JP2012149848A - Refrigerating device for transportation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerating device for transportation configured to automatically adjust driving specifications by operation conditions input in advance by a user before start, and prevent stop during operation due to reduction in power stored in batteries.SOLUTION: The refrigerating device for transportation to be operated by either a commercial power source 12, 13A, 13B or a storage battery 11 installed for the refrigerating device as a power source includes, a controller 18 which inputs the operation conditions such as a preset temperature or operation time before start, calculates the required electric power according to the operation conditions and a driving state, adjusts the driving specifications according to a driving map previously set based on the required electric power and storage battery capacity, and performs automatic control operation on the refrigerating device.

Description

  The present invention relates to a transport refrigeration apparatus that can be operated using either a commercial power source or a dedicated storage battery as a power source.

  In a transport refrigeration apparatus that is mounted on a refrigeration vehicle or the like, a transport refrigeration apparatus that is operated by using either a commercial power source or a dedicated storage battery mounted for the refrigeration apparatus as a power source is known ( For example, see Patent Documents 1-3). In such a transport refrigeration apparatus, when the refrigerated vehicle is stopped and a commercial power source can be used, the refrigeration vehicle is operated using the commercial power source and simultaneously charges the storage battery. When collecting or delivering a package while traveling or temporarily stopping, the storage battery is used as a power source.

JP 11-83265 A JP 2000-283622 A Japanese Patent No. 3735337

  However, when the transport refrigeration apparatus is operated with a storage battery as a power source, the capacity of the storage battery is limited, and the storage battery capacity cannot be increased easily. There was a risk of lowering. In this case, since the refrigeration apparatus is instructed to stop the protection by displaying that the voltage has dropped, it is impossible to maintain the product temperature of the luggage loaded in the warehouse.

  Therefore, the capacity of the storage battery is detected and the remaining amount is displayed to warn the vehicle administrator (user), the output when driving the storage battery to the power source is limited, or compression according to the remaining amount of the storage battery Although the speed of the machine is limited so that it does not exceed the preset upper limit value, the user cannot accurately know when the protection stop state will occur. The fact was that we were not able to respond in advance.

  The present invention has been made in view of such circumstances, and the user automatically adjusts the operation specifications by inputting the operation conditions in advance before the operation starts, and the operation is stopped during the operation due to the reduced storage battery capacity. It is an object of the present invention to provide a transport refrigeration apparatus that can prevent the above-described problems.

In order to solve the above-described problems, the transport refrigeration apparatus of the present invention employs the following means.
That is, the transport refrigeration apparatus according to the present invention is a transport refrigeration apparatus that is operated by using either a commercial power source or a storage battery mounted for the refrigeration apparatus as a power source. Enter the operating conditions such as time, calculate the necessary power from the operating conditions and the operating state, adjust the operating specifications by a predetermined operation map based on the required power and the storage battery capacity, A controller for automatically controlling the refrigeration apparatus is provided.

  According to the present invention, before starting the operation, at least the operation conditions such as the set temperature and the operation time are input, the necessary power is calculated from the operation conditions and the operation state, and the necessary power and the storage battery capacity are calculated. The operation specifications are adjusted according to a predetermined operation map based on the above, and a controller for automatically controlling and operating the refrigeration apparatus is provided, so that necessary electric power is calculated based on the operation conditions input before the operation is started, By adjusting the operation specifications from the required power and storage battery capacity, if there is a margin in the storage battery capacity, operating with high efficiency giving priority to energy consumption efficiency while maintaining the product temperature, and the storage battery capacity has decreased Can automatically control the refrigeration apparatus to operate while reducing power consumption. Therefore, it is possible to prevent the suspension of the operation of the refrigeration apparatus due to a decrease in the capacity of the storage battery during operation, and to maintain and improve the reliability of the transport refrigeration apparatus by maintaining the product temperature of the luggage.

  Furthermore, the transport refrigeration apparatus of the present invention is the transport refrigeration apparatus, wherein, when the storage battery capacity is larger than the required power, the controller operates the refrigeration apparatus with a maximum efficiency operation specification, and the storage battery capacity Is smaller than the required power, the refrigeration apparatus can be operated with power-saving operation specifications with reduced power consumption.

