WO2017076453A1

WO2017076453A1 - Transport refrigerating facility and method for producing a transport refrigerating facility

Info

Publication number: WO2017076453A1
Application number: PCT/EP2015/075827
Authority: WO
Inventors: Hubert WILD; Andreas Becker; Tobias FUHRER; Rami RANTA-AHO; Riku Öysti; Kai SCHUPPLER; Jouni Saarnia
Original assignee: Bitzer Kühlmaschinenbau Gmbh
Priority date: 2015-11-05
Filing date: 2015-11-05
Publication date: 2017-05-11

Abstract

The invention relates to a transport refrigerating facility, especially for refrigerating vehicles, comprising a drive machine (84), an electric motor/generator unit (82) and a refrigerant circuit which, in turn, comprises at least one refrigerant compressor (62), a heat-emitting heat exchanger (42), an expansion unit (72) and a heat-absorbing heat exchanger (32). The aim of the invention is to improve said transport refrigerating facility such that it can be easily produced and can undergo the required pressure resistance and tightness tests in a simple, especially time-saving manner. To this end, at least the heat-emitting heat exchanger (42), the expansion unit (72) and the heat-absorbing heat exchanger (32) are arranged in a functionally assembled manner in a first facility module (52), at least the drive machine (84) is arranged in a second facility module (54), and the transport refrigerating facility is made up of facility modules (52, 54).

Description

TRANSPORT COOLING SYSTEM AND METHOD FOR PRODUCING ONE

TRANSPORT REFRIGERATION SYSTEM

The invention relates to a transport refrigeration system, in particular for refrigerated vehicles / refrigerated containers, comprising a prime mover, an electric motor / generator unit and a refrigerant circuit, which in turn comprises at least the following components: a refrigerant compressor, a downstream in the refrigerant circuit to the refrigerant compressor heat-emitting heat exchanger, one in the refrigerant circuit on the heat-emitting heat exchanger following expansion unit and a heat-absorbing heat exchanger following the expansion unit.

Such transport refrigeration systems are known from the prior art.

In the transport refrigeration systems, in particular in many cases the heat-emitting heat exchanger is a condenser and the heat-absorbing heat exchanger is an evaporator.

The transport refrigeration systems are designed so that they are either autonomously operated by means of the prime mover, the drive machine, the energy for driving the refrigerant compressor and / or to drive the

Motor / generator unit as a generator for supplying the electrical

powered components, or are operable by an electrical power supply, in which case the prime mover is not used, but the motor / generator unit as a motor for driving the

Refrigerant compressor works.

Under a prime mover is any kind of internal combustion engine, any type of gas engine, any type of driven by a vehicle engine hydraulic motor or any kind of a gas-powered Dearman engine to understand. In the production of such transport refrigeration systems, the components of the refrigerant circuit must always be tested for pressure resistance and tightness in order to prevent the escape of refrigerant.

Such a pressure resistance and leakage test is associated with a certain risk potential and with a great deal of time if the entire, ready-assembled transport refrigeration system is to be checked.

The invention is therefore based on the object to improve a transport refrigeration system of the type described above such that this simple

produced while the necessary pressure resistance and tightness tests in a simple manner, in particular time-saving, can be subjected.

This object is achieved in a transport refrigeration system of the type described above according to the invention, that in a first system module at least the heat-emitting heat exchanger, the expansion unit and the heat-absorbing heat exchanger are arranged operatively assembled, that in a second system module at least the

Drive machine is arranged and that the transport refrigeration system is composed of the system modules.

The advantage of the solution according to the invention lies in the fact that a unit is created by the functional assembly of the heat-emitting heat exchanger, the expansion unit and the heat-absorbing heat exchanger in the first plant module, which can be tested easily and independently of the prime mover on compressive strength and tightness and thus a much more efficient production of the transport refrigeration system allowed. Besides, there is no need for the exams of the first one

Plant module on compressive strength and tightness on the drive machine to take into account, as this particular only allows some complex testing procedures.

Another advantage is that the structure of the first plant module with respect to the stability and rigidity of the construction may be different and thus a weight saving is possible.

For example, the construction of the first plant module is less rigid and stable than that of the second plant module.

In addition, the presence of the two plant modules also improves the ease of repair and maintenance, as may be removed for maintenance or repair of one of the modules.

With regard to the arrangement of the refrigerant compressor in this context, no further details have been made.

Thus, an advantageous solution provides that the refrigerant compressor is arranged in the first system module.

Thus there is also the possibility of the pressure resistance and leakage test of the refrigerant compressor in the installed in the first system module state.

It is particularly advantageous if all components of the refrigerant circuit are arranged operatively assembled in the first plant module. This solution makes it possible to fully assemble the refrigerant circuit in the first system module and thus one in itself

to have closed functional unit available, which can be easily subjected to a Druckfestig keits- and leak test.

Alternatively, it is also possible that the refrigerant compressor is arranged in the second system module.

This solution has the advantage that it allows the entire drive components for the refrigerant compressor in the second system module can be assembled as a functional unit.

It has proven to be particularly advantageous if all components of the refrigerant circuit with the exception of the refrigerant compressor are arranged operatively assembled in the first plant module.

