JPH01178211A - Electric coffee maker - Google Patents

Abstract

PURPOSE:To obtain tasty coffee of a fixed quality at all times, by arranging a plurality of blades on the upper surface of the upper section of a basket, an approximately disc-formed rotary plate with a wall erected on the full periphery and provided eccentrically with a hot water inlet, and a spray outlet with one end communicated with a water feeder and with the other end opened near the blades on the rotary plate. CONSTITUTION:By a pump 42, water in a water tank 4 is fed to a heating pipe 3, and is turned into hot water, and hot water discharged from a spray outlet 41 via a riser 17 is orthogonally butted to the blades 32 of a rotary plate 31, to push them. Then, the rotary plate 31 is slightly rotated. By repeating this working, the rotary plate 31 is rotated in one direction. In the meantime, after the blades 32 are pushed by the hot water discharged from the spray outlet 41, the hot water is stored on the rotary plate 31 by a wall 33 set on the full periphery. Then, the hot water dripping from a hot water inlet 36 set eccentrically on the rotary plate 31 is continuously rotated, and at the same time, the hot water is uniformly dripped on pulverulent coffee 24 in a basket 45.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a steam coffee brewer used in general households. It had a structure as shown. That is, in FIG. 3, 1 is a heater 2 and a heating vibrator 3 formed of a stainless steel pipe or the like.
This is a heating device with a built-in 4 is a water tank having an outlet 5 at the bottom.

Reference numeral 6 denotes a connecting tube that connects the heating vibrator 3 and the outlet 5. The outflow port 6 is provided with a convex portion 7 inside thereof, and a check valve 8 is held in this convex portion 7 with a margin of vertical movement of several degrees. When the check valve 8 moves upward, its flat portion 9 presses against the convex portion 7 to maintain watertightness. vice versa,
When the check valve 8 moves downward, a gap is generated between the check valve 8 and the convex portion 7, thereby releasing watertightness. 10 is engaged and held by the main body 11,
It is an inverted conical basket that is open at the top.

Reference numeral 12 denotes a drip hole provided at the bottom of the Basquera l-10. A glass container 13 is placed on the heating device 1 and located below the basket 10 to store extracted coffee.

14 is a glass container lid that is placed on the glass container 13 and has a through hole 15 approximately in the center. 16 has one end opened above the basket 10 and the other end connected to the water raising vibrator 1.
This is a discharge port that is communicated with the heating vibrator 3 through the opening.

Reference numeral 18 denotes a water leak prevention valve having a valve 19 at one end and a protrusion 20 extending downward at the other end. Reference numeral 21 denotes a pressure spring, and this suppression spring 21 is connected to the bottom leak prevention valve 1.
8 in the counterclockwise direction so that the valve 19 normally closes the drip hole 1.
I am trying to block 2. When the glass container 13 is set, the protrusion 20 is pushed against the glass container lid 14, and the leakage prevention valve 18 is rotated clockwise to open the drip hole 12.
to open.

22 is an automatic temperature regulator that controls the temperature of the heating device 1. 23 is a paper filter housed in the Basquera 10, and 24 is coffee powder.

In such a configuration, when the water tank 4 is filled with water and the heater 2 of the heating device 1 is energized, the heating pipe 3 is heated and the water inside boils to generate steam, and the expansion force of the steam causes hot water to rise. Pushed. Here, the check valve 8 is operated by the force that causes the hot water to flow back into the water tank 4 due to the expansion force of the steam.
The flat portion 9 is pressed against the convex portion 7 to create watertightness. Therefore, due to the expansion force of the steam, the hot water in the heating pipe 3 is pushed toward the rising pipe 17, that is, toward the discharge port 16, and is dissipated above the basket 10.

Further, when the hot water in the heating pipe 3 is forced out from the discharge port 16 by steam pressure, the pressure inside the heating pipe 3 returns to the same pressure as atmospheric pressure. At this time, the check valve 8 moves downward due to the water pressure of the water tank 4, and its flat part 9 separates from the convex part 7, releasing the watertight property, and flows from the water tank 4 through the outlet 5 to the heating pipe 3. Water flows in. The water flowing into the aging pipe 3 is heated by the heater 2 and boils to generate steam, and the expansion force and the action of the check valve 8 cause the hot water to be radiated upward from the discharge port 16 to the upper part of the basket 1o. This operation is repeated until the water tank 4 runs out of water.

In addition, the hot water discharged into the basket 10 passes through the coffee powder 24 to extract coffee liquid, passes through the drip hole 12 through the through-hole 15 of the glass container lid 14 via the spill prevention valve 18, and is stored in the glass container 13. Ru.