  According to the present invention, when the storage battery capacity is larger than the required power, the controller operates the refrigeration apparatus with the highest efficiency operation specification, and when the storage battery capacity is smaller than the required power, the power consumption operation specification with reduced power consumption is achieved. Since the refrigeration unit can be operated, if the storage battery capacity is larger than the required power and the storage battery capacity is sufficient, the refrigeration unit is operated with the highest efficiency operation specifications to prioritize the energy consumption efficiency and the storage battery capacity is required When it becomes smaller than the electric power, the refrigeration apparatus can be continuously operated at least during the operation time input before the operation starts by operating with the power saving operation specification with reduced power consumption. Therefore, it is possible to prevent the operation of the refrigeration apparatus from being stopped due to a decrease in storage battery capacity during operation, and to reliably maintain the product temperature of the luggage.

  Furthermore, the transport refrigeration apparatus according to the present invention is the transport refrigeration apparatus according to any one of the above-described transport conditions, in addition to the set temperature, the operation time, etc. One or a plurality of these can be input.

  According to the present invention, any one or more of the number of collection / delivery locations, date / time, weather, etc. can be input as the operating conditions in addition to the set temperature, operating time, etc. When calculating the required power during operation, the required power during operation time is calculated with higher accuracy by entering the number of collection and delivery locations, date / time, weather, etc. in addition to the set temperature and operation time. It becomes possible. Therefore, it is possible to perform automatic control operation with high accuracy so that the refrigeration apparatus does not stop operation due to a decrease in storage battery capacity during operation.

  Furthermore, in the transport refrigeration apparatus of the present invention, in any one of the transport refrigeration apparatuses described above, the power-saving operation specifications are (1) reduction of the compressor drive frequency, and (2) defrost operation when the operation is almost finished. (3) Thermo-off temperature rise shift during thermo-on / off operation, (4) Decrease in the number of rotations and / or the number of operation of condenser fan and evaporator fan, (5) Stop or intermittent operation of evaporator fan during thermo-off It is characterized in that it is a single operation or a plurality of combination operations by any one of the operation and (6) the quick cooling operation mode when the interior temperature rises due to the opening of the Bamboo door or the like.

  According to the present invention, the power-saving operation specifications are (1) reduction of compressor drive frequency, (2) deferred operation of defrost operation when operation is almost finished, and (3) increase shift of thermo-off temperature during thermo-on / off operation. , (4) Reducing the number of rotations and / or operating number of condenser fans and evaporator fans, (5) Stopping or intermittent operation of the evaporator fan while the thermo is off, (6) Rapid when the internal temperature rises due to the opening of the Bamboo door, etc. Since the cooling operation mode is either a single operation or a plurality of combined operations, when the storage battery capacity becomes smaller than the required power, any one of the above (1) to (6) By operating the refrigeration system with multiple combined operations, power consumption can be reduced and power consumption can be reduced. Kill. Therefore, the operation of the refrigeration apparatus can be reliably continued during the operation time to prevent the suspension of the operation due to a decrease in the capacity of the storage battery, and the temperature of the goods can be maintained.

  Furthermore, the transport refrigeration apparatus of the present invention is the above transport refrigeration apparatus, wherein the controller includes at least a display unit that displays the remaining operation time of the operation time and the storage battery capacity, and the storage battery capacity is the An alarm unit that warns the vehicle manager when the required power is reduced is provided.

  According to the present invention, the controller includes a display unit that displays at least the remaining operation time of the operation time and the storage battery capacity, and an alarm unit that warns the vehicle manager when the storage battery capacity falls below the required power. During operation, the vehicle administrator can always collect and deliver while confirming the remaining operation time of the operation time and the capacity of the storage battery by displaying on the display, and if the capacity of the storage battery falls below the required power When the abnormality mark is lit or blinking, an alarm sound is generated, or when connected to a remote monitoring system, the vehicle manager can be made aware of the situation by a notification through the system. Therefore, the vehicle manager determines whether the storage battery capacity is insufficient based on the display information on the display section and the alarm on the alarm section, and takes measures such as charging the storage battery as necessary, thereby reducing the capacity of the storage battery. It is possible to prevent the suspension of operation and reliably maintain the temperature of the luggage.

  Furthermore, the transport refrigeration apparatus according to the present invention can automatically or arbitrarily cancel the automatic control operation when any of the above-described transport refrigeration apparatuses is supplied with power from the commercial power supply during the automatic control operation by the controller. It is made possible.