In this solution, there is also still the advantage to check all components of the refrigerant circuit except for the refrigerant compressor in terms of pressure resistance and tightness and then to connect to the refrigerant compressor, when an assembly of the two system modules takes place.

This is possible insofar as the refrigerant compressor itself already in turn keits- and leak test is subjected to a Druckfestig, so that ultimately only the connection of two already independently tested for compressive strength and tightness units must be done when assembling the two system modules, namely only the integration of Refrigerant compressor in the already functional

assembled refrigerant circuit. With regard to the motor / generator unit, no further details have been given in connection with the previous statements on the refrigeration system according to the invention.

Thus, in principle, the motor / generator unit can be constructed from a separate motor and a separate generator.

In this case, it is conceivable, for example, when the refrigerant compressor is arranged in the first system module, to arrange the electric motor for driving the refrigerant compressor in the first system module and to arrange the generator together with the drive machine in the second system module, so that during assembly of the

Plant modules only to establish the electrical connection between the electric motor and the electric generator.

For reasons of weight saving, however, it has proved to be particularly advantageous if the motor / generator unit comprises a single electric machine which can be operated either as a motor or as a generator.

It is even more advantageous when the refrigerant compressor and the electric motor / generator unit are integrated in a housing and thus form a coherent integrated unit.

With regard to the assignment of the motor / generator unit to the respective system module have also been in connection with the previous

Embodiments no further details.

Thus, an advantageous solution provides that the motor / generator unit is arranged in the first system module.

Another equally advantageous solution provides that the

Motor / generator unit is arranged in the second system module. Such an arrangement of the entire motor / generator unit in the first system module or the second system module is particularly advantageous when the motor / generator unit comprises only a single electric machine.

With regard to the arrangement of the system modules relative to each other no further details have been made in connection with the previous explanation of the individual embodiments.

Thus, an advantageous solution that the system modules in the

Transport refrigeration system in a direction transverse to the vehicle longitudinal direction of the refrigerated vehicle or to the longitudinal direction of the box body or container

extending transverse direction are arranged side by side.

In particular, it is provided in this case that the system modules are arranged side by side in the transverse direction on a front side of the box body or a container.

An advantageous solution provides that the system modules in

horizontal direction are arranged side by side, this is in particular an advantageous solution for box bodies of towing vehicles.

Another advantageous solution provides that the system modules in

vertical direction are arranged side by side, this is

in particular an advantageous solution for box bodies of trailers or semi-trailers or containers.

With regard to further components for the operation of the refrigerant circuit, no further details have so far been given. Thus, an advantageous solution that the heat-emitting heat exchanger is associated with a blower unit, which ensures in particular that this is supplied in all operating conditions, a sufficient amount of air to dissipate the heat.

In particular, it is advantageous if this blower unit is arranged in the first system module in the flow path of the air flow to the heat-emitting heat exchanger and thus functionally associated with the heat-emitting heat exchanger and can be mounted together with this.

A drive of such a blower unit would in principle be possible by means of a mechanical drive on the part of the drive machine or of the electric motor for the refrigerant compressor.

However, it is particularly expedient if the blower unit is driven by its own electric motor, since then a connection between its own electric motor of this blower unit and the generator or an external power source can be produced in a simple manner.

In particular, in this case, the fan unit is independent of speed of a prime mover operable.

Furthermore, a blower unit is preferably also associated with the heat-absorbing heat exchanger.

Also in this blower unit, it is advantageous if it is arranged in the first system module in the flow path of the flow of the medium from or to the heat-absorbing heat exchanger and thus can be mounted in functional relationship with this heat-absorbing heat exchanger. Also in this blower unit, it has proven to be advantageous if it is driven by its own electric motor, as well as a connection with either the generator or an external power source can be produced in a simple manner.

A further advantageous solution provides that the heat-absorbing heat exchanger is associated with a heating unit.

Such a heating unit serves either to defrost the heat-absorbing heat exchanger from time to time or to heat the current passing through the heat-absorbing heat exchanger of a medium for more accurate temperature control.

In particular, it is provided that the heat-absorbing heat exchanger and optionally the heating unit are penetrated by a stream of gaseous medium, which is provided in a volume to be cooled, and formed by circulation of this medium in this volume to be cooled.

In particular, the flow of the medium is generated and maintained by the blower unit associated with the heat-absorbing heat exchanger.

In the case of a heating unit, it has therefore proved to be particularly advantageous if the heating unit is arranged in the first system module and thus functional in a simple manner to the heat-absorbing heat exchanger

assigned.

In addition, a control of the transport refrigeration system is also provided according to the invention. This control of the transport refrigeration system could be arranged in each of the plant modules.

A particularly advantageous solution provides, however, that the control of the transport refrigeration system is arranged in the first system module and thus in particular can already be connected during assembly with the individual components of the refrigerant circuit in the first system module.

In addition, provides an advantageous solution that for cooling the drive machine, a blower unit is provided.

This fan unit is advantageously arranged in the second system module for cooling the drive machine.

Also in this fan unit, it has proven to be advantageous if it is provided with its own electric motor, so that they can be easily controlled by the controller.

With regard to the structure of the plant modules, no information has been provided so far.

So it has proven to be advantageous if the first system module has a support structure module, which is a mounting base for the

Components of the first system module forms.

