JP2007255828A - Beverage dispenser - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a beverage dispenser capable of preventing a problem on scattering of cooling water in a water tank to appliances around the water tank. <P>SOLUTION: This beverage dispenser 1 comprising the water tank 29 for storing the cooling water, an evaporation pipe 30 for cooling the cooling water in the water tank 29, cooling pipes 7, 21, 44 immersed in the cooling water in the water tank 29, and a stirrer 64 for stirring the cooling water in the water tank 29, cooling the dilution water passing through each of the cooling pipes by the cooing water, and discharging the same, comprises a float switch 72 detecting a water level in the water tank 29, and a control portion 11 controlling an operation of the stirrer 64, and the control portion 11 stops the stirrer 64 when the float switch 72 detects a prescribed low water level of the cooling water in the water tank 29, that is, a water level to stop the stirrer. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention includes a water tank for storing cooling water, a water tank cooler for cooling the cooling water in the water tank, a cooling coil immersed in the cooling water in the water tank, and an agitator for stirring the cooling water in the water tank. The present invention relates to a beverage dispenser that cools and discharges dilution water that passes through a cooling coil with cooling water.

  Conventionally, this type of beverage dispenser includes a water tank for storing cooling water in the main body, and supplies liquid refrigerant to a cooler (cooling pipe) that constitutes a cooling device in the water tank, thereby cooling water in the water tank. The cooling water around the cooler is frozen to form an ice layer. And in this water tank, the cooling coil which is immersed in the cooling water of the said water tank, and a drink passes through the inside is provided, The drink which passes the said cooling coil is the ice formed by the cooler and the said cooler. It cools to predetermined temperature based on heat exchange with the cooling water cooled by the cooling effect | action based on melt | dissolution of a bank.

  The water tank is provided with a stirrer driven by a stirrer motor. By driving the stirrer, the cooling water is stirred to generate a water flow of the cooling water in the water tank. The temperature distribution of the cooling water is made uniform by the water flow generated based on the stirring (see Patent Document 1).

  Since the cooling water stored in the water tank is only used for cooling, it is not taken out with the sale of beverages. Therefore, in order to suppress the generation of scale and mold by storing the same water in the aquarium for a long period of time, a maintenance operation for replacing the cooling water in the aquarium is performed every predetermined period.

  Here, the configuration of a conventional water tank will be described with reference to FIG. FIG. 6 is a schematic explanatory view showing the configuration of a conventional water tank 100. As described above, the water tank 100 is provided with the stirrer 103 connected to the stirring motor 101 via the stirring shaft 102, and the cooling water in the water tank 100 is cooled in the chamber (not shown) on the stirring shaft 102. A pump 104 is provided for transporting to the cooler of the warehouse. A float switch 105 for detecting the water level is provided in the upper part of the water tank 100. The float switch 105 has a shaft 108 provided with a high water level switch 106 and a low water level switch 107 at a predetermined height, and is movable up and down between the high water level switch 106 and the low water level switch 107 with respect to the shaft 108. And a floating body 109 provided. The water tank 100 is provided with an overflow pipe 110 that is positioned slightly above the high water level switch 105 of the float switch 105.

  In addition, a drain pipe 111 for draining the cooling water in the water tank 100 is connected to the lower surface of the water tank 100, and a drain electromagnetic valve 112 is interposed in the drain pipe 111. And while being connected to water pipes, such as city water, cooling water is supplied to the water tank 100 from the tap water supply piping 113 in which the water inlet solenoid valve 114 and the tap water supply solenoid valve 115 were interposed.

  With this configuration, when the cooling water is stored in the water tank 100, the drain electromagnetic valve 112 is closed, the water inlet electromagnetic valve 114 and the tap water replenishing electromagnetic valve 115 are opened, and the tap water is stored in the water tank 100. . When the floating body 109 of the float switch 105 turns on the high water level switch 106, the water inlet solenoid valve 114 and the tap water replenishment solenoid valve 115 are closed, and the supply of tap water to the water tank 100 is stopped. And the cooling water in the water tank 100 is cooled by the cooling action by the cooler, and an ice bank is formed around the cooler. When the cooling water in the water tank 100 decreases due to evaporation or the like, and the floating body 109 of the float switch 105 turns on the low water level switch 107, the water inlet solenoid valve 114 and the tap water replenishment solenoid valve 115 are turned on again. Open and replenishment operation is performed.

On the other hand, when the replacement operation of the cooling water in the water tank 100 is performed, the drain electromagnetic valve 112 is opened with the water inlet electromagnetic valve 114 and the tap water replenishing electromagnetic valve 115 closed, and the cooling water in the water tank 100 is opened. Drain all. Thereafter, after a predetermined time has elapsed since the low water level switch 106 of the float switch 105 was turned on, it is considered that all the cooling water in the water tank 100 has been drained, the drain solenoid valve 112 is closed, and then the water inlet solenoid valve 114 again. Then, the tap water replenishing solenoid valve 115 is opened, and the cooling water storage operation is executed.
JP 2001-82848 A

  However, in the conventional beverage dispenser as described above, even when draining the cooling water in the water tank 100, since there is no special means for controlling the operation of the stirring motor 101, as long as the power source is connected. The stirring motor 101 is continuously driven, and the stirrer 103 rotates. Therefore, when the drain electromagnetic valve 112 is opened, the water level of the cooling water in the water tank 100 is lowered, and when the stirrer 103 comes out of the water from the submerged state, the stirrer 103 rotates on the water surface, There was an inconvenience that water splashed around. Therefore, there is a problem that the cooling water scattered around adheres to equipment near the water tank 100 and generates mold. Since the beverage dispenser is provided for providing beverages, there is a problem that mold is not generated in the device itself even if the beverage dispenser does not directly come into contact with the beverage raw material.

  Therefore, the present invention has been made to solve the conventional technical problems, and by controlling the operation of the stirrer provided in the water tank, the inconvenience that the cooling water in the water tank is scattered to the equipment around the water tank. A beverage dispenser that can avoid the above is provided.

  The beverage dispenser of the present invention stirs a water tank for storing cooling water, a water tank cooler for cooling the cooling water in the water tank, a cooling coil immersed in the cooling water in the water tank, and the cooling water in the water tank. A diluting water passing through the cooling coil is cooled and discharged by the cooling water, and includes a water level detecting means for detecting the water level in the water tank and a control means for controlling the operation of the agitator. The control means stops the stirrer when the water level detection means detects a predetermined low water level of the cooling water in the water tank.

  According to a second aspect of the present invention, the beverage dispenser is driven by the cooler that cools the beverage ingredients diluted with the dilution water, the cooler disposed in the cooler, and the power of the stirrer. And a pump that circulates the cooling water in the water tank to the cooler in the cabinet and a blower that circulates the cold air heat-exchanged with the cooler into the cooler, and the control means turns the blower off when the agitator is stopped. It is characterized by being stopped.

  According to the present invention, a water tank for storing cooling water, a water tank cooler for cooling the cooling water in the water tank, a cooling coil immersed in the cooling water in the water tank, and stirring for stirring the cooling water in the water tank A beverage dispenser that cools and discharges the dilution water passing through the cooling coil with cooling water, and includes a water level detection means for detecting the water level in the aquarium, and a control means for controlling the operation of the agitator. When the water level detection means detects a predetermined low water level of the cooling water in the water tank, the control means stops the stirrer, so when draining the cooling water in the water tank when performing maintenance work in the water tank, etc. In addition, it is possible to avoid the disadvantage that the cooling water scatters to the surroundings because the stirrer that has been operated comes out on the surface of the cooling water in the water tank.

  Thereby, it becomes possible to suppress the inconvenience that mold | fungi etc. generate | occur | produce in the components around the said water tank by the cooling water scattered around the water tank.

  According to invention of Claim 2, in the said invention, it is driven by the cooler which cools the beverage raw material diluted with dilution water, the cooler in a store | warehouse | chamber arrange | positioned in this cooler, and the power of a stirrer It has a pump that circulates the cooling water in the water tank to the cooler in the cabinet, and a blower that circulates the cool air heat-exchanged with the cooler into the cooler, and the control means stops the blower when the agitator is stopped. Therefore, the inconvenience that the blower is operated can be avoided until the cooling water in the water tank is not circulated to the internal cooler by stopping the agitator and simultaneously stopping the pump. Thereby, it is possible to avoid power consumption more than necessary, and energy saving can be realized.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a front view of a beverage dispenser 1 using the present invention, FIG. 2 is a front view of a beverage dispenser 1 with a door 28 opened, FIG. 3 is a side view of the beverage dispenser 1 seen through, and FIG. 4 is a beverage. The schematic block diagram of the dispenser 1 is shown.

  The beverage dispenser 1 of the present embodiment is a beverage dispenser used in restaurants, coffee shops, and the like, and supplies a BIB unit 5 that supplies neutral beverages such as oolong tea and orange juice, and also supplies a strong and non-carbonated target beverage. It is a device that has the tank unit 4 together. The beverage dispenser 1 has a structure in which a BIB unit 5 is disposed in a main body 2 and a tank unit 4 is connected to the outside of the main body.

  In the BIB unit 5, a BIB 5 </ b> A filled with syrup as a beverage ingredient is accommodated in a refrigerator 34 formed on the upper part of the main body 2. This cooler 34 is configured by a heat insulating box having an opening on the front surface, and inside the cooler 35 and cool air exchanged with the cooler 35 is circulated in the cooler 34. And an internal fan 36 for the purpose. The internal blower 36 is operation-controlled by the control unit 11 described later in detail.

  The internal cooler 35 is provided with a cooling water circulation pipe 37 made of a heat conductive material. In the cooling water circulation pipe 37, cooling water in a water tank 29 is circulated by a pump 66 as will be described in detail later. Let Thereby, the cooling water is circulated through the cooling water circulation pipe 37 of the internal cooler 35, whereby the inside of the cooling chamber 35 is cooled to a predetermined temperature.

  The front surface of the main body 2 and the front opening of the cooler 35 are concealed by an openable / closable door 28 located on the front surface of the main body 2. Details of the tank unit 4 will be described later.

  An operation unit 27 for operating the beverage supply from the tank unit 4 and the BIB unit 5 is provided on the front surface of the opening / closing door 28, and a beverage supply amount or a beverage supply method is selected for each beverage supplied from each unit. For example, button S, button M, button L, button C / P, and the like are provided. The buttons S, M, and L are buttons for operating the supply of a predetermined amount of beverage, and the button C / P is a button for supplying a beverage only while operating the button.

  A multi-nozzle 12 for discharging each beverage from the tank unit 4 is provided at the lower rear of the open / close door 28, and a table 14 is provided below the nozzle 12, and a cup is placed on the table 14. Can be arranged.

  On the other hand, the beverage ingredients supplied by the tank unit 4 are those contained in a container in which syrup as a beverage ingredient is sealed, for example, syrup (beverage ingredient) contained in the tank 3 and dilution water. At this time, when cooling water is used as dilution water, a non-carbonated beverage is supplied, and when carbonated water is used, a strong and weak carbonated beverage is supplied. As shown in FIG. 4, the tank unit 4 includes a syrup supply line 6 for supplying syrup from the tank 3, a syrup cooling pipe (beverage cooling pipe) 7, a flow rate regulator 8 driven by a drive motor 10, and a syrup electromagnetic A valve 9 is provided. The multi-nozzle 12 is connected to the end of the syrup supply line 6 together with other supply lines, that is, the cooling water supply line 24 and the carbonated water supply line 46. This multi nozzle 12 mixes syrup, dilution water, or carbonated water, and discharges it to the cup 50 as a target drink.

