JPS60186645A - Detecting device of proper temperature of bathtub water - Google Patents

Abstract

PURPOSE:To enable to detect the proper temperature for bathing without agitating the bathtub water by arranging an electronic circuit, which detects the proper temperature and drives an alarming device when the set voltage is exceeded. CONSTITUTION:An upper temperature sensor 1 and a lower temperature sensor 2 in a temperature detecting part A are installed with a proper space apart so as to measure the temperature of bathtub water at the upper portion and the lower portion when the water is heated. An proper temperature detection and alarming device B is provided with amplifiers 3 and 4, which determine voltages by means of the resistances of the temperature sensors 1 and 2. In addition, the amplifier 3 is set so as to generate the voltage 2.5-3.5 times larger than the voltage generated by the amplifier 4, when the resistances of both of the temperature sensors are equal to each other. The respective voltage of the amplifiers 3 and 4 are inputted to an amplifier 5, which outputs the voltage summed up said inputted voltages. A comparator 6 compares the voltage set at a temperature setting circuit 7 with the voltage summed up the voltages of the amplifier 3 and of the amplifier 4 so as to energize a buzzer when the summed-up voltage exceeds the set voltage in order to be able to announce that the proper temperature is reached without agitating bathtub water.

Description

[Detailed Description of the Invention] The present invention heats bath water and allows it to be heated without entering the bath water.
) Relates to a device for detecting the appropriateness of time 71.11.

Such a bath temperature detection device detects the water temperature during waist heating by installing a temperature detection part in the water or on the water surface of the bathtub, and issues an alarm when the water temperature exceeds a certain set temperature.

Conventional bath water temperature detection devices detect the water temperature at a certain point in the bathtub and issue an alarm when the temperature reaches a set temperature of 1-.

For this reason, in the past, when an alarm was issued, it was necessary to stir the water in the R) tank, average the water temperature, and check whether the water temperature reached the bathing temperature.

Furthermore, the temperature of the water poured into the bathtub varies depending on whether it is summer, winter, whether it is heated to some extent by another means such as a solar system, or whether it is not heated.

Even if heating starts from this one state and the set temperature is reached, measuring only at a certain point will not stir the bath water. To find out, I had to stir it several times to find out.

The reason for this is that the water temperature decreases due to the moon current.
There is almost no temperature change in the lower part of the bathtub, and even if it reaches a certain point or the set temperature, if you average the water temperature by stirring, depending on the water temperature when pouring water, you may not be able to obtain the appropriate temperature.

This proposed proposal was made to solve these conventional problems, and its purpose is to provide an appropriate bath temperature detection device that can detect the appropriate bath temperature without stirring the bath water. It's about doing.

That is, in order to achieve this objective, the suitable bath temperature detection device of the present invention detects a part and an upper part of the bath water.
A pair of temperature detection parts that combine the temperature sensors of 1 and 2. The setting sensitivity difference can be adjusted to 2.5 to 3.5 times depending on the water level; and the voltage is determined by the change in resistance value by the temperature sensor of the temperature detection part. an electronic circuit that adds the pair of voltages; compares the added voltage with a preset voltage, detects an appropriate temperature when the set voltage is equal to or exceeds the preset voltage, and activates an alarm device; An electronic circuit that does (i
It has a highly efficient structure.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram showing an appropriate temperature detection device of the present invention.

In 1, A is a temperature detection section, which includes an upper temperature sensor 1 and an upper temperature sensor 2.

The two-part temperature sensor 1 and the lower temperature sensor 2 are installed with an appropriate distance between them so as to measure the upper and lower parts of the bath water when it is heated. Next, 13 is an appropriate temperature detection and alarm device, which has an operational amplifier (hereinafter referred to as "amplifier") 3 that determines the voltage based on the resistance value of the temperature sensor 1.2, and an amplifier 4, and the amplifier 3 is used to detect the upper temperature. The amplifier 4 is connected to the sensor 1 , and the amplifier 4 is connected to the lower temperature sensor 2 .

Further, the two-part temperature sensor 1 and the amplifier 3 are used to measure the temperature of the upper part of the bath water (1), and the temperature sensor 2 and the amplifier 4 are used to measure the temperature of the lower part of the bath water. The amplifier 3 is set to generate a voltage 2.5 to 3.5 times higher than that of the amplifier 4 when the temperature sensor has the same resistance value. This range of setting sensitivity differences corresponds to different user preferences, and is adjustable so that the user can arbitrarily select a sensitivity difference within this range.

Next, the amplifier 5 inputs the voltages of the amplifiers 3 and 1, adds the voltages, and outputs the added voltage.

