Fluid supply system

Abstract

To provide a fluid supply system capable of operating a plurality of fluid stopper devices by one power source adapter.SOLUTION: The fluid supply system comprises: the one power source adapter connected to a power source; and a plurality of cut-off devices respectively installed in a plurality of channels, each having an actuator configured to cut off a fluid flow of a corresponding channel, which is driven when electric power is supplied from the power source via the power source adapter. The plurality of cut-off devices include a first cut-off device to which the electric power is supplied via the power source adapter, and a second cut-off device to which the electric power from the power source is supplied via the first cut-off device.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a fluid delivery system. [Background technology]

[0002] Patent Document 1 describes a fluid stopper device that uses an electric motor to block the flow of fluid inside a tube. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-256096 A Summary of the Invention [Problem to be solved by the invention]

[0004] When a plurality of the fluid stopper devices are provided and power is supplied to each of the plurality of fluid stopper devices separately, it is necessary to connect a power adapter to each of the fluid stopper devices one by one. As a result, at least the number of power adapters and power sources required for the fluid stopper devices is at least, which causes a problem of difficulty in securing power sources.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a fluid supply system capable of operating multiple fluid stopper devices with one power adapter. [Means for solving the problem]

[0006] One aspect of the present invention is One power adapter to be connected to a power source; a plurality of cutoff devices each having an actuator arranged in a plurality of flow paths and configured to be driven by power supplied from the power source via the power adapter to cut off the flow of fluid in the corresponding flow path; Equipped with The plurality of interrupting devices are a first cutoff device that is supplied with power via the power adapter; a second circuit breaker device to which power is supplied from the power source via the first circuit breaker device; A fluid delivery system is provided, comprising:

[0007] According to this configuration, since power is supplied to the second shutoff device via the first shutoff device, there is no need to use a separate power adapter to supply power to the second shutoff device, and as a result, both the first and second shutoff devices can be operated with a single power adapter. Effect of the Invention

[0008] According to the present invention, it is possible to provide a fluid supply system capable of operating a plurality of fluid cutoff devices with one power adapter. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram of a fluid supply system according to one embodiment of the present disclosure. [Diagram 2] FIG. 2 is a diagram for explaining the configuration and operation of the interrupter shown in FIG. [Diagram 3] FIG. 3 is a diagram for explaining the configuration and operation of the interrupter shown in FIG. [Figure 4] FIG. 4 is a control block diagram of the fluid supply system shown in FIG. [Diagram 5] FIG. 5 is a flowchart for explaining the cutoff control executed by the control unit shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, a fluid supply system according to an embodiment of the present disclosure will be described with reference to the accompanying drawings. Note that the following description is essentially merely illustrative and is not intended to limit the present disclosure, its applications, or its uses. In addition, the drawings are schematic, and the ratios of dimensions, etc. differ from the actual ones.

[0011] FIG. 1 is a schematic diagram of a fluid supply system 1 according to one embodiment of the present disclosure.

[0012] The fluid supply system 1 of this embodiment is a beverage supply system for supplying a sparkling beverage such as beer. The fluid supply system 1 of this embodiment is installed in, for example, a restaurant. The sparkling beverage of this embodiment is an example of a fluid according to the present disclosure.

[0013] The fluid supply system 1 includes three storage containers 10A to 10C, three flow paths 20A to 20C corresponding one-to-one to the storage containers 10A to 10C, and three dispensers 30A to 30C corresponding one-to-one to the flow paths 20A to 20C.

[0014] In the following description, when it is not necessary to particularly distinguish between the three storage containers 10A to 10C, one of the three storage containers 10A to 10C may be simply referred to as a storage container 10. Similarly, in the following description, when it is not necessary to particularly distinguish between the three flow paths 20A to 20C, one of the three flow paths 20A to 20C may be simply referred to as a flow path 20. Similarly, in the following description, when it is not necessary to particularly distinguish between the three dispensers 30A to 30C, one of the three dispensers 30A to 30C may be simply referred to as a dispenser 30.

