EP4033190A2 - Heat exchanger, particularly a inner condenser for heat pump hvac systems - