JP3621768B2 - Liquid extraction device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid extraction apparatus that extracts a predetermined amount of liquid from a liquid container.
[0002]
[Prior art]
Conventionally, for example, in cup dispensers and cup-type vending machines that extract and provide beverage liquids in cups, low acid beverage raw material liquids and neutral beverage raw material liquids that are easily oxidized by coffee, tea, oolong tea, etc. or bacteria Etc. in a bag-like liquid container under aseptic conditions and using a so-called back-in box in which this liquid container is built in a cardboard box. There is something to be extracted.
[0003]
As a liquid extraction apparatus using such a back-in box, for example, as described in Japanese Patent Application Laid-Open No. 6-293348 or Japanese Patent Application Laid-Open No. 6-293393, a predetermined amount from the liquid container of the back-in box. A structure in which the raw material liquid is extracted is known.
[0004]
This liquid extraction apparatus has an extraction passage in which the flexible extraction port portion of the liquid container is disposed facing downward, and is substantially on one side wall side of the extraction passage with respect to the other side wall facing the extraction passage. A pressing plate is provided so as to be movable in the vertical direction, and a pair of pinch portions are provided so as to be able to advance and retract from the upper and lower portions of the pressing plate into the extraction passage. The pressing plate is moved to two positions, ie, an advance position that advances into the extraction passage and a retract position that retreats from the extraction passage by the operation of the pressing solenoid. The pair of pinch portions are integrally supported, and are swung to two positions where one of them moves forward and the other moves backward by the operation of the pinch solenoid. Close by crimping to the other side wall.
[0005]
In the extraction standby state, the upper pinch part is retracted to open the upper side of the extraction opening of the liquid container, and the lower pinch part is advanced to close the lower side of the extraction opening of the liquid container and press. Place the plate in the retracted position. Thereby, a certain amount of the raw material liquid in the liquid container is drawn into the extraction port.
[0006]
Subsequently, when the extraction operation is started, the upper pinch portion advances by the operation of the pinch solenoid and closes the upper side of the extraction port portion, and the lower pinch portion moves backward to move the lower side of the extraction port portion. At the same time, the pressing plate moves to the advanced position by the operation of the pressing solenoid and presses the extraction port. As a result, a certain amount of the raw material liquid that has been drawn into the extraction port is extracted from the lower extraction port of the extraction port.
[0007]
Subsequently, the operation of the pinch solenoid causes the upper pinch part to recede to open the upper side of the extraction port part and the lower pinch part to advance to close the lower side of the extraction port part. By operation, the pressing plate moves to the retracted position. Thereby, it returns to the extraction standby position, and a certain amount of the raw material liquid in the liquid container is drawn into the extraction port.
[0008]
[Problems to be solved by the invention]
However, in the conventional liquid extraction device, the raw material liquid in the liquid container is drawn into the extraction port by moving the pressing plate to a predetermined retracted position corresponding to the predetermined amount of intake. When the amount of setting is small and the pressing plate does not retract too much, or when the remaining amount of the raw material liquid in the liquid container decreases, even if the pressing plate is retracted to the predetermined retracted position corresponding to the predetermined amount of loading, There is a case where a corresponding amount of the raw material liquid is not drawn into the extraction port within a predetermined time, and there is a problem that the quantitative property of the raw material liquid varies in a decreasing direction.
[0009]
Further, when the pressing plate is retracted to the predetermined retracted position corresponding to the predetermined liquid drawing amount, even if the press plate overruns to the position past the predetermined retracted position, no countermeasure is taken for it, In this case, there is a problem in that the quantitative property of the raw material liquid varies in the increasing direction.
[0010]
The present invention has been made in view of the above points, and can reliably draw a predetermined amount of liquid from the liquid container into the extraction port, prevent variations in the amount of extraction, and without extending the time. An object of the present invention is to provide a liquid extraction apparatus capable of extracting a fixed amount of liquid within a predetermined extraction time in a normal range.
[0011]
[Means for Solving the Problems]
The liquid extraction apparatus according to claim 1, wherein an extraction passage body provided with an extraction passage in which a flexible extraction port portion of a liquid container for containing a liquid is disposed downward is provided, and one side wall of the extraction passage And is provided so as to be movable in a substantially vertical direction with respect to the other side wall facing the extraction passage, and when retreating out of the extraction passage, an amount of liquid corresponding to the retraction amount is drawn from the liquid container to the extraction port, A pressure plate for extracting the liquid that has been drawn into the extraction port when moving forward into the extraction passage, a pressure plate driving means for moving the pressure plate forward and backward with respect to the extraction passage, and an upper and lower portion of the pressure plate in the extraction passage. A pair of pinch portions that are closed by pressing the inlet portion and the outlet portion of the extraction port portion of the liquid container to the other side wall of the extraction passage when moving forward, and selecting between the pair of pinch portions A pinch drive means for advancing one of them to the closed position of the extraction port and retreating the other to the open position of the extraction port, a detection means for detecting the moving position of the pressing plate, and In a state where the upper pinch part is moved to the open position by the pinch driving means and the lower pinch part is moved to the closed position, the pressing plate is moved by the pressing plate driving means to a predetermined amount corresponding to a predetermined liquid suction amount. The retraction position is added to the retraction position to which the surplus amount of ingestion is added, and then the intrusion control means for advancing the pressing plate by the amount of surplus ingestion amount, and the pinch driving means at the time of extraction after the liquid is ingested To move the upper pinch portion to the closed position and move the lower pinch portion to the open position. Characterized in that it comprises an extraction control means for advancing the door.
[0012]
In the basic extraction operation, for example, in the extraction standby state, the upper pinch part is retracted to open the inlet part of the extraction opening part of the liquid container, and the lower pinch part is advanced to exit the extraction outlet part. The part is closed and the pressing plate is advanced to press the extraction port. In order to extract the liquid contained in the liquid container from this extraction standby state, first, the pressing plate is retracted, and the liquid in the liquid container is drawn into the extraction port. Subsequently, the upper pinch part is advanced to close the inlet part of the extraction port part, the lower pinch part is retracted to open the outlet part of the extraction port part, and the pressing plate is advanced to extract. By pressing the mouth portion, a predetermined amount of liquid drawn into the extraction mouth portion is extracted. Subsequently, the upper pinch part is retracted to open the inlet part of the extraction port part of the liquid container, and the lower pinch part is advanced to close the outlet part of the extraction port part to enter an extraction standby state. Return and complete one liquid extraction operation.
