CN114728778A

CN114728778A - Cleaning device for beverage supply system

Info

Publication number: CN114728778A
Application number: CN202080078849.4A
Authority: CN
Inventors: 吉原庆太
Original assignee: Suntory Holdings Ltd
Current assignee: Suntory Holdings Ltd
Priority date: 2019-12-26
Filing date: 2020-12-25
Publication date: 2022-07-08
Also published as: JP2021104810A; KR20220097526A; WO2021132671A1; JP7349905B2

Abstract

The cleaning device of the beverage supply system (1, 1') of the invention comprises: a distribution head (50) having a fluid outlet (52) and a fluid inlet (51); a gas supply path (60) connecting the gas supply source (10) and the fluid inlet; a gas opening/closing valve (61) for opening/closing the gas supply path; a water supply path (90) connecting a water supply source (100) and the fluid inlet; a water opening/closing valve (91) for opening/closing the water supply path; a pressure sensor (44) for detecting the pressure of the gas supply path on the downstream side of the gas on-off valve; and a control device (80) for controlling the gas on-off valve and the water on-off valve. The dispensing head is manually switched between a 1 st state and a 2 nd state, the 1 st state being a state in which the fluid inlet and the fluid outlet are communicated with each other through the inside of the beverage storage container, and the 2 nd state being a state in which the fluid inlet and the fluid outlet are directly communicated with each other. The control device detects an erroneous operation of a user of the beverage supply system based on an output of the pressure sensor.

Description

Cleaning device for beverage supply system

Technical Field

The present invention relates to a cleaning device for a beverage supply system.

Background

Conventionally, there has been known a beverage supply system for supplying a beverage delivered from a beverage container by gas from a beverage dispenser to the outside (for example, japanese patent application laid-open No. 2006-36221). A user of such a beverage supply system can easily obtain a desired amount of beverage by pouring the beverage from the beverage dispenser into a container (e.g., a glass).

However, after the beverage supply by the beverage supply system is completed, the beverage remains in the beverage flow path. The remaining beverage may cause deterioration of the beverage, propagation of microorganisms, and the like. Therefore, in order to prevent the taste of the beverage from being degraded, the beverage supply system is periodically cleaned.

Disclosure of Invention

However, when cleaning the beverage supply system, the user of the beverage supply system may perform operations different from the normal sequence and may not be able to properly clean the beverage supply system. For example, when the dispensing head described in japanese patent application laid-open No. 2006-36221 is used, if the cleaning is started in a state where the fluid inlet port of the dispensing head communicates with the inside of the beverage storage container by an erroneous operation of the user, the cleaning water is mixed into the beverage in the beverage storage container.

In addition, if the faucet is kept closed during washing in the beverage supply system due to an erroneous operation by the user, the flow of the washing water is shut off by the faucet, and the beverage remaining in the beverage flow path is not discharged.

The present invention has been made in view of the above problems, and an object of the present invention is to detect an erroneous operation of a user of a beverage supply system when the beverage supply system is cleaned.

The gist of the present invention is as follows.

(1) A cleaning device for a beverage supply system for supplying a beverage, which is delivered from a beverage storage container through a beverage delivery path, to the outside from a faucet of a beverage dispenser, comprising: a dispensing head attached to the beverage container and having a fluid outlet port and a fluid inlet port connected to the beverage transport path; the gas supply path is connected with a gas supply source and the fluid inlet; a gas opening/closing valve for opening/closing the gas supply path; a water supply path connecting a water supply source and the fluid inlet; a water opening/closing valve for opening/closing the water supply path; a pressure sensor that detects a pressure in the gas supply path on a downstream side of the gas on-off valve; and a control device that controls the gas on-off valve and the water on-off valve, wherein the dispensing head is manually switched between at least a 1 st state and a 2 nd state, the 1 st state being a state in which the fluid inlet and the fluid outlet are communicated with each other via an inside of the beverage storage container, and the 2 nd state being a state in which the fluid inlet and the fluid outlet are directly communicated with each other, and the control device detects an erroneous operation by a user of the beverage supply system based on an output of the pressure sensor.

(2) The cleaning device for a beverage supply system according to item (1), wherein when the user requests cleaning of the beverage supply system, the control device changes the gas on-off valve from an open valve state to a closed valve state, and determines that the faucet is in the closed state when a decrease amount of the pressure detected by the pressure sensor while the gas on-off valve remains in the closed valve state is equal to or less than a 1 st threshold value.

(3) The cleaning device for a beverage supply system according to item (2), wherein the control device determines that the dispensing head is in the 1 st state when a decrease amount of the pressure detected by the pressure sensor is greater than the 1 st threshold and equal to or less than a 2 nd threshold while the gas on-off valve is maintained in the valve-closed state.

(4) The cleaning device of the beverage supply system according to the above (2) or (3), wherein the control device maintains the water opening/closing valve in a closed state while the erroneous operation is detected.

(5) The cleaning device for a beverage supply system according to any one of items (1) to (4), wherein when cleaning of the beverage supply system is completed, the control device executes a water discharge control for closing the water open/close valve and opening the gas open/close valve for a predetermined time, closes the gas open/close valve after the execution of the water discharge control, and determines that the faucet is in the closed state when a decrease amount of the pressure detected by the pressure sensor when the gas open/close valve is closed is equal to or less than a 3 rd threshold value.

(6) The cleaning device for a beverage supply system according to any one of items 1 to 5, wherein the control device closes the water opening/closing valve and opens/closes the gas opening/closing valve after cleaning of the beverage supply system, and determines that the faucet is in the open state when a decrease amount of the pressure detected by the pressure sensor when the gas opening/closing valve is opened/closed is larger than a 4 th threshold value.

(7) The cleaning device for a beverage supply system according to any one of items 1 to 6, further comprising an alarm device for outputting an alarm, wherein the control device causes the alarm device to output the alarm when the erroneous operation is detected.

(8) The cleaning device for a beverage supply system according to item (5), further comprising an alarm device for outputting an alarm, wherein the control device causes the alarm device to output an end alarm sound when a decrease in the pressure detected by the pressure sensor when the gas on-off valve is closed is larger than the 3 rd threshold after the drainage control is executed.

(9) The cleaning device for a beverage supply system according to item (8), wherein the control device closes the water open/close valve and opens/closes the gas open/close valve after cleaning of the beverage supply system, and stops the emission of the end warning sound when a decrease amount of the pressure detected by the pressure sensor when the gas open/close valve is opened/closed is equal to or less than a 4 th threshold.

