JP2000300438A - Coffee serving apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coffee serving apparatus capable of cooling coffee in a moment without deteriorating its flavor, measuring the quantity of coffee precisely for pouring the coffee into a cup, and serving both iced and hot coffee. SOLUTION: A cooler 11, an agitator 12, and a helical coffee cooling pipe 17 are disposed along the inner wall of a cooling water tank 10. Drip coffee, passing through the cooling pipe 17 via a middle funnel 14, is cooled in a moment to reach a saving tank 18. Since coffee is indirectly cooled by means of cooling water, the coffee is kept cold in a satisfactory condition. Coffee in the saving tank 18 is measured in a measuring barrel 3 by way of a coffee feed pipe 20, then is poured into a cup precisely by the operation of a brewing cock 4. If a three-way valve is mounted just under the middle funnel 14, the piping extending to the front of the device main body, with a brewing cock mounted, hot coffee can also be served.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes it possible to supply both iced coffee and hot coffee with a single device, make the supply amount accurate, adjust the iced coffee in a short time, and increase the capacity of the device. The present invention relates to a coffee supply device that can easily change the coffee supply.

[0002]

2. Description of the Related Art Conventionally, a coffee supply apparatus has a compressor 6, a condenser 8, and a condensation fan 9 in a base 6 as shown in FIG. 11, a cooling tank 10b in a main body 1, and a cooling tank 10b. A cooler 11b is closely wound around the periphery of 10b in a spiral manner, and the iced coffee in the cooling tank 10b is injected into the cup from the extraction cock 4b via the supply pipe 20b. In addition, extraction cock 4
A measuring cylinder 3b for displaying the remaining amount of coffee in the cooling tank is mounted in front of b.

[0003]

In the above-mentioned conventional coffee supplying apparatus, the extracted coffee requires a considerable time until it is cooled to an appropriate temperature, during which time oxidation proceeds and the flavor of the coffee is spoiled. There is a problem that the coffee is poured into the cup when the coffee is poured into the cup, and the coffee may overflow from the cup if the user is not careful.

[0004] Further, the conventional coffee supply apparatus cannot serve also as a supply of hot coffee because of the above-mentioned structure, and has a cooler wound around a tank. Could not easily change the capacity.

[0005] In view of the above, the present invention provides instant cooling of the extracted coffee to provide a savory iced coffee, accurately measures the amount of coffee poured into the cup, and inadvertently turns the coffee into a cup. It is an object of the present invention to provide a coffee supply device that does not overflow from the inside, and also to provide a device that can supply hot coffee with a simple operation.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a cooling tank, a stirrer and an ice coffee storage tank which are one of refrigeration cycles in an adiabatic insulated water tank. A configuration is adopted in which the coffee liquid is introduced into the storage tank for the iced coffee through a cooling pipe provided in the water tank, and a measuring cylinder is provided upstream of the coffee extraction cock of the coffee supply device. The coffee supply device is provided with a water heater, and a three-way valve is provided in a portion of the cooling pipe of the coffee supply device before entering the water tank, so that hot coffee can be supplied. In coffee supply equipment,
A flexible hose is connected between the intermediate funnel for receiving the drip coffee liquid, the beginning of the cooling pipe, the end of the cooling pipe, the inlet pipe of the ice coffee storage tank, the outlet pipe of the ice coffee storage tank, and the coffee supply pipe. And in the coffee supply device, 80 to 100
The apparatus is provided with a mechanism capable of adjusting coffee dripped at 0 ° C. to ice coffee at 0 to 5 ° C. in 25 to 35 seconds.

According to the present invention constructed as described above, the dripped coffee liquid is instantaneously cooled, and its flavor is not impaired, and the cool state is good.

Further, there is no fear that the amount of coffee poured into the cup is stable and overflows, and the addition of a water heater makes coffee extraction convenient, and hot coffee can be provided as desired. become.

