JPH0830605B2 - Bathing device - Google Patents

Description

Description: [Industrial field of application] The present invention relates to a bathtub repulsion device for supplying hot water from a hot water storage type water heater.

[Prior Art] A bathtub repelling device is a device that raises the temperature of a bathtub once it has fallen to a desired temperature,
In a bathtub equipped with an instantaneous water heater that uses gas, oil or the like, a method of using this water heater to forcibly circulate the hot water in the bathtub by a pump or the like to heat it can be used.

However, in a bathtub that is not equipped with the above-described water heater, for example, a hot water storage type water heater such as a midnight power water heater that supplies hot water, such repulsion cannot be performed. Therefore, in order to raise the lowered hot water temperature to an appropriate temperature in a bathtub that uses such a hot water storage type water heater, in the conventional bathtub, new hot water is poured from the hot water storage type water heater into the bathtub. It was either hot water or a separate heating device to remove the water.

For hot water, it is necessary to manually open the hot water tap, pour the hot water into the bathtub, judge by hand whether the hot water temperature rises while stirring, and then perform the work of closing the hot water tap when it reaches an appropriate temperature. In addition, the amount of hot water in the bathtub increases when the hot water is used. For example, if you have hot water with a temperature of 38 ℃ in a 200 liter bath and you want to raise the temperature of this hot water to 42 ℃, and the temperature of the hot water is 80 ℃, the formula is 200l × 38 ℃ + Xl × 80 ℃ = (200
+ X) 1 × 42 ° C., X = 21, that is, 21 boiling water must be performed. Therefore, when the temperature of the hot water in the bathtub is low, a large amount of hot water is required and the hot water overflows from the bathtub.

In addition, examples of separately providing a heating device include, for example, those shown in Japanese Utility Model Publication No. 62-156751 and Japanese Patent Publication No. 62-60626, which use a heat pump water heater as a heat source (both not shown), and a small type. Some of them use an electric heater as a heat source, and all of them perform repulsion between a heating device using gas or electricity as a heat source and a bath while circulating hot water with a circulation pump.

[Problems to be Solved by the Invention] As described above, in the conventional bathtub repelling device, is there a separate heating device in the bathtub for supplying hot water by the hot water storage type water heater such as the midnight power water heater? However, it is economically wasteful to install a separate heating device, but when using boiling water, you must rely on humans to open and close the taps and stir the hot water. Must
It is a troublesome work except when taking a bath. Further, since the temperature of the hot water is high, there is a risk of burns and the like, and the hot water increases the amount of hot water in the bathtub, which causes an overflow and thus inefficiency.

The present invention has been made to solve such a problem, and even in a bathtub for supplying hot water by a hot water storage type water heater, there is no need to provide hot water or to provide another heating device, and safely and efficiently, It is an object of the present invention to obtain a bathtub repelling device that can automatically repel a desired temperature.

[Means for Solving the Problem] In a bathtub repelling device according to the present invention, a heat exchanger is provided between a hot water storage water heater and a bathtub, and hot water stored in the hot water storage water heater and the inside of the bathtub. The hot water in the bath is circulated to this heat exchanger, and the hot water in the bathtub is removed by heat exchange. Then, by detecting the temperature of the hot water that circulates from within the bathtub, the reheating temperature is automatically controlled. In addition, the existing hot water storage type water heater does not need to be specially processed, and the reflux water that has passed through the heat exchanger can be reused.

[Operation] In the present invention, a heat exchanger is provided between the hot water storage water heater and the bathtub, and the hot water stored in the hot water storage water heater is
The hot water in the bathtub is circulated to this heat exchanger, and the heat in the bathtub is repelled by heat exchange. It is not necessary to provide a separate heating device or a separate heating device, and it is possible to perform a repulsion that can automatically and safely maintain a desired temperature safely and efficiently.

