JP2000350678A - Heated toilet seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heated toilet seat with reduced power consumed for keeping the top surface of the toilet seat at appropriate temperature. SOLUTION: This heated toilet seat includes a heating element 12 positioned on the back face of the top of the toilet seat, and a vacuum heat insulating material 13 with wrapping material of a laminated film positioned below the heating element 12. Heat transfer through an air layer below the heating element 12 is reduced so that the power consumed for keeping the top surface of the toilet seat at appropriate temperature can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating toilet seat for heating a toilet of a Western style toilet.

[0002]

2. Description of the Related Art A conventionally used heating toilet seat has an external appearance as shown in FIG. 7 and a sectional shape as shown in FIG. That is, the heating toilet seat 1 is formed by the toilet seat upper portion 2 and the toilet seat lower portion 3 so that the inside becomes hollow. A heater unit is arranged in this hollow portion. The heater unit has a configuration in which a heating element such as a string heater 4, a temperature detector such as a thermistor, and an overheat prevention device such as a thermostat are bonded to a laminated film 5. O type. The laminated film 5 is formed by laminating a film and an aluminum foil, and the aluminum foil is used for uniformly distributing the temperature of the toilet seat surface.

[0003]

The above-mentioned conventional heating toilet seat has a problem of increasing power consumption.

That is, the heat generated by the heating element constituting the heater unit is transmitted to both the upper part of the toilet seat and the lower part of the toilet seat. The heat generated in the upper part of the toilet seat contributes to the heating of the seat on which the user sits, but the heat generated in the lower part of the toilet seat is used to heat the cavity of the toilet seat. And heat loss. That is, the heating toilet seat of the conventional configuration has a problem in that power for compensating for heat loss is required, and power consumption is increased as described above.

[0005]

SUMMARY OF THE INVENTION The present invention comprises a heating element disposed on the upper back surface of a toilet seat, and a vacuum heat insulating material having a laminated film disposed below the heating element as an outer packaging material. The heating toilet seat can suppress the heat transfer through the air layer and reduce the power consumption for maintaining the upper surface of the toilet seat at an appropriate temperature.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention described in claim 1 comprises a heating element disposed on an upper back surface of a toilet seat, and a vacuum heat insulating material having a laminated film disposed below the heating element as an outer package.
The heating toilet seat can suppress the heat transfer through the air layer below the heating element and reduce the power consumption for maintaining the upper surface of the toilet seat at an appropriate temperature.

According to the second aspect of the present invention, the laminated film has a metal foil so that the upper portion of the toilet seat is heated by efficiently reflecting the radiant heat and the temperature of the upper portion of the toilet seat is kept uniform. .

According to a third aspect of the present invention, the vacuum heat insulating material has a groove or a hole in which the heating element is buried in the core material, so that the heat generated by the heating element can be efficiently transmitted to the upper part of the toilet seat, and the heating is simple in construction. Toilet seat.

According to a fourth aspect of the present invention, the upper portion of the toilet seat is efficiently heated by the metal foil provided on the surface of the heating element of the laminated film, the temperature of the upper portion of the toilet seat is kept uniform, and the opposite side of the heating element surface of the laminated film. With the metal vapor deposition layer provided on the surface, the heat generated by the heating element can reduce the amount of heat transmitted from the vacuum heat insulating material to the lower part of the toilet seat, and the heating toilet seat can perform more efficient heating.

[0010] According to a fifth aspect of the present invention, the amount of heat transmitted to the lower portion of the toilet seat is further reduced by forming the metal vapor deposition layer provided on the surface of the laminated film opposite to the surface of the heating element from metal oxide. It is a heating toilet seat that can be heated more efficiently.

[0011]

(Embodiment 1) A first embodiment of the present invention will be described below. FIG. 1 is a cross-sectional view illustrating a configuration of the heating toilet seat of the present embodiment. The heating toilet seat 10 is disposed on a surface of a toilet of a Western-style toilet (not shown). Further, the toilet seat upper portion 2 and the toilet seat lower portion 3 are formed so that the inside becomes hollow. In this cavity, a heater unit constituted by a heater 11 and a laminated film 12 and a vacuum heat insulating material 13 arranged below the heater unit are arranged.