This makes it possible to adapt this support structure module with regard to its stability and rigidity to the installed components and use, for example, lightweight structures and lightweight materials such as light metal. Furthermore, it is advantageous if the second system module has a carrier structure module which forms a mounting base for the components of the second system module.

Thus, with this support structure module, it is possible to construct it with the necessary stability and rigidity for receiving the drive machine and the gear unit for driving the motor / generator unit and / or the refrigerant compressor, for example made of steel.

The object mentioned at the outset is moreover achieved by a method for producing a transport refrigeration system, in particular for refrigerated vehicles, comprising a drive machine, an electric motor / generator unit and a refrigerant circuit which, in turn, at least the following

Components comprising: a refrigerant compressor, a following in the refrigerant circuit to the refrigerant compressor heat-dissipating heat exchanger, a following in the refrigerant circuit to the heat-emitting heat exchanger expansion unit and a following on the expansion unit heat-absorbing heat exchanger, according to the invention in a first system module at least the heat-emitting heat exchanger, the expansion unit and the heat-absorbing heat exchangers assembled functioning and then tested for compressive strength and tightness, at least the prime mover is installed in a second system module and then the transport refrigeration system is composed of the two system modules.

In particular, the test of the compressive strength can be carried out particularly efficiently if the first module in a pressure test chamber is tested for compressive strength.

Furthermore, it has proven to be particularly advantageous in the test of tightness when the first system module is tested for leaks in a vacuum chamber, since such a test can be carried out with little expenditure of time. In particular, in this type of test, the advantages according to the invention of the structure in the form of the two system modules, since the presence of the drive machine would not allow a test in the vacuum chamber.

The tightness test can be carried out particularly efficiently if the first system module is tested for leaks with helium filled into the assembled components of the refrigeration circuit and a helium detection device arranged in vacuum for the helium that escaped into the vacuum.

With regard to the installation of the refrigerant compressor, no further details are given.

An advantageous solution provides that the refrigerant compressor is installed in the first system module, so that it can be tested in the test for compressive strength and tightness with.

It is particularly advantageous if all components of the refrigerant circuit are functionally installed in the first system module and then tested for compressive strength and tightness.

Alternatively, another solution provides that the refrigerant compressor is installed in the second plant module.

This solution has the advantage that all components to be driven by the drive machine can be preassembled together in the system module before assembly takes place with the first system module. In particular, it is advantageous in this solution if all the components of the refrigerant circuit with the exception of the refrigerant compressor are functionally installed in the first plant module and tested for compressive strength and tightness.

The motor / generator unit could be constructed of a motor and a separate generator.

Particularly favorable, however, is a solution in which the

Motor / generator unit comprises a single electric machine, which is operated either as a motor or as a generator.

A suitable variant provides that the motor / generator unit is installed in the first system module.

Alternatively, another expedient variant provides that the

Motor / generator unit is installed in the second system module.

For attachment to a refrigerated vehicle, it is advantageous if in the transport refrigeration system, the system modules in a direction transverse to the vehicle longitudinal direction of the refrigerated vehicle or to the longitudinal direction of the box body or container

extending transverse direction can be assembled side by side to the transport refrigeration system, so that the assembled system modules can be functionally mounted on a box body or container, in particular on a front side of the same.

For example, this is done so that the plant modules are assembled side by side in the horizontal direction.

An alternative solution is that the system modules are assembled side by side in the vertical direction. To optimize the heat dissipation is provided in particular that the heat-emitting heat exchanger is assigned a blower unit.

In this case, it is advantageous if the blower unit is installed in the first system module.

Furthermore, it is expedient for a reliable cooling of the refrigerated goods when the heat-absorbing heat exchanger is associated with a blower unit.

This blower unit is installed in particular in the first system module.

Further advantages for the function of the transport refrigeration system arise when the heat-absorbing heat exchanger is assigned a heating unit.

In this case, the heating unit is expediently installed in the first system module.

For the installation of a controller, it has proved to be advantageous if the control of the transport refrigeration system is installed in the first system module.

In order to operate the prime mover optimally in all possible operating states, it is provided that a fan unit for cooling the prime mover is installed in the second system module.

Further features and advantages of the invention are the subject of the following description and the drawings of some

Embodiments. In the drawing show:

1 is a side view with cut-open cooling structure of a towing vehicle.

Fig. 2 is an enlarged longitudinal section through a first embodiment of a transport refrigeration system, in particular suitable for the cooling structure of FIG. 1 along line 2-2 in FIG. 3;

Fig. 3 is a plan view of the transport refrigeration system shown in FIG. 2 in

Direction of the arrow A in Fig. 2;

4 shows a plan view similar to FIG. 3 of the two separate system modules after their pre-assembly and before assembly of the system modules according to the first embodiment, shown in FIG. 2 and 3;

Fig. 5 is an illustration of a second embodiment of a

Transport refrigeration system;

Fig. 6 is an illustration of a third embodiment of a

transport refrigeration system according to the invention;

7 shows a longitudinal section through a vehicle trailer with a cooling structure similar to FIG. 1;

Fig. 8 is an enlarged section along line 2-2 in Fig. 9 by a fourth

Embodiment of a transport refrigeration system, in particular suitable for refrigerated bodies of vehicle trailers;

9 shows a plan view in the direction of the arrow B on the fourth embodiment of the transport refrigeration system according to FIG. 8; Fig. 10 is a view similar to Fig. 9 of two separate, separate

assembled support structure modules prior to their assembly to the transport refrigeration system according to the fourth embodiment, shown in Figures 8 and 9;

11 is a view similar to FIG. 10 of a fifth embodiment of a transport refrigeration system according to the invention;

FIG. 12 is a view similar to FIG. 10 of a sixth embodiment of a transport refrigeration system according to the invention and

13 is a view similar to FIG. 10 of a seventh embodiment of a transport refrigeration system according to the invention.

