JPH0447555Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a water heater that can perform reheating, hot water supply, etc.

(b) Conventional technology For example, in Japanese Patent Application Laid-open No. 60-8649, a heat exchanger for hot water supply and a heat exchanger for reheating are installed side by side, and an outlet pipe extending from the heat exchange pipe of the heat exchanger for hot water supply is disclosed. Disclosed is a hot water supply device in which a hot water supply pipe is piped above a hot water supply heat exchanger and a reheating heat exchanger, and a hot water outlet of an outlet pipe is communicated with a water supply pipe connected to the reheating heat exchanger.

(c) Problems to be solved by the invention In the above-mentioned conventional technology, there is a problem that the outlet pipe is installed above the hot water supply heat exchanger and the reheating heat exchanger, so the piping route of the outlet pipe becomes long. was occurring. Furthermore, when the outlet pipes are installed behind the heat exchangers, a space for the piping is required behind each heat exchanger, making it difficult to downsize the water heater.

The present invention aims to shorten the piping route inside the water heater and to make the water heater more compact.

(d) Means for Solving the Problems In order to solve the above problems, the present invention includes a reheating heat exchange cylinder 7 and a reheating heat exchange pipe 8 wound around the outer periphery of the heat exchange cylinder 7. A heat exchanger 5 for reheating, a heat exchanger 11 for hot water supply having a heat exchange cylinder 13 for hot water supply, and a heat exchange pipe 14 for hot water supply wound around the outer periphery of the heat exchange cylinder, and a heat exchanger for reheating 5 and an outer box 3 that accommodates a heat exchanger 11 for hot water supply, in which one of the heat exchangers 11
A water heater is provided in which a pipe 15 extending from a heat exchange pipe 14 of one heat exchanger 5 is passed between heat exchange pipes 8A and 8B of the other heat exchanger 5.

(E) Effect The pipe 15 is passed between the heat exchange pipe 8A and the heat exchange pipe 8A of the reheating heat exchanger 5, and the pipe 15 is passed between the heat exchange pipe 8A and the heat exchange pipe 8A.
Since the space between the outer box 3 and the reheating heat exchanger 5 and hot water supply heat exchanger 11 can be minimized, the distance between the outer box 3 and the reheating heat exchanger 5 and the hot water supply heat exchanger 11 can be minimized, making the water heater thinner. The device can be made more compact. Moreover, the piping route of the pipe 15 can be made as short as possible, and the heat radiation loss from the pipe 15 can also be reduced.

(F) Embodiment Hereinafter, an embodiment of the present invention will be described in detail based on the drawings.

In Fig. 1, 1 is a reheating heat exchange device;
2 is a heat exchange device for hot water supply provided on the side of the heat exchange device for reheating, and 3 is an exterior box that houses the heat exchange device 1 for reheating and the heat exchange device 2 for hot water supply. Also, as shown in Figures 1 and 2,
In the reheating heat exchange device 1, 4 is a burner;
5 is a reheating heat exchanger connected to the upper end of the burner 4, and 6 is an exhaust duct connected to the upper end of this heat exchanger. The reheating heat exchanger 5 is composed of a heat exchange cylinder 7 and a reheating heat exchange pipe 8 wound approximately parallel to the outer surface of the heat exchange cylinder 7. Connected outlet pipe. Further, in the hot water supply heat exchange device 2, 10 is a burner, 11 is a hot water supply heat exchanger connected to the upper end of the hot water supply heat exchanger 10, and 12 is an exhaust duct connected to the upper end of the hot water supply heat exchanger 11. The hot water supply heat exchanger 11 includes a heat exchange cylinder 13 and a hot water supply heat exchange pipe 14 wound approximately parallel to the outer surface of the heat exchange cylinder 13.

15 is an outlet pipe connected to the hot water supply heat exchange pipe 14. For example, since the hot water outlet part of the water heater is located at the lower left side of the water heater, the outlet pipe 15 is located between the reheating heat exchange pipe 8A and the reheating heat exchange pipe 8B of the reheating heat exchanger 5. It passes diagonally downward and extends to the left side of the reheating heat exchanger 5.