The heater unit has a configuration in which a heater 11, a temperature detector such as a thermistor (not shown), and an overheat prevention device such as a thermostat are bonded to a laminated film 12, and the overall shape is a horseshoe. Type or O type. The heater 11 uses a string heater in which a resistance heating wire of a copper-nickel alloy is covered with silicon. The vacuum heat insulating material 13 has a configuration shown in FIG. That is, it is composed of the laminated film 14 and the heat insulating core 15. In the present embodiment, as the heat insulating core material 15,
A material obtained by molding a fine powder of silica or calcium silicate with a molding material such as a polyurethane foam is used. The laminated film 14 has a configuration as shown in FIG. That is, it has a laminated structure in which the metal foil layer 17 is covered with the protective layer 16 and the heat welding layer 18. In this embodiment, an aluminum foil having a thickness of 6 μm is used as the metal foil layer 17. The protective layer 16 has a thickness of 15 μm
Use nylon film. The non-stretched polypropylene having a thickness of 50 μm is used for the heat welding layer 18.
The two laminated films are heat-sealed in a bag shape to produce an O-shaped bag, and then the heat insulating core material 15 is put into the bag so as to have a thickness of about 7 mm, and the air pressure in the bag is reduced. 0.5
After evacuating to a pressure equal to or less than Torr, the mouth of the bag is heat-welded to form a vacuum heat insulating material 13. The operation of the present embodiment in which the vacuum heat insulating material thus obtained is adhered and fixed to the lower portion of the heater unit will be described below. When a switch (not shown) is turned on and the heater 11 is energized, the amount of heat generated by the heater 11 is transmitted to the upper part of the heating toilet seat 10 via the laminated film 12. The laminated film 12 is formed by laminating a film and an aluminum foil. Since the aluminum foil has a high thermal conductivity, it acts to uniformly distribute the temperature of the toilet seat surface as described in the conventional example.

At this time, heat conduction is performed below the heater 11 through the vacuum heat insulating material 13. That is, since the vacuum heat insulating material 13 is used, substantially no heat conduction is performed to the lower portion of the heater 11. The reason will be described below. The lower portion of the heater 11 has a cavity of about 10 to 40 mm as described in the conventional example. The thermal conductivity of the air existing in this cavity is approximately 0.03 W / mK in a stationary state, and is a high-performance heat insulator. Actually, the heat generated by the heater 11 and the heater 1
Since the convection is generated by the radiant heat of the aluminum foil of the laminated film 12 disposed on the upper part of 1, the thermal conductivity is larger than the above value.

In this regard, in this embodiment, a vacuum heat insulating material 13 is disposed below the heater 11. The vacuum heat insulating material 13 is
As described above, a heat insulating core material 15 in which a fine powder of silica, calcium silicate or the like is molded using a molding material such as a polyurethane foam is formed into a bag using two laminated films 14, The bag is evacuated so that the air pressure in the bag becomes 0.5 Torr or less, and then the mouth of the bag is heat-welded. The thermal conductivity of the vacuum heat insulating material 13 is approximately 0.0 when the internal pressure is 0.1 Torr.
06 to 0.008 W / mK. That is, the thermal conductivity is 1/20 or less of the thermal conductivity of the air layer.

Therefore, according to this embodiment, the amount of heat transmitted to the lower portion of the heater 11 can be made very small,
1 can be effectively used. That is, a heating toilet seat that can reduce power consumption for maintaining the upper surface of the toilet seat 10 at an appropriate temperature is realized.

In the above description, the laminated film 12 is used above the heater 11, but the laminated film 12 is not always necessary.

In the above description, the laminated film 14 is
Although it is described as having the metal foil layer 17, the metal foil layer 17 is not always necessary. The reason why the metal foil layer 17 is used is to prevent the degree of vacuum inside the vacuum heat insulating material 13 from being reduced by air invading from the outside even when used for a long time, for example. In other words, it is for maintaining the degree of vacuum inside. The protective layer 16 is for preventing the metal foil layer 17 from peeling off when subjected to, for example, a mechanical shock.

(Embodiment 2) Next, a second embodiment of the present invention will be described. FIG. 4 is a cross-sectional view illustrating the configuration of the heating toilet seat of the present embodiment. In this embodiment, a vacuum heat insulating material 24 having a heater 11 on its surface is arranged in a cavity formed by an upper toilet seat and a lower toilet seat. The vacuum heat insulating material 24 has a structure of the heat insulating core material 15 having a groove or a hole 15a on the surface in which the heater 11 is buried.

The operation of this embodiment will be described below. In this embodiment, the heater 11 is buried in the groove or hole 15a. For this reason, the heat generated by the heater 11 is prevented from being transmitted downward by the vacuum heat insulating material 24 having extremely low thermal conductivity. That is, most of the heat generated by the heater 11 is transmitted to the upper part of the toilet seat. At this time, as shown in FIG. 3, the metal foil layer 17 made of aluminum foil used as the outer packaging material of the vacuum heat insulating material 24 makes the surface temperature of the upper part of the toilet seat uniform, and the heater 11 Radiant heat is reflected to information.

Therefore, according to the present embodiment, it is possible to realize a heating toilet seat capable of performing highly efficient heating, and to omit the aluminum foil provided in the conventional heater unit.
The heating toilet seat having a simple configuration can be realized.

(Embodiment 3) Next, a third embodiment of the present invention will be described. FIG. 5 is a cross-sectional view showing the configuration of the laminated film used for the heating toilet seat of the present embodiment. The laminated film 23 of this embodiment has a configuration in which a metal foil layer 20 made of metal foil is provided on the heating element surface, and a metal deposition layer 21 is provided on the other surface.

