JPH0310911Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a heat insulator such as a coffee boiler.

<Prior Art> Conventionally, as shown in FIG. 5, in a drip-type coffee brewer or other heat insulator, a heater mounting piece 2 is provided at the lower part 1 of the main body, and a heat-retaining heater 3 is attached to the upper surface of the heater mounting piece 2, as shown in FIG. A heat-retaining plate 4 is provided on the heat-retaining heater 3 on which a container such as a kettle containing an object to be kept warm, such as coffee, is placed. And thermal plate 4
The outer edge 4a of the outer edge 4a is curved outwardly.
a is supported by a mouth wall support portion 1c of a heat-retaining plate receptacle 1b formed in a heat-retaining plate mounting portion 1a of the lower part 1 of the main body.

However, with this structure, when the object to be heated in the container is spilled on the heating tray placement part 1a, or the water in the water supply is spilled, the objects are kept warm through the gap e between the heating tray 4 and the support part 1c. It invades the heater section, causing corrosion of the heater and deterioration of thermal insulation, resulting in a reduction in safety during use, poor heat retention, and deterioration in the durability of the heater.

<Purpose> Therefore, the present invention aims to provide a heat insulator that can protect the heat insulating heater from intrusion of water, etc., prevent corrosion and deterioration of thermal insulation properties, and improve safety.

<Example> Hereinafter, an example in which the present invention is applied to a drip-type coffee brewer will be explained with reference to FIGS. It has a stand 2, a heat-retaining heater 3 attached to the heater mounting base 2, and a heat-retaining plate 4 provided on the heat-retaining heater. It is set up to surround.

The main body A has a prismatic main body upper part 6 and a longitudinal section L.
The main body A is formed into a U-shape from a lower part 1 of the main body, and the main body A is provided with a tank, a heat retaining heater 3, and a heating heater 11. The tank is
It consists of a water supply tank 7 and a heating tank 8, and the water supply tank 7 and the heating tank 8 are communicated with each other through a communication pipe 9 and a water supply pipe 10. The water tank 7 is arranged on the upper part 6 of the main body, and has a water inlet 7c having a slatted filter 7b formed on its upper side 7a, and a lid 7d covering the water inlet 7c is pivoted to the upper part 6 of the main body so as to be rotatable in opening and closing. has been done. The heating tank 8 is disposed in the vertical part of the lower body part 1, and its upper part 8a penetrates into the upper body part 6. The heating tank 8 includes a water conduit D and a heater 11 built therein. One end of the water pipe D communicates with the water supply pipe 10, and the other end is open at the lower part of the heating tank 8. The heater 11 is connected to a power switch S1 on the upper side wall of the main body via a temperature control device K such as a thermostat inside the main body A.
is connected to. Further, a drain port 8b is formed in the lower side wall of the heating tank 7, and a drain pipe 12 is connected to the drain port 8b. One side of the drain pipe 12 protrudes outside the lower part 1 of the main body, and an opening/closing device C such as a pot is provided on the protruding portion 12a.

In addition, a filter box 1 is provided on the lower surface 6a of the upper part of the main body.
3 is attached, and the filter box 13 and the heating tank 8 are connected through a hot water discharge pipe 14. The filter box 13 has the lower surface 6a
It is made up of a lid part 13a fixed to and a filter part 13b filled with coffee raw material N. The lid portion 13a includes a cylinder 13e that forms a hot water supply port 13d at a communication portion 13c between the hot water discharge pipe 14 and the filter box 13.
protrudes surrounding the communication portion 13c, and a hot water filter F1 in the form of a punched hole is attached to the opening 13f of the cylinder 13e to diffuse and flow hot water. The filter part 13b has a bottom part 13.
A lower opening 13h is bored in g, and a paper filter F2 is removably covered on the inner surface. Further, an upper heat-insulating heater 15 and an upper heat-insulating plate 16 are provided on the upper wall of the upper part 6 of the main body. The upper heat-retaining heater 15 and the heat-retaining heater 3 are connected to a power switch S1 via a heat-retaining switch S2 on the upper side wall of the main body.

