JP2011080608A - Warming operation method of constant-temperature transporting device, and constant-temperature transporting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a warming operation method of a constant-temperature transporting device, and the constant temperature transporting device capable of combining pull-up performance and temperature controllability, and performing a warming operation by using an optimum warming source on the basis of whether a constant-temperature transport vehicle runs or stops (engine is stopped). <P>SOLUTION: In this warming operation method of the constant-temperature transporting device including a plurality of warming sources, and warming an inside temperature to a set temperature by operating any of the warming sources, the plurality of warming sources are combined to be operated when the difference between the inside temperature and the set temperature is the set temperature or higher in the warming operation, and the plurality of warming sources are combined to be operated when a time from thermo-on to thermo-off is a set time or higher, when the temperature difference is within the set temperature, and either one of the warming sources is operated when the time is within the set time. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a heating operation method of a constant temperature transport apparatus and a constant temperature transport apparatus for transporting articles at a constant temperature.

  In order to transport the goods at a constant temperature, it is necessary to perform a cooling operation using a refrigeration system when the outside air temperature is high, such as in summer, and to perform a heating operation when the outside air temperature is low, such as in winter. . As a heating source for heating operation of the constant temperature transport device, a hot gas bypass heating operation or a non-condensing heating operation is performed on a refrigeration apparatus including a traveling engine of a constant temperature transport vehicle or a compressor driven by a commercial power source. Three types are used: refrigerant heating by hot water, warm water warming by circulating cooling water of a traveling engine of a constant temperature transport vehicle, and electric heater warming by an electric heater using electric power from a commercial power source.

  In such a constant temperature transport device, at the start of the heating operation, in order to improve the pull-up performance when the inside temperature is heated to the set temperature, the refrigerant heating + warm water heating or the refrigerant heating + electric heater heating is performed. In some cases, two heating sources were used in combination. On the other hand, in Patent Document 1, a cooling dehumidifier, a reheater, and an electric heater are provided in a temperature-controlled room. During high-temperature operation, the electric heater is turned on / off, and during operation at a normal temperature setting temperature. Depending on the deviation between the room temperature and the set temperature, the electric heater is operated, the cooling dehumidifier is operated, or the cooling dehumidifier is combined with the reheater, and the room temperature is controlled within the set range. Things are presented.

  Further, Patent Document 2 discloses a heating mechanism including a cooling unit configured with a refrigeration system using a compressor driven by a vehicle engine, and a heating unit configured using cooling water of the engine. With a refrigeration unit, the temperature difference between the specified temperature difference from the freezing process to the cold storage temperature process and the predetermined temperature difference from the cold storage temperature process to the freezing process, and from the warming process to the cold storage temperature process Temperature control in the freezer is performed between the temperature difference between the predetermined temperature difference and the temperature difference between the cold insulation temperature process and the warming process, and the temperature control in the freezer is performed at a temperature near the set temperature. Has been proposed to reduce the number of times the temperature control is shifted between the refrigeration process and the warming process, thereby reducing the number of times the compressor is turned on / off.

JP-A-2-23819 (see FIGS. 1 to 3) Japanese Patent Laid-Open No. 5-203310 (see FIGS. 1 to 3)

  However, in any of the above-described conventional devices, the temperature control is performed by controlling the heating source on / off while maintaining the heating method determined in consideration of the heating capability at the time of mounting. Therefore, when two heating sources are used in combination or a heating source with a high heating capability is used to improve pull-up performance, overshoot near the set temperature increases and temperature control is performed. There was a problem that the sex deteriorated. On the other hand, when the heating source is determined with emphasis on temperature controllability, depending on the setting of the heating source, the heating capacity may be low and the pull-up performance may be reduced, so both the pull-up performance and temperature controllability are compatible. It was the current situation that was not doing well.

  In addition, using a heating source with a high heating capacity to increase the overshoot near the set temperature will cause adverse effects on cabin heating if engine cooling water is used for cabin heating. There was no problem. Furthermore, in a constant temperature transport vehicle, the available heating source varies depending on whether or not the vehicle driving engine is operated. Therefore, these points should be taken into account when the heating source is selectively rearranged or switched. It was necessary to set a heating source.

