JPS62297658A - Temperature detecting device for bath boiler with hot-water supplying function - Google Patents

Abstract

PURPOSE:To correct hot-water supplying temperature as well as hot-water heating temperature and provide expected set hot-water heating temperature, by a method wherein a means, which corrects signals from a hot-water supplying temperature detector and a bath temperature detector in accordance with the difference of detecting temperatures, is provided and the correction is effected in every additional heating. CONSTITUTION:The set amount of hot-water is supplied into a bathtub 2 through a hot-water delivery pipe 7, thereafter, the supply of the hot-water is stopped and a pump 5 is operated for a given time to circulate the hot-water in the bathtub 2 before starting the operation of additional heating. In this case, the detecting temperatures of a hot-water supplying temperature detector 9 and a bath hot-water temperature detector 10 are equal when the characteristics of these detectors 9, 10 are equal. However, the difference between the detecting temperatures is generated when the characteristics of these detectors 9, 10 are not equal. A microcomputer 16 determines a correcting value from the difference between the detecting temperature in this time. When the output signal of the hot-water supplying temperature detector 9 corresponds to 42 deg.C and the output signal of the bath hot-water temperature detector 10 corresponds to 40 deg.C, for example, the detecting temperature of the bath hot-water temperature detector 10 is corrected by adding a value corresponding to 20 deg.C thereafter.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention Industrial Application Field The present invention automatically supplies hot water to a bathtub according to the set amount of hot water and boiling temperature, and adjusts the temperature of the water in the bathtub and the set temperature. The present invention relates to a temperature detection device for a bathtub with a hot water supply function that performs additional cooking as needed.

2. Description of the Related Art A conventional temperature detection device of this type detects the temperature of a hot water supply temperature detector and a bath water temperature detector, and uses the detected temperature signal as it is for boiling temperature control.

Problems to be Solved by the Invention However, in the above-mentioned conventional configuration, even if the same thermistor or other hot water temperature detector and bath water temperature detector are used, the individual thermistors etc. have variations in their characteristics, making it difficult to supply hot water. The difference between the temperature and the temperature at which you are trying to boil increases.

For example, if the signal from the hot water temperature detector has an error of 12°C, and the signal from the bath water temperature detector has an error of +2°C, the temperature and the boiling temperature will end up changing by 4°C.

In order to solve the above-mentioned problems, the present invention corrects the temperature and the boiling temperature, and provides a means for solving the desired setting boiling problem. b-
1. There is a hot water temperature detector attached to the hot water supply pipe that supplies hot water to the bathtub and a hot water outlet pipe that serves as a circulation hot water pipe for reheating, and a bath water temperature detector attached to the water inlet pipe for circulation during reheating. a detector; a means for measuring a difference between detected temperatures of the hot water supply temperature detector and the bath water temperature detector using the same ambient temperature detected by the hot water temperature detector and the bath water temperature detector as an input signal; The apparatus also includes means for correcting the signal from the bath temperature detector, and is configured to perform the correction each time additional cooking is performed.

Effect: With the above-described configuration, the present invention measures the difference in detected temperatures between the hot water temperature detector and the bath water temperature detector at the same ambient temperature, and corrects the detected temperatures of each other according to the measured temperature difference. , making it possible to provide the desired boiling temperature.

Example FIG. 1 is a block diagram showing an embodiment of the present invention.