An in Fig. 1 illustrated embodiment of a towing vehicle 10 with a cooling structure 12 for the transport of refrigerated goods 14 includes a thermally insulated box body 16, in its interior 18, the refrigerated goods 14th

arranged and cooled by a circulating medium 22, preferably cooled air.

For cooling the medium 22, a transport refrigeration system 30 designed for towing vehicles 10 is arranged on the box body 16, preferably on an end face 24 thereof, which, as shown schematically in FIG. 1, a heat-absorbing heat exchanger 32, which is flowed through by a stream 34 of the medium 22 and thus is able to cool the medium 22 in the stream 34.

To maintain the flow 34 through the heat-absorbing

Heat exchanger 32 is preferably arranged in the transport refrigeration system 30, a blower unit 36, which sucks, for example, the heat-absorbing heat exchanger 22 flowing through medium 22 and blown back into the interior 18 of the box body 16, preferably a roof-side current 38 from the cooled

Medium 22 is generated while the entering into the heat-absorbing heat exchanger 32 stream 34 is formed from the bottom side of the box body 16 collecting medium 22.

Furthermore, the transport refrigeration system 30 comprises a heat-emitting

Heat exchanger 42, which is preferably exposed to an occurring when driving the tractor 10 airstream and thus by an air flow 44, primarily due to the wind, interspersed.

To maintain the air flow 44, for example when the tractor 10 is stationary, the heat-emitting heat exchanger 42 is also associated with a blower unit 46.

As shown in FIG. 2, 3 and 4 in detail, the first comprises

Embodiment of the transport refrigeration system 30 according to the invention a generally designated 50 support structure for the individual components, said support structure 50 is formed of two support structure modules 51 and 53, each receiving different components of the transport refrigeration system 30 and together with the respective components two prefabricated system modules 52 and 54 result that are assembled to the transport refrigeration system 30.

The individual components of the transport refrigeration system 30 are, in particular, a refrigerant compressor 62, which compresses refrigerant and delivers it to a high-pressure connection 64 to a high-pressure line 66 which supplies this high-pressure refrigerant, which has been heated during the compression process, to the heat-emitting heat exchanger 42, which, as already described, is replaced by a high-pressure line 66 Air flow 44 is flowed through for cooling the same. From the exothermic heat exchanger 42, a refrigerant line 68 for the cooled still high-pressure refrigerant leads to an expansion unit 72 which precedes the heat-receiving heat exchanger 32 and expands the high-pressure refrigerant and supplies it to the heat-absorbing heat exchanger 32 so as to be cooled by expansion Refrigerant in the heat-absorbing heat exchanger 32 is able to absorb heat.

From the heat-absorbing heat exchanger 32, the expanded refrigerant is then supplied by means of a low-pressure line 76 to a low-pressure port 74 of the refrigerant compressor 62.

In this context, the terms high pressure and low pressure merely mean that the pressure at high pressure is higher than at low pressure, but have no significance for the respective absolute value of the pressure at high pressure and at low pressure, which must be selected according to the refrigerant used.

Thus, the refrigerant compressor 62, the high-pressure port 64, the high-pressure line 66, the heat-exiting heat exchanger 42, the refrigerant line 68, the expansion unit 72, the heat-absorbing heat exchanger 32, the low-pressure line 76, and the low-pressure port 74 collectively form the components of a self-contained refrigerant circuit 80.

This refrigerant circuit 80, for example, by other components, such as collectors, Sauggasunterkühler etc. to supplement as needed.

To drive the refrigerant compressor 62, the transport refrigeration system 30 according to the invention preferably comprises an electrical

Motor / generator unit 82 and a prime mover 84, which allow a drive of the refrigerant compressor 62 under various conditions. If, for example, the transport refrigeration system 30 is to be operated autonomously, then the refrigerant compressor 62 is driven by means of the drive machine 84, which at the same time also drives the motor / generator unit 82, which in this case acts as a generator and generates electrical energy for operating a wide variety of units ,

For example, the electrical energy generated by the motor / generator unit 82 in this case is used to operate the blower units 36 and 46 and to operate an external cooling blower unit 86 to drive the engine 84 and / or the refrigerant compressor 62 and to operate an electrical or electronic controller 88 of FIG entire transport refrigeration system 30, which controls, for example, the blower units 36, 46 and 86 and also controls the drive machine 84 and / or the refrigerant compressor 62.

In order to adjust the temperature of the item to be cooled even more accurately, the heat-absorbing heat exchanger 32 is optionally associated with an electrical heating unit 102 which can be used, for example, for heating the stream 34 of the medium 32 or optionally also for defrosting the heat-absorbing heat exchanger 32.

