JPH10119632A - On-vehicle refrigerating and heating cabinet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a refrigerating and heating cabinet in common for transporting a refrigerated article or a heated article, by juxtaposing an electromagnetic switch valve to a bypass path branched from an engine cooling water feeding path from an engine to a radiator, and connecting an automatic temperature control mechanism to a temperature sensor to provide a pump increasing the quantity of hot water flowing in the bypass path. SOLUTION: When a heat insulating cabin 1 is changed from heating cycle operation to refrigerating (freezing) cycle operation, this change can be made smoothly by the operation of an automatic temperature control mechanism 5, but when the change is made from the refrigerating (freezing) cycle operation to the heating cycle operation, temperature rise in the heat insulating cabin 1 can not be made incidentally due to the shortage of the quantity of hot water fed to a heating evaporator 4 by only opening the hand valves 18 and 19 of a bypass path 13. The smooth and quick temperature rise for the cabin 1 and the efficient execution of heating operation can be made by controlling the opening of the electromagnetic switch valve 16 by the automatic temperature control device 5 to increase the quantity of hot water flowing in the bypass path 13, and concurrently actuating a pump 20 to sufficiently feed hot water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigeration evaporator and a heating evaporator installed inside a heat-insulating cabin mounted on a vehicle or mounted on a carrier of a vehicle. The present invention relates to an in-vehicle refrigerator-cooled storage that is appropriately converted and used as a room or a storage room.

[0002]

2. Description of the Related Art Conventionally, refrigerated products, frozen products or warmed products are usually housed and stored in warm storages. When transporting these items, refrigerated items were transported by refrigerated vehicles, frozen items were transported by refrigerated vehicles, and warmed items were transported by dedicated vehicles. However, in recent years, it has been necessary to improve the efficiency of transportation from the viewpoint of road congestion and reduction of transportation costs. For this reason, multifunctional transport vehicles have been demanded. An in-vehicle refrigerator-freezer that integrates a freezer compartment and a refrigerator compartment has been developed.

[0003] However, the above-mentioned on-vehicle refrigerators may cause problems when the volume of each refrigerator is small and a large amount of goods must be transported. Also, depending on circumstances, it may be necessary to transport only refrigerated goods (frozen goods) or warmed goods.

[0004] Therefore, if the heat insulating cabin mounted on the vehicle or mounted on the carrier of the vehicle can be used for transporting refrigerated goods (frozen goods) or warmed goods, the transportation amount is large and it is convenient.

[0005] However, in this case, when the refrigerator is used as a refrigerator or freezer (hereinafter simply referred to as a refrigerator) and when it is used as a refrigerator, the specifications of the refrigerator (temperature of about -30 ° C) and the temperature of the refrigerator are different. Since there is a temperature difference of about 100 ° C from the specification (temperature 75 ° C), when changing from refrigeration cycle operation to warm storage cycle operation, it takes a considerable time to reach a predetermined temperature (an example is given). (For example, about 40 minutes), which is not efficient.

[0006]

SUMMARY OF THE INVENTION The present invention relates to the above-mentioned problems in the case where an insulated cabin mounted on a vehicle or mounted on a carrier of a vehicle is commonly used for transporting refrigerated (frozen) or warm products. It is a solution to the point.

[0007]

That is, according to the present invention, a refrigeration evaporator and a heating evaporator are installed inside a heat-insulating cabin mounted on a vehicle body or mounted on a carrier, and the heating evaporator is further installed. A temperature sensor connected via a cock to a bypass passage branched from an engine cooling water supply passage from the engine to the radiator, and a solenoid valve provided in the bypass passage, and a temperature sensor installed in the cabin and the solenoid valve. And the temperature sensor and the automatic temperature control mechanism are connected. In addition, the temperature sensor is connected to the radiator through the engine cooling water flow path and the bypass path branched from the flow path. A pump for increasing the flow rate of hot water is provided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific structure of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a partially cutaway perspective view showing the configuration of the present invention, FIG. 2 is a perspective view of a radiator used in the present invention, and FIG. 3 is an explanatory view showing a passage of engine cooling water in the present invention.

1 to 3, reference numeral 1 denotes a heat insulating cabin installed on a vehicle body 2, in which a refrigeration evaporator 3, a heating evaporator 4, and an automatic temperature control mechanism 5 for controlling the operation of the evaporator are provided. Is provided. 6 is a temperature sensor. 7
Denotes a driver's seat, and a temperature setting mechanism 8 for setting the temperature of the automatic temperature control mechanism 5 is provided. 9 is a door of the heat insulating cabin 1. A radiator 10 radiates cooling water of the engine 17 of the automobile. Reference numeral 13 denotes a bypass provided in a passage for cooling water (hot water) between the engine 17 and the radiator 10. After entering and heating the heating evaporator 4, a circulation path is formed so as to be discharged from the outlet hose 15. Reference numeral 16 denotes an electromagnetic on-off valve provided in the bypass passage 13, the operation of which is controlled by the automatic temperature control mechanism 5. Reference numerals 18 and 19 denote manual valves provided on the entrance side and the exit side of the bypass passage 13, respectively. Reference numeral 20 denotes a pump provided in the cooling water passage.
11 and 12 are radiator 10 and inlet hose 1
4 is a heat-resistant hose connecting the outlet hose 4 and the outlet hose 15.

