JP2014001874A - Refrigerating/freezing device for vehicle and control method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerating/freezing device for a vehicle in which, during a backup operation using a battery, the battery can be prevented from being consumed, and a control method thereof.SOLUTION: When an engine 22 stops, a fan 15 and a compressor 11 are stopped and then, after the lapse of a predetermined time T1, the fan 15 and the compressor 11 are driven by using a battery 28 as a power source. An integration value of the time in which a door is opened is counted and when the integrated time reaches a threshold time T2, even before the lapse of the predetermined time, the fan 15 and the compressor 11 are driven. Further, when an integration value of a driving time of the compressor 11 reaches a threshold time T3 after the engine 22 stops, the fan 15 and the compressor 11 are stopped. By performing such control, power consumption of the battery can be reduced without decreasing cooling effects within a container 17, and the battery can be made small-sized and lightweight.

Description

  The present invention relates to a refrigeration / freezing device for a vehicle and a control method thereof, and more particularly to a technique for reducing power consumption.

  Conventionally, many vehicles equipped with refrigeration / freezing devices have been widely used to transport foods that require refrigeration and freezing, such as fresh foods and frozen foods. In a refrigeration / freezer for a vehicle, a backup operation is performed by operating a battery mounted on the vehicle when the vehicle is stopped to cool the inside of the container (refrigeration / freezer) (for example, see Patent Document 1). .

  In such a refrigeration / refrigeration system, when the air blower for cooling the container is operated by a backup operation, when the door provided in the container is opened by unloading or the like, the cold air in the container flows out to the outside. However, there is a problem that the outside air flows into the container and the temperature in the container rises. Thus, for example, Patent Document 2 proposes a method of suppressing an increase in the temperature in the container by controlling the start and stop of the cooling blower in conjunction with opening and closing of the door.

JP 2002-130891 A JP-A-8-271105

  However, in the conventional refrigeration / refrigeration apparatus described above, the refrigeration apparatus is driven using the backup battery power supply even though the temperature in the container is sufficiently cooled immediately after the engine is stopped, which is unnecessary. There is a problem that power is consumed.

  The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a vehicular refrigeration / freezing device capable of suppressing battery consumption during backup operation using a battery. Is to provide.

  To achieve the above object, a refrigeration / freezing apparatus for a vehicle according to the present invention is mounted on a vehicle and includes a compressor, an evaporator, and a power storage means (for example, a battery 28), and refrigerates / freezes the inside of a container. The driving state acquisition means (for example, the driving state detector 21) for acquiring the driving state of the vehicle, and the engine stop time timing means (for example, for measuring the elapsed time after the vehicle engine is stopped based on the driving state) , A first timer 41), door opening / closing detection means (for example, door switches 18a, 18b) for detecting opening / closing of the door provided in the container, and door opening time measuring means (for example, door opening time) And a second timer 42) and driving time measuring means (for example, a third timer) for measuring the driving time of the compressor after the engine is stopped. 43), and control means (for example, control unit 30) for controlling the compressor and air blowing means (for example, the evaporator fan 15) provided in the container, the control means being an engine of the vehicle Is stopped, the blowing means and the compressor are stopped, and the integrated value of the door opening time measured by the door opening time measuring means after the engine is stopped is set to a first threshold time (T2) set in advance. In the case of reaching the first stop time after the engine is stopped, the accumulated value of the door opening time does not reach the first threshold time after the engine is stopped. When the predetermined time (T1) set in advance is measured by the means, the blowing means and the compressor are driven using the power storage means as a power source. When the integrated value of the compressor operation time counted by the drive time timing means after the engine is stopped reaches a preset second threshold time (T3), the blower means and the compressor Control that stops operation is performed.