  The present invention has been made in view of such circumstances, and can achieve both pull-up performance and temperature controllability, and is optimal depending on whether the constant temperature transport vehicle is running or stopped (when the engine is stopped). It is an object of the present invention to provide a heating operation method for a constant temperature transport apparatus and a constant temperature transport apparatus that can perform a heating operation using a heating source.

In order to solve the above-described problems, the heating operation method and the constant temperature transport apparatus of the constant temperature transport apparatus of the present invention employ the following means.
That is, the heating operation method of the constant temperature transport apparatus according to the present invention includes a plurality of heating sources, and operates any one of the heating sources to heat the interior temperature to the set temperature. In the temperature operation method, during the heating operation, when the difference between the internal temperature and the set temperature is equal to or higher than the set temperature, the plurality of heating sources are operated in combination, and when the temperature difference is within the set temperature, When the time from the thermo-on to the thermo-off is longer than the set time, the heating source is operated in combination, and when the time is within the set time, one of the heating sources is set. And driving.

  According to the present invention, during the heating operation, when the difference between the internal temperature and the set temperature is equal to or higher than the set temperature, the operation is performed by combining a plurality of heating sources, and when the temperature difference is within the set temperature, If the time until the thermo-off is longer than the set time, operate with multiple heating sources combined. If the time is within the set time, operate with one of the heating sources. Therefore, if the temperature difference between the internal temperature and the set temperature is large, or if it takes time from thermo-on to thermo-off, combine multiple heating sources and increase the heating capacity. Can quickly heat the internal temperature to the set temperature, while after the internal temperature reaches the set temperature, the heating capacity is lowered by reducing the overshoot by using one heating source. By the temperature It is possible to increase the your gender. Therefore, both the pull-up performance at the start of the heating operation and the temperature control performance after reaching the set temperature can be improved and both can be achieved. Moreover, since the inside of a store | warehouse | chamber is not heated too much more than necessary, the saved calorie | heat amount can be used for cabin heating etc. and can be used effectively.

  Furthermore, the heating operation method of the constant temperature transport apparatus of the present invention is the above-described warming operation method of the constant temperature transport apparatus, when operating with any one of the heating sources, the internal temperature and the set temperature When the deviation is within the set range, it is operated with the heating source with the higher heating capability.When the deviation exceeds the set range, the temperature controllability is higher. The operation is performed by a heating source.

  According to the present invention, when operating with any one of the heating sources, the deviation between the internal temperature and the set temperature is detected, and when the deviation is within the set range, the heating with the higher heating capability is detected. When operating with a temperature source and the deviation exceeds the set range, operation is performed with a heating source with higher temperature controllability. If the deviation between the internal temperature and the set temperature is within the set range, the operation is continued with the heating source with the higher heating capability, and if the deviation exceeds the set range, the higher temperature controllability is applied. By switching to operation with a temperature source and improving temperature controllability, the internal temperature can always be maintained and controlled within the set range. Therefore, the temperature control performance can be further improved.

  Furthermore, the heating operation method of the constant temperature transport device of the present invention is the heating operation method of any of the above constant temperature transport devices, wherein the heating source is refrigerant heating by a refrigeration system, warm water heating by engine cooling water, There are three types of electric heater heating by an electric heater, and when the constant temperature transport vehicle is running, refrigerant heating and hot water heating in the three heating sources are used, and the constant temperature transport vehicle and the engine are stopped. Is characterized in that refrigerant heating and electric heater heating in the three heating sources are used.

  According to the present invention, there are three heating sources: refrigerant heating by the refrigeration system, warm water heating by the engine cooling water, and electric heater heating by the electric heater, and when the constant temperature transport vehicle travels, the three heating sources Refrigerant warming and hot water warming are used, and when the constant temperature transport vehicle and the engine are stopped, the refrigerant warming and the electric heater warming in the three warming sources are used. Therefore, the three heating sources can be properly used according to the use state of the constant temperature transport vehicle, and the interior can be heated to the set temperature. In other words, when a constant temperature transport vehicle is running, heating capacity, efficiency, and temperature controllability can be ensured by using refrigerant heating and hot water heating using a refrigeration system driven by the engine and engine cooling water. Since the engine cooling water cannot be used when the constant temperature transport vehicle and the engine are stopped, the heating capacity and the temperature control are performed by using the refrigerant heating by the refrigeration system driven by the commercial power source and the electric heater. Sex can be secured. Therefore, in any case, pull-up performance and temperature control performance can be ensured and both can be achieved.

