JPH10137124A - Beverage extracting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beverage extracting device which can prevent soiling around the device with a mixture in case that the beverage extracting operation is stopped due to an abnormal state such as a power cut, program runaway or the like during a mixing or extracting process and that the abnormal state is canceled subsequently. SOLUTION: In this beverage extracting device, when beverage extracting operation of a beverage extraction device is stopped and then an abnormal stage cancel signal is input from a main control part to a control part, the control part decides operation state of a cylinder 20 based on signals of a first, second and third process detecting sensors 36A, 36B and 36C, respectively. When the control part decides that the mixture is in an extracting room 20d, only liquid constituted the mixture in the extracting room 20d is disposed and the cylinder 20 is moved to the stand-by position P1 .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beverage extracting device applied to a cup-type vending machine for extracting coffee, black tea, oolong tea, green tea and the like from raw materials and selling the cups.

[0002]

2. Description of the Related Art As a conventional beverage extracting device, for example,
There is one disclosed in Japanese Utility Model Laid-Open Publication No. 61-118526. This beverage extraction device 100, as shown in FIG.
A cylinder 101 that is supported so as to be able to move up and down and stirs and discharges a mixture of powdered raw material such as coffee powder and the like supplied from above and hot water, and is disposed below the cylinder 101,
A filter 102 for filtering the mixture discharged from the cylinder 101, a beverage container 104 having a rubber packing 103 for receiving the beverage extracted by the filtration of the filter 102, and a beverage container 104 connected to the beverage container 104 to supply the beverage to the cup side. And a control mechanism (not shown) for controlling each part of the present apparatus 100. . Cylinder 10
1 is a stirring chamber 101b in which a step of stirring the powdery raw material and hot water supplied from a supply port 101a provided above is performed, and a beverage extraction step in which the mixture is discharged from a discharge port 101c provided below. Communication port 101e with the extraction chamber 101d
And are formed in communication. The communication port 101e is
It is opened and closed by a valve 107, and an air pipe 109 for introducing pressurized air from an air pump 108 is connected to the extraction chamber 101d.

[0003] The beverage brewing apparatus 100 configured as described above.
In, when a sales signal is input to the control unit, the control unit drives an extraction drive motor (not shown). As shown in FIG. 14, the cylinder 101 is lowered from the standby position P by the extraction drive motor, and the lower end of the cylinder 101 contacts the beverage receiver 104. Next, the powder material and hot water are supplied to the supply port 101.
When supplied from a, the control unit sends pressurized air from the air pump 108 to the stirring chamber 101b via the air pipe 109, the extraction chamber 101d, and the communication port 101e. Stir chamber 1
01b is mixed with an air pump 10
Stirred by pressurized air from 8. When the mixture is sufficiently stirred, the control unit stops driving the air pump 108. The mixture in the stirring chamber 101b flows to the extraction chamber 101d through the communication port 101e. Next, the controller
As shown in (5), the extraction drive motor is driven again. The valve 107 is raised by the extraction drive motor and the communication port 101 is raised.
Close e. The control unit sends pressurized air from the air pump 108 to the extraction chamber 101d via the air pipe 109. The mixture in the extraction chamber 101d is pressure-fed to the filter 102 side by pressurized air, and is filtered by the filter 102. The control unit drives a supply motor (not shown) to
b is rotated by a predetermined angle, the pressing of the beverage supply tube 105 by the pressing plate 106a is released, and the beverage supply tube 105 is opened. The beverage filtered by the filter 102 is supplied to the cup side via the beverage supply tube 105. . Next, the control unit moves the cylinder 101 to the waste disposal position P ′,
The slag remaining on the top is discarded by sliding the slag removing member.
When the beverage extraction operation is completed in this way, the control unit
The extraction drive motor is driven to raise the cylinder 101, and the valve 107 is raised to return the communication port 101e to the open standby position P.

[0004]

However, according to the conventional beverage extraction apparatus 100, the abnormality is removed after the beverage extraction operation is interrupted by an abnormality such as a power failure or a program runaway during the stirring process or the extraction process. The control unit unconditionally raises the cylinder 101 and returns the cylinder 101 to the standby position P, so that the mixture in the cylinder 101
There is a problem that it flows all over the top and pollutes the surroundings.