Since the refrigerator of the present invention is constructed as described above, for example, when transporting a frozen product or a refrigerated product, the refrigerated product is stored in the heat insulating cabin 1 and then operated. By operating the refrigeration evaporator 3 by setting the control temperature of the automatic temperature control mechanism 5 by the temperature setting mechanism 8 provided in the chamber 7, the room temperature of the adiabatic cabin 1 is set to the set temperature range of the temperature setting mechanism 8 ( -5 ° C ~
-30 ° C, -5 ° C to 20 ° C in the case of refrigeration), and thereafter, the temperature inside the heat insulating cabin 1 is detected by the temperature sensor 6, and the automatic temperature control mechanism 5 is controlled based on the detected temperature.
The temperature in the heat insulating cabin 1 can be maintained at the set temperature.

When transporting the stored articles, the stored articles are accommodated in the heat insulating cabin 1 and the automatic temperature control mechanism 5 is provided by the temperature setting mechanism 8 provided in the cab 7 in the same manner as described above.
By operating the heating evaporator 4 by setting the control temperature of the radiator 10, the manual valves 18 and 19 installed in the bypass 13 provided in the hot water supply path after cooling between the engine 17 and the radiator 10 of the automobile are activated. The hot water, which is opened and cooled by heating the engine 17, is led to the bypass passage 13, and the heating evaporator 4 is heated to set the room temperature of the heat insulating cabin 1 to the set temperature of the temperature setting mechanism 8 (about 75 ° C.). ℃).
Thereafter, the temperature inside the heat insulating cabin 1 is detected by the temperature sensor 6 and the temperature inside the heat insulating cabin 1 can be maintained at the set temperature by controlling the automatic temperature control mechanism 5 based on the detected temperature.

When the operation of the heat-insulating cabin is changed from the operation of the warming cycle to the operation of the refrigeration (refrigeration) cycle, the operation of the automatic temperature control mechanism 5 can be performed smoothly. On the other hand, when the operation of the refrigeration (freezing) cycle is changed to the operation of the warming cycle, the temperature supplied to the heating evaporator 4 is increased only by opening the manual valves 18 and 19 provided in the bypass 13. Insufficient amount of hot water may cause the temperature in the heat insulating cabin 1 to not rise rapidly. However, in the present invention, since the electromagnetic on-off valve 16 is provided in the bypass 13, the automatic on-off valve 1 is controlled by the automatic temperature control mechanism 5.
By controlling the opening of 6, the flow rate of hot water flowing through the bypass 13 can be increased, and the temperature of the heat insulating cabin 1 can be rapidly increased. In this case, when the pump 20 provided in the cooling water supply path is operated in conjunction with the operation of the electromagnetic on-off valve 16, the hot water can be sufficiently supplied to the bypass path 13 and the temperature of the adiabatic cabin 1 can be increased. Can increase rapidly. As a result, the time for raising the temperature in the heat insulating cabin 1 from −30 ° C. to 75 ° C. is about 1 hour.
It can be reduced to about 0 minutes.

In the present invention, "bodywork" means the vehicle body 2
Means that the heat-insulating cabin 1 is directly mounted on the vehicle body, and "mounting" means that the heat-insulating cabin 1 is mounted on the carrier of the vehicle body 2.

[0014]

As described above, according to the present invention, the heat-insulating cabin can be used for either refrigeration (freezing) or warm storage, which is not only extremely convenient but also operates the refrigeration (refrigeration) cycle. When the operation is changed from the heat storage cycle operation to the heat storage cycle operation, the temperature of the adiabatic cabin can be smoothly and rapidly increased, and thus the heat storage operation can be efficiently performed. In addition, it is very effective in terms of energy saving, and has a very large practical effect.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a configuration in a case where the present invention is applied to an in-vehicle refrigerator-cold storage.

FIG. 2 is a perspective view of a radiator used in the present invention.

FIG. 3 is an explanatory diagram showing a passage of engine cooling water in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulated cabin 2 Body 3 Refrigeration evaporator 4 Heating evaporator 5 Automatic temperature control mechanism 6 Temperature sensor 7 Operator's cab 8 Temperature setting mechanism 9 Door 10 Radiator 11 Heat resistant hose 12 Heat resistant hose 13 Bypass path 14 Inlet hose 15 Outlet hose 16 Solenoid on-off valve 17 Engine 18 Manual valve 19 Manual valve 20 Pump

Claims (2)

[Claims] 1. A refrigeration evaporator and a heating evaporator are installed inside a heat insulating cabin mounted on a vehicle body or mounted on a cargo bed, and the heating evaporator is used to cool engine cooling water flowing from an engine to a radiator. A solenoid valve is connected to the bypass passage branched from the feed line via a cock, and an electromagnetic on-off valve is provided in the bypass passage, and the electromagnetic on-off valve is connected to a temperature sensor installed in the cabin. An in-vehicle refrigerated storage, which is connected to an automatic temperature control mechanism. 2. The on-vehicle vehicle according to claim 1, wherein a pump for increasing the flow rate of hot water flowing in a bypass path branched from the transmission path is provided in a transmission path of the engine cooling water from the engine to the radiator. For cold storage.