[0013]
Then, after the pressing plate is moved back to the retracted position obtained by adding the surplus amount of ingestion from the predetermined retreating position corresponding to the predetermined amount of liquid ingestion, the liquid is obtained by advancing the pressing plate by the surplus amount of ingestion. After a larger amount of liquid is drawn from the liquid container into the extraction port, a larger amount is drawn back into the liquid container and a predetermined amount of liquid is drawn into the extraction port. For example, even when the setting of the extraction amount is small and the pressing plate does not retract so much or when the remaining amount of the raw material liquid in the liquid container is reduced, a predetermined amount of intake from the liquid container to the extraction port is obtained. Invoke liquid.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a liquid extraction apparatus of the present invention will be described with reference to the drawings.
[0015]
FIG. 7 shows a configuration diagram of a beverage extractor to which the liquid extraction device is applied. In this beverage extractor, the beverage raw material liquid is extracted into the cup 2 disposed in the extraction unit 1 on the front surface of the main body (not shown), and hot water or cold water is extracted. Is mixed to make a diluted beverage.
[0016]
In the extraction of the raw material liquid, a plurality of different types of raw material liquids are accommodated, and in this embodiment, two back-in boxes 3 are used, and a predetermined amount of the raw material liquid is extracted from each back-in box 3. A liquid extraction device 4 is used.
[0017]
A hot water supply device 5 is used for hot water extraction. The hot water supply device 5 includes a hot water tank 6 for storing hot water, tap water is supplied into the hot water tank 6 through a hot water supply electromagnetic valve 7, and water is supplied by a heater 8 disposed in the hot water tank 6. The water is heated from room temperature to a predetermined hot water temperature, and hot water in the hot water tank 6 is guided to the extraction unit 1 through the hot water electromagnetic valve 9 and extracted into the cup 2. The hot water tank 6 includes a hot water temperature sensor 10 for detecting the temperature of hot water at a height corresponding to the extraction position from the hot water tank 6, a heater sensor 11 for detecting the temperature of hot water near the heater 8, and the hot water tank 6. A float switch 12 for detecting the amount of stored hot water and a drain cock 13 for draining water from the hot water tank 6 are provided.
[0018]
A cold water supply device 14 is used for extraction of cold water. The cold water supply device 14 includes a cold water tank 15 in which cooling water is stored, and the cooling water is cooled to a predetermined water temperature by the cooling unit 16. The cooling unit 16 includes a cooling cycle 21 including a compressor 17 for compressing a refrigerant, a condenser 19 having a heat dissipating fan 18, and an evaporator 20 disposed in the cold water tank 15. A cooling pipe 22 is disposed in the cold water tank 15, and tap water is supplied to the cooling pipe 22 through a cold water supply electromagnetic valve 23, a pressure reducing valve 24, and a water amount adjustment valve 25, and the cold water cooled through the cooling pipe 22 is cooled water. It is guided to the extraction unit 1 through the electromagnetic valve 26 and extracted into the cup 2. In the cold water tank 15, a stirring screw 28 that is rotated by the motor 27 to stir the cooling water, a water temperature sensor 29 that detects the temperature of the cold water in the cold water tank 15, and a decrease in the cooling water stored in the cold water tank 15 are detected. There are provided a float switch 31, a drain cock 32 for draining water from the cold water tank 15, and the like.
[0019]
FIG. 5 is a front view of the liquid container of the back-in box 3, and FIG. 6 is a perspective view of the back-in box 3. The back-in box 3 includes a liquid container 41 and a cardboard box 42 that stores the liquid container 41.
[0020]
The liquid container 41 is formed of a material having high gas barrier properties and flexibility, for example, a multilayer film of polyethylene, an adhesive layer, an eval, an adhesive layer, and a polyethylene, and a liquid storage bag portion 43 for storing a beverage raw material liquid and the liquid container bag 43 An extraction port 44 for extracting the raw material liquid in the liquid storage bag 43 is provided. A filling port 46 sealed with a sealing lid 45 is integrally attached to the liquid storage bag portion 43. The extraction port portion 44 is a quantitative extraction bag portion 47, an inlet portion 48 that communicates the quantitative extraction bag portion 47 and the liquid storage bag portion 43, and an outlet portion that communicates with the opposite side of the inlet portion 48 of the quantitative extraction bag portion 47. 49. The liquid container 41 uses two multilayer films of a front wall and a back wall, and the periphery thereof is welded via a heat seal part 50, and the whole is formed in a sealed state. Also, set holes 51 for positioning and attaching to the liquid extraction device 4 are formed at the four corners of the heat seal portion 50 at the periphery of the quantitative extraction bag portion 47 of the extraction port portion 44. When filling the liquid container 41 with the beverage raw material liquid, the base end portion of the inlet portion 48 is sandwiched by a detachable pin or the like as shown by a broken line a in FIG. The raw material liquid is closed so as not to flow out, and the raw material liquid of the beverage is filled with an aseptic filling machine through the filling port 46 of the liquid storage bag part 43.
[0021]
A perforation 53 is formed in the cardboard box 42 so that a window 52 for drawing out the extraction port 44 of the liquid container 41 can be opened, so that the extraction port 44 can be pulled out from the window 52 to the outside. The back-in box 3 is formed by accommodating the liquid container 41 in a folded state in the cardboard box 42. In use, the perforation 53 is broken to open the window 52, and the extraction port 44 is pulled out as shown by a two-dot chain line in FIG.
[0022]
FIG. 1 is a cross-sectional view of the liquid extraction device 4 as viewed from the side, with the right side in the figure as the front surface and the left side as the rear surface. The liquid extraction device 4 includes an extraction passage body 61. The extraction passage body 61 includes a fixed frame plate 62 and a cover plate 63 that can be opened and closed with respect to the front surface of the fixed frame plate 62. An extraction passage 64 in which the extraction port portion 44 of the liquid container 41 is detachably mounted is formed through the gap between the frame plate 62 and the lid plate 63 in the vertical direction.
[0023]
In the center of the fixed frame plate 62, a substantially rectangular concave portion 66 that constitutes the incoming space 65 is formed, and a through hole 67 that penetrates the front and rear surfaces is formed in the center of the concave portion 66. A slit hole 68 that is horizontally long and penetrates in the front-rear direction along the upper and lower sides of the recess 66 is formed at positions adjacent to the upper and lower portions of the recess 66.
[0024]
The lid plate 63 has locking means (not shown) for locking the fixed frame plate 62 side in the closed position. The extraction passage 64 is formed in a concave shape on the fixed frame plate 62 side according to the shape of the quantitative extraction bag portion 47, the inlet portion 48 and the outlet portion 49 of the extraction port portion 44, and the fixed frame plate facing this extraction passage 64 From 62, a plurality of pins (not shown) projectingly engaged with the plurality of set holes 51 of the extraction port portion 44 are provided.
