JPH11142042A - Heat insulating cold insulating truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To juxtapose high temperature and low temperature rooms in the cargo box of a single truck by juxtaposing a heat insulating room and a cold insulating room, supplying hot water from an engine room to the heat exchanger for the heat insulating room, and arranging a thin planar heater on the indoor side wall face while a cold radiating plate on the indoor side wall face of the cold insulating room. SOLUTION: In a hot water circulation circuit 20 from the engine room of a heat insulating room A, branch points 23a, 24a are provided for the supply pipe 13 and the return pipe 14 of a heater circulation circuit 10 and a heat exchanger 21 is coupled with a supply pipe 23 and a return pipe 24 for circulating hot water through the heat exchanger 21. A thin planar sheet heater 30 is applied to the indoor side wall face and a sheath heater 40 is disposed at a position for heating an object from the bottom face. Furthermore, a receptacle part 50 is provided in order to supply power from an AC power supply to the sheet heater 30 and the sheath heater 40 and a fan 22 is disposed in the rear of the heat exchanger 21. Cold radiating plates 70 for cooling a room are arranged for the refrigerant pipe of a cold insulating room B and a rotary fan 80 is disposed above the cold insulating room B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-retaining and cold-retaining transport vehicle, and more particularly to a vehicle capable of coexisting two types of rooms, a heat-retaining room and a cold-retaining room, in one vehicle.

[0002]

2. Description of the Related Art Recently, it has been pointed out that the importance of temperature control during distribution is pointed out. For example, it has been confirmed that cooked lunches and the like have a sterilizing effect at a high temperature of 60 ° C. or higher. That is, bacteria causing food poisoning of Salmonella, Vibrio parahaemolyticus, pathogenic Escherichia coli, Welsh bacteria, Staphylococcus aureus are 60 to 65 ° C.
It has been demonstrated that the food died in the above environment and that the food was kept safe.

On the other hand, the present applicant has previously proposed a warm storage vehicle (Japanese Patent Application No. 6-252860). The outline is that a part of a heater circulation path from an engine water pump to an indoor heater for indoor heating is branched, and a heat storage portion facing a part of the inside of the refrigerator is provided. And a hot water boiler is provided outside the vehicle, and a portion of the path of the engine room hot water circulation path from the hot water boiler is provided. A circulating pipe is detachably connected via a coupler to form a hot water boiler circulating path, and the engine room and the hot water boiler outside the vehicle are connected to each other.
It is characterized in that hot water can be supplied alternatively from two heat sources to the heat exchanger for warming.

However, when transporting the above-mentioned foods and the like, as described above, foods that can maintain safety at a high temperature of about 65 ° C. or more,
For example, while carrying packed lunches and soups, sashimi,
There has been a demand that vegetables, pickles, etc. should be kept safe at relatively low temperatures, and that foodstuffs that can be kept safe at low temperatures (chilled) should be carried. Because when transporting cooked lunches and other ingredients to small retail stores, companies, factories, etc., it is inefficient to use only one of the high or low temperatures and it is convenient to carry both at the same time in one vehicle It is.

[0005] However, if a single vehicle has both functions of keeping heat and keeping cold, it is necessary to equip a single vehicle with a function of keeping a high temperature of about 60 ° C or more and a low temperature of about 2 to 5 ° C. Difficulty in securing power source and piping. Since different types of rooms are separately provided in the limited space of the packing box, it is difficult to allocate space to secure the load to be placed. And the like.

[0006]

SUMMARY OF THE INVENTION The present invention has been made based on the above-mentioned circumstances, and a power supply and a piping for high and low temperatures are secured in a packing box of one vehicle, and a room for high temperature is provided. This is an attempt to distribute the space of a packing box in which a room for low temperature and a room for low temperature coexist.

[0007]

According to the present invention, there is provided an insulated / insulated transportation vehicle in which a heat insulation room and a cold insulation room are separately provided in one packing box,
(A) In the heat insulation room, there is provided a hot water pipe for taking out hot water from the engine room, a hot water circulation circuit for guiding the hot water pipe into the refrigerator, supplying hot water to the heat exchanger, and returning the hot water to the engine room again. In addition, a heater formed in a thin plate shape by applying a resistor to a base wall on the side wall surface of the room is disposed at a position where the radiant heat hits the object. A compressor and a condenser are arranged, and a controller having an expansion valve and an electromagnetic valve arranged in front thereof is provided, and a refrigerant pipe for circulation is connected to these to form a refrigerant circulation circuit. A thin flat cooling plate connected to a refrigerant pipe is provided, and an outlet for connecting a commercial or home AC power source is provided to the heater and the compressor of the heat insulation room and the cooling room. You.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG.
The heat insulation room A and the cold insulation room B are provided side by side in one packing box. The heat insulation room A has a heater for heating the engine room and the cab.
A heater circulation circuit 10 for circulating hot water between the heat exchanger, a hot water circulation circuit 20 from an engine room for supplying hot water to a heat exchanger for warming the inside of the refrigerator, and a flat plate arranged on a side surface of the refrigerator. A heater (hereinafter referred to as a seat heater) 30, a relatively high-power heater (referred to as a sheathed heater) 40 disposed on the bottom surface of the refrigerator, and an outlet 50 are provided. And
The cold storage room B forms a part of the refrigerant circulation circuit 60 in which a compressor, a condenser, and the like are arranged, and a part of the circulation circuit.
A cooling plate 70 is provided on the side to cool the room.

First, the warming room A will be described. The engine room 11 and heaters provided for indoor heating of the driver's cab are provided.
A heater circulation circuit 10 is formed by the supply pipe 13 and the reduction pipe 14 disposed between the heater 12 and the supply pipe 13.

Next, the hot water circulation circuit 20 from the engine room is connected to the supply pipe 13 of the heat circulation circuit 10.
A branch point 23a, 24a is provided in a part of the reduction pipe 14, and a supply pipe 23 and a reduction pipe 24 for circulating the whole or a part of the hot water to the heat exchanger 21 from the branch point are provided. As a specific means of branching, for example, a Y-shaped three-way is formed, a cock or a solenoid valve is interposed in the Y-shaped three-way, and hot water from the engine room is supplied with the indoor heating heater 12 and the exchanger 21. Are formed so as to be supplied to both or only one of them.

Next, the sheet heater 30 is formed by applying a resistor such as carbon powder on a flat plastic substrate having excellent heat resistance such as epoxy resin and maintaining insulation by using a printing technique, for example. And the thickness is small enough to fit within 2 mm, while the generated power is weak and the surface temperature is 100 to 130 ° C.
And a protective frame will be provided if necessary. This is arranged at a position where the object can be directly illuminated, for example, when a lunch box or the like is placed in several stages on a shelf, so as to have a height that can irradiate each stage.

On the other hand, since the sheet heater 30 has relatively low power on the bottom surface in the refrigerator, the sheathed heater 40 with relatively high power is moved from the bottom surface to the target when the amount of heat is insufficient. Install in a warming position. The sheath heater 40 has, for example, a nichrome wire disposed inside, a protective cylinder disposed outside, and a surface temperature of 300 to 400 ° C.
Can be used, and the inside of the refrigerator has a relatively large room in the vertical direction.
mm. To supply power to the seat heater 30 and the sheathed heater 40, an outlet 50 capable of inputting a commercial or household AC power source is provided in a part of the vehicle body.

Further, a blower 22 is disposed behind the heat exchanger 21 so as to allow the generated warm air to flow throughout the inside of the refrigerator.

On the other hand, as shown in FIG. 2, the cooling room B first includes a compressor 61 and a condenser
And a controller 64 having an expansion valve (not shown) and an electromagnetic valve disposed at the front of the controller 63. A refrigerant pipe 62 for circulation is connected to these, and a return path to return to the compressor 61 is formed. Thus, a circulation circuit 60 is formed. The compressor 61 is provided with a sub-compressor driven by power supply from an AC power supply for warming-up and for riding a ferry, in addition to the one using the rotation of the engine as a drive source, if necessary. Keep it.

