JPH119464A - Hot water supplying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid the reduction in hot water temperature within a hot water tank in a time band where hot water is concentratively discharged to avoid the frequent discharge stop of hot water by stopping the water feed when the level within the hot water tank is lower than a prescribed level, and setting a discharge mode for allowing the discharge of hot water from the hot water tank for a prescribed number of frequency. SOLUTION: When discharge of hot water is highly frequently repeated, and the level of hot water is lowered to a level where a float switch 8 is switched from ON to OFF at the point of time the hot water temperature within a hot water tank 2 is lower than a prescribed value T1, a control device stops the water feed to the hot water tank 2, adds 1 to the count number of a built-in counter, and judges whether the count number of the counter is less than a prescribed value N or not. When the count number is less than the prescribed value N, the control device judges that the level of hot water is higher than the mounting position of a discharge pipe 5 so that hot water can be discharged in the next use (sale), and allows the discharging operation of hot water. On the other hand, when the count number reaches the prescribed value N, water feed to the hot water tank 2 is started.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cup-type beverage vending machine, a noodle vending machine, a tea dispenser, etc. for mixing food and hot water, or adding hot water to the food and providing the cooked food. The present invention relates to a hot-water supply device used for:

[0002]

2. Description of the Related Art Conventionally, a hot water supply device used for a cup-type beverage vending machine, a noodle vending machine, a tea dispenser, etc., conventionally controls the temperature of hot water in a hot water tank by detecting a temperature with a temperature sensor and heating with a heater. The water level in the hot water tank is controlled by water level detection by a float switch and water supply by a water supply solenoid valve, and when the hot water temperature in the hot water tank is equal to or higher than a predetermined temperature, discharge of hot water from the hot water tank is permitted. When the water level in the tank falls below the water level at which the float switch switches from ON to OFF, water is supplied to the hot water tank until the float switch turns ON, and when the hot water temperature in the hot water tank falls below the predetermined temperature, the hot water temperature rises to the predetermined temperature. The discharge of hot water from the hot water tank was stopped.

[0003]

In hot water supply devices used in conventional cup-type beverage vending machines, noodle vending machines, tea machines, etc., sales and provision of food materials are repeated at a high frequency. If the discharge is repeated at a high frequency, the water level in the hot water tank will drop and the float switch will be turned off
Switching to the hot water tank and the hot water tank are frequently repeated, the temperature of the hot water in the hot water tank drops, the discharge of hot water is stopped frequently, and the sale and provision of foodstuffs is stopped frequently, There was a problem that an unresponsive situation occurred. The present invention has been made in view of the above problems,
The temperature of hot water in the hot water tank is controlled by temperature detection by a temperature sensor and heating by a heater, and the water level in the hot water tank is controlled by water level detection by a float switch and water supply by a water supply solenoid valve. If the temperature is equal to or higher than the predetermined temperature, the discharge of hot water from the hot water tank is allowed. If the water level in the hot water tank falls below the water level at which the float switch switches from ON to OFF, water is supplied to the hot water tank until the float switch is turned ON. Cup-type beverage vending machine, noodle vending machine, tea machine configured to stop the discharge of hot water from the hot water tank until the hot water temperature in the inside falls below a predetermined temperature until the hot water temperature rises to the predetermined temperature A hot water supply device used for water supply, etc., in which sales and provision of foodstuffs are concentrated and hot water discharge is not stopped frequently during a time period when hot water discharge is concentrated. An object of the present invention is to provide.

[0004]