[0025]
A pressing plate 69 constituting one side wall of the extraction passage 64 is disposed in the recess 66 of the fixed frame plate 62. The pressing plate 69 is formed in a substantially rectangular plate shape that is slightly larger than the size of the quantitative extraction bag portion 47 of the extraction port 44, and is fitted with a recess 66 and has a boss portion 70 projecting at the center of the rear surface. It is fitted inside the cylindrical member 71 fitted and fixed in the through hole 67 of the recess 66, and is arranged so as to be movable in a substantially vertical direction with respect to the other side wall facing the extraction passage 64, that is, the lid plate 63. The pressing plate 69 draws the amount of the raw material liquid corresponding to the retraction amount from the liquid container 41 to the extraction port portion 44 when retreating out of the extraction passage 64 and at the time of advancement into the extraction passage 64. It acts to extract the raw material liquid that has been attracted to.
[0026]
Pinch portions 72 and 73 are arranged in the upper and lower slit hole portions 68 of the fixed frame plate 62, respectively. The pinch portions 72 and 73 are formed in a horizontally long flat plate shape slightly larger than the width of the inlet portion 48 and the outlet portion 49 of the extraction port portion 44, and the front end facing the extraction passage 64 is formed in a substantially curved shape. The hole 68 is fitted in the extraction passage 64 so as to be able to advance and retreat. The pinch parts 72 and 73 close the inlet part 48 or outlet part 49 of the extraction port part 44 by crimping to the other side wall of the extraction passage 64 when moving forward, and close the inlet part 48 or outlet part of the extraction port part 44 when moving backward. Release 49.
[0027]
A frame 74 is connected to the rear surface side of the fixed frame plate 62, and a pressing plate driving mechanism 75 and a pinch driving mechanism 76 are arranged on the frame 74, respectively.
[0028]
The pressing plate driving mechanism 75 has a motor 78 as pressing plate driving means integrated with a gear box 77 attached to the frame 74, and the rotational driving force of the motor 78 is converted to the moving force of the pressing plate 69 by the transmission means 79. Converted and transmitted. The motor 78 is a DC motor that can rotate forward and backward by reversing the polarity, and the rotating shaft 80 is rotated via the gear box 77. A cam 81 is fixed to the rotary shaft 80, and a roller 82 is brought into contact with the rear surface of the cam 81. The roller 82 is fitted to the cylindrical member 71 so as to be slidable in the axial direction (front-rear direction). The slide shaft 83 is rotatably supported at the rear end, and the front end of the slide shaft 83 is connected to the rear surface of the boss portion 70 of the pressing plate 69. In the cylindrical member 71, a coiled spring body 84 is disposed in a compressed state between the rear surface of the boss portion 70 and the rear surface closed portion of the cylindrical member 71 while being fitted around the slide shaft 83. Therefore, the transmission means 79 is constituted by the cam 81, the roller 82, the slide shaft 83, and the spring body 84.
[0029]
Detection means 85 for detecting the rotation amount of the cam 81, that is, the movement position of the pressing plate 69 is provided. In this detection means 85, a detection cam 86 is fixed to the rotary shaft 80, and the detection cam 86 is in a forward position where the pressing plate 69 has advanced into the extraction passage 64 so as to face the circumferential surface of the detection cam 86. A standby position detection switch 87 which is pushed and turned on, and an overrun detection switch 88 which is pushed and turned on by the detection cam 86 at the overrun position where the pressing plate 69 is most retracted are provided. Furthermore, a rotating plate 90 having slits 89 formed at regular intervals is fixed to the rotating shaft 80, and a light emitter and a light receiver are arranged on both sides of the rotating plate 90 to detect the slit 89. A photo interrupter 91 is provided as a quantity detection sensor.
[0030]
The pinch drive mechanism 76 has a swing plate 92 with upper and lower ends engaged with the rear end sides of the upper and lower pinch portions 72, 73, and an intermediate portion of the swing plate 92 is a fixed frame plate 62. Is supported by a support shaft 93 on a bracket (not shown) attached to the rear surface of the rear surface, and the swinging plate 92 swings about the support shaft 93 as a fulcrum, so that either one of the upper and lower pinch portions 72 and 73 is supported. Is advanced to the closing position of the inlet 48 of the extraction port 44 and the other is retracted to the open position of the outlet 49 of the extraction port 44.
[0031]
A spring 94 is stretched between the rear end portion of the upper pinch portion 72 and the rear portion of the frame 74. A lever portion 95 projects rearward from the swing plate 92, and a solenoid 96 as a pinch driving means is attached to the frame 74 at an upper position facing the tip of the lever portion 95, and the lever portion 95 and a plunger 97 of the solenoid 96 are attached. A spring 98 is stretched between the two.
[0032]
When the solenoid 96 is not energized, the plunger 97 protrudes downward. In this state, the tension of the spring 94 is greater than the tension of the spring 98, and the swinging plate 92 is rotated counterclockwise as shown in FIG. When the solenoid 96 is energized, the plunger 97 is attracted upward. In this state, the tension of the spring 98 is greater than the tension of the spring 94, and as shown in FIG. Rocks in the direction.
[0033]
FIG. 8 shows a main configuration diagram of the beverage extractor, 101 is a control means, the control means 101 includes a selection switch 102 for selecting the type of beverage (two types in this embodiment), the strength of the beverage Increase / decrease switch 103 for selecting (dark, light), setting change means 104 having an extraction mode, a data input key, etc., a counting means 105 having a counter function such as a call volume monitoring counter described later, various display means 106, Two liquid extraction devices 4, a hot water supply device 5 and a cold water supply device 14 are connected to each other.
[0034]
A part of the selection switch 102, the increase / decrease switch 103 and the display means 106 are disposed on the front surface of the main body, and a part of the setting change means 104 and the display means 106 are disposed inside the main body.
[0035]
FIG. 9 shows a control block diagram of the beverage extractor. The control means 101 has a CPU 111 of the central processing unit, a ROM 112 in which programs are registered, and a RAM 113 that can write and read various data at any time.
[0036]
On the input side of the control means 101, a selection switch 102, an increase / decrease switch 103, a setting change means 104, a standby position detection switch 87 and an overrun detection switch 88 and a photo interrupter 91 of each liquid extraction device 4, and raw materials in the liquid container 41 A raw material shortage detection sensor 114 for detecting the absence of liquid, a hot water temperature sensor 10, and a water temperature sensor 29 are connected.