According to the present invention, it is possible to detect an erroneous operation by a user of the beverage supply system when cleaning the beverage supply system.

Drawings

Fig. 1 is a schematic diagram showing a configuration of a beverage supply system to which a cleaning device of a beverage supply system according to a first embodiment of the present invention is applied.

Fig. 2 is a schematic diagram showing the configuration of a cleaning apparatus according to a first embodiment of the present invention.

Fig. 3 is a schematic diagram showing a configuration of the control device of fig. 2.

Fig. 4 is a flowchart showing a control routine of the cleaning process in the first embodiment.

Fig. 5 is a flowchart showing a control routine of the cleaning process in the second embodiment.

Fig. 6 is a flowchart showing a control routine for ending the processing.

Fig. 7 is a schematic diagram showing the configuration of a beverage supply system to which a cleaning device of a beverage supply system according to a third embodiment of the present invention is applied.

Fig. 8 is a flowchart showing a control routine of the cleaning process in the third embodiment.

Fig. 9 is a flowchart showing a control routine of the Water jet control (Water shot control).

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same components are denoted by the same reference numerals.

First embodiment

First, a first embodiment of the present invention will be described with reference to fig. 1 to 4.

Beverage supply system

Fig. 1 is a schematic diagram showing a configuration of a beverage supply system 1 to which a cleaning device of a beverage supply system according to a first embodiment of the present invention is applied. The beverage supply system 1 includes an air supply source 10, a beverage storage container 20, a beverage dispenser 30, a dispensing head 50, an air supply path 60, and a beverage transfer path 70. The beverage supply system 1 supplies the beverage, which is transported from the beverage storage container 20 through the beverage transport path 70 by the gas supplied from the gas supply source 10, to the outside from the beverage dispenser 30. A user of the beverage supply system 1 (hereinafter simply referred to as "user") can easily obtain a desired amount of beverage by injecting the beverage from the beverage dispenser 30 into the container.

The air supply path 60 connects the air supply source 10 and the dispensing head 50. The gas supply path 60 is configured as, for example, a gas supply hose, and is formed of various materials (for example, Polyethylene (PE), polyvinylidene fluoride (PVDF), ethylene-tetrafluoroethylene copolymer (ETFE), Polytetrafluoroethylene (PTFE), or the like) that can withstand gas pressure.

The beverage delivery path 70 connects the dispensing head 50 and the beverage dispenser 30. The beverage delivery path 70 is configured as, for example, a beverage delivery hose, and is formed of various materials (for example, Polyethylene (PE), polyvinylidene fluoride (PVDF), ethylene-tetrafluoroethylene copolymer (ETFE), Polytetrafluoroethylene (PTFE), and the like) that can withstand the pressure of the beverage and gas.

Hereinafter, each component of the beverage supply system 1 will be described in detail.

The gas supply source 10 supplies a gas such as a carbonic acid gas (carbon dioxide gas), a nitrogen gas, or a compressed air. The gas supply source 10 includes a gas pressure reducing valve 11, and the pressure of the gas supplied from the gas supply source 10 is adjusted by the gas pressure reducing valve 11. The air supply source 10 is configured as a gas bomb, for example. The gas supply source 10 is connected to the gas supply path 60, and the gas supplied from the gas supply source 10 flows through the gas supply path 60 and is supplied to the beverage container 20.

The beverage container 20 contains a beverage. For example, the beverage container 20 contains a foamable beverage. The sparkling beverage includes beer, beer-taste alcoholic beverage, beer-taste beverage, carbonated distilled liquor, whisky beverage (whisky, high ball cocktail, etc.), carbonated fruit juice, etc. The beer-taste alcoholic beverages include sparkling liquor and sparkling alcoholic beverages (so-called third-class beers) produced from a raw material other than malt or having a beer taste obtained by mixing a sparkling liquor with a wheat-derived alcoholic beverage. The beer-taste beverage includes nonalcoholic beer and the like. The beverage storage container 20 is configured as a beverage can for storing a foamable beverage, for example.

The beverage container 20 may contain a non-foaming beverage. The non-foaming beverage includes coffee, wine, etc.

The beverage container 20 includes a well-known spear valve (not shown) that functions as a lid of the beverage container 20. The mole valve extends from the top of the beverage receiving container 20 to near the bottom of the beverage receiving container 20.

The dispensing head 50 is mounted to the beverage receiving container 20, specifically, to a spear valve of the beverage receiving container 20. The distribution head 50 has a fluid inlet 51 and a fluid outlet 52. The fluid inlet 51 is connected to the air supply path 60, and the air supply path 60 connects the air supply source 10 and the fluid inlet 51. The fluid outlet 52 is connected to the beverage delivery path 70, and the beverage delivery path 70 connects the fluid outlet 52 to the beverage dispenser 30. When gas is supplied into the beverage storage container 20 through the fluid inlet 51, the liquid surface of the beverage is pressed down by the gas. As a result, the beverage rises through the spear valve and is pushed out from the beverage storage container 20 to the beverage conveying path 70 through the fluid outflow port 52.

The beverage dispenser 30 supplies the beverage delivered from the beverage container 20 by the gas supplied from the gas supply source 10 to the outside (outside of the beverage dispenser 30). Fig. 1 shows the beverage dispenser 30 with the cover removed. The beverage dispenser 30 includes a coiled beverage introduction pipe 31, a water tap 32, a cooling water tank 33, and a cooling device 34.

One end of the beverage introduction pipe 31 is connected to the beverage transfer passage 70, and the other end of the beverage introduction pipe 31 is connected to the faucet 32. The beverage delivered from the beverage container 20 flows through the beverage introduction pipe 31 and reaches the faucet 32. At this time, when the user operates the handle 321 of the tap 32 (for example, pulls the handle 321 to the front), the tap 32 is opened and the beverage is poured from the tap 32 into a container (a beer mug, a glass, or the like) set by the user. Thus, the beverage supply system 1 supplies the beverage from the faucet 32 of the beverage dispenser 30 to the outside.