  According to the present invention, when power is supplied from a commercial power source during automatic control operation by the controller, the automatic control operation can be canceled automatically or arbitrarily. For example, power is supplied from the commercial power source during operation. If automatic control operation is no longer necessary, or if it is determined that automatic control operation is unnecessary in view of storage battery capacity and remaining operation time, automatic control operation is canceled automatically or arbitrarily, and high-efficiency operation is performed. Can be switched to. Therefore, by switching operation automatically or arbitrarily according to the presence or absence of commercial power and operating conditions and continuing the operation of the refrigeration system, priority is given to maintaining the product temperature of the luggage, and the operation is stopped due to a decrease in the capacity of the storage battery. Can be prevented.

  According to the present invention, if necessary power is calculated based on the operation conditions input before the start of operation and the operation specifications are adjusted from the necessary power and the storage battery capacity, the energy consumption can be reduced. Priority is given to efficiency, and when the storage battery capacity has been reduced, the refrigeration system can be automatically controlled to operate while suppressing power consumption. The reliability of the transport refrigeration apparatus can be maintained and improved by preventing the apparatus from being stopped and maintaining the temperature of the goods.

1 is a perspective view of a state in which a transport refrigeration apparatus according to an embodiment of the present invention is mounted on a refrigeration vehicle. FIG. 2 is a system configuration diagram of a drive system of the transport refrigeration apparatus shown in FIG. 1. FIG. 3 is a partial view of a control flow during automatic control operation of the transport refrigeration apparatus shown in FIG. 2. FIG. 4 is a remaining partial view of a control flow during automatic control operation of the transport refrigeration apparatus shown in FIG. 3.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4.
FIG. 1 shows a perspective view of a transport refrigeration apparatus according to an embodiment of the present invention mounted on a refrigeration vehicle, and FIG. 2 shows a system configuration diagram of its drive system.
The refrigeration vehicle 1 is equipped with a transport refrigeration device (refrigeration unit) 3 that cools or heats the inside of a door-equipped van body (cooling compartment) 2 loaded on the loading platform side to maintain the inside temperature at a set temperature. ing. The transport refrigeration apparatus 3 is an integrated unit that is mounted on the front surface of a van body (cooler) 2.

  The transport refrigeration apparatus 3 includes a known refrigeration cycle including a compressor (compressor), a condenser, an expansion valve, an evaporator, and the like (not shown). The condenser and the evaporator each have a condenser for circulating outside air to the condenser. An evaporator fan that circulates the internal air through the fan and the evaporator is attached. The compressor, the condenser fan and the evaporator fan are driven by a compressor motor, a condenser fan motor and an evaporator fan motor (hereinafter collectively referred to as a motor load) 4.

  For the motor load 4, as shown in FIG. 2, a storage battery (battery) 11 for driving the refrigeration apparatus, a commercial power supply 12 of a three-phase AC200V, a household power supply 13A of a single-phase AC200V, or a single-phase AC100V Drive power can be selectively supplied via the refrigeration apparatus drive circuit 10 from any one of the household power supplies 13B (hereinafter, these may be simply referred to as commercial power supplies).

FIG. 2 shows a schematic system configuration diagram of the drive system.
Electric power from a power source such as a storage battery (battery) 11, a commercial power source 12, and household power sources 13A and 13B is supplied to the refrigeration apparatus drive circuit 10 via the power system 14, and the electric power is further supplied to the refrigeration apparatus. The driving power is controlled through a driving circuit 10 and supplied to a motor load 4 such as a compressor motor, a condenser fan motor, an evaporator fan motor or the like.

  The power system 14 has a three-phase AC 200V power system as a standard system because of the relationship of the operating voltage with respect to the compressor. For this reason, a power conversion device (power conversion means) 15 for converting the single-phase AC 100V into, for example, a single-phase AC 200V is interposed in the electric power system from the single-phase AC 100V household power supply 13B. The power converter 15 can be configured by a step-up transformer that transforms a single-phase AC 100V into a single-phase AC 180V to 220V. The power converter 15 may be provided on either the refrigerated vehicle / transport refrigeration apparatus 40 side or the building 50 side (household power supply 12 side).

  The power supply circuits from the commercial power supply 12 and the household power supplies 13A and 13B are connected to the commercial power supply 12 when the commercial power supply 12 of three-phase AC200V or the single-phase AC200V household power supply 13A is prepared on the building 50 side. By inserting a three-pole four-wire three-phase power plug provided at the other end of the power cable into a receptacle for a three-phase commercial power source installed on the refrigeration vehicle / transport refrigeration apparatus 40 side A power supply circuit from the commercial power supply 12 can be configured.