  The vehicle refrigeration / refrigeration apparatus control method according to the present invention is a control method for controlling a refrigeration / refrigeration apparatus that is mounted on a vehicle and includes a compressor, an evaporator, and a power storage means, and refrigerates / freezes the inside of the container. An operation state acquisition process for acquiring the operation state of the vehicle, an engine stop time timing process for measuring an elapsed time after the vehicle engine stops based on the operation state acquired in the operation state acquisition process, and provided in the container A door opening / closing detection process for detecting opening / closing of the door, a door opening time measuring process for measuring the door opening time, a driving time measuring process for measuring the driving time of the compressor after the engine is stopped, and the engine of the vehicle When the engine stops, a process of stopping the air blowing means and the compressor, and a process of timing the door opening time after the engine is stopped When the accumulated value of the door opening time measured in this time reaches a first threshold time (T2) set in advance, the process of driving the blower means and the compressor with the power storage means as a power source, and after stopping the engine, When the integrated value of the door opening time does not reach the first threshold time, and when a predetermined time (T1) set in advance is counted in the engine stop time counting process, the power storage means is powered The integrated value of the compressor operating time measured by the driving time measuring process after the process of driving the air blowing means and the compressor and the engine is stopped is a second threshold time (T3) set in advance. And a step of performing a control to stop the operation of the air blowing means and the compressor.

  In the refrigeration / freezing device for a vehicle and the control method thereof according to the present invention, when the engine of the vehicle is stopped, the compressor and the air blowing means are stopped, so that the power consumption of the storage battery can be reduced. Further, the integrated value of the time when the door is opened is counted, and when the integrated value reaches a preset first threshold time, driving of the compressor and the blowing means is started. Even if the temperature in the container rises due to this, it can be cooled.

  Even if the integrated value of the door opening time does not reach the first threshold time, if the engine stop time reaches a predetermined time, the compressor and the air blowing means are started. Even when the temperature in the container rises with time, it can be cooled.

  Furthermore, when the integrated value of the operation time of the compressor after the engine stops reaches the second threshold time, the compressor and the air blowing means are stopped, so that the compressor, before consuming the power charged in the storage battery, In addition, the air blowing means can be stopped reliably.

  Also, when the engine is stopped and the opening time of the door is less than the third threshold after the first threshold time has elapsed, the compressor is driven so that the compressor is driven frequently. It is possible to prevent the stop from being repeated, and it is possible to prevent deterioration of various devices related to driving of the compressor.

It is a block diagram which shows the structure of the refrigerator-freezer for vehicles which concerns on one Embodiment of this invention. 1 is a first partial view of a flowchart showing a processing procedure of a vehicular refrigeration / refrigeration apparatus according to an embodiment of the present invention. It is the 2nd partial view of the flowchart which shows the process sequence of the refrigerator-freezer for vehicles which concerns on one Embodiment of this invention. It is a timing chart which shows operation | movement of the refrigerator-freezer for vehicles which concerns on one Embodiment of this invention. It is a timing chart which shows operation | movement of the refrigerator-freezer for vehicles which concerns on one Embodiment of this invention. It is a timing chart which shows operation | movement of the refrigerator-freezer for vehicles which concerns on one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a vehicle refrigeration / freezing apparatus according to an embodiment of the present invention.

  As shown in FIG. 1, the refrigeration / freezing apparatus for a vehicle includes a compressor 11 that compresses a refrigerant, a condenser 12 that cools the refrigerant compressed by the compressor, a condenser fan 13, and a refrigerant that is cooled by the condenser 12. The evaporator 14 which cools the inside of the container by the above, the evaporator fan 15 provided in the evaporator 14, and the throttle mechanism 16 are provided.

  Furthermore, door switches 18a and 18b (door opening / closing detection means) for detecting the open / closed state of the door provided in the container 17 and a temperature sensor 19 for detecting the temperature in the container 17 are provided. The door switch 18a is provided, for example, on a side door of the container 17, and the door switch 18b is provided, for example, on a rear door.

  In addition, an operation state detector 21 (operation state acquisition means) that detects the operation state of the engine 22, a rectifier 24 that rectifies an AC voltage generated by the generator 23 connected to the engine 22, and power generation by the generator 23. A voltage detector 25 that detects a voltage and a switch 26 a provided between the generator 23 and the rectifier 24 are provided.

