JPH0224028Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a hot water bath pot having a circulation path for circulating and heating bathtub water and a hot water supply path for heating supply water, and in particular, hot water is supplied from the hot water supply path to the bathtub through the circulation path. The present invention also relates to a hot water supply bath kettle in which hot water is branched from the middle of the hot water supply path and hot water is supplied to other appropriate taps.

(Prior art) As shown in Japanese Unexamined Patent Publication No. 58-140556, the conventional hot water bath pot of this type connects the hot water supply path to the middle of the circulation path via a vacuum breaker valve, and heats the hot water using a hot water heat exchanger. The heated water is reheated in a bath heat exchanger to an appropriate temperature and then introduced into the bathtub.

(Problems to be solved by the invention) In this conventional hot water bath pot, when hot water is supplied to the bathtub, the temperature of the water at the outlet of the heat exchanger for hot water supply is lower than the temperature of the hot water supplied to the bathtub. Other taps branched from the hot water supply path had to use this low temperature hot water, and had the problem of not being able to provide high temperature hot water.

The purpose of the present invention is to solve the problems of the conventional hot water bath pot, and to provide a hot water bath pot that allows high-temperature hot water to be drawn from another tap even when hot water is being supplied to the bathtub.

(Means for solving the problem) In order to achieve this objective, the present invention has the following configuration. That is, it has a circulation path that circulates and heats bathtub water via a bath heat exchanger, and a hot water supply path that heats water supplied from a water supply pipe via a hot water heat exchanger. Branching from the downstream side of the exchanger into a first hot water pipe and a second hot water pipe,
The first hot water supply pipe is connected in the middle of the circulation path with a hot water mixing valve, a water stop valve, and a vacuum breaking means interposed in order from the upstream side, and the second hot water supply pipe is connected to another tap such as a kitchen. A sub-water supply pipe is provided which connects the water supply pipe to the hot water mixing valve by bypassing the hot water supply heat exchanger.

(Function) In a hot water bath pot with such a configuration,
The heating amount of the hot water heat exchanger is determined so that the water temperature at the outlet of the hot water supply heat exchanger is a high temperature, such as 80°C, and the hot water mixing valve installed in the first hot water supply pipe is set to the appropriate temperature for hot water supply in the bathtub. do.

Now, when the water stop valve installed in the first hot water supply pipe is opened, hot water supplied from the water supply pipe and heated to a high temperature by the hot water supply heat exchanger flows into the first hot water supply pipe, and the water is supplied to the sub-water supply by the hot water mixing valve. It mixes with the water supplied from the pipes, reaches an appropriate temperature, flows into the circulation path via the vacuum breaking means, and reaches the bathtub. On the other hand, when the other tap connected to the second hot water supply pipe is opened, hot water heated by the hot water supply heat exchanger is discharged through the second hot water supply pipe.

(Example) An example of the present invention will be described with reference to the drawings. The figure shows a schematic configuration of an embodiment of the present invention.
Reference numeral 1 designates a circulation path, which includes a bath heat exchanger 2, a lower communication path 3 that communicates with the bathtub and the inlet of the bath heat exchanger 2, and an upper communication path that communicates the outlet of the bath heat exchanger 2 with the bathtub. Consists of 4th class. In the lower communication passage 3, a water flow detection means 5 for detecting water flow in the direction from the bathtub side toward the entrance of the bath heat exchanger 2, a solenoid valve 6, and a circulation pump 7 are installed in order from the bathtub side. Also,
A bypass passage 8 is provided which branches from between the circulation pump 7 and the bath heat exchanger 2 and connects between the water flow detection means 5 and the electromagnetic valve 6. Reference numeral 9 denotes a solenoid valve provided midway through the bypass path 8, and 10 represents a temperature sensing device provided midway through the upper communication path 4. Reference numeral 11 denotes a hot water supply path, which includes a water supply pipe 12, a hot water supply heat exchanger 13, a first hot water supply pipe 14 and a second hot water supply pipe 15 branched on the downstream side of the hot water supply heat exchanger 13, and the like. The first hot water supply pipe 14 includes hot water mixing valves 1 in order from the upstream side.
6, a water stop valve 17, a temperature detector 18, a vacuum breaking means 19, and a solenoid valve 20 are interposed and connected between the solenoid valve 6 of the lower communication passage 3 and the circulation pump 7.
21 is an auxiliary water supply pipe that bypasses the hot water supply heat exchanger 13 and supplies water to the hot water mixing valve 16 from the middle of the water supply pipe 12, and 22 is a water flow detection means provided in the middle of the water supply pipe 12. 23 is a hot water mixing faucet installed in the kitchen, etc., and is connected to the second hot water pipe 1.
5 is extended and connected to the hot water inlet, and a water pipe 24 is connected to the water inlet.