[0005] Accordingly, an object of the present invention is to remove the abnormality after the interruption of the beverage brewing operation due to an abnormality such as a power failure or a program runaway during the stirring process or the extraction process, and then the surroundings are stained by the mixture. It is an object of the present invention to provide a beverage extraction device that can avoid the above.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a beverage brewing apparatus for holding a beverage brewing chamber at a standby position by turning on a power supply or ending a beverage brewing operation, and the like. When the beverage brewing operation is interrupted due to an abnormality such as a runaway and the abnormality is released, the abnormality elimination detecting means for detecting the elimination of the abnormality and outputting an abnormality elimination signal; and wherein the beverage brewing chamber is in the standby position. A stirring position for stirring the beverage ingredients and hot water, and a position signal generating means for outputting a position signal indicating that the beverage is at the extraction position for extracting the beverage with the hot water, and when the abnormality release signal is input, the position signal When it is determined that the beverage extraction chamber is located at a position other than the standby position, only the liquid of the mixture of the beverage ingredient and the hot water is discarded from the beverage extraction chamber to the outside. Providing a beverage extraction apparatus characterized by having the beverage extraction chamber from the control means for moving to the standby position. According to the above configuration, when the abnormality that causes the beverage extraction operation is interrupted after being interrupted,
When the control unit determines that the beverage brewing chamber is located at a position other than the standby position based on the position signal output from the position signal generating unit, the possibility that the mixture is present in the beverage brewing chamber is high. The means causes only the liquid of the mixture to be discarded to the outside from the beverage extraction chamber, and then causes the beverage extraction chamber to wait at the standby position.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram of a beverage extraction device according to an embodiment of the present invention. The beverage extraction device 1 includes an extraction unit 2 that extracts a beverage from a mixture of powdered raw materials such as coffee powder and hot water, and a disposal unit 4 that discards slag and the like.
And an air pump 5 for sending pressurized air to each part of the device 1.

The extraction unit 2 is supported by a guide rail (not shown) so as to be movable up and down, and is a cylinder 20 which agitates a mixture of powdered raw material and hot water supplied from above and discharges the mixture downward.
A paper filter 21 disposed below the cylinder 20 and filtering the mixture discharged from the cylinder 20;
And a beverage receiver 22 for receiving the beverage extracted by the filtration of the paper filter 21.

The cylinder 20 is provided with a supply port 20 provided above.
A mixing chamber 2 in which the powder raw material supplied from a is mixed with hot water
0b, and an extraction chamber 2 in which a mixture of powdered raw material and hot water is discharged from a discharge port 20c provided below to perform a beverage extraction process.
0d is communicated with the communication port 20e. The communication port 20e is opened and closed by a valve 23, and the extraction chamber 20d is provided with an introduction port 20f for introducing pressurized air from the air pump 5.

The paper filter 21 includes a rotatable shaft 2.
1A is set in the form of a roll, and is configured to be pulled out to the left in FIG. 1 by driving of a disposal motor 40 of the disposal unit 4 described later. The paper filter 21 has a filter detection lever 21B whose base end is rotatably supported and whose middle portion or tip end is always in contact with the roll-shaped paper filter 21;
A filterless sensor such as a microswitch that outputs a detection signal indicating the absence of the paper filter 21 to a control unit 6 to be described later and provides an alarm output or the like, when the filter detection lever 21B rotates and performs a switching operation when the remaining amount of the filter becomes low. 2
1C.

The beverage receiver 22 has an opening 22a at an upper portion, and when the cylinder 20 comes into contact with the periphery of the opening 22a,
A rubber packing 22A for preventing the mixture from leaking is provided, a roller 22B for changing the running direction of the paper filter 21 is provided at an end portion, and a beverage supply pipe 22C for supplying a beverage to the cup side, and a beverage are provided at a lower portion. Waste pipe 22 for disposal
D is provided. In addition, a beverage supply solenoid valve 53 is interposed in the beverage supply pipe 22C.

