JPS58133549A - Bath - Google Patents

Abstract

PURPOSE:To make it possible to prevent the radiation of heat of hot water stored in a bathtub by a method wherein a changeover cook for preventing the reverse flow of the hot water is attached to at least one of a sucking pipe and an exhaust pipe for establishing communication between the bathtub and an outdoor boiler. CONSTITUTION:The indoor side bathtub 1 and the outdoor boiler 2 are made to communicate with each other through the sucking pipe 3 and the exhaust pipe 4 and the changeover cock 7 for preventing the reverse flow of the hot water is attached to at least one of the pipe 3 and 4 in such a manner that the changeover cock 7 is attached through a link rod 6 to one end of a rotary gas cock handle 5 adopted to control the combusition of the outer boiler 2. That is, when the handle 5 is held at a combustion position, the cook 7 is opened to thereby open the exhaust pipe 4 while when the handle 5 is held at a non-combustion position, the cock 7 is closed to thereby close the exhaust pipe 4. Accordingly, once the hot water is obtained, the exhaust pipe 4 may be closed by operating the handle 5 so that the hot water in the bathtub 1 does not flow into the outdoor boiler 2 and therefore, the radiation of the hot water in the outdoor boiler 2 is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bath in which a bathtub and an outer case are communicated through a suction pipe and a discharge pipe, and prevents heat radiation of hot water stored in the bathtub.

In conventional baths, after combustion has stopped, the outer pot and the suction and discharge pipes are cooled by the outside air (particularly in winter), causing hot water to flow back into the bathtub from the discharge pipe to the suction pipe. It was found that there is a drawback that natural circulation occurs and heat is dissipated in the outer pot, causing the temperature of the water to drop.

The present invention was made in view of this background, and the following is the first part.
The present invention will be explained with reference to the figures and the drawings in FIG.

In the figure, (1) is a bathtub installed indoors, (2)
(3) is the suction pipe that sucks hot water from the bathtub (1) and sends it to the outside≦(2); (4) is the outside≦(2)
This is a discharge pipe that discharges hot water into bath m(1). (5) is a rotatable gas cock handle that is installed so that one part is exposed on the indoor side and controls the combustion of the outer pot (2), and the opening/closing valve (7) is connected to the end of the handle via an interlocking rod (6). installed. The opening/closing valve (7) opens the discharge pipe (4) when the gas cock handle (5) is in the combustion position as shown by the chain line in Figure 2, and closes the discharge pipe (4) as shown by the solid line in Figure 2 when the combustion is stopped. It opens and closes like this.

In such a bath, when the gas cock is opened to boil water, the discharge pipe (4) is open, so natural circulation between the outer pot (2) and the bathtub (1) continues as before, and the water is boiled. After that,
When the gas cock is closed and the discharge pipe (4) is closed, the bathtub (1)
) does not flow into the outer pot (2), so heat radiation in the outer pot (21) is prevented.

Figures 3 and 14 show another embodiment of the present invention, in which the stopcock (7) is fixed at the back of the discharge pipe (4) and is attached to the tip of an elastic body (8) that extends at high temperatures and contracts at low temperatures. It is being In such a bath, when the outer pot (2) is brought into a combustion state, the heated hot water flows through the discharge pipe (4), and the expandable body (8) receives heat and expands to open and close the tap (71 is the discharge pipe (4)). Hot water can flow into the bathtub (11) away from the open end, and the hot water naturally circulates between the outer pot (2) and the bathtub (1).Also, when the combustion of the outer pot (2) is stopped and the outer pot (II&ρ) is cooled, The temperature of the water in the discharge pipe (4) also decreases, causing the expansion and contraction valve to shrink and open/close valve (71 is the discharge pipe (4)
The open end of the bathtub (1) is closed to prevent hot water in the bathtub (1) from flowing into the outer pot (2). In addition, in the figure, (9) is an air vent hole drilled in the opening/closing valve (7).

As described above, the bathtub of the present invention is characterized in that at least one of the suction pipe and the discharge pipe is provided with an opening/closing valve for preventing hot water from flowing back from the bathtub to the outer pot. heat radiation was prevented.

[Brief explanation of the drawing]

1 and 2 show embodiments of the present invention.
The figure is a sectional view of the bath, and FIG. 2 is a perspective view of the bath. FIG. 3 is a sectional view of a bath showing another embodiment of the present invention, and FIG. 4 is an enlarged view of the same essential parts. Patent applicant Matsushita Electric Works Co., Ltd. Patent attorney Toshimaru Takemoto (and 2 others) Figure 1 Figure 2 rt Figure 13 Figure 4

Claims (1)

[Claims] (11) In a bath where the bathtub and the outer pot are connected by a suction pipe and a discharge pipe, at least one of the suction pipe and the discharge pipe is provided with a stopper to prevent hot water from flowing back from the bathtub to the outer pot. A distinctive bath.