  Furthermore, a converter 27 that converts the voltage rectified by the rectifier to a desired voltage level, a battery 28 (electric storage means) that stores electric power, and a charge that performs control for charging the battery 28 with DC power output from the converter 27 An inverter 31 that converts the DC voltage output from the circuit 29, the switch 26b, the converter 27, or the DC voltage output from the battery 28 into an AC voltage and outputs the AC voltage, and a temperature sensor 32 that measures the outside air temperature. And have.

  Further, based on the detection results of the temperature sensors 19 and 32, the detection results of the door switches 18a and 18b, and the detection result of the operation state detector 21, the condenser fan 13, the evaporator fan 15 (air blowing means), the switches 26a and 26b, A control unit 30 (control means) for controlling the converter 27 is provided.

  The control unit 30 has various timer functions. Specifically, a first timer 41 (engine stop time measuring means) that measures an elapsed time after the engine 22 is stopped, and an integrated time (when the door is opened based on detection signals from the door switches 18a and 18b) A second timer 42 (door opening time counting means) that counts the door opening time) and a third timer 43 (driving time timing means) that counts the driving time of the compressor 11 when the engine is stopped. And a fourth timer 44 for measuring the elapsed time since the door was opened, and a fifth timer 45 for measuring the elapsed time after the compressor 11 is stopped. In addition, the control part 30 can be comprised as an integrated computer which consists of memory | storage means, such as central processing unit (CPU), RAM, ROM, a hard disk, for example.

  In the refrigeration / refrigeration apparatus according to the present embodiment, based on the elapsed time after the engine 22 is stopped, the accumulated time that the door is opened, the accumulated time that the compressor 11 is driven by the battery 28, and the like, By controlling the drive and stop of the compressor 11 and the evaporator fan 15, the power consumption of the battery 28 is reduced while maintaining the temperature in the container 17 at a low temperature, thereby saving power. In the following, the evaporator fan 15 is simply abbreviated as “fan 15”.

  Hereinafter, the operation of the refrigeration / freezing apparatus according to the present embodiment will be described with reference to the flowcharts shown in FIGS. 2 and 3 are flowcharts showing a processing procedure by the control unit 30. FIG. The processes shown in FIGS. 2 and 3 are sequentially executed for each preset calculation cycle.

  First, in step S11 of FIG. 2, the control unit 30 determines whether or not the vehicle engine 22 is stopped based on the detection data of the driving state detector 21.

  When the engine 22 is being driven, such as when the vehicle is running or idling (NO in step S11), in step S12, the control unit 30 turns on the switch 26a shown in FIG. 1 and turns off the switch 26b. As a result, the compressor 11 is driven by the power generated by the generator 23. That is, when the engine 22 is driven, power is generated by the generator 23 connected to the engine 22, so that the generated AC voltage is converted into a DC voltage by the rectifier 24, and further, a voltage of a desired level is converted by the converter 27. Is converted to The converted DC voltage is converted into an AC voltage having a desired frequency by the inverter 31, and the drive motor of the compressor 11 is rotated by the AC voltage, and the low-temperature refrigerant is supplied to the evaporator 14 through the throttle mechanism 16. Furthermore, since the cool air circulates in the container 17 by driving the fan 15, the inside of the container 17 is cooled.

  The DC voltage converted by the converter 27 is charged to the battery 28 by the charging circuit 29. Therefore, when the vehicle engine 22 is being driven, the compressor 11 is driven by the power generated by the driving of the engine 22 to cool the container 17 and the battery 28 is charged with DC power. It will be.

  On the other hand, when the engine 22 is stopped (YES in step S11), the control unit 30 stops the compressor 11 and the fan 15 in step S13.

  In step S <b> 14, the control unit 30 activates the first timer 41 and starts measuring the elapsed time after the engine 22 is stopped. Further, the second timer 42 is operated to start counting the integrated value of the door opening time of the container 17, and the third timer 43 is operated to start measuring the integrated value of the driving time of the compressor 11.