[0015] The storage container 10 stores a beverage such as beer. A gas such as carbon dioxide is supplied into the storage container 10 from a gas source such as a gas cylinder (not shown). The beverage in the storage container 10 is pushed out of the storage container 10 by the pressure of the gas and supplied to a corresponding flow path 20.

[0016] The flow path 20 supplies the beverage supplied from the corresponding storage container 10 to the corresponding dispenser 30. One end of the flow path 20 is connected to the corresponding storage container 10, and the other end of the flow path 20 is connected to the corresponding dispenser 30. The flow path 20 in this embodiment is formed of a flexible tube.

[0017] The dispenser 30 is connected to a corresponding flow path 20. The dispenser 30 discharges the beverage supplied from the corresponding flow path 20 to the outside from a discharge port 31. A passage 32 is arranged in the dispenser 30 to guide the beverage to the discharge port 31 while cooling the beverage. The path length of the passage 32 is, for example, 13 m. The dispenser 30 of this embodiment is an example of a discharge device according to the present disclosure.

[0018] The fluid supply system 1 includes one power adapter 40 connected to a power source 2, and shutoff devices 50A-50C each having a one-to-one correspondence with the flow paths 20A-20C. In the following description, when there is no need to particularly distinguish between the shutoff devices 50A-50C, one of the shutoff devices 50A-50C may be simply referred to as the shutoff device 50.

[0019] The power adapter 40 is configured to be connected to the power source 2. One end of the power adapter 40 is connected to the power source 2. The other end of the power adapter 40 is connected to the circuit breaker 50A. The power adapter 40 extracts power from the power source 2 and supplies it to the circuit breaker 50A. The power adapter 40 of this embodiment extracts DC power from the power source 2, which is an AC power source, and supplies it to the circuit breaker 50A. In other words, the power adapter 40 of this embodiment is an AC-DC adapter. The rated voltage of the power adapter 40 of this embodiment is 12V, and the rated current is 2.0A.

[0020] The cutoff devices 50 cut off or open the corresponding flow paths 20. The cutoff devices 50A to 50C are cascaded in multiple stages in an electric system connected to a power source 2.

[0021] The circuit breaker 50A is connected to the power source 2 via the power adapter 40. As a result, power is directly supplied to the circuit breaker 50A from the power source 2 via the power adapter 40. "Power is directly supplied to the circuit breaker 50A from the power source 2 via the power adapter 40" means that no other circuit breaker 50 is disposed between the power source 2 and the circuit breaker 50A. The circuit breaker 50A of this embodiment is an example of a first circuit breaker according to the present disclosure.

[0022] The interrupting device 50B is connected to the interrupting device 50A via an electric wiring 41. As a result, power is indirectly supplied to the interrupting device 50B from the power source 2 via the power adapter 40 and the interrupting device 50A. The interrupting device 50B of the present embodiment is an example of a second interrupting device according to the present disclosure.

[0023] The circuit breaker 50C is connected to the circuit breaker 50B via an electrical wiring 42. As a result, power is indirectly supplied to the circuit breaker 50C from the power source 2 via the power adapter 40, the circuit breaker 50A, and the circuit breaker 50B. The circuit breaker 50C of the present embodiment is an example of a second circuit breaker according to the present disclosure.

[0024] 2 and 3 are diagrams for explaining the configuration and operation of the interrupting device 50. With reference to Fig. 2 and Fig. 3, the interrupting device 50 includes a tube 51, a support part 52, a movable part 53, an electric motor 54, and a detector 55.

[0025] The tube 51 in this embodiment is a flexible tube having translucency. The tube 51 constitutes a part of the corresponding flow path 20. The tube 51 is bent to have a loop shape inside the cutoff device 50. One end 51a of the tube 51 is connected to the corresponding flow path 20 on the storage container 10 (shown in FIG. 1) side from the cutoff device 50, i.e., the upstream side, via a connection part 56A. The other end 51b of the tube 51 is connected to the corresponding flow path 20 on the dispenser 30 (shown in FIG. 1) side from the cutoff device 50, i.e., the downstream side, via a connection part 56B.

[0026] The support portion 52 supports the tube 51 so that the tube 51 maintains the loop shape.

[0027] Movable part 53 is disposed so as to face support part 52 across the loop-shaped part of tube 51. Movable part 53 is movable between a first position (shown in FIG. 2) and a second position (shown in FIG. 3) where it moves from the first position so as to approach support part 52.

[0028] 2, when the movable part 53 is in the first position, the tube 51 maintains a loop shape. When the movable part 53 is in the first position, beverage can pass through the tube 51. In other words, when the movable part 53 is in the first position, the corresponding flow path 20 is open.

[0029] 3, when the movable part 53 is in the second position, a bent part 51c is formed in the tube 51. The flow of the beverage in the tube 51 is obstructed at the bent part 51c. As a result, when the movable part 53 is in the second position, the beverage cannot pass through the tube 51. In other words, when the movable part 53 is in the second position, the corresponding flow path 20 is blocked.

[0030] The electric motor 54 is driven by receiving a supply of electric power to move the movable part 53 from the first position to the second position. When the electric motor 54 moves the movable part 53 from the first position to the second position, the flow of beverage in the corresponding flow path 20 is interrupted. The rated current of the electric motor 54 in this embodiment is 1.7A.

[0031] In the following description, the electric motor 54 of the breaking device 50A may be referred to as an electric motor 54A, the electric motor 54 of the breaking device 50B may be referred to as an electric motor 54B, and the electric motor 54 of the breaking device 50C may be referred to as an electric motor 54C. The electric motors 54A to 54C of the present embodiment are examples of actuators according to the present disclosure.

[0032] The detector 55 detects abnormality in the supply of beverage in the corresponding flow path 20. In this embodiment, the detector 55 is disposed between the loop-shaped portion of the tube 51 and the connection portion 56A. Examples of abnormality in the supply of beverage include a shortage of liquid in the corresponding flow path 20 and the inclusion of foreign matter in the beverage in the corresponding flow path 20. In this embodiment, the detector 55 is configured to detect a shortage of liquid in the corresponding flow path 20.

[0033] The detector 55 in this embodiment is a photoelectric sensor having a light emitter and a light receiver (not shown). When a liquid shortage occurs in the corresponding flow path 20, pressurized gas is supplied to the corresponding flow path 20 from the corresponding storage container 10, and air bubbles are generated. The detector 55 detects a change in the amount of light received by the light receiver caused by air bubbles generated in the corresponding flow path 20, thereby detecting the liquid shortage in the corresponding flow path 20.

[0034] In the following description, the detector 55 of the circuit breaker 50A may be referred to as detector 55A, the detector 55 of the circuit breaker 50B may be referred to as detector 55B, and the detector 55 of the circuit breaker 50C may be referred to as detector 55C.

[0035] FIG. 4 is a block diagram of the fluid supply system 1 according to the present embodiment.

[0036] 4, the cutoff devices 50A to 50C include control units 57A to 57C, respectively. The control units 57A to 57C cooperate with each other to control the drive timing of the electric motors 54A to 54C. The control units 57A to 57C constitute an example of a control device of the present disclosure.

[0037] In the following description, when there is no need to particularly distinguish between the control units 57A to 57C, one of the control units 57A to 57C may be simply referred to as the control unit 57.

[0038] The control unit 57 receives a signal indicating a supply abnormality in the corresponding flow path 20 from the corresponding detector 55, and outputs a drive signal for driving the corresponding electric motor 54 to the electric motor 54. The control unit 57 has a processor for performing calculations, a storage unit for storing a program or data required for driving the electric motor 54, a transmission / reception unit for transmitting and receiving data to and from an external device (for example, a transmission / reception unit of another control unit 57), and a clock unit for measuring time. The processor includes a CPU, an MPU, a GPU, a DSP, an FPGA, an ASIC, etc. The storage unit is composed of, for example, an internal recording medium or an external recording medium. The internal recording medium includes a non-volatile memory, etc. The external recording medium includes a hard disk (HDD), a solid state drive (SSD), an optical disk device, etc. The transmission / reception unit is composed of a communication circuit or a communication module for transmitting and receiving data. The clock unit measures the elapsed time from a certain point in time in response to a command from the processor.

