JP2000024075A - Foot warm bath device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly reliable hot water temperature display by reducing differences in the display of temperatures of hot water between the actual temperature of hot water inside an inner tub of a foot warm bath device and the one displayed in a temperature display on an outer tub of the device. SOLUTION: This foot warm bath device has a nearly square inner tub 1 made of an electric insulating material whose top is open, a waterproof heat generator 2, an outer lid made of electric insulating material to close the top opening of an outer tub constituting the shell of the device and the inner tub 1 for covering the inner tub 1 and the heat generator 2, a controller to control the heat generation volume of the heat generator 2, and a heat generation volume setting means to set the heat generation volume of the heat generator 2. The heat generator 2, which is saturated at a temperature lower than the heat resisting temperature of the inner tub 1, is mounted on the outer side surface of the inner tub 1. In this device, a thermistor 13 for the hot water display and a thermistor 12 for the hot water temperature control are mounted side by side on a sheet 15 made of highly heat conductive material such as aluminum adhered to the outer side surface of the inner tub 1, and further, a sheet 16 made of the same material as the sheet 15 is adhered over the thermistors to be fixed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water bath exclusively used for warming a foot using hot water.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show a conventional foot warming bath. This is based on the proposal of the present applicant, and the structure is formed of an electrically insulating material such as polypropylene resin, and the outer side surface and the bottom surface of the substantially rectangular inner container 1 having an open upper surface are provided with heat resistant In addition to providing a waterproof heating element 2 that saturates at a temperature equal to or lower than the temperature, the inner container 1 and the heating element 2 are formed of an electrically insulating material such as a polypropylene resin, and the outer container 3 and the inner container 1 forming an outer shell are formed. Controlled by the control unit 4 via a hot water temperature control thermistor 12 which is a hot water temperature control temperature detecting means in which the heating element 2 is mounted on the outer bottom surface of the inner container 1 and is covered with outer lids 7 and 8 closing the upper opening. In addition, the amount of heat generated by the heating element 2 is controlled by the setting unit 5. The temperature of the hot water in the inner container 1 is a thermistor 13 for displaying a hot water temperature which is a temperature detecting means for displaying a hot water temperature attached to the outer side surface of the inner container 1.
And displays it on a display provided at the upper part of the outer container 3 to notify the user. (Japanese Unexamined Patent Publication No. 7-100180) The method of using this is to remove the outer lids 7 and 8, put hot water 9 adjusted to an appropriate temperature in advance in the inner container 1, and then attach the outer lids 7 and 8 to supply power. And set the setting means 5 to the temperature (3
(Approximately 8 ° C. to 45 ° C.) and turn on the power. As a result, the heating element 2 is energized, and continues to generate heat until the control element 4 controls the energizing operation. When the temperature reaches a set temperature, the temperature is detected by the hot water temperature control thermistor 12, and the heating element 2 The operation of interrupting energization is repeated to keep the temperature of hot water 9 constant. The temperature of the hot water 9 is detected by the thermistor 13 for displaying the hot water temperature, and is displayed on the display of the outer container 3 to notify the user.

[0003] A user removes the outer lids 7 and 8 and puts a prescribed amount of bath chemical 10 into hot water 9, and as shown in FIG.
1 and put the feet in the hot water 9 in the inner container 1 and again the outer lid 8
Attach only and keep that state for 15-30 minutes. This allows the user to warm the human body through the skin of the feet by the energy of the hot water 9 and the action of the bath medicine 10, and to transmit the heat of the hot water and the action of the medicine 10 to the whole body by the flow of blood to improve blood circulation and recover from fatigue. , To maintain health.

[0004]

In the conventional apparatus shown in FIGS. 3 and 4, in order to improve the temperature controllability of the heating element 2, a hot water temperature control thermistor 12 is attached to the outer bottom surface of the inner container 1. In addition, the hot water temperature indicating thermistor 13 is attached to the outer side surface of the inner container 1 which is hardly affected by the heat from the heating element 2 and which can easily correlate with the hot water temperature.

