supporter course.

[0001] a refrigerated container carrying supporter course The present invention relates to a trailer with a reefer container carrying and a motorcar, wherein the refrigerated container and the refrigerated container of the trailer are cooled via a compression-type refrigerator utilizes engine car of the.

[0002] The compression-type refrigerating machine is the most common style is constitute of the refrigerating machine. This design takes advantage of the physical effect of the heat of vaporisation from liquid to gaseous form when changing the state of aggregation. A refrigerant, the is moved in a closed circuit, undergoes changes of state of aggregation successively different. The gaseous refrigerant is first compressed by a compressor (compressed). Condensed (liquefied) (Condenser) In the following heat exchanger it with release of heat. The liquid refrigerant is expanded due to the change in pressure across a choke patterns are projected, e.g. an expansion valve or a capillary tube,. In downstream second heat exchanger (evaporator) the refrigerant evaporated under heat absorption at low temperature (evaporative cooling). The circuit can now begin from the front. The process must by supplying mechanical work from the outside (driving power) via the compressor are kept in motion. The refrigerant at a low temperature level and it gives a thermal output takes on at a higher temperature level to the environment while supplying technical work from.

[0003] The refrigerant circuit, as a rule, consists of the four components compressor, condenser, throttle device and evaporator. In the single-stage refrigeration system are distinguished [...] low pressure side. The from the pressure side of the compressor until the throttle element ranges high pressure side. The low-pressure side behind the throttling until compressor entrance comprises the refrigeration cycle.

[0004] In the following representation of the invention is understood under the term "liquefier" the combination of compressor and condenser.

[0005] In supporter coursescooltainers State of the kind known with the from the point, independent of each other and separated from each other on the two refrigerated container refrigeration appliances. State of the type known, at the from the as well as the trailer supporter courses both the Motordriven vehicle equipped with a condenser and an evaporator respectively. Both the refrigerated container of the cooling circuits independent of each other and thus present engine car and the refrigerated container on the trailer.

[0006] The compressors of the respective refrigerating machine need electric current. This is generated through the motor of the truck or via separate small diesel engines for example.

[0007] supporter courses State of the type known from the The disadvantage of the is, in particular that the mutually separate refrigeration machines are very costly. Furthermore, this separate refrigerating machines is highly energy consumption.

[0008] The present invention is based on the problem, to make available a supporter course with cooltainers , which overcomes the disadvantages of said supporter courses from the State of the kind.

[0009] supporter course This problem is solved by an of the aforementioned type, which thereby is characterized that for the cooling of both refrigerated container a single condenser and at least two, are provided respectively in said cooltainers arranged evaporator, wherein the liquefier with said at least two evaporators via coolant lines, which comprise at least one suction line and at least one pressure line, are connected. The above can be also fixedly arranged container as both exchange container refrigerated container.

[0010] a is much cheaper cooling of both refrigerated container possible supporter course the invented With, since on a liquefier is dispensed with completely. Through the coolant lines, with the aid of coolant also can be passed from the trailer or from the trailer to the motorcar Motordriven vehicle for, both refrigerated container can be cooled with a condenser.

[0011] according to the invention a preferred embodiment of the is the liquefier at the Motordriven vehicle supporter course For disposed. Through this arrangement the liquefier can, in particular the compressor and the fan of the condenser, also then be supplied with current from the motor of the engine car is uncoupled from the trailer when the motorcar. The liquefier Is disposed on the trailer, such a power supply is not possible after a decoupling.

[0012] the invention is in the coolant lines supporter course an especially preferred embodiment of the in each case a quick connector for fast, loss of coolant-free separation or. Compound of coolant lines in uncoupling or. The trailer coupling from the or provided on the Motordriven vehicle. The said quick couplings usually include two coupling parts, the can be screwed together. After the [...] of the two coupling halves and the associated caps of the lines is guaranteed in these quick couplings that both cooling agent line ends are tight and any leakage of coolant is avoided. Such quick couplings are known from the state of the type for other uses. An example of such a quick connector is described for example in DE 60 2005,000,300 T2. Advantageously the quick couplings are in the region of the coupling between Motordriven vehicle and trailer (= Trailer coupling) arranged. A particularly advantageous operation is of the quick couplings possible in this area.

[0013] Advantageously at least partially the coolant lines are, preferably only in the region of the coupling between Motordriven vehicle and flexible design supporter course. This preferred form the coolant lines these to the, constantly taking place in the region of the coupling between optimal Customize Motordriven vehicle and trailer rotational movements. Preferably, beyond the coupling between the sections are rigidly formed supporter course Motordriven vehicle and, since the cost of a rigid form enables simple assembly and reduced coolant lines.

[0014] according to the invention, the coolant lines In one preferred embodiment, a flexible portion on the supporter course , at whose ends are adjacent, rigid sections, wherein the quick couplings are arranged between said flexible portion and a rigid portion preferably. The said flexible portion is preferably arranged in the region of the coupling between Motordriven vehicle and supporter course. By said assembly of the flexible portion of the coolant pipe is in connection with the arrangement of the quick couplings a particularly advantageous adjustment of the coolant lines to rotational movements in the region of the clutch and of the quick couplings between Motordriven vehicle and supporter course possible. Without said combination of flexible portion of the coolant lines, as well as of the quick couplings would be an adaptation to the rotary movements of said elements only high technical expense possible supporter course in the range between and Motordriven vehicle.

[0015] In another particularly preferred embodiment of the according to the invention is the flexible portion of the coolant lines are each a stainless steel- [...]supporter course , comprising preferably a cold insulating. It has proven itself that the insert is particularly suitable as a flexible portion of the coolant lines of a stainless steel- [...] , since such a stainless steel- [...] also at -60 °C is elastic. [...] has the necessary flexibility to also said, in the region between the rotational movements in order to compensate for the coolant lines and Trailer Motordriven vehicle. Such a flexibility in said range is also important, since in the coolant lines pressures of up to 60 bar at a temperature up to -60 °C be able to dominate in the suction line.

[0016] Other features of the invention are disclosed in the following description of preferred embodiments of the invention in conjunction with the drawings and the dependent claims. Here separately or in combination with one another the individual features can be realized.

[0017] In the drawings show:

Fig. 1:a supporter course in the uncoupled state the invention;

Fig. 2:1 in the coupled state the supporter course of Fig. according to the invention;

Fig. 3:an enlarged sector from Fig. cooling agent hoses 1 in the region of the quick couplings of the;

Fig. 4:2 in the region of the quick couplings the cooling agent hoses an enlarged sector from Fig.;

Fig. 5:a supporter course from the State of the type.

[0018] 1 and 2 show the invention with a 1 supporter course Fig. The Motordriven vehicle and a trailer 2 a 3 2 4. also carries the trailer reefer container. The Motordriven vehicle carries 4 and 5 5 3 a refrigerated container 6 are cooled by a compression-type refrigerating machine. The refrigerated container. The REFRIGERATOR 6 comprises a single condenser 7, which is located at the 2 Motordriven vehicle. 8a and 8b 6 comprises further two evaporator refrigerator The, 4 and 5 are disposed apart from each other in the two cooltainers. The vaporizer 8a via the cooling duct 7 is connected with the condenser 9. The vaporizer 8b via the cooling duct 7 is connected with the condenser 10. In each case two lines 9 and 10 comprise coolant lines The, in other words a pressure line and a suction line. The sow lines lead cold refrigerant and this lead to the evaporator. The pressure lines lead warm fluid against it.

[0019] 10 coolant line The, comprising 12 and the pressure line 11 the suction line, the coolant line connects with the trailer 10 2 3. By Motordriven vehicle a refrigerant circuit between the condenser and the evaporator is 5 made cooltainer 8b of the 7. With 7 7 a refrigeration cycle is established between the condenser and the same condenser the evaporator 8a of the 4 cooltainer. 8a and 8b to supply both evaporators To, the liquefier 7 has a power of approximately 24,000 watts on (for application of cold treatment).

[0020] the coolant line 11 and in the pressure line 10 in the suction line 12 is in the region of the clutch 2 and the trailer 13 (Trailer coupling) between the 14 or 15 in each case a quick coupling 3 Motordriven vehicle disposed. A flexible line section 14 or 15 respectively closes to this quick couplings in the form of a 16 or 17 to stainless steel- [...]. The areas before and after the coolant line 16 or 17 the stainless steel- [...] 10 (or respectively of the suction line 11 and the pressure line 12) are of rigid construction. With the reference symbol 18 denotes the coolant line 10 before the flexible region is the rigid portion. The reference marks 19 denotes the rigid region of the flexible region against it. The 19 runs directly on the drawbar 20 of the trailer, for example, rigid region supporter course 3 of the 1.

[0021] 3 and 4 is particularly advantageous in the flexible portion of the coolant line Fig. 10, 11 and 12 the pressure line comprising the suction line, represented. Needless intake rangecover also the rigid portion 21 and a rigid pressure pipe range 22 18 a rigid. with the flexible region 21 of the suction line 11 is rigid region The 16 (Edelstahl-Flexrohr) of the suction line 14 connected via the quick coupling 11. The rigid region 12 is 22 12 17 (Edelstahl-Flexrohr) of the pressure line with the pressure line via the flexible region 15verbunden the quick coupling. The 14 and 15 comprise in each case two quick couplings, 14a and 14b or 15a and 15 b can be screwed together, coupling elements with each other. 14a and 14b or 15a and coupled state the coupling elements are In 15b screwed together. In this state refrigerant can flow through the quick connector. 14a and 14b or 15a form in the uncoupled state and the clutch elements against it or 15b closures. Seals, which prevent flows that coolant (= refrigerant) from the free ends of the flexible ducts includes 16 and 17 during decoupling resulting 21 and 22 or respectively of the rigid ducts.

[0022] 3 and 4 is in the 13 for reasons Fig. trailer hitch The the About only indicated schematically. In this area are the lines between the trailer hitch 2 and the trailer 13 3 strong rotational movements exposed to the Motordriven vehicle. This 16 and 17 (Edelstahl-Flexrohre) in said suction line by the flexible areas can rotary movements 11 or the pressure line 12 ideally be compensated for. By the use of stainless steel- [...] 60 bar are also in the range of pressures and temperatures of up to -60 °C in the suction line in this particularly delicate area without problems are tolerable. 14 and 15 is also a decoupling of the quick couplings By 2 and 3 without problems and in particular without loss of coolant possible Motordriven vehicle trailer.

[0023] 11 (liquid; inner diameter = 25 mm) operating data for the suction line:

Operating pressures: 35 bar

-Burst pressure: 60 bar

-Temperature: to -60 °C

[0024] 12 (hot gas; inner diameter = 10 mm) for the pressure line operating data

Operating pressures: 35 bar

-Burst pressure: 60 bar

-Temperature: to + 60 °C

[0025] 5 shows a supporter course Fig. State of the type 100 from the. This 101 102 100 has two separate refrigerating machines and supporter course on. 101a or 101 and 102 each include a liquefier 102a Both refrigerating machine and an evaporator 102 b 101b or. When supporter course 100 are quite separate refrigeration circuits provided two (a refrigeration cycle and a refrigeration cycle in the trailer in the Motordriven vehicle).