[0037]
On the output side of the control means 101, display means 106 for displaying the power source, proper temperature, out of raw material, abnormality, etc., motor 78 of each liquid extraction device 4, solenoid 96 of each liquid extraction device 4, hot water solenoid valve 9, cold water solenoid A valve 26, a hot water supply electromagnetic valve 7, a cold water supply electromagnetic valve 23, a heater 8 of the hot water supply device 5, a cooling unit 16 of the cold water supply device 14, and the like are connected.
[0038]
The control means 101 has a function of a call control means, a function of a call correction control means, and a function of an extraction control means, and details will be described in the following operation.
[0039]
Next, the operation of the present embodiment will be described.
[0040]
First, the back-in box 3 is set in the beverage extractor. The perforation 53 is broken to open the window 52, the extraction port 44 is pulled out as shown by a two-dot chain line in FIG. 6, and the cardboard box 42 is placed on a predetermined mounting portion provided above the liquid extraction device 4. Place. The lid plate 63 of the liquid extraction device 4 is opened to open the front surface of the fixed frame plate 62, the extraction port portion 44 hanging from the cardboard box 42 is engaged with the extraction passage 64 of the fixed frame plate 62, and the extraction port portion 44 The set holes 51 at the four corners of the quantitative extraction bag portion 47 are positioned by engaging with the set pins protruding from the fixed frame plate 62, and the lid plate 63 is closed and locked. The cardboard box 42 may be opened to take out the liquid container 41, and the taken out liquid container 41 may be directly placed on a predetermined placement portion.
[0041]
As a result, the extraction port portion 44 is sandwiched between the fixed frame plate 62 and the lid plate 63 and disposed in the extraction passage 64. In the extraction passage 64, the quantitative extraction bag part 47 faces the pressing plate 69, the inlet part 48 faces the upper pinch part 72, and the outlet part 49 faces the lower pinch part 73. The proximal end portion of the inlet portion 48 is located above the extraction passage 64, and the lower end portion of the outlet portion 49 projects below the extraction passage 64. And the pin which has closed the base end part of the inlet part 48 is removed, the front-end | tip of the outlet part 49 of the extraction port part 44 is cut | disconnected and opened at the position of the broken line b of FIG. 5, and an extraction port is opened. The set is complete. In the beverage extractor of the present embodiment, two back-in boxes 3 containing different types of raw material liquids are set.
[0042]
Next, the extraction operation in the basic first beverage extraction mode of the liquid extraction device 4 under the control of the control means 101 will be described with reference to the flowchart of FIG. 10 and the timing chart of FIG. The beverage extraction mode can be set by the setting change means 104.
[0043]
In the standby state, as shown in FIG. 1, the pressing plate 69 is positioned at an advanced position for entering the extraction passage 64, and the pressing plate 69 presses the quantitative extraction bag portion 47 of the extraction port portion 44 against the lid plate 63. Closed. At the position of the pressing plate 69, the standby position detection switch 87 is turned on, the overrun detection switch 88 is turned off, and the photo interrupter 91 is turned off. Further, the solenoid 96 is turned off, and the oscillating plate 92 is rotated counterclockwise by the bias of the spring 94, so that the upper pinch portion 72 is located at the open position and the lower pinch portion 73 is closed. The outlet 49 of the extraction port 44 is closed by the lower pinch part 73.
[0044]
And in order to operate the beverage extractor to obtain a beverage, the cup 2 is set in the extraction unit 1 on the front surface of the beverage extractor body, and the beverage type is selected and whether the beverage is warm or cold And the selection switch 102 on the front surface of the beverage extractor is operated. Further, when it is desired to make it darker or thinner than the standard darkness of the beverage set in the beverage extractor, the increase / decrease switch 103 is operated.
[0045]
When the selection switch 102 is operated (step 1), it is determined whether the increase / decrease switch 103 is operated (step 2). When the increase / decrease switch 103 is not operated, the standard extraction amount (calling amount) of the raw material liquid is set (step 3). When the increase / decrease switch 103 has been operated, the extraction amount (calling amount) obtained by adding the increment to the standard extraction amount (calling amount) is set in the increase designation, and the standard extraction amount (calling) is specified in the decrease designation. The extraction amount (calling amount) obtained by subtracting the reduced amount from the loading amount is set (step 4).
[0046]
Subsequently, it is determined whether the pressing plate 69 and the pinch portions 72 and 73 are in the standby position, that is, whether the standby position detection switch 87 is on and the solenoid 96 is off (step 5). If it is not at the standby position, initialization processing is executed to rotate the motor 78 and turn off the solenoid 96 (step 6). When the detection cam 86 is rotated by the rotation of the motor 78 and the pressing plate 69 reaches the standby position, the standby position detection switch 87 is turned on by the detection cam 86. When the standby position detection switch 87 is not turned on and when the solenoid 96 is not turned off (step 7), an abnormality process such as displaying an abnormality is performed (step 8).
[0047]
When the pressing plate 69 is in the standby position by the initialization process in the standby position, the ingestion amount monitoring counter of the counting means 105 is set, and the motor 78 is normally rotated to start the operation of invoking the raw material liquid (step 9).
[0048]
Due to the forward rotation of the motor 78, the cam 81 rotates counterclockwise in the state shown in FIG. 1, and the roller 82 is gently pushed backward by the cam 81. Is moved rearward, and the front surface of the pressing plate 69 is moved out of the extraction passage 64, so that the calling space 65 is formed. Therefore, it becomes possible for the quantitative extraction bag portion 47 of the extraction port portion 44 released from being pressed by the pressing plate 69 to protrude in the direction of the inlet space 65, and the raw material liquid in the liquid container 41 is extracted by its own weight. It is drawn into the quantitative extraction bag 47 through the 44 inlets 48. At this time, an amount of the raw material liquid corresponding to the retraction amount of the pressing plate 69 is drawn from the liquid container 41 into the quantitative extraction bag portion 47 of the extraction port portion 44.
[0049]
When the slit 89 of the rotating plate 90 that rotates integrally with the cam 81 reaches the position of the photo interrupter 91, every time the slit 89 is detected by the photo interrupter 91, it is counted by the call amount monitoring counter of the counting means 105. The forward rotation amount of the motor 78 corresponding to the above, that is, the retracted position of the pressing plate 69 is monitored.
[0050]
Based on the count value counted by the call amount monitoring counter of the counting means 105, the forward rotation amount of the motor 78 corresponding to the initially set extraction amount (call amount), that is, the predetermined reverse position of the pressing plate 69 (Step 10).