The extraction unit 2 includes an extraction motor 24 and output shafts 25a and 25b projecting from both sides, respectively, and a reduction gear 25 for reducing the rotation speed of the extraction motor 24 to a predetermined rotation speed.
A support plate 26 supporting one end of one output shaft 25a by a bearing 26a, a cylinder cam 27A and a valve cam 27B fixed to the one output shaft 25a,
A cylinder driving plate 28A for driving the cylinder 20, a valve driving plate 28B for driving the valve 23, and a cylinder cam follower 29A attached to the cylinder driving plate 28A
The two ends are respectively locked by a valve cam follower 29B attached to the valve driving plate 28B, a locking member 28a attached to the cylinder driving plate 28A, and a locking member 28b attached to the valve driving plate 28B. The driving plate 28A and the valve driving plate 28B are pulled toward each other to move the cylinder cam follower 29A and the valve cam follower 29B to the cylinder cam 27A and the valve cam 27.
B, a plurality of connecting members 31A, 31B, 31C connecting the cylinder 20 and the cylinder driving plate 28A, and a lever 32 rotatably connecting the valve 23 by a pin 32a on the distal end side. When,
Both ends are respectively connected to a connecting member 33 attached to the valve driving plate 28B and rotatably connecting the lever 32 by a pin 32b, and a locking member 28c attached to the rear end side of the lever 32 and the valve driving plate 28B. And a stopped extension coil spring 34. The extraction unit 2 is configured such that a series of steps of the stirring step, the extraction step, and the slag disposal step are completed by the output shafts 25a, 25b and the output shaft 41a making one rotation.

A process detecting mechanism for detecting the details of the process is provided on the other output shaft 25b side of the speed reducer 25. That is, the other output shaft 25b of the speed reducer 25 is
And the third process detection plates 35A, 35B, 35C are attached, and the first, second, and third process detection plates 35A, 35A are mounted.
Around the B, 35C, there are first, second, and third photo sensors such as photo sensors that detect the rotational position of the first, second, and third process detection plates 35A, 35B, 35C (for example, turn off by light shielding). Process detection sensors 36A, 36B, 36C
Has been arranged.

An air pipe 52 from the air pump 5 to an inlet 20f of the extraction chamber 20d via an upper air solenoid valve 50.
, And an air pipe 52 is connected to the beverage receiver 22 via a lower air solenoid valve 51.

FIG. 2 is a sectional view taken along line AA of FIG. The cylinder cam 27A and the valve cam 27B are fixed to one output shaft 25a by a key 25c, and the cam surfaces of the cylinder cam 27A and the valve cam 27B are formed as shown in FIG.

FIG. 3 is a perspective view of the process detecting mechanism. First
The process detection plate 35A has two protrusions 35a at approximately 90 ° C.
Are formed, and the second process detection plate 35B has approximately 70
° C projection 35a, and the third process detection plate 35C
A projection 35a of about 180 ° C. is formed in one place.

FIG. 4 is a perspective view of a main part of the disposal unit 4.
The disposal unit 4 includes a disposal motor 40 and a reduction gear 41 that reduces the rotation speed of the disposal motor 40 to a predetermined rotation speed.
The waste pipe 22D and the waste pipe closed detection board 42B attached to the output shaft 41a of the speed reducer 41 and the light blocking (for example, off) by the projection 42a of the waste pipe open detection plate 42A cause the waste pipe 22D to be closed. A waste pipe open detection sensor 43A such as a photo sensor that outputs an OFF signal indicating an open state (standby state), and an OFF light that indicates a closed state of the waste pipe 22D due to light shielding (for example, OFF) by the protrusion 42a of the waste pipe close detection plate 42B. A waste pipe closing detection sensor 43B such as a photo sensor for outputting a signal, and a pair of filter feed rollers 44, which are attached to the output shaft 41a with a notch 44a on the circumference and feed the paper filter 21 by a predetermined length. 44,
The paper filter 21 is moved to a pair of filter feed rollers 4.
A pair of guide rollers 45, 45 pressed by springs (not shown) on the sides 4, 44 and rotatably supported by a support shaft 46 a, and press-close the waste pipe 22 D between a fixed plate (see FIG. 1) 47. A pressing plate 46 composed of a leaf spring or the like and a pressing cam 48 attached to the output shaft 41a and having a protrusion 48a on the circumference for rotating the pressing plate 46 are provided.

FIG. 5 is a block diagram showing a control system of the beverage extracting apparatus 1. The beverage brewing apparatus 1 has a control unit 6 that controls each unit of the present apparatus 1. The control unit 6 includes the waste pipe open detection sensor 43A, the waste pipe close detection sensor 43B,
First, second and third process detection sensors 36A, 36
B, 36C, the filterless sensor 21C, the air pump 5, the upper air solenoid valve 50, the lower air solenoid valve 51, the beverage supply solenoid valve 53, the brewing motor 24, and the disposal motor 40, respectively, and furthermore, sales of brewed beverages A main control unit 7 for controlling is connected.

