JP2001163042A - Air conditioning system for vehicle interior - Google Patents

Abstract

(57) Abstract: An air conditioner for an interior room of a vehicle, which includes a Stirling machine used as a cooling machine, and a drive unit for driving the Stirling machine. An engine-independent, multifunctional air conditioner for the interior of a vehicle, in which energy is generated and at the same time the cooling or heating process can be carried out using environmentally friendly refrigerants I will provide a. SOLUTION: A duplex Stirling machine 1 including a Stirling drive unit 11 and a Stirling cooler unit 12 is used, and mechanical output generated in the Stirling drive unit 11 is controlled by a Stirling cooler during normal operation. Useful for driving parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for an interior room of a vehicle, and a Stirling-Machine used as a cooling machine.
And a drive unit for driving this.

[0002]

2. Description of the Related Art An air-conditioning device of this kind is known from DE 43 36 712 A1. The drive unit of the Stirling machine of the known air conditioning system is formed by a vehicle engine (Fahzeugmotor), so that the air conditioning system only operates when the vehicle engine is running.

[0003] DE 41 41 293 A1
The same applies to the air-conditioning system for the interior of the electric vehicle, which is known from US Pat. In this case, it is possible to reverse the process sequence by reversing the direction of rotation of the Stirling machine, which was initially operating as a cooling machine, so that a selective heating or cooling operation is possible.

Further, German Patent Publication No. 19
From 745 167 it is known to use a Stirling machine as a drive for a generator that generates electrical energy, and furthermore that the Stirling machine is driven by a burner. 19th Inter-Society Energy Conversion Engineering Conference, Volume 3, "Advanced Energy Systems-Its Future Role," San Francisco, California, USA, August 19-24, 1984 (19th Intersocieet)
y Energy Conversion Engine
eering conference, Volume
3 "Advanced Energy System-
Their Role in our Future "
San Francisco, California, U.
SA, 19. -24. According to August 1984), one concept of a duplex Stirling machine is known, according to which a Stirling machine drives a Stirling cooler part acting as a heat pump as a drive unit. However, duplex Stirling machines for use in vehicles have not yet been proposed.

[0005] Future vehicle air conditioning systems must operate with less environmentally harmful refrigerants than with the currently used R134a. As a non-environmental alternative, so-called natural refrigerants, especially those present in the atmosphere, pose a problem. In order to further improve comfort, stand cooling or standby cooling (Standkuelun)
g), stand heating or standby heating (Standhe)
Additional features are desired, such as itung), auxiliary heating, and the generation of additional electrical energy, for example, to charge a vehicle battery. This requires an air conditioner mode of operation that is independent of the vehicle's drive engine.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is to provide a system in which the electrical energy is generated and at the same time the cooling or heating process can be carried out using refrigerants which do not place a burden on the environment. For the interior of the vehicle,
An object of the present invention is to provide a multifunctional air conditioner that does not depend on an engine.

[0007]

According to the present invention, the above object is achieved, according to claim 1, by a duplex or double Stirling machine comprising a Stirling drive part and a Stirling cooler part. -Stirlingmaschin
e) is used and the mechanical output generated in the Stirling drive section is solved during normal operation to serve for driving the Stirling cooler section. In addition, the mechanical output can be supplied to an electric machine connected to the Stirling drive part for generating current. The electric machine can optionally be used in motor operation for the start of the Stirling drive part and the quick start of the cooler until the Stirling drive part emits sufficient power. If the battery capacity and battery output capacity of the vehicle battery are sufficient, the electric drive of the Stirling cooler is optionally possible.

Each one of which can be controlled and adjusted externally
The double swash plate concept is particularly advantageous for a duplex Stirling machine with two swashplates for the Stirling drive section and the Stirling cooler section.

The Stirling cooler section is supplemented with a supplementary heater (Zuhize) by operating a heat pump which is energetically favorable.
r) or a stand heating device (Standheizvo)
rrichtung).

[0010] For normal operation of a duplex Stirling machine, fuel as the sole source of energy in the vehicle is used for operation independent of the drive engine.

