JPS6038429Y2 - coffee liquid extraction equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coffee liquid extraction device that can effectively keep the coffee liquid extracted and stored in a container warm.

In the conventional device, as shown in Fig. 6, the heat insulating plate C, which is provided by closing the opening B for exposing the heat paving plate of the base A from the back side, is attached to the base A with its flat upper surface in close contact with the back side. It is fixed by the installed moving plate.

Note that E indicates packing.

The moving platen has a heater and a hot water boiling pipe (not shown) buried therein, and the heater heats the water to supply hot water, and the water in the container placed on the platen is heated via the moving platen and the heat insulating plate C. It is designed to keep the coffee liquid warm.

By the way, the insulation effect largely depends on the closeness between the moving platen and the heat-insulating plate C, but the heat-insulating plate C has a sixth
As shown by the two-dot chain line in the figure, the tendency for the heat insulating plate C to rise is particularly apparent when the heat insulating plate C is made of a thin metal plate.

If such lifting of the heat insulating plate C occurs, thermal conductivity deteriorates, making it impossible to effectively insulate the coffee liquid.

The present invention was devised based on the above circumstances, and its purpose is to provide a coffee liquid extraction device with a simple structure that prevents the warming plate from lifting up and effectively keeps the coffee liquid warm. Our goal is to provide the following.

Hereinafter, the present invention will be explained with reference to an embodiment shown in FIGS. 1 to 5.

In the figure, reference numeral 1 denotes a base made of synthetic resin with an opening 2 for exposing a heat insulating plate formed on the upper front surface, and a water tank 3 is attached to the upper rear surface of the base 1 standing upright.

The opening 2 is closed from the back side by a heat insulating plate 4 made of a thin metal plate such as a thin stainless steel plate or an aluminum alloy thin plate,
A heat-resistant gasket 5 made of silicone com or the like is interposed between the vicinity of the periphery of the heat insulating plate 4 and the back surface of the edge of the opening 2.

The heat retaining plate 4 is fixed via a moving plate 6 which is fixed to the base in close contact with the back surface of the heat retaining plate 4.

In other words, the moving platen 6 is made of aluminum alloy gui-cast, and is fixed to the base 1 by fixing screws 7 that are inserted upward through mounting arms 6a provided at multiple locations. The tightening of 7... is such that the heat insulating plate 4 is fixed between the packing 5 and the moving platen 6 by force.

The peripheral edge of the moving platen 6 is integrally formed with an upward protrusion 8 that presses upward the peripheral edge 4a of the heat insulating plate 4 located outside the gasket 5.

Therefore, due to the pushing up force of the upward protrusion 8, the heat insulating plate 4 is always given a downward force such that the closer it is to the center, the more strongly it comes into contact with the flat upper surface 6a of the moving platen 6.

Although this embodiment shows a case in which a plurality of upward protrusions 8 are provided at appropriate intervals, they may be provided in an annular shape facing the entire periphery 4a of the heat insulating plate 4, or may be provided in an annular shape. It's okay.

Further, a heater 9 is embedded in the moving platen 6, and a water boiling pipe 10 is embedded along the heater 9.

Note that 11 is a joint pipe that communicates the inlet of the water boiling pipe 10 with the outlet of the water tank 3, and this joint pipe houses a throttle 12 and a check valve 13 that only allows flow from the water tank in the direction of the water boiling pipe 10. It is.

Reference numeral 14 denotes a hot water supply pipe that communicates with the outlet of the hot water boiling pipe 10 via a joint pipe 15, and is arranged in a hot water supply pipe arrangement cylindrical portion 3a that is sectioned in a part of the water tank 3, and for example, hot water is supplied to the outlet in an annular shape. A discharge port body 16 having a spouting sludge 16a that can be sprayed is communicated.

3b is a discharge port support part integrated with the water tank 3; 17 is a cover;
18 is an aquarium lid, 19 is a glass container that is detachably placed on the heat insulating plate 4, and 20 is an extractor that is detachably placed on the container 19. In this embodiment, a filter paper 21 is placed inside. It shows what is stored and used to extract coffee liquid.