The user supplies water to the cooling water tank 33 in advance, and the cooling water tank 33 is filled with water. The cooling device 34 includes a refrigerator (not shown), a coiled cooling medium flow pipe 35, and a stirrer 36. The cooling device 34 forms ice around the refrigerant flow pipe 35 by the refrigerant supplied from the refrigerator to the refrigerant flow pipe 35, and cools the water in the cooling water tank 33 by the ice. The stirrer 36 stirs the water in the cooling water tank 33 so that the temperature of the water in the cooling water tank 33 becomes uniform. The beverage delivered to the beverage dispenser 30 is cooled by the cooling water in the cooling water tank 33 while passing through the beverage introduction pipe 31. Therefore, even if the beverage in the beverage storage container 20 is at the normal temperature, the beverage supply system 1 can supply the beverage cooled to a desired degree from the beverage dispenser 30 to the outside.

Cleaning device for beverage supply system

After the beverage supply by the beverage supply system 1 is completed, the beverage remains in the beverage flow path. The remaining beverage may cause deterioration of the beverage, proliferation of microorganisms, and the like. Therefore, in order to prevent the taste of the beverage from being degraded, the beverage supply system 1 needs to be periodically cleaned.

In the present embodiment, the beverage supply system 1 is cleaned by a cleaning device (hereinafter simply referred to as "cleaning device") of the beverage supply system 1. Specifically, the cleaning device cleans the dispensing head 50, the beverage transfer path 70, and the beverage dispenser 30 (the beverage introduction pipe 31 and the water tap 32), which are beverage flow paths of the beverage supply system 1.

Fig. 2 is a schematic diagram showing the configuration of a cleaning apparatus according to a first embodiment of the present invention. Fig. 2 shows the inside of the control box 40 of fig. 1. A part of the components of the beverage supply system 1 also functions as a component of the cleaning device.

The cleaning apparatus includes a control box 40, a distribution head 50, an air supply passage 60, and a water supply passage 90. A part of the air supply passage 60 and a part of the water supply passage 90 are disposed in the control box 40 and hidden from the outside by the control box 40.

The fluid inlet 51 of the distribution head 50 is connected to the water supply path 90, and the water supply path 90 connects the water supply source 100 for supplying water to the fluid inlet 51. The water supply path 90 is provided with a water pressure reducing valve 110, and the pressure of water supplied from the water supply source 100 is adjusted by the water pressure reducing valve 110. The water supply source 100 is configured as a tap water pipe. The water supplied to the drink transport path 70 by the dispenser head 50 is used as a cleaning liquid.

The air supply passage 60 and the water supply passage 90 are integrated into a common passage in the control box 40, and are connected to the distribution head 50 through the common passage. The air supply path 60 is connected to the control box 40 via a 1 st connector 41. The 1 st joint 41 functions as a gas inlet of the control box 40. The water supply path 90 is connected to the control box 40 through the 2 nd connector 42. The 2 nd joint 42 functions as a water inlet of the control box 40. The common flow path of the air supply path 60 and the water supply path 90 is connected to the control box 40 via the 3 rd joint 43. The 3 rd joint 43 functions as a fluid outlet of the control box 40. The air supply passage 60 and the water supply passage 90 may be connected to the fluid inlet 51 of the distribution head 50.

The dispenser head 50 is configured to switch the connection state between the fluid inlet 51 and the fluid outlet 52, the fluid inlet 51 is connected to the air supply passage 60 and the water supply passage 90, and the fluid outlet 52 is connected to the beverage transport passage 70. The dispensing head 50 includes an operation lever 53 (see fig. 1), and when a user operates the operation lever 53, the connection state between the fluid inlet 51 and the fluid outlet 52 is switched. In the present embodiment, the operation lever 53 is movable in the up-down direction and is switched between 3 positions (an upper position, a middle position, and a lower position).

When the operating lever 53 is located at the lower position, the dispensing head 50 is in the 1 st state in which the fluid inlet 51 and the fluid outlet 52 are communicated with each other through the inside of the beverage container 20. That is, when the operating lever 53 is located at the lower position, the dispensing head 50 connects the air supply passage 60 and the water supply passage 90 to the beverage delivery passage 70 through the inside of the beverage storage container 20. Therefore, when the beverage in the beverage storage container 20 is supplied to the beverage transport path 70 by the gas, that is, when the beverage is supplied from the beverage dispenser 30, the user sets the position of the operation lever 53 at the lower position.

When the lever 53 is at the intermediate position, the dispenser head 50 is in the 2 nd state in which the fluid inlet 51 and the fluid outlet 52 are directly communicated with each other. That is, when the operating lever 53 is at the intermediate position, the dispensing head 50 directly connects the air supply passage 60 and the water supply passage 90 to the beverage delivery passage 70. At this time, the inside of the beverage container 20 is cut off from the fluid inlet 51 and the fluid outlet 52. Therefore, when water is supplied from the water supply source 100 to the beverage delivery path 70, that is, when the beverage supply system 1 is cleaned, the user sets the position of the operation lever 53 at the intermediate position. This prevents water from being mixed into the beverage in the beverage storage container 20 when the beverage supply system 1 is cleaned.

When the operating lever 53 is positioned at the upper position, the dispensing head 50 is in the 3 rd state in which the fluid inlet 51, the inside of the beverage container 20, and the fluid outlet 52 are cut off from each other. That is, when the operating lever 53 is located at the upper position, the dispensing head 50 does not connect the air supply passage 60 and the water supply passage 90 to the interior of the beverage storage container 20 and the beverage conveying passage 70. Therefore, when the beverage stored in the beverage storage container 20 is exhausted and the beverage storage container 20 is replaced with a new beverage storage container, the user sets the position of the operating lever 53 at the upper position. Therefore, the occurrence of air leakage can be prevented when the beverage storage container 20 is replaced.

Thus, the dispensing head 50 is configured to be manually switched between the 1 st state, the 2 nd state, and the 3 rd state. Thus, the beverage supply system 1 can be cleaned even in a state where the dispensing head 50 is attached to the beverage storage container 20, and the labor of a user for cleaning can be reduced.

The cleaning apparatus further includes a control device 80. The control device 80 is disposed in the control box 40 and hidden from the outside by the control box 40.

Fig. 3 is a schematic diagram showing the configuration of the control device 80 in fig. 2. The control device 80 includes a memory 81, a peripheral circuit 82, and a processor 83. The memory 81 and the peripheral circuit 82 are connected to the processor 83 via signal lines. The control device 80 is configured as a microcomputer or a sequence controller, for example.

The memory 81 includes, for example, a volatile semiconductor memory (e.g., RAM) and a nonvolatile semiconductor memory (e.g., ROM). The memory 81 stores a program executed by the processor 83, various data used when various processes are executed by the processor 83, and the like.

