JPH082246A - Cold/warm store for vehicle - Google Patents

Abstract

PURPOSE:To reduce an electric load to a car-mounted battery, which is consumed while being supplied to a Peltier element and to a motor of cold/warm store. CONSTITUTION:In a vehicle 21, Peltier elements 50 for a generator are installed in high-temperature- and low-temperature-heat source parts 54, 55, 47, 53, 57, and these Peltier elements are connected to a Peltier element 11 via an electric wire 56.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic cooling type vehicle cold storage using a Peltier element.

[0002]

2. Description of the Related Art FIG. 2 shows an example of this type of conventional cold storage. The upper opening of the main body 1 of the cold storage 100 is opened and closed by a lid 3 pivotally supported by a hinge 2 on the main body 1.

The main body 1 comprises an inner surface plate 4 made of a material having a high thermal conductivity such as aluminum, and a heat insulating material 5 attached to the outer surface thereof.
And an outer surface plate 6 that covers this. The lid 3 is formed by laminating an inner surface plate 7, a heat insulating material 8 and an outer surface plate 9 in this order.

A metal electrode of a Peltier element 11 is brought into close contact with the inner surface plate 4, and its heat radiation fin 12 is exposed to the outside of the main body 1. The air sent from the fan 13 is blown to the heat radiation fins 12. In addition, 14 is a motor for driving the fan 13, and 15 is a refrigerated object to be cooled such as canned juice stored in the inside 16.

The Peltier element 11 is formed by joining two types of thermoelectric semiconductors, which are a P-type element and an N-type element, in a π-type with a metal electrode. When a current is passed from the N-type element to the P-type element, the Peltier effect is obtained. Thus, the heat is absorbed from the metal electrode and radiated from the radiation fin 12.

When an electric current is applied in the opposite direction to the above, the radiation fin
Heat is absorbed from 12 and radiates from the metal electrode. In addition, when either the metal electrode or the radiation fin is cooled or heated to generate a temperature difference between them, an electric current is generated.

[0007]

[Problems to be Solved by the Invention] The above conventional cold storage 10
When 0 is installed in the passenger compartment of an automobile, the load from the on-vehicle battery is increased because the current from the on-vehicle battery is supplied to the drive motor 14 of the Peltier element 11 and the fan 13, and therefore a large-capacity on-vehicle battery is installed. Because you need to
There was a problem that the cost increased.

[0008]

The present invention has been invented to solve the above-mentioned problems, and is characterized in that a Peltier element for power generation is installed at a high-temperature or low-temperature heat source portion of a vehicle, This Peltier element for power generation is connected to the Peltier element for the cold storage via an electric wire.

The high-temperature or low-temperature heat source portion can be constituted by a hot water system for cooling a running engine, an exhaust system, a discharge pipe system or a suction pipe system of a compressor of an air conditioner mounted on a vehicle.

The Peltier element for power generation can be connected in parallel with the on-vehicle battery.

[0011]

In the present invention, the Peltier element for power generation is heated or cooled by the heat from the high-temperature or low-temperature heat source portion of the vehicle to generate an electric current, and the electric current is generated to the Peltier element for the cold storage via the electric wire. By supplying, the inside of the cold storage is heated or cooled.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENT One embodiment of the present invention is shown in FIG. A cool / heat storage 100 is installed in the conule 36 in the vehicle compartment 35 of the vehicle 21, and the heat radiation fins 12 of the Peltier element 11 are exposed on the outer surface thereof. The fan 13 for blowing air to the heat radiation fins 12 is driven by a motor 14.

A casing of an air conditioner mounted on the vehicle 21
A blower 23, an evaporator 24, a heater 25, an air mix damper 26, blowout mode switching dampers 27 and 28, an inside / outside air switching damper 29, and the like are built in the inside 22. The dashboard 30 is provided with a face outlet 31, a defrost outlet 32, and a foot outlet 33.

During operation of this air conditioner, the running engine 37
The compressor 39 is driven from the electromagnetic clutch 38. Then, the high-temperature gas refrigerant blown out from the compressor 39 enters the condenser 40 through the discharge pipe 55 and radiates heat to the outside to be condensed and liquefied. This liquid refrigerant enters the receiver 41, separates the uncondensed gas refrigerant there, and then enters the expansion valve 42, where it adiabatically expands. This refrigerant is then transferred to the evaporator 24
Then, by evaporating and evaporating, it becomes a low-temperature gas refrigerant and returns to the compressor 39 through the suction pipe 53.

When the blower 23 rotates, the inside / outside air switching damper
The outside air or the air inside the vehicle compartment is supplied from the outside air intake port 34 or the inside air intake port 35 selected by switching 29 to the casing 22.
After being sucked into the inside and being energized by the blower 23, it is cooled by passing through the evaporator 24.

