JP4814057B2 - Liquid container - Google Patents

Description

  The present invention relates to a liquid container, and in particular, is for heating a liquid in a tank such as a beverage extraction device or an electric pot to discharge a predetermined amount of liquid.

  A beverage extraction apparatus such as a coffee maker, which is one of the liquid containers of the present invention, heats water stored in a tank by a heating means, and supplies hot water to a filter cup containing coffee powder as a beverage extraction raw material by a supply means. By doing so, the coffee liquid is extracted from the coffee powder, and the coffee liquid flows out into the beverage container.

  Prior art document information related to this beverage extraction device includes the following.

JP 2003-153808 A JP 2004-215663 A

  The beverage supply device of Patent Document 1 includes a water supply tank and a water heater tank, and replenishes a predetermined amount of water into the water supply tank, thereby filtering hot water at a predetermined temperature heated in the water heater tank by a replenishment amount. Supply to cup and extract beverage. However, this beverage extraction device has a problem that once a beverage is extracted, the next beverage cannot be extracted until the replenished liquid is heated.

  On the other hand, the beverage extraction device of Patent Document 2 includes a tank having a capacity exceeding the maximum amount of beverage that can be extracted at one time. The water in the tank is heated and kept warm, and the extraction amount is designated. By executing the operation, hot water is supplied to the filter cup by a pump, and a specified amount of beverage is extracted. Therefore, it is possible to extract the beverage continuously depending on the amount of residual water in the tank.

  However, in the beverage extraction device of Patent Document 2, since the extraction amount is adjusted by the operation time of the pump, an error occurs in the actual supply amount. As a result, there is a possibility that variations will occur not only in the amount of beverage dispensed but also in the intensity of its taste.

  The present invention has been made in view of conventional problems, and it is a first object of the present invention to provide a liquid container that can accurately supply a specified amount of liquid. The second object is to mount this liquid container on a beverage extraction device so that a beverage with a stable taste can be extracted at all times.

  In order to solve the above problems, a liquid container according to the present invention includes a tank for storing a liquid, a supply means for supplying the liquid in the tank, and a supply instruction means for operating the supply means to supply a predetermined amount of liquid. A remaining amount detecting means for detecting a remaining amount of liquid in the tank, a control means for controlling the supplying means while judging a supply amount of the liquid based on a detection value of the remaining amount detecting means, and the supplying means Correction means for correcting a preset supply amount judgment value set by the control means based on the detection value of the remaining amount detection means before supply by the control means.

  The liquid container supplies the liquid in the tank while determining the supply amount from the detection value of the remaining amount detection means. In addition, the preset supply amount judgment value has a detection error over time. However, since the supply amount judgment value is corrected by the correcting means, stable and accurate supply can be performed.

  In this liquid container, the remaining amount detecting means is preferably a pressure sensor disposed at the bottom of the tank. In this way, the internal configuration can be simplified and the overall size can be prevented.

Specifically, an initial point position and a full point position are set in advance as the remaining amount of liquid in the tank, and initial point detection means and full point detection means based on the actual remaining liquid amount are provided, and these detection means It is preferable that the correction unit corrects the supply amount determination value of the control unit based on the detection value of the remaining amount detection unit at the time of detection. Here, a switch that detects an operation by an operator, a photocoupler that detects a change due to the presence or absence of water, and the like can be applied to the detection unit.
In this case, the correction unit is configured to detect the remaining amount based on the initial point set value and the full point set value of the remaining amount detecting unit set in advance and the detection of the initial point detecting unit and the full point detecting unit. It is preferable that a correction coefficient is calculated using the initial point detection value and the full point detection value detected in step 1, and the supply amount determination value is corrected using the correction coefficient.
In this way, an accurate supply amount can always be obtained.

Moreover, it is preferable that the said correction | amendment means correct | amends the supply amount judgment value of the said control means with the correction pressure value based on the water supply pressure by the said supply means.
In this case, it is preferable that the tank is divided into a predetermined number along the height direction, and the correction pressure value is set for each of the divisions.
In this way, it is possible to prevent a detection error associated with the supply pressure by the supply means and obtain an accurate supply amount.

  Further, after the liquid supply operation based on the detection values of the correction unit and the remaining amount detecting unit is completed, the control unit executes a standby process for stabilizing the liquid level in the tank, and then the remaining amount detecting unit When it is determined that the supply amount is insufficient based on the detected value, it is preferable to execute an adjustment step of re-operating the supply unit. In this way, a more stable supply amount can be obtained.

Furthermore, the supply means is a screw pump capable of a forward rotation operation for supplying the liquid in the tank to the outside and a reverse rotation operation for causing the liquid to flow back into the tank, and the control means is the supply means. It is preferable that a reverse operation is performed before the supply by means of such that the liquid in the discharge pipe connected to the supply means flows back into the tank. In this way, the liquid temperature in the discharge pipe can be brought close to the liquid temperature in the tank.
In this case, it is preferable that after the reversing operation by the supplying unit, a standby process for stabilizing the liquid level in the tank is performed, and then the normal supplying operation by the supplying unit is performed. In this way, it is possible to prevent a detection error of the remaining amount detecting means due to liquid shaking.

  Further, it is preferable to further provide a cleaning control for intermittently executing the reverse rotation operation by the supply means. In this way, the tank can be easily cleaned.

Furthermore, it is preferable to further include supply amount instruction means for inputting the supply amount by the supply means.
In this case, the notification means that is operated when the remaining amount of liquid in the tank based on the detection value of the remaining amount detection means is less than the sum of the supply instruction amount by the supply amount instruction means and a preset lower limit value. Is preferably further provided.
Further, when the remaining amount of liquid in the tank based on the detection value of the remaining amount detecting means is less than an amount obtained by adding a supply instruction amount by the supply amount instruction means and a preset lower limit value, the supplying means It is preferable not to operate.
When the supply operation by the supply unit exceeds a preset allowable time, the supply operation is preferably stopped.
In this way, user convenience can be improved. In addition, since the idling of the supplying means can be reliably prevented, the period (life) in which the supplying means can be used can be extended.

Furthermore, it is preferable to further comprise a heating means for heating the liquid in the tank.
In this case, it is preferable that the heating operation by the heating unit is stopped when the liquid remaining amount in the tank based on the detection value of the remaining amount detection unit falls below a preset lower limit value.
In this way, the safety of the product can be improved.

Moreover, it is preferable to further include a filter cup for extracting a beverage from a beverage extraction raw material housed therein by injection of a high-temperature liquid from the supply means.
In this case, it is preferable to have an uneven process of maintaining a state in which the liquid supply is stopped after supplying a predetermined amount of high-temperature liquid set in advance by the supply means.
Moreover, it is preferable to further include an unevenness time instruction means for inputting the supply stop time of the unevenness process.
In this way, a stable and delicious beverage can be extracted.

  Furthermore, the apparatus further comprises temperature detection means for detecting the liquid temperature in the tank, and the control means does not execute the liquid supply operation by the supply means when the temperature detected by the temperature detection means is lower than a preset temperature. Is preferred. If it does in this way, it can prevent that the drink with a bad taste is extracted by misuse of a user.

