Beverage supply device

Abstract

To hardly cause clogging of a filter arranged on an upstream side of a fan for discharging air containing moisture in a mixing container by a powder raw material scattering in air in preparing a beverage in the mixing container in a beverage supply device for preparing the beverage by mixing the powder raw material for the beverage and raw material water for the beverage in the mixing container.SOLUTION: A beverage supply device 10 includes recovery means 60 for recovering a powder raw material containing moisture by making air pass through a recovery air channel F, the air including the powder raw material scattered, which contains moisture and is generated in mixing the powder raw material and raw material water in a mixing container 33 in a housing 11. The recovery air channel F has a fold-back structure in which a plurality of air channels extending vertically are folded to continue in an upper part or in a lower part. A filter 67 for capturing the powder raw material containing moisture is provided in a downstream part of the recovery air channel F, and a fan 66 is arranged on a downstream side, where the air flows, of the filter 67.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a beverage dispenser that dispenses a beverage prepared by mixing powdered beverage ingredients with beverage ingredient water. [Background technology]

[0002] Patent Document 1 discloses an invention of a beverage dispenser (drink supply device). This beverage dispenser includes multiple canisters (powdered raw material containers) for storing powdered raw materials used to make beverages, a hot water storage tank (raw water supply unit) for storing hot water for dissolving the powdered raw materials, multiple mixing cases (mixing containers) for mixing the powdered raw materials released from the canisters with the hot water released from the hot water storage tank, and a cup stage for placing a container such as a cup to receive the beverage mixed in the mixing cases. In this beverage dispenser, the powdered raw materials are supplied from the canisters and the hot water from the hot water storage tank into the mixing cases, and the powdered raw materials and hot water are stirred and mixed in the mixing cases to produce a beverage, which is then supplied to a container such as a cup placed on the cup stage.

[0003] This beverage dispenser is equipped with a duct having an exhaust passage for discharging steam-laden air from within the mixing case to prevent steam (moisture) from solidifying the powdered raw material in the upper canister when the powdered raw material and hot water are stirred within the mixing case, an air guide case having an exhaust space connected to the exhaust passage of the duct, an electric fan that sends air passing through the exhaust passage of the duct to the exhaust space of the air guide case, and a filter provided on the air inlet side of the electric fan. The steam-laden air from within the mixing case is drawn into the exhaust passage of the duct by the electric fan, and the air drawn into the duct passes through the filter before being drawn into the exhaust space of the air guide case. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-102786 Summary of the Invention [Problem to be solved by the invention]

[0005] In this beverage dispenser, when powdered ingredients and hot water are stirred in the mixing case, steam (moisture) prevents the powdered ingredients in the upper canister from solidifying. To prevent this, steam-laden air in the mixing case is exhausted from the air duct case through a duct. When powdered ingredients and hot water are stirred in the mixing case, the steam and other moisture-laden powdered ingredients are dispersed in the air inside the mixing case, and the dispersed moisture-laden powdered ingredients are captured by the filter. If the moisture-laden powdered ingredients continue to be trapped in the filter, the filter will become clogged with the solidified powdered ingredients, preventing the steam-laden air from being sent to the exhaust space in the air duct case. In this case, the steam in the mixing case rises without being collected, potentially solidifying the powdered ingredients in the canister located above the mixing case. The present invention aims to provide a beverage supply device that produces a beverage by mixing powdered beverage ingredients and beverage ingredient water in a mixing container, by making it less likely that a filter located upstream of a fan for discharging humid air from the mixing container will become clogged with powdered ingredients that are scattered into the air when the beverage is produced in the mixing container. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the present invention provides a beverage supply device comprising: a mixing container for mixing powdered raw materials for a beverage supplied from a powdered raw material container within a housing with raw water for the beverage supplied from a raw water supply unit to produce a beverage; recovery means for recovering the moist powdered raw materials by passing air through a recovery air duct from which the moist powdered raw materials generated when the powdered raw materials and the raw water are mixed in the mixing container are scattered; and a fan for sending the air from the mixing container from which the moist powdered raw materials are scattered into the recovery air duct, wherein the recovery air duct has a folded structure in which a plurality of air ducts extending vertically are folded back so that they are continuous at the top or bottom,The downstream part where the air flows is provided with an upward air passage which is formed by folding back the lower end of the downward air passage where the air flows from above to below, and a filter is arranged in the most downstream upward air passage so that the air flows in a direction intersecting the up-down direction, and a fan is arranged at a position separated downstream of the filter in the upper part of the most downstream upward air passage. The present invention provides a beverage supply device characterized by the above.

[0007] In the beverage dispenser configured as described above, the recovery air duct has a folded structure in which a plurality of air ducts extending vertically are folded back at the top or bottom so as to be continuous, The downstream portion of the airflow path is provided with an upward airflow path that is formed by folding back the lower end of the downward airflow path, which flows from above to below, to form the most downstream side. A filter is disposed in the most downstream upward airflow path so that air flows in a direction that intersects the vertical direction, and a fan is disposed at a position downstream of the filter at the top of the most downstream upward airflow path. The air into which the moist powdered raw material in the mixing container is dispersed adheres to the inner circumferential surface of the recovery air duct as it passes through the multiple air ducts extending up and down the recovery air duct, and is then recovered, so the moist powdered raw material is less likely to adhere to the filter disposed downstream. This makes it less likely that the filter will become clogged due to the moist powdered raw material continuing to adhere and solidify. The air in the recovery air duct flows downstream, turning back upward from the lower end of the downward air duct where it flows from above to below, and ascends up the most downstream upward air duct. This prevents moist powdered raw material from accumulating in the lower part of the downward air duct and ascending up the most downstream upward air duct. This further reduces the likelihood of moist powdered raw material adhering to the filter, making the filter less susceptible to clogging caused by moist powdered raw material adhering and solidifying. Furthermore, the air sent to the lower part of the most downstream upward air duct is sucked up by a fan installed at the top of the upward air duct while ascending up the upward air duct, passing through the entire filter. This allows the moist powdered raw material to be captured by the entire filter, preventing a decrease in the filter's ventilation function and powdered raw material capture function due to moist powdered raw material adhering and solidifying only to a portion of the filter.

[0008] In the beverage dispenser configured as described above, the recovery means may include a first recovery duct in which at least a downstream portion of the recovery air passage is disposed, and a filter and a fan may be disposed in the first recovery duct at a downstream portion of the recovery air passage. Also, in the beverage dispenser configured as described above, the recovery means may include a second recovery duct that receives air from the mixing container, and a recovery air passage may be formed in the second recovery duct.