  Furthermore, the heating operation method of the constant temperature transport device of the present invention is the above-described heating operation method of the constant temperature transport device, when the constant temperature transport vehicle is running when operating with any one of the heating sources. When the deviation between the internal temperature and the set temperature is within the set range, the operation is performed by the heating source having the higher heating capacity of either the refrigerant heating or the warm water heating, and the deviation is within the set range. If the temperature exceeds the above, the operation is performed by the heating source having the higher temperature controllability of either the refrigerant heating or the warm water heating.

  According to the present invention, when operating with any one heating source, when the constant temperature transport vehicle is running, if the deviation between the internal temperature and the set temperature is within the set range, the refrigerant heating and the hot water heating are performed. If operation is performed with the warming source with the higher warming capacity, and the deviation exceeds the set range, the warming source with the higher temperature controllability, either refrigerant warming or warm water warming When the constant temperature transport vehicle is running, if the deviation between the internal temperature and the set temperature is within the set range, continue the operation with the heating source with the higher heating capacity, If the deviation exceeds the set range, the internal temperature can always be maintained and controlled within the set range by switching to operation with a heating source with higher temperature controllability and increasing the temperature controllability. . Therefore, the temperature control performance when the constant temperature transport vehicle is running can be further improved.

  Furthermore, in the heating operation method of the constant temperature transport apparatus of the present invention, in the heating operation method of the constant temperature transport apparatus, when operating with any one of the heating sources, the constant temperature transport vehicle and the engine are At the time of stoppage, when the deviation between the internal temperature and the set temperature is within the set range, the operation is performed by the heating source having the higher heating capacity of either the refrigerant heating or the electric heater heating, When the deviation exceeds the set range, the operation is performed by the heating source having the higher temperature controllability of either the refrigerant heating or the electric heater heating.

  According to the present invention, when operating with any one of the heating sources, when the constant temperature transport vehicle and the engine are stopped, if the deviation between the internal temperature and the set temperature is within the set range, If the heater is operated with the heating source with the higher heating capacity of the electric heater, and the deviation exceeds the set range, either the refrigerant heating or the electric heater heating with higher temperature controllability When the constant temperature transport vehicle and the engine are stopped, if the deviation between the inside temperature and the set temperature is within the set range, the heating with the higher heating capacity is performed. If the deviation continues beyond the set range, switch to the heating source with the higher temperature controllability and increase the temperature controllability to keep the internal temperature within the set range. Can be controlled. Therefore, the temperature control performance when the constant temperature transport vehicle is running can be further improved.

  Furthermore, the constant temperature transport apparatus according to the present invention includes a plurality of heating sources, and in the constant temperature transport apparatus that operates any one of the heating sources to warm the interior temperature to a set temperature, during the heating operation, When the difference between the internal temperature and the set temperature is equal to or higher than the set temperature, the operation is performed by combining a plurality of heating sources, and when the temperature difference is within the set temperature, the time from the thermo-on to the thermo-off depends on the time. When the time is equal to or longer than the set time, the controller is operated by combining a plurality of the heating sources, and when the time is within the set time, the controller is configured to perform the operation with any one of the heating sources. It is characterized by that.

