JPS6012205Y2 - vending machine - Google Patents

Description

[Detailed description of the invention] The present invention relates to a vending machine that keeps products or ingredients used for cooking the products at a predetermined temperature condition and warms them. In the event that a situation occurs, the power supply to the heating device will be shut down to prevent sales from automatically restarting even if the power is restored, ensuring the reliability of the quality of the products being sold. Our goal is to provide high quality equipment.

An embodiment of the present invention will be described below, taking as an example a coffee vending machine configured to be able to sell coffee only when the water temperature of the water heater is 70° C. or higher.

Figure 1 is a front view of a coffee vending machine, and Figure 2 is a schematic diagram of its configuration, where 1 is a product display window, 2 is a coin slot, and 3 is a coin slot.
4 is a product selection push button, 4 is a product outlet, 5 is a sold-out indicator lamp, and 6 is a coin unit, which counts the amount of money inserted from the coin slot 2.

Reference numeral 7 denotes a sales price setting unit which outputs a bend signal to the product selection push button 3 corresponding to the column of sales price within the input amount.

8 is a control device that controls each device, and the selected push button 3
The product dispensing device 9 is controlled to dispense the product corresponding to the product, and upon detecting that any of the push buttons 3 is selected, the bend signal output from the sales price setting section 7 is reset.

Further, the control device 8 stops the sales operation of the sold-out column based on the sold-out signal from the product dispensing device 9, and also stops the sale of all columns when the water temperature of the water heater 18, which will be described later, is below a predetermined temperature. It is configured.

As shown in FIG. 3, the product dispensing device 9 places a cup 11 on a pedestal 10 disposed facing the product outlet 4.
a cup supply device 13 for dispensing through a chute 12;
Disposed at the discharge ports of the raw material tanks 14a to 14e, respectively,
Depending on the selected push button 3, a predetermined amount is transferred to the bowl 15a=
raw material dispensing devices 16a to 16e discharging raw material to mixers 17a to 17c via 15b and 15c, and boiling water at a predetermined temperature to the bowls 15a to 15C via solenoid valves 18a to 18c
a water supply device 18 that supplies the mixers 17a to 17c provided below, and supply pipes 19a to 19c that supply the raw materials dissolved with hot water in the mixers 17a to 17c to the cup 11 on the pedestal 10; A drain bucket 20 is provided to receive hot water spilled from the cup 11, and the drain bucket 20 is provided with a float switch 21 to prevent overflow.
When the level reaches a predetermined value, the controller 8 is instructed to stop selling.

The hot water supply device 18 includes a hot water tank 24 in which the supply of tap water is adjusted by a float switch 22 and a solenoid valve 23 so that the amount of water stored is at a constant level, and the hot water tank 24.
a heater 25 and a temperature control thermoswitch 26 for maintaining the tap water at a first predetermined temperature (for example, 93c);
In order to detect the temperature of the tap water in the hot water tank 24, a bimetallic high limit thermoswitch 27 [predetermined temperature higher than the detected temperature 93c] is installed on the outer wall of the hot water tank 24.
A bimetallic low limit thermoswitch 28 [detected temperature 63°C] and a predetermined temperature (70'
A start detection thermoswitch 29 for detecting the start of sales of C-ri, and a manually set thermoswitch 30 that detects that the water temperature has risen to a predetermined temperature (75°C) or higher, which will be described later.
A thermoswitch 32 for preventing boiling is also attached via an overflow pipe 31.

Note that 33 is a limit switch for preventing dry cooking.

FIG. 4 shows the power supply circuit of the heater 25 and the thermoswitch 2.
9 shows the relationship between the control device 8 that controls the sales operation, 34 is a power plug connected to a commercial power source, 35a,
35b is a circuit breaker; 36 is a lamp for monitoring the energization state of the heater 25; 37 is a relay that instructs the control device 8 to stop selling in the degaussed state; 38 is a limit switch that detects when the cup supply device 13 runs out of a cup. Then, in the cup out detection state, the break state occurs.

The manually set type thermoswitch 30 is made of bimetal, and in the set state changes from the make state to the break state when the temperature reaches 75°C, and thereafter maintains the break state regardless of the water temperature. .

Also, the low limit thermoswitch 28 has a temperature of 63'C.
The state changes to a make state and a break state when the state is above or below , respectively.

The state of each contact point shown in FIG. 4 shows an operation start state in which the manually set type thermoswitch 30 is set, and the operation will be explained step by step with reference to FIGS. 5a to 5f.

Note that in the normal state, the high limit thermoswitch 27, boil prevention thermoswitch 32, dry cooking prevention thermoswitch 33, overflow prevention limit switch 21, and cup runout detection limit switch 38 are all in the closed state, so the following explanation will not be provided. Omitted.