[0011] In the beverage dispenser configured as described above, it is preferable to provide a partition that separates the interior of the housing into a beverage preparation chamber in which at least the powdered ingredient container and the mixing container are disposed and where the beverage is prepared, and a machine chamber in which at least the downstream portion of the recovery air passage is disposed behind the beverage preparation chamber, and to enable a filter to be inserted and attached through the housing or the partition, which makes it easy to replace the filter.

[0012] In the beverage supply device configured as described above, a partition may be provided to separate the beverage preparation chamber, in which at least the powdered ingredient container and the mixing container are disposed to prepare the beverage, from a machine chamber, in which at least the downstream portion of the recovery air duct is disposed behind the beverage preparation chamber, and the partition may be provided with an inlet port near the suction part of the fan to draw air into the beverage preparation chamber. In this way, moisture and powdered ingredients that leak into the beverage preparation chamber during preparation can be collected, and the beverage preparation chamber can be kept clean.

[0013] In the beverage dispenser configured as described above, it is preferable to provide a baffle plate in the recovery air passage to cause the air flow to meander. In this case, the meandering air in the recovery air passage causes a large amount of moist powdered raw material to adhere to the recovery air passage, further increasing the recovery efficiency of the moist powdered raw material, and further reducing the likelihood of clogging of the filter due to the moist powdered raw material adhering and solidifying. In this case, it is preferable to provide a baffle plate only in the downward air passage through which air flows from the upper side to the lower side of the recovery air passage. Providing a baffle plate only in the downward air passage of the recovery air passage allows for efficient recovery of the moist powdered raw material with fewer baffles. Furthermore, it is preferable that the recovery air passage be formed in a casing having an opening formed on one horizontal side thereof that is opened and closed by a lid, and that the baffle plate be attached to the lid. In this case, the baffle plate can be removed from the recovery air passage in the casing by opening the lid, and the powdered raw material adhering to the baffle plate can be easily cleaned. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a front view of a beverage supply device according to the present invention; [Figure 2] FIG. 2 is a perspective view of FIG. 1. [Figure 3] FIG. 2 is a perspective view of the state in which the front panel of FIG. 1 is removed. [Figure 4] FIG. 2 is a longitudinal cross-sectional view taken along line AA. [Figure 5] 10 is a schematic diagram showing a state in which a hot water supply section and a cold water supply section are connected to a raw water supply port formed in the base. FIG. [Figure 6] FIG. 2 is a schematic diagram of a hot water supply section and a cold water supply section. [Figure 7] 4 is a perspective view in which the beverage producing unit, the placing unit, the steam guide, etc. have been moved forward from FIG. 3. FIG. [Figure 8] FIG. 2 is an exploded perspective view showing the mixing vessel, the steam guide, and the recovery duct. [Figure 9] FIG. 2 is a longitudinal section of the mixing vessel, steam guide and recovery duct at the inlet of the recovery duct. [Figure 10] BB cross section. [Figure 11] FIG. 10 is a partially enlarged front view of the location where the recovery duct of the beverage preparation chamber is provided. [Figure 12] 12 is a partially enlarged perspective view of the filter in FIG. 11 with the filter removed to the front side. FIG. [Figure 13] FIG. 2 is a block diagram of a control device. [Figure 14] FIG. 10 is a schematic view of an embodiment in which a baffle plate is provided in a recovery air passage in a recovery duct, as viewed from the front side. [Figure 15] FIG. 10 is an exploded perspective view showing a mixing container, a steam guide, and a recovery duct of another embodiment. [Figure 16] FIG. 10 is a longitudinal cross-sectional view of the mixing vessel, steam guide, and recovery duct at the inlet of the recovery duct of another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0015] An embodiment of a beverage dispenser of the present invention will be described below with reference to the drawings. The beverage dispenser 10 of the present invention is also called a beverage dispenser, and is capable of dispensing five types of hot beverages, such as tea, containing hot water, and five types of cold beverages, such as tea, containing cold water (water), into a container such as a cup. As shown in FIGS. 1 to 4, the beverage dispenser 10 includes a beverage preparation chamber 20 in the front part of a substantially rectangular parallelepiped housing 11, which prepares the beverage by mixing powdered ingredients, such as tea, with hot water and / or cold water (water), and a machine chamber 21 in the rear part of the housing 11, with the interior of the housing 11 being partitioned into the beverage preparation chamber 20 and the machine chamber 21 by a partition 22.

[0016] As shown in Figures 1 to 4, the housing 11 includes a housing main body 12 that is open at the front side, and a front panel 13 that closes the front opening of the housing main body 12. The front panel 13 is supported on the right side of the housing main body 12 so as to be rotatable about a vertical axis. As shown in Figures 1 and 2, an opening 13a is formed in the center of the lower part of the front panel 13 in the left-right direction, and a placing portion 23 for placing a container such as a cup is provided in the lower part of the beverage preparation chamber 20 at the position where the opening 13a is formed. As shown in Figures 1 to 4, the placing portion 23 includes a receiving portion 24 for placing a container such as a cup, and a cover portion 25 that covers the upper side of the receiving portion 24. The receiving portion 24 is shaped like a drainboard so that beverage spilling from a container such as a cup can flow downward. A circular recess 24a is formed on the upper surface of the receiving base 24 as a marker for placing a container such as a cup, and this circular recess 24a is located directly below the beverage dispensing section 35a from which the beverage produced in the beverage supply section 30 is poured.

[0017] As shown in Figure 3, the beverage preparation chamber 20 is provided with a beverage supply unit 30 that supplies beverages into containers placed on the placement unit 23. In this embodiment, the beverage preparation chamber 20 is provided with four beverage supply units 30 for supplying hot or cold water and powdered ingredients for four types of hot or cold beverages other than hot or cold water. Since the four beverage supply units 30 other than the hot or cold water supply units 30 have substantially the same configuration, the following explanation will mainly be made using one beverage supply unit 30.

[0018] 3 and 4, the beverage supply unit 30 supplies a beverage to a container placed on the placing unit 23, and includes a beverage production unit 31 that produces a beverage from raw water consisting of hot and / or cold water (cold water) and powdered ingredients for the beverage, and a beverage guide 35 that guides the beverage produced in the beverage production unit 31 to the container on the placing unit 23. The beverage production unit 31 includes a powdered ingredient container 32 that stores the powdered ingredients for the beverage, a mixing container 33 that mixes the powdered ingredients for the beverage with the raw water, and an agitator 34 that agitates and mixes the powdered ingredients and the raw water in the mixing container 33.