The main control unit 7 outputs a sales signal to the control unit 6 every time the extracted beverage is sold, and controls the beverage extraction. The beverage extraction operation is interrupted due to an abnormality such as a power failure or a program runaway. And then when the anomaly is removed,
It detects the release of the abnormality and outputs an abnormality release signal to the control unit 6 to perform the return control.

When the sales signal is input from the main control unit 7, the control unit 6 controls the extraction motor 24, the disposal motor 40 and the air pump 5 to control the beverage extraction, that is, the stirring step, the extraction step, and the waste disposal. When the abnormality release signal is input from the main control unit 7, only the liquid in the mixture in the extraction chamber 20d is discarded, and then the cylinder 20 is moved to the standby position P. Return control is performed.

Next, the operation of the beverage extracting apparatus 1 will be described with reference to FIGS. FIG. 6 is a diagram showing output signals of the first, second and third process detection sensors 36A, 36B and 36C. 7 to 13 are diagrams showing the operation of the present apparatus 1. FIG. 7 (a) shows the position of the main part (cylinder 20, valve 13, etc.), and FIG. 7 (b) shows the waste pipe open detection plate. 4
FIG. 2C shows the positions of a waste pipe closing detection plate 42B and a filter feed roller 44, and FIG.
FIG. 7D shows the positions of 7A and the valve cam 27B, and FIG.
Are the first, second and third process detection plates 35A, 35B,
It is a figure which shows the position of 35C.

[0022] In (1) a standby state (see FIG. 7) the standby state, the main part of the apparatus 1 is in the standby position P ₁ shown in FIG. 6, in the state shown in FIG. That is, the first, second and third process detection sensors 36A, 36A
6B and 36C are turned on, and the waste pipe open detection sensor 43A
Is off, and the waste pipe closing detection sensor 43B is on. There is a slight gap between the filter feed roller 44 and the guide roller 45 so that the paper filter 21 does not move at all even if the filter feed roller 44 rotates. The pressing plate 46 is in contact with the pressing cam 48 by the elastic force of the waste pipe 22D.

(2) Stirring Step (See FIGS. 8 and 9) When the sales signal is input from the main control unit 7, the control unit 6
When the second process detection sensor 36B is on, the first and third
Step detection sensor 36A, based on the ON 36C, performs a transition operation from the standby position P ₁ to the stirring position P _2. That is, the control unit 6 drives the disposal motor 40 to rotate in the normal direction (drive in which the output shaft 41a rotates to the left in FIG. 8A).
The drive torque of the disposal motor 40 is transmitted to the output shaft 41a via the speed reducer 41, and the output shaft 41a rotates forward by about 60 ° (left rotation in FIG. 8 (a)), as shown in FIG. 8 (a). As described above, the projection 48 a of the pressing cam 48 presses the pressing plate 46, so that the waste pipe 22 </ b> D is closed between the pressing plate 46 and the fixed plate 47. The waste pipe closed detection sensor 43B is shielded from light by the protrusion 42a of the waste pipe closed detection plate 42B, and outputs an OFF signal to the control unit 6. The control unit 6 stops driving the disposal motor 40 based on the OFF signal from the disposal pipe closed detection sensor 43B. Subsequently, the control unit 6 drives the extraction motor 24 to rotate in the normal direction (drive in which the output shaft 25b rotates leftward in FIG. 9D). The drive torque of the extraction motor 24 is transmitted to the output shafts 25a and 25b via the speed reducer 25, and the output shafts 25a and 25b rotate forward (to the left in FIG. 9D), as shown in FIG. 9C. As described above, when the cylinder cam 27A and the valve cam 27B rotate forward, the cylinder driving plate 28A and the valve driving plate 28B descend. When the cylinder driving plate 28A descends, the plurality of connecting members 31A,
The cylinder 20 descends via 31B and 31C, and the lower end of the extraction chamber 20d presses the paper filter 21 against the beverage receiver 22. On the other hand, when the valve driving plate 28B is lowered, the valve 23 is also lowered via the connecting member 33 and the lever 32. The first process detection sensor 36A is shielded from light by the first process detection plate 35A and outputs an off signal to the control unit 6. Subsequently, the second process detection sensor 36B outputs an ON signal to the control unit 6. When the second process detection sensor 36B is on, the control unit 6 controls the first process detection sensor 36A.
, The drive of the extraction motor 24 is stopped. The main part of the device 1 reaches the stirring position P ₂ shown in FIG. 6,
The state shown in FIG. 9 is obtained. In the state shown in FIG. 9, FIG.
As shown in the figure, the second and third process detection sensors 36B, 3B
6C is not shielded from light by the protrusions 35a of the second and third process detection plates 35B and 35C, and therefore outputs an ON signal to the control unit 6, respectively. When the second process detection sensor 36B is on, the control unit 6 performs the stirring process based on the first process detection sensor 36A being off and the third process detection sensor 36C being on. That is, the control unit 6 outputs a supply request signal of the powder raw material and the hot water to the main control unit 7. Under the control of the main controller 7, the powder raw material and the hot water are supplied to the supply port 20a of the mixing chamber 20b. The control unit 6 closes the beverage supply electromagnetic valve 53 and further opens the lower air electromagnetic valve 51 to drive the air pump 5 in accordance with the supply of the powder raw material and the hot water. The air pump 5 sends pressurized air to the beverage receiver 22 via the air pipe 52. This pressurized air is supplied to the paper filter 2
1 and flows into the extraction chamber 20d. When the pressurized air passes through the mixture in the extraction chamber 20d, the flow of the bubbles acts to agitate the mixture. By supplying pressurized air from below the paper filter 21, the elution of the powder raw material component into the hot water is promoted, and the beverage can be extracted in a short time.