  Furthermore, it is preferable to further provide a discharge instruction means for discharging the liquid in the tank by the supply means. In this way, convenience for the user can be improved when the liquid in the tank is replaced.

In addition, it is preferable that the information processing apparatus further includes a notification unit that is operated when a remaining liquid amount in the tank based on a detection value of the remaining amount detection unit exceeds a preset upper limit value.
Furthermore, it is preferable that at least the supply operation by the supply means is not executed when the remaining liquid amount in the tank exceeds the upper limit value.
In this way, misuse due to excessive storage can be prevented, so that the safety and stability of the product can be improved.

  Furthermore, it is preferable that when the liquid is supplied into the tank during the supply operation by the supply means, the supply operation is stopped. In this way, excessive supply of liquid due to misuse can be prevented.

  In the liquid container of the present invention, the liquid supply in the tank is supplied while determining the supply amount from the detection value of the remaining amount detection means, and a preset supply amount determination value that causes a detection error over time is corrected by the correction means. Since correction is performed, an accurate specified amount of liquid can be stably supplied. Therefore, if this liquid container is mounted on a beverage extraction device, a beverage having a stable taste can always be extracted.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a beverage extraction apparatus which is a liquid container according to an embodiment of the present invention. This beverage extraction device is generally provided with a beverage dispensing member and a heat retaining mechanism on the front surface of a main body 10 having a tank 30, heating means and supply means.

  The main body 10 includes an exterior body having a cylindrical metal body 11, a shoulder body 12 disposed at the upper end of the body 11, and a bottom body 15 disposed at the lower end of the body 11. . In the main body 10, a nose portion 13 is provided on a shoulder body 12 positioned at an upper portion so as to protrude forward from the front surface, and a lower end of the nose portion 13 is covered with a rail member 14. Further, a base portion 25 is provided on the bottom body 15 located at the lower portion so as to protrude forward from the front surface. The shoulder body 12 has an opening at the back of the nose portion 13 and is closed by a lid 16 on which the opening is rotatably attached.

  Among them, the nose portion 13 is provided with a discharge pipe 41 to be described later, and an operation board 57 and a control board 84 are disposed therein. And the rail member 14 which shields this nose part 13 is located in the back part of the exposed part 17 which has the flat lower end surface extended in a horizontal (horizontal) direction, and this exposed part 17, as shown in FIG. 1 and FIG. The interior part 22 to be provided.

  The exposed portion 17 that forms the lower surface of the nose portion 13 is provided with a spout 18 that communicates with the discharge pipe 41. Moreover, the 1st slide rail part 19 and the 2nd slide rail part 20 which are extended toward the front-back direction which is a horizontal direction are provided in the both sides of this rail member 14. As shown in FIG. Each of these slide rail portions 19 and 20 has a frame shape having an L-shaped cross section. Further, on the back side of the exposed portion 17, an engagement convex portion 21 that protrudes downward so as to form a substantially semicircular cross section is provided.

  The interior portion 22 is provided between the body 11 and the shoulder body 12 and is fixed to the body 11 by screws, and a bulging portion 23 having an outer wall surface along the inner surface of the body 11 is provided. It has been. A part of the bulging portion 23 is provided with an insertion hole 24 through which the discharge pipe 41 is inserted.

  As shown in FIG. 1, the pedestal portion 25 is configured to detachably mount a glass jug 26, and a metal heat-sensitive member 27 having good thermal conductivity is disposed on the upper surface. Further, as shown in FIG. 3, a heat retaining heater 28 serving as a heat retaining means is disposed inside the pedestal portion 25, and a heat retaining temperature for detecting the beverage temperature in the jug 26 via the heat sensitive member 27. A heat retention temperature sensor 29, which is a temperature detection means, is provided.

  As shown in FIG. 1, a tank 30 having an upper end opening for storing water as a liquid is disposed in the upper end opening of the shoulder body 12 closed by the lid body 16 inside the exterior body. At the bottom of the tank 30, as shown in FIG. 3, a heater 31, which is a container heating means for boiling and keeping the water stored in the tank 30, is disposed. A container temperature sensor 32 serving as a container temperature detecting means for detection is provided.

  A screw pump 33 is disposed between the exterior body and the tank 30 as supply means for supplying water in the tank 30 to the nose portion 13. The screw pump 33 rotates a screw 35 disposed inside a casing 34 by a motor 36 that is a driving means. In the present embodiment, the motor 36 of the screw pump 33 rotates in the forward direction to supply the liquid in the tank 30 to the outside of the nose portion 13 by the screw, and the liquid in the discharge pipe 41 into the tank 30. A device capable of reverse operation for backflow is used.

  The suction port of the casing 34 is connected to a water suction pipe 37 connected to the water supply port 30a at the bottom of the tank 30 on the upstream side. The inside of the water absorption pipe 37 is partitioned by a partition plate 38, one of which is in communication with the casing 34, and the other is branched and connected to the pressure sensor 40. The upper end of the partition plate 38 extends to the water supply port 30a. Further, a water flow hole 39 of a check valve structure having a substantially conical shape in which the opening area on the casing 34 side is larger than the opening area on the pressure sensor 40 side is provided below the partition plate 38. . The pressure sensor 40 detects a remaining amount detecting means for detecting the remaining amount of water stored in the tank 30 and a flow rate discharged by the screw pump 33 based on a water pressure that changes according to the amount of water in the tank 30. It serves as a flow rate detecting means. In the present embodiment, the pressure sensor 40 is disposed at the bottom of the tank 30 to simplify the internal structure and prevent the entire structure from becoming large. However, the pressure sensor 40 may be disposed alone at the bottom of the tank 30 without partitioning the water absorption pipe 37, but considering the workability of maintenance (cleaning) and the assembly workability at the time of manufacture, It is preferable to divide and arrange the water absorption pipe 37 as in this embodiment.

  In addition, a discharge pipe 41 connected to the nose portion 13 on the downstream side is connected to the supply port located at the upper end of the casing 34. The distal end of the discharge pipe 41 is connected to the spout 18 of the nose portion 13 via the connection member 42. Further, the discharge pipe 41 has a middle portion extending upwardly curved toward the back side, and is brought into substantially contact with the tank 30 to prevent a drop in the liquid temperature inside. Reference numeral 43 denotes a heat insulating member.

  As shown in FIG. 1 and FIG. 2, a beverage is extracted from a beverage extraction material housed in a shower cap 44 as a beverage pouring member and a high-temperature liquid injected through the shower cap 44 at the lower portion of the nose portion 13. And a filter cup 50 for extracting the water.