Further, since the coffee is indirectly cooled by the cooling water and the cooler is not directly wound around the coffee storage tank, the coffee storage tank can be easily replaced, and the coffee storage tank can be easily replaced according to the customer's request. The capacity of the device can be changed by replacing the storage tank.

[0010]

Next, an embodiment of the present invention will be described with reference to the drawings. FIGS. 1 to 3 show a first embodiment of the present invention. In FIG. 3, a trip table 2 on which a drip funnel 29 (see FIG. 1) is mounted is provided on the upper part of a main body 1 and a single cup is provided on the front surface of the main body 1. There is a measuring cylinder 3 (a measuring value can be set by a capacitive sensor, an optical sensor, etc.) for measuring minutes (about 120 cc) and a coffee extraction cock 4, and a drain pan 5 is provided below the measuring tap 3. .

The internal structure will be described in detail with reference to FIG. A refrigerant compressor 7, a condenser 8, and a condensation fan 9 are provided inside the base 6, a cooling water tank 10 is provided inside the main body 1, and a cooler, which is one of refrigeration cycles, is provided along the inner wall. A stirrer 12 and an ice coffee storage tank 1 are arranged inside the cooler.
8 is provided detachably. Reference numeral 13 denotes an accumulator.

Above the inside of the main body, there is an intermediate funnel 14,
This intermediate funnel 14 is connected to the beginning of a spiral coffee cooling pipe 17 via a flexible hose 15a, and the end of the cooling pipe 17 is connected to the storage tank 1 via a flexible hose 15b.
8 is connected to an inflow pipe 19i. A discharge pipe 19o of the storage tank 18 is connected to a coffee supply pipe 20 via a flexible hose 15c and is connected to the extraction cock 4 via the measuring cylinder 3.
Leads to.

The connection between the intermediate funnel 14 and the beginning of the cooling pipe 17 for coffee, the connection between the end of the cooling pipe 17 and the inflow pipe 19i of the storage tank 18, and the storage tank 18
The flexible hoses 15a, 15b, 15c intervene in the connection between the discharge pipe 19o and the coffee supply pipe 20.
This is to facilitate replacement of the storage tank 18 when a customer requests a change in the capacity of the device.

With the capacity of the cooling water tank 10 being 18 liters (hereinafter referred to as 1), a stainless steel tube having an outer diameter of 6.35 mmφ and an inner diameter of 5.55 mmφ is placed in the cooling water tank 10 so that the center diameter becomes approximately 150 mmφ. Cooling tube 1 with 7.5 turns
7 was arranged.

In addition, the same stainless steel tube was used for 5.5.
When the rolled product and the 10.5 rolled product were prototyped and placed in the cooling water tank 10, the coffee liquid at 90 ° C passed through the cooling pipe, passed through the storage tank 18 and passed into the cup. It was cooled to a temperature in the range of 2-3 ° C. during the feeding.

However, in the same manner as described above, the continuous drip of the 90 ° C. coffee liquid was continuously supplied to the cup. As shown in FIG. The temperature of the supplied coffee exceeds 5 ° C. in the second cup, and the temperature of the supplied coffee is reversed when the 80 cups are supplied as shown in the curve C at the time when 80 cups are supplied.

It is considered that, when the cooling pipe 17 is short, if the coffee liquid is continuously supplied, the water temperature around the cooling pipe 17 rises and the coffee is not sufficiently cooled. If the length is too long, it is considered that the balance of heat exchange is reversed. Therefore, the size (inner / outer diameter) of the cooling pipe 17 of this embodiment is 7.5 to 10.
Five turns are appropriate. However, it is considered that it changes depending on the capacity of the cooling water tank, the size of the cooling pipe, and the material, so the design is made based on experimental data.

In the above experiment, the strictest possible conditions were set for practical use. In practice, the coffee liquid stays in the storage tank for a certain period of time, so that it is sufficiently cooled.

