JPH0928571A - Automatic tea supplying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic tea supplying machine in which the life of a control equipment for regulating the supplying quantity of hot water or cold water can be extended, and hot tea can be regularly supplied in the supply of tea. SOLUTION: This automatic tea supplying machine is provided with a hot water tank 1 for storing hot water, a cold water tank for storing cold water, a canister for housing a powdery starting material for tea, and a mixing bowl for mixing the powdery starting material supplied from the canister with the hot water supplied from the hot water tank 11 or the cold water supplied from the cold water tank. A deformable flexible pipe 2 connected to a discharge side communicating pipe 4 is fitted in the hot water tank, and a float 1 is arranged near an intake port formed on the end part of the flexible pipe 2, and floated on the hot water in the hot water tank 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic tea dispenser for providing tea or the like.

[0002]

2. Description of the Related Art In recent years, an automatic tea supply machine which stores hot water or cold water in a tank and mixes powdered tea with hot water or cold water to supply tea has been widely used in offices and the like.

Therefore, a conventional automatic tea supply machine will be described with reference to the drawings. FIG. 10 is a schematic diagram of a conventional automatic tea feeding machine, FIG. 11 is a schematic system diagram of a conventional pumping type automatic tea feeding machine, and FIG. 12 is a schematic system diagram of a conventional direct water supply type automatic tea feeding machine. Is.

The conventional automatic tea dispenser main body 63 is constructed as follows. 27 is a water supply joint, 29 is a filter for removing dust, 30 is a check valve for preventing reverse flow of water,
31 is a cold water side water supply solenoid valve for supplying water to the cold water tank, 3
2 is a hot water side water supply solenoid valve for supplying water to the hot water tank, 22
Is a first water supply side communication pipe for supplying water to the cold water tank, 8 is a water supply side communication pipe for supplying water to the hot water tank, 20 is a cold water tank for storing cold water, and 23 is water supplied to the cold water tank. Baffle plate that makes it difficult to mix with the chilled water, 17 is a water level sensor that detects the water level of cold water, 39 is a cooler that cools the water in the cold water tank, 38 is a water temperature sensor that detects the water temperature of the cold water tank, and 11 is hot water. Hot water tank to store,
10 is a baffle that makes it difficult for the water supplied to the hot water tank to mix with hot water, 5 is a water level sensor that detects the water level of the hot water tank, 33 is a hot water temperature sensor that detects the hot water temperature of the hot water tank, and 9 is hot water A heater to maintain the temperature of the hot water,
34 is a temperature rise prevention device that shuts off the heater when the temperature in the hot water tank rises above the temperature, 48 is a cold water solenoid valve for supplying cold water, 49 is a discharge pipe for discharging cold water, 40 is an overflow pipe on the cold water side, 41 Is a drain pipe used when draining water in the cold water tank, 42 is a drain valve used when draining water in the cold water tank, 46 is a solenoid valve for supplying hot water, 47 is a discharge pipe for discharging hot water, 35 is a hot water overflow pipe, 36 is a drain pipe used when draining hot water from a hot water tank, 37 is a drain valve used when draining hot water from a hot water tank, 16 is a cold beverage solenoid valve for supplying cold beverage 3 is a hot beverage solenoid valve for supplying hot beverage, 4 and 21 are discharge side communication pipes, 44 is a collecting pipe connecting cold water side and hot water side discharge side communication pipes, and 45 is cold water or hot water. Discharge pipe to be supplied to the mixing bowl, 53 storage and supply the powder material canister, 5
6 is a powdered raw material for tea or coffee, 55 is a screw for pushing out the powdered raw material 56, 54 is a raw material motor for operating the screw, 52 is a stirring blade for mixing the powdered raw material with cold water or hot water, which acts as a valve while rotating. Is. Reference numeral 51 is a mixing ball, 50 is a mixing motor for rotating a stirring blade, 12 is control means for instructing the operation of a series of automatic tea supply machines, and 57 is an operation panel. The 62 powder tea supply unit is a cold beverage solenoid valve 16,
The hot beverage solenoid valve 3, the communicating pipes 4, 21, the collecting pipe 44, the discharge pipe 45, the canister 53, the powder raw material 56, the screw 55, the raw material motor 54, the stirring blade 52, the mixing ball 51, the mixing motor 50, etc. Normally, three units are arranged in the main body 63 to supply three kinds of cold beverages, three kinds of hot beverages and eight kinds of cold water and hot water.