[0051]
The raw material in the liquid container 41 is detected by the material shortage detection sensor 114 until the amount of forward rotation of the motor 78 corresponding to the initially set extraction amount (calling amount), that is, until the predetermined retreat position of the pressing plate 69 is reached. The presence or absence of liquid is monitored (step 11), and it is monitored whether the overrun detection switch 88 is turned on (step 12). Here, when the absence of the raw material liquid is detected, the raw material no-treatment such as stopping the motor 78 and displaying the out of raw material is performed (step 13). Further, for some reason, the forward rotation amount of the motor 78 corresponding to the initially set extraction amount (calling amount), that is, the predetermined reverse position of the pressing plate 69 is passed, and the rotation of the motor 78 continues as it is. When the overrun detection switch 88 is turned on by the detection cam 86, an overrun correction process described later is performed by the function of the call correction control means of the control means 101 (step 14).
[0052]
Then, as shown in FIG. 2, when the forward rotation amount of the motor 78 corresponding to the initially set extraction amount (calling amount), that is, a predetermined backward position of the pressing plate 69 is reached, the motor 78 is stopped ( Step 15). In the state shown in FIG. 2, the pressing plate 69 is retracted to a predetermined retracted position corresponding to the initially set extraction amount, and an amount of raw material liquid corresponding to the retracting amount of the pressing plate 69 is extracted from the liquid container 41. It is called into the quantitative extraction bag portion 47 of the mouth portion 44. That is, if the increase / decrease switch 103 is designated to increase, the pressing plate 69 is positioned rearward of the standard retracted position, and if the decrease is specified, the pressing plate 69 is moved further forward than the standard retracted position. Located in.
[0053]
Subsequently, as shown in FIG. 3, the solenoid 96 is energized (step 16), and the swinging plate 92 is rotated in the clockwise direction in the drawing to move the upper pinch portion 72 to the closed position and lower side. The pinch part 73 is moved to the open position. Accordingly, the upper pinch part 72 closes the inlet part 48 of the extraction port part 44 and prevents the raw material liquid from flowing into the extraction port part 44 from the liquid container 41. By moving the lower pinch part 73 to the open position, the outlet part 49 of the extraction port part 44 is opened, and the raw material liquid drawn into the quantitative extraction bag part 47 passes through the extraction port at the lower end of the outlet part 49. Extracted into the cup 2 arranged in the extraction unit 1.
[0054]
Subsequently, the call amount monitoring counter of the counting means 105 is reset (step 17).
[0055]
Subsequently, the motor 78 is reversely rotated (step 18). As a result, in the state shown in FIG. 3, the cam 81 rotates in the clockwise direction, and the roller 82 biased by the spring body 84 with respect to the cam 81 is gently driven forward so as to be integrated with the roller 82. Then, the pressing plate 69 moves forward, the front surface of the pressing plate 69 moves in the direction of the extraction passage 64, and the calling space 65 is narrowed. Therefore, the quantitative extraction bag portion 47 of the extraction port portion 44 is forcibly pressed between the pressing plate 69 and the cover plate 63, and the raw material liquid in the quantitative extraction bag portion 47 of the extraction port portion 44 is forcibly extracted. . Therefore, the raw material liquid in the quantitative extraction bag part 47 of the extraction port 44 can be extracted in a short time and the raw material liquid can be prevented from remaining.
[0056]
Then, as shown in FIG. 4, the extraction of the raw material liquid in the quantitative extraction bag portion 47 of the extraction port portion 44 is completed, the pressing plate 69 reaches the initial standby position, and the standby position detection switch 87 is detected by the detection cam 86. When is turned on (step 19), the motor 78 is stopped (step 20).
[0057]
After the motor 78 is stopped, the solenoid 96 is de-energized (step 22) after a predetermined time has elapsed (step 21) in consideration of the time when the sagging of the raw material liquid from the outlet 49 of the extraction port 44 disappears, and is shown in FIG. In this manner, the swing plate 92 is rotated counterclockwise in the figure to move the upper pinch portion 72 to the open position and move the lower pinch portion 73 to the closed position. As a result, the initial standby state is restored and a series of raw material liquid extraction operations are completed, and the next raw material liquid extraction operation is waited for (step 23).
[0058]
On the other hand, in response to the extraction operation of the raw material liquid, the hot water supply device 5 or the cold water supply device 14 operates to extract hot water or cold water into the cup 2 of the extraction unit 1, and the raw material liquid and hot water are extracted in the cup 2. Or a cold beverage is mixed to make a diluted beverage.
[0059]
As described above, the driving force of the motor 78 is transmitted to the pressing plate 69 via the transmission means 79, so that the pressing plate 69 is moved. Therefore, the reverse position of the pressing plate 69 is controlled by controlling the rotation amount of the motor 78. It can be arbitrarily adjusted, that is, the amount of the raw material liquid drawn into the extraction port 44 of the liquid container 41 can be arbitrarily adjusted, and the amount of the raw material liquid extracted can be easily variably set. Therefore, depending on the preference of the strength of the beverage liquid, it is possible to respond to thickening or thinning of the beverage, and in response to the increase or decrease of the volume of the beverage liquid according to the size of the cup 2, It can cope with such things as increasing and decreasing.
[0060]
Further, the pressing plate 69 is urged toward the extraction passage 64 by the spring body 84, the roller 82 rotatably supported by the pressing plate 69 is engaged with the cam 81 rotated by the motor 78, and the motor 78 Since the pressing plate 69 is moved by the driving force, the pressing plate 69 can be moved smoothly, and the liquid can be extracted while gently pressing the extraction port portion 44 of the liquid container 41. Therefore, there is no possibility that the outlet portion 49 of the extraction port portion 44 is shaken and the raw material liquid is scattered.
[0061]
Further, since the photo interrupter 91 detects the amount of rotation of the rotating plate 90 provided on the rotating shaft 80 rotated by the motor 78, the movement position of the pressing plate 69 can be arbitrarily set according to the amount of rotation even if a DC motor is used. Can be adjusted.
[0062]
Next, the overrun correction process in step 14 by the function of the call correction control means of the control means 101 will be described with reference to the flowchart of FIG.
[0063]
For some reason, the forward rotation amount of the motor 78 corresponding to the initially set extraction amount (calling amount), that is, the predetermined reverse position of the pressing plate 69 has passed, and the rotation of the motor 78 continues as it is, When the overrun detection switch 88 is turned on by the detection cam 86 (step 12), the motor 78 is stopped (step 31). In this state, the pressing plate 69 has reached the last retracted position, and the raw material liquid having the maximum amount YMAX is drawn into the quantitative extraction bag portion 47 of the extraction port portion 44.