[0019] The powdered raw material container 32 stores powdered raw materials for a powdered beverage such as tea, and is detachably attached to a base 14 provided in the beverage preparation chamber 20. A powdered raw material outlet 32a is provided at the bottom of the powdered raw material container 32, and the powdered raw materials are discharged from the outlet 32a into the mixing container 33. A screw 32b is provided at the bottom of the powdered raw material container 32, and the drive of a motor 32d is transmitted to the screw 32b via a coupling member 32c. When the screw 32b is rotated by the rotation of the motor 32d, the powdered raw materials in the powdered raw material container 32 are discharged from the outlet 32a into the mixing container 33.

[0020] As shown in Figure 4, the mixing container 33 stirs and mixes the powdered ingredients with raw water consisting of hot and / or cold water, and is detachably supported on a base 14 provided in the beverage preparation chamber 20. The mixing container 33 is open at the bottom of the powdered ingredient container 32, and the powdered ingredients discharged from the discharge outlet 32a of the powdered ingredient container 32 are carried into the mixing container 33. A discharge outlet 33a is formed at the bottom of the mixing container 33, and the beverage stirred and mixed in the mixing container 33 is discharged from the discharge outlet 33a into a beverage guide 35 provided below.

[0021] 5, base 14 is provided with raw water supply port 14a for supplying raw water consisting of hot and / or cold water (cold water) into mixing container 33. Hot water supply unit 40 and cold water supply unit 50, which will be described later, are connected to raw water supply port 14a, and hot and / or cold water as raw water sent from hot water supply unit 40 and / or cold water supply unit 50 is supplied to mixing container 33 through raw water supply port 14a.

[0022] As shown in FIG. 4, the mixing vessel 33 is provided with an agitator 34. The agitator 34 includes an agitator motor 34a mounted on the base 14 at the rear of the mixing vessel 33, a rotating shaft 34d rotated by the agitator motor 34a, and a disk 34e attached to the tip of the rotating shaft 34d. A coupling magnet 34b is attached to the output shaft of the agitator motor 34a, and a coupling magnet 34c is attached to the base end of the rotating shaft 34d that faces the agitator motor 34a. The rotating shaft 34d is detachably coupled to the agitator motor 34a via the coupling magnets 34b and 34c, and the agitator motor 34a rotates the rotating shaft 34d via the coupling magnets 34b and 34c. The rotating shaft 34d extends above the discharge port 33a at the bottom of the mixing vessel 33, and a disk 34e is attached to the tip of the rotating shaft 34d above the discharge port 33a. A stirring blade 34f is provided on the underside of a disk portion 34e at the tip of the rotating shaft 34d, and the powdered ingredients and raw material water in the mixing container 33 are stirred and mixed by the rotation of the disk portion 34e to produce a beverage.

[0023] As shown in Figure 3, the beverage guide 35 guides the beverage produced in the beverage production unit 31 to a container placed on the mounting unit 23. The beverage guide 35 has a shallow box shape extending from below the discharge port 33a of the mixing container 33 to the center in the left-right direction at the front of the mounting unit 23, and is supported on the upper side of the cover part 25 of the mounting unit 23. The beverage guide 35 is provided with a cylindrical beverage extraction part 35a that extends downward above the center in the left-right direction at the front of the mounting unit 23, and the beverage discharged from the mixing container 33 to the beverage guide 35 is poured from the beverage extraction part 35a into the container on the mounting unit 23.

[0024] As shown in Fig. 6, hot water supply unit 40 supplies hot water as a raw material for a beverage to be received in a container such as a cup on mounting unit 23. Hot water supply unit 40 is provided with a hot water storage tank 41 that stores hot water as a raw material for a beverage, and a first water supply pipe 42 that is led out from a water supply source such as a tap is connected to hot water storage tank 41. First and second water supply valves 42a, 42b are installed in first water supply pipe 42, and water from the water supply source is supplied to hot water storage tank 41 by opening first and second water supply valves 42a, 42b.

[0025] The hot water storage tank 41 is provided with a heater 43 and a temperature sensor 44. The heater 43 heats the water (hot water) in the hot water storage tank 41 to generate hot water. The temperature sensor 44 detects the temperature of the water (hot water) in the hot water storage tank 41. The heater 43 is controlled to operate based on the temperature detected by the temperature sensor 44, and the hot water in the hot water storage tank 41 is heated (kept warm) by the heater 43 to a temperature suitable for drinking. In addition, a water level sensor 45 is provided in the hot water storage tank 41, and the water level sensor 45 detects the water level in the hot water storage tank 41. The first and second water supply valves 42a, 42b are controlled to open and close based on the water level detected by the water level sensor 45, and the water (hot water) in the hot water storage tank 41 is maintained within a predetermined water level range.

[0026] A hot water supply pipe 46 is connected to the bottom of the hot water storage tank 41, and a hot water supply pump 47 is installed in the hot water supply pipe 46. Hot water in the hot water storage tank 41 is sent to the hot water supply pipe 46 by the hot water supply pump 47. In addition, first to fifth hot water delivery valves 48a to 48e, each consisting of a three-way valve, are installed in the hot water supply pipe 46, and first to fifth hot water delivery pipes 49a to 49e are connected to the first to fifth hot water delivery valves 48a to 48e. The outlet end of the first hot water delivery pipe 49a is connected to the raw water supply port 14a of the left beverage supply unit 30, the outlet end of the second hot water delivery pipe 49b is connected to the raw water supply port 14a of the second beverage supply unit 30 from the left, the outlet end of the third hot water delivery pipe 49c is connected to the raw water supply port 14a of the third beverage supply unit 30 from the left (second from the right), and the outlet end of the fourth hot water delivery pipe 49d is connected to the raw water supply port 14a of the right beverage supply unit 30. The outlet end of the fifth hot water delivery pipe 49e is connected to the beverage pouring unit (not shown) of the beverage guide 35.

[0027] By operating the hot water supply pump 47 and opening any one of the first to fourth hot water delivery valves 48a to 48d, the hot water in the hot water storage tank 41 passes through the hot water delivery pipe 46 and the first to fourth hot water delivery pipes 49a to 49d corresponding to the opened first to fourth hot water delivery valves 48a to 48d, and is supplied into the mixing vessel 33. In addition, by operating the hot water supply pump 47 and opening the fifth hot water delivery valve 48e, the hot water in the hot water storage tank 41 passes through the hot water delivery pipe 46 and the fifth hot water delivery pipe 49e and is supplied to a container such as a cup placed on the placement portion 23.

