JPS62106276A - Cold accumulation and heat accumulation method in refrigerating car and heat-insulating car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for storing cold and heat in commercial refrigerated vehicles and heat-retaining vehicles.

Conventional technology Conventionally, in refrigerated trucks that transport perishable foods over long distances,
A condensing unit is mounted on the vehicle body and linked to the engine, continuously cooling the cooling coil installed inside the refrigerator and forcing cold air into the refrigerator, or a cold storage pipe is installed inside the refrigerator. The condensing unit is driven by an external power source to cool the cold storage pipe, and while the vehicle is running, the condensing unit is stopped and the interior of the refrigerator is cooled by convection of cooling air from the cold storage pipe. . Furthermore, in a heat-retaining vehicle that transports boxed lunches, cooked meals, etc., a heater is installed in the interior of the vehicle to heat the boxed lunches and cooked meals while delivering them.
``The problem that the invention aims to solve is that mounting a condensing unit on the body of a refrigerated car increases the weight of the car body, which increases the engine load, which causes play in the condensing unit. However, there were drawbacks such as frequent failures, requiring time and effort for maintenance, and a reduction in loading capacity.

In order to solve these problems, the present invention provides a condensing unit that is installed at a fixed location without being mounted on the vehicle body, and the cooling coil of the condensing unit cools and condenses a refrigerant such as antifreeze. A heat dissipation coil is used to heat a heat storage medium such as antifreeze, and the cooled refrigerant medium is circulated and stored in a cold storage panel installed inside the refrigerator car. It is a method that stores heat by circulating a heated heat storage medium through the panel, and there is no need to mount a condensing unit on the vehicle body, thus reducing the engine load of the refrigerated vehicle.
It is characterized by simplification of maintenance management, increased loading capacity, and the ability to also serve as a heat-retaining warehouse or heat storage.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings of embodiments.

A liquid receiver 1, a cooling pipe coil 3 inserted into a cold storage tank 2, an accumulator 4, a compressor 5, a heat radiation pipe coil 71 inserted into a heat storage tank 6. A condensing unit 9 that constitutes a refrigeration cycle with an auxiliary condenser 8 and the like is installed at a fixed location to cool the refrigerant stored in the refrigerant storage tank 2 and warm the refrigerant stored in the refrigerant tank 6, thereby refrigerating the refrigerated vehicle. Copper serpentine pipes 14 are installed on the inner walls and ceilings of the refrigerators 11 in 10 and the heat insulating cabinets 13 in the heat retaining cabinets 12, etc.
A cold storage panel 16 or a heat storage panel 17 containing a cold storage heat agent 15 is attached, and a circulation hose is connected to an external joint portion 18 with a stop valve of the cold storage panel 16 or heat storage panel 17 from a pump installed in the cold storage tank 2 or the heat storage tank 6. 19 is extended and removably connected to circulate the cool storage medium to the cold storage panel 16 and the heat storage medium to the heat storage panel 17.

Functions and Effects In the present invention, antifreeze (trade name: PLINE) is used as the cool storage medium in the cold storage tank 2 of the condensing unit 9 and the heat storage medium in the heat storage tank 6. For example, it is installed at a terminal station where refrigerated cars 10 and heat-insulating warehouses 12 are assembled, and is operated by an external power source. The cool storage medium in the cool storage tank 2 is cooled down to about -10°C to -40°C by the cooling pipe coil 3, and the heat storage medium in the heat storage tank 6 is cooled to about 40°C to -60°C by the heat sink coil 7. It is heated to C. Therefore,
When the refrigerated vehicle 10 or the heat storage box 12 returns to the terminal station after long-distance transportation, the circulation hose 19 is connected to the external joint 18 with a stop valve from the condensing unit 9, and the copper coiled pipe inside the cold storage panel 16 is connected. The heat storage panel 17 is cooled while flowing the cooled refrigerant medium through the heat storage panel 14.
In this method, the heat storage medium is heated while flowing through it.

After cooling or heating to a certain temperature, the circulation hose 19 is removed from the external joint part 18 with a stop valve, and the refrigerated vehicle 10 is removed.
In the storage room 12, fresh foodstuffs are stored, and in the thermal storage box 12, bento boxes are stored.
Alternatively, cooked foods are stored in the refrigerator and transported.

Therefore, in the refrigerated vehicle 10, there is no need to load the condensing unit 9 on the vehicle body, so the load on the engine is reduced and maintenance management can be facilitated.
By branching the circulation hose 19 from the cold storage tank 2 of the condensing unit 9 using a detripulator, it is possible to store cold in the refrigerators of a large number of refrigerator cars 10, refrigerated coolers in the showcase, etc., and also to utilize the heat storage medium in the heat storage tank 6. It can also be used to store heat in a heat-retaining warehouse or heat-retaining warehouse, and has the remarkable effects described above.

[Brief explanation of drawings]

Fig. 1 is a connection diagram of a condensing unit and a refrigerated car or a heat storage box showing the implementation of the method of the present invention, Fig. 2 is an enlarged side view of the refrigerated car, and Fig. 3 is a cross-sectional view taken along the line A-A. . 2 Cold storage tank, 3 Cooling pipe Koinope 5 Compressor, 6 Heat storage tank, 7
Heat radiation! Coil, 9 condensing units, 10 refrigerated vehicles, 12 thermal insulation vehicles, 16 cold storage panels, 17 thermal storage panels, 18
External joint with stop valve, 19 circulation hose

Claims (1)

[Claims] 1. A condensing unit, which consists of a refrigeration cycle consisting of a liquid receiver, a cooling pipe coil inserted into a cold storage tank, an accumulator, a compressor, a heat radiation pipe coil inserted into a heat storage tank, an auxiliary condenser, etc., is installed at a fixed location to store cold. An external joint with a stop valve that cools the refrigerant stored in the tank and warms the heat storage medium stored in the heat storage tank, for a cold storage panel attached to the refrigerator of a refrigerated vehicle or a heat storage panel attached to the insulated compartment of a heat-retaining vehicle. A refrigerated vehicle or a heat-retaining vehicle characterized by circulating a refrigerant medium to a cold storage panel and a heat storage medium to a heat storage panel by extending a circulation hose from a pump installed in the cold storage tank or heat storage tank and removably connecting the hose. Cold storage and heat storage methods.