Reference numeral 22 denotes an extractor lid, which has a spout 22a facing the spout slit 16a.

Further, in FIG. 2, 23 indicates a temperature fuse, 24 a thermostat, 25 a switch, and 26 a power supply cord.

Therefore, in this coffee liquid extraction device, the water contained in the water tank 3 is passed through the check valve 13, the aperture 12 and the joint pipe 11.
The water flows through the hot water boiling pipe 10 and is heated by the heater 9 to become hot water.

This hot water is supplied to the outlet body 16 through the joint pipe 15 and the hot water supply pipe 14 due to the pressure during boiling, and is then jetted from the outlet body 16 toward the coffee grounds (not shown) in the extractor 20. be done.

Therefore, the hot water passes through the coffee powder and the filter paper 21 and becomes coffee liquid, which is dripped toward the container 19 and stored in the container 19.

The coffee liquid stored in this way is transferred to the heater 9.
The temperature is maintained by heat conducted from the moving platen 6, the heat insulating plate 4, and the container 19.

In this case, the heat insulating plate 4 does not float off the hot plate 6, and therefore heat conduction is good, so that heat can be kept effectively.

That is, as schematically shown in FIG. 4 and FIG.
By pushing up the heat insulating plate 4, an acting force F is constantly applied, using the packing 5 as a fulcrum, to further push down the center side of the heat insulating plate 4, as shown by the two-dot chain line in FIG.

Therefore, the closeness between the back surface of the heat retaining plate 4 and the flat upper surface 6a of the hot plate 6 is further increased, and the heat retaining plate 4 can counteract the force that tends to bulge upward due to its thermal expansion.

This reliably prevents the heat insulating plate 4 from lifting off from the moving platen 6 and ensures good heat conduction.

Although the above-mentioned embodiment is constructed as described above, in carrying out the present invention, specific structures such as the base, heat insulating plate, packing, moving plate, upwardly protruding portion, etc. may be modified unless it goes against the gist of the invention. ,
It goes without saying that the shape, position, coffee liquid extraction means, hot water supply means, etc. are not limited to the one embodiment described above, and can be implemented with various configurations.

As explained above, the present invention provides an upwardly protruding portion on the peripheral edge of the moving plate, thereby upwardly pressing the peripheral edge of the heat insulating plate made of a thin metal plate located outside the packing.
It is characterized in that a downward force is always applied to the center side of the heat insulating plate.

Therefore, according to the present invention, it is possible to improve the closeness between the heat insulating plate and the moving plate, and it is also possible to reliably prevent the heat insulating plate from lifting up from the moving plate due to the influence of thermal expansion, thereby effectively keeping the coffee liquid warm. can be done.

Further, it has an extremely simple structure that only requires an upwardly protruding portion on the moving platen, and has the advantage of being easily realized.

[Brief explanation of drawings]

Figures 1 to 5 show an embodiment of the present invention, with Figure 1 being a vertical sectional view, Figure 2 being a bottom view with the bottom plate of the base removed;
FIG. 3 is an enlarged sectional view of the main part, FIG. 4 is an exploded schematic diagram of the main part, and FIG. 5 is an explanatory diagram showing the function of the main part. FIG. 6 is a sectional view showing a part of a conventional coffee liquid extraction device. 1...Base, 2...Opening for exposing heat insulation plate, 4...Heat insulation plate, 4a...Periphery of heat insulation plate, 5... ...Patsukin, 6...Movement plate, 7
...Fixing screw, 8...Upward protrusion.

Claims (1)

[Scope of utility model registration request] A heat insulating plate made of a thin metal plate that is provided by closing an opening for exposing the heat insulating plate formed in the base from the back side, and a heat-resistant gasket interposed between the vicinity of the periphery of the heat insulating plate and the back side of the edge of the opening. ,
A moving plate fixed to the base in close contact with the back surface of the heat insulating plate, and an upward protrusion that is integrally formed on the periphery of the moving plate and presses upward the periphery of the heat insulating plate located outside of the gasket. A coffee liquid extraction device comprising: