JPH1155873A - Vending machine for electric car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vending machine for an electric car to which electric power is supplied from an uninterruptible power supply which is as small and light as possible. SOLUTION: A vending machine 1 for an electric car consists of the following; a refrigerator unit 21 for cooling commodities in an accommodating room, an input terminal 19 for a refrigerator which supplies electric power to the refrigerator unit, a terminal 18 for starting which is connected with a power source 2 in the electric car, a terminal 17 for stationary operation which is connected with the power source 2 in the electric car via an uninterruptive power supply 11, a power source switching equipment 16 which performes connection by switching the input terminal for the refrigerator to the terminal for starting or the terminal for stationary operation, and a control equipment 12. By changing the power source switching equipment by the control equipment, the input terminal for the refrigerator is connected with the terminal for starting at the time of start of the refrigerator unit. On the other side, the input terminal for the refrigerator is connected with the terminal for stationary operation at the time of stationary operation of the refrigerator unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vending machine for a train to which electricity is supplied via an uninterruptible power supply.

[0002]

2. Description of the Related Art Electric power is supplied to electric trains from substations provided at substantially regular intervals along a track.
For example, in the case of the Tokaido Shinkansen, substations are installed about every 10 km. Then, every time a substation that supplies electricity to the train is changed to adjust the phase of electricity, an instantaneous power outage of about 0.3 seconds (ie, an instantaneous power outage) occurs in the power supply in the train. I have. Therefore, as a countermeasure against this momentary power failure, in a conventional vending machine for a train, as described in, for example, JP-A-6-187549 (G07F9 / 00), a power supply in the train is connected via an uninterruptible power supply. Electricity is supplied.

[0003]

In some cases, a vending machine is provided with a refrigerator unit. When the refrigerator unit is started, an inrush current of 4 to 8 times the rated current is generated for several cycles. Flows. On the other hand, the uninterruptible power supply can supply an inrush current higher than the rated output, but the time during which the inrush current can be supplied is about 1/2 cycle, which is short. Therefore, in order to prevent components such as the storage battery, relay and inverter of the uninterruptible power supply from being damaged by the starting current of the refrigerator unit, an uninterruptible power supply having a current supply capacity larger than the rated current of the vending machine It is necessary to employ a device, and the uninterruptible power supply is heavy and large.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a vending machine for a train in which electricity is supplied from an uninterruptible power supply as small and light as possible.

[0005]

According to a first aspect of the present invention, there is provided a vending machine for a train (1) according to the present invention, comprising: a refrigerator unit (21) for cooling goods in a storage room; An input terminal for a refrigerator (19) for supplying a power supply, a starting terminal (18) connected to a power supply (2) in a train,
A power supply for switching the regular operation terminal (17) connected to a power supply in the train via an uninterruptible power supply (11) and the refrigerator input terminal to a start-up terminal or a regular operation terminal A switching device (16) and a control device (12) are provided. The control device switches the power supply switching device to connect the refrigerator input terminal to the startup terminal when the refrigerator unit is started.
During the normal operation of the refrigerator unit, the input terminal for the refrigerator is connected to the terminal for the normal operation.

According to a second aspect of the present invention, there is provided a vending machine for a train, comprising: a refrigerator unit for cooling a product in a storage room;
An input terminal for a refrigerator for supplying electric power to the refrigerator unit, a start terminal connected to a power supply in the train, and a terminal for steady operation connected to a power supply in the train via an uninterruptible power supply. A power supply switching device for switching the input terminal for the refrigerator to a start-up terminal or a terminal for steady operation and connecting the terminal; and an instantaneous interruption detection means (3) for detecting an instantaneous interruption of the power supply in the train.
2) and a control device. This control device includes:
The set time for startup has been set. When the condition for starting the refrigerator unit is met, the control device switches the power supply switching device to connect the refrigerator input terminal to the startup terminal, and the instantaneous blackout detection unit detects the condition. After confirming that the elapsed time from the previous instantaneous stop is within the set time for activation, the refrigerator unit is activated. On the other hand, during the steady operation, the power supply switching device is switched to connect the refrigerator input terminal to the steady operation terminal.