  On the other hand, when there is no commercial power supply 12 of three-phase AC200V or household power supply 13A of single-phase AC200V on the building 50 side, a power converter is connected to a suitable two-phase outlet of a single-phase AC100V power supply 13B installed on the building 50 side. The above-mentioned three-pole four-wire type three-phase power plug provided at the end of the output-side power cable from the power converter 15 by connecting the power cord from 15 directly or via an extension cord A power supply circuit from the household power supply 13B can be configured by inserting the same power plug into the receptacle for the three-phase commercial power supply installed on the refrigeration vehicle / transportation refrigeration apparatus 40 side. The power cable and the power plug can be connected using, for example, R phase, S phase, and ground.

  A storage battery (battery) 11 for driving the refrigeration apparatus is mounted at an appropriate position of the refrigeration vehicle 1 and connected to the power system 14 via the battery charging / discharging device 16. The commercial power supply 12 and the household power supplies 13A and 13B are The power supply is used as a power source for enabling the transport refrigeration apparatus 3 to operate in a situation where it cannot be used. The storage battery 11 can be charged by either the commercial power source 12 or the household power sources 13A and 13B. The power system 14 also includes a power source discriminating device (power source) for automatically discriminating whether the power source connected to the refrigerated vehicle / transport refrigeration unit 40 side is the commercial power source 12 or the household power sources 13A and 13B. Discriminating means) 17 is connected. The power source discriminating device 17 is configured to transmit the discriminated power source type signal to the controller 18.

  The controller 18 includes a power source discrimination signal from the power source discrimination device 17, an open / close signal from the door opening / closing switch 19 of the van body 2 with a door, an outside air temperature sensor, an internal temperature sensor, a storage battery capacity detection sensor, etc. Refrigeration apparatus drive circuit 10 based on the operation state detection signal from the operation state detection sensor group 20) and the input information from the controller operation panel 21 installed in the cabin of the refrigerated vehicle 1. In addition, the battery charging / discharging device 16 is controlled.

Charging of the storage battery 11 is controlled by the controller 18 and is configured to be executed through the battery charging / discharging device 16 as follows.
When the refrigeration vehicle 1 is stopped and the transport refrigeration apparatus 3 is connected to the commercial power source 12 or the household power source 13A and is operated, it is determined that the storage battery 11 needs to be charged because the power capacity is sufficient. Then, constant voltage and constant current charging is executed with power from the power system 14 via the battery charging / discharging device 16. On the other hand, when the connected power source is the household power source 13B, there is a possibility that the breaker may fall due to insufficient power capacity. Therefore, it is determined whether or not the internal temperature has reached the set temperature. The charging is postponed, and charging is performed with the voltage or current limited only when the internal temperature reaches the set temperature and there is a margin in the power supply capacity.

  A controller operation panel 21 installed in the cabin is connected to the controller 18, and at least operation conditions such as set temperature and operation time can be input via the operation panel 21. . As operation conditions, in addition to the set temperature and operation time, it is desirable to input one or more of the number of collection and delivery locations, date / time, weather, etc., in order to increase the calculation accuracy of the required power during operation. The operation panel 21 is provided with a display unit 22 that displays the remaining operation time of the operation time and the capacity of the storage battery 11, and an alarm unit 23 that warns the vehicle manager when the storage battery capacity falls below the required power. Yes.

  Further, the controller 18 operates the operating conditions such as the set temperature, operation time, number of collection / delivery places, date / time, weather, etc. input from the operation panel 21, the outside air temperature detected by the operating state detection sensor group 20, the inside Based on the operation state detection signal such as temperature and storage battery capacity and the door opening / closing signal from the door opening / closing switch 19 of the van body 2 with door, the necessary power (= required capacity) during the operation period is calculated and calculated. The operation specification is adjusted by a predetermined operation map based on the required power and the storage battery capacity, and the transport refrigeration apparatus 3 is controlled automatically by controlling the refrigeration apparatus drive circuit 10.