[0064]
Further, it is determined whether the solenoid 96 is de-energized (step 32). If the solenoid 96 is in an excited state, the solenoid 96 is de-energized (step 33).
[0065]
The call amount monitoring counter of the counting means 105 is reset (step 34), and a predetermined extraction amount (call amount) initially set is subtracted from the maximum call amount YMAX, and the return corresponding to the surplus call amount The correction value Z is obtained, and the return correction value Z is set in the call amount monitoring counter of the counting means 105 (step 35).
[0066]
Subsequently, the motor 78 is reversely rotated (step 36). As a result, the pressing plate 69 moves forward, and the pressing plate 69 forcibly presses the quantitative extraction bag portion 47 of the extraction port 44 between the lid plate 63 and the quantitative extraction bag portion of the extraction port 44. The raw material liquid in 47 is forcibly returned into the liquid container 41 through the inlet 48.
[0067]
A slit 89 of the rotating plate 90 that rotates in accordance with the reverse rotation of the motor 78 is detected by a photo interrupter 91, and each time the slit 89 is detected by the photo interrupter 91, a return correction value Z of the call amount monitoring counter of the counting means 105 is detected. Subtract.
[0068]
When the incoming call monitoring counter of the counting means 105 reaches the return correction value Z = 0 (step 37), the motor 78 is stopped (step 38). As a result, the pressing plate 69 moves forward to a predetermined retracted position corresponding to the initially set extraction amount (calling amount) and stops. Accordingly, the initially set extraction amount (ingestion amount) of the raw material liquid is drawn into the quantitative extraction bag portion 47 of the extraction port portion 44.
[0069]
After the overrun correction process, the process proceeds to step 16 and the extraction operation as described above is performed.
[0070]
As described above, when the pressing plate 69 is retracted to the predetermined retracted position corresponding to the predetermined amount of pulling, when the press plate 69 is retracted to the position past the predetermined retracting position, the pressing plate 69 is By advancing to a predetermined retreat position corresponding to a predetermined amount of intake, the raw material liquid that has been abundantly drawn into the extraction port portion 44 is returned to the liquid container 41, and the extraction port portion 44 has a predetermined amount. Since the amount of raw material liquid that has been attracted is drawn and extraction is performed from this state, the amount of raw material liquid that is attracted from the liquid container 41 to the extraction port 44 can be reliably set to a predetermined amount. Thus, it is possible to extract a fixed amount of raw material liquid within a predetermined extraction time within a normal range without prolonging the time.
[0071]
Next, the extraction operation in the second beverage extraction mode of the liquid extraction device 4 under the control of the control means 101 will be described with reference to the flowchart of FIG. 13 and the timing chart of FIG.
[0072]
When the selection switch 102 is operated (step 41), it is determined whether the pressing plate 69 and the pinch portions 72 and 73 are in the standby position, that is, whether the standby position detection switch 87 is on and the solenoid 96 is off (step 42). ). If it is not at the standby position, initialization processing is executed to rotate the motor 78 and turn off the solenoid 96 (step 43). When the detection cam 86 is rotated by the rotation of the motor 78 and the pressing plate 69 reaches the standby position, the standby position detection switch 87 is turned on by the detection cam 86. When the standby position detection switch 87 is not turned on and when the solenoid 96 is not turned off (step 44), abnormality processing such as displaying an abnormality is performed (step 45).
[0073]
It is determined whether or not the increase / decrease switch 103 has been operated (step 46). If the increase / decrease switch 103 has not been operated, the excess call amount β is added to the standard extraction amount (call amount) X to obtain a total call at standard time. A loading amount Y is set (step 47). In other words, Y = X + βX when expressed by an equation. β is a coefficient of surplus call volume.
[0074]
When the increase / decrease switch 103 is operated, in the increase designation, the excess amount of call β is added to the amount of extraction (call amount) X1 obtained by adding the increase amount to the standard amount of extraction (call amount) X The total amount of calls Y at the time of increase is set, and in the case of reduction, the excess amount of calls β is added to the extraction amount (calling amount) X1 obtained by subtracting the amount of reduction from the standard extraction amount (calling amount) X Is added to set the total amount Y of calls when decreasing (step 48). In other words, Y = X1 + βX1 when expressed by an equation. The extraction amount (calling amount) X1 is X1 = (1 + α) X, and α = 0 in the standard, α> 0 in the increase amount, and α <0 in the decrease amount.
[0075]
The attracting amount monitoring counter of the counting means 105 is set, and the motor 78 is rotated in the forward direction to start the raw material liquid attracting operation (step 49).
[0076]
By the forward rotation of the motor 78, the pressing plate 69 moves backward, and the raw material liquid in the liquid container 41 is drawn into the quantitative extraction bag portion 47 through the inlet portion 48 of the extraction port portion 44. Further, when the photo interrupter 91 detects the slit 89 of the rotating plate 90 that rotates by the forward rotation of the motor 78, every time the photo interrupter 91 detects the slit 89, it counts by the call amount monitoring counter of the counting means 105. The forward rotation amount of the motor 78 corresponding to the count value, that is, the reverse position of the pressing plate 69 is monitored.
[0077]
Based on the count value counted by the call volume monitoring counter of the counting means 105, whether the motor 78 has reached the normal rotation amount corresponding to the set total call volume Y, that is, the predetermined reverse position of the pressing plate 69 Judgment is made (step 50).
[0078]
Until the amount of forward rotation of the motor 78 corresponding to the total amount Y of arrival, that is, until reaching the predetermined retracted position of the pressing plate 69, the material shortage detection sensor 114 monitors the presence or absence of the raw material liquid in the liquid container 41. (Step 51), it is monitored whether the overrun detection switch 88 is turned on (Step 52). Here, when the absence of the raw material liquid is detected, the raw material absence process such as stopping the motor 78 and displaying the out of raw material is performed (step 53). Further, for some reason, the forward rotation amount of the motor 78 corresponding to the initially set extraction amount (calling amount), that is, the predetermined reverse position of the pressing plate 69 is passed, and the rotation of the motor 78 continues as it is. When the overrun detection switch 88 is turned on by the detection cam 86, the overrun correction process as described above is performed by the function of the call correction control means of the control means 101 (step 54).