The refrigerant pipe 21 is provided with a cooling plate 70 for cooling the room. The cooling plate 70 has an inlet 71 at a lower portion as shown in FIG. And a plate body is formed using an aluminum roll bond panel having a hollow portion 70a formed in, for example, a vertical shape, a mesh shape, or a lattice shape, and an outlet 72 is formed in an upper portion. The cooling plate 70 is formed of a metal or the like having excellent thermal conductivity, for example, aluminum and its alloy are preferable. A rotating fan 80 for convection of the room air is provided above the cold storage room B.
Is arranged. In addition, the cooling plate 70 is, in addition to a roll-bonded panel type, an aluminum plate body connected to a copper pipe, or an aluminum fin connected to a copper pipe. You can also.

Next, the operation of this embodiment will be described. First, prior to loading, in order to raise the temperature in the refrigerator,
The switch of the seat heater 30 connected to the outlet 50 from the commercial or household AC power supply and, if necessary, the switch of the sheath heater 40 are inputted, and this input is necessarily made by, for example, a timer switch. And start the engine,
When the engine room reaches a predetermined temperature, the branch point 23a,
24a is opened to open the engine room 11
Is introduced into the heat exchanger 21, and the air sucked into the wind tunnel from the air inlet by the rotation of the blower 22 in the heat exchanger 21 comes into contact with the heat exchanger 21 and the hot air is blown out. .

Then, radiant heat is emitted from the sheet heater 30 arranged on the inner wall surface of the refrigerator in the horizontal direction in the refrigerator, and the air in the refrigerator is directly heated, and the interior of the refrigerator is efficiently heated because its surface area is large. Also, when the warm air heated by the sheath heater 40 rises from the bottom surface, the inside of the refrigerator is warmed from both the horizontal and vertical directions, and hot air from the heat exchanger through hot water from the engine room is added thereto. The interior of the refrigerator cooperates with the direct heating by the sheet heater 30 and the sheathed heater 40 and the indirect heating of the hot water from the heat exchanger 21 which is converted into hot air, so that the effect of increasing the temperature in the refrigerator becomes harmonious. .

As a result, even if the seat heater 30 is used alone, the inside of the refrigerator can be sufficiently heated to 70 ° C. or more if it takes about three hours, and the heat exchanger 2 from the engine room can be heated.
As shown in FIG. 3, when the sheet heater 30 and the sheet heater 30 were combined, it took only about 1 hour, whereas the sheet heater 30 alone required about 2.6 hours to reach 70 ° C.

This is because the sheet heater 30 arranged on the inner wall surface of the refrigerator emits radiant heat in the horizontal direction in the refrigerator, and has a large surface area, and can heat the refrigerator efficiently because it is directly heated. It is shown that. At the same time, if this is combined with hot air from a heat exchanger via hot water from the engine room, the two will work together to reduce the time required to raise the temperature of the interior to 70 ° C to about 1/3. Shows facts. Therefore, it is desirable to combine the hot water in the engine room with the seat heater. However, if there is a possibility that idling due to the start of the engine may cause noise, the electric heater alone may precede and be combined later. In any case, the inside of the refrigerator can be efficiently heated by using a commercial or household AC power supply without requiring a warm-up device.

The sheet heater 30 is loaded at a predetermined temperature as described above. At this time, the sheet heater 30 has a thickness of 2 mm or less and is extremely thin even with a protective frame. Becomes possible. Then, when the temperature reaches the predetermined temperature, the transport vehicle is run and delivered to the destination. At this time, in order to prevent the battery from being consumed, it is desirable to use the hot water heating heat exchanger from the engine room during running.