The peripheral circuit 82 includes additional elements (e.g., a timer) necessary for the processor 83 to execute various processes. The processor 83 has one or more cpus (central Processing unit) and executes various processes.

As shown in fig. 2, the cleaning device further includes a gas on-off valve 61, a gas check valve 62, a water on-off valve 91, a water check valve 92, a pressure sensor 44, and an alarm device 45. These are disposed in the control box 40 and hidden from the outside by the control box 40.

The gas on-off valve 61 is disposed in the gas supply path 60 and opens and closes the gas supply path 60. The gas on-off valve 61 is electrically connected to the control device 80, and the control device 80 controls the gas on-off valve 61. The gas on-off valve 61 is, for example, an electromagnetic valve.

The gas check valve 62 is disposed in the gas supply passage 60 and prevents the gas from flowing backward (toward the gas supply source 10). In the present embodiment, the gas check valve 62 is disposed in the gas supply passage 60 on the downstream side of the gas opening/closing valve 61.

The water opening/closing valve 91 is disposed in the water supply passage 90 and opens and closes the water supply passage 90. The water opening/closing valve 91 is electrically connected to the control device 80, and the control device 80 controls the water opening/closing valve 91. The water opening/closing valve 91 is, for example, an electromagnetic valve.

The water check valve 92 is disposed in the water supply passage 90 to prevent the reverse flow of water (to the water supply source 100). In the present embodiment, the water check valve 92 is disposed in the water supply passage 90 on the downstream side of the water open/close valve 91.

In the present embodiment, the gas opening/closing valve 61 is configured to open the gas supply passage 60 when not energized and to close the gas supply passage 60 when energized. On the other hand, the water opening/closing valve 91 is configured to close the water supply path 90 when not energized and to open the water supply path 90 when energized.

The pressure sensor 44 is disposed in the gas supply passage 60 on the downstream side of the gas on-off valve 61, and detects the pressure in the gas supply passage 60 on the downstream side of the gas on-off valve 61. In the present embodiment, the pressure sensor 44 is disposed in the gas supply passage 60 on the downstream side of the gas check valve 62. The pressure sensor 44 is electrically connected to the control device 80, and an output from the pressure sensor 44 is input to the control device 80. The pressure sensor 44 may be disposed in the gas supply passage 60 between the gas opening/closing valve 61 and the gas check valve 62.

The alarm device 45 outputs an alarm. For example, the alarm device 45 is configured as a sound emitting component such as a piezoelectric sound emitting component, and outputs an alarm sound as an alarm. The alarm device 45 is electrically connected to the control device 80, and the control device 80 controls the alarm device 45.

As described above, when cleaning the beverage supply system 1, the user sets the position of the operation lever 53 to the neutral position. In addition, when cleaning the beverage supply system 1, the user operates the handle 321 to open the tap 32, so that the water of the cleaned beverage flow path is discharged from the tap 32. However, when cleaning the beverage supply system 1, there is a possibility that the user performs an operation different from the usual sequence and fails to properly clean the beverage supply system 1. In the present embodiment, the control device 80 detects an erroneous operation by the user based on the output of the pressure sensor 44.

Before the user requests cleaning of the beverage supply system 1, the water opening/closing valve 91 and the faucet 32 are closed, and the gas opening/closing valve 61 is opened. At this time, the pressure of the gas supply passage 60 is increased by the gas supplied from the gas supply source 10. After that, when the gas opening/closing valve 61 is changed from the open state to the closed state and the user opens the faucet 32 for cleaning, the gas in the gas supply passage 60 and the beverage delivery passage 70 is discharged from the faucet 32 to the atmosphere, and the pressure of the gas supply passage 60 is reduced to the vicinity of the atmospheric pressure.

Therefore, when the user requests the beverage supply system 1 to be cleaned, the control device 80 changes the gas on-off valve 61 from the open state to the closed state, and determines that the faucet 32 is in the closed state when the amount of decrease in the pressure of the gas supply path 60 detected by the pressure sensor 44 while the gas on-off valve 61 remains in the closed state is equal to or less than the 1 st threshold. The 1 st threshold value is determined in advance based on the experimental results and the like. Also, the 1 st threshold may also be zero. That is, the controller 80 may determine that the faucet 32 is in the closed state when the amount of decrease in the pressure of the air supply passage 60 detected by the pressure sensor 44 is zero while the gas on-off valve 61 is maintained in the valve-closed state.

In addition, even if the user turns on the water tap 32 appropriately in order to clean the beverage supply system 1, the operation lever 53 of the dispensing head 50 is not operated appropriately and the dispensing head 50 may be in the 1 st state. When the dispensing head 50 is in the 1 st state, even if the faucet 32 is opened when the gas on-off valve 61 is in the valve-closed state, the pressure of the gas supply path 60 does not decrease to the vicinity of the atmospheric pressure due to the influence of the internal pressure of the beverage storage container 20. That is, the amount of pressure decrease in the air supply passage 60 becomes small.

Therefore, when the user requests the beverage supply system 1 to be cleaned, the control device 80 changes the gas on-off valve 61 from the open state to the closed state, and determines that the dispensing head 50 is in the 1 st state when the amount of decrease in the pressure of the gas supply path 60 detected by the pressure sensor 44 while the gas on-off valve 61 remains in the closed state is greater than the 1 st threshold and equal to or less than the 2 nd threshold. The 2 nd threshold is determined in advance based on the experimental results and the like, and is set to a value larger than the 1 st threshold.

Further, the control device 80 maintains the water opening/closing valve 91 in the closed state while determining that the faucet 32 is in the closed state or determining that the dispenser head 50 is in the 1 st state, that is, while detecting the user's erroneous operation. This prevents water from being wasted and water from being mixed into the beverage due to an erroneous operation.

When the user's erroneous operation is detected, the control device 80 causes the alarm device 45 to output an alarm. Thus, the user can recognize the erroneous operation and can be prompted to clean in the correct order.

Cleaning treatment

The control described above will be specifically described below with reference to the flowchart of fig. 4. Fig. 4 is a flowchart showing a control routine of the cleaning process in the first embodiment. The control device 80 (specifically, the processor 83) repeatedly executes the control routine.

First, in step S101, control device 80 determines whether or not the user selects the washing mode. When it is required to clean the beverage supply system 1, the user selects the cleaning mode by means of the input device. The input device is electrically connected to the control device 80, and is configured as, for example, a button 49 (see fig. 1) provided on the outside of the control box 40. The control device 80 determines whether or not the cleaning mode is selected based on the output signal of the input device. When it is determined in step S101 that the cleaning mode is not selected, the control routine is terminated.

On the other hand, when it is determined in step S101 that the cleaning mode is selected, the present control routine proceeds to step S102. At this time, the gas on-off valve 61 is not energized, and therefore, the valve-open state is maintained. In step S102, the controller 80 closes the gas opening/closing valve 61. In the present embodiment, the controller 80 supplies power to the gas on-off valve 61. That is, the control device 80 changes the gas opening/closing valve 61 from the open state to the closed state.

Next, in step S103, the control device 80 determines whether or not the amount of decrease Δ P in the pressure of the air supply passage 60 detected by the pressure sensor 44 is larger than the 2 nd threshold TH 2. When it is determined that the decrease amount Δ P of the pressure is larger than the 2 nd threshold TH2, the present control routine proceeds to step S109.

In step S109, the control device 80 performs cleaning of the beverage supply system 1. For example, the controller 80 opens the water opening/closing valve 91 and closes the gas opening/closing valve 61 for a predetermined time to supply water to the beverage delivery path 70 for a predetermined time. In the present embodiment, the control device 80 supplies power to the water opening/closing valve 91 and the gas opening/closing valve 61 for a predetermined time. After step S109, the control routine is terminated.

On the other hand, when it is determined in step S103 that the pressure decrease amount Δ P is equal to or less than the 2 nd threshold TH2, the control routine proceeds to step S104. In step S104, the controller 80 determines whether or not the pressure decrease amount Δ P is larger than a 1 st threshold TH 1. The 1 st threshold TH1 is a value smaller than the 2 nd threshold TH 2.

When it is determined in step S104 that the pressure decrease amount Δ P is equal to or greater than the 1 st threshold TH1, the control routine proceeds to step S108. In step S108, the control device 80 determines that the dispensing head 50 is in the 1 st state, and detects an erroneous operation by the user.

Next, in step S107, the control device 80 causes the alarm device 45 to output an alarm. For example, the controller 80 causes the alarm device 45 to output an alarm sound for a predetermined time. This notifies the user of the occurrence of an erroneous operation. After step S107, the control routine is ended.

On the other hand, when it is determined in step S104 that the pressure decrease amount Δ P is equal to or less than the 1 st threshold TH1, the control routine proceeds to step S105. In step S105, the controller 80 determines whether or not a predetermined time has elapsed after the gas on-off valve 61 is closed in step S102. The prescribed time is predetermined in consideration of the time required for the user to open the faucet 32.

If it is determined in step S105 that the predetermined time has not elapsed, the control routine returns to step S102. On the other hand, when it is determined in step S105 that the predetermined time has elapsed, the control routine proceeds to step S106. In step S106, the controller 80 determines that the faucet 32 is closed, and detects an erroneous operation by the user.

Next, in step S107, the control device 80 causes the alarm device 45 to output an alarm as described above. After step S107, the control routine is ended.

Second embodiment

The cleaning apparatus according to the second embodiment is basically the same as the cleaning apparatus according to the first embodiment. Therefore, the second embodiment of the present invention will be described below mainly focusing on the differences from the first embodiment.

When the beverage supply system 1 is washed with water as described above, the water after washing remains in the beverage flow path. Therefore, in order to maintain the beverage flow path more cleanly, it is preferable to quickly drain the remaining water. In the second embodiment, when the cleaning of the beverage supply system 1 is completed, the gas is continuously supplied to the beverage flow path, and thereby the remaining water is discharged from the faucet 32.

Specifically, when the cleaning of the beverage supply system 1 is finished, the control device 80 executes the water discharge control for closing the water opening/closing valve 91 and opening the gas opening/closing valve 61 for a predetermined time. This enables water remaining in the beverage flow path to be quickly discharged, so that the beverage flow path can be maintained more cleanly.

However, if the faucet 32 is closed by an erroneous operation of the user during the execution of the drain control, the flow of air is cut off by the faucet 32, and the drain is blocked. Therefore, in the second embodiment, after execution of the drainage control, it is confirmed that the faucet 32 is in the open state by closing the gas opening-closing valve 61. When the faucet 32 is normally in the open state, the pressure of the gas supply passage 60 falls to the vicinity of the atmospheric pressure when the gas on-off valve 61 is closed.

Therefore, the controller 80 closes the gas on-off valve 61 after the execution of the drainage control, and determines that the faucet 32 is in the closed state when the amount of decrease in the pressure of the gas supply passage 60 detected by the pressure sensor 44 when the gas on-off valve 61 is closed is equal to or less than the 3 rd threshold value. The 3 rd threshold value is determined in advance based on the experimental results and the like. Also, the 3 rd threshold may be the same value as the 1 st threshold. In addition, the 3 rd threshold may also be zero. That is, the control device may determine that the faucet 32 is in the closed state when the amount of decrease in the pressure of the air supply passage 60 detected by the pressure sensor 44 when the gas on-off valve 61 is closed is zero.

On the other hand, after the execution of the drainage control, when the amount of decrease in the pressure of the air supply passage 60 detected by the pressure sensor 44 when the gas on-off valve 61 is closed is larger than the 3 rd threshold value, the control device 80 causes the alarm device 45 to output the end warning sound. This enables the user to recognize that the cleaning of the beverage supply system 1 is normally completed, and to prompt the user to turn off the water tap 32. For example, the end-alert tone has a volume less than or a frequency less than the alarm tone.

However, if the gas on-off valve 61 is opened when the user forgets to close the faucet 32, there is a possibility that gas leaks from the faucet 32. Therefore, after the cleaning of the beverage supply system 1, the gas on-off valve 61 is opened and closed to confirm that the water tap 32 is in the closed state. When the faucet 32 is normally in the closed state, the pressure of the gas supply path 60 hardly drops when the gas opening/closing valve 61 is opened and closed.

Therefore, after the cleaning of the beverage supply system 1, the control device 80 closes the water opening/closing valve 91 and opens/closes the gas opening/closing valve 61, and determines that the faucet 32 is in the open state when the amount of decrease in the pressure of the gas supply path 60 detected by the pressure sensor 44 when the gas opening/closing valve 61 is opened/closed is larger than the 4 th threshold value. The 4 th threshold value is determined in advance based on the experimental result and the like. Also, the 4 th threshold may be the same value as the 1 st threshold. In addition, the 4 th threshold may also be zero. The control device may also determine that the faucet 32 is in the open state when the pressure of the gas supply passage 60 detected by the pressure sensor 44 decreases while the gas on-off valve 61 is closed.