  In step S15, the control unit 30 determines whether or not the door opening integration time has reached a preset threshold time T2 (first threshold time; for example, T2 = 5 minutes). If the accumulated time reaches a preset threshold time T2 (YES in step S15), the control unit 30 drives the compressor 11 and the fan 15 in step S16. In this process, after the engine 22 stops and the compressor 11 and the fan 15 stop, when the integrated value of the door opening time becomes a long time (when the threshold time T2 is reached), the inflow of outside air Therefore, it is considered that the temperature in the container 17 has risen, and thus the inside of the container 17 is cooled by driving the compressor 11 and the fan 15 using the battery 28 as a power source.

  In step S17, the control unit 30 determines whether or not the integrated value of the driving time of the compressor 11 has reached a preset threshold time T3 (second threshold time). If the threshold time T3 has been reached (YES in step S17), the control unit 30 stops the compressor 11 and the fan 15 in step S18. At this time, the threshold time T3 is set as a time during which the compressor 11 and the fan 15 can be driven by the charging power of the battery 28. Accordingly, the compressor 11 and the fan 15 can be stopped before the charging power of the battery 28 is consumed.

  Next, in step S19, the control unit 30 determines whether or not the elapsed time after stopping the engine 22 has reached a predetermined time T1 (for example, T1 = 10 minutes) set in advance. If the predetermined time T1 has not been reached, the process returns to step S15. If the predetermined time T1 has been reached, the process proceeds to step S20.

  In step S <b> 20, the control unit 30 drives the compressor 11 and the fan 15. In this process, when the engine 22 is stopped and the compressor 11 and the fan 15 are stopped and then the predetermined time T1 has elapsed, it is considered that the temperature in the container 17 has risen. And the inside of the container 17 is cooled by starting the drive of the fan 15.

  In step S21, the control unit 30 determines whether or not the door provided in the container 17 has been opened based on the detection signals of the door switches 18a and 18b. If it is detected that the door is opened (YES in step S21), the control unit 30 stops the fan 15 in step S22. In other words, when the door is open, driving the fan 15 encourages the cool air in the container 17 to flow outside due to the air flow, so the fan 15 is stopped to prevent this. .

  Further, in step S23, the control unit 30 activates the fourth timer 44 to measure the elapsed time while the door is opened. In step S24, the control unit 30 determines whether or not the door opening time has reached a preset threshold time τ1 (third threshold time; for example, τ1 = 1 minute). If the threshold time τ1 has been reached, the process proceeds to step S26, and if the threshold time τ1 has not been reached, the process proceeds to step S25.

  In step S25, the control unit 30 determines whether or not the door is closed. If the door is not closed, the process returns to step S23. If the door is closed, the control unit 30 starts driving the fan 15 in step S32.

  On the other hand, when the door opening time reaches the threshold time τ1 (YES in step S24), the control unit 30 performs a stop operation of the compressor 11 in step S26. That is, at this time, the fan 15 stops and the rotation speed of the compressor 11 decreases toward a complete stop.

  Further, the control unit 30 controls stop and driving of the fan 15 and the compressor 11 in conjunction with detection results of the door switches 18a and 18b. Specifically, when it is detected by the door switches 18a and 18b that the door is open, the fan 15 and the compressor 11 are stopped, and when the door is detected to be closed. , The fan 15 and the compressor 11 are driven.

  In step S27, the control unit 30 determines whether or not an elapsed time after the door is opened reaches a preset threshold time τ2 (for example, τ2 = 5 minutes). If the threshold time τ2 has been reached, the process proceeds to step S29. If the threshold time τ2 has not been reached, the process proceeds to step S28.

  In step S28, the control unit 30 determines whether or not the door is closed. If the door is not closed, the process returns to step S27. If the door is closed, the control unit 30 starts driving the fan 15 and further drives the compressor 11 in step S33. To start.