In the first embodiment of the transport refrigeration system 30 according to the invention, the drive machine 84 drives the refrigerant compressor 62 via a transmission unit 104, for example a belt transmission, which is integrated together with the motor / generator unit 82 into a housing 106 and coupled directly to the refrigerant compressor 62.

Since all components of the refrigerant circuit 80 are to be subjected to a pressure resistance test according to predetermined test cycles, the first exemplary embodiment of the refrigeration system according to the invention according to FIG. 4 before, that all components of the refrigerant circuit 80 are associated with and mounted on the support structure module 51, so that the refrigerant circuit 80 can be manufactured and assembled in self-contained manner.

Thus, in the first embodiment, since the electric motor / generator unit 82 is integrated with the refrigerant compressor 62 in the common housing 106, the electric motor / generator unit 82 is also mounted on the support structure module 51.

This allows the entire refrigerant circuit 80 with all

Assemble components and additionally the motor / generator unit 82 to the support structure module 51 to form the first plant module 52 and submit as a unit of the pressure resistance test and the leak test, and for example, use a test process to which the engine 84 can not be subjected.

For pressure resistance testing, the entire system module 52 is arranged in a pressure test chamber DK.

A leak test provides, for example, that the entire refrigerant circuit 80 is filled with helium as the medium and all components mounted on the support structure module 51 are transferred to a vacuum chamber VK and tested there with helium spectrometer HS for helium escaping into the vacuum.

The support structure module 51 is then adapted in terms of stability and rigidity to the components mounted therein and is designed for example as a lightweight construction of lightweight materials, in particular light metal. Furthermore, the prime mover 84 in the support structure module 53 together with the gear unit 104 and the blower unit 86 can be preassembled to the second plant module 54 so that in the overall assembly of the support structure 50, the two plant modules 52 and 54 need only be connected to each other with the components pre-assembled therein to get the finished transport refrigeration system 30, wherein one more

Connection between the transmission unit 104 and the refrigerant compressor 62 is required and still the connections between the mounted on the system module 52 controller 88 and the prime mover 84 and the blower unit 86 must be made.

In this case, in the first exemplary embodiment, the system module 54 is designed such that it has a receiving space 108 in which the housing 106 can be arranged, which accommodates the refrigerant compressor 62 and the motor / generator unit 82, so that additional connections between the carrier structure module may be necessary 53 or

Components thereof and the housing 106 can be made to provide in later operation, the housing 106 with the refrigerant compressor 62 and the motor / generator unit 82 with the necessary for their operation installation measures.

The support structure module 53 is adapted to the loads by the prime mover 84 and made stiffer and sturdier than the support structure module 51 to receive the loads from the prime mover 84 and the gear unit 104 and made of steel, for example.

In particular, it is provided in the transport refrigeration system 30 according to the invention that, as shown in FIG. 4, the plant modules 52 and 54 are assembled in a direction transverse to the direction of travel of the tractor 10 extending transverse direction 56 adjacent to the support structure 50, wherein, in particular, the support structure modules 51 and 53 when assembled to the support structure 50 by means of facing each other and in turn transverse to the transverse direction 112 extending side portions 114 and 116 are connected to the support structure 50 of the transport refrigeration system 30.

In a second embodiment, shown in Fig. 5, all those components which are identical to those of the first embodiment, provided with the same reference numerals, so that with respect to the description of the same fully incorporated by reference to the comments on the first embodiment.

In contrast to the first embodiment is in the second

Embodiment, the support structure module 51 'of the first system module 52' is formed so that it also receives the housing 106, in which the refrigerant compressor 62 and the motor / generator unit 82nd

are included.

Thus, the support structure module 51 'and the support structure module 53' in their mutually facing areas of the support structure modules 51, 53 different shape, resulting in the assembly thereof, a support structure having a support structure 50 similar or identical outer contour.

This means that in this case when assembling the system module 52 'with the system module 54' a drive connection to the refrigerant compressor 62 must be performed in the system module 52 'and thus the transmission unit 104 from the system module 54' hineinstrecken into the system module 52 'in order to drive the refrigerant compressor 62 together with the motor / generator unit 82. Furthermore, in the same way as in the first embodiment, the connection between the controller 88 and the engine 84 and the blower unit 86 is still to be established.

Incidentally, in the second embodiment of the transport refrigeration system, those elements which are identical to those of the preceding embodiment and in particular those of the transport refrigeration system 30, provided with the same reference numerals, so that with respect

Description of the individual components in full on the comments on these transport refrigeration systems reference can be made.

In a third embodiment of a transport refrigeration system according to the invention, shown in FIG. 6, all the components of the refrigerant circuit 80 are mounted in the system module 52 "except for the refrigerant compressor 62; only the connection between an end piece 124 of the high-pressure line 66 with the high-pressure tap 64 and an end piece 134 of the low-pressure line 76 with the low-pressure connection 74 is missing.

These end pieces 124 and 134 are closed for pressure resistance testing and for leak testing, so that all components of the refrigerant circuit 80, except for the refrigerant compressor 62, can be subjected to the pressure-tightness test and the tightness test.

Since the refrigerant compressor 62 with the Hochdruckanschususs 64 and the low pressure port 74 in turn pressure resistance tested and tightness-tested, a subsequent connection of the end pieces 124 and 134 with the Hochdruckanschiuss 64 and 74 is easily possible, provided that all other components of the refrigerant circuit 80 through the pressure resistance test and the leak test to have.