  The shower cap 44 is detachably attached to the first slide rail portion 19 of the rail member 14 from the front, has a substantially flat plate shape, and is provided with a water spray portion 45 that is recessed downward at a predetermined position. is there. The water sprinkling part 45 has a circular shape smaller than the inner diameter of the storage part 51 of the filter cup 50 to be described later, and an annular first partition 46 and a second partition 47 project upward. In addition, a plurality of water spray holes 48 are provided in each of these. Note that the overall height of the first partition 46 is lower than the overall height of the second partition 47, and hot water overflowing from the interior surrounded by the first partition 46 is supplied between the second partition 47. Further, the total height of the second partition wall 47 is configured not to reach the upper surface attached to the shower cap 44. In addition, an engagement recess 49 that is detachably engaged with the engagement protrusion 21 of the rail member 14 is provided at the tip of the shower cap 44 so as to be recessed downward.

  The filter cup 50 is detachably attached to the second slide rail portion 20 of the rail member 14 from the front, and includes a storage portion 51 having a substantially conical cylindrical shape. The bottom of the storage portion 51 is a closed surface inclined downward toward the center thereof, and an extraction hole 52 is provided at the center, and ribs are provided so as to protrude radially from the extraction hole 52. . On the upper end edge of the storage portion 51, a placement step portion 53 placed on the second slide rail portion 20 is projected outward. In addition, a grip portion 54 for attaching and detaching operations and the like is provided on the front side of the mounting step portion 53, and a covering portion 55 that covers the shower cap 44 is provided on the edge thereof. Further, an outer edge portion 56 projects upward from the outer peripheral edge of the mounting step portion 53 in order to prevent leakage of dropped hot water.

  Inside the nose portion 13 is disposed an operation board 57 on which a segment display type liquid crystal panel 59 as display means and a plurality of switches 72 to 78 as instruction means for specifying settings and operations are mounted. An operation panel 58 is provided on the surface.

  As shown in FIG. 3, the liquid crystal panel 59 is provided with a residual water amount display unit 60 that displays the residual water amount in the tank 30 detected by the pressure sensor 40 on the left side in a stepwise manner, and a water supply display unit at a lower part thereof. 61 is provided. Further, on the upper side, an unevenness display unit 62 indicating an unevenness process or an unevenness setting time is provided, and on the right side thereof, a hot water reservation display unit 63 indicating a hot water reservation state is provided. Furthermore, a four-digit numerical value display section 64 indicating the amount of water (hot water) and time is provided at the center, which is the lower part of these. Below the numerical value display section 64, there is an extracted hot water volume display section 65 which means that the displayed numerical value is the extracted hot water volume, a post-time display section 66 which means that it is a reserved time, and an unevenness time. And a second display portion 67 which means At the lower part of the liquid crystal panel 59, a P display unit 68 that indicates the replacement time of the screw pump 33, an S display unit 69 that indicates the cleaning time of the tank 30, a 5 display unit 70 that indicates the dispensing amount, and Ten display units 71 are provided.

  Further, as an instruction means of the operation panel 58, there are provided a water heater / on switch 72, an extraction / on switch 73, a coffee heat-off / on switch 74, a hot water reservation switch 75, and an irregularity around the liquid crystal panel 59. A running time switch 76, a cup number switch 77, and an extracted hot water amount switch 78 are provided. Further, above both sides of the hot water cut-off / on switch 72, a first LED 79 which is a display means indicating that the hot water is being executed and a second LED 80 which is a display means indicating an appropriate temperature (warming) state are disposed. Has been. Further, a third LED 81 serving as a display means for indicating that the beverage is being extracted or quantitatively discharged is disposed above one (left) side of the extraction cut / on switch 73. A fourth LED 82 serving as a display means for indicating that the extracted beverage is being kept warm is disposed above one (left) side of the coffee keep-off / on switch 74.

  In the beverage extraction device, power is supplied to the microcomputer 85 of the control board 84 disposed inside the nose portion 13 by setting the main switch 83 disposed on the side surface of the bottom body 15 to the ON position in the main body 10. The microcomputer 85 controls the program according to a preset program.

  First, the transition of the operation panel 58 by the operation of the switches 83 and 72 to 78 will be specifically described.

  First, the main switch 83 is a main power source capable of supplying and shutting off power to each load component. As shown in FIG. 4A, in the off state, the liquid crystal panel 59 and LEDs 79 to 82 which are display means. Is off. When turned on, the liquid crystal panel 59 is lit in the same state as the previous setting screen, as shown in FIG.

  Also, the hot water on / off switch 72 is a hot water instructing means for heating (boiling) the liquid (water) in the tank 30, and when operated, as shown in FIG. 5 (A), the first LED 79 is turned on. The liquid in the tank 30 is heated by the heater 31. Thereafter, when the heating is finished, as shown in FIG. 5B, the first LED 79 is turned off and the second LED 80 is turned on, and the liquid in the tank 30 is kept warm by the heater 31. Note that the LEDs 81 and 82 remain off.

  In the present embodiment, the hot water on / off switch 72 serves as a cleaning instruction unit that performs cleaning of the tank 30 using a cleaning agent (citric acid). Specifically, the microcomputer 85 measures the execution time of heating control including boiling and heat retention, and displays the S display unit 69 when the accumulated time reaches 720 hours. Then, when the hot water on / off switch 72 is pressed for 3 seconds or longer, the first LED 79 and the S display portion 69 of the liquid crystal panel 59 are blinked, and each segment of the numerical value display portion 64 is turned on in turn to simulate rotation. While being displayed, cleaning control is performed to intermittently reversely rotate the screw pump 33. Note that the citric acid cleaning control is executed for a preset time, and the S display unit 69 is turned off to end the citric acid cleaning control. In addition, in order to forcibly end the citric acid cleaning control by the user, the power is shut off by operating the main switch 83.

  Further, the extraction cut-off / on switch 73 is a supply instruction unit and a discharge instruction unit that operate the screw pump 33 to supply a predetermined amount of liquid. As shown in Fig. 4, the LEDs 79 and 80 are turned off and the LEDs 81 and 82 are turned on, the beverage extraction control is executed with the extraction setting as displayed on the liquid crystal panel 59 selected by the other switches 74 to 78, and the beverage warming control is performed. Execute. Further, when a long press operation is performed for 3 seconds or more, as shown in FIG. 6 (B), the liquid crystal panel 59 blinks the third LED 81 with only the remaining water amount display section 60 lit, and the other LEDs 79, 80 and 82 are turned off, and a predetermined amount of liquid in the tank 30 is poured out.

  Further, the coffee warming-off / on switch 74 is a beverage warming instruction means for executing or stopping the warming of the beverage extracted in the jug 26, and is switched on and off in order every time the operation is performed, and the fourth LED 82 is turned on ( Switch between ON) and OFF (OFF) in order. It should be noted that the heat retention control is automatically ended (turned off) when continued for 3 hours, and the fourth LED 82 is also turned off. The liquid crystal panel 59 displays the extraction setting (see FIG. 4B) selected by the switches 74 to 78.

  The hot water reservation switch 75 is a hot water reservation instruction means for boiling the liquid in the tank 30 after a predetermined time. When operated in the extraction setting state shown in FIG. 4B, as shown in FIG. In addition, the reservation display unit 63, the numerical value display unit 64, and the post-time display unit 66 are turned on. The numerical value display section 64 displays the previous reservation setting time. Further, each time the hot water reservation switch 75 is operated, the numerical value display section 64 is incremented by one. When the operation is performed in the state of the maximum set time “12”, the state returns to the state of the minimum set time “1”. It should be noted that this hot water reservation control is canceled by operating another hot water on / off switch 72, and the hot water control is immediately executed. If the hot water reservation switch 75 is continuously pressed, the set time is continuously incremented after 1 second.

  The unevenness time switch 76 is an unevenness time instruction means for inputting the supply stop time of the unevenness process, which is one process of beverage extraction control. When operated, as shown in FIG. The display unit 62, the numerical value display unit 64, and the second display unit 67 are turned on. The numerical value display section 64 displays the previous uneven setting time. Further, each time the unevenness time switch 76 is operated, the numerical value display section 64 is incremented by 5. When the operation is performed in the state of the maximum set time “30”, the state returns to the state of the minimum set time “0”. This unevenness time setting display returns to the extraction setting display shown in FIG. 4B when 3 seconds have elapsed after the operation. When the uneven time switch 76 is operated during the beverage extraction control, the set uneven time is displayed only during the operation.

  The cup number switch 77 is a supply amount instruction means for inputting a supply amount (that is, a beverage extraction amount) by the screw pump 33. When operated in the extraction setting state shown in FIG. As shown to A), the 5 display part 70 which is a display of the number of cups of the extraction amount of the liquid crystal panel 59 is turned off, and the 10 display part 71 is turned on. When operated again in this state, the 10 display section 71 is turned off and the 5 display section 70 is turned on. At this time, in the liquid crystal panel 59, the numerical value display section 64 and the extracted hot water display section 65 are further lit. Among them, the numerical value display section 64 displays the previous extracted hot water volume setting by an operation of an extracted hot water volume switch 78 described later.

  Further, the hot water amount switch 78 is a supply amount instruction means for finely adjusting and inputting the supply amount by the screw pump 33. When an operation is detected, the numerical value display section 64 of the liquid crystal panel 59 is displayed as shown in FIG. An increase of 50 (milliliter) is displayed. In addition, when the extraction amount is set to 10 cups, when the operation is performed in a state where the maximum set hot water amount is “2000”, the minimum set hot water amount is “1400”. Further, when the extraction amount is set to 5 cups, if the operation is performed with the maximum set hot water amount “1350”, the minimum set hot water amount “700” is obtained. Further, when the extracted hot water amount switch 78 is continuously pressed, the set hot water amount is continuously incremented after 1 second.

  In this way, the uneven time and the amount of extraction can be changed, and a stable and delicious beverage can be extracted according to the user's preference.

  The unevenness time switch 76 and the extracted hot water amount switch 78 constitute a reset key for clearing the cumulative operation time of the screw pump 33 when operated when the power is turned on. Specifically, the microcomputer 85 measures the operating time of the screw pump 33, and when the accumulated operating time reaches 125 hours, turns on the P display unit 68 to notify the user that it is time to replace the screw pump 33. To do. Then, after the user requests replacement by the manufacturer, the cumulative operation time of the screw pump 33 is reset and the P display is displayed by turning on the power while the uneven time switch 76 and the extracted hot water amount switch 78 are operated. The unit 68 is turned off.

  The unevenness time switch 76 and the extraction off / on switch 73 are operated when the power is turned on to change the basic set values of the total amount of discharged hot water, the boiling temperature, and the beverage warming temperature that can be set. Configure the execution key. Specifically, the data correction screen is displayed by turning on the power while the uneven time switch 76 and the extraction off / on switch 73 are operated. In this data correction screen, the second digit of the hour is blinked on the numerical value display section 64, “1” is displayed to indicate the correction state of the total discharged hot water amount, and “2” is displayed to indicate the correction state of the boiling water temperature. And “3” is displayed to indicate the beverage warming temperature correction state. In any state, the numerical display unit 64 uses the first digit of the hour and the two digits of the minute, and indicates a setting state from +10 to -10. In the numerical value display section 64, the first digit of the hour indicates either plus setting or minus setting, and “−” of minus setting is displayed. In the numerical value display portion 64, the two digits of the number display a numerical value from 0 to 10. Further, the set numerical value is increased by operating the hot water reservation switch 75 and decreased by operating the cup number switch 77. Furthermore, in the correction of the total discharge hot water amount, the discharge amount that can be set by about 10 ml is increased / decreased for every change of the set value, and in the correction of the hot water temperature, the + side is 0.5 ° C. minus 1 for every change of the set value. The boiling temperature of 0.degree. C. is increased or decreased. In the correction of the beverage warming temperature, the warming temperature of approximately 1.degree.

  The control by the microcomputer 85 heats the water stored in the tank 30 and adjusts the temperature to the optimum temperature for beverage extraction. In addition, a predetermined amount of hot water is poured in accordance with the specified amount of extracted hot water, and is temporarily stopped, and an unevenness process is performed for a predetermined time. Moreover, when this unevenness process is complete | finished, the drip process which pours a predetermined amount of hot water intermittently will be performed, and the target drink extraction will be performed.

  Specifically, the microcomputer 85 determines the remaining amount of liquid in the tank 30 based on the detection value of the pressure sensor 40 and causes the remaining water amount display unit 60 to display a level. That is, the lower limit value (remaining amount 200 ml) of the remaining amount of liquid in the tank 30 where the output value of the pressure sensor 40 is stabilized is set as the initial point position, and the state where 4000 ml of liquid is stored is set as the full point position. Depending on the resolution of the AD converter of the microcomputer 85, for example, when the detection value of the pressure sensor 40 at the initial point position is 180 and the detection value at the full point is 560, the remaining amount of liquid in the tank 30 The judgment value is as shown in FIG. 9A by calculation, and the capacity change is 10 ml per change. The ROM, which is a storage means built in the microcomputer 85, stores the judgment value of the initial point ((1) in FIG. 9A) and the judgment value of the full point ((19) in FIG. 9A). Is preset (stored). Therefore, the determination value of the amount of water between these can be calculated by calculation, and the remaining amount of liquid in the tank 30 is determined based on the calculated determination value.

  In FIG. 9A, (2) is a preset OFF point of the heater 31. Further, (3) is a starting point of a preset divided area. This divided region start point is a value obtained by adding the amount of hot water (300 ml) at the OFF point of the heater 31 that is a preset lower limit value to the minimum amount of hot water (700 ml) that can be extracted in this embodiment. Further, in the present embodiment, the hot water amount at the starting point of the divided area is set as a display threshold value of the water supply display unit 61, and is turned on when it is lower and turned off when it is higher. And it is set as the structure which carries out 16 level division (4-18) between this division | segmentation area | region start point and a full point, and displays the level of the residual water amount display part 60 in the ratio. Furthermore, in order to prevent misuse due to excessive storage in the tank 30, a full limit point (4300 ml) is preset as (20).

