JP4715885B2 - Insulation equipment - Google Patents

Description

  The present invention relates to an energy-saving heat-insulating device such as a rice cooker, a heat-retaining cooker, a water heater or a water heater equipped with a heat insulating material.

Conventionally, in this type of heat insulating equipment, in an electric water heater, a heat insulating material is installed outside the container to suppress the amount of heat leaking from the container and to reduce the amount of heat retained during heat insulation ( For example, see Patent Document 1).
Japanese Patent Laid-Open No. 11-290210

  However, in the said conventional structure, since the heat insulating material only covered the outer periphery of the container, there existed a subject that heat leaked from the side surface of the sealing part of a cover body and a container.

  This invention solves the said conventional subject, and it aims at providing the heat insulation apparatus with a high energy-saving effect which reduces significantly the heat leak from the side surface of the sealing part of a cover body and a container.

In order to solve the above-described conventional problems, a heat insulating device of the present invention includes a bottomed cylindrical container that accommodates an object to be stored, a heating unit that heats and retains the object to be stored in the container, A lid that covers the upper opening, a cylindrical heat insulating material that is provided with a gap in the outer periphery of the container, a convection prevention member that is disposed in a part of the gap, and a body that is located on the outer periphery of the heat insulating material The heat insulating material is made of a vacuum heat insulating material having a vacuum part, and a seal part between the container and the lid is provided at a position below the upper end part of the container, and the upper end of the vacuum part is It is arranged above the seal part, and the lid and the seal part of the container are covered with a highly heat-insulating vacuum part, so heat leakage from the side of the seal part is reliably reduced, and a small amount of heat is kept. It is possible to keep the objects in the container warm with the amount of electric power, which has a high energy-saving effect. It can be.

  The heat insulating device of the present invention can greatly reduce heat leakage from the side surfaces of the seal portion of the container and the lid, and can have a high energy saving effect.

1st invention is a bottomed cylindrical container which accommodates a to-be-contained object, the heating means which heats / holds the to-be-contained object in the said container, the cover body which covers the upper opening part of the said container, and the said container A cylindrical heat insulating material provided with a gap in the outer peripheral portion thereof, a convection preventing member disposed in a part of the gap, and a body located in the outer periphery of the heat insulating material, wherein the heat insulating material has a vacuum portion. A vacuum heat insulating material having a seal part between the container and the lid provided at a position below the upper end part of the container, and an upper end of the vacuum part disposed above the seal part. Because the lid and the container seal are covered with a highly heat-insulating vacuum part, heat leakage from the side of the seal is reliably reduced, and the contents in the container are kept warm with a small amount of heat. It can be made high energy-saving effect.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Reference Example 1)
1 and 2 illustrate an electric water heater which is a heat insulating device in Reference Example 1 of the present invention.

  As shown in the figure, this electric water heater includes a bottomed cylindrical container 3 that accommodates an object (water) 2, a heating means 6 that heats and retains the object 2 in the container 3, and a thermistor. A control circuit 10 for controlling the temperature of the object 2 in the container 3 by an electric signal from the temperature sensing element 7, and a lid body 8 that covers the upper opening of the container 3 so as to be openable and closable. , A lid heat insulating material 9 such as foamed polypropylene built in the lid body 8, a cylindrical heat insulating material 11 located on the outer periphery of the container 3, a body 1 located on the outer periphery of the heat insulating material 11, And an upper frame 4 placed thereon.

  The opening periphery of the container 3 is mounted on the upper frame 4, and an elastic packing such as silicone rubber is applied between the opening periphery of the container 3 and the lid 8 to form the seal portion 5. Is.

Moreover, although the structure in particular is not limited, the said heat insulating material 11 uses the heat insulating material 11 as a vacuum heat insulating material in this reference example. This is because the vacuum part 12 is covered with an outer bag 13, and the vacuum part 12 is filled with an inorganic powder such as fumed silica or perlite, or an inorganic fiber such as glass wool, a hard urethane foam, or a core material such as foamed phenol resin. The outer bag 13 is made of a resin film having gas barrier properties, a resin / metal foil laminate film (for example, nylon, PET, aluminum foil, unstretched polypropylene), and the like, and is sealed by reducing the inside. Usually, since a vacuum heat insulating material becomes flat form, in order to make the mounting | wearing to the container 3 possible, it is processed into the cylinder shape using 3 rollers.

  Here, the heat insulating material 11 has an upper end disposed above the seal portion 5 between the container 3 and the lid 8. Further, the upper end portion of the heat insulating material 11 is disposed above the lower surface 8 a of the lid 8. Furthermore, the upper end portion of the heat insulating material 11 is disposed above the lower surface of the cover heat insulating material 9 built in the cover body 8.

  Note that a gap 14 is provided between the heat insulating material 11 and the container 3, and a convection preventing member 16 is disposed in a part thereof. Here, foamed melamine or the like is used as the convection preventing member 16, but any heat insulating material having heat resistance of 100 ° C. or higher may be used.

