JPH0443728Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention A: Industrial field of application This invention aims to provide a simple heat exchanger suitable for installation in bathtubs and water heaters.

B. Prior Art and its Problems Conventionally available products of this type exchange heat by exposing a heat exchange coil to a flame or by placing it inside a smoke exhaust pipe. However, this makes it impossible to adjust the temperature of the hot water, making it impossible to use it as hot water in a bathtub, for example.

Configuration A of the invention Means for solving the problem In the present application, an exchanger having the following configuration is installed in a bathtub containing water to be heated or in a water chamber of a water heater. That is, in the present invention, in the first heat exchange section 2 located inside the spirally wound copper tube, the winding start part is configured as a hot water inlet 2A, and the winding end part is configured as a hot water outlet 2B, and these hot water inlets and A first hot water inlet valve 2A'' and a first hot water outlet valve 2B'' are provided at the hot water outlet via lead-out pipes 2A' and 2B', respectively.
In the second heat exchange part 3, which is a spirally wound copper tube located outside the heat exchange part 2, the beginning of the winding is configured as a hot water inlet 3A, and the end of the winding is configured as a hot water outlet 3B. The hot water outlet is provided with a second hot water inlet valve 3A'' and a second hot water outlet valve 3B'' via lead pipes 3A' and 3B', respectively, and the total length of the copper pipe of the second heat exchange section 3 is as follows. It is configured to be longer than the entire length of the copper tube of the first heat exchange section 2, and the above-mentioned four valves are arranged such that the first
The hot water inlet valve 2A'' and the first hot water outlet valve 2B'' are arranged as a pair, and the second hot water outlet valve 3A'' and the first hot water outlet valve are located on the left and right sides outside of these. 3B'' are provided in parallel, the hot water supply pipe 4 is connected to the first hot water inlet valve 2A'', the second hot water outlet valve 3A'', and the second hot water outlet valve 3A'', and the hot water discharge pipe 5 is , first hot water outlet valve 2
This is a simple heat exchanger connected to the first temperature and first outlet valve 3B''.

B. Example 1 of the invention is a simple heat exchanger of the invention. Reference numeral 2 denotes a first heat exchange section located inside a spirally wound copper tube, with a hot water inlet 2A at the beginning of the winding and a hot water outlet 2B at the end of the winding. A first hot water inlet valve 2A'' and a first hot water outlet valve 2B'' are provided at the hot water inlet and hot water outlet via lead pipes 2A' and 2B', respectively. Reference numeral 3 denotes a second heat exchange section located outwardly by winding a copper pipe in a spiral shape, with the beginning of the winding serving as a hot water inlet 3A, and the end of the winding serving as a hot water outlet 3B. A second hot water inlet valve 3A'' and a second hot water outlet valve 3B'' are provided at the hot water inlet and hot water outlet via lead-out pipes 3A' and 3B', respectively. In this case, the total length of the copper tubes of the second heat exchange section 3 is configured to be longer than the total length of the copper tubes of the first heat exchange section 2. Further, the first and second heat exchange parts 2 and 3 may be configured in a single disk shape by wrapping the second heat exchange part 3 around the outer periphery of the first heat exchange part 2. The first and second heat exchange parts 2 and 3 may be configured as separate parts. When processing copper tubes into a spiral shape, even if the adjacent copper tubes are in close contact with each other, a predetermined distance D can be provided between the adjacent copper tubes. With such spacing, the heat exchange area becomes large.
Furthermore, the arrangement of the four valves described above is configured as follows. That is, referring to FIG. 1, the first hot water inlet valve 2A'' and the first hot water outlet valve 2B'' are arranged as a pair on the left and right sides of the inside, and
A second hot water inlet valve 3A'' and a second hot water outlet valve 3B'' are arranged in parallel with each other at left and right positions outside these valves. In addition, in FIG. 5, the first and second heat exchange parts 2 and 3 are shown divided into left and right parts, but
They may be arranged so as to be stacked one above the other.