When the water in the water tank 4 runs out, the temperature of the heating device 1 is controlled by the automatic temperature controller 22 to keep it within a constant temperature, and the glass container 13 is heated from the bottom to keep the coffee warm.

Problems to be Solved by the Invention In the above-mentioned conventional electric coffee boiler, hot water is discharged to the coffee grounds 24 only approximately in the center, and is discharged at intervals of several seconds like a geyser. Therefore, the hot water was concentrated on the coffee grounds 24 in the approximate center of the basket 10, making it impossible to uniformly extract coffee from the entire coffee grounds 24.

Generally, the way to make delicious drip coffee is to set a paper filter in a basket to store the coffee grounds, then pour boiling water into the basket by hand until it reaches the top of the paper filter continuously, and when the water level gets low, pour hot water until the specified amount It is said that the best method is to pour the entire amount.

However, the conventional five-kiri coffee brewer described above differs significantly from the method of brewing coffee that is said to be delicious.
It has generally been said that coffee made with an electric coffee boiler is not delicious.

The present invention takes into consideration the above-mentioned conventional problems, and eliminates the need to supply hot water concentratedly to the approximate center of the basket, and eliminates the need for intermittent hot water injection. The purpose of the present invention is to provide an electric coffee boiler that can always produce delicious coffee of constant quality.

Means for Solving the Problems In order to solve the above problems, the present invention provides a water tank, a heating device, a water supply device communicating with the water tank, a basket with an upper opening, and a water tank located above the basket. a substantially disc-shaped rotating plate with a plurality of blades on its upper surface, a wall erected around the entire circumference, and an eccentric spout; , and a discharge port having one end communicating with the water supply device and the other end opening near the blade on the rotary plate.

Effect With the above configuration, hot water discharged from the discharge port by the water supply device hits the blades provided on the rotary plate, and the rotary plate rotates.

The hot water discharged from the wall erected around the rotating plate falls from the spout. In this case, the pouring spout is eccentrically installed on the rotary plate and is rotated by the hot water being discharged, so hot water can be continuously and uniformly poured into the coffee grounds in the basket, and as a result, By being able to drip coffee in the same manner as when a person brews coffee by hand, it is possible to obtain delicious coffee.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 and 2. In the figure, 1 is a heating device, 2 is a heater, 3 is a heating pipe, and 4 is a water tank.

5 is an outlet, 11 is a main body, 17 is a rising pipe, 22 is an automatic temperature controller, 23 is a paper filter, 24 is coffee powder, and the above is the same as the configuration shown in FIG. 3 for the conventional example. .

Reference numeral 31 denotes a rotating plate having a substantially disk shape, and this rotating plate 31 has eight curved blades 32 radially arranged in symmetrical positions with respect to the center, and has a height of 1 point higher than the height of the blades 32 on the entire circumference. A wall 33 that is ~12 mm high is provided, and a through hole 35 with a stepped portion 34 having a partially reduced diameter is provided in the center, and a pouring hole 36 is provided approximately midway between the center and the blade 32. ing. Reference numeral 37 denotes a shaft rod having an engaging portion 38 formed by increasing the diameter of the lower end;
7 rotatably holds the stepped portion 34 of the through hole 36 of the rotating plate 31 by the engaging portion 38.

39 is a bearing hole located above the heating device 1 and provided in the main body 11, and the shaft rod 37 is inserted into this bearing hole 39.
The upper part of the shaft passes through the bearing hole 39, and the shaft rod 3 is rotatably held in this bearing hole 39 by an E-shaped hinge 40.

Reference numeral 41 denotes a discharge port whose one end communicates with the rising water pipe 17, and the other end of the discharge port 41 opens from above the rotary plate 31 in a direction perpendicular to the curved portion of the blade 32. Reference numeral 42 denotes a pump, which has one end communicating with the outlet 6 of the water tank 4 and the other end communicating with the water rising pipe 17, so that the water in the water tank 4 is transferred to the outlet 6 of the water tank 4. This constitutes a water supply device that supplies water to 41.

A glass container 43 is located below the rotary plate 31 and placed on the heating device 1 via a heat insulating plate 44. Reference numeral 45 denotes a basket having a substantially inverted conical shape, and the basket 45 is open at the top and provided with the drip hole 46 at the bottom, and is located below the center and extends horizontally around the entire circumference in the shape of a substantially disk. A flange portion 47 is provided. Further, this basket 45 is supported by placing a flange portion 47 on the glass container 43 and is located below the rotary plate 31.