[0079]
When the forward rotation amount of the motor 78 corresponding to the total amount of incoming Y, that is, the predetermined retracted position of the pressing plate 69 is reached, the motor 78 is stopped (step 55). In this state, the retracted position of the pressing plate 69 corresponding to the standard extraction amount (calling amount) X or the increased or decreased extraction amount (calling amount) X1 is retracted to the retracted position to which the excess calling amount β is added, A total amount Y of raw material liquid corresponding to the retraction amount of the pressing plate 69 is drawn from the liquid container 41 into the quantitative extraction bag portion 47 of the extraction port portion 44.
[0080]
Subsequently, the return extraction value Z corresponding to the excess call volume β is obtained by subtracting the standard extraction volume (call volume) X or the increased or decreased extracted volume (call volume) X1 from the total call volume Y, The return correction value Z is set in the call amount monitoring counter of the counting means 105, and the motor 78 is reversely rotated (step 56).
[0081]
As a result, the pressing plate 69 moves forward, and the pressing plate 69 forcibly presses the quantitative extraction bag portion 47 of the extraction port 44 between the lid plate 63 and the quantitative extraction bag portion of the extraction port 44. The raw material liquid in 47 is forcibly returned into the liquid container 41 through the inlet 48.
[0082]
A slit 89 of the rotating plate 90 that rotates in accordance with the reverse rotation of the motor 78 is detected by a photo interrupter 91, and each time the slit 89 is detected by the photo interrupter 91, a return correction value Z of the call amount monitoring counter of the counting means 105 is detected. Subtract.
[0083]
When the incoming call amount monitoring counter of the counting means 105 reaches the return correction value Z = 0 (step 57), the motor 78 is stopped (step 58). As a result, the standard extraction amount (calling amount) X or the increased or decreased extraction amount (calling amount) X1 moves forward to a predetermined retracted position of the pressing plate 69 and stops. Therefore, the standard extraction amount (ingestion amount) X or the increased or decreased extraction amount (ingestion amount) X1 of raw material liquid is drawn into the quantitative extraction bag portion 47 of the extraction port portion 44.
[0084]
Subsequently, the solenoid 96 is excited, and an extraction operation is performed in steps 58-65. The extraction operation in steps 58 to 65 is the same as the extraction operation in steps 16 to 23 in the first beverage extraction mode, and the description thereof is omitted.
[0085]
As described above, after the pressing plate 69 has been retracted from the predetermined retreating position corresponding to the predetermined attracting amount to the retracted position to which the surplus attracting amount is added, the pressing plate 69 is advanced by the surplus attracting amount. As a result, after the raw material liquid has been drawn in from the liquid container 41 into the extraction port portion 44 more than the predetermined amount, the portion that has been drawn in is returned to the liquid container 41 and the predetermined amount in the extraction port portion 44. In order to perform extraction from this state, the amount of liquid is drawn in, for example, even when the setting of the extraction amount is small and the pressing plate 69 does not retract too much or when the remaining amount of the raw material liquid in the liquid container 41 decreases, A specified amount of raw material liquid can be reliably drawn from the liquid container 41 into the extraction port 44, preventing variations in the extracted amount, and without delaying the time, a fixed amount of raw material within a predetermined range of extraction time. The liquid can be extracted.
[0086]
Next, the extraction operation in the third beverage extraction mode of the liquid extraction device 4 under the control of the control means 101 will be described with reference to the flowchart of FIG.
[0087]
When the selection switch 102 is operated (step 71), it is determined whether the pressing plate 69 and the pinch portions 72 and 73 are in the standby position, that is, whether the standby position detection switch 87 is on and the solenoid 96 is off (step 72). ). If it is not at the standby position, initialization processing is executed to rotate the motor 78 and turn off the solenoid 96 (step 73). When the detection cam 86 is rotated by the rotation of the motor 78 and the pressing plate 69 reaches the standby position, the standby position detection switch 87 is turned on by the detection cam 86. When the standby position detection switch 87 is not turned on and when the solenoid 96 is not turned off (step 74), abnormality processing such as displaying an abnormality is performed (step 75).
[0088]
Subsequently, the motor 78 is rotated in the forward direction to start the raw material liquid drawing operation (step 76). When the pressing plate 69 reaches the last retracted position and the overrun detection switch 88 is turned on (step 77), the motor 78 is stopped (step 78). In a state where the pressing plate 69 is stopped at the last retracted position, the raw material liquid having the maximum amount YMAX is drawn into the quantitative extraction bag portion 47 of the extraction port portion 44.
[0089]
It is determined whether the increase / decrease switch 103 has been operated (step 79). If the increase / decrease switch 103 has not been operated, the standard correction amount (call amount) X is subtracted from the maximum call amount YMAX, and the return correction value Z Is obtained (step 80). That is, Z = YMAX−X when expressed by an equation.
[0090]
When the increase / decrease switch 103 is operated, in the increase designation, the extraction amount (call amount) X1 obtained by adding the increase amount to the standard extraction amount (call amount) X is obtained and extracted from the maximum call amount YMAX. Subtract the amount (calling amount) X1 to obtain the reversal correction value Z at the time of increasing, and in the case of weight reduction, the extraction amount (calling) by subtracting the amount of decrease from the standard extraction amount (calling amount) X (Amount) X1 is obtained, and the extraction amount (calling amount) X1 is subtracted from the maximum calling amount YMAX to obtain a reversal correction value Z at the time of reduction (step 81). In other words, Z = YMAX−X1 when expressed by an equation. The extraction amount (calling amount) X1 is X1 = (1 + α) X, and α = 0 in the standard, α> 0 in the increase amount, and α <0 in the decrease amount.
[0091]
The calculated return correction value Z is set in the call amount monitoring counter of the counting means 105, and the motor 78 is rotated in reverse (step 82). As a result, the pressing plate 69 moves forward, and the pressing plate 69 forcibly presses the quantitative extraction bag portion 47 of the extraction port 44 between the lid plate 63 and the quantitative extraction bag portion of the extraction port 44. The raw material liquid in 47 is forcibly returned into the liquid container 41 through the inlet 48.
[0092]
A slit 89 of the rotating plate 90 that rotates in accordance with the reverse rotation of the motor 78 is detected by a photo interrupter 91, and each time the slit 89 is detected by the photo interrupter 91, a return correction value Z of the call amount monitoring counter of the counting means 105 is detected. Subtract.
[0093]
When the incoming call monitoring counter of the counting means 105 reaches the return correction value Z = 0 (step 83), the motor 78 is stopped (step 84). As a result, the standard extraction amount (calling amount) X or the increased or decreased extraction amount (calling amount) X1 moves forward to a predetermined retracted position of the pressing plate 69 and stops. Therefore, the standard extraction amount (ingestion amount) X or the increased or decreased extraction amount (ingestion amount) X1 of raw material liquid is drawn into the quantitative extraction bag portion 47 of the extraction port portion 44.
