DE102016009460A1 - Air conditioning device for a vehicle and vehicle with such an air conditioning device - Google Patents

Abstract

The invention relates to an air conditioning device (3) for a vehicle (1), with a refrigerant circuit (5) along which a refrigerant can be conveyed, wherein the refrigerant circuit (5) comprises a compressor (7), a gas cooler (9), an expansion device ( 11) and an evaporator (13), and with a heat transfer medium circuit (15) in which a liquid heat transport medium is conveyed. It is provided that the heat transfer medium circuit (15) with the gas cooler (9) and / or with the evaporator (13) of the refrigerant circuit (5) is fluidly and thermally connected such that thermal performance of the refrigerant circuit (5) via the heat transfer medium circuit (15 ) to at least one heat transfer device (17) is conveyed.

Description

The invention relates to an air conditioning device for a vehicle and a vehicle having such an air conditioning device.

From the German patent application DE 101 61 254 A1 an air conditioning device for a vehicle is known, which has a refrigerant circuit along which a refrigerant is conveyed. The refrigerant circuit is directly fluidically and thermally connected on the one hand with an outdoor heat exchanger and the other with an interior heat exchanger of the vehicle, wherein by means of a valve means a flow of the refrigerant in the refrigerant circuit can be changed, so that on the one hand a heating operation and on the other hand, a cooling operation can be displayed for the vehicle interior , The refrigerant circuit acts in the heating mode as a heat pump and in the cooling mode as air conditioning. Since only the refrigerant circuit is used directly for air conditioning of the vehicle interior, it requires a complex, comparatively large refrigerant circuit, this - must have numerous connection points - in particular due to the extensive piping. As a result, a leakage risk for the refrigerant circuit is very high. In addition, a high system pressure of up to 125 bar must be maintained in the large refrigerant circuit, which necessitates the use of expensive components, in particular made of stainless steel. Many of the components available for such refrigerant circuits are not suitable for use in vehicles, so special and / or custom-made products are needed here. The large refrigerant circuit requires a large refrigerant charge, for example, several kilograms of carbon dioxide in a CO ₂ -Kältemittelkreislauf. All functions require several solenoid valves and several expansion valves. It requires a valve operating range of up to about 125 bar and 160 ° C. Since the refrigerant has only a small heat capacity, on / off operations of the air conditioning device for vehicle occupants are directly noticeable.

The invention has for its object to provide an air conditioning device for a vehicle and a vehicle with such an air conditioning device, said disadvantages do not occur.

The object is achieved by providing the subject matters of the independent claims. Advantageous embodiments emerge from the subclaims.

The object is achieved in particular by providing an air-conditioning device for a vehicle, in particular for a bus, which has a refrigerant circuit along which a refrigerant can be conveyed. The refrigerant circuit has a compressor, a gas cooler, an expansion device and an evaporator. The air conditioning device also has a heat transfer medium circuit, along which a liquid heat transport medium can be conveyed. It is provided that the heat transfer medium circuit with the gas cooler and / or with the evaporator of the refrigerant circuit is fluidly and thermally connected such that thermal power of the refrigerant circuit via the heat transfer medium circuit to at least one heat transfer device can be conveyed. The air conditioning device has advantages over the prior art. In particular, due to the fluidic and thermal connection of the heat transport medium circuit with the gas cooler and / or the evaporator of the refrigerant circuit, thermal power from the refrigerant circuit can be efficiently conveyed to the heat transfer device via the heat transport medium circuit. If the air conditioning device is used in a vehicle, therefore, no costly installation of refrigerant pipes, but the refrigerant circuit can be constructed relatively small, the transport of thermal power from the refrigerant circuit to heat transfer devices of the vehicle can be done completely on the heat transport medium cycle. This, in turn, can very efficiently remove heat from the gas cooler and / or supply heat to the evaporator. The refrigerant circuit itself can be made very simple and, above all, small. As a result, in particular, it can only have a small number of connection points with a correspondingly reduced leakage risk. The area which has to be operated at high system pressure is then also small, wherein a large part of the air conditioning device can comprise the heat transport medium circuit and is therefore based on the liquid heat transport medium, which can be handled with significantly less risk than the refrigerant. Vehicle-compatible standard components are also available for such liquid heat transfer media. Due to the smaller design of the refrigerant circuit this also requires a significantly reduced amount of refrigerant. An interconnection and in particular a switching function from a heating operation to a cooling operation can be carried out readily on the side of the heat transport medium circuit, which is connected to the removal of heat with the gas cooler and / or for dissipating heat to the evaporator. Therefore, there is no need for elaborate valve means in the refrigerant circuit to change the flow of the refrigerant. Rather, it can always flow in a same direction through the refrigerant circuit, regardless of whether the air conditioning device is operated in a heating mode or in a cooling mode. Therefore In any case, solenoid valves can be saved for the refrigerant circuit, and it is also only a single expansion valve, namely the expansion device, necessary. In the heat transport medium circuit inexpensive valve devices can be used, since they are only up to about 2 bar and 90 ° C charged. The liquid heat transport medium may have a high heat capacity, in particular a higher heat capacity than the refrigerant, whereby a buffering effect for heat in the heat transport medium circuit is effective, so that switching on and / or off the air conditioning device and in particular the refrigerant circuit for vehicle occupants are not directly felt. In particular, the entire functionality of an interconnection of the air conditioning device can take place on the side of the heat transport medium circuit, so that simpler and more favorable components can be used here, which operate at a lower pressure and temperature level. This results in a total cost reduction, an increase in reliability, and a better control quality in connection with the air conditioning device proposed here compared to the prior art. Ultimately, it is also readily possible to design the cooling circuit modular, in particular with different refrigerants. The heat transport medium circuit may be standardized, regardless of the design of the refrigerant circuit.