However, since the location and conditions for detecting the hot water temperature are different between the outer bottom surface and the side surface of the inner container 1, the temperature control of the hot water 9 by the thermistor 12 for controlling the hot water temperature and the hot water temperature by the thermistor 13 for displaying the hot water temperature are performed. There is a difference in the display, and the user feels uneasy about the hot water temperature display and the set temperature, and if the actual hot water temperature is lower than the hot water temperature display temperature, it will be used accidentally for a long time, causing burns and other safety problems. was there.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned drawbacks, and the temperature detecting means for controlling the hot water temperature and the temperature detecting means for displaying the hot water temperature are installed at the same position on the outer surface of the inner container. By doing so, the error between the hot water temperature control and the hot water temperature display is reduced, and the reliability for the user is improved.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to a first aspect of the present invention, a waterproof material, which is formed of an electrically insulating material and has a substantially rectangular inner container with an open upper surface, saturates at a temperature lower than the heat resistant temperature of the inner container. In addition to providing a heating element, the inner container and the heating element are formed of an electrically insulating material, and are covered with an outer container that forms an outer shell and an outer lid that closes an upper opening of the inner container, and further controls the amount of heat generated by the heating element. And a setting means for setting a heating value of the heating element, wherein the temperature detecting means for controlling the hot water temperature of the heating element and the temperature detecting means for displaying the hot water temperature of the inner container are provided with a sheet having high thermal conductivity. It is installed at the same place on the outer surface of the inner container through the intermediary.

[0008]

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

In FIG. 1, reference numeral 1 denotes an inner container having an upper opening, which is formed in a substantially rectangular shape from an electrically insulating material such as a polypropylene resin having a heat resistant temperature of about 120 ° C., and has a volume suitable for storing both feet and hot water of a user. have. Reference numeral 2 denotes a waterproof heating element, which is composed of a side heating element 2a and a bottom heating element 2b mounted on the outer peripheral side surface of the inner container 1 and at a position slightly lower than a water level line of the inner container 1 along the circumferential direction. And these are wired in series. Reference numeral 3 denotes an outer container, which is formed of an electrically insulating material such as a polypropylene resin and forms an outer shell. Reference numeral 4 denotes a control body which is installed at an appropriate position between the inner container 1 and the outer container 3 as in FIG. Reference numeral 12 denotes a hot water temperature control thermistor which is a hot water temperature control temperature detecting means.
Detects the temperature of the outer side of the container and raises the temperature of the hot water inside the inner container 1 to 38 ° C.
Heating element 2 so that it can be kept at an arbitrary temperature of about 43 ° C.
Serves to control the amount of heat generated.

Reference numeral 5 denotes a temperature setting means such as a touch key for allowing the user to appropriately set the control contents of the control body 4, that is, the temperature of hot water, and an operation section is exposed on the outer shell.

Reference numeral 13 denotes a hot water temperature indicating thermistor, which is a hot water temperature detecting means, which detects the temperature of the outer side surface of the inner container 1 and displays the temperature on a display member 14 such as a 7-segment LED provided on the upper portion of the outer container 3. To display. In the present invention, the thermistor 13 for displaying the hot water temperature and the thermistor 12 for controlling the hot water temperature are arranged side by side on a sheet 15 having a high thermal conductivity such as aluminum foil at the same location on the outer side surface of the inner container 1. Then, a sheet 16 of the same material as the sheet 15 is attached and fixed from above.

Reference numeral 6 denotes an over-temperature prevention device such as a temperature fuse, which is mounted on the outer bottom surface of the inner container 1 and has a control body 4.
Prevents the heating element 2 from overheating as a safety device in the event of a failure.

Reference numerals 7 and 8 denote covers for covering the upper surface of the inner container 1,
Reference numeral 9 denotes hot water put in the inner container 1, and reference numeral 10 denotes bath chemicals dissolved in the hot water 9, which are the same as those in FIG.