(3) Extraction Step (See FIG. 10) When the stirring time set by the timer elapses, the control section 6 drives the extraction motor 24 to rotate forward. The driving torque of the extraction motor 24 is output via the reduction gear 25 to the output shafts 25a, 25b.
And the cylinder cam 27A and the valve cam 27B rotate forward. As shown in FIG.
Since the cam radius of A does not change, the cylinder 20 does not move up and down, but since the cam radius of the valve cam 27B increases, the valve 23 rises and closes the communication port 20e as shown in FIG. The third process detection sensor 36C includes:
The light is shielded by the third process detection plate 35 </ b> C and outputs an off signal to the control unit 6. Subsequently, the second process detection sensor 36
B outputs an ON signal to the control unit 6. When the second process detection sensor 36B is on, the control unit 6 stops driving the extraction motor 24 based on the off of the third process detection sensor 36C. The main part of the device 1 reaches the extraction position P ₃ shown in FIG. 6, a state shown in FIG. 10. In the state shown in FIG. 10, the first and second process detection sensors 36A and 36B are turned on, as shown in FIG. The control unit 6 controls the second
When the process detection sensor 36B is ON, the extraction process is performed based on the ON of the first process detection sensor 36A and the OFF of the third process detection sensor 36C. That is, the control unit 6
The upper air solenoid valve 50 is opened, the lower air solenoid valve 51 is closed, the beverage supply solenoid valve 53 is opened, the air pump 5 is driven, and pressurized air from the air pump 5 is passed through the air pipe 52 to the upper side of the extraction chamber 20d. It is supplied from the inlet 20f.
The mixture in the extraction chamber 20 d is pumped downward by pressurized air from the air pump 5 and filtered by the paper filter 21. The beverage filtered by the paper filter 21 is
The beverage is supplied to the cup via the beverage receiver 22 and the beverage supply pipe 22C. By sending the pressurized air to the extraction chamber 20d, the pressure inside the extraction chamber 20d increases and the mixture is pushed down to the paper filter 21 side, so that the mixture is separated into a beverage and a slag in a short time, and the filtration is performed efficiently. can do.