  The tank 3 is connected to a carbon dioxide gas cylinder 20 via a gas supply line 16 in which a gas regulator 15 is interposed. Thereby, since the gas regulator 15 as a pressure reducing valve is always opened, the carbon dioxide gas cylinder 20 at a predetermined pressure is opened by opening the syrup solenoid valve 9 located on the downstream side of the syrup supply line 6. Gas is supplied and the syrup is delivered to the syrup supply line 6.

  The syrup cooling pipe 7 is a cooling coil formed in a coil shape, and cools the syrup flowing in the pipe 7 by being immersed in a water tank 29 for storing the cooling water cooled by the cooling device R. It is. The details of the cooling device R will be described later.

  The flow rate regulator 8 continuously feeds a fixed volume of syrup to the syrup supply line 6 by a pair of rotors 32 and 32 housed therein. The drive motor 10 is connected to the shaft of one rotor 32, and a magnet encoder 33 that generates a pulse having a frequency corresponding to the rotational speed of the motor 10 is attached to the motor 10.

  Thereby, the energization to the rotor drive motor 10 of the syrup solenoid valve 9 and the flow regulator 8 is controlled by the control unit 11 which will be described later, so that the multi-nozzle connected from the tank 3 to the end of the syrup supply line 6. 12 to control the supply of syrup.

  On the other hand, a cooling water supply pipe 17 for supplying tap water such as city water as dilution water is disposed in the main body 2. A water inlet solenoid valve 18 is connected to the cooling water supply pipe 17. A water pump 19, a dilution water cooling pipe (beverage cooling pipe) 21, and a dilution water flow meter 22 are connected to the cooling water supply pipe 17 through a branch pipe. Are sequentially connected to the dilution water supply line 24, and the other is connected to a cooling water supply pipe 52 for supplying tap water to the water tank 29. A valve 53 is interposed. The dilution water cooling pipe 21 is a cooling coil formed in a coil shape like the syrup cooling pipe 7, and the details are provided in a water tank 29 cooled by a cooling device R described later, The dilution water flowing through the dilution water cooling pipe 21 is cooled.

  The dilution water flow meter 22 outputs a flow rate signal corresponding to the flow rate of the inflowing dilution water to the control unit 11. Further, the dilution water supply line 24 is provided with a dilution water electromagnetic valve 25, whereby opening / closing control of the dilution water supply line 24 is performed. The dilution water supply line 24 is also connected to the multi-nozzle 12 in the same manner as the syrup supply line 6. As a result, the dilution water electromagnetic valve 25 is controlled by the control unit 11 to control the supply of the dilution water sent to the multi-nozzle 12.

  The dilution water supply line 24 is connected to a water branch line 38 interposed between the dilution water flow meter 22 and the dilution water electromagnetic valve 25 and having an electromagnetic valve 39 interposed therebetween. The water branch line 38 is connected to a carbonator 40 for producing carbonated water, and a gas supply line 42 having one end connected to the carbon dioxide gas cylinder 20 is connected to the carbonator 40. A gas regulator 41 is interposed in the gas supply line 42. Thus, the dilution water is supplied to the carbonator 40 via the water branch line 38 and the carbon dioxide gas is supplied via the gas supply line 42. By mixing these dilution water and carbon dioxide, the carbonate water Is generated.

  The carbonater 40 is connected to a carbonated water flow meter 43, a carbonated water cooling pipe (beverage cooling pipe) 44, and a carbonated water supply line 46 provided with a carbonated water electromagnetic valve 45. The end of the supply line 46 is connected to the multi-nozzle 12.

