JP3000894U - Non-contact bath water average temperature detector - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain the notification information by indirectly and accurately detecting the average temperature of the bath water inside the bathtub without installing it directly inside the bathtub. [Structure] The temperature of hot water flowing from the bath kettle 2 to the bath 1 is indirectly detected by a high temperature side temperature detection sensor 7 provided in close contact with the high temperature water passage 3 provided outside the bath 1. on the other hand,
The low-temperature side detection sensor 8 provided in close contact with the low-temperature water passage 4 side indirectly detects the temperature of hot water flowing from the bathtub 1 to the bathtub 2. These values are input to the average temperature calculation means 10, the normal temperature value is calculated, and compared with the preset temperature value set by the preset temperature comparison means 11, and when both values are equal, the notification information output means 12 To output a signal,
Activate the alarm etc.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY According to the present invention, the average temperature of the bath water is indirectly detected outside the bathtub without directly inserting a thermometer into the bathwater of the bathtub for measurement, and alarm information or other notification information can be output. The present invention relates to a non-contact bath water average temperature detecting device.

[0002]

[Prior art]

 Various devices have been developed to detect the average temperature of bath water in a bathtub. For example, in Japanese Utility Model Laid-Open No. 51-139684, a heat-sensitive body formed of a material having good thermal conductivity is arranged in the depth direction of a bath, and the heat-sensitive body is arranged so as to be in close contact with the heat-sensitive body at substantially the center of the heat-sensitive body. A bath thermometer is disclosed in which an element is attached and the temperature of the hot water in the bathtub is detected by the temperature sensed by the thermosensitive element. Further, in Japanese Utility Model Laid-Open No. 60-179831, a first temperature detecting sensor and a second temperature detecting sensor are arranged in the upper and lower parts of the water in a bath, respectively. A bath that outputs an average value based on the temperature detected by the temperature detection sensor, compares the average value with a preset reference temperature set value, and outputs notification information when both values are equal. A temperature notification device is disclosed.

[0003]

[Problems to be Solved by the Invention]

 However, in the technique disclosed in Japanese Utility Model Application Laid-Open No. 51-139684, since the heat-sensitive element is arranged at a substantially intermediate position of the heat-sensitive body inserted in the bathtub, the average temperature may be different due to the fluctuation of the amount of bath water. Can not be detected. That is, when the amount of bath water is larger than the reference amount of water, the thermosensitive element is fixed, and therefore the position of the heat sensitive element is relatively lower than the middle position of the bath water. Therefore, the average temperature lower than the true average temperature is detected.

On the other hand, when the amount of bath water is less than the reference, the position of the heat sensitive element is relatively higher than the middle position of the wind water. Therefore, the average temperature higher than the true average temperature is detected. In order to avoid these problems, it is necessary to move the position of the heat-sensitive element, and thus the heat-sensitive body, up and down in the bathtub and adjust the position according to the bath water level each time.

Further, since the switch casing having the heat sensitive body, the heat sensitive element, the thermo switch, etc., and the lead wires inserted into the tube are directly arranged in the bathtub, the occupied area in the bathtub is narrowed. However, especially if the size of the bathtub is small from the beginning, it may be an obstacle for the bather, and in some cases, the device itself may be deformed or damaged in a short time by hitting the bather's limbs.

Similarly, the technique disclosed in Japanese Utility Model Laid-Open No. 60-179831 also includes a first sensor for detecting the temperature of the upper portion and a second sensor for detecting the temperature of the lower portion, and The float, cord, etc. of the alarm device are directly placed in the bathtub. For this reason, the occupied area of the bathtub is reduced as in the above, and it becomes an obstacle for the bather. Furthermore, the structure is complicated and cannot be manufactured at low cost. In addition, both were installed directly in the bathtub, so maintenance and management were troublesome, and there were problems such as frequent failures.

[0007]

[The purpose of the device]

 The present invention has been made to solve the above problems, and indirectly and accurately detects the average temperature of bath water inside the bathtub without directly installing it inside the bathtub. The object is to provide a non-contact bath water average temperature detection device that obtains notification information by using the above method.