  According to the present invention, during the heating operation, when the difference between the internal temperature and the set temperature is equal to or higher than the set temperature, the operation is performed by combining a plurality of heating sources, and when the temperature difference is within the set temperature, If the time until the thermo-off is longer than the set time, operate with multiple heating sources combined. If the time is within the set time, operate with one of the heating sources. Because it is equipped with a control device, when the temperature difference between the internal temperature and the set temperature is large, or when it takes time from thermo-on to thermo-off, combine multiple heating sources to increase the heating capacity. By doing this, the internal temperature can be quickly heated to the set temperature.On the other hand, after the internal temperature reaches the set temperature, the heating capacity is lowered by using a single heating source, and overshooting is reduced. By making it smaller , It is possible to increase the temperature controllability. Therefore, both the pull-up performance at the start of the heating operation and the temperature control performance after reaching the set temperature can be improved and both can be achieved. Moreover, since the inside of a store | warehouse | chamber is not heated too much more than necessary, the saved calorie | heat amount can be used for cabin heating etc. and can be used effectively.

  According to the heating operation method and the constant temperature transport device of the present invention, when the temperature difference between the inside temperature and the set temperature is large, or when it takes time from pull-up or thermo-on to thermo-off, the heating source is By operating in combination with multiple heating capacity, the internal temperature can be quickly heated up to the set temperature.On the other hand, after the internal temperature reaches the set temperature, the heating source is unified. By reducing the heating capacity and reducing the overshoot, the temperature controllability can be improved, so both the pull-up performance at the start of heating operation and the temperature control performance after reaching the set temperature are improved. Both can be achieved. Moreover, since the inside of a store | warehouse | chamber is not heated too much more than necessary, the saved calorie | heat amount can be used for cabin heating etc. and can be used effectively.

1 is a system configuration diagram of a constant temperature transport apparatus according to an embodiment of the present invention. It is a control flowchart figure which shows the heating operation method at the time of the constant temperature transport vehicle of the constant temperature transport apparatus shown in FIG. It is a control flowchart figure which shows the heating operation method when the constant temperature transport vehicle of the constant temperature transport apparatus shown in FIG. 1 stops (when an engine stops).

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3.
FIG. 1 is a system configuration diagram of a constant temperature transport apparatus according to an embodiment of the present invention.
The constant temperature transport apparatus 1 is mounted on a constant temperature transport vehicle 2 in which a cold / warm storage 3 having a heat insulating structure is mounted on a chassis, and cools or heats the inside of the cold / warm storage 3 to a set temperature. The constant temperature transport apparatus 1 includes a cooling / warming unit 6 installed in a cold / warm warehouse 3.

  The cooling / warming unit 6 includes a blower fan 7 that circulates the air in the cool / warm warehouse 3 to the air passage in the unit, an evaporator / refrigerant heating coil 8 disposed in the air passage, and a hot water coil. 9 and the electric heater 10, and the internal air circulated through the blower fan 7 can be cooled or heated by any of the evaporator / refrigerant heating coil 8, the hot water coil 9, and the electric heater 10. It is configured.

  The evaporator / refrigerant heating coil 8 forms a closed-cycle refrigerant circuit together with the first compressor 11 and the second compressor 12, the condenser 13, and the like that are connected in parallel to each other. It is composed. The evaporator / refrigerant heating coil 8 functions as an evaporator (evaporator) during the cooling operation and functions as a heating coil during the heating operation.

  The first compressor 11 is driven via a clutch by a traveling engine 5 mounted under the cabin 4 of the constant temperature transport vehicle 2, and the second compressor 12 is mounted under the chassis. Installed in the capacitor unit 15 and is driven by a motor driven by electric power fed from a commercial power supply via a power cable, so that either one is operated independently. It is configured.

  The refrigeration apparatus (refrigeration system) 14 operates either the first compressor 11 or the second compressor 12, and functions as an evaporator / refrigerant heating coil 8 as an evaporator and a condenser 13 as a condenser. The inside of the warehouse 3 can be cooled. Moreover, either the 1st compressor 11 or the 2nd compressor 12 is drive | operated, the hot gas refrigerant | coolant is directly introduce | transduced into the evaporator and refrigerant | coolant heating coil 8, and it heat-radiates and condenses in the inside of a store | warehouse | chamber. Either function as a hot gas condensing and heating coil for heating, or after depressurizing the hot gas refrigerant below the internal temperature saturation pressure by a pressure reducing valve or the like, introduce it into the evaporator / refrigerant heating coil 8 and dissipate heat there. Thus, it is configured to function as a hot gas non-condensing heating coil for heating the inside of the refrigerator, and to heat the inside of the cold / hot storage 3.