Next, the general configuration of the system is shown in FIGS.
2 will be described. The water supply direct connection type shown in FIG. 12 has the following configuration. 78 is a water supply pipe, 75 is a drainage receiver,
76 is a drain pipe, 79 is a drain trap, and water is a water pipe 7.
8 to the main body 63 via the water supply joint 27. For drainage, each drainage is temporarily received by the drainage receiver 75, and the drainage pipe 7
It is drained to the drain trap 79 via 6. The type of pumping up from the water tank shown in FIG. 11 has the following configuration. Reference numeral 70 denotes a lower body, which is made up of the components described below and serves as a pedestal for the body 63. Reference numeral 71 is a water tank, 73 is a pump, 72 and 74 are communication pipes, 75 is a drainage receiver, 76 is a drainage pipe, and 77 is a drainage tank.
The water pumped in 1 is supplied to the main body 63 through the water supply joint 27 by operating the pump 73 through the communication pipes 72 and 74. For drainage, once receive each drainage 7
5 and is drained to the drain tank 77 via the drain pipe 76. In this case, the operation command of the pump 73 is issued from the electrically connected controller 12.

The operation panel 57 includes a hot button 58, a cold switch 59, a cold water button 61, and a hot water switch 60.
It is composed of

The operation of the entire apparatus will be described. If you want to drink hot tea, set the cup 64 on the body 63,
When the hot button 58 of the operation panel 57 is pressed, the hot beverage electromagnetic valve 3 is opened and the hot water in the hot water tank 11 is supplied to the mixing ball 51 through the discharge side communication pipe 4, the collecting pipe 44 and the discharge pipe 45. Almost at the same time when the hot water starts to enter the mixing ball 51, the mixing motor 50 rotates the stirring blade 52 so that the hot water does not fall into the cup 64. In addition, 1/3 of the amount of hot water on the mixing ball 51
When it is supplied, the raw material motor 54 is driven to rotate the screw 55 to drop the powder raw material 56 stored in the canister 53 into the mixing ball 51 by a predetermined amount. After the supply of the predetermined amount of hot water and the predetermined amount of the powder raw material 56 is completed, the mixing by the mixing motor 50 and the stirring blade 52 is continued for a while to mix the hot water and the powder raw material 56. When the mixing is completed, the mixing motor 50 and the stirring blade 52 are stopped, and the tea in the mixing ball 51 falls by its own weight and is supplied to the cup 64. Next, the water supply to the hot water tank 11 will be described. Hot beverage solenoid valve 3
When a predetermined amount of hot water is supplied from the hot water tank 11, the water level of the hot water in the hot water tank 11 drops, the water level sensor 5 detects it, and the hot water side water supply solenoid valve 32 opens and water is supplied to the water supply joint 27, the filter 29, and the reverse. It is supplied to the hot water tank 11 via the stop valve 30 and the water supply pipe 28. When water is supplied to the hot water tank 11, the water level of the hot water rises and when the water level reaches a predetermined level, the water level sensor 5 detects it and the hot water side water supply solenoid valve 32 is closed. The baffle plate 10 prevents the water supplied to the hot water tank 11 from directly mixing with the hot water in the hot water tank 11. Further, when the temperature of the hot water falls below a predetermined temperature due to the water being supplied into the hot water tank 11, the hot water temperature sensor 33 detects it and the heater 9 heats the hot water to a predetermined temperature. When the temperature of the hot water returns to a predetermined temperature, the hot water temperature sensor 33 detects it and the heater 9 stops heating. The series of operations are all controlled by the controller 12.

