DE102006044922A1 - Air conditioning system for motor vehicle, has primary circuit, utility circuit coupled to secondary circuit, and line and pipe combination provided with outlet for fluid-mechanical connection of primary circuit with secondary circuit - Google Patents

Abstract

The system (1000) has a primary circuit (100), and a secondary circuit (200) connected parallel to the primary circuit. A utility circuit (300) is coupled to the secondary circuit. A line and pipe combination (500) is provided with two inlets and an outlet for fluid-mechanical connection of the primary circuit with the secondary circuit. An inflowing circulation medium is set to geometrical edge conditions such that the circulation medium reduces static pressure of another inflowing circulation medium before conjunction of the former circulation medium. An independent claim is also included for a method for operating an air conditioning system.

Description

The The invention relates to a performance and mode of operation optimal and economical, i. efficient air conditioning, for example a vehicle with a primary circuit and a parallel to it Secondary circuit with at least one useful circuit which can be coupled to the secondary circuit.

Lots Today's, mostly heavy trucks (trucks) of freight forwarders show next to a driver's compartment frequently additionally also one for Cab provided for the driver, in which the driver the opportunity is given to rest or to sleep. It is known, especially in the summer many heavy truck drivers whose trucks are conventional Air conditioning systems, often the vehicle drive units, i. Internal combustion engines overnight go through to over that made it possible Operation of the air conditioning to cause a corresponding cooling of the sleeping cabin. However, such an operation (Idling) charged due to the high fuel consumption of the running engine the environment very much strong and energetically very unfavorable. Along with it arising large wear especially on the vehicle engines, are high consumption and maintenance costs the episode. Apart from that, the driver is constantly annoying and unpleasant noise and exposed to vibration.

Around the driver's compartment as well as the sleeping compartment in the sense of adequate To be able to appropriately condition working and recreational conditions are Air conditioning systems with integrated stationary air conditioning systems have been developed which are installed in the vehicles.

Around now especially by running the internal combustion engine resulting, additional Fuel and maintenance costs counteract, and the resulting To reduce toxic exhaust gases are several, the prior art corresponding, motor vehicle independent solutions of stationary air conditioning systems, for their operation the internal combustion engine can be switched off, known.

Next the use of so-called self-sufficient air-conditioning systems, which over An additional Internal combustion engine can be driven, the operation of a primary air conditioning at switched off the internal combustion engine of the vehicle via a electric engine happen, the compressor of the air conditioner drives. Electrical energy for intended for this purpose Additional accumulators will be during the ride generated and stored in it.

Next other alternatives to stationary air conditioning systems for vehicles, are for the fulfillment the described requirements and goals also called latent cold storage systems known, which has sufficient cooling energy at high energy density even while the standstill of the drive unit can provide. such Systems have besides a first, conventional, i. With known, thermodynamically to the flowing circulation medium of the air conditioner acting components constructed primary circuit, another second, to the primary circuit the air conditioning parallel secondary or coolant circuit of the same Configuration, which for charging a Latentkältespeichers a thermodynamically coupled refrigerant circuit is used. The Coupling of the second, parallel to the first circuit linked or connected circuit with the refrigerant circuit in this case by means of a within a Latentkältespeichereinrichtung of Refrigerant circuit integrated heat exchanger unit.

Out DE 10 2004 019 607 A1 a heating and air conditioning system for a motor vehicle is known, which can heat and cool a front and a rear area of a motor vehicle interior separately. The air conditioning system comprises a front system, a rear system and a stand system integrated in the rear system, wherein the stand system can be used for heating and cooling the rear area with the internal combustion engine switched off. It also describes a method of air conditioning using the HVAC system (heating, ventilating and airconditioning). The disclosure therefore represents an air conditioning system, which includes the compressor, condenser, blower, collector, solenoid valve, expansion element and evaporator in the front area. Furthermore, the evaporator another evaporator, which can be assigned to the rear system, connected in parallel. The second circuit, ie the rear system comprises in addition to the other evaporator nor the components solenoid valve, expansion element and blower. Parallel to the evaporators of the front and rear system is a storage evaporator heat exchanger unit, which is part of both the rear and the stand system, connected via a further solenoid valve and an expansion element. The circuit of the rear system also has a pump and a cooling heat exchanger. The latent cold storage of the storage evaporator heat exchanger unit can thus be charged via the circuit of the front and rear system. In the event that additional cooling capacity, ie additional need for cooling the vehicle interior exists, which goes beyond the cooling power generated by the front and rear system, the cold storage of the storage evaporator heat exchanger unit via the heat transfer medium be discharged with the help of the pump. To accomplish the charging of the latent cold storage in a timely manner, the evaporating temperature below 0 ° C must decrease from the beginning of the charging process to the end of the heat extraction of the storage unit. The thus decreasing evaporation temperature level can be realized with this system only if the corresponding solenoid valves are closed in order to avoid icing problems in particular at the evaporators of the front system. In this state, only the storage-evaporator-heat exchanger unit is connected to the circuit operated by the compressor. By this system configuration or associated operation, the evaporator for the cold storage reaches the required below 0 ° C evaporation temperature level and the risk of undersupply or a lack of supply of the cab with fresh air and thus an increase of carbon dioxide above the maximum occupational concentration value (MAC) by icing of the evaporator is banned. With the described in this document air conditioning system, it is not possible to cool the vehicle interior, as well as parallel, ie to accomplish the same time the charging of the latent cold storage of the storage evaporator heat exchanger unit. It is therefore not possible to completely switch off the interior cooling for the duration of the charging process of the cold accumulator. The charging process of the cold accumulator is therefore carried out when the air outlet temperature of the evaporator of the front system falls below the icing temperature. If the evaporator air outlet temperature has again reached a value well above 0 ° C, the charging process of the cold accumulator is interrupted and the conventional air conditioning circuit is reactivated. This results in a large variation of the air outlet temperature of the evaporator of the front system, which considerably reduces the air conditioning comfort with a corresponding more or less cyclical operation of the solenoid valves or the associated circulation paths. In addition, a more or less periodic operation of the solenoid valves of the HVAC system with regard to the charging process of the latent cold accumulator generates highly transient coolant flow, which generates unpleasant noises and vibrations. It should be added that due to this configuration, optimized air distribution system of the front system is not suitable for distributing warm air accordingly. Thus, with additional, necessary blowers, ie fans and filters additional maintenance requirements are given, which also increase the cost accordingly. Furthermore, it can be stated significantly that the charging process of the latent cold storage takes correspondingly long time.

In the DE 198 38 880 A1 a device for cooling an interior of a motor vehicle is described which has a primary components equipped with known components Kaltskreislauf cooling a main circuit of a secondary circuit, the main circuit is thermodynamically coupled to a cold storage cold storage and a heat exchanger having heat transfer secondary circuit. The storage secondary circuit and the heat transfer secondary circuit can be operated in parallel, ie simultaneously. The control and valve unit of the secondary circuit can adjust the proportions or amount of the refrigerant flow of the main circuit for the cold storage of the Speichernbenkreislaufs and for the heat exchanger of the Wärmeübertragernebenkreislaufs and thus allow a parallel operation. In the main task of air conditioning or cooling of the vehicle interior additional heat transfer is required, which drops the intake temperature of the circulation medium of the compressor significantly. The lower temperature in the intake of the compressor thus has a reduced efficiency and thus increased fuel consumption for vehicle interior cooling result.

The Object of the present invention is to provide a advantageous, efficient air conditioning, which has a Primary circuit and a fluidic parallel connected secondary circuit features, in the case of the secondary circuit thermally couple a Nutzkreislauf, the operation and the operation of the air conditioning is optimized.