[0028] As shown in Fig. 6, water supply unit 50 supplies cold water (water) that will be used as raw water for the beverage received in a container such as a cup on mounting unit 23. Water supply unit 50 is provided with cooling tank 51 for generating cold water that will be used as raw water for the beverage, and cooling tank 51 stores cooled water. Also, cooling tank 51 is provided with evaporator pipe 52 of a refrigeration device, and the cooled water in cooling tank 51 is cooled by the heat of vaporization of a refrigerant circulating through evaporator pipe 52 of the refrigeration device. Cooling tank 51 is provided with water cooling pipe 53 for cooling the water that will be used as raw water.

[0029] A second water supply pipe 54 extending from the first water supply pipe 42 immediately downstream of the first water supply valve 42a (between the first water supply valve 42a and the second water supply valve 42b) is connected to the water inlet end of the water cooling pipe 53, and water from a water supply source such as a city water supply is delivered to the water cooling pipe 53 in the cooling tank 51 through a part of the first water supply pipe 42 and the second water supply pipe 54. A water supply pipe 55 is connected to the water outlet end of the water cooling pipe 53, and cold water cooled by the water cooling pipe 53 is delivered to the water supply pipe 55. Four branch portions 55a to 55d are provided on the water supply pipe 55, and first to fifth cold water delivery valves 56a to 56e are installed in the pipe portions extending from the branch portions 55a to 55d and in the tip 55e of the water supply pipe 55. The first to fifth cold water delivery valves 56a to 56e are connected to the first to fifth cold water delivery pipes 57a to 57e, and the outlet ends of the first to fifth cold water delivery pipes 57a to 57e are connected to the middle parts of the first to fifth hot water delivery pipes 49a to 49e.

[0030] By opening the first water supply valve 42a and any one of the first to fourth cold water delivery valves 56a to 56d, water from the water supply source is sent through a part of the first water supply pipe 42 and the second water supply pipe 54 to the water cooling pipe 53 of the cooling tank 51, where it is cooled and becomes cold water. The cold water cooled in the water cooling pipe 53 in the cooling tank 51 is supplied into the mixing vessel 33 through the water delivery pipe 55, the first to fourth cold water delivery pipes 57a to 57d corresponding to the opened first to fourth cold water delivery valves 56a to 56d, and the first to fourth hot water delivery pipes 49a to 49d connected to correspond to the first to fourth cold water delivery pipes 57a to 57d. In addition, by opening the first water supply valve 42a and the fifth cold water delivery valve 56e, water from the water supply source is sent through part of the first water supply pipe 42 and the second water supply pipe 54 to the water cooling pipe 53 of the cooling tank 51, where it is cooled and becomes cold water, and the cold water cooled in the water cooling pipe 53 in the cooling tank 51 is supplied to a container such as a cup placed on the placement portion 23 through the water supply pipe 55, the fifth cold water delivery pipe 57e, and the fifth hot water delivery pipe 49e.

[0031] As shown in Figure 7, within the housing 11, in order to exhaust humid air from within the mixing container 33 when a beverage is being prepared in the beverage preparation unit 31, recovery means 60 is provided for recovering moist powdered ingredients from the air into which the moist powdered ingredients are dispersed from within the mixing container 33. The recovery means 60 is equipped with a recovery air duct F for recovering moist powdered ingredients from the air into which the moist powdered ingredients are dispersed, and the recovery air duct F has a folded structure in which multiple vertically extending air ducts are folded back so that they are connected at the top or bottom. The recovery air duct F recovers the moist powdered ingredients in the air by causing the moist powdered ingredients to adhere to the inner circumferential surface of each air duct when the air into which the moist powdered ingredients are dispersed passes through the multiple vertically extending air ducts having the folded back structure.

[0032] 7 and 8, the recovery means 60 of this embodiment includes a steam guide (second recovery duct) 61 that receives moist air from each mixing container 33 of the four beverage preparation units 31, and a recovery duct (first recovery duct) 64 in which at least the downstream portion of the recovery air duct F is disposed. The steam guide 61 constitutes an exhaust path for discharging moist air from the mixing container 33, and also constitutes a drainage path for draining raw water or beverage that has overflowed from the mixing container 33. The steam guide 61 of this embodiment also includes a part of the recovery air duct F that recovers moist powdered ingredients from the air into which the moist powdered ingredients are scattered in the process of sending moist air from the mixing container 33 to the recovery duct 64.

[0033] The steam guide 61 receives exhaust air and drained water from the four mixing containers 33 and has a box-shaped casing 61a that extends in the width direction of the housing 11 and has an open-topped opening. The steam guide 61 is detachably attached to the base 14 behind the four mixing containers 33 within the beverage preparation chamber 20. As shown in FIG. 8 , the steam guide 61 has a lid 62 that can be freely opened and closed to cover the top opening of the casing 61a, and the lid 62 has inlet ports 62a formed by cutouts at positions opposite each mixing container 33. Moist air in the mixing containers 33 or overflowing raw water or beverage flows into the front of the steam guide 61 through the inlet ports 62a. The bottom of the casing 61a of the steam guide 61 is inclined downward so that the left side is downward, and a drain port 61b is provided on the left side of the bottom of the steam guide 61 for draining the raw water, beverage, or condensed water that has flowed in from the mixing containers 33. A drain pipe 63 is provided below the drain portion 61b, and water discharged from the drain portion 61b passes through the drain pipe 63 and is discharged from the drain portion of the placement portion .