When drinking cold tea, a person who wants to drink cold tea sets the cup 64 on the main body 63 and presses the cold switch 59 on the operation panel 57 to open the cold beverage solenoid valve 16 and cool water in the cold water tank 20. Is supplied to the mixing ball 51 through the discharge side communication pipe 21, the collecting pipe 44, and the discharge pipe 45. Almost at the same time as the cold water begins to enter the mixing ball 51, the mixing motor 50 rotates the stirring blade 52 to prevent the cold water from falling into the cup 64. In addition, a certain amount of cold water is applied to the mixing ball 51.
When about / 3 is supplied, the raw material motor 54 is driven to rotate the screw 55 and drop the powder raw material 56 stored in the canister 53 into the mixing ball 51 by a predetermined amount. After the supply of the predetermined amount of cold water and the predetermined amount of the powder raw material 56 is completed, the mixing by the mixing motor 50 and the stirring blade 52 is continued for a while to mix the cold water and the powder raw material 56. Mixing motor 50 when mixing is completed
Then, the stirring blade 52 stops, and the tea in the mixing ball 51 falls by its own weight and is supplied to the cup 64. Next, the water supply to the cold water tank 20 will be described. When the cold beverage solenoid valve 16 is opened and a predetermined amount of cold water is supplied from the cold water tank 20, the water level of the cold water in the cold water tank 20 falls, the water level sensor 17 detects it, and the cold water side water supply solenoid valve 31 opens and the water supply joint 27 The water is supplied to the cold water tank 20 via the filter 29, the check valve 30, and the water supply side communication pipe 22. When water is supplied to the cold water tank 20, the water level of the cold water rises and when the water level reaches a predetermined level, the water level sensor 17 detects it and the cold water side solenoid valve 31 is closed. The baffle plate 23 prevents the water supplied to the cold water tank 20 from directly mixing with the cold water in the cold water tank 20. When the temperature of the cold water rises above a predetermined temperature due to the supply of water into the cold water tank 20, the water temperature sensor 38 detects it and the cooler 39 cools the cold water to a predetermined temperature. When the temperature of the cold water returns to a predetermined temperature, the water temperature sensor 38 detects it and the cooler 39
Stop cooling. The series of operations are all controlled by the controller 12.

When cold water is desired, a cup 6 is placed on the main body 63.
4 is set and the cold water button 61 on the operation panel 57 is pressed, the cold water solenoid valve 48 opens and the cold water button 6 is discharged from the discharge pipe 49.
Cold water is continuously supplied to the cup 64 while pressing 1, and if hot water is desired, set the cup 64 on the main body 63 and press the hot water switch 60 on the operation panel 57 to open the hot water solenoid valve 46 and the discharge pipe. Hot water is continuously supplied to the cup 64 while pressing the hot water switch 60 from 47. The supply of water to the cold water tank 20 and the hot water tank 11 and the temperature control of cold water and hot water perform the same operation as when supplying cold tea or hot tea. The series of operations are all controlled by the controller 12.

[0010]

In the automatic tea dispenser having the above-mentioned contents, the hot water tank is supplied with water by supplying 1-2 hot drinks to the hot water tank. There is. For this reason, the number of operations of the water level solenoid valve on the hot water side and the water level sensor installed in the hot water tank is 2-3 times as many as the number of operations of other devices, resulting in a problem of life. At the same time, there is a structural problem that the hottest hot water is not used because the hot beverage solenoid valve and the like are located 50 to 100 mm below the hot water level in the hot water supply. Similarly, for supplying water to the cold water tank, if 1-2 cold drinks are supplied, 1-2 cups of water are supplied to the cold water tank. For this reason, the number of operations of the water level solenoid installed in the cold water side water supply solenoid valve and the cold water tank was 2-3 times as many as the number of operations of other devices, and the service life was a problem.

Therefore, the present invention is to provide an automatic tea dispenser capable of extending the life of a control device for adjusting the supply amount of hot water or cold water and constantly supplying hot tea when supplying tea. To aim.

[0012]

In order to solve the above problems, an automatic tea supply machine of the present invention is provided with a deformable universal pipe connected to a discharge side communication pipe in a hot water tank.
It is characterized in that a float is provided near the water intake at the end of the free pipe to float in the hot water in the hot water tank.

Desirably, the flexible tube is a flexible tube.
It is preferable that the free tube is a vertically extending telescopic telescopic slide tube.

A water level sensor is provided in the hot water tank, and a hot water side water supply valve for adjusting the amount of water supplied to the hot water tank is provided in the hot water water supply side communication pipe, and the hot water side water supply is provided by a detection signal from the water level sensor. Suitably it is provided with control means for controlling the valve.

It is desirable that the water level sensor is a float sensor that detects the level by moving the float up and down.

Preferably, the water level sensor is a pressure sensor. The water level sensor is preferably a laser sensor.

It is desirable that the water level sensor is an ultrasonic sensor. A cold water level sensor is installed in the cold water tank, and a cold water side water supply valve for adjusting the amount of water supplied to the cold water tank is installed in the cold water water supply side communication pipe, and the cold water side is detected by the detection signal from the cold water water level sensor. Suitably it is provided with control means for controlling the water supply valve.