The term "thermal power" includes both heating power and cooling capacity. The fact that the at least one heat transfer device can be supplied with thermal power therefore says nothing about the direction of a heat flow, but rather only that heat is conveyed between the refrigerant circuit and the heat transfer device, namely either to supply heat to the heat transfer device or to heat from the heat transfer device dissipate.

The terms "gas cooler" and "evaporator" are used herein in a general sense, wherein the gas cooler is in particular a heat sink and the evaporator is a heat source of the refrigerant circuit. The term "condenser" can also be used synonymously with the term "gas cooler". In the refrigerant circuit, the refrigerant preferably undergoes a phase transition in operation, wherein it is present in particular after cooling in the gas cooler or condenser in liquid or supercritical phase at a higher pressure, wherein it is expanded in the expansion device and at the latest in the evaporator with heat in a gaseous Phase is transferred at lower pressure. In the compressor, the then gaseous refrigerant is recompressed, whereby it reaches a higher temperature level, wherein it is then cooled again in the gas cooler or condenser and preferably liquefied. The operation of such a refrigerant circuit is basically known, so that will not be discussed in detail.

A liquid heat transport medium is in particular a heat transport medium, which is liquid during operation of the heat transport medium cycle, in particular in the entire heat transport medium cycle. Thus, the heat transfer medium does not undergo phase transformation along the heat transfer media cycle. Particularly preferably, the liquid heat transfer medium under normal conditions, in particular therefore at 25 ° C and 1013 mbar, liquid. The heat transport medium is particularly preferably water. It is possible that the serving as a heat transport medium water additives, such as an antifreeze or the like, are added. A water cycle as a heat transport medium circuit is on the one hand particularly simple and inexpensive to build, on the other hand, water is preferred as a heat transfer medium for safety reasons, as this is safe and environmentally friendly. In addition, water has a very high heat capacity, so that makes the previously described buffer effect in a particularly favorable manner during switching on and / or off.

The fact that the heat transport medium circuit is fluidically and thermally connected to the gas cooler and / or the evaporator means, in particular, that the heat transport medium cycle passes through or flows through the gas cooler and / or the evaporator, the heat transport medium being used in particular in the gas cooler and / or in the evaporator as the heat exchange medium for example, to remove heat from the refrigerant in the gas cooler and / or to supply heat in the evaporator. In this case, in particular in the evaporator and / or in the gas cooler, the refrigerant on the one hand and the heat transport medium on the other hand are in thermal contact with each other.

A heat transfer device is understood to mean, in particular, a device which is set up to release heat in particular to an environment or to take it up from an environment.