  The hot water coil 9 uses a cooling system 16 of the traveling engine 5 and circulates a part of the cooling water from the engine cooling system 16 via a cooling water pipe and a cooling water pump (not shown), thereby It is comprised so that the air in the warehouse 3 can be heated. Further, the electric heater 10 is configured to be able to heat the air in the cold / warm warehouse 3 by supplying the electric power fed to the connector 17 from the commercial power source via the power cable to the electric heater 10 through the electric wiring 18. Has been.

  In the constant temperature transport apparatus 1, when the constant temperature transport vehicle 2 travels (when the travel engine 5 is in operation), the refrigeration apparatus 14 is operated by the first compressor 11 driven by the travel engine 5, and the evaporator / refrigerant addition is performed. A heating operation by refrigerant heating using the heating coil 8 as a heating source, and a heating operation by heating warm water using the heating water coil 9 as a heating source by circulating the cooling water of the traveling engine 5 to the heating coil 9; Can be used. On the other hand, when the constant temperature transport vehicle 2 is stopped (when the traveling engine 5 is stopped), the refrigeration apparatus 14 is operated by the second compressor 12 driven by the commercial power source, and the evaporator / refrigerant heating coil 8 is connected to the heating source. The heating operation by the refrigerant heating used as the heating heater and the heating operation by the electric heater heating using the electric heater 10 energized from the commercial power source as the heating source can be used. To be controlled.

The heating operation when the constant temperature transport vehicle 2 travels (when the traveling engine 5 is in operation) uses the evaporator / refrigerant heating coil 8 as a heating source via the control device 19 as shown in FIG. The combination of the refrigerant heating and the warm water heating using the warm water coil 9 as a heating source is executed as follows.
When the heating operation is started in step S1, a temperature difference between the set temperature and the internal temperature is detected in step S2. Whether or not this temperature difference is within a preset temperature (for example, 5 ° C.) is determined in step S3. If NO, the process proceeds to step S4. If YES, the process proceeds to step S5. It is like that.

  If it is determined in step S3 that the temperature difference between the set temperature and the interior temperature is 5 ° C. or more, it is determined that the heating load is large, and the process proceeds to step S4 where heating by “warm water warming + refrigerant warming” is performed. After the operation is executed, the process returns to step S2. Thus, the constant temperature transport device 1 is heated by a combination of refrigerant heating using the evaporator / refrigerant heating coil 8 as a heating source and warm water heating using the hot water coil 9 as a heating source. On the other hand, if it is determined in step S3 that the temperature difference is within 5 ° C., the time from thermo-on to thermo-off is detected in step S5, and then in step S6, the time is within a set time (for example, 10 minutes). It is determined whether or not.

  If it is determined in step S6 that the time from the thermo-on to the thermo-off has exceeded 10 minutes, it is determined that the heating load is still large, and the process proceeds to step S7 where heating by “warm water warming + refrigerant warming” is performed. Operation is executed. Thereby, the constant temperature transport apparatus 1 continues the heating operation by the combination of warm water warming and refrigerant warming. If it is determined in step S6 that the time from the thermo-on to the thermo-off is within 10 minutes, the operation is switched to “warm water heating” using engine exhaust heat in step S8, and then the set temperature and the internal temperature in step S9. Deviation from is detected.

  Whether or not the deviation is within a set range (for example, ± 1 ° C.) is determined in step S10, and if it is within 1 ° C. (YES), the process proceeds to step S12 and the operation by “warm water warming” is continued. The On the other hand, if it exceeds the set range, the process proceeds to step S11, where the operation is switched to the operation by "refrigerant warming" having higher temperature controllability than the operation by "warm water heating", and the internal temperature is within the set range. To be controlled. When the constant temperature transport vehicle 2 travels, the heating operation is performed by repeating the above operation every predetermined time.