The The object is solved by the features of the independent claims, wherein expedient embodiments by the characteristics of dependent claims are described.

According to the invention, an air conditioner is provided, which is particularly advantageous in a vehicle used or can be installed in a vehicle. In this case, the air conditioning system has at least one primary circuit and at least one secondary circuit linked thereto in parallel, and at least one useful circuit which can be coupled to the secondary circuit, which can be, for example, a latent cold storage circuit of a stationary air conditioning system with latent cold storage. The primary circuit, which for example functions advantageously as a standard air conditioning system operating according to known methods, is fluid-mechanically linked to the secondary circuit, ie the primary and secondary circuits of the air-conditioning system form a closed system with respect to the circulating or circulating working or circulation medium. As a closed system here is filled with a substance defined understood closed space in which neither mass is supplied nor discharged, but doing technical work done on him and / or heat can be transported across the system boundaries. The self-contained useful circuit is thermally coupled via a heat exchanger device to the secondary circuit. Thus, a heat exchange between the secondary circuit and the Nutzkreislauf take place.

As already stated, the useful cycle can be advantageous, for example be a stationary air conditioning system with Latentkältespeicher, in which case in use of the air conditioning system according to the invention the charge of latent cold storage optimal while the operation of the primary or standard climate cycle with the drive unit running, continuous and can happen quickly, advantageously within 2.5 hours. The following is therefore mainly the use of the air conditioning system according to the invention described in more detail in connection with a stationary air conditioning system with Latentkältespeicher and explains or explain their effects, however, it should be noted that the utility cycle is not necessarily must be a stationary air conditioning system with Latentkältespeicher.

The fluid mechanical linkage of the primary circuit with the secondary circuit, i.e. merging or coincidence of the respective streams of the circulation medium, which through the primary circuit and the secondary circuit flow, takes place at least with a device which advantageous at least two entrances and having an output. As a result, the streams of the circulating medium unite to a stream, which can later be divided accordingly again or split, depending on the operating mode of the air conditioner. One there, i. in the device inflowing circulation medium exposed there to other geometric constraints than another, inflowing there Circulation medium, such that the inflowing circulation medium the static Pressure of the other incoming Reduced circulation medium before the meeting of the circulation media.

Either the primary circuit as well as the secondary circuit includes in the air conditioning system according to the invention according to known, essential or necessary components and each works according to the same known thermodynamic cycle or circulation processes. These components are for example Heat exchanger means, one of which is advantageous for the two circuits common heat exchanger device as a capacitor, i. condenser with regard to the pouring Circulation medium and two heat exchanger devices as an evaporator for each act a cycle with respect to the flowing circulation medium. Furthermore is for each circuit upstream of each as the evaporator functioning heat exchanger device, i.e. between condenser and evaporator an expansion device For example, advantageously in the form of an expansion valve or a throttle provided. This serves, for example, an under high pressure and in liquid State of aggregation present, flowing or incoming circulating medium in a state of lower pressure and lower temperature, so that it in the downstream arranged evaporator by a subsequent evaporation process Heat off can absorb the environment.

Of Another is to operate such a thermodynamic cycle at least one compacting device is required for air-conditioning, which one for that ensures that the circulation medium on the one hand in the closed System of circulation (s) circulated, i. moving offset and on the other hand compacted. It is advantageous for the operation of two fluid mechanical parallel linked air conditioning circuits such in the air conditioning system according to the invention only one compression device is provided which extends between the both evaporators of the circuits and located on the common capacitor. On other components like for example, temperature switches, liquid containers, filter driers, etc. which may be integrated in such an air conditioner is not received, since they like the already described and described Components or air conditioning with two fluid-mechanically connected in parallel cycles are known.

Due to the fact that, in the air conditioning system according to the invention, in which a primary circuit is fluid-mechanically linked to a secondary circuit via at least one device, the one circulating medium which flows through one circuit reduces the static pressure of the other circulating medium, resulting in circulation with the circulating medium. in which the static pressure of the circulation medium reduces the substantial advantage, according to which this circuit is thermally efficient, that is more effective in terms of heat exchange processes via a heat exchanger means, as without such a device. The reduction of the static pressure of the other circulating medium flowing into the device through the circulating medium flowing into the device takes place immediately before the coincidence of the circulating media. For example, thus an even lower evaporator temperature of an evaporator (advantageously -7 ° C) of the circuit with the circulation medium, the static pressure is reduced or is, associated with it. In other words, thus one can contribute to this cycle For example, thermally coupled Latentkältespeicherkreislauf a stationary air conditioning system with Latentkältespeicher (Latentkältespeichersystem) in the form of a Latentkältespeichereinrichtung the Latentkältespeicher even more heat are withdrawn and this in even lesser time or even shorter duration, preferably within 2.5 hours. Further advantages, according to which the static pressure and the temperature of the other circulatory medium are significantly reduced by using such a device, are given below, for example, by means of a coupled latent cold storage cycle. It should be noted that it will be apparent to those skilled in the art that in this case the geometric boundary conditions of such a device for linking two circuits or circulation media of such a closed air conditioning system described in addition to curvatures and / or cross sections or cross-sectional changes, for example, special surfaces to achieve Friction effects or influences may include by friction, which have the same effect of lowering the static pressure or the temperature of the respective circulation medium.

Preferably elevated the dynamic pressure of the other circulation medium. Thereby Thus, the charging process of a correspondingly thermally coupled Latent cold storage optimal and shorter Time has happened.

Advantageous This is the device of the air conditioner according to the invention in the intake of a for the primary circuit and the secondary circuit common compression device. This is for example a continuous parallel operation of the primary circuit and the secondary circuit possible.

In An advantageous embodiment is in the air conditioner according to the invention the secondary circuit connected to the second input of the device and is from the other Traversed by circulation medium. This results, as already shown and partially described, for the secondary circuit an optimal mode of operation with regard to the possible thermal Coupling of a Nutzkreislaufs such as a Latentkältespeicherkreislaufs. Advantageously, the evaporator temperature of the evaporator of the secondary circuit then by 2 to 10K lower than the evaporator temperature of the Evaporator of the primary circuit and is advantageously in the range between -4 ° C and -12 ° C. This can, as already indicated, very beneficial in the context of the Nutzkreislaufs example coupled latent cold storage charge.

Especially advantageous is the couplable to the secondary circuit Nutzkreislauf at least one stationary air conditioning system with a latent cold storage device. This can be in the air conditioning system according to the invention the latent cold storage over the Secondary circuit for example, fast and at very low evaporator temperatures an evaporator of the secondary circuit be charged efficiently. Alternatively, however, are also more Nutzkreisläufe conceivable, such as for the operation of a refrigerator, which in the Car carried becomes.

Advantageous is the device as a tubular pipe union in a substantially T-shape executed. This is especially a simple and inexpensive manufacturing process connected. Conceivable would be natural too Conduits in substantially Y-shape, in which then geometric boundary conditions are carried out accordingly.

Preferably forms in an air conditioner according to the invention with such a device described the position of the cross-sectional plane a first input with the position of the cross-sectional plane of a second Entrance of the device for the fluid-mechanical connection of two cycles an angle which is in the range of 60 ° to 120 °, but in particular preferably 90 °. there the position of the cross section of the first input is advantageously parallel the position of the cross-section of the outlet of the device. Thereby will have a further beneficial effect on the corresponding incoming Circulation media achieved, after which one according to the output arranged compacting device can work more efficiently, i. fewer necessary drive power needed.

Advantageous has the tubular Wiring Association circular cross sections. This can be done realize a relatively simple manufacture of the device. The circular cross sections have a favorable effect on the flowing circulation media in terms of losses. Of course, it is also possible a device or conduit assemblies with square, rectangular or oval, i. ellipsoidal Cross-sections.