Next, the comparator 6 compares the voltage set by the temperature setting circuit 7 with the voltage obtained by adding the voltage of the amplifier 3 and the voltage of the amplifier 4, and determines whether the applied voltage is higher than the set voltage. When the temperature reaches -, the buzzer will be energized to let you know that the bath water has reached the appropriate temperature.

In addition, in the case of inclement weather, a diode sensor is used as the temperature sensor.

Figure 2 shows a side sectional view of the appropriate temperature detection device installed in the bath.

Water Absorption ``The bath water j3 taken in from November is heated in the heating section 11 and discharged from the bath water 1o.

The heated bath water 13 starts to stay at the water surface N4 due to the difference in specific gravity, but it remains below the water surface H4.
・Region 1a+n up to near j rises within a range of ±1°C.

Furthermore, in the region 11 from the water absorption 11 of the valley tank to the floor surface N, the water temperature hardly rises by 1] even if the bath water is heated.

1] part temperature sensor 1 of the temperature detection part A is the above-mentioned 1]
The temperature sensor 2 for measuring the temperature of the area 11 is configured to measure the temperature of the region 11.

Next, FIG. 3 (Illuji) shows an experimental example on four sides in a graph during heating of bath water.

In this graph, 1 indicates the dark part of the heating progress, and '1' indicates the progress of the temperature rise. Further, 14 indicates a temperature rise curve near temperature region 11, and 15 indicates a temperature -1 rise curve near temperature region 11. 16 indicates the average temperature when the bath water is stirred.

As a specific usage example, if the lower temperature is 6''C and the upper temperature is 57°C on average, stirring will result in an appropriate temperature of 42°C (Figure 3-A).

Also, when the temperature of the lower part is 8°C, if the temperature of the second part is 56°C on average, stirring will result in an appropriate temperature of 42°C (Figure 3-c7).
.

Also, when the bottom temperature is 28℃, the top temperature is 50' on average.
If it is C, stirring will result in an appropriate temperature of 42°C (Figure 3-8).

Furthermore, if the lower temperature is 21°C and the upper temperature is 52°C on average, stirring will result in an appropriate temperature of 42°C (Figure 3-2).

Furthermore, the setting sensitivity difference for A/B;( and AFF is 2.5:(
, F)11' is the value obtained from experiments.

Although the embodiments of the present invention have been described above, the specific structure of the present invention is not limited to the embodiments described above.

For example, the sensitivity difference may be set between amplifier 3 and amplifier 4, and the sensitivity difference may be increased by 1.'j between the 1" section warmer sensor 1 and the upper temperature sensor 2.

In addition, in this embodiment, a diode sensor was used as the temperature detection section, but it is not limited to this, and for example, the diagram is omitted, or a thermistor, platinum resistor, or bimetal sensor is used instead of the diode sensor of this embodiment. , thermocouples may be used.

In the case shown in Fig. 4, the appropriate temperature detection device 1-7 is made of a material with good thermal conductivity, and the volume of the unit length is the same.
So, -1-1 section temperature detection section 18 or lower temperature detection section 20 approximately 2.5~: (, 5 times longer, upper temperature detection section 1)] and 1ζ section A1 temperature detection section The unit 20 is connected to the internal medium 21 or the moving part 1 through a capillary tube 19, and the thermal expansion of the medium is used as the activation source to activate the alarm device 22. It is also possible to detect the appropriate temperature using this medium expansion type appropriate temperature detection device. In addition, 22 is when the medium expands and generates the specified pressure)
”, an alarm device that detects force and issues an alarm.

[Brief explanation of the drawing]

Figure 1 is an electrical circuit diagram of an embodiment of the present invention, Figure 2 is a side sectional view showing the appropriate temperature detection device installed in a bath, and Figure 3 (Illuji) shows the temperature of the bath water. Temperature measured at the bottom
1 rise graph, 1st figure is another embodiment of the appropriate temperature detection device. Upper temperature sensor 2: Lower temperature sensor 3: Amplifier 4: Amplifier 5: Amplifier 6: Comparator 7: Temperature setting circuit 8: Buzzer 13: Bath water

Claims (1)

[Claims] 1) Above the bath water) 1b and ff1iG detection 4'' Temperature sensor of the moon → Temperature detection unit that combines J; Sensitivity: 1 to 2.1) 3 , S (i
In addition to increasing the temperature of the temperature sensor, it is possible to increase the temperature by 11L by changing the resistance value due to the temperature of the temperature sensor.
・Moon electric gamma-circuit and +l! '1-Electrical j'-circuit that adds voltage λ・j to tγ; Compares the added voltage with the preset voltage, and when it exceeds the preset voltage, detects the appropriate temperature and issues an alarm. An appropriate temperature detection device for a bath, comprising: an electronic circuit for driving the device;