The air cooled by the evaporator 24 is diverted by the air mix damper 26, a part of which is heated in the process of passing through the heater 25 and then mixed with the remaining air bypassing the heater 25. The conditioned air has a predetermined temperature. This conditioned air is blown into the vehicle interior 35 from one or two of the face air outlet 31, the defrost air outlet 32, and the foot air outlet 33 selected by switching the air outlet mode switching dampers 27 and 28.

The engine cooling water heated by cooling the running engine 37 is passed through a hot water pipe 57 to a radiator.
43, where the temperature is lowered by radiating heat to the outside air and the engine 37 is returned to.

When the air conditioner 20 is in operation, by opening the on-off valves 44 and 45, high temperature engine cooling water enters the heater 25 through the hot water pipe 54 and the on-off valve 45, and after lowering the temperature there, the return pipe 52 and Return to the engine 37 through the on-off valve 44.

Combustion air is drawn into the engine 37 through the carburetor 46, and high-temperature exhaust gas discharged from the engine 37 is discharged outside through an exhaust pipe 47 and a muffler 48.

A Peltier element 50 for power generation is provided in a hot water pipe 54 for guiding high-temperature engine cooling water from the engine 37 to the heater 25. The Peltier element 50 for power generation generates an electric current by being heated by the engine cooling water having a high temperature, and this electric current is supplied to the Peltier element 11 for the cold storage cabinet and the motor 14 via the electric wire 56 and the changeover switch 51.

When the air conditioner 20 is stopped, by switching the changeover switch 51, the current from the vehicle battery 49 is supplied to the Peltier element 11 for the cold storage cabinet and the motor 14 through the changeover switch 51.

Thus, while the air conditioner 20 is operating, the electricity generated by the Peltier element 50 for power generation is supplied to the Peltier element 11 for the cold storage and the motor 14 so that the cold storage 100 can be obtained.
Since the vehicle can be driven, the load on the vehicle-mounted battery 49 can be reduced.

In the above embodiment, the Peltier element 50 for power generation is installed in the hot water pipe 54. However, the Peltier element 50 for power generation is not limited to this, and the high temperature heat source portion of the vehicle, that is, the engine 37 goes from the radiator 43 to the radiator 43. Hot water system for engine cooling 57
The exhaust system including the exhaust pipe 47 of the engine 37 and the muffler 48, and the discharge pipe 55 of the compressor 39 of the air conditioner 20 can be attached.

Further, it may be provided at a low temperature heat source portion of the vehicle, that is, at a low temperature gas suction pipe from the evaporator 24 of the air conditioner 20 toward the compressor 39, that is, at a suction piping system 53 of the compressor 39.

In the above embodiment, the current is supplied to the drive motor 14 of the fan 13, but the fan 13 can be omitted. In this case, the current generated by the power generation Peltier element 50 is It suffices to supply only to the Peltier element 11 for the cold storage.

[0026]

According to the present invention, the Peltier element for power generation is heated or cooled by the heat from the high-temperature or low-temperature heat source portion of the vehicle to generate an electric current. Since the inside of the cold storage box is heated or cooled by supplying it to the element, the load of the on-vehicle battery can be reduced.

By connecting the Peltier element for power generation in parallel with the on-vehicle battery, the inside of the cold storage can be cooled or heated even when the vehicle or the air conditioner is stopped.

[Brief description of drawings]

FIG. 1 is a schematic system diagram showing one embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a conventional cold storage cabinet.

[Explanation of symbols]

 100 Cold / hot storage 11 Peltier element for cold / hot storage 12 Radiating fin 13 Fan 14 Motor 20 Air conditioner 50 Peltier element for power generation 54, 55, 47, 57 High temperature heat source part 53 Low temperature heat source part 49 Vehicle battery 51 Changeover switch 56 Electric wire

Claims (3)

[Claims] 1. An electronically cooled refrigerating cabinet for a vehicle using a Peltier element, wherein a Peltier element for power generation is installed at a high-temperature or low-temperature heat source portion of the vehicle, and the Peltier element for power generation is cold-heated via an electric wire. A cold storage cabinet for vehicles, which is connected to a Peltier element for storage. 2. The vehicle according to claim 1, wherein the high-temperature or low-temperature heat source portion comprises a hot-water system for cooling a running engine, an exhaust system, a discharge pipe system or a suction pipe system of a compressor of an air conditioner mounted on the vehicle. Cold storage for storage. 3. The cold storage box for a vehicle according to claim 1, wherein the Peltier element for power generation is connected in parallel with an on-vehicle battery.