The automatic control operation function of the transport refrigeration apparatus 3 by the controller 18 will be described in detail below using the control flowcharts shown in FIGS. 3 and 4.
The controller operating panel 21 installed in the cabin before the start of operation is selected as described above for operation conditions such as set temperature, operation time, number of collection / delivery places, date / time, weather, etc., and automatic operation control. It is input from. When the operation by the refrigerated vehicle 1 is started, first, in step S1, the operation condition and the selection of the automatic operation control input from the operation panel 21 are read, and the process proceeds to step S2.

  In step S2, it is determined whether or not automatic driving control is performed. If "valid (automatic)" is selected, "YES" is determined and the process proceeds to step S4. If "invalid" is selected, It is determined as “NO”, and the process proceeds to step S3. In step S3, the transport refrigeration apparatus 3 is the highest power source using a commercial power source (the commercial power source 12 or the household power sources 13A and 13B) so that the inside temperature becomes the set temperature regardless of the operation conditions, the storage battery capacity, and the like. It will be driven with efficiency. On the other hand, if it is determined in step S2 that “valid (automatic)” is selected, the process proceeds to step S4, and it is determined whether or not the battery is operating. If "YES" is determined, the process proceeds to step S6. If "NO" is determined, the commercial power supply is determined and the process proceeds to step S3.

  In step S6, the operating state detection signals such as the outside air temperature, the inside temperature and the storage battery capacity detected by the operating state detection sensor group 20 from step S5, the door opening / closing signal from the door opening / closing switch 19 of the van body 2 with a door, and the like are read. Then, necessary electric power (= required capacity) during operation is calculated from these operation state detection signals and the operation conditions read in step S1. The required power is calculated based on a calculation table (see FIG. 3) set in advance. When the calculation of the required power is completed in step S6, the remaining operation time and the storage battery capacity at that time are displayed on the display unit 22 of the operation panel 21 in step S7, and then the process proceeds to step S8.

  In step S8, based on the required power calculated in step S7 and the capacity of the storage battery 11, it is determined whether or not the storage battery capacity is larger than the required power in order to adjust the operation specifications according to a predetermined operation map. Determine (storage battery capacity> required power?). Here, when it determines with "YES", it transfers to step S9, and operates the transport refrigeration apparatus 3 by the storage battery 11 as a power supply with the highest efficiency so that the inside temperature may become set temperature. On the other hand, when it is determined as “NO”, the process proceeds to step S10, where the vehicle manager (user) is warned via the alarm unit 23 of the operation panel 21 that the storage battery capacity is lower than the required power. In S11, the transport refrigeration apparatus 3 is operated with the power-saving operation specification with reduced power consumption.

The operation in the power saving operation specification is a single operation or a plurality of combination operations according to any one of the following (1) to (6).
(1) Reduction of compressor drive frequency (2) Post-off of defrost operation when operation is almost finished (3) Increase shift of thermo-off temperature during thermo-on / off operation (4) Rotation speed of condenser fan and evaporator fan and / or Reduction in the number of operating units (5) Stopping or intermittent operation of the evaporator fan while the thermo is off (6) Bypassing the rapid cooling operation mode when the internal temperature rises due to the opening of the Bamboo door, etc.

  After adjusting the operation specifications of the transport refrigeration apparatus 3 based on the predetermined operation map based on the required power and the storage battery capacity through steps S8 to S11, the process proceeds to step S12, and the operation time timer, the collection / delivery place Subtract number count etc. Thereafter, the process proceeds to step S13, and it is determined whether or not the operation time timer is zero. If “NO”, the process returns to steps S4 and S5 to repeat the above operation. If “YES”, the process proceeds to step S14. Transition. In step S14, it is determined whether or not the number of collection and delivery locations is zero. If “NO”, the process returns to steps S4 and S5 to repeat the above operation. If “YES”, the process proceeds to step S15. To finish driving.

  As described above, before starting the operation, the controller 18 calculates necessary power from at least the operation conditions such as the set temperature and operation time input from the operation panel 21 and the operation conditions and the operation state detection signal. At the same time, the operation specifications are adjusted by a predetermined operation map based on the required power and the capacity of the storage battery 11, and the refrigeration apparatus drive circuit 10 is controlled to automatically control the transport refrigeration apparatus 3. I have. Further, when power is supplied from the commercial power supply 12 or the like during the operation by the automatic control operation described above, the automatic control operation can be automatically or arbitrarily canceled and switched to the high efficiency operation.

