JPH0228828Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for brewing coffee, tea, etc.

Conventionally, in the case of this type of coffee, tea, etc. extraction equipment (hereinafter referred to as the equipment), the temperature of the hot water flowing out from the water tank into the pipe is measured with a thermometer, etc., and the hot water suitable for coffee, tea, etc. is pumped through a valve. However, the disadvantage was that the operation was troublesome.

This invention was made to eliminate the above drawbacks, and when the temperature of the water in the pipe reaches a temperature suitable for coffee or tea, the valve is automatically opened via a coil spring made of shape memory alloy. To provide an easy-to-operate and very user-friendly device which allows hot water in pulp to flow out.

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

In Figs. 1 and 2, reference numeral 1 denotes the main body of the device, which is provided with a water tank 2, a cooling chamber 3, a valve chamber 5, and a container chamber 7 in this order from above. Reference numeral 4 denotes a heat dissipation pipe, which is installed in the cooling chamber 3, which is formed into ninety-nine bends in order to bring the hot water passing through it to a temperature suitable for brewing coffee, tea, etc., and which is filled with a coolant 32 around it. The valve 6 has its upper opening 41 connected to the hole 22 at the center of the bottom of the water tank 2 via the gasket 21, and its lower opening 42 connected to the partition wall 35 between the cooling chamber 3 and the valve chamber 5.
It is connected to the upper chamber 61 of the housing via a gasket 31. 62 is a lower chamber, and a communication hole 63 is provided between the upper chambers 61.
A partition wall 65 having a through hole 64 is provided, and a bottom portion 68 of the partition wall 65 has an insertion hole 66 and an open air opening 67. Reference numeral 8 denotes a through shaft, and a sealing plate 81 for sealing the lower opening 42 of the pipe 4 is provided at one end of a substantially cylindrical shape located in the through hole 64, and a protruding portion 8 that protrudes to the outside through the insertion hole 66 at the other end.
2, and a disc-shaped protrusion 83 having a gasket 84 attached to its peripheral end on the protrusion 82 side.
has been formed. 9 is a coil spring, and a sealing plate 81
It is interposed on the through shaft 8 between the partition wall 65 and the partition wall 65, and urges the sealing plate 81 toward the lower opening 42 side. Reference numeral 10 denotes a coil spring (hereinafter referred to as "spring") having a larger elastic force than the coil spring 9, which is made of a shape memory alloy and is interposed on the penetrating shaft 8 between the protrusion 83 and the partition wall 65. This urges the portion 83 toward the bottom portion 68. Reference numeral 57 designates a removable mounting portion for the filter 11, which is formed in a ring shape at the dividing portion between the valve chamber 5 and the container chamber 7, and a container 71 such as a pot is installed in the container chamber 7 below the filter 11. It has a structure.

Next, the operation of the present invention will be described.

When brewing coffee, tea, etc., hot water is poured into the water tank 2, and the hot water passes through the pipe 4 in the cooling chamber 3 while being cooled by the coolant 32, and passes through the partition wall 35.
The water flows into the upper chamber 61 of the valve 6 which is connected to the valve 6. At this time, the spring 10 is in a contracted state and the outside air opening 67 is open. This inflowing hot water flows into the partition wall 6
5 falls into the lower chamber 62 from the communication hole 63 and is caught on the spring 10. Since the spring 10 is made of a shape memory alloy that expands at high temperatures and has a larger elastic force than the coil spring 9, the through shaft 8 moves toward the bottom 68 due to the extension of the spring 10 against the elastic force of the coil spring 9. Finally, the outside air opening 67 of the bottom 68 of the lower chamber 62 is closed by a gasket 84 attached to a disc-shaped protrusion 83 formed on the protrusion 82 side of the through shaft 8. Therefore, the upper chamber 61 and the lower chamber 62 are filled with hot water, the flow in the pipe 4 is stopped, and the hot water is gradually cooled by the coolant 32. When the hot water cools down to a certain temperature suitable for brewing coffee, tea, etc., the spring 10 tries to return to its contracted state before being expanded. Moving toward the lower opening 42 side, a gap is created between the gasket 84 and the bottom 68 of the lower chamber 62, and the cooled hot water flows into the valve chamber 5 from the outside air opening 67 at the bottom 68 of the lower chamber 62, and then passes through the filter 11. coffee grounds placed on top (not shown)
While moistening coffee and tea leaves (not shown), etc., coffee or tea is extracted into a container 71 installed below the filter 11.

According to the present invention, by providing a spring made of a shape memory alloy, the temperature at which the spring starts to contract can be adjusted to a temperature suitable for brewing coffee, tea, etc., and when that temperature is reached, the valve is opened. When opened, the hot water can be automatically flowed out to moisten coffee grounds, tea leaves, etc., so it is possible to provide a device that is easy to operate and is very user-friendly.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a coffee, tea, etc. extraction device according to an embodiment of the present invention, and FIG. 2 is a sectional view of the main part of the coffee, tea, etc. extraction device. 1...Main body, 2...Water tank, 3...Cooling chamber, 4...
...Pipe, 41...Top opening, 42...Bottom opening, 6...Valve, 10...Coil spring.

Claims (1)

[Scope of utility model registration request] A main body 1 is provided with a water tank 2, a cooling chamber 3, and a valve 6, and a pipe 4 for heat radiation is provided in the cooling chamber 3. An upper opening 41 of this pipe 4 is connected to the water tank 2, and a lower opening 42 is connected to the valve 6. Then,
A brewing device for brewing coffee, tea, etc., characterized in that a coil spring 10 made of a shape memory alloy is provided in the valve 6 to open and close the valve.