  The determination value is also used as a supply amount determination value for determining the supply amount when the screw pump 33 dispenses. In other words, if the determination value is obtained by subtracting the set supply amount from the remaining liquid amount (determination value) based on the detection value of the pressure sensor 40 detected before supply, the desired supply amount has been dispensed. become. For this reason, the screw pump 33 is operated until the target judgment value is reached while judging the detection value of the pressure sensor 40 during water supply. Moreover, the water supply amount at that time is sequentially displayed on the numerical value display section 64 of the liquid crystal panel 59.

  However, the value detected by the pressure sensor 40 varies depending on the water flow to the water suction pipe 37, that is, the water supply pressure, when the screw pump 33 is operated. Therefore, the microcomputer 85 serves as a correction unit, and corrects the supply amount judgment value with a preset correction pressure value based on a detection value before supply for operating the screw pump 33, and executes water supply control. It is configured. Specifically, in this embodiment, as shown in FIG. 9B, the tank 30 is partitioned into 18 regions in the height direction, and the corrected pressure value is based on the water supply pressure of the screw pump 33 for each partition. Is set. The correction pressure value data table is set (stored) in a ROM which is a built-in storage means.

  Specific examples of the above supply method and correction method include, for example, when the remaining amount of liquid in the tank 30 based on the detection value by the pressure sensor 40 is 3000 ml (detection value 460) and the extraction setting is 900 ml of 5 cups. If the detected value by the pressure sensor 40 at the time when the operation is finished is 370 (liquid remaining amount 2100 ml), the dispensing is performed as desired. Therefore, the screw pump 33 is operated until the detected value of the pressure sensor 40 reaches 370 during water supply. However, since the pressure sensor 40 detects the feed water pressure together, the correction pressure value 1 of the fifth section is added to the judgment value at the start of supply, and the judgment value of the discharge hot water amount is calculated and the extraction process is executed. To do.

  Not only the correction pressure value of the section at the start of supply, but also the pressure correction value may be changed sequentially as the supply progresses. Specifically, when the supply is started, the corrected pressure value 1 of the fifth section is added to the determination value, and when it is determined that the sixth section is reached based on the corrected determination value, the corrected pressure value 1 is added to the determination value. Then, the supply proceeds while sequentially changing the corrected pressure value, reaches the ninth section, and the screw pump 33 may be stopped when the target judgment value (315 + 2) is reached.

  On the other hand, the detected value of the pressure sensor 40 and the actual remaining amount of liquid in the tank 30 have an error over time. Therefore, in the present embodiment, the initial point detection means by the maintenance operator operating the coffee warming-off / on switch 74 and the extracted hot water amount switch 78 among the switches 72 to 78 based on the actual remaining amount of liquid. The coffee warming-off / on switch 74 and the unevenness time switch 76 constitute a full point detection means. When the microcomputer 85 detects that the coffee warming-off / on switch 74 and the extracted hot water amount switch 78 are operated when power is turned on, the microcomputer 85 determines that the inside of the tank 30 is at the initial position, and the pressure sensor 40 The pressure in the state is detected and stored. Further, when it is detected that the coffee warming off / on switch 74 and the unevenness time switch 76 are operated when the power is turned on, it is determined that the tank 30 is at the full point position, and the pressure sensor 40 is in that state. The pressure is detected and stored.

  When the initial point correction data and the full point correction data are stored, the microcomputer 85 corrects the determination value based on these correction data. Specifically, as shown in FIG. 4A, the microcomputer 85 stores an initial point set value (= determination value) and a full point set value in advance. Then, the set initial value obtained by subtracting the initial point set value from the full point set value and the actually measured value obtained by subtracting the initial point detected value from the stored full point detected value are divided, and the calculated value is corrected by the correction coefficient. Remember as. Therefore, a desired supply amount can be obtained by further multiplying the judgment value by a correction coefficient. Note that these actually measured values and the calculated correction coefficients are stored in a rewritable nonvolatile memory.

  Incidentally, when the coffee heat-off / on switch 74 and the extracted hot water amount switch 78 are operated when the power is turned on, as shown in FIG. 10 (A), the minimum level segment of the remaining water amount display section 60 is turned on, and the numerical display section At 64, “0” indicating the initial point is turned on. Thereafter, when the value detected by the pressure sensor 40 is within the preset allowable range, the segment of the minimum level of the remaining water amount display unit 60 blinks and “PAS” indicating that the numerical value display unit 64 stores the value. Is lit. On the other hand, when it is outside the preset allowable range, the segment of the minimum level of the remaining water amount display unit 60 is blinked and “Err” indicating that it is stored in the numerical value display unit 64 is lit.

  Further, when the coffee heat-off / on switch 74 and the uneven time switch 76 are operated when the power is turned on, as shown in FIG. 10B, all the segments up to the maximum level segment of the remaining water amount display section 60 are turned on. Then, “FUL” indicating the full point is turned on in the numerical value display section 64. After that, when the value detected by the pressure sensor 40 is within the preset allowable range, the segment up to the maximum level of the remaining water amount display unit 60 blinks and indicates that the numerical value display unit 64 stores it. “PAS” is lit. On the other hand, if it is outside the preset allowable range, the segment up to the maximum level of the remaining water amount display unit 60 is blinked and “Err” indicating that it is stored in the numerical value display unit 64 is lit.

  In this embodiment, before the water supply by the screw pump 33 is started, the screw pump 33 is reversed to return the liquid in the discharge pipe 41 whose temperature has been lowered to the tank 30. Then, after performing a predetermined standby process until the liquid level becomes stable, a normal rotation supply operation (discharge process) is performed. Further, after completion of the supply, similarly, after performing a predetermined standby process until the liquid level is stabilized, if it is determined that the supply amount is insufficient based on the detection value of the pressure sensor 40, an adjustment process for restarting the screw pump 33 is performed. Execute. In addition, when it supplies until it judges that it supplied to the supply instruction | indication quantity in the discharge process, possibility that the supply instruction | indication quantity may be exceeded in the state which reached the adjustment process arises. For this reason, in the present embodiment, the end of the discharge process is set before the target supply instruction amount, and the fine adjustment is always performed in the adjustment process. In other words, the discharge process is configured to stop at an amount obtained by subtracting a preset preliminary adjustment amount from the supply instruction amount.

  Moreover, before the start of water supply, the remaining amount of liquid (ex1500 ml) in the tank 30 based on the detection value of the pressure sensor 40 is the supply instruction amount (ex1500 ml) by the switch operation of the operation panel and the preset lower limit value. When the amount of heater OFF point (ex300 ml) shown in (A) is less than the added amount, the remaining water amount display unit 60 and the water supply display unit 61 are blinked as notification means, and the screw pump 33 is not operated. It is said. Moreover, when the liquid temperature based on the detection value by the container temperature sensor 32 is lower than a preset temperature (detection value 94 ° C. of the sensor 32) before the water supply starts, the water supply operation by the screw pump 33 is not executed. .

  Further, when the water supply operation by the screw pump 33 exceeds a preset allowable time, the water supply operation is stopped. If it is determined that the remaining amount of liquid based on the detection value of the pressure sensor 40 has increased during the water supply operation by the screw pump 33, the water supply operation is stopped.