  The carbonated water flow meter 43 outputs a flow rate signal corresponding to the flow rate of the infused carbonated water to the control unit 11. The carbonated water cooling pipe 44 is a cooling coil formed in a coil shape like the syrup cooling pipe 7, and the details are provided in a water tank 29 cooled by a cooling device R described later, The carbonated water flowing through the carbonated water cooling pipe 44 is cooled. Further, the carbonated water supply line 46 is controlled to open and close by a carbonated water electromagnetic valve 45 interposed in the carbonated water supply line 46. Since the carbonated water supply line 46 is also connected to the multi-nozzle 12 like the syrup supply line 6, the carbonated water electromagnetic valve 45 is controlled by the control unit 11, so The supply of carbonated water to be delivered is controlled.

  With the above configuration, the beverage supply operation of the beverage dispenser 1 will be described. The carbonator 40 is supplied with the carbon dioxide gas in the carbon dioxide cylinder 20 from the gas supply line 42 in advance and the dilution water from the water branch line 38 via the dilution water supply line 24. It is assumed that carbonated water having a carbonic acid concentration is manufactured and stored, and is in a standby state for sale.

  When any one of the operation buttons of the operation unit 27 is operated in the sales standby state, the beverage is supplied according to the button operation. Here, when the button of the non-carbonated beverage is operated, the control unit 11 opens the water inlet electromagnetic valve 18 and dilutes the tap water supplied from the city water by the water pump 19 with the dilution water cooling pipe 21 and It is made to flow into the dilution water supply line 24 in which the dilution water flowmeter 22 is interposed. In addition, the control unit 11 performs energization control on the rotor drive motor 10 that drives the syrup solenoid valve 9 and the flow rate regulator 8, so that the syrup supplied from the tank 3 is converted into the syrup cooling pipe 7 and the flow rate regulator 8. To the syrup supply line 6. Thereby, the target beverage is generated by diluting the syrup with dilution water at a predetermined ratio, and is supplied to the cup 50 from the multi-nozzle 12.

  When the carbonated beverage button is operated, the control unit 11 controls the carbonated water electromagnetic valve 45 to open and close, thereby discharging a predetermined amount of carbonated water from the carbonator 40 to the multi nozzle 12. Also in this case, a predetermined amount of syrup is supplied to the syrup supply line 6 in the same manner as described above, so that the target beverage is generated by diluting the syrup with carbonated water at a predetermined ratio. To be supplied.

  Next, the structure of the water tank 29 and the cooling device R will be described with reference to FIG. The water tank 29 is opened upward, the cooling water is stored inside, and the periphery thereof is a heat insulating wall, which is insulated from the outside. A cooling device R including a compressor 51, a radiator 54, and a blower 55 for air-cooling the radiator 54 is disposed below the water tank 29.

  The cooling device R is connected to a compressor 51, a radiator 52, a capillary tube 57 as a decompression means, and an evaporation pipe 30 as a water tank cooler in order through a refrigerant pipe 56, so that an annular refrigeration is provided. Constitutes a cycle.

  The evaporation pipe 30 that constitutes the refrigeration cycle of the cooling device R together with the compressor 51 and the radiator 54 is inserted into the water tank 29 in a coil shape, and is immersed in the cooling water in the water tank 29 to cool it. On the other hand, coiled beverage cooling pipes 7, 21, 44 are inserted into the water tank 29 from above and are immersed in the cooling water.

  Further, an ice sensor (not shown) is provided inside the evaporation pipe 30. This ice sensor is composed of two electrodes, and detects an ice layer around the evaporation pipe 30 from a change in resistance value between both electrodes. That is, the resistance value is low when the water is between the electrodes, and the resistance value is high in the case of ice.

  A stirrer 64 is attached in the water tank 29. The stirrer 64 is connected to a stirrer motor 68 via a stirrer shaft 65 and is rotationally driven by the stirrer motor 68 to generate a flow of cooling water in the water tank 29. The temperature distribution of the cooling water is made uniform by the water flow generated based on the stirring.