  Therefore, when the constant temperature transport vehicle 2 is traveling (when the traveling engine 5 is in operation), if the difference between the set temperature and the internal temperature is large or if it takes time from the thermo-on to the thermo-off, the heating source is “warm water”. Since “warming + refrigerant warming” is performed and the heating capacity is increased, the internal temperature can be quickly reached the set temperature. After the internal temperature reaches the set temperature, the heating source is reduced to one and the heating capacity is lowered. If the deviation between the internal temperature and the set temperature is within the set range, When the temperature exceeds the set range, it is switched to “refrigerant warming”. Therefore, by reducing the overshoot and improving the temperature controllability, the internal temperature can always be maintained and controlled within the set range.

Further, the heating operation when the constant temperature transport vehicle 2 is stopped (when the traveling engine 5 is stopped) is connected to the evaporator / refrigerant heating coil 8 via the control device 19 as shown in FIG. The combination of the refrigerant heating and the electric heater heating using the electric heater 10 as a heating source is executed as follows.
When the heating operation is started in step S21, a temperature difference between the set temperature and the internal temperature is detected in step S22. In step S23, it is determined whether or not the temperature difference is within a preset temperature (for example, 5 ° C.). Here, if it is NO, it will transfer to step S24, and if it is YES, it will transfer to step S25.

  If it is determined in step S23 that the temperature difference between the set temperature and the internal temperature is 5 ° C. or more, it is determined that the heating load is large, the process proceeds to step S24, and heating by “electric heater heating + refrigerant heating” is performed. After the temperature operation is executed, the process returns to step S22. Thus, the constant temperature transport device 1 is heated by a combination of refrigerant heating using the evaporator / refrigerant heating coil 8 as a heating source and electric heater heating using the electric heater 10 as a heating source. On the other hand, if it is determined in step S23 that the temperature difference is within 5 ° C., the time from thermo-on to thermo-off is detected in step S25, and then whether the time is within a set time (for example, 10 minutes) in step S26. It is determined whether or not.

  If it is determined in step S26 that the time from the thermo-on to the thermo-off has exceeded 10 minutes, it is determined that the heating load is still large, the process proceeds to step S27, and heating by “electric heater heating + refrigerant heating” is performed. Warm operation is performed. Thereby, the constant temperature transport apparatus 1 continues the heating operation by the combination of the electric heater heating and the refrigerant heating. If it is determined in step S26 that the time from thermo-on to thermo-off is within 10 minutes, the operation is switched to "electric heater warming" using an electric heater in step S28, and then the set temperature and the internal temperature in step S29. Deviation from is detected.

  In step S30, it is determined whether or not the deviation is within a set range (for example, ± 1 ° C.). If it is within 1 ° C. (YES), the process proceeds to step S32 and operation by “electric heater warming” continues. Is done. On the other hand, if it exceeds the set range, the process proceeds to step S31, where the operation is switched to the operation by "refrigerant warming" having higher temperature controllability than the operation by "electric heater warming", and the internal temperature is within the set range. Heating operation is performed so as to be controlled. When the constant temperature transport vehicle 2 is stopped, the heating operation is performed by repeating the above operation every predetermined time.

  Therefore, when the constant temperature transport vehicle 2 is stopped (when the traveling engine 5 is stopped), if the difference between the set temperature and the interior temperature is large or if it takes time from the thermo-on to the thermo-off, the heating source is “electrical”. Heater warming + refrigerant warming "and the warming capacity is increased, so that the internal temperature can quickly reach the set temperature. After the internal temperature reaches the set temperature, the heating source is reduced to one and the heating capacity is lowered. If the deviation between the internal temperature and the set temperature is within the set range, When the temperature exceeds the set range, it is switched to “refrigerant warming”, so that the internal temperature can always be maintained and controlled within the set range by reducing the overshoot and improving the temperature controllability.

However, according to the present embodiment, the following effects can be obtained.
If the difference between the internal temperature and the set temperature is greater than or equal to the set temperature during the heating operation, use multiple warming sources such as “warm water warming + refrigerant warming” or “electric heater warming + refrigerant warming”. When the temperature difference is within the set temperature, depending on the time from thermo-on to thermo-off, if that time is longer than the set time, operate with multiple heating sources combined as described above, and the time When the time is within the set time, the heating source is set to any one of “warm water warming”, “electric heater warming”, and “refrigerant warming”.

