothes the flow of hot water within the overhanging portion and similarly prevents local heating, boiling noise, etc.

As a result of the above, the water in the bathtub 18 circulates through the lower circulation pipe 14, the lower water chamber 5b, the heat transfer tube 10, the upper water chamber 5a, and the upper circulation pipe 13 in that order and is heated.

(Effects of the invention) The embodiments of the horizontal combustion type bath pot of the invention are as described above, and the effects thereof are listed below.

(1) The bathtub of the present invention has the structure described in the claims for utility model registration, and in particular, the upper circulation pipe is positioned away from the heat exchanger tube in the upper water chamber, so the temperature of the hot water rises rapidly in the heat exchanger tube. The temperature is slightly lowered in the upper water chamber, and as a result, local heating, boiling noise, etc. do not occur.

(2) The bathtub of the present invention has the same configuration as above, and in particular, both the upper water chamber and the lower water chamber have sloped surfaces that reduce the cross section of the combustion chamber in the downstream direction on the downstream inner surface of the burner, increasing the flow velocity of exhaust gas. and has good heat transfer efficiency.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional side view of the bath pot of the present invention, and Figure 2 is the front of the can body of the same bath pot (as seen from the fan side).
figure. 1...burner, 2...combustion chamber, 3...can body,
5a... Upper water chamber, 5b... Lower water chamber, 6a...
Water chamber main body, 6b... Water chamber main body, 10... Heat exchanger tube,
11...Fin, 13...Upper circulation pipe, 14...Lower circulation pipe, 16...Exhaust passage, 17...Fan, 18
...bathtub.

Claims (1)

[Scope of utility model registration request] A burner is provided slightly downward in the combustion chamber, an inclined surface is provided extending over the upper part of the combustion chamber and rises toward the base on the outer surface of the overhang, and an inclined surface reduces the cross section of the combustion chamber in the downstream direction on the downstream inner surface of the burner. an upper water chamber having a surface, a lower water chamber having an inclined surface extending from the lower part of the combustion chamber and reducing the cross section of the combustion chamber in the downstream direction on the downstream inner surface of the burner, and downstream of the inclined surface reducing the cross section. , a heat transfer tube with fins provided between the upper water chamber and the lower water chamber to connect them, an upper circulation pipe protruding to the side at a position away from the heat transfer tube of the upper water chamber, and a lower water chamber. A horizontal combustion type bathtub consisting of a lower circulation pipe protruding from the side of the chamber, an exhaust path provided downstream of the heat transfer tube, and a forced air supply/exhaust fan.