The heat-retaining heater 3 is a donut-shaped heating element having a hole 3a, and a connection terminal 3b to a power source protrudes from the lower side thereof. Metal heater mounting base 2
consists of an octagonal heater mounting portion 2a, a leg portion 2b bent vertically downward from the side end of the heater mounting portion 2a, and a horizontal portion of the lower body 1 bent horizontally from the leg end. It consists of a fixed part 2c fixed to the bottom plate 1d by welding or the like. and the heater mounting part 2
Two connection terminal holes 2d are formed in a, and a screw hole 2e is bored in the center, and a plurality of heat insulating protrusions 2f that come into contact with the lower surface of the heat-retaining heater 3 are formed on the upper surface. has been done. This heater mounting base 2
As will be described later, the heat insulating plate 4 and the heat insulating plate mounting portion 1a
The height is set so that a gap e is formed between the two for preventing heat transfer between the two or for dissipating heat from inside the main body. The outer edge 4a of the heat-retaining plate 4 is curved outward. Furthermore, a heat-retaining dish receptacle 1b is formed in the heat-retaining dish mounting part 1a of the lower part 1 of the main body, and a heat-retaining dish support part 1c is protruded from the mouth wall of the receptacle 1b. A gap e is formed between the heat-retaining plate 4 and the heat-retaining plate support portion 1c. This gap e is such that, for example, when a stainless steel plate is used as the heat-retaining plate placement part 1a of the lower part 1 of the main body, the heat of the heat-retaining plate 4 is transferred to the placement part 1a.
It has a function of preventing heat from being transferred to the body, and a heat dissipation function of preventing heat from the thermal heater 3 from being trapped in the space below the main body. The protective cover 5 is made of metal, and has a cylindrical portion 5a into which the insulating heater 3 can be fitted and has a height greater than the height of the heater 3.
and a joining flange portion 5b. The flange portion 5b is fixed to the outer periphery of the bottom portion 4b of the heat-insulating plate 4 by welding or the like, and a synthetic resin sealing film 17 is applied and formed on the entire circumferential joint portion of the flange portion 5b. Further, the cylindrical portion 5a has an inner diameter that allows the mounting portion 2a to be fitted therein, and a mounting protrusion 18 is fixed to the center of the bottom portion 4b, and a screw hole 18b is formed in the center thereof. There is. Then, the mounting screws 19 are screwed into the screw holes 18b of the convex piece 18 on the bottom 4b of the heat-insulating plate 4 and the screw holes 2e of the heater mount 2, thereby fixing the heat-insulating plate 4 and the mount 2. Then, the heat-retaining heater 3 is attached to the protrusion 2 of the mounting base 2.
It makes point contact with the projection 2f and is held between the projection 2f and the bottom of the heat-retaining plate 4. Note that G is a container such as a cup placed on the heat-insulating plate 4.

In the above configuration, the installation of the heat retention heater 3 is as follows:
First, the connection terminal 3b of the heat retention heater 3 is fitted into the connection terminal hole 2d of the heater mount 2 fixed to the main body A, and the heat retention heater 3 is placed on the heater attachment portion 2a. Next, the heat insulating plate 4 with the protective cover 5 welded in advance
is placed over the heat-retaining heater 3, and the mounting screw 19 is inserted into the threaded hole 18b of the heat-retaining plate 4 through the hole 3a of the heat-retaining heater 3 from the screw hole 2e of the mounting base 2.

Next, the coffee extraction operation will be explained. When water is supplied into the water supply tank 7, the water passes through the water supply pipe 10, is guided into the heating tank 8 by the water conduit pipe D, is heated by the heater 11 in the heating tank 8, and becomes hot water. When this hot water reaches a boiling state, a part of the hot water passes through the hot water discharge pipe 14 and diffuses out from the hot water filter F1 of the hot water supply port 13d of the filter box 13 due to the pressure increased in the tank. The hot water that flows out passes through the coffee raw material N and passes through the paper filter F.
2, the bottom 13g of the filter box 13
From the dripping port 13h, the coffee liquid flows into the heating plate 4.
It is dropped into the upper container G. In addition, in order to smoothly discharge hot water into the hot water discharge pipe 14 at the time of boiling, a part of the discharged hot water is returned into the water supply tank 7 through the communication pipe 9. Further, the temperature of the heater 11 is maintained at a constant temperature by a temperature controller K. Then, by turning on the heat retention switch S2, the heat retention heater 3 is activated, and the coffee liquid in the container G is maintained at a high temperature.