When the metal foil layer 20 is made of aluminum foil, the thickness is about 5 to 30 μm, whereas when the metal is deposited, the thickness may be reduced to 0.02 to 0.06 μm. it can. That is, the heat conduction in which the heat generated by the heater is transmitted downward from the surface of the laminated film can be suppressed to 1/100 or less.

As described above, according to the present embodiment, a heating toilet seat capable of efficiently transmitting the heat generated by the heating element to the surface of the toilet seat is realized.

At this time, in this embodiment, the metal used for vapor deposition is a metal oxide. Since the metal oxide has a lower thermal conductivity than the metal, it is possible to further reduce the heat conduction in which the heat generated by the heater is transmitted downward from the surface of the laminated film. Therefore, a heating toilet seat that can more efficiently transmit the heat generated by the heating element to the surface of the toilet seat is realized.

(Experimental Examples) The results of experiments for verifying the effects of the above embodiments will be described below. The apparatus used in this experiment was constructed by bonding the vacuum heat insulating material described in the first, second, and third embodiments to the lower portion of the heater unit and fixing the same. The power is supplied so that the surface temperature on the side becomes 37 ° C. on average, and the power at that time is measured. At this time, the temperature was measured by equally measuring eight points at a point approximately 50 mm from the center cavity of the O-shape. In addition, what is given as a comparative example is a conventional heating toilet seat. The results are shown in (Table 1).

[0026]

[Table 1]

The following points become clear from Table 1.

1. By using vacuum insulation,
Power consumption can be reduced by 10%.

2. By using metal foil only on the surface of the vacuum heat insulating material that contacts the heater, the power consumption can be further reduced.

3. By using a metal vapor-deposited layer on the surface not in contact with the heater, a greater power reduction can be obtained than with a metal foil.

[0031]

According to the first aspect of the present invention, there is provided a structure including a toilet seat, a heating element disposed on the upper back surface of the toilet seat, and a vacuum heat insulating material having a laminated film disposed below the heating element as an outer packaging material. Accordingly, a heating toilet seat capable of reducing power consumption for maintaining an upper surface of the toilet seat at an appropriate temperature is realized.

According to a second aspect of the present invention, the laminated film has a structure having a metal foil, and realizes a heating toilet seat that efficiently reflects radiant heat to heat the upper portion of the toilet seat and that maintains the temperature of the upper portion of the toilet seat uniformly. Things.

According to the third aspect of the present invention, the vacuum heat insulating material has a groove or a hole in which the heating element is buried in the core material, so that the heat generated by the heating element can be efficiently transmitted to the upper part of the toilet seat. This realizes a simple heating toilet seat.

According to a fourth aspect of the present invention, the laminated film has a structure in which a metal foil is provided on the heating element surface and a metal vapor deposition layer is provided on the other surface. An object of the present invention is to realize a heating toilet seat capable of reducing the amount of heat transferred and performing more efficient heating.

The fifth aspect of the present invention is to realize a heating toilet seat in which the amount of heat transmitted to the lower portion of the toilet seat can be further reduced and the heating can be performed with higher efficiency by using metal as a metal oxide. .

[Brief description of the drawings]

FIG. 1 is a sectional view showing a configuration of a heating toilet seat according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a configuration of a vacuum heat insulating material used in the heating toilet seat.

FIG. 3 is a cross-sectional view showing a configuration of a vacuum heat insulating material used for a heating toilet seat according to a second embodiment of the present invention.

FIG. 4 is a sectional view showing a configuration of a heating toilet seat according to a third embodiment of the present invention.

FIG. 5 is a sectional view showing a configuration of a vacuum heat insulating material used for a heating toilet seat according to a fourth embodiment of the present invention.

FIG. 6 is a perspective view showing the appearance of a conventional heating toilet seat.

FIG. 7 is a sectional view showing the internal structure of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Heating toilet seat 11 Heater 12 Laminated film 13 Vacuum heat insulating material 14 Laminated film 15 Heat insulating core material 15a Groove or hole 16 Protective layer 17 Metal foil layer 18 Heat welding layer 20 Metal foil layer 21 Deposition layer 23 Laminated film 24 Vacuum heat insulating material

Continuation of the front page (72) Inventor Mitsuhiro Sano 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 2D037 AD03 AD08

Claims (5)

[Claims] 1. A heating toilet seat comprising: a toilet seat; a heating element disposed on an upper back surface of the toilet seat; and a vacuum heat insulating material having a laminated film disposed below the heating element as an outer packaging material. 2. The heating toilet seat according to claim 1, wherein the laminated film has a metal foil. 3. The heating toilet seat according to claim 1, wherein the vacuum heat insulating material has a groove or a hole in which the heating element is buried in the core material. 4. The heating toilet seat according to claim 1, wherein the laminated film has a metal foil on the surface of the heating element and has a metal deposition layer on the other surface. 5. The heating toilet seat according to claim 3, wherein the metal is a metal oxide.