Thus, in the third embodiment, the housing 106 with the refrigerant compressor 62 and the motor / generator unit 82 is arranged in the plant module 54 ", resulting in the advantage that it can be used with the Mounting the components of the system module 54 "is possible to completely assemble the gear unit 104 and in particular to connect to the refrigerant compressor 62 and the engine 84 final and also to test this connection.

In the third embodiment, the support structures 51 "and 53" are preferably formed identical to the support structures 51 and 53 of the first embodiment.

However, the transport refrigeration system according to the invention can be used not only in the towing vehicle 10, but also in a trailer 150, which also has a box body 16 ', in the interior 18' the refrigerated goods 14 is arranged and by the medium 22, for example, air is cooled , Wherein provided for trailer transport refrigeration system 230 is also preferably disposed on the end face 24 'of the case 16'.

In the same way as in the transport refrigeration system 30, cooling of the flow 34 of the medium 22 takes place in that this heat

receiving heat exchanger 32 flows through and thus from this thus the cooled stream 34 for cooling the refrigerated goods exits and spreads as a roof-side stream 38 between the case 16 '.

Furthermore, cooling of the heat-emitting heat exchanger 42 of the transport refrigeration system 30 takes place through the air flow 44.

Incidentally, in the third embodiment of the transport refrigeration system those elements which are identical to those of the preceding embodiments and in particular with those of the transport refrigeration system 30, provided with the same reference numerals, so that with respect to the description of the individual components in full on the comments on these

Transport refrigeration systems can be referenced. As shown in FIGS. 8, 9 and 10, the refrigeration cycle 80 in the transport refrigeration system 230, which represents a fourth embodiment of a transport refrigeration system according to the invention, the same components as in the transport refrigeration system 30, so that in this respect the contents of the statements for transport refrigeration system 30 reference can be.

Further, the support structure 250 also includes a support structure module 251 and a support structure module 253 in a direction transverse to the direction of travel

extending transverse direction 256 in contrast to the transport refrigeration system 30 are not horizontally adjacent to each other but vertically stacked, wherein in the support structure module 251, in which all

Components of the refrigerant circuit including the refrigerant compressor 62 are installed, arranged in the direction of gravity above the support structure module 253, which receives the prime mover 84 and a part of the transmission unit 104.

Also in this fourth exemplary embodiment of the transport refrigeration system, the refrigerant compressor 62 and the motor / generator unit 82 are mounted in the first system module 252 analogously to the first exemplary embodiment of the transport refrigeration system 30, so that the entire refrigerant circuit 80 with all components in the first system module 252 are prefabricated in a functional manner can.

In contrast, in the second system module 254, only the drive machine 84 and the gear unit 104, at least in parts, pre-assembled.

Furthermore, the system modules 252 and 254 are connected to each other by means of mutually facing side parts 114, 116 to form the transport refrigeration system 230. When connecting the two system modules 252 and 254 is in the same manner as in the first embodiment of the transport refrigeration system 30 additionally a connection between the controller 88 and the

Drive machine 84 and between the gear unit 104 and the

Refrigerant compressor 62 produce.

Incidentally, in the fourth embodiment of the transport refrigeration system 230, those elements which are identical to those of the above embodiments and in particular those of the transport refrigeration system 30 are provided with the same reference numerals, so that in terms of

In a fifth embodiment of the transport refrigeration system 230, shown in FIG. 11, the plant module 252 'is formed so that it still has a frame 262 for stably receiving the housing 106 with the refrigerant compressor 62 and the motor / generator unit 82 and the plant module 254' is complementary thereto formed, wherein a

additional frame 264 for receiving the blower unit 286 for cooling the drive machine 84 is used.

In this case, therefore, the opposing side parts 114 'and 116' of the support structure modules 251 'and 253' are stepped, but still so that over these two side parts 114 'and 116' a

Connection of the plant modules 252 'and 254' to form the support structure 250 'takes place, which has a similar or identical to the support structure 250 outer contour. Incidentally, in the fifth embodiment of the transport refrigeration system 230, those elements which are identical to those of the above embodiments and in particular those of the transport refrigeration system 30 are provided with the same reference numerals, so that with respect to

In a sixth embodiment of the transport refrigeration system shown in FIG. 12, the refrigerant compressor 62 is mounted in the plant module 252 "while the prime mover 84 and the motor / generator unit 82 are mounted in the plant module 254" including at least a portion of the transmission unit 104.

In this embodiment, the refrigerant compressor 62 and the motor / generator unit 82 are not integrated in a common housing, but both are arranged separately, and in particular, the

Motor / generator unit 82 driven by the prime mover 84 via a gear 262 and the motor / generator unit 82 in turn drives the gear unit 104 to drive the refrigerant compressor 62 at.

In this case, the transmission 262 is designed as a clutch transmission, so that either the possibility exists with the drive machine 84 the

Motor / generator unit 82 via the clutch gear 262 to drive and then turn by means of the motor / generator unit 82 the

To drive refrigerant compressor 62, wherein the motor / generator unit 82 operates in this case as a generator unit.