In the water heater configured as described above, when filling a bathtub (not shown) with hot water, the burner 10 starts combustion and water flows through the hot water heat exchange pipe 14 as shown by the solid arrow. Hot water whose temperature has increased through heat exchange flows through the outlet pipe 15 and is supplied from the water heater to the bathtub. Further, when the hot water in the bathtub is reheated, the burner 4 starts combustion and the hot water in the bathtub is circulated through the reheating heat exchange pipe 8, so that the temperature of the hot water in the bathtub gradually rises.

According to the above embodiment of the present invention, the outlet pipe 15 connected to the hot water supply heat exchange pipe 14 is passed between the reheating heat exchange pipe 8A and the reheating heat exchange pipe 8B, and the reheating heat exchange tube 7 The outlet pipe 15 can be installed using the space between the heat exchange pipe 8A and the heat exchange pipe 8B on the outer periphery of the
The distance between the back plate 3A and the reheating heat exchanger 5 and the hot water supply heat exchanger 11 can be slightly reduced, and as a result, the thickness 20 of the hot water supply device can be reduced to make it more compact.

In addition, the outlet pipe 15 is reheated and the heat exchange pipe 8
The piping route of the outlet pipe 15 can be made as short as possible by piping it in the space between A and the reheating heat exchange pipe 8B, and as a result, the heat radiation loss from the outlet pipe 15 can also be reduced.

In the above embodiment, since the hot water outlet of the water heater is located at the lower left side of the water heater, the outlet pipe 15 is passed between the reheating heat exchange pipe 8A and the reheating heat exchange pipe 8B. Although the outlet pipe 15 is extended to the left side of the heating heat exchanger 5, for example, when the hot water outlet of the water heater is located at the lower right side of the water heater, the outlet pipe 15 is The outlet pipe 9, which is extended to the right side of the water supply heat exchanger 13 and connected to the reheating heat exchange pipe 8, is passed between the hot water supply heat exchange pipe 14A and the hot water supply heat exchange pipe 14B. By extending it to the right side of the exchange device 2, the same effects as in the above embodiment can be obtained. For example, even when a pipe is connected in the middle of the hot water supply heat exchange pipe 14, the same effects as in the above embodiment can be obtained by passing this pipe between the reheating heat exchange pipes 8.

Note that similar effects can be obtained by using the reheating heat exchanger 5 as a heating heat exchanger, for example.

(g) Effects of the invention The present invention is a water heater configured as described above, and includes a first heat exchange cylinder and a first heat exchange pipe wound around the outer periphery of the heat exchange cylinder. A second heat exchanger having a second heat exchange cylinder and a second heat exchange pipe wound around the outer periphery of the heat exchange cylinder, and an outer box housing each heat exchanger. In water heaters, the pipe extending from the heat exchange pipe of one heat exchanger is passed between the heat exchange pipes of the other heat exchanger, minimizing the piping space around each heat exchanger. As a result of this, you can
The hot water supply device can be made thinner and more compact, and the piping route of the pipe can be shortened.

[Brief explanation of drawings]

Figures 1 and 2 show an embodiment of the present invention. Figure 1 is a schematic front view showing the top of the water heater with the front plate removed, and Figure 2 is a schematic front view showing the top of the water heater with the front plate removed. It is a schematic side view showing the upper part of a water heater. 3...Exterior box, 5...Heat exchanger for reheating (first heat exchanger), 7...Heat exchange cylinder for reheating (first heat exchanger)
8, 8A, 8B... Reheating heat exchange pipe (first heat exchange pipe), 11... Heat exchanger for hot water supply (second heat exchanger), 13... Heat exchange cylinder for hot water supply ( 14... Hot water supply heat exchange pipe (second heat exchange pipe), 15... Outlet pipe.

Claims (1)

[Scope of utility model registration request] A first heat exchanger having a first heat exchange cylinder and a first heat exchange pipe wound around the outer periphery of the heat exchange cylinder; a second heat exchange cylinder and a second heat exchange pipe wound around the outer periphery of the heat exchange cylinder;
In a hot water supply apparatus comprising a second heat exchanger having a heat exchange pipe and an outer box housing the first heat exchanger and the second heat exchanger, the heat exchange pipe extending from the heat exchange pipe of one heat exchanger is A water heater characterized in that a pipe is passed between heat exchange pipes of the other heat exchanger.