  On the other hand, when the door opening time reaches the threshold time τ2 (YES in step S27), in step S29, the control unit 30 completely stops the compressor 11.

  In step S30, the control unit 30 operates the fifth timer 45 to determine whether or not the elapsed time since the compressor 11 has stopped reaches a preset threshold time τ3 (for example, τ3 = 1 minute). Judging. When the elapsed time reaches the threshold time τ3, the compressor 11 is driven in step S31. Here, the threshold time τ3 is a waiting time when the driving is started again after the compressor 11 is completely stopped, and can be set to 0 second to 5 minutes, for example.

  Next, with reference to the timing chart shown in FIG. 4, the processing of steps S19 to S29 shown in FIGS. 2 and 3 will be described more specifically.

  When the engine 22 is stopped at time t0 shown in FIG. 4A, the fan 15 is stopped as shown in FIG. 4C, and further, the compressor 11 is stopped as shown in FIG. 4D. . At this time, the compressor 11 does not stop immediately, but after a certain delay time elapses, the compressor 11 gradually decreases to the minimum engine speed, and then operates to stop completely (FIG. 4). As shown in (d), the on / off state of the compressor 11 changes with a step).

  As shown in FIGS. 4C and 4D, when a predetermined time T1 elapses from the stop of the engine 22, the fan 15 and the compressor 11 start driving at this time t1. Thereafter, when the door is opened at time t2, the fan 15 stops, and when the door is closed at time t3, the time from t2 to t3 (door opening time) is set in advance. When it is between τ1 and τ2, the driving and stopping of the fan 15 and the compressor 11 are controlled in conjunction with the opening and closing of the door. That is, between time t2 and t3, the stop and drive of the fan 15 and the compressor 11 are switched in conjunction with the opening and closing of the door. Further, as shown at times t4 to t5, when the door opening time exceeds the threshold time τ2, and then the door is closed, the fan 15 starts to be driven simultaneously with the door closing (time t5), and After the elapse of the threshold time τ3, the compressor 11 starts driving.

  That is, as described above, when the door opening time is shorter than the threshold time τ1, which is a delay time when the compressor 11 starts to be driven, the driving of the compressor 11 is continued regardless of the door opening. In addition, when the door opening time is between τ1 and τ2, the door is closed when the compressor 11 does not stop completely, so that the compressor 11 can be easily driven from the stopped state, The driving and stopping of the fan 15 and the compressor 11 are controlled in conjunction with opening and closing of the door. Further, when the door opening time exceeds τ2, the compressor 11 is completely stopped. Therefore, when the door is closed thereafter, the compressor 11 cannot be started immediately, and the threshold value required for starting. After the elapse of time τ3, the compressor 11 starts to be driven.

  By doing so, it is possible to perform drive and stop control of the compressor 11 with less energy loss.

  FIG. 5 is a timing chart showing the processing of steps S14 and S15 of FIG. As shown in FIG. 5 (a), even when the engine 22 stops at time t10 and the elapsed time does not reach the predetermined time T1, the second timer 42 is shown in FIG. 5 (b). Thus, when the accumulated time of door opening reaches the threshold time T2 set in advance at time t11, the fan 15 is driven as shown in FIG. As shown in FIG. 5D, the compressor 11 is driven. In other words, the fan 15 and the compressor 11 are controlled to be driven at time t11 before time t12 when the elapsed time after the engine 22 has stopped reaches the predetermined time T1.

  Similarly, even after the predetermined time T1 has elapsed after the engine 22 is stopped, the fan 15 and the compressor 11 are stopped when the door opens between times t13 and t14. Further, as shown in FIG. 5D, when the accumulated drive time of the compressor 11 reaches a preset threshold time T3 at time t15, the compressor 11 is stopped.