[0039] The control units 57A to 57C are capable of communicating with each other. Specifically, in the fluid supplying system 1 of this embodiment, the communication method for connecting the control units 57A to 57C is a Controller Area Network (CAN) communication method.

[0040] The dashed and dotted lines in Fig. 4 indicate the flow of power supplied from the power source 2 to the fluid supply system 1. As shown in Fig. 4, the electric motor 54A is supplied with power from the power source 2 via the power adapter 40. The electric motor 54B is supplied with power from the power source 2 via the electric motor 54A. The electric motor 54C is supplied with power from the power source 2 via the electric motors 54A and 54B.

[0041] <Shutoff control> The cutoff control executed by the control units 57A to 57C will be described below with reference to Fig. 5. Fig. 5 is a flowchart for explaining the cutoff control executed by the control units 57A to 57C.

[0042] The cutoff control in this embodiment is started when any of the detectors 55A to 55C detects a supply abnormality in the corresponding flow path 20. In the following description, as an example, a case where the detector 55A detects a supply abnormality in the flow path 20A will be described.

[0043] In step S1, a signal indicating the supply abnormality in the flow path 20A is output from the control unit 57A corresponding to the flow path 20A in which the supply abnormality has been detected to the other two control units 57B and 57C. The signal indicating the supply abnormality includes information regarding the time when the corresponding detector 55 detected the supply abnormality.

[0044] In step S2, it is determined whether or not a supply abnormality has been detected in the other two flow paths 20B, 20C within a predetermined first time T1 after a supply abnormality has been detected in flow path 20A. Specifically, control units 57A-57C cooperate to determine whether or not a supply abnormality has been detected in the other two flow paths 20B, 20C within a predetermined first time T1 after a supply abnormality has been detected in flow path 20A.

[0045] In this embodiment, the predetermined first time is 100 msec. The predetermined first time in this embodiment is set to be equal to or shorter than the time from when the electric motor 54 is driven until the current flowing through the power adapter 40 transitions to a steady state. In addition, the predetermined first time T1 may be set to a different time for each electric motor 54 depending on the characteristics of the electric motor 54 corresponding to the flow path 20 in which the supply abnormality has been detected.

[0046] If it is determined in step S2 that a supply abnormality has been detected in one or both of the other two flow paths 20B, 20C within a predetermined first time T1 after the supply abnormality has been detected in flow path 20A, the process proceeds to step S3. In the following description of steps S3 and S4, as an example, a case will be described in which it is determined in step S2 that a supply abnormality has been detected in flow path 20B and that no supply abnormality has been detected in flow path 20C.

[0047] In step S3, one of the electric motors 54A, 54B corresponding to the flow passage 20A, 20B in which the supply abnormality has been detected is driven, and the corresponding flow passage 20 is blocked.

[0048] In step S4, after a predetermined second time T2 has elapsed since one of the electric motors 54A, 54B corresponding to the flow paths 20A, 20B in which the supply abnormality was detected was driven, the other of the electric motors 54A, 54B is driven to cut off the corresponding flow path 20. Thereafter, the cutoff control by the control units 57A to 57C ends.

[0049] The second time T2 is set to be longer than the time required for the current flowing through the power adapter 40 to transition to a steady state after one of the electric motors 54A and 54B is driven. The second time T2 is also set to be shorter than the time required for the current flowing through the power adapter 40 to transition to a steady state after one of the electric motors 54A and 54B is driven and the other of the electric motors 54A and 54B to be discharged. In other words, the second time T2 is selected within a range having a lower limit of the time required for the current flowing through the power adapter 40 to transition to a steady state after one of the electric motors 54A and 54B is driven and an upper limit of the time required for the current flowing through the power adapter 40 to transition to a steady state after one of the electric motors 54A and 54B is driven and the other of the electric motors 54A and 54B to be discharged. The second time T2 in this embodiment is 100 msec.