It is preferable that the cold water level sensor is a float sensor that detects the level by moving the float up and down.

The cold water level sensor is preferably a pressure sensor. The water level sensor for cold water is preferably a laser sensor.

It is desirable that the cold water level sensor is an ultrasonic sensor.

[0021]

[Function] A deformable free pipe connected to the discharge side communication pipe is provided in the hot water tank, and a float is provided near the water intake at the end of the free pipe to float in the hot water in the hot water tank. As the water level changes, the water intake moves up and down, allowing the water intake to always follow the position of hot water.

Since it is a flexible tube, a free tube can be easily constructed. Since the free pipe is a vertically extending telescopic slide tube, the size of the hot water tank can be reduced.

Since the water level sensor, the warm water side water supply valve and the control means are provided, the vertical fluctuation range of the universal pipe can be increased.

Since the water level sensor and the cold water level sensor are float sensors, they are inexpensive.

Since the water level sensor and the water level sensor for cold water are pressure sensors, there are no mechanical parts and there are few failures.

Since the water level sensor and the cold water level sensor are laser sensors, the detection accuracy is good.

Since the water level sensor and the cold water level sensor are ultrasonic sensors, detection accuracy is good.

Since the cold water level sensor, the cold water side water supply valve, and the control means for controlling the water supply amount are provided, the fluctuation range of the water level of the cold water can be increased.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An automatic tea dispenser according to an embodiment of the present invention will be described below with reference to the drawings. 1 is a schematic view of a hot water tank of an automatic tea dispenser in a first embodiment of the present invention, FIG. 2 is a schematic view of a nested slide tube of an automatic tea dispenser in a second embodiment of the present invention, FIG. Is a schematic view of a hot water tank of an automatic tea dispenser according to a third embodiment of the present invention, FIG. 4 is a schematic view of a hot water tank of an automatic tea dispenser according to a fourth embodiment of the present invention, and FIG. 5 is a schematic view of the present invention. It is a schematic diagram of a warm water tank of an automatic tea supply machine in a 5th example. Here, the same reference numerals as those used in the description of the conventional example are basically the same also in the embodiment of the present invention, and therefore the description will be omitted to the conventional example.

As shown in FIG. 1, in the first embodiment, the hot water tank 11 is connected to the discharge side communication pipe 4 provided with the hot beverage solenoid valve 3, and is also connected to the discharge side communication pipe 4 in a modified form. A possible free pipe 2 is attached to the hot water tank 11 in a cantilevered state. An intake is provided at the end of the universal pipe 11, and the float 1 is attached near the intake. Therefore, when hot water is stored in the warm water tank 11, the free pipe 2 floats near the water surface because of the float 1. Therefore, the water intake can always collect hot water at the highest temperature near the liquid surface.
The material of the flexible tube 2 may be either resin or metal, but it must be flexible enough to follow the movement of the float 1. It may be made of a flexible resin, or may have a structure in which a metal ring is connected so as to extend and contract.

Further, in the first embodiment, the water level sensor 5 is a float sensor, and two water levels, a high water level 6 and a low water level 7, set in the warm water tank 11 are used as the high water level float 5- of the float sensor. 1 and low level float 5-
2 is to detect each. The hot beverage solenoid valve 3 and the water level sensor 5 are electrically controlled by the control means 1 respectively.
Connected to 2. The control means 12 controls the hot water side water supply solenoid valve 32 by the detection signal from the water level sensor, controls the hot beverage solenoid valve 3 and controls the heater 9 based on the detection signal of the hot water temperature sensor 33.

Next, the operation of the automatic tea dispenser of the first embodiment will be described. Hot switch 58 on operation panel 57
In response to this, the control means 12 opens the hot beverage solenoid valve 3 for a certain period of time, and supplies a certain amount of hot water in the hot water tank 11 to the mixing ball 51. Inside the hot water tank 1
The amount of hot water in 1 is reduced by this fixed amount, and the water level is lowered. However, while the water level is between the high water level 6 and the low water level 7, the control means 12 controls the hot water tank 11 even if the amount of hot water decreases.
Do not water inside. When it is detected by the low water level float 5-2 of the water level sensor 5 that the hot water has been supplied to the low water level 7 by supplying the hot water 5 to 6 times, the control means 12 opens the hot water side water supply solenoid valve 32 to supply the hot water. Water is hot water supply side communication pipe 8
And is supplied to the hot water tank 11. Further, in this embodiment, the deformable universal pipe 2 and the foot 1 are provided in the hot water tank 11 in order to allow a wide fluctuation range of the water level above and below the high water level 6 and the low water level 7. Therefore, it is possible to follow the water intake in the hot water tank 11,
Since the temperature near the surface of the bath is the highest, hot tea can always be supplied. Further, since the fluctuation range of the water level above and below the water level can be made large, it is not necessary to drive the water level sensor 5 and the control equipment such as the hot water side water supply solenoid valve 32 every time hot water is taken out from the hot water tank 11, and the water level sensor 5 and the hot water side The life of the water supply solenoid valve 32 and the like can be extended.