Preferably the inner diameter of the second inlet is greater than the inner diameter of the first entrance. As a result, the circulation medium, which in the second input flows in, more Space or space available put, which leads to a lowering of the pressure.

Advantageously, the inner diameter of the first input of the device is in the range of 12 mm to 14 mm and the inner diameter of the second input of the device in the range of 14 mm to 16 mm. The same applies preferably also for the corresponding circulation medium leading lines.

In an advantageous embodiment, the device according to the first input a nozzle structure. By doing so leaves itself with appropriate execution a suction effect on the other, flowing into the device circulation medium achieve, this beispielswei se on the one hand, the necessary drive power a compacting device and on the other hand reduces the efficiency of the other circulation medium with respect to heat exchange processes. For example can thereby the evaporator temperature of a with this circulation medium appropriately operated evaporator for charging a Latentkältespeichers reduced by 3K to -10 ° C become.

Advantageous is the nozzle structure formed essentially in the form of a Laval nozzle. In such a Nozzle takes place first a continuous cross-sectional taper (convergence) towards a minimum cross section and subsequently until the outlet of the fluid or the circulation medium, a cross-sectional widening (Divergence). By integrating a nozzle of the described form thus experiences the inflowing into the first entrance Circulation medium is an acceleration, i. the kinetic energy of first circulation medium increases. This arises when leaving from the Laval nozzle now a suction effect, i. a negative pressure on that in the second input other, inflowing Cycle medium. For example, the associated suction on the one hand to relieve a arranged after the output of the device or located compressor device lead. On the other hand, the thermal efficiency of the sucked, other circulation medium elevated, which, for example, when operating an upstream arranged and from the other circulating medium flowed through the evaporator Evaporation process, i. during heat exchange reduces the evaporator temperature and the absorbed heat transported away faster becomes.

Preferably the nozzle structure extends at least about the width of a recess for the second entrance in the facility. This is mainly the suction, i.e. the negative pressure of the circulation medium, which through the nozzle structure passes through, on the other, in the second input inflowing circulation medium increases.

Advantageous For example, the device in front of the exit comprises a diffuser structure, i. one downstream continuous, continuous cross-sectional expansion. The Diffuser structure is advantageously carried out rotationally symmetrical. The Diffuser structure is advantageous after a point after the coincidence of the circulation media entering the facility. A diffuser structure has the reverse effect of a nozzle, i. the Speed of the flowing Circulation medium or here this now mixed circulation media of the circulating medium which has entered at the first inlet and of the second input receded circulation medium is reduced whereby the pressure increases at the same time becomes. This has the advantage of requiring the work to be done Compressor for sucking can be reduced or is reduced.

Preferably is the cone angle of the diffuser structure to the longitudinal axis of the diffuser structure in the range of 2 ° to 15 °, in particular however in the range of 3 ° to 8 °. Thereby For example, a streamlined in terms of the circulation medium State reached, after which losses are reduced.

Especially in an air conditioning system according to the invention, the nozzle structure and / or are preferred the diffuser structure made by an extrusion process. Thereby can These components of the device can be made quickly and easily. Furthermore, it would be the production also by a blowing process, injection or a casting process by means of appropriate molds conceivable.

Advantageous the second input of the device is designed as a drawn connection sleeve. Thereby let yourself a corresponding circulation medium-carrying line with easy connect this, for example, by a soldering or welding process. Accordingly, the assembly or assembly of the device with circulation medium leading Lines considerably simplified. On the other hand, for example an integral version of the realized first input to the second input and the output become.

Preferably is the nozzle structure after the first entrance of the facility in a cross-sectional extension Section arranged, the installation, for example, advantageous from the side where the output is located. In order to connected is also the location of the diffuser structure, which is located in front of the exit and which also like the nozzle structure from the opening the output can be used in the device ago.

At least on one part of the surface of the nozzle structure, at least one O-ring is advantageously located, ie at least a part of the surface of the nozzle structure is surrounded by an O-ring or the O-ring is surrounded by the nozzle structure. The resulting advantage is, for example, the sealing of the nozzle structure against the surfaces of the first input with appropriate design and installation. On the other hand, this also provides a possibility for mounting the nozzle structure, since advantageously the O-ring is in the compressed state and thus also avoids slippage of a nozzle structure of this type in the device.

The nozzle structure and the diffuser structure can preferably as separate components or individual parts of the device be made, which after installation between the nozzle structure and the diffuser structure is at least one spacer. By a single part production of nozzle structure and diffuser structure corresponding manufacturing processes are greatly simplified. Also the installation and the attachment or the assembly in the device means Spacers, O-rings, etc. is simplified. Likewise, by such execution also the possibility the replacement of these circulation medium-influencing components the device if a component has been damaged or broke. Of course, this is also connected with it replacement by other nozzle structure or Diffusorstrukturgeometrien or components and thus a Adaptability of the device for intended for this purpose correspondingly different sized air conditioning circuit systems.

Advantageous is the nozzle structure with the circulation medium leading Headed for the first input at the first input via a clamping device of Device connected and the circulation medium leading lines on the second Input and connected at the output of the device cohesively with the device. This results in the advantage that the assembly is simplified is.

In a preferred embodiment the air conditioning system of the invention can the nozzle structure and / or the diffuser structure over the exit into the facility. This is on the one hand an interchangeability of these circulation medium-influencing components given the institution, on the other hand, in addition to an associated simplified manufacture of the device or its components also simplifies the assembly or assembly. Of course you can the device also completely executed in integral construction become.

Advantageous the diffuser structure is frictionally engaged with the outlet or the Output range connected to the output or the output range has a conical shape. This allows the diffuser structure quickly and easily integrate into the device.

zwischen dem Primärkreislauf 100 und dem Sekundärkreislauf 200 im Bereich von 0.4 bis 0.8 liegt.Preferably, in an air conditioning system according to the invention, the mass flow of the circulating medium through the diffuser structure ( 14 ) in the range of 50 kg / h to 250 kg / h, wherein the mass flow ratio

between the primary circuit 100 and the secondary circuit 200 in the range of 0.4 to 0.8.

Advantageous is in an air conditioner according to the invention additionally to set up a bypass line with an adjusting device between the suction area of the compacting device and the area provided the first input of the device. It can, for example advantageous the operation of the primary circuit switched off or set if secondary circuit for quickly charging an empty latent cold storage one thermally coupled latent cold storage cycle a stationary air conditioning system with Latentkältespeicher is used.

Preferably the adjusting device is designed as a solenoid valve. solenoid valves work reliably, are simple in construction and can be produced cheaply.

Advantageous the adjusting device is designed as a differential pressure valve. In order to let yourself for example, one of the two circuits depending on the set pressure level automatically depending on Operate the operating state of the other circuit.

Preferably is in the air conditioning system according to the invention the pressure difference between the output and the second input the other circulation medium of the device in the range of 0.2 bar to 1 bar smaller than between the exit and the first entrance of a circulation medium of the device, thus a practical equal pressure difference to find again on the thermally active components.

Advantageous the device is made of plastic, preferably made Polypropylene (PP), polyamide (PA), polyphthalamide (PPA) or polyphenylene sulfide (PPS). Leave it a correspondingly simple manufacturing process of the device or depending on the design & execution of Implement components of the device.

Preferably is in the air conditioning system according to the invention the device as an integral part of the connection area a compression device executed.

Also provided is a method for operating an air conditioning system, in particular for a vehicle, having a primary circuit and a secondary circuit connected thereto in parallel, and having at least one useful circuit which can be coupled to the secondary circuit, at least one device having at least two inputs and one output being provided for the fluid-mechanical connection of the primary circuit to the secondary circuit in which a circulating medium flowing in there is exposed to other geometric boundary conditions than another circulating medium flowing in there, the static pressure of the other circulating medium being reduced by the one circulating medium before the circulation media come together.