According to one embodiment of the invention, it is provided that the refrigerant circuit is free of heat exchange devices with the exception of the gas cooler and the evaporator. In particular, the refrigerant circuit has no other heat exchange means except for the gas cooler and the evaporator. This means in particular that the Refrigerant circuit has only the evaporator and the gas cooler as heat exchange devices. The refrigerant circuit therefore has, in particular, no heat transfer device for exchanging thermal power with an environment, in particular the interior of a vehicle. With the refrigerant circuit, thermal power is preferably exchangeable exclusively via the heat transfer medium circuit.

Alternatively or additionally, the refrigerant circuit is preferably exclusively thermally connected to the heat transport medium circuit. This means, in particular, that the refrigerant circuit is thermally encapsulated, wherein heat can be supplied to it only via the heat transport medium cycle, wherein heat can also be removed from the refrigerant circuit only via the heat transport medium cycle. As a result, the refrigerant circuit may be made particularly small, in particular because it is not used directly for the air conditioning of any facilities, in particular a vehicle interior. Rather, this functionality is exclusively mediated via the heat transfer medium cycle.

According to one embodiment of the invention, it is provided that the heat transfer medium circuit, which can also be referred to as a heat transport medium cycle device, has a first, with the gas cooler fluidly and thermally connected partial circuit. Furthermore, the heat transport medium circuit has a second, with the evaporator fluidly and thermally connected partial circuit. Thus, it is possible to extract heat from the gas cooler on the one hand via different partial circuits and, on the other hand, to supply heat to the evaporator. The first partial circuit and the second partial circuit are different from each other and in particular separable from each other, most preferably separated from each other. It is possible that no exchange of heat transfer medium between the first partial circuit and the second partial circuit is possible. But it is also possible that the two partial circuits are at least partially fluidly connected to each other. Furthermore, it is possible for the heat transport medium circuit to have a valve device, via which the subcircuits can be connected to one another or separated from one another.

According to one embodiment of the invention, it is provided that the heat transfer medium circuit has a valve device, via which the heat transport medium can optionally be supplied to a heat exchanger and / or at least one air conditioning device. The heat exchanger is preferably designed to act as a heat source, in particular in the heat pump or heating mode, or as a heat sink, in particular in the cooling mode, of the heat transport medium cycle, depending on the operating state of the air conditioning device. Particularly preferably, the heat exchanger is designed as an outdoor heat exchanger of the vehicle, which can be arranged for example on a vehicle roof, in particular a bus. In this case, in the air conditioning device proposed here, the exterior heat exchanger of the vehicle flows exclusively through the heat transport medium and not through refrigerant.

The at least one air conditioning device is preferably designed as a heating and / or cooling device, in particular for an interior of the vehicle, and thus preferably serves the interior air conditioning of the vehicle. The heat exchanger on the one hand and the at least one air-conditioning device on the other hand, in particular, represent heat transfer devices of the air-conditioning device.

According to one embodiment of the invention, it is provided that the valve device is set up in order to bring the first partial circuit with the at least one air conditioning device and the second partial circuit with the heat exchanger in fluid communication in a first operating state. This first operating state corresponds to a heating operation of the air conditioning device, wherein the first partial circuit functions as a heating circuit. The heat transport medium removes heat from the refrigerant circuit in the first partial circuit to the gas cooler, which is supplied to the at least one air conditioning device, in particular for the interior heating of the vehicle. At the same time, the heat transport medium can absorb heat in the second partial circuit when flowing through the heat exchanger and feed it to the evaporator of the refrigerant circuit. The refrigerant circuit acts as a heat pump in heating mode.

Alternatively or additionally, it is provided that the valve device is set up to bring the second partial circuit with the at least one air conditioning device and the first partial circuit with the heat exchanger in fluid communication in a second operating state. This second operating state corresponds to a cooling operation. In this case, the heat transport medium absorbs heat in the second partial circuit when flowing through the at least one air conditioning device, in particular from a vehicle interior, and transports this along the second partial circuit to the evaporator of the refrigerant circuit. The heat transport medium in the first partial circuit absorbs heat from the refrigerant circuit as it flows through the gas cooler and transports it to the heat exchanger, where it emits the heat, in particular to the outside air of the vehicle. In this Operating state, the air conditioning device acts as an air conditioner.