  Furthermore, when it is determined that the liquid replenishment exceeds the full limit point which is the preset upper limit value in the tank 30 based on the detection value of the pressure sensor 40 during non-water supply, the piezoelectric element mounted on the control board 84 is used. A notification sound is output by a buzzer (not shown), and the heating (heat retention) operation by the heater 31 is stopped as well as the water supply operation by the screw pump 33. And if it is judged that the liquid in the tank 30 has fallen below the preset lower limit (300 ml) based on the detection value of the pressure sensor 40, the heating operation by the heater 31 is stopped.

  Next, the control by the microcomputer 85 will be specifically described.

  As shown in FIG. 11, when power is turned on by operating the main switch 83, the microcomputer 85 detects whether or not an initial point correction operation is performed in step S1. If an initial point correction operation is detected, the process proceeds to step S2. If an initial point correction operation is not detected, the process proceeds to step S3.

  In step S2, the current pressure detection is executed by the pressure sensor 40, and an initial point correction process for storing the detected value as the initial point actual measurement value is executed.

  In step S3, it is detected whether or not a full point correction operation has been performed. If a full point correction operation is detected, the process proceeds to step S4.

  In step S4, the current pressure detection is executed by the pressure sensor 40, and the full point correction process for storing the detected value as the full point actual measurement value is executed.

  When no correction operation is detected when power is turned on, or when the initial point correction process in step S2 ends, or when the full point correction process in step S4 ends, the switch input process in step S5 and the step The capacity monitoring process from S6 to step S11 is performed in parallel.

  In the switch input process in step S5, the operation of each of the switches 72 to 78 is detected. When the operation is detected, the setting is changed based on the switches 72 to 78 and the control is shifted to the control. Thereafter, the process proceeds to the liquid crystal display change process in step S12, the display is changed to the display based on the change, and the process returns to step S5.

  In the capacity monitoring process in steps S6 to S11, first, in step S6, a remaining amount detection process for detecting the remaining amount of liquid in the tank 30 by the pressure sensor 40 is executed.

  Thereafter, in step S7, it is determined whether or not the remaining amount of liquid based on the detection value is equal to or less than a preset lower limit value. If it is equal to or lower than the lower limit value, the process proceeds to step S8, the heating stop process by the heater 31 is executed, the liquid crystal display change process of step S12 is executed, and the process returns to step S6. If the liquid remaining amount is greater than the lower limit value, the process proceeds to step S9.

  In step S9, it is determined whether or not the remaining amount of liquid based on the detection value is equal to or greater than a preset upper limit value (full limit point). If the value is equal to or greater than the upper limit value, the process proceeds to step S10, and after performing a stop process that does not operate the predetermined load components 28, 31, and 36, in step S11, a notification process for outputting a notification sound is performed and a step is performed. The liquid crystal display change process of S12 is executed, and the process returns to step S6.

  In the switch input process of step S5, when the hot water on / off switch 72 is operated in less than 3 seconds in a standby state where no control is executed, the heater 31 is operated to boil the liquid in the tank 30. After the boiling control is executed, the liquid heat retention control for maintaining the liquid in the tank 30 at a predetermined temperature is executed. Further, when operated for 3 seconds or more in the standby state, the screw pump 33 is intermittently reversely rotated to execute citric acid cleaning control. Furthermore, when the hot water full / on switch 72 is operated during the execution of the boiling control or the liquid heat retention control, the heater 31 is stopped and the control is stopped.

  Further, when the coffee warming-off / on switch 74 is operated, the warming heater 28 is operated, and the beverage warming control is performed to keep the beverage extracted in the jug 26 at a predetermined temperature. Further, when the coffee warming-off / on switch 74 is operated during the beverage warming control, the warming heater 28 is stopped and the beverage warming control is ended.

  Further, when the hot water reservation switch 75 is operated, the hot water reservation time is set as described above. When the uneven time switch 76 is operated, the uneven time is set. When the cup number switch 77 is operated, the number of cups is changed. When the extracted hot water amount switch 78 is operated, the amount of extracted hot water is changed.

  When the extraction cut / on switch 73 is operated, beverage extraction control or quantitative drainage control is executed.

  Specifically, when the operation of the extraction cut / on switch 73 is detected, as shown in FIG. 12, the microcomputer 85 first resets and starts the built-in timer in step S20, and then in step S21. Wait until the operation is stopped.

  Then, when the operation stop of the extraction off / on switch 73 is detected, in step S22, the timer is stopped, and then in step S23, it is detected whether or not the measurement time is less than 3 seconds. If it is less than 3 seconds, the process proceeds to step S24, and if it is 3 seconds or more, the process proceeds to step S33.

  In step S24, the beverage extraction setting set by operating the operation panel 58 is read, and in step S25, it is detected by the container temperature sensor 32 whether the liquid temperature in the tank 30 is an appropriate temperature (94 ° C. or higher). To do. If the temperature is appropriate, the process proceeds to step S26. If the temperature is not appropriate, the process proceeds to step S28.

  In step S26, the remaining amount of liquid is determined based on the detection value of the pressure sensor 40, and the supply instruction amount in which the remaining amount of liquid is set, that is, the amount obtained by adding the beverage extraction amount and a preset lower limit value. Determine whether there are many. If the remaining amount of liquid satisfies the condition, the process proceeds to step S27. If the remaining amount of liquid does not satisfy the condition, the process proceeds to step S28.

  In step S27, it is determined whether or not the determined remaining liquid amount is in an excessive state equal to or greater than the full point. If the residual water amount is excessive, the process proceeds to step S28. If the residual water amount is not excessive, the process proceeds to step S29.

  That is, when the liquid temperature in the tank 30 is not an appropriate temperature, when the remaining amount of liquid is small, and when the remaining amount of liquid exceeds the full point, the process proceeds to step S28, and the liquid crystal panel 59 and / or the piezoelectric buzzer is used. Execute the notification process and return without executing any control.

  In step S29, the heat retaining heater 28 is turned on to operate, and then in step S30, the third LED 81 indicating the beverage extraction execution state and the fourth LED 82 indicating the beverage heat retention execution state are turned on. And the drink extraction control of step S31 and the drink heat retention control of step S32 are processed in parallel. These controls are executed independently, and return individually when finished.

  On the other hand, if the operation time of the extraction off / on switch 73 is 3 seconds or longer in step S23, the quantitative drainage control is executed in step S33 and the process returns. In this quantitative drainage control, the screw pump 33 is operated until the liquid in the tank 30 is drained by a predetermined amount (1 liter) based on the detection value of the pressure sensor 40. This eliminates the need to turn the entire device upside down when the liquid in the tank 30 is exchanged, thereby improving user convenience. However, even in this case, when the remaining liquid amount in the tank 30 reaches the lower limit value, the operation of the screw pump 33 is stopped.

  Next, the beverage extraction control in step S31 will be specifically described. This beverage extraction control starts timing by a timer at the same time as the discharge operation by forward rotation of the screw pump 33. If the beverage extraction control does not end even if it exceeds a preset allowable time, the operation stops at that point. It is configured to do. Further, when it is determined that the liquid has been replenished in the tank 30 based on the detection value of the pressure sensor 40 during the execution of the beverage extraction control, the beverage extraction control is terminated, and excessive supply of liquid due to misuse can be prevented. .