[0034] 8 and 9, an air outlet 61c is formed in the casing 61a of the steam guide 61 at the top of the left side of the rear wall, and the rear side of this outlet 61c is connected to an air inlet 64b of the recovery duct 64. A plate-shaped air path forming portion 62b is provided on the underside of the lid portion 62 in a position facing the outlet 61c and the inlet 64b on the front side, and the lower end of the air path forming portion 62b extends below the lower ends of the outlet 61c and the inlet 64b. The air path forming portion 62b separates the space in front of the outlet 61c in the steam guide 61 from front to back except for the lower part, and humid air that flows from the mixing container 33 into the front part of the steam guide 61 descends from the front side of the air path forming portion 62b, passes below the air path forming portion 62b, and rises behind the air path forming portion 62b. The space before and after the air passage forming portion 62b in the steam guide 61 forms part of the recovery air passage F, which has a folded structure in which humid air flowing in from the mixing container 33 continues at the bottom. As shown in FIG. 9, the recovery air passage F in the steam guide 61 includes a downward air passage F1 in front of the air passage forming portion 62b, through which air flows downward, and an upward air passage F2 in rear of the air passage forming portion 62b, through which air flows upward. The lower end of the downward air passage F1 is connected to the upward air passage F2 by folding back to the rear, and the downward air passage F1 is continuous with the upward air passage F2 at the bottom. Note that the directions of the air flowing through the downward air passage and the upward air passage are indicated by dashed lines in the figure.

[0035] 9 and 10, the recovery duct 64 comprises at least a downstream portion of the recovery air passage F that recovers moist powdered raw material from the air into which the moist powdered raw material generated in the mixing container 33 scatters, and is connected to the inside of the mixing container 33 via the steam guide 61 described above. As shown in FIGS. 7 to 9, the recovery duct 64 comprises a casing 64a having an opening 64c on the front side so that the recovery air passage F is formed therein, and a lid 65 is provided on the front opening 64c of the casing 64a so as to be able to open and close, and covers the portion below an inlet 64b located at the top. As shown in FIGS. 7 and 11, the recovery duct 64 is attached to the rear side of the partition 22 in the machine room 21, at a position where the front opening 64c of the recovery duct 64 is exposed from the opening 22a formed in the partition 22. The lid 65 closes the opening 22a and the opening 64c of the recovery duct 64 at the front side of the partition 22 facing the beverage preparation chamber 20, and the interior of the recovery duct 64 can be opened and closed by the lid 65 at the front side facing the beverage preparation chamber 20. The lid 65 is configured as a part of the partition separating the beverage preparation chamber 20 and the machine chamber 21.

[0036] As shown in FIGS. 8 to 10 , an air-path forming section 64d is provided within the recovery duct 64 to form multiple vertically extending air paths. This air-path forming section 64d forms a return air path F within the recovery duct 64, with the return air paths having a folded structure in which the multiple vertically extending air paths are folded back at the top or bottom so that they are continuous. When viewed from the front, the air-path forming section 64d has an upside-down L-shape. The return air path forming section 64d forms a downward air path F3 extending vertically on the right side of the recovery duct 64, through which air flows downward, and an upward air path F4 extending vertically below approximately the center of the recovery duct 64, excluding the right side, through which air flows upward. The lower end of the downward air path F3 is folded back to the left and connected to the upward air path F4, and the downward air path F3 is continuous with the upward air path F4 at its lower end. In this embodiment, the upward air path F4 is the most downstream air path.

[0037] As shown in FIGS. 8 and 10 , a fan 66 is provided on the left side of the recovery duct 64, and the air in the mixing container 33 is sucked (sent) into the steam guide 61 and the recovery duct 64 by the fan 66. The fan 66 is disposed at the top of the upward air passage F4, which is the most downstream portion of the recovery air passage F. A filter 67 is provided upstream of the fan 66 in the upward air passage F4 of the recovery duct 64. The filter 67 is supported so as to be movable forward and backward by rails 64e extending forward and backward and provided at the top of the air passage forming portion 64d and the bottom of the recovery duct 64. The filter 67 is disposed in the most downstream upward air passage F4 so that air flows left and right in a direction that intersects the up-down direction. The filter 67 is also disposed upstream of and spaced from the fan 66, allowing air to pass through the entire filter 67, not just the portion facing the fan 66.

[0038] 12, an opening 65a is formed in the lid 65 at a position opposite the filter 67, and the filter 67 can be attached and detached from this opening 65a into the recovery duct 64. The filter 67 can be attached by inserting it along the rails 64e from the opening 65a of the lid 65 on the beverage preparation chamber 20 side, and can be removed by pulling it out along the rails 64e from the opening 65a of the lid 65 on the beverage preparation chamber 20 side.

[0039] 1 and 2, an operation panel unit 70 for dispensing a beverage from the beverage supply unit 30 is provided above the opening 13a on the front surface of the front panel 13. A display panel 71 for displaying the type of beverage is provided in the center of the operation panel unit 70 in the left-right direction, and a contact-type supply operation unit 72 and a non-contact-type supply operation unit 73 are provided adjacent to both the left and right sides of the display panel 71 on the operation panel unit 70 as supply operation units for operating to dispense a beverage from the beverage supply unit 30.

[0040] In this embodiment, five contact-type supply operation units 72A-72E for supplying five types of cold beverages are arranged vertically on the left side of display panel 71, and five non-contact-type supply operation units 73A-73E for supplying the same beverages as contact-type supply operation units 72A-72E are arranged to the left of contact-type supply operation units 72A-72E. Also, five contact-type supply operation units 72F-72J for supplying five types of hot beverages are arranged vertically on the right side of display panel 71, and five non-contact-type supply operation units 73F-73J for supplying the same beverages as contact-type supply operation units 72F-72J are arranged to the right of contact-type supply operation units 72F-72J. In addition, contact-type supply operation units 72A to 72E (non-contact-type supply operation units 73A to 73E) and contact-type supply operation units 72F to 72J (non-contact-type supply operation units 73F to 73J) for supplying the same beverage at different temperatures (cold and hot) are arranged side by side at the same height.

[0041] As shown in Figure 13, the beverage supply device 10 is equipped with a control device 80 that controls the supply of beverages to containers placed on the placement section 23, and the control device 80 is connected to the beverage ingredient delivery motor 32d, the stirring motor 34a, the first and second water supply valves 42a, 42b, the heater 43, the temperature sensor 44, the water level sensor 45, the hot water pump 47, the first to fifth hot water delivery valves 48a to 48e, the first to fifth cold water delivery valves 56a to 56e, the fan 66, and the operation panel section 70.

[0042] The control device 80 is equipped with beverage supply means for supplying beverages produced in the beverage supply unit 30, including a cold beverage supply means for supplying a cold beverage using cold water (cold water) cooled in the cooling tank 51 in an amount corresponding to the capacity of a container such as a cup, a cold water supply means for supplying cold water cooled in the cooling tank 51 to a container such as a cup, a hot beverage supply means for supplying a hot beverage using hot water in the hot water storage tank 41 in an amount corresponding to the capacity of a container such as a cup, and a hot water supply means for supplying hot water in the hot water storage tank 41 to a container such as a cup.