[0094]
Subsequently, the solenoid 96 is excited, and the extraction operation is performed in steps 85 to 91. The extraction operations in steps 85 to 91 are the same as the extraction operations in steps 16 to 23 in the first beverage extraction mode and steps 58 to 65 in the second beverage extraction mode, and the description thereof is omitted.
[0095]
As described above, after the pressing plate 69 has been retracted from the predetermined retracted position corresponding to the predetermined incoming amount to the last retracted position behind, the press plate 69 is moved to the predetermined retracted position corresponding to the predetermined incoming amount. The raw material liquid is drawn from the liquid container 41 into the extraction port 44 more than a predetermined amount, and then the amount that has been drawn back is returned to the liquid container 41 and the extraction port 44 has a predetermined amount. In order to perform extraction from this state, for example, when the extraction amount is set to a small value and the pressing plate 69 does not move back too much, or the remaining amount of the raw material liquid in the liquid container 41 decreases. Even in this case, it is possible to reliably draw a predetermined amount of raw material liquid from the liquid container 41 into the extraction port 44, prevent variations in the amount of extraction, and extend the time within a predetermined extraction time within the normal range. To extract a certain amount of raw material liquid Kill.
[0096]
In the detection means 85 for detecting the rotation amount of the cam 81, that is, the movement position of the pressing plate 69 in the above embodiment, the slit 89 of the rotation plate 90 is detected by the photo interrupter 91 and the amount of the counting means 105 is called. Although it was counted by the monitoring counter, it can also be measured in time using a timer, and the rotation amount of the cam 81, that is, the movement position of the pressing plate 69 is detected based on the time during which the motor 78 is rotated. be able to. Further, by using a stepping motor as the motor 78, the rotation amount of the cam 81, that is, the moving position of the pressing plate 69 can be detected from the number of pulses applied to the stepping motor.
[0097]
It is a front view of the liquid container of the back-in box applied to the liquid extraction apparatus of embodiment same as the above.
[0098]
【The invention's effect】
According to the liquid extraction device of claim 1, after the pressing plate is retracted from the predetermined retracted position corresponding to the predetermined liquid attracting amount to the retracted position to which the surplus attracting amount is added, the surplus attracting amount is obtained. By advancing the pressing plate only, the amount of liquid drawn from the liquid container into the extraction port is larger than the predetermined amount, and then the amount of the larger amount is returned to the liquid container and the predetermined amount is drawn into the extraction port. In order to perform extraction from this state, for example, even if the setting of the extraction amount is small and the pressing plate does not retract too much or the remaining amount of the raw material liquid in the liquid container is reduced, the liquid container A predetermined amount of liquid can be reliably drawn into the extraction port, and variations in the extraction amount can be prevented, and a fixed amount of liquid can be extracted within a predetermined extraction time within a normal range without extending the time..
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a liquid extraction apparatus according to an embodiment of the present invention, as viewed from the side of a liquid extraction apparatus during standby.
FIG. 2 is a cross-sectional view of the liquid extraction device when the liquid is drawn in from the same side as seen from the side.
FIG. 3 is a cross-sectional view of the liquid extraction apparatus during liquid extraction according to the embodiment as viewed from the side.
4 is a cross-sectional view of the liquid extraction apparatus during liquid extraction following the embodiment of FIG. 3 as viewed from the side. FIG.
FIG. 5 is a front view of a liquid container of a back-in box applied to the liquid extraction device according to the embodiment.
FIG. 6 is a perspective view of a back-in box applied to the liquid extraction device according to the embodiment.
FIG. 7 is a configuration diagram of a beverage extractor to which the liquid extraction device of the embodiment is applied.
FIG. 8 is a main configuration diagram of a beverage extractor to which the liquid extraction device of the embodiment is applied.
FIG. 9 is a control block diagram of a beverage extractor to which the liquid extraction device of the embodiment is applied.
FIG. 10 is a flowchart for explaining an extraction operation in a first beverage extraction mode according to the embodiment.
FIG. 11 is a timing chart for explaining the extraction operation in the first beverage extraction mode according to the embodiment.
FIG. 12 is a flowchart for explaining overrun correction processing according to the embodiment;
FIG. 13 is a flowchart for explaining an extraction operation in the second beverage extraction mode of the embodiment.
FIG. 14 is a timing chart for explaining the extraction operation in the second beverage extraction mode according to the embodiment;
FIG. 15 is a flowchart for explaining an extraction operation in the third beverage extraction mode of the embodiment;
[Explanation of symbols]
41 Liquid container
44 Extraction port
48 Entrance
49 Exit
61 Extraction passage body
64 Extraction passage
69 Press plate
72, 73 Pinch part
78 Motor as pressing plate driving means
85 Detection means
96 Solenoid as a pinch driving means
101 Call control means, ExtractionControl means having function of output control means

Claims (1)

An extraction passage body provided with an extraction passage in which a flexible extraction port portion of a liquid container for storing liquid is disposed downward;
It constitutes one side wall of this extraction passage and is provided so that it can move in a substantially vertical direction with respect to the other side wall facing the extraction passage. When retreating outside the extraction passage, an amount of liquid corresponding to the retraction amount is extracted from the liquid container. A pressure plate that draws the liquid that has been drawn into the extraction port while being drawn into the mouth and when being advanced into the extraction passage;
A pressing plate driving means for moving the pressing plate forward and backward with respect to the extraction passage;
A pair of pinch portions that are capable of moving forward and backward from the upper and lower portions of the pressing plate into the extraction passage and that are closed by pressing the inlet portion and the outlet portion of the extraction opening portion of the liquid container to the other side wall of the extraction passage, respectively. ,
A pinch drive means for selectively advancing one of the pair of pinch portions to the closing position of the extraction port and retreating the other to the open position of the extraction port;
Detecting means for detecting a moving position of the pressing plate;
When the liquid is called, the pressing plate driving means moves the upper pinch portion to the open position and moves the lower pinch portion to the closed position, and the pressing plate driving means moves the pressing plate to a predetermined liquid state. An invocation control means for advancing the pressing plate by an amount corresponding to the surplus amount of ingestion after retreating from a predetermined retreat position corresponding to the amount of entrainment to the retracted position to which the amount of surplus ingestion is added;
Extraction control that moves the upper pinch part to the closed position by the pinch driving means and moves the lower pinch part to the open position by the pinch driving means and advances the pressing plate by the pressing plate driving means at the time of extraction after the liquid is drawn And a liquid extraction device.

Images