(4) Slag disposal process (see FIGS. 11 and 12) When the extraction time set by the timer elapses, the control unit 6
Drives the extraction motor 24 to rotate forward. The driving torque of the extraction motor 24 is output via the reduction gear 25 to the output shafts 25a, 25b.
And the cylinder cam 27A and the valve cam 27B rotate forward, and the cylinder driving plate 28A and the valve driving plate 28
B rises, and the cylinder 20 and the valve 23 rise to the top. First and third process detection sensors 36A, 36
C is shielded by the first and third process detection plates 35A and 35C, and outputs an OFF signal to the control unit 6. Then the second
The process detection sensor 36B outputs an ON signal to the control unit 6. When the second process detection sensor 36B is on, the control unit 6 stops driving the extraction motor 24 based on the off of the first and third process detection sensors 36A and 36C. The main part of the device 1 reaches the dregs discarding position P ₄ shown in FIG. 6,
The state shown in FIG. 11 is obtained. In the state of FIG. 11, FIG.
As shown in (2), the second process detection sensor 36B is turned on, and the residue 7 remains on the paper filter 21. When the second process detection sensor 36B is on, the control unit 6 performs the slag disposal process based on the off of the first and third process detection sensors 36A and 36C. That is, the control unit 6 drives the disposal motor 40 to rotate forward. The drive torque of the disposal motor 40 is transmitted to the output shaft 41a via the speed reducer 41, the output shaft 41a rotates forward, and the filter feed roller 44 rotates to draw out the paper filter 21. When the slag 7 on the paper filter 21 passes through the roller 22B, FIG.
As shown by the imaginary line in FIG. 2 (a), the slag 7 breaks off, separates from the paper filter 21, and falls into a waste bucket (not shown). The waste pipe open detection sensor 43A is shielded from light by the waste pipe open detection sensor 42A and outputs an off signal to the control unit 6. The control unit 6 stops driving the disposal motor 40 based on the OFF signal from the disposal pipe open detection sensor 43A.
The main part of the device 1 is in the state shown in FIG.

(5) Return Operation to Standby State When the scrap disposal time set by the timer elapses, the control unit 6
Drives the extraction motor 24 and the disposal motor 40 forward. The main part of the device 1 returns to the standby state shown in FIG. Thereafter, each time a sales signal is input to the control unit 6,
The operations of (1) to (5) are repeated.

(6) When an abnormality occurs during the above beverage extraction operation (a) When an abnormality occurs in the state of FIG. 9 and the beverage extraction operation is interrupted (see FIG. 6 (a)) The state of FIG. When the abnormality is released and the beverage extraction operation is interrupted, the abnormality is released, and when the abnormality release signal is input from the main control unit 7, the control unit 6 detects the first, second, and third steps. The operation state of the cylinder 20 is determined based on the signals of the sensors 36A, 36B, 36C. Here, the first
Since the process detection sensor 36A is off and the second and third process detection sensors 36B and 36C are on (see FIG. 6).
(A)), the control unit 6 determines that the mixture exists in the extraction chamber 20d, and drives the disposal motor 40 in the reverse direction.
When the disposal motor 40 rotates in the reverse direction, the pressing cam 48
The waste pipe 22D is opened by reversing 0 ° and the pressing of the waste pipe 22D by the pressing plate 46 is released. Waste pipe open detection sensor 4
3A is shielded from light by the waste pipe open detection plate 42A and outputs an off signal to the control unit 6. The control unit 6 stops driving the disposal motor 40 based on the OFF signal from the disposal pipe open detection sensor 43A. Subsequently, the control unit 6 opens the upper air solenoid valve 50, drives the air pump 5, and sends pressurized air to the extraction chamber 20d. Only the liquid of the mixture in the extraction chamber 20d passes through the paper filter 21 and is discarded from the waste pipe 22D to a waste bucket (not shown). When the liquid waste time set by the timer has elapsed, the control unit 6, the extract motor 24 driven to rotate forward, return the cylinder 20 to the standby position P _1. Further, the controller 6 drives the disposal motor 40 to rotate forward, rotates the output shaft 41a _once, and returns the output shaft 41a to the standby position P1.
The slag on the paper filter 21 is discarded into a waste bucket.

(B) Transition from the state of FIG. 9 to the state of FIG.
Occurs when the extraction operation is interrupted (see FIG. 6).
(See (b).) An abnormality occurred in the process from the state of FIG. 9 to the state of FIG.
After the beverage brewing operation is interrupted,
An abnormality release signal is input from the main control unit 7 to the control unit 6.
And the control unit 6 controls the first, second and third process detection sensors.
Operation of the cylinder 20 based on the signals of the sensors 36A and 36C.
Determine the status. Here, the first and second process detections
The sensors 36A and 36B are off, and the third process detection sensor 3
6C is ON (FIG. 6 (b)), the control unit 6 is still ON.
Is similar to the case of stopping in the state of FIG.
2D is closed, the communication port 20e is open, and the extraction chamber 20
It is determined that a mixture exists in d.
40 is driven in reverse to open the waste pipe 22D. Extraction room 2
The mixture within 0d passes through the paper filter 21 and is discarded.
The waste pipe 22D is discarded into a waste bucket. Set by timer
After the elapse of the set liquid disposal time, the control unit 6 sets the extraction mode.
The cylinder 24 in the standby position P ₁Back to
You. Further, the control unit 6 drives the disposal motor 40 to rotate forward.
Then, the output shaft 41a is rotated by one rotation so that the standby position P₁Return to
The slag on the paper filter 21 is discarded into a waste bucket.
You.