  For this reason, during pull-ups where the temperature difference between the internal temperature and the set temperature is large, or when it takes a long time from thermo-on to thermo-off, it is possible to increase the heating capacity by combining multiple heating sources. The internal temperature can be quickly heated to the set temperature.On the other hand, after the internal temperature reaches the set temperature, the heating capacity is reduced by using one heating source, and the overshoot is reduced. Temperature controllability can be improved. Therefore, both the pull-up performance at the start of the heating operation and the temperature control performance after reaching the set temperature can be improved and both can be achieved. Moreover, since the inside of a store | warehouse | chamber is not heated too much more than necessary, the saved calorie | heat amount can be used for cabin heating etc. and can be used effectively.

  In addition, when operating with the warming source as one of "warm water warming", "" electric heater warming "and" refrigerant warming ", the deviation between the internal temperature and the set temperature is detected, If the deviation is within the set range, operate with the heating source with higher heating capability (warm water heating or electric heater heating). If the deviation exceeds the set range, the one with higher temperature controllability The operation is performed by a heating source (refrigerant heating). For this reason, after the internal temperature reaches the set temperature, if the deviation between the internal temperature and the set temperature is within the set range, the operation is continued with the heating source with the higher heating capacity, and the deviation is within the set range. When the temperature is over, it is possible to always maintain and control the internal temperature within the set range by switching to operation with a heating source with higher temperature controllability and increasing temperature controllability. The temperature control performance can be further improved.

  Further, there are three heating sources: “refrigerant warming” by the refrigeration apparatus (refrigeration system) 14, “warm water warming” by the cooling water of the traveling engine 5, and “electric heater warming” by the electric heater 10. When the constant temperature transport vehicle 2 travels, “refrigerant warming” and “warm water warming” in the three heating sources are used, and when the constant temperature transport vehicle 2 and the engine 5 are stopped, the three heating sources are used. Since “refrigerant warming” and “electric heater warming” in the temperature source are used, the three warming sources are properly used according to the use state of the constant temperature transport vehicle 2, Can be heated to a set temperature.

  That is, when the constant temperature transport vehicle 2 travels, “refrigerant warming” and “warm water” in three heating sources by the refrigeration apparatus (refrigeration system) 14 driven by the engine 5, the cooling water of the engine 5, and the electric heater 10. By using “warming”, it is possible to ensure the heating capacity, efficiency and temperature controllability, and when the constant temperature transport vehicle 2 and the engine 5 are stopped, the cooling water of the engine 5 cannot be used. By using “refrigerant warming” and “electric heater warming” by the refrigeration apparatus (refrigeration system) 14 and the electric heater 10, the heating capability and temperature controllability can be ensured. Therefore, in any case, pull-up performance and temperature control performance can be ensured and both can be achieved.

  In addition, when driving with one of the heating sources, when the constant temperature transport vehicle 2 is running, if the deviation between the internal temperature and the set temperature is within the set range, the operation with “warm water heating” is performed. If the deviation exceeds the set range, the operation is performed by “refrigerant warming”. When the constant temperature transport vehicle 2 and the engine 5 are stopped, the deviation between the internal temperature and the set temperature is within the set range. In this case, the operation by “electric heater heating” is performed, and when the deviation exceeds the set range, the operation by the refrigerant heating is performed.

  For this reason, when the constant temperature transport vehicle 2 is running, if the deviation between the inside temperature and the set temperature is within the set range, the operation with “warm water warming” with a high heating capacity is continued, and the deviation exceeds the set range. If this is the case, switching to operation with “refrigerant warming” with high temperature controllability, and improving the temperature controllability, the internal temperature can always be maintained and controlled within the set range. When the constant temperature transport vehicle 2 and the engine 5 are stopped, if the deviation between the inside temperature and the set temperature is within the set range, the operation with “heating with electric heater” with high heating capacity is continued, and the deviation exceeds the set range. In this case, the internal temperature can always be maintained and controlled within the set range by switching to the operation with “refrigerant warming” having high temperature controllability and enhancing the temperature controllability. Therefore, the temperature control performance can be further improved both when the constant temperature transport vehicle 2 is traveling and when the constant temperature transport vehicle 2 is stopped (when the engine 5 is stopped).