[0008]

[Means for solving problems]

 The non-contact bath water average temperature detecting device of the present invention is a circulating bath kettle in which a bathtub and a bath kettle are connected via a high-temperature water passage and a low-temperature water passage, and the bathtub is in close contact with the high-temperature water passage. Of the high temperature side temperature detection sensor provided outside of the bath, the low temperature side temperature detection sensor closely attached to the low temperature water passage and provided outside the bath, and detected by the high temperature side temperature detection sensor and the low temperature side temperature detection sensor. And an average temperature calculation means for calculating an average temperature value by inputting each temperature value, a set temperature comparison means for comparing the average temperature value calculated by the average temperature calculation means with a preset temperature value, It is characterized by further comprising: information output means for comparing the average temperature value and the set temperature value by the set temperature comparison means and outputting the notification information when both values are equal.

[0009]

[Action]

 In the non-contact type bath water average temperature detecting device of the present invention, the temperature of the hot water flowing from the bath kettle to the bathtub is indirectly controlled by the high temperature side temperature detection sensor provided in close contact with the hot water passage side provided outside the bathtub. To detect. On the other hand, the low-temperature side detection sensor, which is also closely attached to the low-temperature water passage side, indirectly detects the temperature of the hot water flowing from the bathtub to the bathtub. These values are input to the average temperature calculation means, the normal temperature value is calculated, and the set temperature value is compared with the preset temperature value set by the set temperature comparison means. Outputs a signal and activates an alarm etc. Moreover, the switch of the burner of the bathtub is turned on / off based on the signal from the notification information output means as needed.

[0010]

【Example】

 Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view showing a schematic configuration of a non-contact bath water average temperature detecting device of the present invention. In the figure, reference numeral 1 denotes a bathtub, and the bathtub 1 and bathtub 2 are connected by a high-temperature water passage 3 and a low-temperature water passage 4. The high temperature water passage 3 and the low temperature water passage 4 are generally formed of metal pipes. 5 is bath water filled in the bathtub 1. The bath water 5 naturally circulates between the bath 1 and the bath kettle 2 through the high-temperature water passage 3 and the low-temperature water passage 4 by the combustion of the burner 6 of the bath kettle 2, and gradually warms up. In the so-called circulating bathtub as described above, a temperature detection sensor is arranged outside the bathtub 1 in order to detect the average temperature of the bath water 5 in the bathtub 1.

That is, the high temperature side temperature detection sensor 7 is installed in close contact with the high temperature water passage 3 connecting the bath 1 and the bath kettle 2. Further, a low temperature side temperature detection sensor 8 is installed in close contact with the low temperature water passage 4. The surroundings of these temperature detecting sensors 7 and 8 are covered with a heat insulating material 9 in order to avoid the disturbing action of the outside air and the radiant heat from the bathtub 2. An average temperature calculating means 10 is connected to the temperature detecting sensors 7 and 8, and the calculating means 10 calculates the temperature value detected by the high temperature side temperature detecting sensor 7 and the temperature value detected by the low temperature side temperature detecting sensor 8. Input to and calculate the average temperature. A set temperature comparison means 11 is connected to the average temperature calculation means 10 and compares a preset set temperature value of the bather's preference with the average temperature value. The information output means 12 is connected to the set temperature comparison means 11, and when the set temperature value and the average temperature value are not equal to each other, for example, a buzzer sounds to output the notification information.

The information output means 12 may be taken out as a signal of an appropriate shape and sent to the temperature control means 13 to control the burner 6 of the bathtub 2 on / off.

FIG. 2 shows an embodiment of the control circuit CU in the non-contact bath water average temperature detection device of FIG. In the figure, 14 is a balanced bridge circuit, which forms a bridge circuit by the high temperature side temperature detection sensor 7, the low temperature side temperature detection sensor 8 and the resistors R1 and R2. M, which is connected in series with the resistor R6, is a meter that makes it possible to visually check the detected temperature. Reference numeral 15 is a setting device for temperature adjustment in which diodes are connected in series.

That is, for example, the tap is manually changed and adjusted according to a preset temperature such as heat 43 ° C., just 40 ° C., and lower 38 ° C. Each of TR1 and TR2 is a transistor that obtains an output from the balanced bridge circuit 14 and performs a switching function. In addition, BZ is a buzzer, and when the temperature value set by the setter 15 and the detected average temperature value match and the balance bridge 15 outputs, the power from the batteries DC1 and DC2 is supplied. Then, the notification information is issued. In addition, P. C is a photo coupler, and the photo coupler P.P. It is for use as a temperature control means such as taking out to the outside via C and controlling the burner 6 of the bathtub 2. SW1 and SW2 are switches for turning on the power.