In order to supply hot water to the bathtub in the hot water supply bathtub constructed as described above, the water stop valve 17 is opened, and in conjunction with this, the solenoid valve 20 and the solenoid valve 9 are opened and the circulation pump 7 is started. At this time, the solenoid valve 6 is closed, and a water flow is generated in the water supply pipe 12.
A hot water heating means (not shown) is activated by a signal from the water flow detection means 22, and the supplied water is heated to a predetermined high temperature in the hot water heat exchanger 13, and then reaches the hot water mixing valve 16, where it is supplied from the sub-water supply pipe 21. The water is mixed with the hot water and becomes the set temperature for hot water supply in the bathtub. The hot water at the set temperature passes through the vacuum breaking means 19, reaches the lower communication passage 3, is pressurized by the circulation pump 7, part of it passes through the bath heat exchanger 2, and is sent from the upper communication passage 4 to the bathtub, and the rest passes through the bypass passage 8. After that, they are each transported from the lower communication path 3 to the bathtub.

In this way, hot water at an appropriate temperature is supplied to the bathtub, and even while hot water is being supplied to the bathtub, the hot/cold water mixing faucet 23 supplies high-temperature water heated by the hot water supply heat exchanger 13 through the second hot water supply pipe 15. Introduced water piping 24
It is possible to use hot water at a desired temperature by appropriately mixing it with the water supplied from the boiler.

Note that when a large amount of high-temperature hot water is used at the hot water mixing faucet 23 while hot water is being supplied to the bathtub, the flow rate toward the first hot water supply pipe 14 decreases, and the temperature of the mixed water at the outlet of the hot water mixing valve 16 decreases. To deal with this, it is preferable to use a motor-driven thermomixer for the hot water mixing valve 16 so as to correct the mixed water temperature based on the hot water temperature detected by the temperature sensing device 18. Alternatively, a thermowax type mixing valve may be used.

By the way, in order to circulate and heat the bath water in this hot water supply bathtub, the solenoid valve 6 is opened and the circulation pump 7 is operated. Bathtub water flows in from the lower communication path 3, the water flow detection means 5 detects the water flow, is heated by the bath heat exchanger 2 by the bath heating means (not shown), and reaches the bathtub from the upper communication path 4. When the temperature detector 10 detects a preset temperature, the heating is stopped, the circulation pump 7 is stopped, and the solenoid valve 6 is closed.

(Effects of the invention) The invention has the following excellent effects.

That is, even when hot water is being supplied to the bathtub, high-temperature hot water can be drawn out using another tap branched from the hot water supply path, making it extremely convenient to use in practice.

[Brief explanation of drawings]

The figure is a schematic configuration diagram showing an embodiment of the present invention. 1... Circulation path, 2... Bath heat exchanger, 11...
...Hot water supply path, 12...Water supply pipe, 13...Hot water heat exchanger, 14...First hot water supply pipe, 15...Second hot water supply pipe, 16...Hot water mixing valve, 17...Water stop valve ,1
9... Vacuum breaking means, 21... Sub-water supply pipe, 23...
...Hot and cold water mixing faucet.

Claims (1)

[Scope of utility model registration request] It has a circulation path that circulates and heats bathtub water via a bath heat exchanger, and a hot water supply path that heats water supplied from a water supply pipe via a hot water heat exchanger, and the hot water path has the hot water supply heat exchanger. A first hot water supply pipe that branches from the downstream side of the water heater and connects to the circulation path via a water shutoff valve and a vacuum breaking means, and a second hot water supply pipe that connects to another tap such as a kitchen. A hot water bath kettle characterized in that a hot water mixing valve is provided upstream of the first water stop valve, and a sub water supply pipe is provided which connects the water supply pipe to the hot water mixing valve by bypassing the hot water heat exchanger. .