4 is a hot water supply pipe, which is connected to a boiler, instantaneous water heater, heat exchange device using waste heat, or other suitable water heater, thereby supplying hot water to the heat exchanger of the present application. . 5 is a hot water discharge pipe through which hot water that has passed through the heat exchanger is discharged, and can be reheated for further use. 6 is a bathtub, and 6A is hot water in this bathtub. Reference numeral 7 denotes a hermetically insulated container, to which a water supply pipe 7A connected to a water supply or the like and a hot water discharge pipe 7B are respectively connected. 7C is a safety valve.

Effect of the invention A: The device of the present invention is used by being placed in a bathtub 6 in an open state or a container 7 in a closed state.

B Hot water supplied from pipe 4 passes through a heat exchange section and is discharged from pipe 5. At this time, the heat exchange section exchanges heat with the water in the bathtub 6 or container 7.

C The heat exchange described above is related to the amount and temperature of hot water passing through the heat exchange section, but in the case of the present invention, it is extremely convenient because it can be adjusted as described below.

A First and second valves 2A″, 2B″, 3A″, 3
When B″ is closed, no heat exchange takes place.

(b) When the first valves 2A'', 2B'' are opened and the second valves 3A'', 3B'' are closed - only the first heat exchange section 2 performs the heat exchange action.

C. When the first valves 2A'', 2B'' are closed and the second valves 3A'', 3B'' are opened, heat exchange is performed only in the second heat exchange section 3.

D. In the case of B and C above, since the second heat exchange section 3 is longer than the first heat exchange section 2, the heat exchange area is wider, and the amount of heat exchange increases accordingly.

E Each of the first valves 2A″, 2B″ and each of the second valves 3
When both A″ and 3B″ are opened, the heat exchange parts 2 and 3 also operate.

From the perspective of the heat exchange amount, the amount of heat exchanged is small in case of B above, medium in case of C above, and large in case of E above.
It can be adjusted as appropriate by operating each valve.

[Brief explanation of the drawing]

Figure 1 is an overall perspective view, Figures 2 and 3 are cross-sectional views of the state in which it is used in a bathtub, Figure 4 is an enlarged view of the main parts of Figure 3, and Figure 5 is an illustration of the present invention in a sealed container. FIG. 6 is a perspective view showing the state in which the above is used, and FIG. 6 is a cross-sectional view of the same. 1... Simple heat exchanger, 2... First heat exchange section, 3
...Second heat exchange section.

Claims (1)

[Scope of utility model registration request] The first tube is located inside the spirally wound copper pipe.
The winding start part in the heat exchange part 2 is the hot water inlet 2A,
The winding end portion is configured as a hot water outlet 2B, and a first hot water inlet valve 2A'' and a first hot water outlet valve 2B'' are provided at the hot water inlet and the hot water outlet via lead-out pipes 2A' and 2B', respectively. In the second heat exchange part 3, which is a spirally wound copper tube located outside the first heat exchange part 2, the beginning of the winding is configured as a hot water inlet 3A, and the end of the winding is configured as a hot water outlet 3B. A second hot water inlet valve 3A'' and a second hot water outlet valve 3B'' are provided at the hot water inlet and hot water outlet via lead-out pipes 3A' and 3B', respectively.
Furthermore, the total length of the copper tubes of the second heat exchange section 3 is configured to be longer than the total length of the copper tubes of the first heat exchange section 2,
The arrangement of the four valves described above is such that the first hot water inlet valve 2A'' and the first hot water outlet valve 2B'' are arranged as a pair on the left and right sides of the inside, and the left and right positions are arranged on the outside of these valves. A second hot water outlet valve 3A'' and a first hot water outlet valve 3B'' are provided in parallel, and the hot water supply pipe 4 has a first hot water inlet valve 2A'', a second hot water outlet valve 3A'' and a second hot water outlet valve 3A''. A simple heat exchanger characterized in that it is connected to a hot water outlet valve 3A'', and the hot water discharge pipe 5 is connected to a first hot water outlet valve 2B'' and a first hot water outlet valve 3B''.