To convert the various operating states requires - as already stated - no change in the flow of the refrigerant in the refrigerant circuit. Rather, it only requires a switching of the heat transfer medium circuit associated valve device.

The valve device is preferably configured to connect different air conditioning devices of a plurality of air conditioning devices to the first or the second partial circuit. In this way, in particular locally different air conditioning device can be controlled and thus a heat distribution in the vehicle can be influenced.

The object is also achieved by providing a vehicle having an air conditioning device according to one of the previously described embodiments. The vehicle also has at least one heat transfer device, wherein the at least one heat transfer device is thermally connected to the refrigerant circuit via the heat transport medium cycle. In connection with the vehicle, in particular, the advantages that have already been explained in connection with the air conditioning device. Preferably, the at least one heat transfer device of the vehicle is thermally connected exclusively via the heat transfer medium circuit with the refrigerant circuit. The refrigerant circuit is therefore not used in particular for the direct air conditioning of the vehicle, but only mediates the heat transport medium cycle.

According to one development of the invention, it is provided that the at least one heat transfer device is selected from a group comprising an exterior heat exchanger of the vehicle, a vehicle interior air conditioning device, a driver's seat air conditioning device, a vehicle floor air conditioning device, and a vehicle roof air conditioning device. Particularly preferably, the vehicle has at least one of each of the heat transfer devices mentioned here. It is also possible for the vehicle to have a plurality of at least one of the heat transfer devices mentioned here, for example a plurality of vehicle floor air conditioning devices and / or a plurality of vehicle roof air conditioning devices. The valve device is preferably designed for particular variable and different control of the various heat transfer devices, and it is particularly adapted to distribute the thermal power to the various heat transfer devices. The outdoor heat exchanger is in particular the heat exchanger of the heat transport medium cycle.

According to one embodiment of the invention, it is provided that the first subcircuit is fluidly connected to at least one driver's seat air conditioning device, at least one vehicle floor air conditioning device and at least one vehicle roof air conditioning device. In this way it is particularly possible to heat in the heating operation the driver's seat, the vehicle floor and the vehicle roof - preferably controlled by the valve device as needed. It is possible that the first sub-circuit is connected to a plurality of vehicle floor air conditioning devices and / or a plurality of vehicle roof air conditioning devices. A heating of both the vehicle roof and the vehicle floor is useful because it can result in a particularly favorable temperature stratification in the vehicle. This represents a further advantage compared to the prior art, because with a direct use of the refrigerant circuit for vehicle air conditioning - depending on the arrangement of the refrigerant circuit - only the vehicle roof or only the vehicle floor with thermal power can be acted upon, otherwise it is too large and ultimately would also need to expensive piping for the refrigerant circuit. In contrast, the heat transfer medium circuit can be readily designed large enough to apply to both the vehicle roof and the vehicle floor. In particular, the heating of the vehicle floor is useful, since the hot air generated during heating rises to the top. In this case, a convection heating effect can be effected. Alternatively or additionally, the vehicle heating can be assisted by a blower, whereby in particular the effect of the convection heating effect can be improved.

It is also possible that the first partial circuit is not connected to a vehicle roof air conditioning device, in particular only with a driver's seat air conditioning device and at least one vehicle floor air conditioning device. A heating of the vehicle floor can in principle be sufficient for heating the vehicle interior.

Alternatively or additionally, it is preferably provided that the second partial circuit is fluidly connected to at least one driver's seat air conditioning device and at least one vehicle roof air conditioning device. In this way, the driver's seat and the vehicle roof can be cooled via the second partial circuit. Preferably, the second partial circuit is not with a vehicle floor air conditioning device fluidly connected. Such a fluid connection can be saved in particular also from a cost and efficiency point of view as well as for physical reasons, since the cold air formed on the vehicle floor would remain there, so that in order to achieve a cooling effect in the vehicle, it would have to be distributed with additional fan power. However, this would lead to unpleasant drafts, especially in the foot area of vehicle occupants.

The driver's seat air-conditioning device preferably comprises at least one cooling heat exchanger and at least one heating heat exchanger. In this case, the heating heat exchanger is preferably fluid-connected to the first partial circuit, wherein the cooling heat exchanger is fluid-connected to the second partial circuit. Further, the driver's seat air conditioning apparatus may include a fan and louvers for regulating a supply of fresh air and air distribution to vents on a windshield, particularly a windshield of the vehicle, to the feet of a driver of the vehicle and, if present, a man's vent in the upper body region of the driver.