Advantageous In the method of operating an air conditioner, the dynamic one becomes Pressure of the other circulation medium increased.

Farther let yourself find that when using the air conditioner according to the invention no risk of icing of an evaporator of the primary circuit given is. It should be noted that by integrating such a described device in an air conditioning also no circulation damaging oil recirculation occurs.

The disclosed features of the air conditioner according to the invention and the method according to the invention are natural to achieve further advantages and properties can be combined with each other as desired.

The above and other objects, features, aspects and advantages The present invention will become apparent to those skilled in the art from the following detailed description, which in conjunction with the enclosed figures preferred embodiments of the present invention Invention disclosed, however, as purely exemplary and not restrictive should be understood.

It demonstrate:

1 a cross section of a preferred embodiment of the device 500 the air conditioning system of the invention 1000 with integrated Laval nozzle 13 ;

2 a cross-section of another preferred embodiment of the device 500 the air conditioning system of the invention 1000 with integrated Laval nozzle 13 and integrated diffuser 14 ;

3 a cross-section of another preferred embodiment of the device 500 the air conditioning system of the invention 1000 with integrated Laval nozzle 13 and integrated diffuser 14 ;

4 a cross-section of another preferred embodiment of the device 500 the air conditioning system of the invention 1000 with integrated Laval nozzle 13 and integrated diffuser 14 ;

5 an embodiment of the air conditioner according to the invention 1000 in a schematic representation, wherein the Nutzkreislauf 300 a Latentkältespeicherkreislauf a stationary air conditioning system with a Latentkältespeicher 31 is;

6 a further embodiment of the air conditioner according to the invention 1000 in a schematic representation, wherein the Nutzkreislauf 300 a Latentkältespeicherkreislauf a stationary air conditioning system with a Latentkältespeicher 31 is.

1 With reference to the US Pat 5 or 6 made schematic representation of an embodiment of the air conditioner according to the invention 1000 an advantageous embodiment of the device 500 to the fluid mechanical linkage of the first air conditioning circuit, ie the primary circuit 100 with the second air conditioning circuit, ie the secondary circuit 200 ,

Shown is therefore a line or pipe union 500 , on which, inter alia, a first circulation medium-carrying line 111 of the primary circuit 100 and a second circulation medium-carrying line 221 of the secondary circuit 200 connected. In the facility 500 thus becomes the flowing circulation medium 11 of the primary circuit 100 which is in the first line 111 flows, with the flowing circulation medium 22 of the secondary circuit 200 which is in the second line 221 flows, to a common stream 1122 combined or mixed. The by the meeting or the mixing of the flowing circulation media 11 and 22 resulting common electricity 1122 , which in turn, in turn, on the corresponding lines of the primary circuit 100 and the secondary circuit 200 divides, flows in the case of the primary and the secondary circuit 100 . 200 common line 121 (Main) after the output 12 from the pipe or pipe union 500 ,

The pipe or pipe union 500 is advantageous from circular in cross-section lines 111 . 221 . 121 designed accordingly and has a first input 1 , a second entrance 2 and a (common) output 12 on. The of the flow of the circulation medium 11 of the primary circuit 100 flowed through cross section of the first input 1 is advantageous parallel to the cross-sectional plane of the common output 12 , in which the circulation streams or circulation media 11 . 22 of the primary circuit 100 and the secondary circuit run 200 united, arranged.

The of the flow of the circulation medium 22 of the secondary circuit 200 perfused cross section of the second input 2 In the embodiment shown, the position of the cross-sectional plane of the first input 1 , which from the circulation medium 11 of the primary circuit 100 is passed through, an angle of 90 °. The management association 500 is thus executed in T-shape. Of course, here would be another value or range for the angle, preferably in the range of 60 ° to 120 ° and the associated position of the second input 2 or the resulting flow vector of the circulation flow 22 in the second entrance 2 to the first entrance 1 conceivable.

The inner diameter of the first input 1 is smaller in the embodiment shown than the inner diameter of the second input 2 , which has the consequence that also the flow cross sections, ie the cross sections through which the circulation media 11 . 22 flow through, are accordingly. Preferably, the inner diameter of the first input 1 or the first circulation medium-carrying line 111 in the range of 12 mm to 14 mm and the inner diameter of the second input 2 or the second circulation medium-carrying line 222 in the range of 14 mm to 16 mm. This is accompanied by a significant change in the state, ie the physical or thermodynamic characteristics of the in the second line 221 flowing circulation medium 22 of the secondary circuit 200 connected, which, for example, the speed of the flowing circulation medium 22 of the secondary circuit 200 reduced. The further effects on the flowing circulation media and thus on the operation of the air conditioner according to the invention 1000 with to the secondary circuit 200 couplable useful cycle 300 will be described below using the 5 respectively. 6 explained or described in more detail.

Furthermore, the pipe or pipe union 500 to improve the operation and a concomitant increase in the efficiency of the operation of the air conditioning system according to the invention 1000 with coupled useful cycle 300 an integrated nozzle structure in the form of a Laval nozzle 13 with a continuous circular cross section. The with the integration of the Laval nozzle 13 in the pipe or pipe union 500 The resulting effects and benefits on operation are, as already mentioned, based on the 5 respectively. 6 explained and presented. The Laval nozzle 13 is downstream of the first circulation medium-carrying line 111 after the first entrance 1 in the area of joint management 121 integrated. As from the in 1 illustrated embodiment of the device 500 can be taken, is the Laval nozzle 13 this advantageous integral part of the first circulation medium-carrying line 111 ,

Starting from the inside diameter of the first input 1 takes downstream, ie from the first input 1 starting in the direction of the common exit 12 the inner diameter of the conduit to form the portion of the Laval nozzle 13 in a steady process to a minimum and then back to something. The flow of the circulation medium 11 of the primary circuit 100 is thus accelerated downstream in the area or in the nozzle and thus reaches a higher speed than when entering the first input 1 the pipe or pipe union 500 ,

The structure of the Laval nozzle 13 extends advantageously over the area of a recess 20 for that in the governing body 500 over the second entrance 2 inflowing circulation medium 22 and ends downstream only shortly after the area of the recess 20 for the second entrance 2 , The corresponding operation of the air conditioner according to the invention with such executed device 500 concomitant suction effect of the flowing circulation medium 11 of the primary circuit 100 on the flowing circulation medium 22 of the secondary circuit 200 optimizes this clearly, which, as already indicated several times above, based on a system view, based on the 5 respectively. 6 , also described and illustrated in more detail.

From the common exit 12 the pipe or pipe union 500 T-shaped figure is now that with the circulation medium 11 of the primary circuit 100 combined or mixed circulating medium 22 of the secondary circuit 200 preferably in the intake of a compression device 3 (See. 5 or 6 ) of the air conditioner of the invention 1000 with couplable useful cycle 300 ,

With regard to flow or circulation-promoting boundary conditions of the management association 500 and thus optimum operation of the air conditioning system according to the invention 1000 with couplable useful cycle 300 are at the in 1 shown embodiment of the device 500 the connecting ends of the to the common line 121 in the area of the corresponding recess provided for this purpose 20 connected second line 221 advantageously rounded. Both the first line 111 as well as the second line 221 are in the embodiment shown the device or line union 500 advantageous cohesively connected to each other. This is above all the required tightness of the line union 500 guaranteed. Likewise, such executed Wiring Association can be made quickly and easily.