[0050] In steps S3 and S4, the order in which the electric motors 54A and 54B are driven may be determined based on a preset priority order. Also, the order in which the electric motors 54A and 54B are driven in steps S3 and S4 may be determined based on the order in which the corresponding detectors 55A and 55B detect supply abnormalities in the corresponding flow paths 20A and 20B.

[0051] In step S2, if it is determined that no supply abnormality is detected in either of the other two flow paths 20B, 20C within the predetermined first time T1 after the supply abnormality is detected in flow path 20A, the process proceeds to step S5. In step S5, the electric motor 54A corresponding to the flow path 20A in which the supply abnormality is detected is driven to cut off the flow path 20A. Thereafter, the cutoff control by the control units 57A to 57C ends.

[0052] In the above description, as an example, a case where a supply abnormality is detected in the flow paths 20A and 20B within the predetermined first time T1 has been described, but the present invention is not limited to this. The above-described control is also applied to a case where a supply abnormality is detected in the flow paths 20B and 20C within the predetermined first time T1, and is also applied to a case where a supply abnormality is detected in the flow paths 20A and 20C within the predetermined first time T1. The above-described control is also applied to a case where a supply abnormality is detected in all of the flow paths 20A to 20C within the predetermined first time T1. In this case, the control units 57A to 57C cooperate with each other to control the drive timings of the electric motors 54A to 54C so that the electric motors 54A to 54C are operated with a delay of the predetermined second time T2.

[0053] [effect] The fluid supply system 1 of the present embodiment provides the following advantages.

[0054] Because power is supplied to the circuit breaker devices 50B and 50C via the circuit breaker device 50A, there is no need to use a separate power adapter to supply power to the circuit breaker devices 50B and 50C. As a result, all of the circuit breaker devices 50A to 50C can be operated using only one power adapter 40.

[0055] In this embodiment, the control units 57A to 57C cooperate with each other to control the drive timing of the electric motors 54 of the two circuit breakers 50 so that, when the detectors 55 of the two circuit breakers 50 among the circuit breakers 50A to 50C detect a supply abnormality within a predetermined first time T1, one of the two circuit breakers 50 is driven and then the other of the two circuit breakers 50 is driven with a delay. With this configuration, the drive timing of the electric motors 54 of the two circuit breakers 50 is shifted, so that the timing at which the starting current is generated by the electric motors 54 of the two circuit breakers 50 can be shifted. This makes it possible to suppress excessive current from flowing through the power adapter 40. As a result, even when power is supplied to a plurality of circuit breakers 50 using one power adapter 40, it is possible to suppress excessive current from flowing through the power adapter 40, so there is no need to increase the capacity of the power adapter 40.

[0056] In this embodiment, the second time T2 from when one of the two circuit breaker devices 50 is driven to when the other of the two circuit breaker devices 50 is driven is longer than the time from when one of the two circuit breaker devices 50 is driven to when the current flowing through the power adapter 40 transitions to a steady state. With this configuration, when the other of the two circuit breaker devices 50 is driven, the current flowing through the power adapter 40 is in a steady state, so that excessive current can be prevented from flowing through the power adapter 40. As a result, even when one power adapter 40 is used to supply power to a plurality of circuit breaker devices 50, it is possible to prevent excessive current from flowing through the power adapter 40, so that there is no need to increase the capacity of the power adapter 40.

[0057] In this embodiment, the second time T2 from when one of the two shutoff devices 50 is driven to when the other of the two shutoff devices 50 is driven is shorter than the time required to discharge all of the fluid contained in the passage 32 in the dispenser 30 corresponding to the other of the two shutoff devices 50. With this configuration, even if the flow path 20 corresponding to the other of the two shutoff devices 50 runs out of liquid, the pressurized gas supplied from the corresponding storage container 10 to the flow path 20 can be prevented from spraying out from the discharge port 31 of the corresponding dispenser 30.