Alternatively, by means of the clutch transmission 262, it is possible to decouple the motor / generator unit 82 from the drive machine 84 and to drive the refrigerant compressor 62 with the motor / generator unit 82, in this case operated via a network-fed electric motor unit via the transmission unit 104. In this embodiment, the support structure modules 251 "and 253" differ from those of the fourth embodiment in size, but their assembly to the support structure 250 "gives an outer contour similar to that of the support structure 250.

Thus, when assembling the support structure 250 ", there is only a need to couple the refrigerant compressor 62 to the transmission unit 104 and the controller 88 to the motor / generator unit 82, the

Clutch transmission 262 and the prime mover 84 to couple.

In the sixth embodiment of the transport refrigeration system is also the possibility instead of the transmission unit 106 by means of

Motor / generator unit 82 an additionally provided in the refrigerant compressor 62 electric motor to drive, so that an electric

Coupling between in this case only as a generator unit

operated motor / generator unit 82 and provided with its own electric motor refrigerant compressor 62 is possible.

Incidentally, in the sixth embodiment of the transport refrigeration system 230, those elements that are the same as those of the above

Embodiments and in particular with those of the transport refrigeration system 30 are identical, provided with the same reference numerals, so that with respect to the description of the individual components in full content to the comments on these transport refrigeration systems reference can be made.

In a seventh embodiment of the transport refrigeration system shown in Fig. 13, in the same manner as in the third embodiment of the transport refrigeration system 30, the unit of refrigerant compressor 62 and

Motor / generator unit 82 integrated in the housing 106 in the

Plant module 254 "'mounted, and the high pressure line 66 and the

Low pressure line 76 are provided with the end pieces 124 and 134, respectively Allow the same to be used for carrying out the compressive strength test and the leak test, if the unit of refrigerant compressor 62, which has already been tested for pressure resistance and leaks, and

Motor / generator unit 82 in the housing 106 in the plant module 254 "'is arranged.

After assembly of the plant modules 252 "'and 254"' thus there is only the need to connect the end pieces 124 and 134 with the high pressure port 64 and the low pressure port 74 of the refrigerant compressor 62 and the rest of the controller 88 with the

Motor / generator unit 82 and the prime mover 84 to connect.

The support structure modules 251 "'and 253"' of the seventh embodiment are preferably identical to those of the fourth embodiment and can be assembled into a support structure 250 "'identical or similar to that of the fourth embodiment.

Incidentally, in this embodiment, all elements that are identical to those of the preceding embodiments of the transport refrigeration system 230 and in particular with those of the transport refrigeration system 30, provided with the same reference numerals, so that with respect to the description of these elements in full reference to the statements on the above embodiments can be taken.

Claims

PATENT APPLICATIONS

1. transport refrigeration system (39, 230), in particular for refrigerated vehicles,

comprising an engine (84), an electrical

Motor / generator unit (82) and a refrigerant circuit (80), which in turn comprises at least the following components:

a refrigerant compressor (62),

a heat-emitting heat exchanger (42) following the refrigerant compressor (22) in the refrigerant circuit (80),

a in the refrigerant circuit to the heat-emitting heat exchanger (42) following expansion unit (72) and

a heat-absorbing heat exchanger (32) following the expansion unit (72),

characterized in that in a first plant module (52, 252) at least the heat-emitting heat exchanger (42), the expansion unit (72) and the heat-absorbing heat exchanger (32) are arranged operatively assembled and that in a second plant module (54, 254) at least the prime mover (84) is arranged, and that the transport refrigeration system (30, 230) from the plant modules (52, 54, 252, 254) is composed.

2. Transport refrigeration system according to claim 1, characterized in that the refrigerant compressor (62) in the first system module (52, 252) is arranged.

3. Transport refrigeration system according to claim 2, characterized in that in the first plant module (52, 252) all components of the refrigerant circuit (80) are arranged.

4. transport refrigeration system according to claim 1, characterized in that the refrigerant compressor (62) in the second system module (54, 254) is arranged.

5. Transport refrigeration unit according to claim 4, characterized in that in the first plant module (52, 252) all components of the refrigerant circuit with the exception of the refrigerant compressor (62) are arranged.

6. Transport refrigeration system according to one of the preceding claims, characterized in that the motor / generator unit (82) comprises a single electric machine which is operable either as a motor or as a generator.

7. Transport refrigeration system according to one of the preceding claims, characterized in that the refrigerant compressor (62) and the electric motor / generator unit (82) are integrated in a common housing (106).

8. transport refrigeration system according to one of the preceding claims, characterized in that the motor / generator unit (82) in the first system module (52, 252) is arranged.

9. Transport refrigeration system according to one of claims 1 to 7, characterized

in that the motor / generator unit (82) is arranged in the second system module (54, 254).

10. Transport refrigeration system according to one of the preceding claims, characterized in that in the transport refrigeration system

Plant modules (52, 54, 252, 254) are arranged side by side in a direction transverse to the vehicle longitudinal direction of the refrigerator vehicle transverse direction (56, 256).

11. Transport refrigeration system according to claim 10, characterized in that the plant modules (52, 54) are arranged side by side in the horizontal direction.

12. Transport refrigeration system according to claim 10, characterized in that the plant modules (252, 254) are arranged side by side in the vertical direction.

13. Transport refrigeration system according to one of the preceding claims,

characterized in that the heat-emitting heat exchanger (42) is associated with a blower unit (46).