On the other hand, when the decrease amount of the pressure in the gas supply passage 60 detected by the pressure sensor 44 when the gas on-off valve 61 is opened or closed is equal to or less than the 4 th threshold, the control device 80 determines that the faucet 32 is in the closed state and stops the end warning sound. In other words, the control device 80 causes the alarm device 45 to continue outputting the end warning sound until the amount of decrease in the pressure of the gas supply passage 60 detected by the pressure sensor 44 when the gas on-off valve 61 is opened or closed becomes equal to or less than the 4 th threshold. This allows the user to recognize that the faucet 32 is in the open state, and thus reduces the possibility that the faucet 32 remains in the open state.

Cleaning treatment

Fig. 5 is a flowchart showing a control routine of the cleaning process in the second embodiment. The control device 80 (specifically, the processor 83) repeatedly executes the control routine.

Steps S201 to S209 are the same as steps S101 to S109 in fig. 4, and therefore, the description thereof is omitted. In the present control routine, in step S210 following step S209, the end processing shown in fig. 6 is executed.

Fig. 6 is a flowchart showing a control routine for ending the processing. First, in step S301, the control device 80 executes the drainage control. Specifically, the controller 80 closes the water opening/closing valve 91 and opens the gas opening/closing valve 61 for a predetermined time. In the present embodiment, the control device 80 does not supply power to the water on-off valve 91 and the gas on-off valve 61 for a predetermined time. The predetermined time is determined in advance in consideration of the time required for the gas to drain.

Next, in step S302, the controller 80 closes the gas opening/closing valve 61. In the present embodiment, the controller 80 supplies power to the gas on-off valve 61.

Next, in step S303, the control device 80 determines whether or not the amount of decrease Δ P in the pressure of the air supply passage 60 detected by the pressure sensor 44 is larger than the 3 rd threshold. When it is determined that the decrease amount Δ P of the pressure is larger than the 3 rd threshold TH3, the present control routine proceeds to step S304. In step S304, when the control device 80 determines that the faucet 32 is in the open state, the alarm device 45 is caused to output an end warning sound.

Next, in step S305, the controller 80 opens and closes the gas on-off valve 61 at predetermined intervals. For example, the controller 80 opens the gas on-off valve 61 for 1 second, and closes the gas on-off valve 61 for 1 second.

Next, in step S306, the control device 80 determines whether or not the amount of decrease Δ P in the pressure of the air supply passage 60 detected by the pressure sensor 44 when opening and closing the gas opening/closing valve 61 is larger than the 4 TH threshold TH 4. When it is determined that the decrease amount Δ P of the pressure is equal to or less than the 4 TH threshold TH4, the control routine proceeds to step S307. In step S307, the control device 80 determines that the faucet 32 is in the off state, and stops the end warning sound. After step S307, the control routine is ended.

On the other hand, when it is determined in step S303 that the pressure decrease amount Δ P is equal to or less than the 3 rd threshold TH3, the control routine proceeds to step S309. In step S309, the controller 80 determines that the faucet 32 is in the closed state, and detects an erroneous operation by the user.

Next, in step S310, the control device 80 causes the alarm device 45 to output an alarm, as in step S107 of fig. 4. After step S310, the control routine is terminated.

When it is determined in step S306 that the pressure decrease amount Δ P is larger than the 4 TH threshold TH4, the control routine proceeds to step S308. In step S308, the controller 80 determines that the faucet 32 is in the open state, and detects an erroneous operation by the user. After step S308, the control routine returns to step S304 to continue outputting the end alert tone.

After step S308, the controller 80 may cause the alarm device 45 to output an alarm instead of continuing to output the end warning sound. Steps S302, S303, S309, and S310 or steps S305 to S308 may also be omitted.

At least one of the gas check valve 62, the water check valve 92, and the water pressure reducing valve 110 may be omitted.

Third embodiment

The cleaning apparatus according to the third embodiment is basically the same as the cleaning apparatus according to the first embodiment. Therefore, the following description will focus on a third embodiment of the present invention, which is different from the first embodiment.

Fig. 7 is a schematic diagram showing the configuration of a beverage supply system 1' to which a cleaning device of a beverage supply system according to a third embodiment of the present invention is applied. Fig. 7 shows the inside of the control box 40, as in fig. 2. In the third embodiment, the beverage conveyance path 70 is connected to the control box 40 by a pair of joints 46.

In the third embodiment, the cleaning apparatus further includes a flow rate sensor 47 and a capacitance sensor 48. These are disposed in the control box 40 and hidden from the outside by the control box 40.

The flow rate sensor 47 is disposed in the water supply passage 90, and detects the flow rate of water flowing through the water supply passage 90. In the present embodiment, the flow rate sensor 47 is disposed in the water supply passage 90 on the upstream side of the water open/close valve 91. The flow rate sensor 47 is electrically connected to the control device 80, and an output from the flow rate sensor 47 is input to the control device 80. The flow rate sensor 47 may be disposed in the water supply passage 90 on the downstream side of the water open/close valve 91 and the water check valve 92.

The capacitance sensor 48 is disposed in the beverage conveyance path 70, and detects the presence or absence of a beverage in the beverage conveyance path 70. The electrostatic capacitive sensor 48 is a so-called non-contact sensor, and is mounted, for example, around the beverage delivery path 70. Therefore, the capacitance type sensor 48 can detect the state in the beverage transport path 70 without contacting the beverage in the beverage transport path 70. This can prevent the beverage from being contaminated by the sensor in the beverage transport path 70.

Conventionally, in cleaning the beverage supply system 1', it has been considered that the cleaning power can be improved by supplying a large amount of water in one water supply. On the other hand, as a result of intensive studies by the inventors of the present invention, it was found that the cleaning power can be improved by increasing the linear velocity of water to increase the energy of water. In order to increase the linear velocity of water, the amount of water in the primary feed needs to be reduced. However, if the amount of water is small, the water cannot flow through the beverage conveyance path 70 due to the resistance in the beverage conveyance path 70.

In the present embodiment, the controller 80 controls the water on-off valve 91 and the gas on-off valve 61 so that water and gas are alternately supplied to the beverage transport path 70. Specifically, the control device 80 executes the water injection control in which the control of closing the gas on-off valve 61 and opening the water on-off valve 91 so as to supply the reference amount of water from the water supply path 90 to the beverage delivery path 70 and the control of opening the gas on-off valve 61 and closing the water on-off valve 91 only for a predetermined time are alternately repeated.

In the water jet control, water and gas are intermittently supplied to the beverage delivery path 70, and so-called water jet cleaning is performed. At this time, since the gas functions as pressurized water, a small amount of water can be made to flow through the beverage conveying path 70. Accordingly, the linear velocity of water can be increased, and the beverage flow path of the beverage supply system 1' can be efficiently cleaned with a high cleaning force.

Further, the control device 80 calculates an estimated value of the amount of water supplied from the water supply path 90 to the beverage delivery path 70 in the water spray control based on the output of the flow sensor 47, and controls the gas on-off valve 61 and the water on-off valve 91 so that the estimated values become the reference amount. That is, the controller 80 closes the gas on-off valve 61 and opens the water on-off valve 91 until the estimated value of the amount of water supplied from the water supply path 90 to the beverage delivery path 70 reaches the reference amount during the water injection control. In other words, the controller 80 closes the water on-off valve 91 and opens the gas on-off valve 61 when the estimated value of the amount of water supplied from the water supply path 90 to the beverage delivery path 70 reaches the reference amount during the water injection control. This can suppress the amount of water supplied to the beverage transport path 70 from varying due to a change in water pressure or the like during the water jet control, and can suppress a decrease in cleaning force during the water jet control.

However, if the faucet 32 is turned off by an erroneous operation of the user during the water jet control, the flow of water is cut off by the faucet 32, and the supply amount of water does not reach the reference amount. Therefore, when the time until the estimated value of the amount of water supplied from water supply path 90 to beverage delivery path 70 reaches the reference amount during the water jet control is longer than the predetermined time, control device 80 determines that faucet 32 is in the closed state and detects an erroneous operation by the user.

In addition, if the dispensing head 50 is in the 1 st state due to an erroneous operation by the user during the water injection control, the beverage is supplied to the beverage delivery path 70. Therefore, when the beverage is detected by the capacitance type sensor 48 during the water jet control, the controller 80 determines that the dispenser head 50 is in the 1 st state, and detects an erroneous operation by the user.

Cleaning treatment

Fig. 8 is a flowchart showing a control routine of the cleaning process in the third embodiment. The control device 80 (specifically, the processor 83) repeatedly executes the control routine.

Steps S401 to S408 are the same as steps S101 to S108 in fig. 4, and therefore, the description thereof is omitted. In the control routine, when it is determined in step S403 that the pressure decrease amount Δ P is larger than the 2 nd threshold TH2, the water jet control shown in fig. 9 is executed in step S409.

Fig. 9 is a flowchart showing a control routine of the water jet control. First, in step S501, the controller 80 determines whether or not the capacitance sensor 48 detects a beverage. When it is determined that the capacitance sensor 48 has detected the beverage, the control routine proceeds to step S509.

In step S509, the control device 80 causes the alarm device 45 to output an alarm, as in step S107 of fig. 4. After step S509, the control routine is ended.

On the other hand, when it is determined in step S501 that the capacitance sensor 48 does not detect a beverage, the control routine proceeds to step S502. In step S502, the controller 80 opens the water opening/closing valve 91 and closes the gas opening/closing valve 61. In the present embodiment, the control device 80 supplies power to the water on-off valve 91 and the gas on-off valve 61.

Next, in step S503, the control device 80 acquires the output of the flow sensor 47.

Next, in step S504, the controller 80 calculates an estimated value EA of the amount of water supplied from the water supply path 90 to the beverage conveyance path 70 in the water-jet control, based on the output of the flow sensor 47. Specifically, the controller 80 integrates the flow rate of water detected by the flow rate sensor 47 to calculate an estimated value EA of the water amount.

Next, in step S505, the controller 80 determines whether or not the estimated value EA of the amount of water is equal to or greater than the reference amount a. The reference amount a is determined in advance based on the experimental results or the like so as to improve the cleaning power. When it is determined that the estimated value EA of the amount of water is smaller than the reference amount a, the present control routine proceeds to step S510.

In step S510, the controller 80 determines whether or not a predetermined time has elapsed after the water opening/closing valve 91 is opened and the gas opening/closing valve 61 is closed in step S502. The predetermined time is determined in advance in consideration of the time required for the supply amount of water to reach the reference amount a when the water pressure is low. If it is determined that the predetermined time has not elapsed, the control routine returns to step S503.

On the other hand, when it is determined in step S510 that the predetermined time has elapsed, the control routine proceeds to step S511. In step S511, the controller 80 determines that the faucet 32 is in the off state, and causes the alarm device 45 to output an alarm in the same manner as in step S107 of fig. 4. After step S511, the control routine is ended.

When it is determined in step S505 that the estimated value EA of the amount of water is equal to or greater than the reference amount a, the present control routine proceeds to step S506. In step S506, the controller 80 closes the water opening/closing valve 91 and opens the gas opening/closing valve 61 for a predetermined time. In the present embodiment, the control device 80 does not supply power to the water on-off valve 91 and the gas on-off valve 61 for a predetermined time. The predetermined time is determined in advance based on the experimental results, etc., so as to improve the cleaning power.

Next, in step S507, the control device 80 updates the execution count N. Specifically, the control device 80 adds 1 to the current number of execution times N to calculate a new number of execution times N. The initial value of the number of execution times N when the execution of the present control routine is started is zero.

Next, in step S508, the control device 80 determines whether the execution count N is equal to or greater than a threshold count Nth. The threshold number Nth is determined in advance. When it is determined in step S508 that the execution count N is smaller than the threshold count Nth, the control routine returns to step S501. Namely, the water injection control is continuously executed.

On the other hand, when it is determined in step S508 that the execution count N is equal to or greater than the threshold count Nth, the control routine is terminated. Namely, the water injection control is ended.

Further, steps S503 to S505, S510, and S511 may be omitted, and the controller 80 may open the water opening/closing valve 91 and close the gas opening/closing valve 61 for a predetermined time in step S502. The predetermined time is determined in advance so that the amount of water supplied from the water supply path 90 to the beverage delivery path 70 becomes a reference amount in the water injection control. At this time, the flow sensor 47 is omitted.

The entire beverage conveyance path 70 may be disposed outside the control box 40. In this case, the capacitance sensor 48 is disposed in the control box 40 so as to be adjacent to the beverage conveyance path 70, for example.