[0058] In this embodiment, the rated current of the power adapter 40 (2.0 A in this embodiment) is equal to or greater than the rated current of the electric motor 54 (1.7 A in this embodiment) and equal to or less than the sum of the rated currents of the two electric motors 54 (3.4 A in this embodiment). With this configuration, the flow paths 20A-20C can be cut off by the multiple cutoff devices 50A-50C using a small-capacity power adapter 40 that is capable of driving one electric motor 54 but cannot drive two electric motors 54 simultaneously.

[0059] (Modification) The fluid supply system according to the present disclosure is not limited to the configuration of the above embodiment, and various modifications are possible.

[0060] In the above embodiment, a sparkling beverage, which is a liquid, is described as an example of the fluid according to the present disclosure, but the fluid according to the present disclosure is not limited to a liquid. The fluid according to the present disclosure is not limited to a liquid, and may be a gas or a powder. The fluid supply system according to the present disclosure is not limited to the beverage supply system of the above embodiment.

[0061] In the above embodiment, the electric motor 54 has been described as an example of the actuator according to the present disclosure, but the actuator according to the present disclosure is not limited to the electric motor 54. The actuator according to the present disclosure may be any actuator that is supplied with electric power and driven by the supplied electric power.

[0062] In the above embodiment, three shutoff devices 50 are connected to a power supply system connected to the same power source 2, but the present invention is not limited to this, and two shutoff devices 50 may be connected to a power supply system connected to the same power source 2, or four or more shutoff devices 50 may be connected. Note that the fluid supply system of the present disclosure may be configured to limit the number of shutoff devices 50 that can be connected to a power supply system connected to the same power source 2.

[0063] In the above embodiment, the interrupting device 50C is connected to the interrupting device 50B by the electric wiring 42, but the interrupting device 50C may be connected to the interrupting device 50A by an electric wiring.

[0064] In the above embodiment, an example of the control device of the present disclosure is constituted by control units 57A to 57C, but the control device of the present disclosure may be constituted by one control unit 57 of the multiple circuit breakers 50, or may be provided separately from the control units 57 of the multiple circuit breakers 50.

[0065] In the embodiment, the fluid supply system 1 has three storage containers 10A to 10C, but may have only one storage container 10. In this case, a plurality of flow paths 20 may be connected to one storage container 10.

[0066] In the embodiment, the second time T2 from when one of the electric motors 54 is driven to when another of the electric motors 54 is driven is preset based on the time from when one of the electric motors 54 is driven to when the current flowing through the power adapter 40 transitions to a steady state, but is not limited thereto. For example, the fluid supply system according to the present disclosure may include a monitoring device that monitors the current flowing through the power adapter 40, and the control device according to the present disclosure may control the drive timing of each electric motor 54 so that the other of the electric motors 54 is driven when the monitoring device determines that the current flowing through the power adapter 40 falls below a predetermined threshold after one of the electric motors 54 is driven.

[0067] In the embodiment, the second time T2 from when one of the electric motors 54 is driven to when the other of the electric motors 54 is driven is determined in advance based on the time required to discharge all the fluid in the dispenser 30 corresponding to the other of the electric motors 54, but is not limited thereto. For example, the fluid supply system according to the present disclosure may include a flow rate sensor that detects the flow rate of the passage 32 of the dispenser 30, and the control device according to the present disclosure may control the drive timing of each electric motor 54 so that the other of the electric motors 54 is driven when the integrated flow rate in the passage 32 of the dispenser 30 exceeds a predetermined threshold value after one of the electric motors 54 is driven. For example, the predetermined threshold value may be the volume of the passage 32 in the dispenser 30.

[0068] In the above embodiment, the cutoff device 50 cuts off the flow of fluid in the corresponding flow path 20 by creating a bent portion 51c in the flexible tube 51, but the cutoff mechanism of the cutoff device according to the present disclosure is not limited to this. For example, a pinch valve may be used to press the tube 51 to cut off the flow of the corresponding flow path 20.

[0069] In the above embodiment, the detector 55 is a photoelectric sensor, but the detector according to the present disclosure is not limited to this, and may be other types of sensors such as a near-infrared sensor, an ultrasonic sensor, and a capacitance sensor.