[Embodiment] FIG. 1 is a block diagram showing a configuration of a bathtub repelling device according to the present invention, in which (1) is a hot water storage type hot water dispenser that uses late-night electric power, and (2) is a hot water storage type hot water dispenser (1). A heater inserted in the lower part of the water supply pipe, (3) a water supply pipe for supplying water to the hot water storage water heater (1), (4) a decompression check valve provided in the middle of the water supply pipe (3), (5) ) Is a safety valve, (6) is the first circulation path, (7) is the first pump, (8) is the second circulation path,
(9) is a second pump, (10) is a heat exchanger, (11) is a temperature sensor, (12) is a bathtub, and (13) is a remote controller provided inside the bathroom, and the temperature sensor is indicated by a broken line. (11), the first pump (7), and the second pump (9) are connected so that they can be operated remotely.

The first circulation path (6) is a path for circulating hot water between the water heater (1) and the heat exchanger (10) by the first pump (7), and the second circulation path (8) is The second pump (9) serves as a path for circulating hot water between the bath (12) and the heat exchanger (10). The heat exchanger (10) exchanges heat between the hot water flowing in the first circulation path (6) and the hot water flowing in the second circulation path (8), and the temperature sensor (11) is It is provided in the second circulation path (8), and the temperature of the hot water in the bathtub (12) is detected through the hot water temperature in this path. Although not shown, the remote controller (13) is provided with a discharge start switch, a bathtub hot water temperature setting device, and a hot water temperature display lamp, and has a built-in control device for controlling the whole.

Next, the operation will be described. Hot water is supplied from the hot water storage type water heater (1) to the bathtub (12), but the hot water in this bathtub (12) decreases in temperature over time. Idaki is needed.

Here, by pushing the pushing start switch provided on the remote controller (13), the first pump (7) and the second pump (7)
The hot water from the hot water storage type water heater (1) flows out through the first circulation path (6), and the hot water from the bathtub (12) flows out through the second circulation path (8).

The hot water flowing out to the first circulation path (6) and the hot water flowing out to the second circulation path (8) are heat-exchanged with each other when they reach the heat exchanger (10), that is, the second The hot water in the bathtub (12) flowing through the circulation path (8) is driven out by the hot water from the hot water storage type water heater (1) by heat exchange, and is returned to the bathtub (12) again. Therefore, the temperature of the hot water in the bathtub (12) is the second
The mixture is stirred by the reflux from the circulation route (8), and the temperature rises almost uniformly. The temperature sensor (11) provided in the second circulation path (8) detects this rise in the hot water temperature and reports it to the remote controller (13). When the hot water temperature in the bathtub (12) rises to the set hot water temperature, a command is issued and the first pump (7) and the second pump (9) are stopped.

As the operation of the remote controller (13), press the pushing start switch once to finish pushing, and then set to automatically start pushing again when the water temperature in the bathtub (12) drops again, or There are two methods of setting, that is, setting is made so that repulsion is not performed unless the repulsion switch is pressed.

The hot water from the hot water storage type water heater (1) flowing through the first circulation path (6) is cooled by the cold water from the second circulation path (8) in the heat exchanger (10), and the hot water storage method is resumed. Return to the water heater (1). However, even though it is said that the refluxed hot water has been heat-exchanged and cooled, it still retains a sufficiently high temperature, so that it can be used again as hot water for hot water supply. That is, a hot water storage type water heater (1) that uses late-night power etc.
For economic reasons, holds only the minimum amount of hot water that can cover the daily hot water load, so if this hot water is consumed only for repulsion, sufficient hot water can be supplied. There is a risk of disappearing.

As for the usage of the hot water storage type hot water supply device (1) in a general household, the hot water supply to the bathtub (12) is the largest of the hot water supply load, and in general, the request for hot water supply to the bathtub occurs only once. It is the time of day or evening. Therefore, at the time of recharging, the hot water storage type water heater (1) has already consumed more than half of the total amount of hot water due to the hot water supply until then, and more than half the height of the hot water storage tank is from the water supply pipe (3). It is a layer of low temperature water that has been supplied. If the hot water refluxed from the first circulation path (6) is returned to this water layer, it will be cooled and cannot be used again as hot water for hot water supply. For this reason, the position of the pipe for returning the hot water that has recirculated to the hot water storage type water heater (1) must be provided at a height position that is about 2/3 of the height of the hot water storage tank, as shown in FIG.