By the way, in this embodiment, the heater 9
Is provided near the bottom surface of the hot water tank 11. This is because, considering the convection motion of the hot water in the hot water tank 11 when the heater 9 is heated, the temperature of the hot water in the hot water tank 11 tends to be uniform when the heater 9 is arranged along the bottom surface of the hot water tank 11. . Even when water is supplied through the hot water supply side communication pipe 8, the hot water in the hot water supply side communication pipe 8 is prevented from immediately mixing with the hot water in the hot water tank 11 and lowering the overall hot water temperature. A baffle is provided at the entrance to the tank 11.

Next, a second embodiment shown in FIG. 2 will be described. In this embodiment, the free tube 2 is composed of a telescopic slide tube 13 which is vertically extendable. This nested slide tube 13 is provided with a plurality of cylinders whose diameters are gradually changed, and is constructed by inserting them one after another in a nested manner. A sealing material is provided at the connecting portion between the cylinders to seal the both. The upper end surface of the outermost cylinder having the largest diameter serves as the water intake port of the nested slide tube 13, and the float 1 is attached in the vicinity thereof. Therefore, when the surface of the hot water rises, the telescopic slide tube 13 extends telescopically as shown in FIG. 2, but when the surface of the hot water goes down, all the cylinders are folded and accommodated in one as shown in FIG. It contracts. The nested slide tube 13 can be made of a stainless steel material and is not only excellent in durability and hygiene, but is also vertically mounted so that the volume occupied by the free tube 2 in the hot water tank 11 can be increased. Can be made smaller. As a result, the hot water tank 11 itself can be made compact.

The third embodiment shown in FIG. 3 will be described. In this embodiment, a laser sensor 14 is used as the water level sensor 5 of the first embodiment. Other configurations are similar to those of the first embodiment, and therefore detailed description will be omitted for the first embodiment. The laser sensor 14 measures the distance to the molten metal surface using the interference of the laser, and is mounted on the hot water tank 11 in the molten metal surface direction. When the water level sensor 5 is provided with a mechanical operation part, durability is often determined by this part. However, since the laser sensor 14 does not have the mechanical operation part, the laser sensor 14 has few failures and is highly accurate. The level can be measured.

In the fourth embodiment shown in FIG. 4, the water level sensor 5 of the first embodiment is replaced with a water pressure sensor 15. The water pressure sensor 15 is attached to the bottom surface of the hot water tank 11 and detects the water pressure in the hot water tank 11 using a strain gauge or the like.
Since it has no mechanical operation parts, it has few failures, has a long life, is inexpensive, and has good measurement accuracy.

The fifth embodiment shown in FIG. 5 is a water level sensor 5.
Instead of the above, an ultrasonic sensor 16 is provided. The ultrasonic sensor 16 has a high water level 6 on the side surface of the hot water tank 11.
And the low water level 7 respectively. When the surface of the molten metal rises and reaches the position of high water level 6, the ultrasonic sensor 16 provided at the high position 6 detects this, and when the surface of the molten metal descends and reaches the low position 7, it is provided at the low position 7. The ultrasonic sensor 16 detects this. Since there is no mechanical operation part, accurate measurement is possible.

Next, the cold water tank in the embodiment of the present invention will be described. FIG. 6 is a schematic view of a cold water tank of an automatic tea feeding machine according to a sixth embodiment of the present invention, and FIG. 7 is a schematic view of a cold water tank of an automatic tea feeding machine according to a seventh embodiment of the present invention.
FIG. 8 is a schematic view of a cold water tank of an automatic tea supply machine according to an eighth embodiment of the present invention.