In Figure 1, 1 is a bath pot with a hot water supply function, and the hot water supply part 1
It consists of a bathtub part 1b and a bathtub part 1b. 2 is a bathtub. Hot water is supplied to the bathtub 2 as follows. According to the set boiling temperature, hot water is supplied from the hot water supply section 1a through the hot water supply pipe 3 to the bath pot section 1b. In the bathtub portion 1b, the electromagnetic valve 4 is closed and the pump 5 is operated to supply hot water from the hot water outlet pipe 7 to the bathtub 2 via the heat exchanger 6. A hot water temperature detector 9 is installed in the middle of the hot water outlet pipe 7, and converts the temperature of the hot water supplied to the bathtub 2 into an electrical signal, which is then manually transmitted to a control device 11 inside the bath pot 1 with a hot water supply function. ing. Reference numeral 8 denotes a water inlet pipe for circulation for additional cooking; when additional cooking is performed, the solenoid valve 4 is opened, the pump 5 is operated, and the water from the bathtub 2 is passed through the heat exchanger 6
Return from hot water outlet pipe 7. A bath water temperature detector 10 is installed in the circulation water inlet pipe 8. Like the hot water temperature detector 9, the bath water temperature detector 10 also converts temperature into an electrical signal, and its output signal is also input to the control device 11. The control device 11 includes a detected temperature difference measuring means 12 that measures a detected temperature difference that receives the outputs of the hot water supply temperature detector 9 and the bath water temperature detector 10 as input, and a detected temperature difference measuring means 12 that measures a detected temperature difference based on the detected temperature difference. It is composed of correction means 5-2 and 13.

, FIG. 2 shows an example of a specific control device 11.

14 is an analog multiplexer, 15 is an A/D converter,
16 is a microcomputer (CPU).

It is a so-called one-chip microcomputer that has ROM, RAM, and an input/output section.

The output signals from the hot water temperature detector 9 and the bath water temperature detector 10 are sent to an analog multiplexer 14 and an A/D converter 1.
5 to the input/output section of the microcomputer 16. As a result, the temperatures detected by the hot water supply temperature detector 9 and the bath water temperature detector 10 are converted into binary codes and read into the microcomputer 16.

The correction value at the time of additional cooking is determined as follows. After supplying a set amount of hot water to the bathtub 2 through the hot water pipe 7, the supply is stopped,
Before proceeding to the additional cooking operation, the pump 5 is operated for a certain period of time to circulate the hot water in the bathtub 2. At this time, if the characteristics of the hot water supply temperature detector 9 and the bath water temperature detector 10 are equal, the detected temperatures are equal. However, if the characteristics 6-1 of the temperature detector 9 and the bath water temperature detector 10 are not equal, a difference will occur in the detected temperatures. The microcomputer 16 determines a correction value from the difference in detected temperatures at this time. For example, if the output from the hot water temperature detector 9 is equivalent to 42°C, the detected temperature from the bath water temperature detector 10 is 42°C.
If the temperature is equivalent to 0'C, then the detected temperature from the bath water temperature detector 1o may be corrected by adding the equivalent of 2°C.

As described above, according to this embodiment, since the hot water temperature detector 9 and the bath water temperature detector 10 are corrected every time additional heating is performed, the hot water temperature detector 9 and the bath water temperature detector 10 are always corrected. The detected temperatures match.

Effects of the Invention As described above, the temperature detection device of the present invention matches the characteristics of the hot water supply temperature detector and the bath water temperature detector, so that the following effects can be obtained.

(1) Even if there are variations in the temperature detector, the boiling temperature can be accurately controlled to the set temperature.

(2) Since the correction value is determined at a temperature close to the set boiling temperature, there is little error.

(3) Since the correction value is determined each time additional cooking is performed, it is not affected by aging of the temperature sensor.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing an example of a specific control device. 1. Bath pot with hot water supply function, 5. Pump, 7. Outlet pipe, 8. Inlet pipe for circulation, 9. Temperature detector for feeding bow, 1
0... Bath temperature/humidity detector, 12... Detection temperature difference measuring means,
13. Detected temperature correction means.

Claims (1)

[Claims] A hot water temperature detector attached to a hot water supply pipe that serves as both a hot water supply pipe for supplying hot water to the bathtub and a hot water outlet pipe for circulation during additional cooking, and a bath water temperature detector attached to an inlet pipe for circulation during additional heating; means for measuring the difference between detected temperatures of the hot water supply temperature detector and the bath water temperature detector using the same ambient temperature detected by the hot water temperature detector and the bath water temperature detector as an input signal; A temperature detection device for a bathtub with a hot water supply function, comprising means for correcting a signal from a detector, and performing the correction every time additional heating is performed.