In order to solve the above problems, in the present invention, the temperature of hot water in a hot water tank is controlled by temperature detection by a temperature sensor and heating by a heater to float the water level in the hot water tank. Water level detection by the switch and water supply by the water supply solenoid valve are controlled, and if the hot water temperature in the hot water tank is equal to or higher than the predetermined temperature, the discharge of hot water from the hot water tank is allowed. When the water level falls below the water level that switches to OFF, water is supplied to the hot water tank until the float switch is turned on. When the hot water temperature in the hot water tank falls below the predetermined temperature, the discharge of hot water from the hot water tank is stopped until the hot water temperature rises to the predetermined temperature. A hot water supply device configured to perform the operation when the water level in the hot water tank falls below the water level at which the float switch switches from ON to OFF. In without water in the hot water tank, to provide a water heater wherein the predetermined number of times, the discharge mode to allow the discharge of hot water from the hot water tank is set in advance. In the hot water supply device according to the present invention, the sales mode and the supply of foodstuffs are concentrated, and the discharge mode is set such that the water level in the hot water tank is equal to or lower than the water level at which the float switch switches from ON to OFF during the time period when the discharge of hot water is concentrated. In this case, by switching to a mode that permits the discharge of hot water from the hot water tank a predetermined number of times without supplying water to the hot water tank, it is possible to avoid a drop in the temperature of hot water in the hot water tank and stop frequent discharge of hot water. Can be avoided.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A hot water supply apparatus according to an embodiment of the present invention will be described. As shown in FIG. 1, the hot water supply device 1 according to the present embodiment includes a hot water tank 2. A water supply pipe 3 is connected to the top of the hot water tank 2. An electromagnetic valve 4 is provided on the way of the water supply pipe 3. A water discharge pipe 5 is connected to the bottom of the hot water tank 2. An electromagnetic valve 6 is provided on the way of the water discharge pipe 5. A float 7 is provided in the hot water tank 2. A rod 7 a fixed to the float 7 extends upward through the ceiling wall of the hot water tank 2 and contacts the float switch 8. A heater 9 and a temperature sensor 10 are arranged at the bottom of the hot water tank 2. Solenoid valves 4, 6, heater 9
Is controlled by a control device (not shown). A water level signal from the float switch 8 and a temperature signal from the temperature sensor 10 are input to a control device (not shown). The hot water supply device 1 according to the present embodiment is a cup-type beverage vending machine, a noodle vending machine, a tea vending machine that mixes food and hot water, or adds hot water to the food, and sells and provides the cooked food. It is built into the machine.

The operation of the hot water supply apparatus 1 according to this embodiment having the above-described configuration will be described with reference to the flowchart of FIG.
Controller, based on the temperature signal from the temperature sensor 10, so that the temperature of the hot water in the hot water tank 2 is equal to or higher than a predetermined value T _0, and controls the operation of the heater 9. Predetermined value T ₀
Is set to a value higher than predetermined values T ₁ and T ₂ described later. When the user presses the vending machine's vending machine button or the tea dispenser's start button, the hot water supply device 1 starts the hot water discharge operation. Based on the display of the clock incorporated in the control device, the control device determines whether or not the present time belongs to a preset centralized selling time zone of the vending machine and a centralized operating time zone of the tea machine (S1).
Examples of the intensive sales time zone and the intensive operation time zone include a company lunch break, a break time, a movie theater break time, and the like.

If the current time does not belong to the intensive sales time zone or the intensive operation time zone, the control device sets the temperature of the hot water in the hot water tank to a predetermined value T ₂ based on the temperature signal from the temperature sensor 10.
It is determined whether or not this is the case (S2). Predetermined value T ₂ are, sales, depending on the foodstuff to provide, Food Sanitation Law, are determined by ordinances of municipalities. If the hot water temperature is the predetermined value T ₂ or more, the controller causes the predetermined discharge amount of hot water from the hot water tank 2 by opening the solenoid valve 6 (S3). As a result, the discharged hot water and the food material are mixed, or the discharged hot water is added to the food material, and the food material is heated and cooked for sale and provided. Next, the control device determines whether or not the float switch 8 is ON based on the water level signal from the float switch 8 (S4). When the float switch 8 is ON, the control device determines that the level of the hot water in the hot water tank 2 is equal to or more than the allowable value, and ends the hot water discharge operation. If the float switch 8 is OFF, the control device determines that the level of hot water in the hot water tank 2 has dropped below the allowable value, and opens the solenoid valve 4 until the float switch 8 is turned ON. Is supplied to the hot water tank 2 (S5), and then the hot water discharge operation is terminated.