The controller 80 may execute a rinsing control (rice control) for controlling the gas on-off valve 61 and the water on-off valve 91 so as to continuously supply water to the beverage transport path 70 before the water injection control. This flushes the foam of the beverage remaining in the beverage transfer passage 70, and therefore the cleaning effect by the water jet control can be further improved.

Other embodiments

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes can be made within the scope of the claims.

For example, the beverage dispenser 30 may be configured not to cool the beverage delivered from the beverage container 20. In this case, the beverage dispenser 30 may also be constituted by the water tap 32 only.

In addition, the correspondence relationship between the position of the operating lever 53 in the dispensing head 50 and the state of the dispensing head 50 may also be different. For example, the dispensing head 50 may be configured to be in the 1 st state when the operating lever 53 is in the neutral position. In addition, the state of the dispensing head 50 can also be switched by a turning operation of the operating lever 53 or the like. The dispensing head 50 may be manually switched between the 1 st state and the 2 nd state. At this time, when the beverage storage container 20 is replaced, the main plug of the air supply source 10 is closed to stop the supply of air into the beverage storage container 20, for example.

The gas opening/closing valve 61 may be configured to close the gas supply passage 60 when not energized and to open the gas supply passage 60 when energized. The water opening/closing valve 91 may be configured to open the water supply path 90 when not energized and close the water supply path 90 when energized.

The alarm device 45 may be configured as a display such as a liquid crystal panel, and may output alarm information as an alarm. In this case, the alarm device 45 is disposed outside the control box 40, and the control device 80 causes the alarm device 45 to output the alarm information for a predetermined time, for example, in step S107 in fig. 4, step S207 in fig. 5, step S310 in fig. 6, step S407 in fig. 8, and steps S509 and S511 in fig. 9.

The alarm device 45 may be configured as a light emitting body such as a Light Emitting Diode (LED) and output light as an alarm. In this case, the alarm device 45 is disposed outside the control box 40, and the control device 80 causes the alarm device 45 to output light for a predetermined time, for example, in step S107 in fig. 4, step S207 in fig. 5, step S310 in fig. 6, step S407 in fig. 8, and steps S509 and S511 in fig. 9.

The above embodiments can be combined arbitrarily and implemented. When the second embodiment and the third embodiment are combined, in the control routine of fig. 8, the end processing of step S210 of fig. 5 is executed after step S409.

Description of the symbols

1. 1' -a beverage supply system;

10-an air supply source;

20-a beverage receiving container;

30-a beverage dispenser;

32-a water tap;

44-a pressure sensor;

50-a dispensing head;

51-a fluid flow inlet;

52-fluid outflow;

60-gas supply path;

61-gas open/close valve;

70-beverage delivery path;

80-a control device;

90-a water supply path;

91-water on-off valve;

100-water supply source.

Claims

1. A cleaning device for a beverage supply system for supplying a beverage, which is delivered from a beverage container through a beverage delivery path, to the outside from a faucet of a beverage dispenser,

the disclosed device is provided with: a dispensing head which is attached to the beverage storage container and has a fluid outlet and a fluid inlet connected to the beverage transport path;

the gas supply path is connected with a gas supply source and the fluid inflow port;

a gas opening/closing valve for opening/closing the gas supply path;

a water supply path connecting a water supply source and the fluid inlet;

a water opening/closing valve for opening/closing the water supply path;

a pressure sensor that detects a pressure in the gas supply path on a downstream side of the gas on-off valve;

and a control device for controlling the gas on-off valve and the water on-off valve,

the dispensing head is configured to be manually switched at least between a 1 st state and a 2 nd state, the 1 st state being a state in which the fluid inlet port and the fluid outlet port are communicated with each other via the inside of the beverage storage container, the 2 nd state being a state in which the fluid inlet port and the fluid outlet port are directly communicated with each other,

the control device detects an erroneous operation by a user of the beverage supply system based on an output of the pressure sensor.

2. A cleaning device for a beverage supply system according to claim 1, wherein when the user requests cleaning of the beverage supply system, the control device changes the gas on-off valve from an open valve state to a closed valve state, and determines that the faucet is in the closed state when a decrease amount of the pressure detected by the pressure sensor while the gas on-off valve remains in the closed valve state is equal to or less than a 1 st threshold value.

3. The cleaning device of the beverage supply system according to claim 2, wherein the control device determines that the dispensing head is in the 1 st state when a decrease amount of the pressure detected by the pressure sensor while the gas opening-closing valve maintains the valve-closed state is greater than the 1 st threshold and equal to or less than a 2 nd threshold.

4. A cleaning device for a beverage supply system according to claim 2 or 3, wherein said control means maintains said water opening/closing valve in a closed state while said erroneous operation is detected.

5. The cleaning device for a beverage supply system according to any one of claims 1 to 4, wherein when cleaning of the beverage supply system is completed, the control device executes a water discharge control for closing the water open/close valve and opening the gas open/close valve only for a predetermined time, closes the gas open/close valve after the execution of the water discharge control, and determines that the faucet is in the closed state when a decrease amount of the pressure detected by the pressure sensor when the gas open/close valve is closed is equal to or less than a 3 rd threshold value.

6. The cleaning device of the beverage supply system according to any one of claims 1 to 5, wherein the control means closes the water open-close valve and opens and closes the gas open-close valve after cleaning of the beverage supply system, and determines that the faucet is in the open state when a decrease amount of the pressure detected by the pressure sensor when the gas open-close valve is opened and closed is larger than a 4 th threshold value.

7. The cleaning device of a beverage supplying system according to any one of claims 1 to 6,

further comprises an alarm device for outputting an alarm,

when the erroneous operation is detected, the control device causes the alarm device to output an alarm.

8. A cleaning device of a beverage supply system according to claim 5,

further comprises an alarm device for outputting an alarm,

after the execution of the water discharge control, the control means causes the alarm means to output an end warning sound when an amount of decrease in the pressure detected by the pressure sensor when the gas opening-closing valve is closed is larger than the 3 rd threshold value.

9. The cleaning device for a beverage supply system according to claim 8, wherein the control device closes the water open/close valve and opens/closes the gas open/close valve after cleaning of the beverage supply system, and stops the emission of the end warning sound when a decrease amount of the pressure detected by the pressure sensor when the gas open/close valve is opened/closed is equal to or smaller than a 4 th threshold.