Further, the train vending machine according to the third aspect of the present invention, in addition to the configuration according to the second aspect, outputs a train running signal output which detects whether the train is running or stopped. Means (31) are provided. Then, when the train traveling signal output means outputs the stop of the train, when the condition for starting the refrigerator unit is satisfied,
The elapsed time from the previous momentary stop detected by the momentary stop detection means is
Even if the set time for starting has elapsed, the control device has started the refrigerator unit.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a train vending machine according to the present invention will be described with reference to FIGS. FIG. 1 is an electric circuit diagram of a first embodiment of a train vending machine according to the present invention. FIG. 2 is a control circuit diagram of the vending machine for a train. FIG. 3 is a flowchart of the operation of the power supply switching device. In FIGS. 2 and 3, only parts related to the power supply switching device are shown.

The vending machine 1 is supplied with electricity from an AC power supply 2 in the train. This AC power supply 2
Electricity is supplied from substations arranged at approximately regular intervals along the track, and as described above, every time the substation that supplies electricity to the train changes, an instantaneous An outage has occurred. The interval between the instantaneous interruptions varies depending on the speed of the train and the interval between the substations, and is, for example, 5 to 6 minutes or 2 to 3 minutes. The shortest instantaneous interruption interval can be estimated depending on the route. .

The vending machine 1 includes a fluorescent lamp circuit 6 for lighting a fluorescent lamp or the like for a display device, a vending system circuit 7 for driving a merchandise dispensing device for dispensing merchandise, etc. -To-DC converter 8 for converting DC to DC
The fluorescent lamp circuit 6, the sales system circuit 7, and the AC / DC converter 8 are connected to the AC power supply 2 through an uninterruptible power supply (UPS) 11. The uninterruptible power supply 11 is composed of a storage battery, a relay, an inverter, and the like. Further, a control device 12 such as a microcomputer is connected to the AC / DC converter 8.

Further, the vending machine 1 has a power supply switching device 1 which is a switch mechanism constituted by a relay circuit or the like.
6 is provided. By switching the power supply switching device 16, the input terminal 19 for the refrigerator is connected to the terminal 17 for steady operation, and the input terminal 19 for the refrigerator is connected to the start terminal 18. Or you can. The switching of the power supply switching device 16 is performed by an output from the control device 12.

The stationary operation terminal 17 is connected to the uninterruptible power supply 1
1 connected. On the other hand, the startup terminal 18 is directly connected to the AC power supply 2 without passing through the uninterruptible power supply 11. The refrigerator input terminal 19 is connected to the refrigerator unit 21. This refrigerator unit 21
The vending machine 1 is for cooling sales products such as canned beverages stored in a storage room of the vending machine 1, and includes an evaporator, a condenser, a compressor, a blower, and the like (not shown).

The control device 12 receives a detected temperature signal from a storage room temperature detection sensor 26 for detecting the temperature of the storage room. The control device 12 outputs a switching signal to the power switching device 16 and outputs a start signal and a stop signal to the refrigerator unit 21. Further, the control device 12
Has a built-in timer 28, and a set temperature of the storage room and a set time for switching are set in advance.
The switching set time is a time for determining whether the refrigerator unit 21 is being started or has shifted to a steady operation, and the control device 12 determines that the switching set time has elapsed since the start of the refrigerator unit 21. Then, the power supply switching device 16 is switched so that the input terminal 19 for the refrigerator is connected to the terminal 17 for steady operation.
Connected to

Then, in the flowchart shown in FIG. 3, in step 1, the control device 12 determines whether or not the chiller unit 21 has reached a start condition. For example, when the temperature of the storage room detected by the storage room temperature detection sensor 26 becomes equal to or higher than the set temperature set in the control device 12, it is determined that the condition for starting the refrigerator unit 21 is satisfied. Then, if it is determined that the condition for starting is satisfied, the procedure goes to step 2. On the other hand, if it is determined that the condition is not the activation condition, the process returns to step 1.