[0043] When an operation signal is input to control device 80 when one of contact supply operation units 72A-72D is pressed down, or when an operation signal is input when one of non-contact supply operation units 73A-73D is operated without contact by holding an object such as a finger over the front side of the unit, control device 80 executes cold beverage supply means corresponding to contact supply operation unit 72A-72D or non-contact supply operation unit 73A-73D to supply a cold beverage from beverage supply unit 30. When an operation signal is input to control device 80 when contact supply operation unit 72E is pressed down, or when an operation signal is input to control device 80 when non-contact supply operation unit 73E is operated without contact by holding an object such as a finger over the front side of the unit, control device 80 executes cold water supply means to supply cold water from beverage supply unit 30.

[0044] When an operation signal is input to control device 80 when one of contact supply operation units 72F-72I is pressed down, or when an operation signal is input when one of non-contact supply operation units 73F-73I is pressed down with an object such as a finger, the control device 80 executes the hot beverage supply means corresponding to contact supply operation unit 72F-72I or non-contact supply operation unit 73F-73I to supply a hot beverage from beverage supply unit 30. When an operation signal is input to control device 80 when contact supply operation unit 72J is pressed down, or when an operation signal is input to control device 80 when non-contact operation is performed by holding an object such as a finger, the control device 80 executes the hot water supply means to supply hot water from beverage supply unit 30.

[0045] Next, the control of the cold beverage supply means, cold water supply means, hot beverage supply means, and hot water supply means will be described. When an operation signal is input to the control device 80 by pressing one of the contact supply operation units 72A-72D, or an operation signal is input by non-contact operation by holding an object such as a finger over the front of one of the non-contact supply operation units 73A-73D, the control device 80 executes the cold beverage supply means. By executing the cold beverage supply means, the control device 80 activates the beverage ingredient delivery motor 32d of the beverage supply unit 30 corresponding to the contact supply operation unit 72A-72D or non-contact supply operation unit 73A-73D, and opens the first water supply valve 42a and the first to fourth cold water delivery valves 56a-56d corresponding to the contact supply operation units 72A-72D or non-contact supply operation units 73A-73D. The powdered ingredients in the powdered ingredient container 32 are transferred into the mixing container 33, and the cold water cooled in the cooling tank 51 is supplied into the mixing container 33. In addition, by operating the stirring motor 34a of the stirring device 34, the powdered ingredients of the beverage and the cold water supplied into the mixing container 33 are stirred and mixed to become a cold beverage, and the produced cold beverage is poured through the beverage guide 35 into a container such as a cup on the mounting part 23, and the cold beverage is supplied to the user.

[0046] When an operation signal is input to the control device 80 by pressing the contact-type supply operation unit 72E or by holding an object such as a finger over the front of the non-contact-type supply operation unit 73E, the control device 80 executes the cold water supply means. By executing the cold water supply means stage, the control device 80 opens the first water supply valve 42a and the fifth cold water delivery valve 56e for a time period corresponding to the container. The cold water cooled in the cooling tank 51 is poured into a container such as a cup on the mounting portion 23, and the user is provided with cold water (cold drink).

[0047] When an operation signal is input to the control device 80 by pressing one of the contact-type supply operation units 72F-72I, or by non-contact operation by holding an object such as a finger over the front of one of the non-contact-type supply operation units 73F-73I, the control device 80 executes the hot beverage supply means. By executing the hot beverage supply means, the control device 80 activates the beverage ingredient delivery motor 32d of the beverage supply unit 30 corresponding to the contact-type supply operation unit 72F-72I or the non-contact-type supply operation unit 73F-73I, operates the hot water pump 47, and opens the first to fourth hot water delivery valves 48a-48d corresponding to the contact-type supply operation unit 72F-72I or the non-contact-type supply operation unit 73F-73I. The powdered ingredients in the powdered ingredient container 32 are delivered to the mixing container 33, and the hot water in the hot water storage tank 41 is supplied to the mixing container 33. In addition, by operating the stirring motor 34a of the stirring device 34, the powdered ingredients of the beverage and the hot water supplied into the mixing container 33 are stirred and mixed to become a hot beverage, and the resulting hot beverage is poured through the beverage guide 35 into a container such as a cup on the placing section 23, and the hot beverage is supplied to the user.

[0048] When an operation signal is input to the control device 80 by pressing the contact supply operation unit 72J or by non-contact operation by holding an object such as a finger over the front side of the non-contact supply operation unit 73J, the control device 80 executes the hot water supply means. By executing the hot water supply means, the control device 80 operates the hot water pump 47 for a time according to the container and opens the fifth hot water delivery valve 48e. The hot water in the hot water storage tank 41 is poured into a container such as a cup on the mounting portion 23, and the hot water (hot drink) is supplied to the user.

[0049] In this beverage dispenser 10, the fan 66 is operated for a certain period of time at least when the cold beverage or hot beverage dispenser (particularly the hot beverage dispenser) is operating. When the beverage dispenser is operating to produce a beverage, air containing moisture (steam) from powdered ingredients in each mixing container 33 is dispersed and discharged into the machine chamber 21 through the internal space of the steam guide 61 and the recovery duct 64. The air containing the moisture (steam) powdered ingredients first passes through the internal space of the steam guide 61, and the moisture-containing powdered ingredients adhere to the inner circumferential surface of the steam guide 61, particularly the inner circumferential surfaces around the downward air duct F1 and the upward air duct F2 as they pass through the downward air duct F1 and the upward air duct F2 in front and behind the air duct forming portion 62b, and are then collected.

[0050] The air containing the dispersed moist powdered raw material in each mixing container 33 is sent to the steam guide 61 and then sent from the inlet 64b into the internal space of the recovery duct 64. As the air containing the dispersed moist powdered raw material passes through the downward air duct F3 and the upward air duct F4 of the recovery air passage F in the recovery duct 64, it adheres to the inner peripheral surfaces of the downward air duct F3 and the upward air duct F4 and is collected. The air rising through the upward air duct F4 is drawn to the left side, which is the fan 66 side, and passes through the filter 67. The air that has passed through the filter 67 is then discharged into the machine room 21. In this way, the filter 67 is filled with air that has passed through the downward air duct F1 and the upward air duct F2 that constitute the recovery air passage F of the steam guide 61 and the downward air duct F3 and the upward air duct F4 that constitute the recovery air passage F of the recovery duct 64, and has recovered a large amount of the dispersed moist powdered raw material. Therefore, the filter 67 is less likely to become clogged due to the continued adhesion and solidification of the dispersed moist powdered raw material. This allows humid air to be expelled from mixing container 33, preventing the powdered raw material in powdered raw material container 32 from solidifying due to the humid air in mixing container 33. In addition, since the amount of powdered raw material captured by filter 67 is reduced, the frequency of replacement or maintenance of filter 67 decreases.