A sixth embodiment shown in FIG. 6 will be described.
A cold water supply side communication pipe 22 and a discharge side communication pipe 21 are connected to the cold water tank 20. Water supply side communication pipe 22 for cold water
Is formed so as to extend to the upper part in the cold water tank 20, and a baffle plate 23 is provided near the discharge port.
This baffle plate 23 is for preventing the temperature of the cold water from suddenly rising when mixed immediately because the temperature of the inflowing water is room temperature. A discharge side communication pipe 21 for supplying cold water to the mixing ball 51 is connected to a lower portion of the cold water tank 20. This discharge side communication pipe 21
A cold beverage solenoid valve 16 which is a discharge valve for adjusting the supply amount of cold water is provided near the connection with the cold water tank 21. Further, a cold water level sensor 17 is provided inside the cold water tank 20. The cold water level sensor 17 of the present embodiment is a float sensor, and the high water level 18 and the low water level 19 set in the cold water tank 20 are respectively the high water level float 17-1 and the low water level float 17-2 of the float sensor. It is something to detect. The cold beverage solenoid valve 16 and the cold water level sensor 17 are electrically connected to the control means 12, respectively. Control means 12
Controls the cold water side water supply solenoid valve 31 according to the detection signal from the cold water level sensor 17, and the cold beverage solenoid valve 1
6 and controls the cooler 39 based on the detection signal of the water temperature sensor 38.

The operation of the cold water tank 20 will be described. When the cold switch 59 on the operation panel 57 is pressed,
In response to this, the control means 12 opens the cold beverage solenoid valve 16 for a certain period of time to supply cold water from the discharge side communication pipe 21.
If this is repeated 5 to 6 times and cold water is used, high water level 1
The water level drops from 8 to a low water level of 19. The low water level float 17-2 of the cold water level sensor 17 detects this. In response to this detection signal, the control means 12 opens the cold water side water supply solenoid valve 31, whereby the cold water water supply side communication pipe 2 is provided.
Water is supplied from 2 to the cold water tank 20. When the water level reaches the high water level 18, the high water level float 17-1 detects this and the control means 12 closes the cold water side water supply solenoid valve 31.

According to the sixth embodiment, since the cold water level sensor 17, the cold beverage solenoid valve 16 and the control means 12 for controlling the water supply amount are provided, the fluctuation range of the cold water level can be increased. Therefore, it is possible to reduce the number of times of water supply, and prevent these control devices from frequently operating and failing. Further, since the discharge side communication pipe 21 for supplying the cold water to the mixing ball 51 is connected to the lower portion of the cold water tank 20, the cold water having the lowest temperature can be supplied. Since the cold water level sensor 17 is a float sensor, it is inexpensive.

Next, a seventh embodiment shown in FIG. 7 will be described. In this embodiment, the float sensor of the cold water level sensor 17 of the sixth embodiment is a laser sensor 24. Detailed description of other configurations will be given to the sixth embodiment. If the cold water level sensor 17 has a mechanical operation part, this part determines the durability of the whole. However, since the laser sensor 24 does not have the mechanical operation part, there are few failures and the level of accuracy is high. A measurement can be made. The laser sensor 24 is mounted on the cold water tank 20 facing the water surface.

In the eighth embodiment shown in FIG. 8, the float sensor of the cold water level sensor 17 of the sixth embodiment is replaced with a water pressure sensor 25. The water pressure sensor 25 is attached to the bottom surface of the cold water tank 20,
The water pressure within 0 is detected. It has a long life, is inexpensive, and has good measurement accuracy.

In the ninth embodiment shown in FIG. 9, an ultrasonic sensor 26 is provided in place of the water level sensor 17 for cold water. The ultrasonic sensors 26 are provided at the positions of the high water level 18 and the low water level 19 on the side surface of the cold water tank 20, respectively. When the water level rises and reaches the high water level 18,
The ultrasonic sensor 26 at the high position 18 detects this, and when the water level drops and reaches the low position 19, the ultrasonic sensor 26 at the low position 19 detects this. Since there is no mechanical operation part, accurate measurement is possible.

[0045]

As can be seen from the above description, the automatic tea dispenser of the present invention can extend the life of the control device that adjusts the amount of water supplied to the hot water tank or the cold water tank, and when supplying tea. Can always be supplied with hot tea.