  In this beverage extraction control, the microcomputer 85 first executes a pump reverse rotation process in step S31-1, as shown in FIG. In this pump reverse rotation process, the screw 35 is reversely rotated by the motor 36 to return the cooled liquid in the discharge pipe 41 to the tank 30. In the present embodiment, this pump reverse rotation process is configured to execute an intermittent reverse rotation operation of 3 seconds on and 3 seconds off three times. This prevents a detection error due to the inclusion of the content contained in the liquid on the pressure sensor 40, and brings the liquid temperature in the discharge pipe 41 closer to the liquid temperature in the tank 30 at the start of supply to the filter cup 50. The liquid having a low temperature can be supplied to prevent the taste of the beverage to be extracted from being affected.

  Next, in step S31-2, a hot water amount calculating step for calculating (determining) the pump stop hot water amount in the unevenness process and the discharge process described later is executed. In the present embodiment, in this hot water amount calculating step, first, a standby step (about 3 seconds) is performed to eliminate the fluctuation of the liquid level in the tank 30 due to the pump reverse rotation step, and then the current liquid is detected by the pressure sensor 40. Re-detect the remaining amount. Then, the actual remaining amount of liquid before supply is determined based on the detected value and the correction coefficient. Thereafter, based on the set supply instruction amount and the supply amount in the unevenness process and the supply amount in the discharge process preset by the supply instruction amount, the remaining liquid amount (judgment value) at the end state of each step ) Is calculated (determined).

  Next, in step S31-3, after the liquid is supplied with the supply amount set by rotating the screw pump 33 in the forward direction, the unevenness process for maintaining the set standby time stop state is executed. At this time, the microcomputer 85 corrects the liquid remaining amount (supply) determination value based on the detection value of the pressure sensor 40 with the correction pressure value according to the liquid remaining amount, and determines the supply amount. When it is determined that the set supply amount of liquid has been discharged, the process waits until the unevenness (standby) time set by the operation of the operation panel 58 elapses, and the unevenness process ends.

  Next, in step S31-4, a discharge process for supplying the liquid supply amount set by operating the screw pump 33 is executed. At this time, the microcomputer 85 detects the remaining amount of liquid by the pressure sensor 40 as described above, corrects it with a correction pressure value according to it, and operates the screw pump 33 until the target supply amount is reached. Specifically, when the extraction setting by the user is 5 cups, first, the screw pump 33 is operated to supply a predetermined supply amount of liquid so that the liquid does not overflow from the shower cap 44 or the filter cup 50. . Thereafter, the remaining supply is executed after a predetermined waiting time. Further, when the extraction setting by the user is 10 cups, the supply amount is large, and therefore the first half of the discharge operation for 5 cups is performed twice.

  Next, in step S31-5, an adjustment process is performed when the amount of liquid set based on the actual liquid remaining amount cannot be supplied. In the present embodiment, this adjustment step is performed first by performing a standby step (about 5 seconds) in order to eliminate the fluctuation of the liquid level in the tank 30 due to the forward rotation operation of the screw pump 33, and then by the pressure sensor 40. The remaining amount of liquid is detected. Then, the actual liquid remaining amount after supply is determined based on the detection value and the correction coefficient. Thereafter, it is determined whether or not the liquid remaining amount (determination value) in the end state set in step S31-2 has been reached. When the set judgment value has been reached, the adjustment process is terminated, and when the set judgment value has not been reached, the screw pump 33 is operated to supply the deficient liquid. However, in the present embodiment, the discharge process is configured to stop at an amount obtained by subtracting the preliminary adjustment amount from the supply instruction amount, and thus this adjustment step is executed almost completely.

  Finally, in step S31-6, after waiting for a preset time until the liquid remaining in the filter cup 50 is substantially extracted to the jug 26, a notification process indicating that the beverage extraction is completed is executed. To return (end beverage extraction control).

  As described above, the beverage extraction device of the present invention supplies the liquid in the tank 30 while determining the supply amount from the detection value of the pressure sensor 40. In addition, since the supply amount judgment value set in advance is corrected, stable and accurate supply can be performed without causing a detection error.

  Specifically, the tank 30 is partitioned into a predetermined number along the height direction, the correction pressure value is set for each section, and the correction value is corrected by the correction pressure value. Can prevent a detection error associated with, and obtain an accurate supply amount. Further, a correction coefficient for correcting the supply amount judgment value is calculated based on the actual value detected by the pressure sensor 40 when detecting the initial point and the full point based on the actual liquid remaining amount, and the supply coefficient is calculated using this correction coefficient. Since the quantity judgment value is corrected, it is possible to reliably prevent the occurrence of an error over time and always obtain an accurate supply amount.

  Further, when the liquid supply operation is completed, after performing a standby process for stabilizing the liquid level in the tank 30, if it is determined that the supply amount is insufficient based on the detection value of the pressure sensor 40, the screw pump 33 is operated again. Execute the process. In addition, in the discharge process, in order to almost always execute the adjustment process, the discharge process is stopped by an amount obtained by subtracting the preliminary adjustment amount from the supply instruction amount. Therefore, a more stable supply amount can be obtained.

  Moreover, the beverage extraction control is notified when the remaining amount of liquid in the tank 30 is less than the sum of the supply instruction amount and the lower limit value, and when the temperature detected by the container temperature sensor 32 is lower than the preset temperature. Since notifying and not executing by means, it is possible to improve the convenience of the user, and it is possible to prevent a beverage having a bad taste from being extracted due to misuse by the user.

  Further, when the supply operation by the supply means exceeds a preset allowable time, the beverage extraction control is stopped, and when the remaining amount of liquid in the tank 30 falls below a preset lower limit value, the heating operation by the heater 31 is performed. The safety of the product can be improved. And since the idling of the screw pump 33 can be reliably prevented, the life can be extended. Similarly, when the remaining amount of liquid in the tank 30 exceeds a preset upper limit value, it is notified by the notification means, and since all operations including the supply operation by the screw pump 33 are not executed, misuse due to excessive storage can be prevented. Therefore, the safety and stability of the product can be improved.

  The liquid container of the present invention is not limited to the configuration of the above embodiment, and various modifications can be made.

  For example, in the above-described embodiment, the initial point detection unit and the full point detection unit based on the actual liquid remaining amount in the tank 30 are configured by the switch operated by the operator, but are not limited to the switch operation. Absent. Specifically, a photocoupler is provided in the discharge pipe 41 whose liquid level changes according to the capacity in the tank 30, and a change due to the presence or absence of water is detected by this photocoupler, whereby the initial point position and the full point position are determined. It may be detected. In this way, since the successive correction value can be changed, the stability can be further improved.

  Moreover, although the said embodiment demonstrated using the beverage extraction apparatus which has the heater 31 and the filter cup 50, it is applicable similarly to the electric pot which does not mount the filter cup 50. FIG. Further, the present invention can also be applied as a liquid container that reliably supplies a specified amount of a specific liquid without mounting the heater 31.