(C) When an abnormality occurs in the state of FIG. 10 and the beverage extracting operation is interrupted (see (c) of FIG. 6) After an abnormality occurs in the state of FIG. 10 and the beverage extracting operation is interrupted, When the abnormality is released and the abnormality release signal is input from the main control unit 7 to the control unit 6, the control unit 6 performs the operation based on the signals of the first, second, and third process detection sensors 36A, 36B, 36C. Operating state of the cylinder 20 is determined. Here, the first and second process detection sensors 36A, 36B
Is ON and the third process detection sensor 36C is OFF (FIG. 6 (c)), so that the controller 6 determines that the mixture exists in the extraction chamber 20d. Further, since the communication port 20e is in a closed state, it is determined that the extraction chamber 20d is in a closed state. The control unit 6, as shown in FIG.
Is opened, and the upper air solenoid valve 50 is opened, and the extraction chamber 2 is opened.
0d is opened to the atmosphere, and the mixture in the extraction chamber 20d is discarded from the waste pipe 22D to a waste bucket. When the liquid disposal time set by the timer elapses, the control unit 6 sets the extraction motor 24
Driven to rotate normally, returning the cylinder 20 to the standby position P _1.

According to the above-described embodiment, when the abnormality is removed after the interruption of the beverage extraction operation due to an abnormality such as a power failure or a program runaway during the stirring process or the extraction process, the cylinder 20 is extracted. After discarding only the liquid of the mixture in the chamber 20d, the cylinder 20 is moved to the standby position P.
Since it is returned to ₁ , the surroundings can be prevented from being soiled by the mixture. In particular, since the waste pipe open detection sensor 43A and the waste pipe close detection sensor 43B provided near the beverage receiver 22 can be prevented from being contaminated by the mixture, reliability is ensured. Also, in order to detect four positions (standby position, stirring position, extraction position, and waste disposal position), two first and third process detection sensors 35A, 35A,
35C is sufficient, but the second process detection sensor 35B
Since the output states of the other two sensors 35A and 35C are checked when the second process detection sensor 35B is on, the positional accuracy of the detection plates 36A, 36B and 36C may be low. Therefore, the detection plates 36A, 36B, 36
Processing and assembly of C become easy. For example, in FIG.
The rise a of the signal of the first process detection sensor 35A and the third rise
Even if the falling b of the process detection sensor 35C is slightly shifted, the extraction position can be recognized. Further, the cost can be reduced as compared with the absolute value type encoder.

Next, another embodiment of the present invention will be described. In this embodiment, in the above cases (a) and (b), the extraction motor 40 is driven until the state (c), the upper air solenoid valve 50 is opened, the waste pipe 22D is opened, and the air pump 5 is opened. Only the liquid of the mixture in the extraction chamber 20d is discarded from the waste pipe 22D to the waste bucket by the pressurized air from the apparatus. Even with this configuration, the same effect as described above can be obtained.

The present invention is not limited to the above embodiment, and various embodiments are possible. For example, an absolute value type encoder may be used as a sensor for detecting a process.

[0033]

As described above, according to the present invention, when the beverage brewing operation is interrupted and the cause of the abnormality is eliminated, the beverage brewing operation is stopped at a position other than the standby position based on the position signal of the beverage brewing chamber. If it is determined that the beverage is extracted, only the liquid of the mixture in the beverage extraction chamber is discarded and then placed in the standby position. When the abnormality is removed after the interruption of the process, the surroundings can be prevented from being stained by the mixture.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a beverage extraction device according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a perspective view of a process detection mechanism according to the present invention.

FIG. 4 is a perspective view of a main part of a disposal unit according to the present invention.

FIG. 5 is a block diagram showing a control system according to the present invention.