Further, the hot water storage type water heater (1) generally has only two piping facilities, that is, a water supply port for supplying water from the outside and a hot water supply port for supplying heated hot water to each load. In order to do so, the hot water storage type water heater (1) must be processed to provide another return port. However, the hot water storage type water heater (1) is made of an enamel finish of an iron plate or a stainless material, and this processing is not easy.

FIG. 2 is a view showing an embodiment in which the present invention can be carried out without the need to process the hot water storage type water heater (1) in order to solve the above problems, and is shown in FIG. First
The hot water supply port (14) is formed by integrally forming the hot water supply pipe (15) and the return flow pipe (16) connected to the circulation path (6) of
The outlet of the reflux water of the reflux pipe (16) is opened at a height position of 2/3 of the height of the hot water storage tank.

[Effects of the Invention] As described above, the present invention provides a heat exchanger between the hot water storage type water heater and the bathtub to provide the hot water held in the hot water storage type water heater and the hot water spread in the bathtub. Since it was circulated to the heat exchanger and the hot water in the bathtub was repelled by heat exchange, even in the bathtub where hot water is supplied by the hot water storage type water heater,
There is no need to provide hot water or a separate heating device, and safe and efficient repulsion is possible. In particular, since the temperature of the hot water during the recharging can be monitored by the temperature detecting means, it is possible to perform the same operation as an apparatus for separately reheating and performing the recharging. Further, there is an effect that it is not necessary to process the existing hot water storage type water heater, and the refluxed hot water that has passed through the heat exchanger can be reused.

[Brief description of drawings]

FIG. 1 is a block diagram showing the construction of a bathtub repelling device according to the present invention, and FIG. 2 is a diagram showing another embodiment of the present invention. (1) is a hot water storage type water heater, (2) is a heater, (3) is a water supply pipe, (4) is a decompression check valve, (5) is a safety valve, (6) is a first circulation path, (7) Is a first pump, (8) is a second circulation path, (9) is a second pump, (10) is a heat exchanger,
(11) is a temperature sensor, (12) is a bathtub, (13) is a remote controller, (14) is a hot water supply port, (15) is a hot water supply pipe, and (16) is a return pipe. The same reference numerals in the drawings indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Seshita 2-14-40 Ofuna, Kamakura-shi, Kanagawa Mitsubishi Electric Corporation Product Research Laboratory (72) Nobuo Otsuka 2-14-40 Ofuna, Kamakura-shi, Kanagawa (72) Inventor Hidemitsu Nagashima 5-1-1, Ofuna, Kamakura-shi, Kanagawa Mitsubishi Electric Corporation, Ofuna Works (56) Reference JP 62-73033 (JP, A) JP 58-129131 (JP, A)

Claims (1)

[Claims] Claim: What is claimed is: 1. A bathtub replenishing device for replenishing a bathtub supplied by a hot water storage type water heater, wherein a heat exchanger and hot water stored in the hot water storage type water heater are provided to the hot water storage type water heater and the heat source. A first circulation path that circulates between the heat exchanger and a heat exchanger, and the hot water storage water heater side of the first circulation path supplies hot water to the heat exchanger at a hot water inlet of an existing hot water storage water heater. A hot water supply pipe and a reflux pipe for refluxing the refluxed hot water that has passed through the heat exchanger into the hot water storage type water heater, and a coaxial pipe having a coaxial structure is attached, and the hot water storage of the reflux pipe is performed. Means for ensuring the outlet of the reflux hot water in the hot water heater at a height position of about 2/3 of the height of the hot water storage water heater, and the hot water supplied in the bathtub and the heat exchange with the bathtub. A second circulation path that circulates between the container and the temperature provided in the second circulation path. Detecting means and, bathtub follow fired apparatus characterized by comprising a means for stopping the circulation of hot water in accordance with the output of the temperature detecting means.