In step 2, the control device 12 outputs a signal for switching to the starting terminal 18 to the power source switching device 16, and the power source switching device 16 receives this signal and changes the input terminal 19 for the refrigerator to the terminal 18 for starting. Connect to Therefore, the current of the AC power supply 2 which is the power supply in the train is directly supplied to the refrigerator unit 21 without passing through the uninterruptible power supply 11. Then, go to step 3.

In step 3, the control device 12 outputs a start signal to the refrigerator unit 21 and
1 starts. Then, go to step 4 and control device 1
2, the timer 28 measures the elapsed time from the activation of the refrigerator unit 21 and determines whether or not the elapsed time has reached the switching set time. If reached,
Go to step 5; if not, go to step 4
Back to. Although it is determined whether or not the start-up operation has been completed based on the set time for switching, the time from the start-up to the end of the start-up operation is, for example, about 1 to 15 seconds, which differs depending on the load condition. Therefore, the switching setting time is set to a long time, for example, about 15 seconds. Also,
In some cases, a momentary power failure occurs during the activation of the refrigerator unit 21. In such a case, the refrigerator unit 21 temporarily stops. Then, after the momentary stop, the refrigerator unit 21 is started again. In such a case, the elapsed time is measured from the time of restart.

In step 5, the refrigerator unit 21
Has completed the start-up operation and is in a steady operation. Also,
The control device 12 outputs a signal for switching to the terminal 17 for steady operation to the power supply switching device 16, and the power supply switching device 16 receives this signal and connects the input terminal 19 for the refrigerator to the terminal 17 for steady operation. Therefore, the current of the AC power supply 2 which is the power supply in the train is supplied to the refrigerator unit 21 via the uninterruptible power supply 11. As a result, even when a momentary power failure occurs during the steady operation, the uninterruptible power supply 11 continuously supplies electricity to the refrigerator unit 21 and the refrigerator unit 21 does not stop. Then, go to step 6.

In step 6, the control device 12 determines whether the refrigerator unit 21 has come to a stop condition. For example, when the temperature of the storage room detected by the storage room temperature detection sensor 26 becomes lower than the set temperature set in the control device 12, it is determined that the condition for stopping the refrigerator unit 21 is satisfied. Then, when it is determined that the condition for stopping is reached, the procedure goes to step 7. On the other hand, if it is determined that the condition is not the stop condition, the process returns to step 6 and the refrigeration unit 21 continues the steady operation.

In step 7, the control device 12 outputs a stop signal to the refrigerator unit 21 and the refrigerator unit 2
1 stops. Then, return to step 1.

As described above, in the first embodiment, during the normal operation of the refrigerator unit 21, the refrigerator unit 21
Is supplied with power from the uninterruptible power supply 11, so that the refrigerator unit 21 does not stop even if a momentary power failure occurs. On the other hand, when the refrigerator unit 21 is started, electricity is directly supplied from the AC power supply 2 in the train. Therefore, it is possible to prevent the inrush current at the time of startup from flowing through the uninterruptible power supply 11. As a result, the refrigerator unit 21, the fluorescent lamp circuit 6, the sales system circuit 7, and the control device 1
And the uninterruptible power supply 11 having a current supply capacity substantially equal to the rated current of the vending machine 1 including
It is smaller than a conventional uninterruptible power supply. Therefore, the uninterruptible power supply 11 can be reduced in size and weight.

Next, a second embodiment of the train vending machine according to the present invention will be described with reference to FIGS. 1, 4 and 5. FIG. FIG. 4 is a control circuit diagram according to the second embodiment. FIG. 5 is a flowchart of the operation of the power supply switching device. In the description of the second embodiment, the same reference numerals are given to components corresponding to the components of the first embodiment, and a detailed description thereof will be omitted.

In the above-described first embodiment, the instantaneous stoppage occurs when the refrigerator unit 21 is started. In the second embodiment, the instantaneous stoppage occurs when the instantaneous stoppage does not occur. The unit 21 is being started.