  On the other hand, a rotary shaft 65 to which the stirrer 64 is attached is provided with a pump 66 positioned above the stirrer 64. As described above, the pump 66 is connected to one end of the cooling water circulation pipe 37 constituting the internal cooler 35 provided in the cooler 35 for cooling the BIB 5A. The other end of the cooling water circulation pipe 37 after passing through the internal cooler 35 is located above the water tank 29 and is open. Since the pump 66 is provided on the same rotating shaft 65 as the stirrer 64, the pump 66 is driven in synchronization with the stirrer 64 by driving a stirrer motor 68 that drives the stirrer 64.

  With this configuration, when the agitation motor 68 is driven by the control unit 11, the agitator 64 is driven to rotate, and at the same time, the pump 66 is driven, and the cooling water in the water tank 29 is circulated through the cooling water circulation pipe 37. Thus, the internal cooler 35 exhibits a cooling action. Further, when the internal blower 36 is operated by the control unit 11, the cold air exchanged with the internal cooler 35 is circulated in the cooler 34, and the inside of the cooler 34 is cooled to a predetermined temperature. The cooling water sent to the internal cooler 35 by the pump 66 is returned to the water tank 29 by the other end of the cooling water circulation pipe 37.

  On the other hand, the cooling water supply pipe 52 as described above is connected to the water tank 29, and tap water such as city water is supplied. The cooling water supply pipe 52 is provided with an aquarium water replenishing electromagnetic valve 53, and the aquarium water replenishing electromagnetic valve 53 is controlled to be opened and closed by the control unit 11. A drain hole (not shown) is formed in the bottom wall of the water tank 29, and a drain pipe 71 having a drain electromagnetic valve 70 interposed is connected to the drain hole. One end of the drain pipe 71 is opened to the outside, and the control unit 11 performs opening / closing control of the drain electromagnetic valve 70 so that the cooling water in the water tank 29 can be drained to the outside. In addition, an overflow pipe 60 for preventing cooling water from overflowing from the upper surface opening is provided at the upper part of the water tank 29.

  A float switch (water level detection means) 72 for detecting the water level in the water tank 29 is provided in the upper part of the water tank 29. The float switch 72 includes a shaft 76 having an overflow switch 73, a water supply switch 74, and a stirrer stop switch 75, and a floating body 77 that is movable up and down with respect to the shaft 76. The

  The overflow switch 73 is a switch for detecting a predetermined overflow water level, that is, a water level located slightly below the height at which the overflow pipe 60 is provided, and is located above the water supply switch 74 and the agitator stop switch 75. To do. In FIG. 5, the overflow water level is indicated by a dotted line A. The water supply switch 74 is a switch for detecting the water supply water level located below the overflow water level by a predetermined water level, about 10 mm in this embodiment, and about 700 cc in capacity, and is lower than the stirrer stop switch 75. Located on the upper side. In FIG. 5, the water supply level is indicated by a dotted line B. The stirrer stop switch 75 is a switch for detecting a stirrer stop water level that is a predetermined low water level before the stirrer 64 is submerged in the cooling water before it comes out on the water surface. And substantially the same. In FIG. 5, the stirrer stop water level is indicated by a dotted line C.

  With the above configuration, the operation of the beverage dispenser 1 of the present invention will be described. In this embodiment, it is assumed that cooling water is stored in the water tank 29 in advance when the power is turned on. When the beverage dispenser 1 is installed and the power is turned on, the control unit 11 activates the compressor 51 of the cooling device R and starts operation. When the compressor 51 is started, the refrigerant that has flowed into the evaporation pipe 30 evaporates there, and the cooling water in the water tank 29 is cooled by the endothermic action that occurs at that time. As a result of this cooling, an ice layer is formed on the outer periphery of the evaporating pipe 30, and when the ice between the electrodes of the ice sensor becomes ice, the resistance value between the electrodes increases as described above, so the control unit 11 stops the compressor 51. Thereafter, when the ice between the electrodes melts, the resistance value between the electrodes becomes low as described above, and therefore the control unit 11 starts the compressor 51. By such control, an ice layer having a constant thickness is generated around the evaporation pipe 30, so that the beverage cooling pipes 7, 21 and 44 are cooled by the latent heat of the ice layer.

