JPH0212527Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a discharged hot water tank that reduces mixing of newly supplied discharged hot water with previously stored residual hot water.

[Background technology]

BACKGROUND ART A hot water tank is known that stores waste water from a bath or the like and uses the waste heat to perform air conditioning or hot water supply.

In addition, most of these types of waste water tanks are of a type that automatically drains excess remaining hot water by supplying new waste water, but conventional is formed in such a way that the newly supplied waste water is directly pumped into it, and therefore the newly supplied waste water is likely to be drained while mixing with the remaining hot water, increasing mixing loss and reducing the amount of waste water. The heat utilization efficiency was poor.

[Purpose of invention]

The present invention aims to provide a drained hot water tank that can prevent mixing loss and solve the above-mentioned problems by slowly supplying newly supplied drained hot water near the liquid surface.

[Disclosure of invention]

Below, we will take as an example the case where the waste water tank of the present invention is used to store bath water from bathtub B as waste water.
One embodiment thereof will be described based on the drawings.

In the figure, a hot water tank 1 is equipped with a drain port 2 at its upper part, and has a heat exchanger 3 inside, and a hot water supply port 4 drilled in the side wall of the tank 1. A rectifier plate 5 for feeding is provided.

In addition, in this embodiment, the waste water supply port 4 has a drain port 2.
A partition plate 6 is provided between the discharged hot water supply port 4 and the rectifying plate 5, and is located slightly below the tank top plate.

The hot water tank 1 is, for example, a container body installed with its lower part submerged in the subfloor surface below the bathroom R,
A heat insulating material 21 is attached around it to keep it warm.

The drain port 2 is the open end of an upper drain pipe 22 that penetrates above the side wall of the tank, and the upper drain pipe 22 is connected to a drain pipe 24 extending from a drain port 23 provided at the bottom. Note that the drain pipe 24 is provided with a pot 25 on the upstream side of the connection point.

A vertical conduit 26 whose lower end reaches the bottom of the tank is attached to the open end of the upper drain pipe 22, and a ventilation pipe 27 passing through the tank top lid is connected to the upper end of the conduit 26. Hot water tank 1
maintains the liquid level h at the level of the drain port 2.

The heat exchanger 3 spirally circulates inside the hot water tank 1, and has one end connected to a city water pipe 29 via a pipe, and the other end communicates with a hot water storage tank 30 provided on the ceiling of the bathroom R, for example. do. Note that the hot water storage tank 30 is provided with a hot water supply pipe 31 that communicates with the bathroom R and the like.

Further, a hot water pipe 33 whose one end is connected to the hot water outlet of the bathtub B is connected to the hot water supply port 4 in the hot water tank 1, so that the hot water flows from below the liquid level h.

In this embodiment, the current plate 5 is composed of a vertical portion 5a rising from the bottom plate and an inclined portion 5b inclined from the upper end toward the drain port 2, and the current plate 5 is continuously spanned between the side walls. This partitions the inside and forms a storage section. Also, the inclined part 5b
is continuous with its upper end at approximately the same height as the drain port 2, that is, the liquid level h.

The partition plate 6 is disposed between the waste water supply port 4 and the rectifier plate 5 as described above, has a lower end cut off near the bottom plate, and is spanned between the side walls.

However, the hot water from the bathtub B flowing through the drain pipe 33 collides with the partition plate 6 to reduce its flow velocity and is further decelerated by passing below the partition plate 6. To partition the interior,
The molten metal can flow smoothly over the upper end of the molten metal along the liquid level h, and mixing with remaining molten metal is prevented.

Incidentally, surplus water from the remaining hot water that has become surplus due to the supply of new waste water rises in the conduit 26 and is discharged from the drain port 2. Further, the conduit 26 opens at the bottom, so that only the low-temperature water that has undergone heat exchange can be discharged, and the efficiency of utilizing the waste heat of the waste water is improved.

FIG. 2 shows another embodiment of the present invention, in which the current plate 5
The lower end is connected to the wall body in which the drain water supply port 4 is provided and is inclined diagonally upward, and the upper end is set at approximately the same height as the drain port 2 so as to be located near the liquid level h. Ru. In addition, the rectifier plate 5 is spanned between side walls to create a triangular prism-shaped reservoir in front of the drained hot water supply port 4, and the drained hot water whose flow velocity has been reduced inside is transferred from the upper end of the rectifier plate 5 to the liquid level. It can flow into the interior along the direction h. Note that by flowing city water into the heat exchanger 3, hot water that has undergone heat exchange with waste water can be supplied to the hot water storage tank 30. Note that the heat exchanger 3 can also heat the air for air conditioning, and a heat pipe can also be used as the heat exchanger 3.

[Effect of idea]

In this way, the waste water tank of the present invention can supply newly supplied waste water smoothly while reducing the flow velocity along the liquid surface, and therefore only low-temperature water that has undergone heat exchange can be drained from the drain port. It can bring about many effects, such as reducing the mixing loss associated with mixing and improving the efficiency of utilizing waste heat of waste water.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a diagram showing another embodiment. 2... Drain port, 3... Heat exchanger, 4... Exhaust water supply port, 5... Current plate.

Claims (1)

[Scope of utility model registration request] A hot water tank is provided with a drain port at the top and drains surplus water from the drain port while supplying hot water, and houses a heat exchanger for extracting waste heat from the hot water, and has a drain water supply port opened. , a rectifier plate is provided between the waste water supply port and the heat exchanger to partition the inside and whose upper end is connected to the drain port at approximately the same height, while the drain port is connected to a conduit whose lower end reaches the bottom of the tank. A hot water tank characterized by being electrically conductive.