According to one embodiment of the invention, it is provided that the first partial circuit is connected to a Zuheizvorrichtung. This is in particular an additional heater that can be operated with a fuel, such as diesel, gas or the like. In particular, the auxiliary heating device can be activated or deactivated independently of the refrigerant circuit. It can also be used in particular to provide additional and / or faster heating power when the refrigerant circuit, for example, at a start of the vehicle in winter, does not heat quickly enough or only generates too low heat output.

The first partial circuit is preferably connected to the auxiliary heating device fluidically and / or thermally, in particular fluidically and thermally.

On a Zuheizvorrichtung but can preferably be dispensed with, since the power potential of the refrigerant circuit, in particular as a heat pump, can be fully utilized. In particular, this does not have to be regulated back due to otherwise unfavorable temperature stratification.

According to one embodiment of the invention, it is provided that the vehicle is designed as a bus, in particular as a bus. The vehicle is used to carry passengers, especially a larger number of people, in particular more than five or more than seven persons as intended. In particular, the vehicle may be designed as a city bus or as a long-distance bus, in particular as a coach.

The use of the air conditioning device described here is by no means limited to this type of vehicle, but the air conditioning device proposed here can be used in any type of vehicle. The vehicle may therefore also be a passenger car, a truck or a commercial vehicle of another type, or a ship, a railway vehicle, an aircraft or the like.

It turns out that the air conditioning device proposed here is also very favorable for a defrosting of the outdoor heat exchanger (heat exchanger for exchanging heat or cold with the vehicle environment) of the vehicle, because in a simple way waste heat from components of the vehicle, such as power electronics, in the heat exchanger, in particular in the outdoor heat exchanger, can be fed, said heat from there via the heat transport medium circuit first the refrigerant circuit and then finally a defrosting provided for air conditioning device can be supplied.

The invention will be explained in more detail below with reference to the drawing. The single figure shows a schematic representation of an embodiment of a vehicle with an embodiment of an air conditioning device.

The single figure shows a schematic representation of a vehicle 1 , which is preferably designed as a bus, and which is an air conditioning device 3 having.

The air conditioning device 3 has a refrigerant circuit 5 along, along which a refrigerant is conveyed. The refrigerant circuit 5 has a compressor 7 , a gas cooler 9 , an expansion device 11 and an evaporator 13 on. In the refrigerant circuit 5 the refrigerant is passed through the compressor 7 compressed, then the gas cooler 9 in which it is cooled, wherein the compressed and cooled refrigerant in the expansion device 11 is relaxed, after which it is the evaporator 13 flows through it, in which it absorbs heat, after which it in turn to the compressor 7 flowing back.

In this way, the gas cooler 9 a heat sink of the refrigerant circuit 5 where the evaporator 13 a heat source of the refrigerant circuit 5 represents.

The air conditioning device 3 also has a heat transfer medium circuit 15 on, in which a liquid heat transport medium is conveyed. The heat transport medium cycle 15 is with the gas cooler and / or the evaporator - here with the gas cooler 9 as well as with the evaporator 13 - Fluidically and thermally connected such that thermal power of the refrigerant circuit 5 via the heat transfer medium circuit 15 to at least one heat transfer device 17 is eligible.

The refrigerant circuit 5 points here except the gas cooler 9 and the evaporator 7 no further heat exchange device. In particular, the refrigerant circuit 5 only with the heat transfer medium circuit 15 thermally connected. The refrigerant circuit 5 is therefore designed in particular encapsulated. He can build in this way very small and requires only a small amount of refrigerant. An interconnection in particular of the entire functionality of the air conditioning device 3 can thereby advantageously on the part of the heat transport medium circuit 15 take place, which is easier and in particular cost-effective.

The heat transport medium cycle 15 , which in particular represents a heat transport medium circulation device, has a first partial circuit 19 on that with the gas cooler 9 fluidically and thermally connected. He also has a second subcircuit 21 on that with the evaporator 13 thermally and fluidically connected. The subcircuits 19 . 21 are preferably separable from one another, particularly preferably by means of a valve device, in particular they are separated from one another.