[0051] The beverage dispenser 10 configured as described above comprises a mixing container 33 for mixing powdered ingredients for a beverage supplied from a powdered ingredient container 32 with raw water for a beverage supplied from a hot water supply unit 40 and / or a water supply unit 50 (raw water supply unit) within the housing 11 to produce a beverage, a recovery means 60 for recovering the moist powdered ingredients by passing air through a recovery air duct F from which moist powdered ingredients are scattered when the powdered ingredients and raw water are mixed in the mixing container 33, and a fan 66 for sending the air from the mixing container 33 from which the moist powdered ingredients are scattered into the recovery air duct. The recovery air duct F has a folded structure in which multiple air ducts extending vertically are folded back so as to be continuous at the top or bottom, and a filter 67 for capturing moist powdered ingredients is disposed downstream of the recovery air duct F, and a fan 66 is disposed downstream of the air flow of the filter 67.

[0052] In this embodiment, the recovery means 60 includes a recovery duct (first recovery duct) 64 in which at least the downstream portion of the recovery air passage F is disposed, and a steam guide (second recovery duct) 61 that receives air from the mixing container 33 and has the recovery air passage F formed therein. The steam guide 61 is provided with an air passage forming section 62b that guides the air so that it descends downward and then ascends, at a position opposite the air inlet 64b of the recovery duct 64, and a downward air passage F1 and an upward air passage F2 of the recovery air passage F are formed before and after the air passage forming section 62b (in the direction in which the inlet 64b and the air passage forming section 62b are aligned). The air from which the moist powdered raw material in the mixing container 33 has been scattered adheres to the inner circumferential surface of the recovery air passage F as it passes through the downward air passage F1 and the upward air passage F2 that constitute the recovery air passage F of the steam guide 61, and is recovered.

[0053] Furthermore, a downward air duct F3 and an upward air duct F4 of the recovery air duct F are formed within the recovery duct 64. The air from which the moist powdered raw materials in the mixing container 33 have been scattered passes through the internal space of the steam guide 61 and is then sent into the recovery duct 64, and as it passes through the downward air duct F3 and upward air duct F4 of the recovery air duct F of the recovery duct 64, it adheres to the inner circumferential surface of the recovery air duct F and is recovered. A filter 67 for capturing the moist powdered raw materials is provided in the upward air duct F4 as the downstream portion of the recovery air duct F, and a fan 66 is provided on the downstream side of the air flow of this filter 67. As the air containing the dispersed moist powdered raw material in the mixing container 33 passes through the multiple air ducts (upward and downward air ducts F1-F4) extending vertically through the recovery air duct F, it adheres to the inner circumferential surface of the recovery air duct F and is collected. This makes it difficult for the moist powdered raw material to adhere to the filter 67 disposed downstream, making the filter 67 even less susceptible to clogging caused by the moist powdered raw material adhering to it and solidifying. This allows the moist air to be discharged from the mixing container 33, and prevents the powdered raw material in the powdered raw material container 32 from solidifying due to the moist air inside the mixing container 33. Furthermore, because the filter 67 captures less powdered raw material, the frequency of replacement or maintenance of the filter 67 decreases.

[0054] Furthermore, the recovery airflow duct F is provided with an upward airflow duct F4 at the downstream portion where the air flows, which is formed by turning back the lower end of the downward airflow duct F3, where the air flows from above to below, to form the most downstream upward airflow duct F4, and this most downstream upward airflow duct F4 is provided with a filter 67 and a fan 66. Since the air in the recovery airflow duct F rises up the most downstream upward airflow duct F4 at the downstream portion where the air flows, by turning back the lower end of the downward airflow duct F3, where the air flows from above to below, the moist powdered raw material accumulates at the bottom of the downward airflow duct F3 and is less likely to rise up the most downstream upward airflow duct F4, which makes it less likely for the moist powdered raw material to adhere to the filter 67.

[0055] The filter 67 is disposed in the most downstream upward air duct F4 at a position spaced apart upstream of the fan 66 in a direction in which air flows left to right, intersecting the up-down direction. The air sent into the most downstream upward air duct F4 passes through the entire filter 67, which is disposed at a distance from the fan 66. This allows the entire filter 67 to capture moist powdered raw material, preventing the moist powdered raw material from adhering to only part of the filter 67 and reducing the ventilation function and powdered raw material capture function of the filter 67.

[0056] A partition 22 is provided to separate the interior of the housing 11 into a beverage preparation chamber 20 in which a beverage preparation unit 31, such as a powdered ingredient container 32 and a mixing container 33, is disposed to prepare a beverage, and a machine chamber 21 in which the downstream portion of a recovery air duct F is disposed behind the beverage preparation chamber 20. In this embodiment, a recovery duct 64 is provided in the machine chamber 21 behind the partition 22, in which an upward passage F4 constituting the downstream portion of the recovery duct F is disposed. An opening 65a is formed in a lid 65 of the recovery duct 64 that constitutes the partition 22, and a filter 67 can be inserted through the opening 65a and attached to the upward passage F4. This configuration makes it easy to replace the filter 67. In this embodiment, the filter 67 is detachable into the recovery duct 64 through the opening 65a formed in the lid portion 65 of the recovery duct 64, but this is not limited to this, and the filter 67 may be detachable into the recovery duct 64 from the housing 11 or the partition portion 22 by changing the installation position of the recovery duct 64.

[0057] Next, a collection means 60 according to another embodiment will be described. In the collection means 60 according to another embodiment shown in Fig. 14, the collection air passage F in the collection duct 64 includes four air passages extending vertically and separated by three air passage forming portions 64d. The collection air passage F in the collection duct 64 includes four air passages arranged side by side from the right side, namely, a downward air passage F5 through which air flows from the top to the bottom, an upward air passage F6 which is folded back so as to continue from the lower end of the downward passage F5 and through which air flows from the bottom to the top, a downward air passage F7 which is folded back so as to continue from the upper end of the upward passage F6 and through which air flows from the top to the bottom, and an upward air passage F8 which is folded back so as to continue from the lower end of the downward passage F7 and through which air flows from the bottom to the top.