The above control circuit is an embodiment, and the average temperature value is calculated by inputting the temperature value detected by the high temperature side temperature detection sensor 7 and the low temperature side temperature detection sensor 8 provided outside the bathtub 1. If it is a control circuit that can be calculated mechanically or mechanically, and when it is compared with a preset temperature value and both values are equal, the control circuit can obtain the notification information that sounds the buzzer, etc. good. In addition, the use of a microcomputer enables more precise control.

Next, FIG. 3 is a graph showing changes in the water temperature of the bath water 5 over time. In the figure, the horizontal axis represents elapsed time (minutes) and the vertical axis represents water temperature (° C). Further, P0 is the initial temperature, P0-P1-P3 is the temperature locus traced with time on the low temperature side, P0-P3-P5 is the temperature locus traced with time on the high temperature side, and P0-P2-P4 is the average temperature. Is a temperature locus traced over time. The average temperature at each elapsed time is calculated by the following equation. That is, for example, the average temperature after 45 minutes (P4) = high temperature side temperature (P5) + low temperature side temperature (P3) / 2 is calculated.

[0017]

[Effect of device]

 Since the present invention is provided with the temperature detecting means outside the bathtub as described above, it has the following specific effects. (1) Since the temperature detecting means does not directly contact the bath water, the accurate average temperature can always be indirectly detected outside without being influenced by the water level in the bathtub. (2) Similarly, since the temperature detecting means does not come into direct contact with the bath water, it is not necessary to have a watertight structure, and no rust prevention treatment is required, so that the manufacturing cost is low. (3) Since it is not necessary to insert or install any device or component in the bathtub, the occupied area in the bathtub is not narrowed. (4) Since it is installed outside the bathtub, it does not become an obstacle for the bather, and it is not necessary to consider deformation, failure, etc. due to the contact of the bather. (5) Since it is installed outside the bathtub, maintenance and management of the device is easy, and since it does not come into direct contact with bath water, it can be expected to have a long life. (6) Since the temperature detecting sensor is covered with the heat insulating material, disturbance of the outside air, radiant heat from the bathtub, etc. can be avoided, and an accurate average temperature can be detected.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a schematic configuration of a non-contact bath water average temperature detecting device of the present invention.

FIG. 2 is a diagram showing an embodiment of a control circuit of the detection device.

FIG. 3 is a graph in which the loci followed by the average temperatures of the high temperature water passage side, the low temperature water passage side, and both are plotted.

[Explanation of symbols]

 1 Bathtub 2 Bath Kettle 3 High Temperature Water Passage 4 Low Temperature Water Passage 5 Bath Water 6 Burner 7 High Temperature Side Temperature Detection Sensor 8 Low Temperature Side Temperature Detection Sensor 9 Insulation Material 10 Average Temperature Computation Means 11 Set Temperature Comparison Means 12 Information Output Means 13 Temperature Control Means 14 Balanced bridge circuit CU Control circuit BZ buzzer

Claims (2)

[Scope of utility model registration request] 1. A circulating bath kettle in which a bathtub and a bath kettle are connected via a high-temperature water passage and a low-temperature water passage, and a high-temperature-side temperature detection device provided outside the bathtub in close contact with the high-temperature water passage A sensor, a low temperature side temperature detection sensor provided outside the bath in close contact with the low temperature water passage, and an average temperature with each temperature value detected from the high temperature side temperature detection sensor and the low temperature side temperature detection sensor as input. An average temperature calculating means for calculating a value; a set temperature comparing means for comparing the average temperature value calculated by the average temperature calculating means with a preset temperature value; and the average temperature value by the set temperature comparing means. And a set temperature value are compared, and information output means for outputting notification information when both values are equal, and a non-contact type bath water average temperature detecting device. 2. The non-contact type bath water average temperature detection device according to claim 1, wherein the outer circumferences of the high temperature side temperature detection sensor and the low temperature side temperature detection sensor are surrounded by a heat insulating material.