In the control device 12 of the second embodiment, in addition to the signal from the storage room temperature detection sensor 26, the signals from the train running signal output means 31 and the instantaneous stop detection means 32 are input. The train running signal output means 31 is, for example, a control device for driving the train body, and outputs a running signal when the train is running and outputs a stop signal when the train is stopped. doing. Also, the control device 1
2 measures the elapsed time from the instantaneous stop with the built-in timer 28 in response to the instantaneous stop detection signal from the instantaneous stop detection means 32, so that the elapsed time from the previous instantaneous stop can be known. I have.

Further, in the control device 12, a set time for starting is set in advance together with a set temperature of the storage room and a set time for switching. The set time for activation is an allowable elapsed time from the previous instantaneous interruption to the start of activation, and is roughly calculated from the shortest instantaneous interruption interval (for example, about 5 to 6 minutes) estimated for each route as described above. This is a time obtained by subtracting the time required for starting the refrigerator unit 21 (for example, about 1 to 15 seconds),
For example, the time is 3 to 4 minutes. And
If the refrigerator unit 21 is started within the set time for starting from the previous momentary stop, the refrigerator unit 21 is surely shifted to the steady operation at the next momentary stop.

The flowchart of the second embodiment shown in FIG. 5 is different from the flowchart of FIG. 3 of the first embodiment in that steps 2a and 2b are provided between steps 2 and 3. Is different. In step 2, the refrigerator input terminal 19 is connected to the start terminal 18, and in step 2a, the control device 12 determines whether or not the elapsed time from the previous momentary stop is within the set start time. I have. Then, if it is within the set time for starting, the procedure goes to step 3 to start the refrigerator unit 21. On the other hand, if it is outside the set time for activation, that is, if the set time for activation has elapsed, the procedure goes to step 2b.

In step 2b, the control device 12
It is determined whether the train is running or stopped based on a signal from the train running signal output means 31. If the train is stopped, the process proceeds to step 3 and the refrigerator unit 21 is started. On the other hand, if the vehicle is traveling, step 2a
And the refrigerator unit 21 maintains the stopped state.

As described above, in the second embodiment, the refrigerating machine unit 21 is started when the elapsed time from the previous instantaneous stop is within the set time for starting. Therefore,
It is possible to prevent the instantaneous stop from occurring during the activation of the refrigerator unit 21 as much as possible. As a result, the stoppage of the refrigerator unit 21 due to an instantaneous stop is reduced, and energy loss can be prevented.

By the way, if the refrigerator unit 21 is not started when the elapsed time from the previous instantaneous stop exceeds the set time for starting, the train is stopped (the elapsed time from the previous instantaneous stop is increased). In some cases, the refrigerator unit 21 cannot be started for a long time. However, in the second embodiment, since the refrigerator unit 21 is activated while the train is stopped by the signal from the train traveling signal output means 31 even when the set time for activation has elapsed, the train , The refrigerator unit 21 can be prevented from starting for a long time. It should be noted that the instantaneous stop does not occur while the train is stopped.

The embodiment of the present invention has been described above in detail.
The present invention is not limited to the above embodiment,
Within the gist of the present invention described in the claims,
Various changes can be made. Modification examples of the present invention are exemplified below. (1) In the embodiment, when the refrigerator unit 21 is stopped, the refrigerator unit 21 is connected to the uninterruptible power supply device 11, but may be directly connected to the AC power supply 2. That is, when the refrigerator unit 21 is stopped, the refrigerator input terminal 19 can be connected to the starting terminal 18.

(2) In the embodiment, the input terminal 19 for the refrigerator is switched from the terminal 18 for starting to the terminal 17 for steady operation after the set time for switching has elapsed from the start. Switching at another timing is also possible. For example, it is also possible to detect the current to the refrigerator unit 21 and switch after the current decreases to a steady state. (3) Specific values such as the instantaneous stoppage time and the time required for starting the refrigerator unit are different depending on various conditions.
Values such as the set time for activation and the set time for switching can be changed as appropriate.

(4) In the embodiment, the uninterruptible power supply 11 is installed outside the vending machine 1, but it can be built in the vending machine 1.