Furthermore, the heat transfer medium circuit 15 a valve device having a plurality of valves 23 on, via which the heat transport medium optionally as a heat transfer device 17 designed heat exchanger 25 , in particular an outdoor heat exchanger 27 of the vehicle 1 , and / or at least one air conditioning device 29 as a heat transfer device 17 can be fed.

The valve device 23 is in particular set up in a first operating state, in particular a heating operation, the first partial circuit 19 with the at least one air conditioning device 29 and the second subcircuit 21 with the heat exchanger 25 to connect, and further in a second operating state, in particular a cooling operation, the second partial circuit 21 with the at least one air conditioning device 29 and the first subcircuit 19 with the heat exchanger 25 to bring in fluid communication.

The at least one heat transfer device 17 Incidentally, it is preferably selected from a group consisting of the outdoor heat exchanger 27 , a vehicle interior air conditioning apparatus, a driver's seat air conditioning apparatus 31 , a vehicle floor air conditioning device 33 , and a vehicle roof air conditioning device 35 ,

Here is the first part cycle 19 with the driver's seat air conditioning device 31 , the vehicle floor air conditioning device 33 and the vehicle roof air conditioning device 35 fluidly connected. In this case, the driver's seat air conditioning device 31 prefers exactly a heating heat exchanger, wherein the vehicle roof air conditioning device 35 Preferably, a plurality, in particular two heating heat exchanger, wherein the vehicle floor air conditioning device 33 preferably has a plurality, in particular a larger number of heating heat exchangers than the vehicle roof air conditioning device 35 , The heating heat exchangers are in each case with the first partial circuit 19 fluidly connected.

The second partial cycle 21 is here with the driver's seat air conditioning device 31 and with the vehicle roof air conditioning device 35 fluidly connected. In this case, the driver's seat air conditioning device 31 prefers exactly a cooling heat exchanger, wherein the vehicle roof air conditioning device 35 preferably has a plurality of cooling heat exchangers, in particular two cooling heat exchanger. The cooling heat exchangers are each with the second partial circuit 21 fluidly connected.

The vehicle floor air conditioning device 33 preferably has no cooling heat exchanger and is not with the second partial circuit 21 connected.

By means of the valve device 23 is preferably the inflow to the individual heating and / or cooling heat exchangers of the individual air conditioning devices 29 controllable.

It still shows that the first partial cycle 19 preferably with a Zuheizvorrichtung 37 - In particular fluidically and thermally - is connected, wherein the Zuheizvorrichtng 37 preferably independent of the refrigerant circuit 5 can be activated and deactivated, and wherein the Zuheizvorrichtung 37 is preferably set to additionally or alternatively to the refrigerant circuit 5 Heating power in the first partial circuit 19 contribute.

It also shows that preferably both the first part cycle 19 as well as the second partial cycle 21 each a conveyor 39 . 41 have, wherein the conveyors 39 . 41 are set up to the heat transfer medium along the subcircuits 19 . 21 to promote, with the conveyors 39 . 41 are preferably designed as pumps, in particular as water pumps.

As a heat transport medium is in the heat transport medium circuit 15 preferably water is used.

The operation of the air conditioning device 3 is in the different operating conditions in particular the following:
In the first operating state, that is, in the heating mode, the air conditioning devices 29 over the first partial cycle 19 Heat from the gas cooler 9 supplied, wherein the first partial circuit 19 preferably not with the outdoor heat exchanger 27 fluidly connected. The second partial cycle 21 is with the outdoor heat exchanger 27 fluidly connected, so that heat from the environment in the second subcircuit 21 taken and the evaporator 13 of the refrigerant circuit 5 can be supplied. The second partial cycle 21 is preferably not with the air conditioning devices 29 connected.

In the second operating state, thus in the cooling mode, the second partial circuit is preferred 21 not with the outdoor heat exchanger 27 but with the air conditioning devices 29 connected, so this heat extracted and the evaporator 13 of the refrigerant circuit 5 can be supplied. The first partial cycle 19 is preferably not with the air conditioning devices 29 , but with the outdoor heat exchanger 27 connected, so that waste heat of the refrigerant circuit 5 from the gas cooler 9 the outdoor heat exchanger 27 can be supplied.