In the process of heating the warming room, when objects such as lunch boxes and cooked vegetables are loaded, the heat radiated from the sheet heater 30 on the side wall surface irradiates the objects directly to improve the efficiency. However, if the radiant heat is too strong, there is a risk that the water in the food will evaporate and the food will be in a dry state. However, according to the seat heater 30 according to the present invention,
Is a relatively weak electric power, which suppresses excessive evaporation of water by gentle heating and prevents loss of flavor as food in a dry state. At the same time, when heat from the sheath heater 40 and the heat exchanger 21 is applied from the bottom surface, the inside of the refrigerator can be sufficiently warmed and a high temperature of 60 ° C. or more (preferably 70 ° C. or more) can be maintained. And maintain the quality of foods and the like.

On the other hand, to operate the cool room B, first,
In the pre-cooling before traveling, a pre-operation motor (not shown) may be provided and operated to operate the refrigerant circulation circuit 60 as in the case of pre-heating. Since the temperature range on the low temperature side where the temperature falls to about ° C. or less is smaller than that on the high temperature side, the compressor 61 may be directly operated by driving the engine to lower the room temperature.

Then, the refrigerant pipe 21 which has entered the refrigerator via the compressor 20, the condenser 22 and the expansion valve of the refrigerant circulation circuit 60 enters through the lower inlet 71 of the cooling plate 70 and is formed in the plate. It flows in the hollow portion 70a, and in the process of the flow, cooling energy spreads over the entire plate,
The room temperature is lowered by the dispersed cooling energy. Then, convection occurs in the room air by the rotating fan 80, and the room is uniformly cooled.

The cooling operation can keep the room temperature at 10 ° C. or less, and even if the cooling plate is disposed on the side wall surface, it does not take up much area because it is a thin flat plate.
The load can be fully loaded in the room without being disturbed by the air outlet unlike a general air conditioner.

[0025]

According to the present invention, since a warming room and a cold room can coexist in one vehicle, foods that can be kept at a high temperature such as cooked lunch boxes and soup materials, and foods that can be kept at a low temperature such as sashimi, vegetables and pickles. Can be transported simultaneously, small retail stores, companies,
Transportation of foodstuffs to factories and the like can be dramatically improved.

At this time, since the warm air from the heat exchanger using the hot water from the engine room and the flat heater are combined, and the cooling room can be cooled by the cooling plate connected to the compressor, the condenser and the like. In addition, the effect of keeping warm and cool can be remarkably improved, and the power source and piping can be secured.

The heater and the cooling plate are thin flat plates and do not occupy space unlike the outlet of the refrigerator, so that the space can be widely used and the space distribution in the limited packing box can be reduced. Efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a vehicle according to the present invention.

FIG. 2 is a perspective view of the driver's seat of the vehicle of the present invention.

FIG. 3 is a perspective view showing a seat heater.

FIG. 4 is a front view showing a cooling plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS A Heat insulation room B Cold insulation room 10 Heater circulation circuit 20 Hot water circulation circuit 30 Seat heater 40 Seeds heater 50 Outlet part 60 Refrigerant circulation circuit 70 Cooling plate 80 Rotating fan

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI B60P 3/20 B60P 3/20 Z F25D 23/12 F25D 23/12 P

Claims (1)

[Claims] 1. A heat insulation room and a cold insulation room are separately provided in one packing box. (A) In the heat insulation room, a hot water pipe for taking out hot water from an engine room is arranged, and the hot water pipe is stored in the storage room. The hot water is supplied to the heat exchanger and supplied to the inside of the engine room, and the hot water circulation circuit is returned to the engine room again. (B) The cool room is provided with a controller in which a compressor and a condenser are arranged in a part of a path, and an expansion valve and an electromagnetic valve are arranged in front of the compressor and the condenser. These are connected with a refrigerant pipe for circulation to form a refrigerant circulation circuit, and a thin flat cooling plate connected to the refrigerant pipe is disposed on the indoor side wall, and a heater and a compressor for the heat insulation chamber and the cold insulation chamber are provided. To a commercial or household AC power supply An insulated and insulated transport vehicle, which is equipped with an outlet that connects the two.