Thus, according to the present embodiment, the following operational effects are obtained.
The transport refrigeration apparatus 3 is operated with electric power supplied from a storage battery (battery) 11 when the refrigeration vehicle 1 is running. On the other hand, when the frozen vehicle 1 is stopped, if the commercial power source 12 or the household power sources 13A and 13B can be used, the vehicle is operated with the power from the commercial power source 11 or the household power sources 13A and 13B. At this time, if the storage battery (battery) 11 needs to be charged, the storage battery 11 can be charged via the battery charging / discharging device 16.

  Before starting operation, the controller 10 of the transport refrigeration apparatus 3 is input with operating conditions such as set temperature, operation time, number of collection and delivery places, date / time, weather, etc. from the operation panel 21 in the cabin. A detection signal such as the outside air temperature, the inside temperature, the storage battery capacity, and the like is input from the operating state detection sensor group 20 such as an outside temperature sensor, an inside temperature sensor, and a storage battery capacity detection sensor, and the door opening / closing switch 19 of the van body 2. The open / close signal from is input. The controller 10 calculates electric power (= required capacity) required during operation based on these operation conditions and operation state detection signals, and an operation map that is determined in advance based on the required electric power and storage battery capacity. The operation specifications are adjusted by the above, and the refrigeration apparatus drive circuit 10 is controlled to automatically control the transport refrigeration apparatus 3.

  In other words, when the storage battery capacity is larger than the required power, the transport refrigeration apparatus 3 is operated with the maximum efficiency operation specification, and when the storage battery capacity is smaller than the required power, the power consumption is reduced by adjusting the power consumption adjusted in advance. Operating specifications, that is, (1) Reduction of compressor drive frequency, (2) Deferred operation when operation is almost finished, (3) Increased shift of thermo-off temperature during thermo-on / off operation, (4) Capacitor Reducing the number of rotations and / or operating number of fans and evaporator fans, (5) Stopping or intermittent operation of the evaporator fan while the thermo is off, (6) Bypassing the rapid cooling operation mode when the internal temperature rises due to the opening of the banboti door, etc. The vehicle is operated by any one of the above or a combination operation.

  Therefore, according to the present embodiment, the necessary power is calculated based on the operation conditions input before the start of operation, and the operation specifications are adjusted from the necessary power and the storage battery capacity, so that the capacity of the storage battery 11 has a margin. In this case, operation is performed with high efficiency by giving priority to energy consumption efficiency while maintaining the product temperature, and when the capacity of the storage battery 11 has been reduced, operation is performed at least by operating with power-saving operation specifications while suppressing power consumption. During the operation time input before the start, the transport refrigeration apparatus 3 can be continuously controlled automatically. For this reason, the operation of the transport refrigeration apparatus 3 can be prevented from being stopped due to a reduction in the capacity of the storage battery 11 during operation, and the reliability of the transport refrigeration apparatus 3 can be maintained and improved by maintaining the article temperature. .

  In addition to the set temperature and operating time, any one or more of the collection / delivery location, date / time, weather, etc. are entered as operating conditions, so it is necessary to operate based on the operating conditions. When calculating electric power, it becomes possible to calculate the required electric power during operation time with higher accuracy. Therefore, the transport refrigeration apparatus 3 can be automatically controlled with high accuracy so that the transport refrigeration apparatus 3 does not stop operation due to a decrease in capacity of the storage battery 11 during operation.

  In addition, when the capacity of the storage battery 11 decreases, the power consumption can be surely reduced by operating the transport refrigeration apparatus 3 by any one of the above (1) to (6) or a plurality of combined operations. Thus, the transport refrigeration apparatus 3 can be operated with the power saving operation specification. For this reason, during the operation time, the transport refrigeration apparatus 3 can be surely continued to be operated to prevent the suspension of the operation due to a decrease in the capacity of the storage battery 11, and the product temperature of the luggage can be maintained.

  Further, the controller operation panel 21 provided in the cabin has a display unit 22 for displaying at least the remaining operation time of the operation time and the storage battery capacity, and vehicle management when the capacity of the storage battery 11 is lower than the required power. Since a warning unit 23 for issuing a warning to a person (user) is provided, the vehicle manager always collects and delivers work while confirming the remaining operation time of the operation time and the capacity of the storage battery by displaying on the display unit 22 during operation. When the capacity of the storage battery 11 is lower than the required power, the alarm unit 23 lights or blinks, an alarm sound is generated, or when connected to a remote monitoring system, the system The vehicle manager can be made aware of the situation through the notification. As a result, the vehicle manager determines that the capacity of the storage battery 11 is insufficient, etc., and takes measures such as charging the storage battery 11 as necessary, thereby preventing operation stop due to a decrease in the capacity of the storage battery 11 and ensuring The product temperature can be maintained.