[0058] Because moist powdered raw material falls through the air, baffles 68 are provided in the downward air ducts F5 and F7, through which air flows from top to bottom, to capture as much moist powdered raw material as possible. By providing the baffles 68 in the downward air ducts F5 and F7, the air snakes left and right as it descends through the downward air ducts F5 and F7. The moist powdered raw material adheres to the inner surfaces of the downward air ducts F5 and F7 and the surfaces of the baffles 68 as it snakes left and right while descending, thereby increasing the efficiency with which the moist powdered raw material is captured. While the baffles 68 are provided only in the downward air ducts F5 and F7 in this embodiment, this is not a limitation, and a baffle 68 may also be provided in the upward passage F6. The baffle 68 is attached to the cover 65, and the baffle 68 can be removed from the recovery air duct F in the casing 64a of the recovery duct 64 by removing the cover 65 and opening the opening 64c of the recovery duct 64. In this way, since the baffle plate 68 is attached from the lid portion 65, it is possible to easily clean off the powder raw material adhering to the baffle plate 68. Note that the baffle plate 68 is not limited to being attached to the lid portion 65, and the baffle plate 68 may be attached inside the casing 64a in the recovery duct 64.

[0059] A filter 67 is provided in the most downstream upward air passage F8, and the filter 67 is arranged in the most downstream upward air passage F8 so that air flows left and right, intersecting the vertical direction. The filter 67 is arranged upstream of and spaced from the fan 66, allowing air to pass through the entire filter 67, not just the part of the filter 67 facing the fan 66. The lid 65 also has an intake port 65b formed in the lid 65 near the intake portion of the fan 66, located upstream of the filter 67 in the upward passage F8 in the air flow direction, for drawing air from within the beverage preparation chamber 20. This allows moisture and powdered ingredients that leak into the beverage preparation chamber 20 during beverage preparation to be collected, thereby keeping the beverage preparation chamber 20 clean.

[0060] 15 and 16, in the recovery means 60 of another embodiment, a guide member 69 that guides air forward to the outlet 61c of the steam guide 61 (inlet 64b of the recovery duct 64) is provided instead of the air passage forming portion 62b provided on the lid portion 62 of the steam guide 61. The guide member 69 prevents the humid air that has flowed into the steam guide 61 from inside the mixing container 33 from flowing straight to the outlet 61c (inlet 64b of the recovery duct 64), and guides the air to detour to the front side of the outlet 61c (inlet 64b of the recovery duct 64). Even in this case, the humid powdered raw material can be attached to the inner circumferential surface of the steam guide 61 from the air into which the humid powdered raw material is scattered, and the humid powdered raw material scattered in the air can be recovered.

[0061] In these embodiments, the recovery means 60 includes both a steam guide (second recovery duct) 61 and a recovery duct (first recovery duct) 64, but this is not limited thereto, and the recovery means 60 may include only one of the steam guide (second recovery duct) 61 and the recovery duct (first recovery duct) 64. Furthermore, the recovery air duct F may include one or more upward passages and one or more downward passages.

[0062] 10...beverage supply device, 11...housing, 20...beverage production chamber, 21...machine chamber, 22...partition section, 32...powdered raw material container, 33...mixing container, 40...raw water supply section (hot water supply section), 50...raw water supply section (water supply section), 60...recovery means, 61...second recovery duct (steam guide), 62b...air path forming section, 64...first recovery duct (recovery duct), 65...lid section (partition section), 65b...intake port, 66...fan, 67...filter, 68...baffle plate, F...recovery air path, F1, F3, F5, F7...downward passage, F2, F4, F6, F8...upward passage.

Claims

1. a mixing container for mixing powdered ingredients for a beverage supplied from the powdered ingredient container and raw water for a beverage supplied from the raw water supply unit within the housing to produce a beverage; a recovery means for recovering the moist powdered raw material by passing air through a recovery air passage through which the moist powdered raw material is scattered when the powdered raw material and the raw material water are mixed in the mixing container; a fan that blows air into the recovery air duct, the air scattering the moist powdered ingredients in the mixing container, The recovery air passage has a folded structure in which a plurality of air passages extending vertically are folded back at the upper or lower part so as to be continuous, and includes an upward air passage which is formed at the most downstream side by folding back a lower end of a downward air passage in which air flows from above to below, A beverage supply device characterized in that a filter is arranged in the most downstream upward air duct so that air flows in a direction that intersects the vertical direction, and the fan is arranged at a position spaced apart downstream of the filter at the top of the most downstream upward air duct.

2. The beverage supply device according to claim 1, the collection means includes a first collection duct in which at least a downstream portion of the collection airflow duct is disposed, The beverage supply device is characterized in that the filter and the fan are disposed downstream of the recovery air passage in the first recovery duct.

3. 3. The beverage supply device according to claim 1, the recovery means includes a second recovery duct for receiving air from the mixing vessel; The beverage supply device is characterized in that the recovery air passage is formed within the second recovery duct.

4. The beverage supply device according to any one of claims 1 to 3, a partition section that divides the interior of the housing into a beverage preparation chamber in which at least the powdered raw material container and the mixing container are disposed and in which a beverage is prepared, and a machine chamber in which at least a downstream portion of the recovery air duct is disposed behind the beverage preparation chamber, A beverage supply device characterized in that the filter can be attached by inserting it through the housing or the partition.

5. The beverage supply device according to any one of claims 1 to 4, a partition section that divides the interior of the housing into a beverage preparation chamber in which at least the powdered raw material container and the mixing container are disposed and in which a beverage is prepared, and a machine chamber in which at least a downstream portion of the recovery air duct is disposed behind the beverage preparation chamber, The beverage supply device is characterized in that the partition portion is formed with an inlet port near the inlet portion of the fan for sucking air from within the beverage preparation chamber.

6. The beverage supply device according to any one of claims 1 to 5, A beverage supply device characterized in that a baffle plate for causing the air flow to meander is provided in the recovery air passage.

7. 7. The beverage supply device according to claim 6, A beverage dispenser characterized in that the baffle plate is provided only in the downward air passage through which air flows from above to below the recovery air passage.

8. 8. The beverage supply device according to claim 6 or 7, The beverage supply device is characterized in that the recovery air passage is formed in a casing having an opening formed on one horizontal side thereof that is opened and closed by a lid, and the baffle plate is attached to the lid.

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