  FIG. 6 is a timing chart showing the operation of the fan 15 and the operation of the compressor 11 when the door is repeatedly opened for a short time (time less than the threshold time τ1). As shown in FIG. 6A, when the engine 22 is stopped at time t20 and the door is repeatedly opened for a time shorter than the threshold time τ1 as shown in FIG. 6B, the predetermined time T1 is Until the time has elapsed, as shown in FIGS. 6C and 6D, both the fan 15 and the compressor 11 are maintained in the stopped state. In addition, at time t21 when the predetermined time T1 has elapsed, the fan 15 and the compressor 11 start driving. Thereafter, as shown in FIG. 6C, the fan 15 is switched on and off in conjunction with the opening and closing of the door. On the other hand, as shown in FIG. 6D, the compressor 11 is maintained in the driving state regardless of whether the door is opened or closed. Therefore, when the door is opened / closed for a short time, the compressor 11 is kept in the driving state, so that it is possible to prevent deterioration of the equipment due to frequent driving and stopping.

  Thus, in the vehicular refrigeration / refrigeration apparatus according to the present embodiment, when the engine 22 is stopped, the compressor 11 and the fan (evaporator fan) 15 are stopped. That is, immediately after the engine 22 is stopped, since the cold air remains in the container 17, the temperature in the container 17 is sufficiently low without driving the compressor 11. By stopping, consumption of the electric power stored in the battery 28 can be reduced. Therefore, the capacity of the battery 28 can be reduced, and the weight and cost of the battery 28 can be reduced.

  When the predetermined time T1 has elapsed after the engine 22 is stopped, the compressor 17 and the fan 15 are driven using the battery 28 as a power source to cool the inside of the container 17. At this time, when opening of the door is detected, the fan 15 is stopped to prevent cold air from flowing out.

  In addition, before the predetermined time T1 after the engine 22 stops, the fan 15 and the compressor 11 are stopped, and frequent driving and stopping are not performed. Can be long.

  Furthermore, the drive and stop of the compressor 11 are switched according to the continuous opening time of the door. That is, when the door opening time is shorter than the threshold time τ1, the driving of the compressor 11 is continued, and when the door opening time is in the range of the threshold time τ1 to τ2, the compressor 11 is interlocked with the door opening / closing. Switching between driving and stopping. Further, when the door opening time exceeds the threshold time τ2, the compressor 11 is stopped. After that, when the door is closed, the driving of the compressor 11 is started after the threshold time τ3 has elapsed. Therefore, the inside of the container 17 can be cooled by performing appropriate control according to the driving state of the compressor 11.

  Further, when the door is opened after the engine 22 is stopped and the fan 15 and the compressor 11 are stopped, the accumulated time of the door opening is counted, and the counted accumulated time reaches a preset threshold time T2. In this case, the fan 15 and the compressor 11 are controlled to start driving regardless of whether or not the predetermined time T1 has passed. Therefore, after the engine 22 is stopped, when the door is frequently opened and closed and the temperature in the container 17 rises, the fan 15 and the compressor 11 can be driven to cool the inside of the container. .

  Furthermore, the third timer 43 is used to measure the cumulative drive time of the compressor 11, and when the cumulative drive time reaches the threshold time T3, the drive of the fan 15 and the compressor 11 is stopped. The power supply from the battery 28 can be stopped before the 28 charging power is depleted.

  As described above, the refrigeration / refrigeration apparatus and the control method thereof according to the present invention have been described based on the illustrated embodiment, but the present invention is not limited to this, and the configuration of each unit may be any arbitrary function having the same function. It can be replaced with a configuration one.

  For example, in the above-described embodiment, the evaporator fan 15 is taken as an example of the air blowing means, and the example of switching the driving and stopping of the evaporator fan 15 has been described. However, the present invention is not limited to this, and the inside of the container 17 It is also possible to use other air blowing means capable of circulating the air.

  INDUSTRIAL APPLICABILITY The present invention can be used for efficiently cooling a refrigeration / freezing device for a vehicle and improving energy efficiency.