  In the present embodiment, when the power is supplied from the commercial power supply 12 or the household power supplies 13A and 13B during the automatic control operation by the controller 18, the automatic control operation can be automatically or arbitrarily canceled. For this reason, for example, when the automatic control operation becomes unnecessary by supplying power from the commercial power source 12 or the like during the operation, or it is determined that the automatic control operation is unnecessary in view of the capacity of the storage battery 11 and the remaining operation time. In this case, the automatic control operation can be canceled automatically or arbitrarily and switched to the high efficiency operation. Accordingly, the battery 11 is switched while giving priority to maintaining the product temperature of the luggage by switching the operation automatically or arbitrarily according to the presence / absence of the commercial power source 12 or the like and the operating condition, and continuing the operation of the transport refrigeration apparatus 3. It is possible to prevent the operation from being stopped due to a decrease in the capacity.

  In addition, this invention is not limited to the invention concerning the said embodiment, In the range which does not deviate from the summary, it can change suitably. For example, in the above-described embodiment, when the capacity of the storage battery 11 is reduced, the transport refrigeration apparatus 3 is operated in a power-saving manner by any one of the above-mentioned power-saving operation specification items (1) to (6) or a plurality of combined operations. Although the operation is performed according to the specification, the items of the power saving operation specification may be increased step by step according to the remaining capacity of the storage battery 11.

  In order to detect the operating state, an outside air temperature sensor is provided to detect the outside air temperature. However, the outside air temperature sensor is omitted, and the refrigeration system is always replaced by the detection value of the high pressure sensor. As a result, the outside air temperature sensor can be omitted, and the cost can be reduced.

1 Refrigeration vehicle 2 Van body (cooling room)
3 Transport Refrigeration Equipment 10 Refrigeration Equipment Drive Circuit 11 Storage Battery (Battery)
12 Commercial power supply 13A Household power supply (commercial power supply)
13B Household power (commercial power)
18 Controller 21 Controller operation panel 22 Display unit 23 Alarm unit

Claims (6)

In a transport refrigeration system operated with either a commercial power source or a storage battery mounted for a refrigeration system as a power source,
Before starting the operation, at least operation conditions such as set temperature and operation time are input, and necessary power is calculated from the operation conditions and the operation state, and predetermined based on the necessary power and the storage battery capacity. A transport refrigeration apparatus comprising a controller that adjusts operation specifications according to an operation map that is provided and automatically controls the refrigeration apparatus.   When the storage battery capacity is larger than the required power, the controller operates the refrigeration apparatus with the highest efficiency operation specification, and when the storage battery capacity is smaller than the required power, the power consumption operation specification suppresses power consumption. The transport refrigeration apparatus according to claim 1, wherein the refrigeration apparatus is operable.   3. The operation condition can be set to any one or more of a collection / delivery place number, date / time, weather, etc. in addition to a set temperature, an operation time, and the like. The transport refrigeration apparatus described in 1. The power saving operation specifications are as follows:
(1) Reduction of compressor drive frequency (2) Post-off of defrost operation when operation is almost finished (3) Increase shift of thermo-off temperature during thermo-on / off operation (4) Rotation speed of condenser fan and evaporator fan and / or Reduction in the number of operations (5) Evaporator fan operation stop or intermittent operation during thermo-off (6) Single operation or multiple combination operation by either seeing off the rapid cooling operation mode when the internal temperature rises due to the opening of the Bamboo door, etc. The transport refrigeration apparatus according to claim 2 or 3, wherein the transport refrigeration apparatus is provided.   The controller includes a display unit that displays at least the remaining operation time of the operation time and the storage battery capacity, and an alarm unit that warns a vehicle manager when the storage battery capacity falls below the required power. The transport refrigeration apparatus according to any one of claims 1 to 4, wherein The transportation according to any one of claims 1 to 5, wherein when the power is supplied from the commercial power source during the automatic control operation by the controller, the automatic control operation can be automatically or arbitrarily canceled. Refrigeration equipment.

Images