  In such a case, the cooling water is preliminarily placed in the water tank 29 with a predetermined level, that is, at least between the overflow water level and the feed water level in the water tank 29. The motor 68 is activated and the stirrer 64 is driven to rotate. Further, since the agitation shaft 65 provided with the agitator 64 is provided with a pump 66, the cooling water in the water tank 29 is circulated through the cooling water circulation pipe 37 by driving of the pump 66. The inner cooler 35 exhibits a cooling action. In addition, when the internal fan 36 is operated in synchronization with the agitation motor 68 by the control unit 11, the cool air exchanged with the internal cooler 35 is circulated in the cooler 34, and the inside of the cooler 34 is predetermined. Cooled to temperature.

  Here, when the water level in the water tank 29 decreases due to natural evaporation or the like, and the floating body 77 of the float switch 72 turns on the water supply switch 73 and detects the water supply water level, the controller 11 detects the water inlet solenoid valve 18. When the overflow water level is detected, that is, when the floating body 77 is turned on and the overflow switch 73 of the float switch 72 is turned ON by the rise of the coolant level. The water inlet solenoid valve 18 and the tank water replenishment solenoid valve 53 are closed. Thereby, a predetermined water level, that is, a water level between the overflow water level and the water supply water level is maintained in the water tank 29.

  On the other hand, the control part 11 performs the maintenance operation | movement which replaces the cooling water in the water tank 29 for every fixed time. In such a case, the control unit 11 opens the drain electromagnetic valve 70 with the water inlet solenoid valve 18 and the tap water replenishment solenoid valve 53 closed, and executes the drain operation of the cooling water in the water tank 29. In this case, the control unit 11 does not perform the water supply operation even when the floating body 77 of the flow switch 72 turns on the water supply switch 73 and detects the water supply level, and further the water level in the water tank 29 Is lowered and the floating body 77 of the flow switch 72 turns on the stirrer stop switch 75 and detects the stirrer stop water level, the operation of the stirrer motor 68 is stopped. In this case, the control unit 11 stops the operation of the internal fan 36 along with the stop of the stirring motor 68.

  Thereby, when the water level of the cooling water in the water tank 29 further decreases and the stirrer 64 comes out on the water surface from the submerged state, the stirrer 64 is not driven to rotate, so that it remains operated. Since the stirrer 64 comes out on the surface of the cooling water in the water tank 29, it is possible to avoid the disadvantage that the cooling water is scattered around.

  Therefore, it is possible to suppress inconvenience that mold or the like is generated in parts around the water tank 29 due to the cooling water scattered around the water tank 29. Accordingly, since the beverage dispenser 1 is provided for providing beverages, it is possible to avoid the disadvantage that mold occurs in the device itself even if the beverage dispenser 1 does not directly come into contact with the beverage raw material. Would be appropriate.

  In this case, the pump 66 that circulates the cooling water in the water tank 29 and cools the cooling chamber 34 is operated by the power of the stirrer 64, that is, by driving the stirring motor 68. When the stirring motor 68 is stopped, the pump 66 is also stopped. Therefore, even if the water level in the water tank 29 decreases and becomes lower than the installation height of the pump 66, the pump 66 is stopped, so that it is possible to avoid the inconvenience of the idling operation. Thereby, since the stirring motor 68 is not driven more than necessary, energy saving can be achieved and the running cost can be reduced.