  Next, the operation of this reference example will be described.

  In the illustrated electric water heater, as is generally well known, the lid 8 is opened, the object (water) 2 is placed in the container 3, the object 2 is heated and kept warm, and the pump is driven. The hot water can be discharged appropriately.

  Here, in this reference example, during the heat insulation of the object 2, heat is dissipated from the side surface of the container 3 and from above the container 3 by the heat insulating material 11 disposed on the outer peripheral portion of the container 3 and the lid heat insulating material 9 inside the lid 8. Can be suppressed. If the heat insulating material 11 is a vacuum heat insulating material (thermal conductivity of the vacuum heat insulating material = 0.003 to 0.008 W / mK), the amount of electric power during heat insulation can be greatly reduced, and the cost is high, and the product weight is increased. This makes it possible to improve the assembly workability and usability.

  And the upper end part of the heat insulating material 11 is arrange | positioned above the seal | sticker part 5 of the container 3 and the cover body 8, and has covered the outer periphery of the seal | sticker part 5. FIG. Further, the upper end portion of the heat insulating material 11 is disposed above the lower surface 8 a of the lid body 8 and further above the lower surface of the lid heat insulating material 9 built in the lid body 8. Thereby, since the lid 8 and the seal portion 5 of the container 3 are only in contact with the packing, heat is likely to leak, but the outer periphery is covered with the heat insulating material 11, and the lid 8 and the lid heat insulating material 9 By covering the periphery, the seal portion 5 is sandwiched between the outer periphery and the inner periphery, heat leakage from the seal portion 5 can be reduced, and the amount of heat retained in the container 3 can be reduced with a smaller amount of heat retention than in the conventional configuration. The contents 2 can be kept warm.

  Further, a convection preventing member 16 is disposed between the heat insulating material 11 and the container 3, and a gap 14 is provided between the heat insulating material 11 and the container 3, so that the heat insulating material 11 and the container 3 are not in direct contact with each other, and air Since heat moves through the layers, the heat insulation effect can be further improved. In this case, there is no direct heat transfer to the heat insulating material 11, and the surface temperature of the heat insulating material 11 is also lowered, so that the amount of heat conduction on the surface of the heat insulating material can also be reduced. Therefore, when the vacuum heat insulating material is used, the amount of intrusion gas is reduced due to a decrease in the average temperature, so that the reliability over time of the vacuum heat insulating material is improved and the deterioration of the energy saving performance can be reduced.

  In this reference example, the vacuum heat insulating material is composed of the outer bag 13 and the vacuum portion 12 filled with the core material. However, the vacuum heat insulating material is not particularly limited, and a double layer sealed by reducing the pressure inside. The same effect can be obtained even with a heat insulating material made of stainless steel. In addition, the shape of the container 3 is preferably a columnar or polygonal column shape, and the heat insulating material 11 is preferably a columnar or polygonal column shape along the container 3, but is not particularly limited.

  In this reference example, an electric water heater has been exemplified as the heat insulating device, but it is not particularly limited to this, and may be a rice cooker, a heat-retaining cooker, a water heater, etc., and is not limited to an electric / gas device. It can be applied to any device such as a hot water storage container for the purpose of keeping heat, and the heat keeping effect can be improved.

(Reference Example 2)
FIG. 3 shows a main part of an electric water heater in Reference Example 2 of the present invention. The same elements as those in Reference Example 1 are denoted by the same reference numerals, and description thereof is omitted.

  In this reference example, the heat insulating material 11 is composed of a first heat insulating material 11 a and a second heat insulating material 11 b, and the first heat insulating material 11 a is positioned below the seal portion 5 between the container 3 and the lid 8. The second heat insulating material 11b is disposed from a position higher than the seal portion 5 between the container 3 and the lid 8 to a lower position overlapping the upper end portion of the first heat insulating material 11a.

  Accordingly, the first and second heat insulating materials 11a and 11b insulate the lower position on the seal portion 5 between the container 3 and the lid body 8 that is most likely to leak heat, so that the heat insulating effect can be improved. The to-be-contained object 2 in the container 3 can be kept warm with a small amount of heat retaining power.

(Reference Example 3)
FIG. 4 shows a main part of an electric water heater in Reference Example 3 of the present invention. The same elements as those in Reference Examples 1 and 2 are denoted by the same reference numerals and description thereof is omitted.

  In this reference example, the 1st heat insulating material 11a and the 2nd heat insulating material 11b which comprise the heat insulating material 11 provide the folding | returning part 15 with which the core material is not filled, and are integrated. And the 1st heat insulating material 11a is arrange | positioned in the downward position rather than the seal part 5 between the container 3 and the cover body 8, and the 2nd heat insulating material 11b is above the seal part 5 between the container 3 and the cover body 8. It arrange | positions from the position to the downward position which overlaps with the upper end part of the 1st heat insulating material 11a.