A manually set thermoswitch 30 (
5C], the heater 25 is switched between the temperature control thermoswitch 26 and the manual setting thermoswitch 30.
energization is started through the water, the water temperature rises as shown in Figure 5, and when it reaches 0°C, the low limit thermo switch 28 is activated.
(Fig. 5 d) shifts to the make state, and the heater 25 is energized by the parallel circuit A of the manual setting type thermoswitch 30 and the low limit thermoswitch 28 and the temperature adjustment thermoswitch 26 [Fig. 5 e] It is energized by the logical product.

When the temperature further increases and the water temperature reaches 70°C, the start detection thermo switch 29 becomes in the make state, the relay 37 is energized, and the control device 8 is activated via the a contact 37a of the relay 37.
The input terminal S of is connected to the X phase, and the sales discontinued state is canceled [FIG. 5f].

When the water temperature further rises from 70°C and reaches 75°C, the manually set thermoswitch 30 set at time T1 shifts to the break state, and the temperature control thermoswitch 26 and low limit thermoswitch are connected to the heater 25. It moves to the energized state by ANDing with 28.

The energization of the heater 25 is continued until the temperature of the water once reaches 93°C, and once it reaches 93°C, on-off control is performed to maintain the temperature at 9γC.

If, for example, a power outage [Fig. 5a] occurs at time T2, the temperature of the hot water drops to below 70°C, and the start detection thermoswitch 29 shifts to the break state.
As a result, the control device 8 remains ready for sale until the relay 37 is demagnetized;
If the power is not re-energized until the temperature is lowered to below 63'C, the low limit thermoswitch 28 will enter the break state when the water temperature falls below 63'C, and the power supply circuit of the heater 25 will be turned off. will be shut down.

Therefore, even if the power is restored after that, the heater 25 will not be activated unless the manual setting type thermoswitch 30 is set again.
The relay 37 remains in the demagnetized state, and the control device 8 remains in the discontinued state.

If a situation occurs in which the temperature rises to 93'C as the first predetermined temperature and then falls to 63'C as the third predetermined temperature, then the second predetermined temperature will be 75°C. Since the configuration is such that the power supply to the heater 25 is not restarted until the manually set type thermoswitch 30 that is activated at Sales will not be resumed in due course.

In the above embodiment, the temperature adjustment thermoswitch 26, low limit thermoswitch 28, and start detection thermoswitch 29 were explained to switch between the break state and the make state at 93°C, 63°C, and 70°C. However, for example, in the case of the temperature control thermoswitch 26, the break state occurs when the water temperature reaches 93 degrees Celsius, and the contact point that becomes the break state is 900 C! In reality, the device is turned on and off repeatedly within a certain predetermined temperature range, such that it enters the make-up state when the temperature drops to a certain temperature.

In the above embodiment, the temperature of the hot water in the hot water supply tank 24 has been described as an example, but the same applies to the temperature inside a refrigerator or the like.

As explained above, according to the present invention, the temperature of the product or the material used for cooking the product, which has been heated to the first predetermined temperature condition, is lowered to a third predetermined temperature lower than the first predetermined temperature. In the case of a vending machine configured to carry out vending at a predetermined temperature equal to or higher than a third predetermined temperature, in order to shut down the power supply circuit of the heating device when
Unless the manual setting type thermoswitch, which operates at a second predetermined temperature that is below the first predetermined temperature and above the third predetermined temperature, is set again, the sale will not be carried out automatically again, and the product will not be sold again. It is possible to ensure sufficient quality.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the coffee vending machine, FIG. 2 is a schematic diagram of the device, FIG. 3 is a diagram of the product dispensing device, and FIG. 4 is a heating device power supply circuit. Figure, 5th
Figure a=f is an explanatory diagram of the operation. 9... Product dispensing device, 24... Hot water tank, 25... Heater, 26... Temperature adjustment thermo switch, 28... Low limit thermo switch, 30...Manual set type thermo switch.

Claims (1)

[Scope of utility model registration request] Stored items such as products or materials used for cooking products are classified as
In a vending machine having a heating device whose energization is controlled by a temperature control thermoswitch to maintain a predetermined temperature at a predetermined temperature, when set, the stored item is heated to a second predetermined temperature lower than the first predetermined temperature. a manually set type thermoswitch that detects that the temperature of the stored material is lower than the second predetermined temperature and shifts from the make state to the break state and thereafter maintains the break state regardless of the temperature; A first thermoswitch that changes into a make state and a break state at temperatures above and below the temperature is provided, and the power supply circuit of the heating device includes a make contact of the first thermoswitch and a manually set thermoswitch. A second thermoswitch is provided in which a parallel circuit is connected in series and detects a fourth predetermined temperature at which the stored material is lower than the first predetermined temperature and higher than the third predetermined temperature; According to the temperature detected by the second thermoswitch, the controller is instructed to stop selling the stored product when the temperature is lower than a fourth predetermined temperature, and the instruction to stop selling is canceled when the stored product is higher than the fourth predetermined temperature. Configured vending machine.