In the electric coffee brewer configured as above,
Next, its operation will be explained. A paper filter 23 is set in the bath care +-45, a desired amount of coffee powder 24 is added thereto, and the glass container 43 is placed. Then, this glass container 43 is placed on a heat insulating plate 44. Next, a predetermined amount of water is poured into the water tank 4. Preparation is now complete. When the heater 2 is energized in this state, the heating pipe 3 is heated via the heating device 1. This heating device 1 is maintained at a temperature of about 120° C. to 160° C. by an automatic temperature controller 22. Approximately 2 minutes after the heater 2 is energized, the pump 42 is driven. The water in the water tank 4 is sent to the heating pipe 3 by this pump 42 to become hot water, which is then discharged from the discharge port 41 via the rising pipe 17.

The hot water discharged from the discharge port 41 hits the blades 32 of the rotary plate 31 at right angles and pushes them.

This causes the rotating plate 31 to rotate slightly. Due to this rotation, a new blade 32 is positioned in front of the discharge port 41. This blade 32 is further pushed by the hot water discharged from the discharge port 41. By repeating this operation, the rotating plate 31 rotates in one direction. On the other hand, the discharge port 4
After pushing the blade 32 on the rotary plate 31, the hot water discharged from the rotary plate 31 accumulates on the rotary plate 31 because it is surrounded by a wall 33 provided around the entire circumference. Since the rotary plate 31 is eccentrically provided with one spout 36, the hot water on the rotary plate 31 falls into the basket 45 along with the rotation of the spout 36 as the rotary plate 31 rotates.

Further, since the flow of hot water by the pump 42 is continuous, the hot water falling from the spout 36 falls into the basket 46 while rotating continuously. As a result of the above, the rotary plate 31 causes hot water to continuously fall from the spout 36 while rotating. This is exactly how people make coffee by hand. When all the water in the water tank 4 has been sent, the pump 42 is stopped. The coffee accumulated in the glass container 43 is kept warm by the heating device 1 controlled by the automatic temperature controller 22.

Since the hot water falling from the spout 36 falls uniformly onto the coffee grounds 24 in the basket 46, coffee can be extracted efficiently and unnecessary components can be prevented from being extracted. As a result, delicious coffee of constant quality can be obtained.

In the above embodiment, the pouring port 36 is provided at one location, but as long as the flow of hot water is continuous, a plurality of pouring ports 36 may be provided without causing any difference in function and effect. Further, in the embodiment, the heating device 1 is provided between the pump 42 and the discharge port 41, but the water tank 4 may be directly heated to serve as a hot water storage tank, and the pump 42 may supply hot water. It is something.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention, there is provided a water tank, a heating device, a water supply device communicating with the water tank, a basket with an upper opening, and a A roughly disc-shaped rotating plate with a plurality of blades on its upper surface, a wall erected around the entire circumference, and an eccentric spout, and a shaft that holds this rotating plate so that it can rotate freely in the horizontal direction. It is generally said to be a good way to make delicious coffee because it consists of a rod and a discharge port that communicates with the water supply device at one end and opens at the other end near the blade on the rotary plate. It is possible to pour hot water continuously in the same way as a person pours hot water by hand and drips it, and it is also possible to pour hot water evenly over coffee grounds, resulting in delicious coffee. .

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an electric coffee boiler showing an embodiment of the present invention, Fig. 2 is an enlarged top view of the main parts of the same electric coffee boiler, and Fig. 3 is a diagram showing a conventional electric coffee boiler. FIG. 1...Heating device, 4...Water tank, 3
1... Rotating plate, 32... Blade, 33
...Wall, 36...Pouring spout, 3γ...
...Axis rod, 41...Discharge port, 42...
Bon 7', 45...Basket. Name of agent: Patent attorney Toshio Nakao and one other person
Heating device 4 - 7-piece gunk 8 - Rotating plate 32 - Blade 33 - Wire 36 - - Rasho tone 5 mouth 37 - Shaft rod Fig. 1 4l - Uit mouth 4z - Pump 6 - No. Figure 2 4f Figure 3

Claims (1)

[Claims] A water tank, a heating device, a water supply device communicating with the water tank, a basket with an open top, a plurality of blades located above the basket, and a wall erected around the entire circumference. A generally disc-shaped rotating plate having an eccentric pouring hole, a shaft rod that holds the rotating plate rotatably in the horizontal direction, one end communicating with the water supply device, and the other end above the rotating plate. An electric coffee brewer comprising: a discharge port opened near the blade; and a discharge port opened near the blade.