It is a fragmentary sectional view which shows the drink extraction apparatus which concerns on embodiment of this invention. It is a disassembled perspective view which shows a rail member, a shower cap, and a filter cup. It is a block diagram including the operation panel of a drink extraction device. (A), (B) is a front view which shows the transition of the operation panel at the time of operating a main switch. (A), (B) is a front view which shows the transition of the operation panel at the time of operating a kettle out / on switch. (A), (B) is a front view which shows the transition of the operation panel at the time of operating an extraction off / on switch. (A) is a front view showing the transition of the operation panel when the hot water reservation switch is operated and (B) is the operation time switch. (A) is a front view which shows transition of the operation panel at the time of operating a cup number switch, (B) at the time of operating an extracted hot water amount switch. (A) is a chart showing the remaining amount of liquid in the tank and the judgment value, and (B) is a chart showing the water amount range and the correction pressure value. (A) is a front view showing transition of an operation panel when an initial point detection operation is performed, and (B) is a transition of an operation panel when a full point detection operation is performed. It is a flowchart which shows control of the microcomputer in the state by which electric power was turned on. It is a flowchart which shows the control of the microcomputer when an extraction cut / on switch is operated. It is a flowchart which shows the drink extraction control of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Main body 13 ... Nose part 26 ... Jug 28 ... Insulation heater 29 ... Insulation temperature sensor 30 ... Tank 31 ... Heating heater (heating means)
32. Container temperature sensor (temperature detection means)
33 ... Screw pump (supply means)
36 ... Motor (drive means)
37 ... Water absorption pipe 40 ... Pressure sensor (remaining amount detection means)
41 ... Discharge pipe 44 ... Shower cap 50 ... Filter cup 58 ... Operation panel 59 ... Liquid crystal panel (display means)
72-78 ... switch (instruction means)
83 ... Main switch 84 ... Control board 85 ... Microcomputer (control means, correction means)

Claims (24)

A tank for storing liquid;
Supply means for supplying liquid in the tank;
Supply instruction means for operating the supply means to supply a predetermined amount of liquid;
A remaining amount detecting means for detecting a remaining amount of liquid in the tank;
Control means for controlling the supply means while judging the supply amount of the liquid based on the detection value of the remaining amount detection means;
Correction means for correcting a preset supply amount judgment value by the control means based on a detection value of the remaining amount detection means before being supplied by the supply means;
A liquid container comprising:   The liquid container according to claim 1, wherein the remaining amount detecting means is a pressure sensor disposed at a bottom of the tank.   An initial point position and a full point position are set in advance as the liquid remaining amount in the tank, and an initial point detection unit and a full point detection unit based on the actual liquid remaining amount are provided, and the detection time by the detection unit is 3. The liquid container according to claim 1, wherein the correction unit corrects a supply amount determination value of the control unit based on a detection value of the remaining amount detection unit.   The correction means is detected by the remaining amount detection means based on the preset initial point setting value and full point setting value of the remaining amount detection means, and detection of the initial point detection means and full point detection means. 4. The liquid container according to claim 3, wherein a correction coefficient is calculated from the initial point detection value and the full point detection value, and the supply amount determination value is corrected by the correction coefficient.   The said correction | amendment means correct | amends the supply amount judgment value of the said control means with the correction | amendment pressure value based on the water supply pressure by the said supply means, The any one of Claim 2 thru | or 4 characterized by the above-mentioned. The liquid container as described.   The liquid container according to claim 5, wherein the tank is divided into a predetermined number along the height direction, and the correction pressure value is set for each of the divisions.   When the liquid supply operation based on the detection values of the correction unit and the remaining amount detection unit is completed, the control unit performs a standby process for stabilizing the liquid level in the tank, and then detects the detection value of the remaining amount detection unit. The liquid container according to any one of claims 1 to 6, wherein when the supply amount is determined to be insufficient based on the control unit, an adjustment step of re-operating the supply unit is executed.   The supply means is a screw pump capable of a forward rotation operation for supplying the liquid in the tank to the outside and a reverse rotation operation for backflowing the liquid into the tank. The liquid container according to any one of claims 1 to 7, wherein a reverse operation is executed to reversely flow the liquid in the discharge pipe connected to the supply means into the tank.   9. The liquid according to claim 8, wherein after the reverse operation by the supply means, a standby process for stabilizing the liquid level in the tank is executed, and then the normal supply operation by the supply means is executed. container.   The liquid container according to claim 8 or 9, further comprising a cleaning control for intermittently executing a reverse rotation operation by the supply means.   The liquid container according to any one of claims 1 to 10, further comprising supply amount instruction means for inputting a supply amount by the supply means.   And a notification unit that is operated when a remaining amount of liquid in the tank based on a detection value of the remaining amount detection unit is smaller than an amount obtained by adding a supply instruction amount by the supply amount instruction unit and a preset lower limit value. The liquid container according to claim 11.   When the remaining amount of liquid in the tank based on the detection value of the remaining amount detecting means is less than the sum of the supply instruction amount by the supply amount instruction means and a preset lower limit value, the supply means is operated. The liquid container according to claim 11 or 12, wherein the liquid container is not allowed to be allowed to enter.   The liquid container according to any one of claims 11 to 13, wherein when the supply operation by the supply means exceeds a preset allowable time, the supply operation is stopped.   The liquid container according to any one of claims 1 to 14, further comprising heating means for heating the liquid in the tank.   11. The heating operation by the heating unit is stopped when a remaining liquid amount in the tank based on a detection value of the remaining amount detection unit falls below a preset lower limit value. Liquid container.   The liquid container according to claim 15 or 16, further comprising a filter cup for extracting a beverage from a beverage extraction material accommodated therein by injection of a high-temperature liquid from the supply means.   18. The liquid container according to claim 17, further comprising an uneven process for maintaining a state where the liquid supply is stopped after supplying a predetermined amount of high-temperature liquid set in advance by the supply means.   19. The liquid container according to claim 18, further comprising an uneven time instructing unit for inputting a supply stop time of the uneven process.   The apparatus further comprises temperature detecting means for detecting the liquid temperature in the tank, and the control means does not execute the liquid supply operation by the supplying means when the temperature detected by the temperature detecting means is lower than a preset temperature. The liquid container according to claim 17, wherein the liquid container is a liquid container.   21. The liquid container according to claim 1, further comprising discharge instruction means for discharging the liquid in the tank by the supply means.   The notification device according to any one of claims 1 to 21, further comprising a notification unit that is operated when a remaining liquid amount in the tank based on a detection value of the remaining amount detection unit exceeds a preset upper limit value. The liquid container according to item.   The liquid container according to any one of claims 1 to 22, wherein when the remaining amount of liquid in the tank exceeds an upper limit value, at least the supply operation by the supply unit is not executed.   The liquid container according to any one of claims 1 to 23, wherein the supply operation is stopped when a liquid is supplied into the tank during the supply operation by the supply means.

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