[0032]

According to the vending machine for a train of the present invention, when the refrigerator unit is started, the input terminal for the refrigerator is connected to the start terminal. The machine input terminal is connected to the steady operation terminal. Therefore, the inrush current generated at the time of starting the refrigerator unit does not flow through the uninterruptible power supply.
As a result, the current supply capability of the uninterruptible power supply can be reduced, and the size and weight can be reduced. Further, during the normal operation of the refrigerator unit, electricity is supplied via the uninterruptible power supply device, so that even if a momentary power failure occurs, it is possible to prevent the refrigerator unit from stopping.

Further, according to the vending machine for a train according to the second aspect, the set time for starting which is the permissible elapsed time from the last momentary stop to the start of starting is set in the control device. After confirming that the elapsed time from the previous instantaneous stop detected by the stop detecting means is within the set time for starting, the refrigerator unit is started. Therefore, if this set time for starting is set to substantially the time obtained by subtracting the time required for starting the refrigerator unit from the shortest interval between the assumed instantaneous interruptions, an instantaneous interruption occurs during the activation of the refrigerator unit. Can be reduced. As a result, it is possible to prevent the refrigerator unit from stopping during startup.

According to the third aspect of the present invention, the refrigerator unit is activated when the train is stopped. Therefore, it is possible to prevent the refrigerator unit from stopping for a long time while the train stops.

[Brief description of the drawings]

FIG. 1 is an electric circuit diagram of a first embodiment of a train vending machine according to the present invention.

FIG. 2 is a control circuit diagram of a vending machine for a train.

FIG. 3 is a flowchart of the operation of the power supply switching device.

FIG. 4 is a control circuit diagram according to a second embodiment.

FIG. 5 is a flowchart of the operation of the power supply switching device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vending machine 2 AC power supply (power supply in a train) 11 Uninterruptible power supply 12 Control device 16 Power supply switching device 17 Terminal for steady operation 18 Startup terminal 19 Input terminal for refrigerator 21 Refrigerator unit 31 Train running signal output means 32 Instantaneous stop detection means

Claims (3)

[Claims] 1. A refrigerator unit for cooling a product in a storage room, an input terminal for a refrigerator for supplying electric power to the refrigerator unit, a starting terminal connected to a power supply in the train, Switching between a terminal for steady operation connected to a power supply via an uninterruptible power supply, a power switching device for switching the input terminal for the refrigerator to a starting terminal or a terminal for steady operation, and a power switching device. Thereby, at the time of starting the refrigerator unit, the input terminal for the refrigerator is connected to the terminal for activation, while, at the time of steady operation of the refrigerator unit, the input terminal for the refrigerator is connected to the terminal for steady operation. A vending machine for a train, comprising a control device. 2. A refrigerator unit for cooling a product in a storage room, an input terminal for a refrigerator for supplying electric power to the refrigerator unit, a starting terminal connected to a power supply in the train, A power supply switching device that connects the power supply via an uninterruptible power supply via an uninterruptible power supply, switches the refrigerator input terminal to a start-up terminal or a power supply terminal, and connects the power supply in the train. Momentary power failure detection means for detecting a momentary power failure, and the set time for startup, which is the allowable elapsed time from the previous instantaneous power failure to the start of startup, are set. By switching the device, the input terminal for the refrigerator was connected to the startup terminal, and it was confirmed that the elapsed time from the previous instantaneous interruption detected by the instantaneous interruption detection means was within the set time for activation. After the refrigerator unit And a control device for switching the power supply switching device during normal operation and connecting the input terminal for the refrigerator to the terminal for normal operation. Vending machine. 3. A train running signal output means for detecting whether the train is running or stopped is provided. When the train running signal output means outputs a stop of the train, When the condition for starting the refrigerator unit is met, the control device controls the refrigerator unit even if the elapsed time from the previous instantaneous stop detected by the instantaneous stop detection unit has passed the set time for start-up. 3. The vending machine for a train according to claim 2, wherein the vending machine is activated.