According to the present invention, the outer lids 7 and 8 are removed, hot water 9 adjusted to an appropriate temperature is placed in the inner container 1, and the outer lids 7 and 8 are attached. The power supply is connected, and the setting means 5 is set to a temperature desired by the user.

As a result, energization of the heating element 2 is started,
Heat generation is continued until the control body 4 controls the energizing operation. When the temperature reaches a set temperature, the temperature is detected by the thermistor 12 for controlling hot water temperature, and the operation of interrupting the energization to the heating element 2 is repeated to repeat the operation of the hot water 9. Keep the temperature constant. The temperature of the hot water 9 is detected by a thermistor 13 for displaying the hot water temperature, and is displayed on a display 14 of the outer container 3 to notify the user as shown in FIG.

The user removes the outer lids 7 and 8, puts a prescribed amount of the bath medicine 10 into the hot water 9, sits down on a chair (not shown), puts his feet in the hot water 9 in the inner container 1, and again Only the outer lid 8 is attached and kept in that state for 15 to 30 minutes. This can improve the user's own blood circulation. If the operation of the control body 4 becomes defective during this use and the heating element 2 is energized to a temperature equal to or higher than the set temperature, the temperature of the heating element 2 rises, and the temperature of the heating element 2 connected in series with the heating element 2 rises. The temperature of the prevention device 6 rises, and finally the circuit of the heating element 2 is cut off from the power supply to stop the heat generation and keep the safety of the appliance. At this time, if the saturation temperature of the heating element 2 is equal to or lower than the heat-resistant temperature of the inner container 1, the inner container 1 is not damaged even if the overheat prevention device 6 does not operate.
User safety can be ensured.

In the present invention, as described above,
The thermistor 13 for displaying the hot water temperature and the thermistor 12 for controlling the hot water temperature are arranged side by side at the same location on the outer side surface of the inner container 1 on a sheet 15 having a high thermal conductivity such as an aluminum foil. Sheet 1 of the same material as sheet 15
6, the error between the temperature of the hot water 9 in the inner container 1 and the hot water temperature displayed on the display 14 of the outer container 3 is reduced, and a highly reliable hot water temperature display is obtained. be able to.

[0018]

According to the present invention, the thermistor for displaying the hot water temperature and the thermistor for controlling the hot water temperature are installed at the same location on the outer side surface of the inner container via a sheet having high thermal conductivity such as aluminum foil. The error between the temperature of the hot water in the vessel and the hot water temperature displayed on the display of the outer container is reduced, and the user does not have to worry about the hot water temperature display and the set temperature. Is obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of the present invention.

FIG. 2 is an explanatory view of a heating element according to the present invention.

FIG. 3 is a conventional longitudinal sectional view.

FIG. 4 is a side view of a conventional use state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner container 2 Heating element 2a Side heating element 2b Bottom heating element 3 Outer container 4 Control body 5 Setting means 6 Overheat prevention device 12 Temperature detecting means for controlling hot water temperature 13 Temperature detecting means for displaying hot water temperature 15 Thermal conductivity High seat

Claims (1)

[Claims] 1. A waterproof heating element, which is formed of an electrically insulating material and has a substantially rectangular inner container having an open upper surface, is provided with a waterproof heating element which saturates at a temperature lower than the heat-resistant temperature of the inner container. 2), the inner container (1) and the heating element (2) are formed of an electrically insulating material, and the outer container (3) forming the outer shell and the outer lid ( 7), further comprising a control unit (4) for controlling the amount of heat generated by the heating element (2) and setting means (5) for setting the amount of heat generated by the heating element (2). The hot water temperature control means (12) and the hot water temperature display temperature detecting means (13) in the inner container (1) of the sheet (1) having a high thermal conductivity are used.
5) A foot warm bath characterized by being installed at the same place on the outer surface of the inner container (1) via a through-hole.