The "cooling" function, the "heating" function and the "electrical energy generation in stand operation and running operation, respectively" function provide a wide range of versatility of the air conditioner according to the invention.

The generation of satisfactory standby and auxiliary heating outputs takes place via a heat pump process which is energetically favorable. This takes place in the Stirling process with satisfactory power even at particularly low external temperatures, which is not easily possible with refrigerant R134a in a typical cooling steam air conditioning process. This is because its output decreases as the external temperature decreases.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS An advantageous embodiment of the air-conditioning device according to the invention will now be described with reference to the following drawings, in which: FIG.

FIG. 1 shows a duplex Stirling machine, which is designed as a double swash plate machine, each of which has one externally controlled and adjustable swash plate 13,
14 is provided for the Stirling drive part 11 and the Stirling cooler part 12, in which case this double swash plate Stirling machine is advantageously used in the air conditioning system according to the invention. Stirling drive part 1
The swash plate 13 is mechanically constructed with axial pistons 15 and 16.
And a Stirling cooler part 12
Is connected to axial pistons 17 and 18. An axially movable member 19 is connected to a rotor 20 of an electric machine, not shown in detail. The Stirling drive part 11 is heated by fuel via a burner not shown. The mechanical power generated by the Stirling drive section 11 serves for driving the Stirling cooler section 12 during normal operation of the vehicle air conditioner. Furthermore, the mechanical output is supplied to the electric machine via the rotor 20 for generating current. The electric machine may optionally drive the Stirling drive section 11 until the Stirling drive section 11 has generated sufficient power.
And fast start of the Stirling cooler section 12 can be used in motor operation. If the battery capacity and / or the output power of the power grid are sufficient, an electric drive of the Stirling cooler section 12 is optionally possible. Stirling cooler part 1
2 is an auxiliary heater (Zuheizer) or a standby heater (Standh) in operation of an energy-efficient heat pump.
eizer).

[Brief description of the drawings]

FIG. 1 is a schematic view of a duplex Stirling machine according to the present invention formed as a double swash plate machine.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Duplex type Stirling machine, 11 Stirling drive part, 12 Stirling cooler part, 13,14 Swash plate, 15,16,17,18
Axial piston, 19 movable member, 20
Rotor

Claims (10)

[Claims] 1. An air conditioner for an inner room of a vehicle, comprising:
In a type comprising a Stirling machine used as a cooling machine and a drive unit for driving the same, a duplex Stirling machine (1) comprising a Stirling drive unit (11) and a Stirling cooler unit (12) is provided. Characterized in that the mechanical power used in the Stirling drive part (11) is used for driving the Stirling cooler part during normal operation and is used for the interior of the vehicle. Air conditioner. 2. The air conditioner according to claim 1, wherein the Stirling drive section is heated by a fuel via a burner. 3. The Stirling cooler section (12)
3. The air conditioner according to claim 1, wherein the air conditioner can be switched as a standby heating device during operation of the heat pump. 4. The air-conditioning system according to claim 1, wherein the Stirling cooler section (12) is selectively switchable to an electric drive. 5. An electric machine (20) connected to the Stirling drive part (11).
The air conditioner according to any one of claims 1 to 4. 6. The electric machine (20) is operable in electric motor operation and the Stirling drive part (11) is activated when the Stirling drive part (11) is started and when the Stirling cooler part (12) is started quickly. 6. The air conditioner of claim 5, wherein the air conditioner is activated until sufficient power is released. 7. An air conditioner according to claim 5, wherein the electric machine (20) is operable in generator operation for generating current. 8. An air conditioner for a machine according to claim 1, wherein the duplex Stirling machine is a double swash plate machine. 9. A duplex Stirling machine comprising:
9. The air-conditioning system according to claim 8, comprising one externally controlled and adjusted swash plate for the Stirling drive part and the Stirling cooler part. 10. The Stirling cooler section (12) is operated by a cooling medium from the atmosphere.
The air conditioner according to any one of the above.