The specific structure of the extraction cock 4 will be described with reference to FIG. A slide valve 21 is provided below the measuring cylinder 3,
The slide valve 21 is connected to a lever 23 of the extraction cock 4 by a connecting stick 22. When the lever 23 is moved back and forth, the cone 24 of the slide valve 21 moves back and forth. In the state shown in the drawing, the coffee liquid is flowing into the measuring cylinder 3, and when the level sensor 30 provided in the measuring cylinder 3 operates, the solenoid valve 31 is closed and the supply of the coffee liquid is stopped.

When the lever 23 is pulled forward, the cone 24 of the slide valve 21 moves to the opposite side, and the coffee liquid in the measuring cylinder 3 is supplied from the extraction cock 4 to the cup. At this time, since the level of the measuring cylinder 3 is lowered, the above-described solenoid valve 30 is opened. However, since the cone 24 of the slide valve 21 is located on the left side in the drawing, the amount of coffee is not inconsistent. Cone 2 of valve 21
4 returns to the original state, and the coffee liquid is supplied to the measuring cylinder 3 again, and thereafter, coffee is supplied by the same repetition.

The operation of the refrigerator is controlled as follows. When the ice layer 25 formed around the cooler 11 reaches the detecting section of the electrode type sensor (not shown), the refrigerator is stopped and the ice layer 25 of the detecting section of the sensor is stopped. When there is no more, the refrigerator is operated.

As described above, since the coffee liquid is cooled indirectly through the cooling water, stable temperature control is performed in the range of 0.3 to 1 ° C.

FIG. 4 shows a second embodiment in which a water heater 26 is provided on the upper part of the main body 1 having the basic structure of the first embodiment. The water heater 26 comprises a hot water tank 32, a heating heater 33, and a water supply. An electromagnetic valve 34, an electrode type level sensor 35, a temperature sensor 36 and a hot water supply nozzle 37,
Is connected to a water supply 38.

When the power of the water heater 26 is turned on, the water supply electromagnetic valve 34 is opened to start water supply, and when the water level of the electrode type level sensor 35 is reached, water supply is stopped. Next, heater 3
3, the water temperature in the hot water supply tank 32 rises, and the temperature sensor 36 operates to control the temperature not to exceed 95 ° C.

In order to drip coffee in the above state, when a drip start switch (not shown) is pressed, the electromagnetic valve 34 opens for a certain period of time, and one cup or a specified amount of water flows in from the bottom of the hot water supply tank 32. . At this time, since the density of the cold water is high, it stays at the bottom of the hot water supply tank 32, the water level of the whole hot water supply tank 32 rises, and the hot water in the upper layer overflows from the hot water supply nozzle 37 and is injected into the drip funnel 29.

FIGS. 5 to 7 show an apparatus capable of supplying both iced coffee and hot coffee in the third embodiment. The basic structure is the same as that of the first embodiment. When hot coffee is required, the three-way valve 28 shown in FIG. 6 is rotated by turning the operation knob 27 on the front of the main body, and the dripped coffee liquid enters the measuring cylinder 3h without being cooled and reaches a predetermined amount. When an electrode type level sensor (not shown) is activated, a solenoid valve (not shown) is activated to stop the supply of the coffee liquid, and when the extraction cock 4h is pulled, hot coffee is supplied to the cup. In this embodiment, as shown in FIG. 7, an ice coffee measuring cylinder 3c and a hot coffee measuring cylinder 3h are arranged on the front of the main body, and both the measuring cylinders 3c and 3h are subjected to an adiabatic heat-insulating treatment. It is also possible to supply coffee.

FIGS. 8 and 9 show a fourth embodiment in which the capacity of a storage tank (capacity = 1.2 liters) alone becomes insufficient due to an increase in the size of a store or an increase in the number of customers. It is what is adopted in the case.

In this embodiment, a connecting pipe 40o is provided between the coffee discharge pipe 19o of the storage tank 18 and the coffee supply pipe 20.
(Discharge side), 40i (inflow side) are led out to the outer wall of the main body 1 and connectors 41o, 41i are provided. Cap nuts 44o, 44i
, And attached to the outer wall of the main body 1 from the hanging metal fittings 45 and the headed pins 46. When the external storage tank 42 is not required in this embodiment, the capacity of the storage tank 18 in the main body 1 is obtained by connecting the connectors 41o and 41i with the bypass pipe 47 which has been subjected to the heat insulation treatment. In addition, the capacity of the external storage tank is prepared to be 2.5 l, 3 l, 4 l or the like.