Likewise, a continuous integral construction of the pipe or pipe union would be 500 in the field of connection of the current of the circulation medium 11 of the primary circuit 100 with the flow of the circulation medium 22 of the secondary circuit 200 conceivable, in which the respective transitions of the pipes or connecting devices are configured geometrically corresponding.

The illustrated embodiment of the device 500 as line or pipe union T-shaped figure shows the device 500 as a separate, independent component of the cycle of the air conditioner according to the invention 1000 couplable useful cycle 300 , Likewise, conceivable or obvious, the device 500 as an integral part of the housing of a compression device, ie for example a compressor 3 execute, in which case for the first line 111 and the second line 221 corresponding connection devices on the housing of the compressor 3 to be provided.

In 2 is the cross section of another embodiment of the device 500 the air conditioning system of the invention 1000 with couplable useful cycle 300 shown. In this case, this embodiment substantially corresponds to that exemplary embodiment of the device 500 , which is already in or based on 1 has been shown and described in detail. In addition, however, the in 2 shown embodiment of the device 500 the air conditioning system of the invention 1000 with couplable useful cycle 300 in front of the exit 12 the (joint) line 121 a section or area in which the line 121 as a diffuser structure 14 is trained. The diffuser structure 14 is located advantageously in the direction of the flowing circulation media 11 . 22 or of the flowing circulation medium 1122 downstream. The internal diameter of the cone-shaped diffuser 14 increases continuously and steadily, ie without jumps to the diameter, which at the exit 12 the governing body 500 present, on. This inner diameter is advantageous up to a compression device 3 (See. 5 ). The angle between the inner surfaces and the longitudinal axis of the diffuser, ie the cone angle of the preferably rotationally symmetric diffuser 14 is advantageously in the range of 2 ° to 15 °, more preferably in the range of 3 ° to 8 °.

The diffuser 14 has in the context of existing here or usual prevailing flow conditions of the circulation medium (subsonic flow) to a nozzle reverse effect, which is characterized by the cross-sectional enlargement or cross-sectional widening of the flow space, the velocity of the circulating medium flowing through the diffuser 1122 decreases and thus the kinetic energy, for example represented by the dynamic pressure, decreases and the pressure (static pressure) increases. Because the delay of the flow of the circulation medium 1122 by such a change in cross section results in a pressure increase, this phenomenon, for example, has an advantageous effect on the output 12 such a body or association 500 downstream compression device 3 (See. 5 or 6 ), according to which the required power for the compression device 3 , ie the compressor is lower for operation. With regard to the operation of an air conditioning system according to the invention which will be explained below 1000 thus optimizes the integration of a diffuser structure 14 at the appropriate point of the cycle this. This is the governing body 500 advantageously designed so that the mass flow of the circulation medium 1122 in the range of 50 kg / h to 250 kg / h. It should be noted that here both the line 121 or the diffuser structure 14 as well as the first line 111 or the nozzle structure 13 and the second line preferably can be made easily by tube forming.

In 3 is another embodiment of the device 500 the air conditioning system of the invention 1000 with couplable useful cycle 300 shown in cross section. The management association 500 points, as in the already using the 1 and or 2 shown embodiments, a substantially T-shaped configuration or a T-shaped structure. With regard to effect essential components nozzle structure or Laval nozzle 13 and diffuser structure or diffuser 14 are manufactured separately as individual parts. This makes it possible, above all, to realize a simple and cost-effective production process, for example by extrusion or injection molding, especially if these are made of plastics such as polypropylene (PP), polyamide (PA), polyphthalamide (PPA) or polyphenylene sulfide (PPS).

The line connection 500 in the exemplary embodiment shown, preferably consists of a solid, cuboid basic body 58 and one regarding the Laval nozzle 13 or the first circulation medium-carrying line 111 Clamping device or a clamping body 59 with corresponding recess or contact surface for the Laval nozzle 13 and the first circulation medium-carrying line 111 , About a correspondingly provided recess or bore on the body 58 the governing body 500 is the Laval nozzle structure 13 used or integrated on the base body. About a correspondingly provided recess or Bore at the Laval nozzle 13 is part of the first line 111 in the Laval nozzle 13 integrated. The first line 111 points at the in 5 shown embodiment advantageously after the first input 1 and in front of the Laval nozzle structure 13 downstream, by, for example, a forming or pressing process appropriately trained, circumferential paragraph or a correspondingly formed, circumferential edge, which on one side as a contact element or contact surface for a portion of the Laval nozzle 13 and on the other side as a contact element or contact surface for a region of the clamping body 59 serves. About a corresponding means for connecting the clamp body 59 with the main body 58 the device 500 becomes the Laval nozzle 13 and the first line 111 with the main body 58 pressed or positively connected. In the embodiment shown here, the means for connecting as a bore with internal thread on the body 58 , as a bore on the clamp body 59 and as a screw 61 executed. Likewise, other means for connecting the clamp body would be 59 or the Laval nozzle 13 and the first line 111 conceivable with the main body.

To a required tightness of the device or the line union 500 to ensure is between a section of the bore surface of the main body 58 for the male Laval nozzle section 13 and a portion of the outer structural surface of the Laval nozzle 13 at least one O-ring 60 installed or pressed. Furthermore, there is at least one other O-ring 60 between a section of the bore surface of the Laval nozzle 13 and a portion of the outer surface of the portion of the first conduit 111 , Of course, in this case also other means for sealing such as sealing paste are conceivable.

The diffuser structure 14 is in the in 3 shown embodiment of the device 500 the air conditioning system of the invention 1000 with couplable useful cycle 300 in a section of the common line 121 in front of the exit 12 the governing body 500 integrated or compressed advantageous frictionally with this. The common management 121 as well as the line 221 of the second input 2 is advantageous with the main body 58 the line connection 500 pressed, particularly advantageous in terms of tightness but cohesively welded. Alternatively, it would be a connection of corresponding circulation medium-carrying lines 111 . 221 . 121 also with the help of flange, for example, realized. A significant advantage that results from such an embodiment is the assembly, ie the assembly of the line connection 500 and due to their shape easy to manufacture individual components such as the Laval nozzle 13 or the diffuser insert or diffuser 14 ,

In 4 is a cross-sectional view of another embodiment of the device 500 the air conditioning system of the invention 1000 with couplable useful cycle 300 shown. The first circulation medium-carrying line 111 preferably the primary circuit 100 extends to the exit 12 the governing body 500 and points at the exit 12 a, for example, caused by a forming process, circumferential edge. The Laval nozzle 13 and the diffuser 14 are here again advantageously manufactured as separate items and in a corresponding cross-section widened portion of the first line 111 , as already described, integrated or installed. Determining the distance between the nozzle structure 13 and the diffuser structure 14 this serves at least one spacer 18 , This spacer 18 includes in the area of the recess 20 for that in the line connection 500 over the second entrance 2 entering circulatory medium 22 as well as a corresponding recess, so that a coincidence or mixing of the streams of the circulation media 11 . 22 of the primary circuit 100 and the secondary circuit 200 can take place. During assembly, therefore, the Laval nozzle 13 , the spacer 18 as well as the structure of the diffuser 14 over the exit 12 into the governing body 500 introduced. With the already described, facilitated simplified assembly is therefore also given a quick replacement of these components.

Furthermore, here is the area of the second input 2 or the second input 2 advantageously designed as a drawn sleeve or drawn pipe section. This is a simple and fast connection for the circulation medium-carrying line 221 of the secondary circuit 200 to the line connection 500 of the secondary circuit 200 given. The end portion of the second conduit 221 this requires only the pipe section of the second input during assembly 2 be slipped before the second line by means of a welding or soldering, for example, advantageously cohesively with the line union 500 connected is.

