JPH033893Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a hot water circulation bathtub configured to heat water in the bathtub by circulating hot water in a heat exchanger built into the bottom of the bathtub. It is something.

[Prior Art] FIGS. 1 and 2 show a conventional hot water circulation bathtub. In this figure, a bathtub 01 has a heat exchanger 03 in which high-temperature water circulates inside a heating chamber 05 formed at its inner bottom, and a heat exchanger 03 is installed in the heating chamber 05 so as to cover the heating chamber 05. Also, a bottom plate 02 with convection ports 04 provided on the entire surface is attached so as to form a part of the bottom of the bathtub 01.

[Problems with the prior art] As mentioned above, the conventional hot water circulation bathtub has a bottom plate of 0.
Since convection ports 04 are provided on the entire surface of the bathtub 2, hot water heated by the heat exchanger 03 rises into the bathtub 01 through these convection ports 04. According to experiments, there is a temperature difference of about 8° C. between the hot water rising from the convection port 04 and the hot water in the bathtub at the outlet of the convection port 04, as shown in FIG.
For this reason, if heat exchanger 03 is used to reheat the bath while taking a bath, the high-temperature convection hot water may come into direct contact with the bather's buttocks, legs, etc., causing discomfort and sometimes causing burns. .

Therefore, Japanese Patent Application Laid-Open No. 117946/1983 proposed a method in which a gap was formed around the flat bottom plate, instead of on the entire surface of the bottom plate 02, so that hot water would rise into the bathtub through this gap. has been done. However, simply creating a gap around the cover in this way, especially in the case of a small bathtub, can cause parts of the body to get stuck in the gap and block the gap, so the above-mentioned drawbacks still remain unresolved. Not yet.

The present invention aims to solve the above-mentioned drawbacks of conventional hot water circulation bathtubs, and aims to solve the problem of causing discomfort to bathers when hot water heated by a heat exchanger flows out into the bathtub. The purpose is to prevent the convection opening from being inadvertently blocked by the bather without flowing out from the position.

[Means to solve the problem] The configuration of the present invention is as follows.

In hot water circulation bathtubs, a heat exchanger for circulating high-temperature water is built into the inner bottom of the bathtub, which is a flat rectangle, and is covered with an inner bottom plate. This hot water circulation bathtub is characterized in that the periphery of the front half of the bottom plate is raised up with a gap between it and the inner wall of the bathtub, and that the raised top part is provided with convection ports only on the left and right sides.

[Function] In the above bathtub, when high-temperature water is circulated through the heat exchanger, it is heated by the heat exchanger, and the hot water rises into the bathtub from the convection ports formed on the left and right sides of the front half of the bathtub. . At this time, since the convection opening is located in the first half of the bottom plate and at a high position, the bather's body does not touch the convection opening. As a result, the convection openings are not blocked, and the heated hot water does not come into direct contact with the body, especially the buttocks.

[Example] Figs. 4 to 7 show examples of the present invention. The code 1 is a flat rectangular bathtub, 2 is the bottom plate inside the bathtub 1,
3 is the inner bottom of the bathtub 1 and is a heat exchanger built into the front half, and 5 is a heating chamber.

2a is a rising portion formed by bending the edge of the front half of the inner bottom plate 2 upward, and 2b is the rising portion 2a, which is a convection opening formed by cutting out a portion of both left and right edges.

The structure 2c in FIGS. 6 and 7 shows another embodiment of the convection port 2b of the above embodiment, and shows a convection port opened along both left and right sides of the rising portion 2a of the bottom plate 2.

In the present invention, the shape of the convection ports 2b, 2c, the manner in which the convection ports 2b, 2c are provided, etc. may be arbitrary, and the only condition is that they be located on both the left and right sides.

[Effects of the present invention] As described above, the present invention raises the periphery of the front half of the inner bottom plate, provides convection ports on the left and right sides of this raised portion, and heats the bathtub from the left and right convection ports along the side wall. The heated water flows out into the bathtub. As a result, the following effects can be expected.

a) It is difficult for the bather's feet to rest on the raised parts on both the left and right sides of the inner bottom board. As a result, the convection port is no longer blocked by feet, and a dead space can be reliably created above the convection port, so there is no need for hot water to come into direct contact with the bather's feet during reheating. As a result, there is no discomfort, there is no risk of burns, and it is possible to take a comfortable bath even while reheating the heat.

b Since there is no convection opening on the front edge of the inner sole plate, even if a bather stretches his or her feet toward the front wall of the bathtub, there is no need for the toes to come into contact with the high-temperature water or to block the convection opening with the toes. There is no allocation.

c. Since there is no convection opening on the butt side of the bather, there is no need for hot water to rise from the butt side.

[Brief explanation of drawings]

Figure 1 is a plan view of a conventional hot water circulation bathtub;
The figure is a cross-sectional view taken along the line A-A, Figure 3 is a graph showing the temperature difference between the hot water temperature in the bathtub and the convection hot water near the convection outlet, and an example of temperature rise during reheating, and Figure 4 is an example of the present invention. A plan view of the bathtub showing the
6 is a plan view of a bathtub showing another embodiment of the present invention, and FIG. 7 is a sectional view taken along line C-C. 1...Bathtub, 2...Bottom plate, 2a...Rising portion, 2b, 2c...Convection opening, 3...Heat exchanger.

Claims (1)

[Scope of utility model registration request] In hot water circulation bathtubs, a heat exchanger for circulating high-temperature water is built into the inner bottom of the bathtub, which is a flat rectangle, and is covered with an inner bottom plate. This hot water circulation bathtub is characterized in that the periphery of the front half of the bottom plate is raised up with a gap between it and the inner wall of the bathtub, and that the raised top part is provided with convection ports only on the left and right sides.