JPH01134158A - Hot water feeding device for automatic bath - Google Patents

Abstract

PURPOSE:To ensure safety and to save energy, by providing a device constituted of two level detectors, a hot water temperature detector and a single switch for feeding hot water to the tab and further a mode providing selecting means to produce hot water and feed it to the bath tab. CONSTITUTION:A bath switch 23 is made to ignite a burner. Simultaneously, it is decided by turning ON or OFF of a level switch L20 that a level is positioned at a reference value being that of a bath adapter 18. In this case, if the level exceeds the reference value, progress to a sequence of automatic additional burning is effected. The feed of high temperature hot water is performed for a specified time or until temperature is increased to a set value. When it is detected by a level switch H19 that a level exceeds a set value, additional burning (filling with high temperature hot water) operation is effected, and when below the set value, automatic additional burning is continued. A bath tab temperature, detected by a hot water temperature detector 21, is compared with a set temperature set by a boiling-up hot water temperature set switch 24 of a remote control 22, when the bath tab temperature exceeds a set temperature, boiling is considered to be completed, set temperature hot water is fed, and when the level switch H19 is turned ON, a flow is completed.

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an automatic bath water heater that automatically pours water into a bathtub and increases the temperature of hot water by adding hot water. .

(Prior Art and Problems) Conventionally, there is a water heater that pours hot water into a bathtub or heats it up, as disclosed in Japanese Unexamined Patent Publication No. 164164/1983. However, this increases the number of operation switches, and the user has to be careful to press the switches for automatic operation and reheating operation. In other words, there was a risk that the user might mistakenly turn on the additional firing switch even though the user intended for automatic operation.

(Means for Solving the Problems) In order to solve the above problems, the present invention has the following configuration. That is, it is a device for generating hot water and supplying it into the bathtub, and includes a water level detector L↑'rH that detects the bath calendar water level at at least two points, and a hot water temperature detector that detects the temperature of the hot water in the bathtub. The present invention is characterized by having a single switch for supplying hot water to the bath, and a mode selection means for automatically selecting the yζ rotation mode based on the signal from the water level detector after the switch is turned on.

(Function) After turning on the switch, if the water level in the bathtub has not reached a predetermined standard water level, automatic lowering operation will be performed, and if the water level is higher than the set water level set by the user, high-temperature water will be poured (
If the water level is between the standard water level and the set water level, the automatic system will also perform the reheating operation, which stops when the set temperature and water level are reached.

(Example) In the figure, (1) is a main body of a water heater, which has a heat exchanger (2) and a burner (3) inside. A water area sensor (5) and an inlet thermistor (6) are arranged in the inlet channel (4) to the heat exchanger (2), and an outlet thermistor (8) is arranged in the outlet channel (7).
J and a water flow control valve (9) are arranged. Deyuji (7)
is branched, one is a solenoid valve, and the other is a vacuum breaker.
The bath water supply path a4 is connected to the lower part of the side wall of the bathtub (12) via 〇υ, and the other is the general hot water supply island σhiro. In the general hot water supply system, a check valve α9 is arranged downstream from the branch point, and downstream of that, there is a bypass passage α force that bypasses the heat exchanger B (2) from the water island (4) and a bypass solenoid valve αG is arranged. It has been merged. The bath water supply path side is connected to the bathtub μs) by a bath adapter (g), and the bath adapter (to) is connected to a water level switch H<+g that detects the water level set as a water level detector that detects the water level of the bathtub. A water level switch L that detects a reference water level that is slightly higher than the adapter (to) and a water temperature detector 3D that detects the temperature of water in the bathtub are provided. Incidentally, the water level detector is not limited to the water level switch, but may be constructed from a pressure sensor or the like. ■ is a remote control that has a single switch for supplying bath water, a full switch (c) and a boiling water temperature setting switch (to). No is a gas proportional valve that controls the combustion amount of the burner (3). (b) is a controller for controlling each load, and includes mode selection means (to) for selecting an operation mode.

Next, the operation of bath hot water supply in the above configuration will be explained. First, when you turn on the Furu switch (sl),! The af valve αQ opens, the water flow is detected by the water flow sensor (5), and the burner is ignited. At the same time as this operation, the water level switch L
Based on whether (7) is ON or OFF, it is determined whether there is a water level (reference water level) up to the bus adapter (G) (S2). If it is below the standard water level, proceed to the automatic water drop sequence, and if it is above, proceed to the automatic reheating sequence. The sequence of automatic reheating is to first throttle the water flow control valve (9) and dispense hot water at a high temperature (e.g. 85°C) for a certain period of time (Tl, e.g. 5 minutes).
S3, S4). This hot water may be drawn not only for a certain period of time but also to a certain temperature. This water level switch H(]fl is O
Determine whether the set water level has been reached depending on whether it is N or OFF (S
5). If it is above the set water level, it is determined that it is just reheating and the reheating sequence is started, and if it is below the set water level, the automatic reheating sequence is continued as follows. The bathtub water temperature detected by the water temperature detector Qυ and the boiling water temperature setting switch on the remote control ■
If the bathtub water temperature exceeds the set temperature, it is determined that the bathtub has boiled.
) is opened to dispense hot water at the set temperature (S7). Then, when the water level rises and the water level switch Ha9 turns on (S8)
It is assumed that the set water level has been reached and 70- is ended (S9).

In the reheating sequence, the hot water is supplied at the set temperature for a certain period of time (T2
For example, 7 seconds) and drain the hot water in the hot water outlet (7), then finish 70- (SIO-3l <1・89)
.

In the automatic drop sequence, hot water is first supplied to the reference water level at the set temperature (812, 513). If the standard water level is not reached even after hot water is supplied for a long time (for example, 20 minutes at T3), it is determined that there is a water leak and the operation is stopped (S15/51).
6). When the standard water level is reached, hot water is tapped at a high temperature assuming that there is residual water below the initial standard water level (Si2). When the boiling temperature reaches i (S6), hot water at the set temperature is supplied to the set water level (S7, S8, S9).

(Effects of the Invention) As described above, the present invention is provided with a mode selection means that automatically selects a mode according to the water level, so the shaking switch can be a single switch, and the bathtub is empty. This eliminates the need to press the reheat switch by mistake and fill the bathtub with high-temperature water, making it safe, energy-saving, and extremely easy to use.

[Brief explanation of the drawing]

FIG. 1 is an overall circuit diagram of an embodiment of the present invention, FIG. 2 is a diagram 70 showing the operation of an embodiment of the present invention, and FIG. 3 is a block diagram of essential parts of control. (1)...Water heater body (threshold...bathtub OI/water level switch (c)...Furu switch (e)...mode selection means? Ota Toshibe muscle 3 Figure 114

Claims (1)

[Claims] A device for generating and supplying hot water into a bathtub, which includes a water level detector that detects the water level of the bathtub at least at two points, a water temperature detector that detects the temperature of the water in the bathtub, and a unit that supplies hot water to the bathtub. 1. An automatic hot water supply device for a bath, characterized in that it has a switch, and is provided with mode selection means for automatically selecting an operation mode based on a signal from a water level detector after the switch is turned on.