FIG. 6 is a diagram showing output signals of first, second, and third process detection sensors according to the present invention.

FIG. 7 is a view showing a standby state of the beverage extraction device according to the present invention.

FIG. 8 is a diagram showing a closed state of a waste pipe of the beverage extraction device according to the present invention.

FIG. 9 is a view showing a stirring step of the beverage extraction device according to the present invention.

FIG. 10 is a diagram showing an extraction process of the beverage extraction device according to the present invention.

FIG. 11 is a diagram showing a start state of a slag disposal process of the beverage extraction device according to the present invention.

FIG. 12 is a view showing an end state of a slag disposal process of the beverage extraction device according to the present invention.

FIG. 13 is a diagram showing a beverage disposal state of the beverage extraction device according to the present invention.

FIG. 14 is a diagram showing a stirring process of a conventional beverage extraction device.

FIG. 15 is a diagram showing an extraction process of a conventional beverage extraction device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Beverage extraction apparatus 2 Extraction part 4 Disposal processing part 5 Air pump 6 Control part 20 Cylinder 20a Supply port 20b Mixing chamber 20c Discharge port 20d Extraction chamber 20e Communication port 20f Inlet 21 Paper filter 21A Axis 21B Filter detection lever 21C Filterless sensor 22 Beverage receiver 22A Rubber packing 22B Roller 22C Beverage supply pipe 22D Waste pipe 22a Opening 23 Valve 24 Extraction motor 25 Reducer 25a, 25b Output shaft 25c Key 26 Support plate 26a Bearing 27A Cylinder cam 27B Valve cam 28A Cylinder drive plate 28B Valve drive plate 28A , 28b Locking member 29A Cylinder cam follower 29B Valve cam follower 30 Extension coil spring 31A, 31B, 31C Connecting member 32a Pin 32 Lever 32b Pin 33 Binding member 34 Tension coil spring 40 Disposal motor 41a Output shaft 35A First process detection plate 35B Second process detection plate 35C Third process detection plate 35a Projection 36A First process detection sensor 36B Second process detection sensor 36C Third process detection sensor 40 Discard processing motor 41 Reduction gear 41a Output shaft 42A Waste pipe open detection plate 42B Waste pipe close detection plate 42a Projection 43A Waste pipe open detection sensor 43B Waste pipe close detection sensor 44 Filter feed roller 44a Off Notch 45 Guide roller 46a Support shaft 47 Fixing plate 46 Pressing plate 48 Pressing cam 48a Projection 50 Upper air solenoid valve 50 51 Lower air solenoid valve 52 Air pipe 53 Beverage supply solenoid valve

Claims (3)

[Claims] 1. A beverage brewing apparatus in which a beverage brewing room is kept at a standby position by turning on a power supply or ending a beverage brewing operation, etc., wherein the beverage brewing operation is interrupted due to a power failure, runaway of a program or the like. When the abnormality is eliminated, abnormality cancellation detection means for detecting the cancellation of the abnormality and outputting an abnormality cancellation signal, and the beverage extraction chamber is in the standby position, the stirring position for stirring the beverage material and the hot water, and the hot water. Position signal generating means for outputting a position signal indicating that the beverage is at the extraction position, and when the abnormality release signal is input, the beverage extraction chamber is located at a position other than the standby position based on the position signal. When it is determined that the beverage extraction chamber is disposed of, only the liquid of the mixture of the beverage raw material and the hot water is discarded from the beverage extraction chamber to the outside, and then the beverage extraction chamber is moved to the standby position. Beverage extraction apparatus characterized by comprising a control means. 2. The apparatus according to claim 1, wherein said position signal generating means comprises:
Outputting a first position signal that changes between “1” and “0” among the stirring position, the extraction position, and a slag disposal position for discarding the remaining slag after extracting the beverage from the mixture. And a second position signal of "1" or "0" for a predetermined time period is output at each of the standby position, the stirring position, the extraction position, and the slag disposal position.
And outputs an ON signal or an OFF signal at the standby position and the agitating position, and outputs 1/2 of the first position signal.
The beverage brewing apparatus according to claim 1, further comprising a third sensor that outputs a third position signal that changes in a cycle of (b). 3. The beverage brewing apparatus according to claim 2, wherein the second sensor outputs the second position signal at a predetermined time after the change timing of the first position signal.