The above steps are repeated until the water in the water supply tank 7 runs out, and by replenishing water into the water supply tank 7 at any time, a large amount of coffee liquid can be extracted.

In this case, the coffee liquid being dripped may spill out of the container G, or the water in the water supply tank 7 may overflow to the outside of the water supply port 7c, causing the coffee liquid and Even if the heater 3 is immersed in water and enters the heater section through the gap between the insulation tray 4 and the insulation tray support part 1c, the insulation heater 3 is surrounded by the protective cover 5, so that it will not be soaked in water. Almost no corrosion or deterioration of thermal insulation occurs.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and of course, modifications and additions can be made within the scope of the present invention. Alternatively, the heat insulating plate and the protective cover may be integrally molded.

<Effects> As is clear from the above description, the present invention has a heating tray receptacle formed in the heating tray mounting portion of the heat insulator main body, a heater mount provided on the main body below the receptacle, and a heater mount provided on the main body below the socket. A heat-retaining heater is attached to a heater mount, and a heat-retaining plate is disposed in the socket on the heat-retaining heater. The height is set so as to form a gap for heat dissipation from inside the main body, and a protective cover for draining water is provided around the bottom outer periphery of the heat-insulating plate so as to surround the heat-insulating heater.

Therefore, according to the present invention, the height of the heater mounting base is set so that a gap is formed between the heat-insulating plate and the heat-insulating plate placement part, so that the height of the heater mounting base is set so that a gap is formed between the heat-insulating plate and the heat-insulating plate placing part. It can prevent heat from being transferred to.
In addition, the inside of the main unit tends to become high temperature due to heat radiation from the heater, but since there is a gap between the heat insulating tray and the placing part, the heat dissipates through that gap and has a negative impact on other control devices built into the main unit. can be prevented.

Furthermore, since the insulation heater is surrounded by a protective cover, even if there is a gap between the heating tray placement part of the main body and the heating tray to prevent heat transfer between the two or to dissipate heat from inside the main body. Even if water enters through this gap, the protective cover can prevent the water from coming into contact with the heater, preventing corrosion and deterioration of thermal insulation, and improving safety. effective.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view of one embodiment of the present invention;
The figure is an XX vertical front view of the same, Figure 3 is a vertical front view of the main parts, and Figure 4 is an exploded perspective view of the main parts.
FIG. 5 is a longitudinal sectional front view of the main parts of a conventional heat insulator. 1...Lower part of main body, 1a...Heat plate placement part, 1b
...Receptacle for heat-retaining plate, 1c... Support part, e... Gap, 2... Heater mounting base, 3... Heat-retaining heater, 4
... Warm plate, 5 ... Protective cover, 6 ... Upper part of main body, 7 ... Water tank, 8 ... Heating tank, 11
...Heating heater, A...Thermal insulator body.

Claims (1)

[Scope of utility model registration request] A heat insulating dish socket is formed in the heat insulating dish mounting portion of the heat insulator main body, a heater mount is provided on the main body below the socket, a heat insulating heater is attached to the heater mount, and a heat insulating plate is mounted on the heat insulating heater. A heat-insulating plate is disposed in the receptacle, and the heater mounting base is designed to form a gap between the heat-insulating plate and the heat-insulating plate mounting portion to prevent heat transfer between the two or to dissipate heat from inside the main body. 1. A heat insulator, characterized in that the height is set, and a protective cover for draining water is provided on the outer periphery of the bottom of the heat insulating dish so as to surround the heat insulating heater.