  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 embodiment, assuming that the capability as a heating source is higher in “warm water warming” and “electric heater warming” than in “refrigerant warming”, step S10 in FIG. 2 and FIG. In step S30, when the deviation is within 1 ° C., the heating source is “warm water warming” and “electric heater warming”, and when the deviation exceeds 1 ° C., the heating source is “refrigerant warming”. However, if the heating capacity of “refrigerant heating” is higher than that of “warm water warming” and “electric heater warming”, switch the heating source. It may be reversed.

  Moreover, although the said embodiment demonstrated the example which has arrange | positioned the control apparatus 19 in the cabin 4 of the constant temperature transport vehicle 2, the control apparatus 19 is installed in the capacitor | condenser unit 15 other than the cabin 4, for example. You may do it.

DESCRIPTION OF SYMBOLS 1 Constant temperature transport apparatus 2 Constant temperature transport vehicle 5 Engine 6 Cooling / heating unit 7 Fan 8 Evaporator / refrigerant heating coil 9 Hot water coil 10 Electric heater 14 Refrigeration system (refrigeration system)
16 Engine cooling system 18 Electrical wiring 19 Control device

Claims (6)

In the heating operation method of the constant temperature transportation apparatus that includes a plurality of heating sources and operates one of the heating sources to heat the internal temperature to the set temperature.
During the heating operation, when the difference between the internal temperature and the set temperature is equal to or higher than the set temperature, the operation is performed by combining a plurality of the heating sources. When the temperature difference is within the set temperature, from the thermo-on to the thermo-off When the time is equal to or longer than the set time, the operation is performed by combining a plurality of the heating sources. When the time is within the set time, the operation is performed with any one of the heating sources. A heating operation method for a constant temperature transport device.   When operating with any one of the heating sources, the deviation between the internal temperature and the set temperature is detected, and when the deviation is within the set range, the heating source with the higher heating capability The heating operation method for a constant temperature transportation apparatus according to claim 1, wherein the operation is performed by a heating source having a higher temperature controllability when the deviation exceeds a set range. .   There are three heating sources: refrigerant heating by a refrigeration system, warm water heating by engine cooling water, and electric heater heating by an electric heater. When the constant temperature transport vehicle is running, the refrigerant in the three heating sources Heating and hot water heating are used, and when the constant temperature transport vehicle and the engine are stopped, refrigerant heating and electric heater heating in the three heating sources are used. The heating operation method of the constant temperature transport apparatus as described in 1 or 2.   When operating with one of the heating sources, when the constant temperature transport vehicle is running, if the deviation between the internal temperature and the set temperature is within a set range, the refrigerant heating and the hot water heating are performed. If either one of the heating sources with higher heating capability is operated and the deviation exceeds the set range, the heating source with higher temperature controllability, either refrigerant heating or warm water heating, is used. The heating operation method of the constant temperature transport apparatus according to claim 3, wherein the operation is performed.   When operating with any one of the heating sources, when the constant temperature transport vehicle and the engine are stopped, if the deviation between the internal temperature and the set temperature is within a set range, If the heater is heated by the heating source with the higher heating capacity and the deviation exceeds the set range, the higher of the temperature controllability of the refrigerant heating or the electric heater heating The heating operation method of the constant temperature transport apparatus according to claim 3, wherein the operation is performed by a heating source. In a constant temperature transport device that includes a plurality of heating sources and operates one of the heating sources to heat the interior temperature to a set temperature.
During the heating operation, when the difference between the internal temperature and the set temperature is equal to or higher than the set temperature, the operation is performed by combining a plurality of the heating sources. When the temperature difference is within the set temperature, from the thermo-on to the thermo-off When the time is equal to or longer than the set time, the operation is performed by combining a plurality of the heating sources. When the time is within the set time, the operation is performed with any one of the heating sources. A constant temperature transport device comprising a control device.

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