When the sale and provision of food are repeated and the discharge of hot water is repeated and the water level of the hot water in the hot water tank 2 drops, water supply to the hot water tank 2 is started as described above.
After the supply of water to the hot water tank 2 is started, the sale and provision of food materials are repeated at a high frequency, and when the discharge of hot water is repeated at a high frequency, the water supply is repeated at a high frequency. Despite that, the temperature of the hot water in the hot water tank 2 gradually decreases. When the temperature of the hot water in the hot water tank 2 is less than a predetermined value T _2, the control device,
Display such as "Please wait" or "Under preparation"
Displayed on a display device of a vending machine or tea supply machine (not shown), to stop the discharge of the hot water by heating of the heater 9 to a temperature of the hot water in the hot water tank 2 is ₂ or greater than the predetermined value T (S2, S
1, S2), resume the discharge of the hot water when the temperature of the hot water in the hot water tank 2 is ₂ or greater than the predetermined value T (S2, S3). During times other than the intensive sales hours and the intensive operation hours, the frequency of selling and providing food is relatively low, and the frequency of hot water discharge is relatively low. It is unlikely that the sale or offer of the service will be suspended.

When the present time belongs to the intensive sales time zone and the intensive operation time zone, the control device controls the temperature of the hot water in the hot water tank 2 based on the temperature signal from the temperature sensor 10 to a predetermined value T.
₂ determines whether or not the predetermined high value above T ₁ than (S
6). If the temperature of the hot water in the hot water tank 2 is a predetermined value above T _1, the control unit by a predetermined amount discharging hot water from the hot water tank 2 by opening the solenoid valve 6 (S7). As a result, the discharged hot water and the food material are mixed, or the discharged hot water is added to the food material, and the food material is heated and cooked for sale and provided. Next, the control device determines whether or not the float switch 8 is ON based on the water level signal from the float switch 8 (S8). If the float switch 8 is ON, the control device determines that the level of the hot water in the hot water tank 2 is equal to or more than the allowable value, resets the count of a built-in counter (S9), and then performs the hot water discharge operation. finish. When the float switch 8 is OFF, the control device determines that the water level of the hot water in the hot water tank 2 has dropped below the allowable value, opens the solenoid valve 4 and turns the float switch 8 ON.
Until tap water is supplied to the hot water tank 2 (S10),
Next, the built-in counter is reset (S
9) Then, the hot water discharge operation ends.

[0010] The sales and provision of food are repeated at a high frequency, the discharge of hot water is repeated at a high frequency, the water level of the hot water in the hot water tank 2 drops, and water supply to the hot water tank 2 is started as described above. You. Even after the supply of water to the hot water tank 2 is started, the sales and provision of food are repeated at a high frequency, the discharge of hot water is repeated at a high frequency, the water supply is repeated at a high frequency, and the heating by the heater 9 is performed. The temperature of the hot water in the hot water tank 2 gradually decreases
It becomes less than ₁ . The temperature of the hot water in the hot water tank 2 becomes a predetermined value T ₁
If it becomes less than (S6), the control device
Based on the temperature signals from the temperature of the hot water in the hot water tank 2 determines whether or not a predetermined value T ₂ or higher (S11). If the temperature of the hot water in the hot water tank 2 is predetermined value T ₂ or more, the controller causes the predetermined discharge amount of hot water from the hot water tank 2 by opening the solenoid valve 6 (S12). As a result, the discharged hot water and the food are mixed, or the discharged hot water is added to the food,
Ingredients are cooked with heating and sold and provided.

At the time when the temperature of the hot water in the hot water tank 2 falls below the predetermined value T ₁ , the water level of the hot water in the hot water tank 2 has dropped to near the water level at which the float switch 8 switches from ON to OFF. After the hot water is discharged in step S12, the warm water tank float switch 8 is turned on.
It is below the water level that switches from to OFF. After the hot water is discharged in step S12, the control device does not supply water to the hot water tank 2 even if the float switch 8 is turned off, and adds 1 to the count number of the built-in counter (S1).
3) Then, it is determined whether or not the count number of the counter is less than a predetermined value N (S14). The predetermined value N is the temperature of the hot water tank 2 at which the float switch 8 switches from ON to OFF.
The difference between the water level of the internal hot water and the predetermined water level slightly above the position where the water discharge pipe 5 is attached to the hot water tank 2, that is, the hot water amount corresponding to the water level difference indicated by the symbol H in FIG. It is set to a value (integer) divided by the amount of hot water discharged from the tank 2.