Furthermore, the first line 111 at its downstream end at the exit 12 over the circumferential edge by means of a flange connection 70 with the line 121 connected. The flange connection 70 consists advantageously of two interconnected partial bodies, which for the lines 111 . 121 each have corresponding recesses or holes. The connection of the partial body of the flange connection 70 takes place, as in the embodiment in 5 shown, advantageously means at least one threaded screw connection. Alternatively, it would be here on the connection of the two body parts by means of terminals or other facilities conceivable.

The (common) line 121 is at its upstream lying, ie to the device 500 turned end portion designed accordingly, with a circumferential edge for attachment or connection to the first line 111 or the flange connection 70 and a circumferential groove for receiving or integrating at least one O-ring 60 is intended for sealing. The administration 121 which advantageously the flow of the circulating medium 1122 to one for the primary circuit 100 and the secondary circuit 200 common compressor device 3 (See. 5 or 6 ), is up to the stop of the peripheral edge at the peripheral edge of the first line 111 at the exit 12 the governing body 500 in the first circulation medium-carrying line 111 introduced.

In 5 is an embodiment of the air conditioner according to the invention 1000 with couplable useful cycle 300 shown in schematic representation, wherein the Nutzkreislauf 300 a Latentkältespeicherkreislauf a stationary air conditioning system with a Latentkältespeicher 31 is. The air conditioner has, as already repeatedly referred to, a standard air conditioning circuit, ie a primary circuit 100 on, which with another second circuit, the secondary circuit 200 fluidmechanisch regard to the circulating or circulating circulation medium on the one hand via the distribution device, ie line branching 400 and the institution, ie management association 500 is linked in parallel. Furthermore, a Latentkältespeicherkreislauf 300 given, which thermally, ie in heat exchanging relationship with the secondary circuit 200 is coupled.

The primary circuit 100 includes in the illustrated embodiment, the air conditioner 1000 with stationary air conditioning, the essential components, namely one in the form of a compressor 3 for the primary circuit 100 as well as for the secondary circuit 200 acting compression device for compressing and pumping the circulating or working medium, a, with regard to the working medium as a condenser 4 , ie, condenser working heat exchanger device, a control device in the form of a solenoid valve 15 , an expansion organ, advantageously in the form of a throttle 16 and one with respect to the circulatory medium 11 of the primary circuit 100 as an evaporator 17 acting heat exchanger device. The above-mentioned, most important components of Pri märkreislaufs 100 Of course, for example, a collecting organ (in 5 not shown), which is usually carried out in the form of a liquid container with filter and advantageously between capacitor 4 and solenoid valve 3 can be added.

The secondary circuit 200 is a respect to the evaporator 17 of the primary circuit 100 and the heat exchanger means, ie the evaporator 27 of the secondary circuit 200 parallel to the primary circuit 100 linked or operable second circuit of the air conditioner according to the invention 1000 , The secondary circuit 200 points in the in 5 shown embodiment according to the primary circuit 100 a solenoid valve 25 , an expansion organ, ie a throttle 26 , an evaporator 27 , As well as a device for one-sided flow passage in the form of a check valve 28 on. The check valve 28 it locks the passage of the circulation medium in a flow direction (upstream) advantageous automatically. As shown, the secondary circuit 200 flows through a part of the circulation or working medium. The for the primary circuit 100 essential, circulation medium-carrying line is with 111 and those for the secondary circuit 200 essential, circulation medium-carrying line with 221 characterized.

The parallel connection or fluid mechanical coupling of the secondary circuit 200 to the primary circuit 100 takes place on the one hand via a, between the capacitor 4 and the solenoid valve 15 of the primary circuit 100 correspondingly provided distributor device 400 for dividing the flow of the circulating fluid of the conduit 121 , as well as on the other hand about the institution or management association 500 for (re) uniting the flow of the circulating medium 11 the line 111 of the primary circuit 100 with the flow of the circulation medium 22 the line 221 of the secondary circuit 200 which is between the evaporator 27 or the check valve 28 of the secondary circuit 200 and the compressor 3 or which is between the evaporator 17 of the primary circuit 100 and the compressor 3 located. The management association 500 is thus advantageous in the intake of the primary circuit 100 as well as for the secondary circuit 200 common compressor 3 arranged. Here is the line 221 of the secondary circuit 200 with the second entrance 2 and the line 111 of the primary circuit 100 with the first entrance 1 the governing body 500 connected.

Furthermore, as already mentioned, a closed latent cold storage cycle independent of the circulating medium is provided 300 shown which over the evaporator 27 of the secondary circuit 200 thermally to the secondary circuit 200 is coupled. The latent cold storage cycle 300 has one for the circulation of a circulation medium of Latentkältespeicherkreislaufs 300 provided pumping device 32 , a cooling heat exchanger 33 and a latent cold storage device 30 on. The evaporator 27 of the secondary circuit 200 is advantageous in the Latentkältespeichereinrichtung 30 integrated. Furthermore, the latent cold storage device comprises 30 a heat exchanger 37 the latent cold storage cycle 300 and a latent cold storage 31 the latent cold storage cycle 300 ,

For single operation of the primary circuit 100 the air conditioning with stationary air conditioning 1000 , Which is provided for standard cooling of a vehicle interior and only possible when the drive unit or internal combustion engine is running, is therefore given a conventional air conditioning system according to a known procedure. The solenoid valve 15 of the primary circuit 100 is open and the solenoid valve 25 of the secondary circuit 200 closed. Accordingly, only the primary circuit 100 with the one from the compressor 3 flowed through driven circulation medium.

To an air conditioning of the vehicle interior overnight, ie while sleeping, for example, to claim or perceive, and without having to run through the drive unit or the internal combustion engine and thus to take the disadvantages already mentioned in the purchase, is the over the secondary circuit 200 coupled latent cold storage cycle 300 required. The operation of the primary circuit 100 is not possible due to the switched-off internal combustion engine, thus the primary circuit is not available for cooling the vehicle interior.

This is now the latent cold storage 31 stored cold over the circulating medium of Latentkältespeicherkreislaufs 300 by means of the pumping device 32 , the heat exchanger 37 the latent cold storage device 30 and the cooling heat exchanger 33 the latent cold storage cycle 300 delivered to the vehicle interior and thus the Latentkältespeicher 31 dissipated.

However, the latent cold storage 31 unloaded, ie to withdraw or use the stored therein refrigeration for cooling, this must first while the engine is running, for example, during driving on the parallel operation of the secondary circuit 200 next to the primary circuit 100 or the compressor 3 be charged by means of appropriate mechanisms and methods shown below.

The charge of latent cold storage 31 takes place, as for the operation of the primary circuit 100 described with the help of existing from known and usual components secondary circuit 200 according to a known method, wherein one with regard to the liquid and under low pressure, in the evaporator 27 entering circulating medium 22 taking place evaporation process in the evaporator 27 of the secondary circuit 200 is used to extract not intended for the vehicle interior air for cooling heat, but in the Latentkältespeicher 31 extract heat and charge it thus.

The cooling capacity for the vehicle interior during operation of the internal combustion engine using the primary circuit 100 is, as with conventional air conditioners without stationary air conditioning usually on the temperature of the entering into the vehicle interior air, which via the evaporator 17 of the primary circuit 100 was governed or regulated. In terms of efficiency of the system or process and its maintenance, the goal here is the evaporator 17 only slightly above the icing limit, ie operate icing temperature. Accordingly, it is usually worked with evaporation temperatures of -4 ° C to -2 ° C, so that the desired, so-called outlet temperature of the evaporator 17 of the primary circuit 100 has corresponding values.