[0029]

As explained above, according to the present invention,
The drip coffee is instantly cooled and stable cooling can be expected without impairing the flavor.Also, the amount of coffee poured into the cup is stable and there is no fear of overflowing. Extraction becomes convenient and hot coffee can be provided as desired.

In addition, since the cooler is not directly wound around the storage tank, but is not wound directly around the storage tank, the storage tank is cooled indirectly without being wound directly around the storage tank. It can be attached, and by adopting an external storage tank, the range of capacity adjustment can be expanded.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a first embodiment according to the present invention.

FIG. 2 is an enlarged cross-sectional view of the extraction cock part partially cut away.

FIG. 3 is an external perspective view of the same.

FIG. 4 is a longitudinal sectional view of a second embodiment.

FIG. 5 is a longitudinal sectional view of a third embodiment.

FIG. 6 is a partially cutaway sectional view of the three-way valve.

FIG. 7 is an external perspective view of a third embodiment.

FIG. 8 is a longitudinal sectional view of a fourth embodiment.

FIG. 9 is an exploded perspective view of the same part.

FIG. 10 is a characteristic diagram of cooling capacity of coffee liquid.

FIG. 11 is a longitudinal sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Drip stand 3 Measuring cylinder 4 Extraction cock 5 Drain tray 6 Base 7 Compressor 8 Condenser 9 Condensing fan 10 Cooling water tank 11 Cooler 12 Stirrer 13 Accumulator 14 Intermediate funnel 15a, 15b, 15c Flexible hose 16 Cooling water tank 17 Cooling pipe 18 Storage tank (for iced coffee) 19i Coffee inflow pipe 19o Coffee discharge pipe 20 Coffee supply pipe 21 Slide valve 22 Connecting rod 23 Lever 24 Cone 25 Freezing tank 26 Water heater 27 Operating knob 28 Three-way valve 29 Drip Funnel 30 Electrode type level sensor (of measuring cylinder) 31 Solenoid valve 32 Hot water supply tank 33 Heater 34 Water supply solenoid valve 35 Electrode type level sensor (of water heater) 36 Temperature sensor 37 Hot water supply nozzle 40o, 40i Connecting pipe 41o, 41i Connect Over 42 external 蓄溜 tank 43 o, 43i connecting pipe 44o, 44i cap nut 45 hanger 46 headed pin 47 bypass pipe

Claims (6)

[Claims] 1. A cooling device, a stirrer, and a storage tank for iced coffee, which are one of refrigeration cycles, are provided in a water tank, and the iced coffee is passed through a cooling pipe provided in the water tank. A coffee supply device to be introduced into a storage tank. 2. The coffee supply device according to claim 1, wherein a measuring cylinder is interposed on the coffee supply device upstream of the coffee extraction cock. 3. The coffee supply device according to claim 1, wherein the coffee supply device is provided with a water heater having water level control and temperature control functions. 4. The coffee supply device according to claim 1, wherein a three-way valve is provided immediately below the intermediate funnel of the coffee supply device so that hot coffee can be supplied. 5. The coffee supply device, wherein an intermediate funnel for receiving the drip coffee liquid, a start end of the cooling pipe, an end of the cooling pipe, an inlet pipe of an ice coffee storage tank, and discharge of an ice coffee storage tank. The coffee supply device according to any one of claims 1 to 4, wherein the tube and the coffee supply tube are connected by a flexible hose. 6. The coffee supply apparatus according to claim 1, further comprising a mechanism capable of adjusting coffee dripped at 80 to 100 ° C. to ice coffee at 0 to 5 ° C. in 25 to 35 seconds. A coffee supply device as described.