When the count number of the counter is less than the predetermined value N (S14), the control device determines that the water level in the hot water tank 2 is sufficiently above the position where the water discharge pipe 5 is attached to the hot water tank 2, and It is determined that the hot water can be discharged from the hot water tank 2 even during the sale, and the hot water discharge operation ends.

When the discharge of hot water is repeated without supplying water to the hot water tank 2 and the count number of the counter reaches a predetermined value N (S14), the control device determines that the water level in the hot water tank 2 is It drops to the vicinity of the mounting position on the hot water tank 2 and judges that it is difficult to discharge hot water from the hot water tank 2 at the next sale, and opens the solenoid valve 4 to supply tap water until the float switch 8 is turned on. The hot water is supplied to the hot water tank 2 (S15, S16), then the count of the built-in counter is reset (S17), and then the hot water discharge operation is terminated.

When the temperature of the hot water in the hot water tank becomes lower than the predetermined value T ₂ , the control device issues a message “Please wait”,
A display such as "Preparing", displays on the display device of the vending machine or tea supply machine (not shown), the ejection of the hot water by heating of the heater 9 to a temperature of the hot water in the hot water tank 2 is ₂ or greater than a predetermined value T the stops (S11, S6, S11), the temperature of the hot water in the hot water tank 2 resumes discharge of the hot water becomes a ₂ or greater than a predetermined value T (S11, S12).

As can be understood from the above description, in the hot water supply apparatus 1 according to the present embodiment, the hot water discharge mode and the water level in the hot water tank 2 are set to the float switch during the time when the sale and supply of the foodstuffs are concentrated. , even in the case of a less OFF f switched level from oN, as long as the temperature of the hot water in the hot water tank 2 is the predetermined value T ₂ or more, without the hot water tank 2 f water,
The mode is switched to the mode in which the discharge of hot water from the hot water tank 2 is permitted a predetermined number of times N, so that the temperature of the hot water in the hot water tank 2 is prevented from lowering, and frequent hot water discharge is stopped. Outages are avoided.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. In the above embodiment,
Although the hot water discharge mode is automatically switched between the centralized sales time zone and the centralized operation time zone by the display of the clock built in the control device, the maintenance staff may manually switch the hot water discharge mode.

[0017]

As described above, in the hot water supply apparatus according to the present invention, the sale mode and the supply of foodstuffs are concentrated, and the discharge mode is set during the time when the discharge of hot water is concentrated. When the temperature falls below the water level at which the water is switched from ON to OFF, the temperature of the hot water in the hot water tank can be reduced by switching to a mode in which the discharge of hot water from the hot water tank is permitted a predetermined number of times without supplying water to the hot water tank. It is possible to avoid frequent discharge stoppage of hot water, and thus frequent stoppage of sales and supply of foodstuffs.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a hot water supply apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart of control of the water heater according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hot water supply apparatus 2 Hot water tank 3 Water supply pipe 4, 6 Solenoid valve 5 Water discharge pipe 7 Float 8 Float switch 9 Heater 10 Temperature sensor

Claims (1)

[Claims] The hot water tank controls the temperature of hot water in a hot water tank by temperature detection by a temperature sensor and heating by a heater, and controls the water level in the hot water tank by water level detection by a float switch and water supply by a water supply solenoid valve. If the temperature of the hot water inside is higher than the predetermined temperature, the discharge of hot water from the hot water tank is allowed, and the water level in the hot water tank turns on the float switch.
When the water level falls below the water level that switches from OFF to OFF, water is supplied to the hot water tank until the float switch is turned ON, and when the hot water temperature in the hot water tank falls below the predetermined temperature, the hot water is discharged from the hot water tank until the hot water temperature rises to the predetermined temperature. A hot water supply device configured to stop, and when the water level in the hot water tank falls below the water level at which the float switch switches from ON to OFF, the hot water tank is not supplied with water for a predetermined number of times. A hot water supply apparatus wherein a discharge mode allowing discharge of hot water is set in advance.