DESCRIPTION OF SYMBOLS 11 Compressor 12 Capacitor 13 Capacitor fan 14 Evaporator 15 Evaporator fan 16 Throttle mechanism 17 Container 18a, 18b Door switch 19 Temperature sensor 21 Operation state detector 22 Engine 23 Generator 24 Rectifier 25 Voltage detector 26a, 26b Switch 27 Converter 28 Battery 29 Charging circuit 30 Control unit 31 Inverter 32 Temperature sensor

Claims (4)

In a refrigeration / refrigeration apparatus mounted on a vehicle, including a compressor, an evaporator, and a power storage means, for refrigeration / freezing the inside of a container,
Driving state acquisition means for acquiring the driving state of the vehicle;
An engine stop time measuring means for measuring an elapsed time after the engine of the vehicle is stopped based on the driving state;
Door opening and closing detection means for detecting opening and closing of the door provided in the container;
A door opening time measuring means for measuring the opening time of the door;
Drive time measuring means for measuring the drive time of the compressor after the engine is stopped;
Control means for controlling the compressor and air blowing means provided in the container,
The control means includes
When the vehicle engine is stopped, the air blowing means and the compressor are stopped,
When the integrated value of the door opening time measured by the door opening time measuring means after the engine stops reaches a preset first threshold time, the air blowing means and the compressor are driven using the power storage means as a power source. Let
When the integrated value of the door opening time does not reach the first threshold time after the engine is stopped, and the engine stop time counting unit counts a predetermined time, the power storage unit is Driving the blowing means and the compressor as a power source;
When the integrated value of the compressor operating time measured by the driving time measuring means after the engine has stopped reaches a preset second threshold time, the operation of the blowing means and the compressor is stopped. A refrigeration / freezing device for a vehicle, characterized by performing control. The control means includes
When the integrated value of the door opening time does not reach the first threshold time after the engine is stopped, the engine stop time measuring means measures a predetermined time, and drives the air blowing means and the compressor. When the door is opened, the air blowing means and the compressor are stopped, and when the door is closed, the air blowing means and the compressor are driven,
2. The vehicular refrigeration according to claim 1, wherein when the door opening time is less than a preset third threshold time, the driving of the compressor is continued regardless of the door opening. -Refrigeration equipment. In a control method for controlling a refrigeration / refrigeration apparatus mounted on a vehicle, including a compressor, an evaporator, and a power storage means, and refrigeration / freezing the inside of a container,
A driving state acquisition process for acquiring the driving state of the vehicle;
Based on the driving state acquired in the driving state acquisition step, an engine stop time timing step for measuring an elapsed time after the vehicle engine is stopped,
A door opening and closing detection process for detecting opening and closing of a door provided in the container;
A door opening time counting process for measuring the opening time of the door;
A driving time counting process for measuring the driving time of the compressor after the engine is stopped;
When the engine of the vehicle is stopped, a step of stopping the air blowing means and the compressor;
When the integrated value of the door opening time counted in the door opening time counting process after the engine stops reaches a first threshold time set in advance, the air blowing means and the compressor are operated using the power storage means as a power source. The driving process,
In a case where the integrated value of the door opening time does not reach the first threshold time after the engine is stopped and the preset time is counted in the engine stop time counting process, the power storage means is A step of driving the blowing means and the compressor as a power source;
When the integrated value of the compressor operation time measured by the driving time counting process after the engine is stopped reaches a preset second threshold time, the operation of the blower and the compressor is stopped. A process of performing control, and
A method for controlling a refrigeration / freezing device for a vehicle, comprising: When the integrated value of the door opening time does not reach the first threshold time after the engine is stopped, the engine stop time measuring means measures a predetermined time, and drives the air blowing means and the compressor. In the case where the door is opened, the air blowing means and the compressor are stopped when the door is opened, and the air blowing means and the compressor are driven when the door is closed,
The process of claim 3, further comprising: a step of continuing to drive the compressor regardless of the opening of the door when the opening time of the door is less than a preset third threshold time. The vehicle refrigeration / refrigeration apparatus control method described.

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