Intermediate states between the first operating state and the second operating state are preferably also possible, the subcircuits 19 . 21 For example, at the same time with at least one of the air conditioning devices 29 may be connected to a variable temperature or temperature distribution in the interior of the vehicle 1 adjust.

Overall, it turns out that the air conditioning device proposed here 3 inexpensive, simple and can be designed with a high level of security, especially because of the refrigerant circuit 5 very small and preferably encapsulated can be configured.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10161254 A1 [0002]

Claims (10)

Air conditioning device ( 3 ) for a vehicle ( 1 ), with - a refrigerant circuit ( 5 ), along which a refrigerant is conveyed, wherein - the refrigerant circuit ( 5 ) a compressor ( 7 ), a gas cooler ( 9 ), an expansion device ( 11 ) and an evaporator ( 13 ), and having - a heat transfer medium circuit ( 15 ), in which a liquid heat transport medium can be conveyed, characterized in that - the heat transfer medium circuit ( 15 ) with the gas cooler ( 9 ) and / or with the evaporator ( 13 ) of the refrigerant circuit ( 5 ) is fluidically and thermally connected such that thermal performance of the refrigerant circuit ( 5 ) via the heat transfer medium circuit ( 15 ) to at least one heat transfer device ( 17 ) is eligible. Air conditioning device ( 3 ) according to claim 1, characterized in that the refrigerant circuit ( 5 ) - no other heat exchange device except the gas cooler ( 9 ) and the evaporator ( 13 ), and / or - only with the heat transfer medium circuit ( 15 ) is thermally connected. Air conditioning device ( 3 ) according to one of the preceding claims, characterized in that the heat transfer medium circuit ( 15 ) a first, with the gas cooler ( 9 ) fluidically and thermally connected partial circuit ( 19 ) and a second, with the evaporator ( 13 ) fluidically and thermally connected partial circuit ( 21 ) having. Air conditioning device ( 3 ) according to one of the preceding claims, characterized in that the heat transfer medium circuit ( 15 ) a valve device ( 23 ), via which the heat transport medium optionally a heat exchanger ( 25 ) and / or at least one air conditioning device ( 29 ) can be fed. Air conditioning device ( 3 ) according to one of the preceding claims, characterized in that the valve device ( 23 ) is set up to a) in a first operating state, the first partial circuit ( 19 ) with the at least one air conditioning device ( 29 ) and the second subcircuit ( 21 ) with the heat exchanger ( 25 ), and / or b) in a second operating state, the second partial circuit ( 21 ) with the at least one air conditioning device ( 29 ) and the first partial cycle ( 19 ) with the heat exchanger ( 25 ) in fluid communication. Vehicle ( 1 ), with an air conditioning device ( 3 ) according to one of claims 1 to 5, and with at least one heat transfer device ( 17 ), wherein the at least one heat transfer device ( 17 ) mediated via the heat transport medium cycle ( 15 ) thermally with the refrigerant circuit ( 5 ) connected is. Vehicle ( 1 ) according to claim 6, characterized in that the at least one heat transfer device ( 17 ) is selected from a group consisting of an outdoor heat exchanger ( 27 ), a vehicle interior air conditioning apparatus, a driver's seat air conditioning apparatus ( 31 ), a vehicle floor air conditioning device ( 33 ), and a vehicle roof air conditioning device ( 35 ). Vehicle ( 1 ) according to one of claims 6 and 7, characterized in that the first partial circuit ( 19 ) with at least one driver's seat air conditioning device ( 31 ), with at least one vehicle floor air conditioning device ( 33 ), and with at least one vehicle roof air conditioning device ( 35 ) is fluid-connected, and / or that the second partial circuit ( 21 ) with at least one driver's seat air conditioning device ( 31 ) and at least one vehicle roof air conditioning device ( 35 ) is fluidly connected. Vehicle ( 1 ) according to one of claims 6 to 8, characterized in that the first partial circuit ( 19 ) with a Zuheizvorrichtung ( 37 ) connected is. Vehicle ( 1 ) according to one of claims 6 to 9, characterized in that the vehicle ( 1 ) is designed as a bus.

Images