[0070] [Note] The fluid supply system according to the present disclosure provides the following aspects.

[0071] [Aspect 1] Aspect 1 of the present disclosure is One power adapter to be connected to a power source; a plurality of cutoff devices each having an actuator arranged in a plurality of flow paths and configured to be driven by power supplied from the power source via the power adapter to cut off the flow of fluid in the corresponding flow path; Equipped with The plurality of interrupting devices are a first cutoff device that is supplied with power via the power adapter; a second circuit breaker device to which power is supplied from the power source via the first circuit breaker device; A fluid delivery system is provided, comprising:

[0072] [Aspect 2] Aspect 2 of the present disclosure is a control device for controlling a drive timing of the actuator of each of the plurality of cutoff devices; Each of the cutoff devices includes a detector for detecting an abnormality in the supply of fluid in the flow path; The control device provides a fluid supply system as described in aspect 1, in which, when the detectors of two of the multiple shutoff devices detect a supply abnormality within a predetermined time, the control device controls the drive timing of each of the actuators of the two shutoff devices so that one of the two shutoff devices is driven after the other of the two shutoff devices is driven with a delay.

[0073] [Aspect 3] Aspect 3 of the present disclosure is The fluid supply system of aspect 2 is provided, wherein the time from when one of the power sources is driven to when the other of the power sources is driven is longer than the time from when one of the power sources is driven to when the current flowing through the power adapter transitions to a steady state.

[0074] [Aspect 4] Aspect 4 of the present disclosure is a plurality of discharge devices connected to the plurality of flow paths, respectively, for discharging fluids supplied from the corresponding flow paths; The fluid supply system according to aspect 2 or 3 is provided, wherein the time from when one is driven to when the other is driven is shorter than the time required to eject all of the fluid in the ejection device corresponding to the other.

[0075] [Aspect 5] Aspect 5 of the present disclosure is Provided is a fluid supply system according to any one of aspects 2 to 4, wherein the rated current of the power adapter is equal to or greater than the rated current of the actuator and equal to or less than the sum of the rated currents of two of the actuators. [Explanation of symbols]

[0076] 1 Fluid Supply System 2 power supply 10 Storage Containers 20 Flow Path 30 Dispenser (fluid ejection device) 31 Discharge port 32 Passage 40 Power Adapter 41 Electrical wiring 42 Electrical wiring 50 Circuit Breaker 51 Tube 52 Support part 53 Moving parts 54 Electric motor (actuator) 55 Detector 56 Connection 57 Control unit (control device)

Claims

1. a power adapter for connection to a power source; a plurality of cutoff devices each having an actuator arranged in a plurality of flow paths and configured to be driven by power supplied from the power source via the power adapter to cut off the flow of fluid in the corresponding flow path; Equipped with The plurality of interrupting devices are a first cutoff device that is supplied with power via the power adapter; a second cutoff device to which power is supplied from the power source via the first cutoff device; A fluid delivery system comprising:

2. a control device for controlling a drive timing of the actuator of each of the plurality of cutoff devices; Each of the cutoff devices includes a detector for detecting an abnormality in the supply of fluid in the corresponding flow path; The fluid supply system of claim 1, wherein the control device controls the drive timing of the actuators of each of the two shutoff devices so that, when the detectors of two of the plurality of shutoff devices detect a supply abnormality within a predetermined time, one of the two shutoff devices is driven and then the other of the two shutoff devices is driven with a delay.

3. The fluid supply system according to claim 2 , wherein the time from when the one is driven to when the other is driven is longer than the time from when the one is driven to when the current flowing through the power adapter transitions to a steady state.

4. a plurality of discharge devices connected to the plurality of flow paths, respectively, for discharging fluids supplied from the corresponding flow paths; The fluid supply system according to claim 2 , wherein a time period from when the one is driven to when the other is driven is shorter than a time period required to eject all of the fluid in the ejection device corresponding to the other.

5. 3. The fluid supply system of claim 2, wherein the rated current of the power adapter is equal to or greater than the rated current of the actuator and equal to or less than the sum of the rated currents of the two actuators.

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