14. Transport refrigeration system according to claim 13, characterized in that the blower unit (46) in the first system module (52, 252) is arranged.

15. Transport refrigeration system according to claim 13 or 14, characterized in that the blower unit (46) is driven by its own electric motor.

16. Transport refrigeration system according to one of the preceding claims,

characterized in that the heat-absorbing heat exchanger (32) is associated with a blower unit (36).

17. Transport refrigeration unit according to claim 16, characterized in that the blower unit (36) in the first system module (52, 252) is arranged.

18. Transport refrigeration system according to claim 16 or 17, characterized in that the blower unit (36) is driven by its own electric motor.

19. Transport refrigeration system according to one of the preceding claims,

characterized in that the heat-receiving heat exchanger (32) is associated with a heating unit (102).

20. transport refrigeration system according to claim 19, characterized in that the heating unit (102) in the first system module (52, 252)

is arranged.

21. Transport refrigeration system according to one of the preceding claims, characterized in that a controller (88) of the transport refrigeration system (30, 130) in the first system module (52, 252) is arranged.

22. Transport refrigeration system according to one of the preceding claims, characterized in that in the second system module (54, 254) a blower unit (86) for cooling the drive machine (84) is arranged.

23. Transport refrigeration system according to one of the preceding claims, characterized in that the first system module (52, 252) has a support structure module (51, 53, 251, 253), which has a

Mounting base for the components of the first system module (52, 252) forms.

24. Transport refrigeration system according to one of the preceding claims, characterized in that the second system module (54, 254) has a support structure module (51, 53, 251, 253), which forms a mounting base for the components of the second investment module (54, 254).

25. A method for producing a transport refrigeration system (39, 230), in particular for refrigerated vehicles, comprising an engine (84), an electric motor / generator unit (82), a refrigerant circuit (80), which in turn comprises at least the following components:

a refrigerant compressor (62),

a heat-absorbing heat exchanger (32) following the expansion unit (72),

characterized in that in a first plant module (52, 252) at least the heat-emitting heat exchanger (42), the expansion unit (72) and the heat-absorbing heat exchanger (32) are assembled operatively and tested for compressive strength and tightness that in a second system module (54 , 254) at least the drive machine (84) is installed and then that the transport refrigeration system (30, 230) of the two

Plant modules (52, 54, 252, 254) is composed.

26. The method according to claim 25, characterized in that the first system module (52, 252) is tested in a pressure test chamber (DK) for compressive strength.

27. The method according to claim 25 or 26, characterized in that the first system module (52, 252) in a vacuum chamber (VK) is tested for leaks.

28. The method according to claim 27, characterized in that the first plant module (52, 252) is tested with in the assembled components of the refrigeration circuit (80) filled helium and a arranged in vacuum helium detection device (HS) for leaks.

29. The method according to any one of claims 25 to 28, characterized in that the refrigerant compressor (62) in the first system module (52, 252) is installed.

30. The method according to claim 29, characterized in that in the first plant module (52, 252) all components of the refrigerant circuit (80) are installed and then tested for compressive strength and tightness.

31. The method according to any one of claims 25 to 28, characterized in that the refrigerant compressor (62) in the second system module (54, 254) is installed.

32. The method according to claim 31, characterized in that in the first plant module (52, 252) all components of the refrigerant circuit with the exception of the refrigerant compressor (62) is functionally installed and tested for compressive strength and tightness.

33. The method according to any one of claims 25 to 32, characterized in that the motor / generator unit (82) a single

Electrical machine includes, either as a motor or as

Generator is operated.

34. The method according to any one of claims 25 to 33, characterized in that the motor / generator unit (82) in the first

Plant module (52, 252) is installed.

35. The method according to any one of claims 25 to 33, characterized in that the motor / generator unit (82) in the second

Plant module (54, 254) is installed.

36. The method according to any one of claims 25 to 35, characterized in that in the transport refrigeration system, the system modules (52, 54, 252, 254) in a direction transverse to the vehicle longitudinal direction of the refrigerated vehicle transverse direction (56, 256) are assembled side by side to the transport refrigeration system.

37. The method according to claim 36, characterized in that the

Plant modules (52, 54) are assembled side by side in the horizontal direction.

38. The method according to claim 36, characterized in that the

Plant modules (252, 254) are assembled side by side in the vertical direction.

39. The method according to any one of claims 25 to 38, characterized in that the heat-emitting heat exchanger (42) is associated with a blower unit (46).

40. The method according to claim 39, characterized in that the

Blower unit (46) in the first system module (52, 252) is installed.

41. The method according to any one of claims 25 to 30, characterized in that the heat-absorbing heat exchanger (32) is associated with a blower unit (36).

42. The method according to claim 41, characterized in that the blower unit (36) is installed in the first system module (52, 252).

43. The method according to any one of claims 25 to 42, characterized in that the heat-absorbing heat exchanger (32) is assigned a heating unit (102).

44. The method according to claim 43, characterized in that the heating unit (102) is installed in the first system module (52, 252).

45. The method according to any one of claims 25 to 44, characterized in that a controller (88) of the transport refrigeration system (30, 130) in the first system module (52, 252) is installed.

46. The method according to any one of claims 25 to 45, characterized in that in the second system module (54, 254) a fan unit (86) for cooling the drive machine (84) is installed.