  Further, in this case, the control unit 11 stops the operation of the internal fan 36 along with the stop of the stirring motor 68. For this reason, the agitator 64 is stopped, and at the same time, the pump 66 is stopped so that the cooling water in the water tank 29 is not circulated to the internal cooler 35. It can be avoided. Thereby, it is possible to avoid power consumption more than necessary, and energy saving can be realized.

  The control unit 11 determines that all the cooling water in the water tank 29 has been drained after a predetermined time has elapsed since the stirrer stop switch 75 of the float switch 72 was turned on, and after closing the drain electromagnetic valve 70. Then, the water inlet solenoid valve 18 and the tap water replenishment solenoid valve 53 are opened again, and the cooling water storage operation is executed. When the water level in the water tank 29 rises and the floating body 77 of the float switch 72 turns off the stirrer stop switch 75 and detects the stirrer stop water level, the control unit 11 again detects the stirrer motor 68 and the inside of the cabinet. The blower 36 is started.

  Thereby, when the stirrer 64 is rotationally driven, the water level in the water tank 29 can always be at least a stirrer stop water level, which is higher than the position where the pump 66 is provided in this embodiment. Therefore, it is possible to avoid the inconvenience that the cooling water is scattered around by rotating the stirrer 64 that is rotationally driven on the surface of the cooling water.

  In the present embodiment, the float switch 72 is used as a means for detecting the water level in the water tank 29, but the present invention is not limited to this, and the water level in the water tank 29 is determined in multiple stages. As long as the water level, the feed water level, and the stirrer stop water level can be detected, the same effect can be obtained even with other means.

  Moreover, although the present Example applied this invention about the drink supply apparatus which extracts various drinks, such as juice, this invention is effective not only to it but the drink supply apparatus which extracts cold water and beer.

It is a front view of the drink dispenser using this invention. It is a front view of the state which opened the door of the beverage dispenser. It is the side view which saw through the inside of a drink dispenser. It is a schematic block diagram of a drink dispenser. It is schematic structure explanatory drawing of a water tank. It is schematic structure explanatory drawing of the conventional water tank.

Explanation of symbols

R Cooling device 1 Beverage dispenser 7 Syrup cooling pipe (beverage cooling pipe)
11 Control Unit 17 Cooling Water Supply Pipe 18 Water Inlet Solenoid Valve 21 Dilution Water Cooling Pipe (Beverage Cooling Pipe)
29 Water tank 30 Evaporation pipe (water tank cooler)
34 Cooling chamber 35 Internal cooler 36 Internal fan 37 Cooling water circulation piping 44 Carbonated water cooling pipe (beverage cooling pipe)
51 Compressor 52 Cooling Water Supply Pipe 53 Tap Water Supply Solenoid Valve 60 Overflow Pipe 64 Stirrer 65 Stirrer Shaft 66 Pump 68 Stirrer Motor 70 Drainage Electromagnetic Valve 71 Drainage Pipe 72 Float Switch (Water Level Detection Means)
73 Overflow switch 74 Water supply switch 75 Agitator stop switch 76 Shaft 77 Floating body

Claims (2)

A water tank for storing cooling water, a water tank cooler for cooling the cooling water in the water tank, a cooling coil immersed in the cooling water in the water tank, and an agitator for stirring the cooling water in the water tank. In the beverage dispenser that cools and discharges the dilution water passing through the cooling coil with the cooling water,
Water level detection means for detecting the water level in the water tank, and control means for controlling the operation of the agitator,
The beverage dispenser characterized in that the control means stops the agitator when the water level detecting means detects a predetermined low water level of the cooling water in the water tank. A refrigerator that cools the beverage ingredients diluted with the dilution water, a refrigerator inside the refrigerator disposed in the refrigerator, and cooling the cooling water in the water tank driven by the power of the stirrer A pump that circulates in a cooler, and a blower that circulates the cool air heat-exchanged with the cooler into the cooler,
The beverage dispenser according to claim 1, wherein the control unit stops the blower when the stirrer is stopped.

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