  Thereby, the 1st, 2nd heat insulating material 11a, 11b is integrated, the handling of the heat insulating material 11 is easy, and, similarly to the reference example 2, the heat insulating effect can be improved, and with a small amount of heat insulation power. The to-be-contained object 2 in the container 3 can be kept warm.

(Reference Example 4)
FIG. 5 shows an electric water heater in Reference Example 4 of the present invention. The same elements as those in Reference Examples 1 and 2 are denoted by the same reference numerals and description thereof is omitted.

  In this reference example, the heat insulating material 11 is composed of a first heat insulating material 11a and a second heat insulating material 11b integrated with the first heat insulating material 11a, and the first and second heat insulating materials 11a and 11b. Is folded at the folded portion 15 that is not filled with the core material, and is overlapped and positioned on the outer peripheral portion of the container 3. And the upper end part of the 2nd heat insulating material 11b located in an outer peripheral side is arrange | positioned above the cover 8 and the seal part 5 of the container 3. FIG.

  Accordingly, the heat insulating material 11 can be doubled to double the heat insulating effect on the side surface of the container 3, and the outer heat insulating material 11 b covers the lid 8 and the seal portion 5 of the container 3. The heat insulation effect can be improved, and the to-be-contained object 2 in the container 3 can be kept warm with a small amount of heat retaining power.

(Embodiment 1)
FIG. 6 shows a main part of the electric water heater according to the first embodiment of the present invention. The same elements as those in Reference Example 1 are denoted by the same reference numerals, and description thereof is omitted.

  In the present embodiment, the sealing portion 5 with the lid 8 is provided by forming the convex portion 3 a on the inner side surface portion of the container 3 at a position below the upper end portion of the container 3. The heat insulating material 11 was a vacuum heat insulating material, and the upper end of the vacuum part was disposed above the seal part 5 between the container 3 and the lid 8. Furthermore, the lower surface 8 a of the lid 8 and the lower surface of the lid heat insulating material 9 built in the lid 8 are disposed below the seal portion 5.

  As a result, since the lid 8 and the seal portion 5 of the container 3 are covered with the heat insulating material 11, heat leakage from the seal portion 5 can be reduced, and the object 2 in the container 3 can be kept warm with a small amount of heat retention power. be able to. In particular, the heat insulating material 11 is a vacuum heat insulating material, and the upper end of the vacuum part is disposed above the seal part 5 between the container 3 and the lid 8, so that the vacuum heat insulating material has a substantially high heat insulating effect. Since the cover 8 and the seal part 5 of the container 3 are covered, heat leakage from the seal part 5 can be reduced. Further, since the lower surface 8 a of the lid 8 is disposed below the seal portion 5 between the container 3 and the lid 8, the lower surface of the lid 8 lowers the heat in the container 3 below the seal portion 5. Further, since the outer periphery of the seal portion 5 is covered with the heat insulating material 11, heat leakage from the seal portion 5 can be reduced. In particular, since the lower surface of the lid heat insulating material 9 built in the lid body 8 is disposed below the seal portion 5, the lower surface of the lid body 8 increases the heat in the container 3 below the seal portion 5. Further, the heat insulation effect can be further increased by overlapping the cover heat insulating material 9 of the lid body 8 having a substantially high heat insulation effect and the heat insulation material 11 on the outer periphery of the seal portion 5.

  As described above, the heat insulating device according to the present invention can greatly reduce the heat leakage from the side surfaces of the seal part of the container and the lid, and can have a high energy saving effect. It can be applied to heat insulation reinforcement of equipment for the purpose of keeping warm, such as a water heater or a water heater.

The longitudinal cross-sectional view of the electric water heater in the reference example 1 of this invention Cross section of the main part of the electric water heater Sectional drawing of the principal part of the electric water heater in the reference example 2 of this invention Sectional drawing of the principal part of the electric water heater in the reference example 3 of this invention Partial longitudinal cross-sectional view of the electric water heater in Reference Example 4 of the present invention Sectional drawing of the principal part of the electric water heater in Embodiment 1 of this invention

DESCRIPTION OF SYMBOLS 1 Body 2 Containment 3 Container 4 Upper frame 5 Seal part 6 Heating means 8 Cover body 9 Cover heat insulating material 11 Heat insulating material 11a 1st heat insulating material 11b 2nd heat insulating material 12 Vacuum part 14 Crevice 15 Folding part

Claims (1)

A bottomed cylindrical container that accommodates an object to be stored, a heating unit that heats and retains the object to be stored in the container, a lid that covers the upper opening of the container, and a gap between the outer periphery of the container A cylindrical heat insulating material provided; a convection preventing member disposed in a part of the gap; and a body positioned on the outer periphery of the heat insulating material, the heat insulating material comprising a vacuum heat insulating material having a vacuum part. The heat insulating device is characterized in that a seal portion between the container and the lid is provided at a position below the upper end portion of the container, and an upper end of the vacuum portion is disposed above the seal portion. .

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