The charging process of the latent cold storage 31 can now by the integration of such a device already described 500 for uniting the primary circuit 100 and the secondary circuit 200 in the form of flowing circulating media 11 . 22 of the primary circuit 100 and the secondary circuit 200 parallel and continuous to the operation of the primary circuit 100 happen. Here is the device 500 , such as in 1 shown and already described, between the evaporator 27 or the check valve 28 of the secondary circuit 200 and the compressor 3 or between the evaporator 17 of the primary circuit 100 and the compressor 3 arranged. For a desired vehicle air conditioning with the aid of the operation of the primary circuit 100 as well as simultaneous charging of the latent cold storage 31 the latent cold storage device 30 the latent cold cycle 300 using the secondary circuit 200 are therefore the solenoid valves 15 and 25 open.

For example, referring to the example embodiment in FIG 1 the device 500 has shown that of the circulating medium 22 of the secondary circuit 200 flowed through the second entrance 2 the device 500 a larger cross section than that of the circulating medium 11 of the primary circuit 100 flowed through the first entrance 1 the device 500 , This is accompanied by a change in the fluidic or thermodynamic state of the after leaving the evaporator 27 in vaporous form of low pressure present circulation medium 22 of the secondary circuit 200 connected, to that effect, that both the circulatory medium 22 of the secondary circuit 200 characteristic characteristic of the static pressure as well as the dynamic pressure, ie the back pressure is lower than in the circulation medium 11 of the primary circuit 100 ,

Due to a thereby given, lower pressure difference (usually 0.2 bar to 1 bar lower) between the intake of the compressor 3 and the evaporator 27 of the secondary circuit 200 as the pressure difference between the suction area of the compressor 3 and the evaporator 17 of the primary circuit 100 , is thus one over the secondary cycle 200 realized, continuous charging process of the latent cold storage 31 given at the same time to the operation of the primary circuit 100 can happen without the evaporator 17 of the primary circuit 100 freeze through freezing condensation.

The circulatory medium 22 of the secondary circuit 200 owns by using the device 500 for parallel connection of the primary circuit 100 with the secondary circuit 200 thus by a corresponding influence a lower temperature than the circulation medium 11 of the primary circuit 100 , That for the charging process of Latentkältespeichers 31 important evaporation temperature level of the evaporator 27 is therefore below the evaporation temperature of the evaporator 17 of the primary circuit 100 , preferably by 2 ° C to 10 ° C below, and thus in a usual range of -4 ° C to -12 ° C.

The charging process of the latent cold storage 31 the latent cold storage device 30 requires an ever-decreasing evaporator temperature for optimal operation in terms of duration. Accompanying this, in the sense of an even lower, ie colder reachable evaporator temperature of the evaporator 27 of the secondary circuit 200 is in the embodiments of the device 500 which in the 1 to 4 are shown, a Laval nozzle 13 with respect to the circulation medium 11 integrated accordingly, which in addition to correspondingly more favorable cross-sectional conditions a the circulation medium 11 of the primary circuit 100 after leaving the Laval nozzle 13 downstream with respect to the circulating medium 22 of the secondary circuit 200 absorbing property gives. This results in a substantially maintaining the already lower static pressure levels of the circulation medium 22 of the secondary circuit 200 the dynamic pressure and thus the speed of especially from the evaporator 27 discharged circulating medium 22 of the secondary circuit 200 increased, which summarized as even more favorable for the removal of heat from the Latentkältespeicher 31 over the heat exchanger 27 of the secondary circuit 200 proves. The evaporation temperature of the evaporator 27 of the secondary circuit 200 can thus be further reduced by this measure. Accompanying this is consequently a more rapid charging of the latent cold storage 31 the latent cold storage device 30 the latent cold storage cycle 300 connected, whose duration advantageously does not exceed a value of 2.5h, even if, as already described, parallel to the primary circuit 100 is operated.

Another, the operation and performance of the air conditioning system according to the invention 1000 with couplable useful cycle 300 or especially the evaporator 27 of the secondary circuit 200 increasing aspect, which is already based on the embodiments of the device 500 in the 2 to 4 illustrated, advantageous integration of a diffuser structure 14 in the flow direction of the flowing circulation medium 1122 into the institution or management association 500 ,

The from the streams of the circulation medium 11 of the primary circuit 100 and the circulation medium 22 of the secondary circuit 200 current resulting from combining or mixing 1122 will be within the facility 500 in the area of the diffuser structure 14 exposed to a constantly expanded cross-section. Above all, there is a decrease in the kinetic energy, ie the flow velocity and an increase in the static pressure. Because the electricity 1122 the circulation medium after leaving the diffuser 14 or the output 12 the governing body 500 directly in the suction area of the compressor 3 is with the through the diffuser 14 caused, changed flow condition of the circulation medium given a further optimization of the operation, so on the one hand, the one for the compressor 3 required drive power can be lower or is. On the other hand, however, there is also a further reduction in the evaporation temperature of the evaporator 27 of the secondary circuit 200 due to lower pressure in line 221 thus increasing the thermal efficiency.

In 6 is another embodiment of the erfindungemäßen air conditioning 1000 shown in the form of a schematic representation, wherein the Nutzkreislauf 300 a Latentkältespeicherkreislauf a stationary air conditioning system with a Latentkältespeicher 31 is. The air conditioner 1000 which are essentially based on the 5 shown, has in the embodiment shown here via a further component 34 which is advantageously designed as a liquid container with filter. The liquid container 34 is preferably between the capacitor 4 and the distribution device 400 arranged. Furthermore, in addition to the institution or management association 500 a bypass line tung 80 for the circulation medium 11 of the primary circuit 100 with an adjusting device 81 between the intake region of the compression device, ie the compressor 1 and the area in front of the first entrance 1 the governing body 500 arranged. The adjusting device 81 is advantageously designed as a solenoid valve. Likewise, the adjusting device 81 Also be designed as a differential pressure valve. The mode of operation in the embodiment of the air conditioner according to the invention shown here 1000 corresponds in principle to that, as based on the embodiment in 5 in the essential points illustrated operation, ie during the charging process of Latentkältespeichers 31 over the heat exchanger or evaporator 27 of the secondary circuit 200 is the adjusting device 81 closed, ie there is no circulation medium 11 of the primary circuit 100 through the bypass line 80 ,

With described or existing bypass line 80 with integrated adjusting device 81 However, the possibility exists, the primary circuit 100 operate exclusively with maximum performance, since then to the adjusting device 81 is open and the circle running medium 11 of the primary circuit 100 not about the governing body 500 to the compression device, ie to the compressor 3 but directly over the bypass line 80 to the compressor 3 can flow. It should be noted that for such operation of the air conditioning system according to the invention 1000 the solenoid valve 25 of the secondary circuit 200 is closed, ie no circulation medium 22 through the secondary circuit 200 flows. Alternatively, as already mentioned, the flow through the bypass line 80 with circulation medium 11 be made dependent on an applied pressure. In this case, then, the adjusting device 81 perform as a differential pressure valve, wherein the pressure difference between the input and the output of the pressure difference valve 81 is kept constant. Preferably, the pressure difference is in the range of 0.2 bar to 0.8 bar.

It should be noted that the charging process of an empty, ie thermal energy latent cold storage 31 over the secondary circuit 200 in view of the risk of icing of the evaporator 17 of the primary circuit 100 with parallel operated primary circuit 100 is not critical, since the charging process of Latentkältespeichers 31 at an evaporation temperature level of the evaporator 27 of the secondary circuit 200 which happens to that of the evaporator 17 of the primary circuit 100 equivalent. Furthermore, it is preferable to use the refrigerant R134a as the circulation medium.

Further advantages of the air conditioning system according to the invention 1000 with couplable useful cycle 300 are next to the continuously operable circuits 100 and 200 thus no resulting unwanted noise.