A deformable free pipe connected to the discharge side communication pipe was provided in the hot water tank, and a float was provided near the water intake at the end of the free pipe to float the hot water in the hot water tank. As the water level changes, the water intake moves up and down, and hot water can always be supplied with a simple structure. Further, since the water level sensor, the warm water side water supply valve, and the control means are provided, the vertical fluctuation range of the universal pipe can be increased.

[Brief description of drawings]

FIG. 1 is a schematic view of a hot water tank of an automatic tea dispenser according to a first embodiment of the present invention.

FIG. 2 is a schematic view of a nested slide tube of an automatic tea dispenser according to a second embodiment of the present invention.

FIG. 3 is a schematic view of a hot water tank of an automatic tea dispenser according to a third embodiment of the present invention.

FIG. 4 is a schematic view of a hot water tank of an automatic tea dispenser according to a fourth embodiment of the present invention.

FIG. 5 is a schematic view of a hot water tank of an automatic tea dispenser according to a fifth embodiment of the present invention.

FIG. 6 is a schematic view of a cold water tank of an automatic tea dispenser according to a sixth embodiment of the present invention.

FIG. 7 is a schematic diagram of a cold water tank of an automatic tea dispenser according to a seventh embodiment of the present invention.

FIG. 8 is a schematic view of a cold water tank of an automatic tea dispenser according to an eighth embodiment of the present invention.

FIG. 9 is a schematic view of a conventional automatic tea supply machine.

FIG. 10 is a schematic system diagram of a conventional automatic tea supply machine.

FIG. 11 is a schematic system diagram of a conventional dispenser type automatic tea supply machine.

FIG. 12 is a schematic system diagram of a conventional automatic tea supply machine directly connected to a water supply.

[Explanation of symbols]

 1 float 2 universal pipe 3 hot beverage solenoid valve 4,21 discharge side communication pipe 5 water level sensor 8 hot water supply side communication pipe 11 hot water tank 12 control means 16 cold beverage solenoid valve 17 cold water level sensor 20 cold water tank 22 cold water supply water Side communication pipe 31 Cold water side water supply solenoid valve 32 Hot water side water supply solenoid valve 45 Discharge pipe 51 Mixing ball 63 Main body

Claims (13)

[Claims] 1. A hot water tank for storing hot water, a cold water tank for storing cold water, a canister containing a powdered raw material such as tea, a hot water tank and a cold water tank are respectively connected by discharge side communication pipes, and A mixing ball that mixes the powder raw material supplied from the canister with the hot water supplied from the hot water tank or the cold water supplied from the cold water tank is provided, and in the hot water tank, a deformation connected to the discharge side communication pipe is provided. An automatic tea dispenser characterized in that a free flexible tube is provided, and a float is provided near the water intake at the end of the flexible tube to float in the hot water in the hot water tank. 2. The automatic tea dispenser according to claim 1, wherein the flexible tube is a flexible tube. 3. The automatic tea dispenser according to claim 1, wherein the universal tube is a vertically extending telescopic telescopic slide tube. 4. A water level sensor is provided in the hot water tank, and a hot water side water supply valve for adjusting the amount of water supplied to the hot water tank is provided in the hot water water supply side communication pipe, and a detection signal from the water level sensor is provided. A control means for controlling the hot water side water supply valve is provided by means of.
An automatic tea dispenser according to any one of 1. 5. The automatic tea dispenser according to claim 4, wherein the water level sensor is a float sensor that detects a level by vertical movement of the float. 6. The automatic tea dispenser according to claim 4, wherein the water level sensor is a pressure sensor. 7. The automatic tea dispenser according to claim 4, wherein the water level sensor is a laser sensor. 8. The automatic tea dispenser according to claim 4, wherein the water level sensor is an ultrasonic sensor. 9. A cold water water level sensor is provided in the cold water tank, and a cold water side water supply valve for adjusting the amount of water supplied to the cold water tank is provided in the cold water water supply side communication pipe. 9. The automatic tea dispenser according to any one of claims 1 to 8, further comprising control means for controlling the cold water side water supply valve according to the detection signal. 10. The automatic tea dispenser according to claim 9, wherein the water level sensor for cold water is a float sensor that detects a level by vertical movement of the float. 11. The automatic tea dispenser according to claim 9, wherein the cold water level sensor is a pressure sensor. 12. The automatic tea dispenser according to claim 9, wherein the cold water level sensor is a laser sensor. 13. The automatic tea dispenser according to claim 9, wherein the cold water level sensor is an ultrasonic sensor.