In summary, it can be stated that such a described or proposed, inventive air conditioning 1000 works efficiently, is robust and enables a long service life, ie a long product life cycle.

Claims (32)

Air conditioning ( 1000 ), in particular for a vehicle, having a primary circuit ( 100 ) and a parallel connected secondary circuit ( 200 ), as well as with at least one to the secondary circuit ( 200 ) couplable use cycle ( 300 ), at least one device ( 500 ) with at least two inputs ( 1 . 2 ) and an output ( 12 ) for the fluid-mechanical connection of the primary circuit ( 100 ) with the secondary circuit ( 200 ), in which a circulating medium (FIG. 11 ) is exposed there to other geometric boundary conditions, as another, there flowing in circulation medium ( 22 ), such that the one circulation medium ( 11 ) the static pressure of the other circulation medium ( 22 ) before the circulation media meet. Air conditioning ( 1000 ) according to claim 1, wherein the dynamic pressure of the other circulating medium ( 22 ) elevated. Air conditioning ( 1000 ) according to claim 1 or 2, wherein the device ( 500 ) in the intake area of a primary circuit ( 100 ) and the secondary circuit ( 200 ) common compression device ( 3 ) is located. Air conditioning ( 1000 ) according to one of the preceding claims, wherein the secondary circuit ( 200 ) with the second input ( 2 ) of the institution ( 500 ) and from the other circulation medium ( 22 ) is flowed through. Air conditioning ( 1000 ) according to one of the preceding claims, wherein the use cycle ( 300 ) a stationary air conditioning system with Latentkältespeichereinrichtung ( 31 ). Air conditioning ( 1000 ) according to any one of the preceding claims, wherein the device ( 500 ) is designed as a tubular conduit combination in a substantially T-shaped configuration. Air conditioning ( 1000 ) according to claim 6, wherein the position of the cross-sectional plane of the first input ( 1 ) with the position of the cross-sectional plane of the second input ( 2 ) forms an angle which is in the range of 60 ° to 120 °, but preferably 90 ° be wearing. Air conditioning ( 1000 ) according to claim 6 or 7, wherein the tubular conduit union ( 500 ) has circular cross sections. Air conditioning ( 1000 ) according to claim 8, wherein the inner diameter of the second input ( 2 ) is greater than the inner diameter of the first input ( 1 ). Air conditioning ( 1000 ) according to claim 8 or 9, wherein the inner diameter of the first input ( 1 ) is in the range of 12 mm to 14 mm and the inner diameter of the second input ( 2 ) is in the range of 14 mm to 16 mm. Air conditioning ( 1000 ) according to any one of the preceding claims, wherein the device ( 500 ) after the first entrance ( 1 ) a nozzle structure ( 13 ). Air conditioning ( 1000 ) according to claim 11, wherein the nozzle structure ( 13 ) is formed substantially in the form of a Laval nozzle. Air conditioning ( 1000 ) according to claim 11 or 12, wherein the nozzle structure ( 13 ) at least across the width of a recess ( 20 ) for the second input ( 2 ). Air conditioning ( 1000 ) according to any one of the preceding claims, wherein the device ( 500 ) in front of the exit ( 12 ) a diffuser structure ( 14 ). Air conditioning ( 1000 ) according to claim 14, wherein the cone angle ( 140 ) of the diffuser structure ( 14 ) to the longitudinal axis of the diffuser structure ( 14 ) is in the range of 2 ° to 15 °, preferably in the range of 3 ° to 8 °. Air conditioning ( 1000 ) according to claim 14 or 15, wherein the nozzle structure ( 13 ) and / or the diffuser structure ( 14 ) are manufactured by an extrusion process / is. Air conditioning ( 1000 ) according to one of claims 14 to 16, wherein the second input ( 2 ) is formed as a drawn connection sleeve. Air conditioning ( 1000 ) according to one of claims 14 to 17, wherein the nozzle structure ( 13 ) after the first entrance ( 1 ) is arranged in a cross-section widened portion. Air conditioning ( 1000 ) according to one of claims 14 to 18, wherein at least on a part of the surface of the nozzle structure ( 13 ) at least one O-ring ( 60 ) is located. Air conditioning ( 1000 ) according to one of claims 14 to 19, wherein the nozzle structure ( 13 ) and the diffuser structure ( 14 ) are manufactured as separate components, wherein between the nozzle structure ( 13 ) and the diffuser structure ( 14 ) at least one spacer ( 18 ) is located. Air conditioning ( 1000 ) according to one of claims 14 to 19, wherein the nozzle structure ( 13 ) with the line of the first input ( 111 ) via a clamping device ( 58 . 59 ) with the device ( 500 ) and the lines ( 221 . 121 ) to the second entrance ( 2 ) and to the exit ( 12 ) cohesively with the device ( 500 ) are connected. Air conditioning ( 1000 ) according to one of claims 14 to 21, wherein the nozzle structure ( 13 ) and / or diffuser structure ( 14 ) over the exit ( 12 ) into the institution ( 500 ) can / can be introduced. Air conditioning ( 1000 ) according to claim 22, wherein the diffuser structure ( 14 ) by frictional engagement with the output ( 12 ), in that the output ( 12 ) has a conical shape. Air conditioning ( 1000 ) according to one of claims 14 to 23, wherein the mass flow of the circulating medium through the diffuser structure ( 14 ) in the range of 50 kg / h to 200 kg / h, wherein the mass flow ratio

between the primary circuit ( 100 ) and the secondary circuit ( 200 ) is in the range of 0.4 to 0.8. Air conditioning ( 1000 ) according to one of claims 3 to 24, wherein in addition to the device ( 500 ) a bypass line ( 80 ) with an adjusting device ( 81 ) between the intake area of the compression device ( 3 ) and the area in front of the first entrance ( 1 ) of the institution ( 500 ) is provided. Air conditioning ( 1000 ) according to claim 25, wherein the adjusting device ( 81 ) is designed as a solenoid valve. Air conditioning ( 1000 ) according to claim 25, wherein the adjusting device ( 81 ) is designed as a differential pressure valve. Air conditioning ( 1000 ) according to one of the preceding claims, wherein the pressure difference between the output ( 12 ) and the second input ( 2 ) of the other circulation medium ( 22 ) in the range from 0.2 bar to 1 bar is smaller than between the outlet ( 12 ) and the first entrance ( 1 ) of a circulating medium ( 11 ). Air conditioning ( 1000 ) according to any one of the preceding claims, wherein the device ( 500 ) is made of plastic, preferably of polypropylene (PP), polyamide (PA), polyphthalamide (PPA) or polyphenylene sulfide (PPS). Air conditioning ( 1000 ) according to any one of the preceding claims, wherein the device ( 500 ) as an integral part of the connection region of a compression device ( 3 ) is executed. Method for operating an air conditioning system ( 1000 ), in particular for a vehicle, having a primary circuit ( 100 ) and a parallel connected secondary circuit ( 200 ), as well as with at least one to the secondary circuit ( 200 ) couplable use cycle ( 300 ), wherein the fluid-mechanical linkage of the primary circuit ( 100 ) with the secondary circuit ( 200 ) at least one institution ( 500 ) with at least two inputs ( 1 . 2 ) and an output ( 12 ), in which a circulating medium (FIG. 11 ) is exposed there to other geometric boundary conditions, as another, there flowing in circulation medium ( 22 ), whereby through the one circulation medium ( 11 ) the static pressure of the other circulation medium ( 22 ) is reduced before the circulation media meet. Method for operating an air conditioning system ( 1000 ) according to claim 31, wherein the dynamic pressure of the other circulating medium ( 22 ) is increased.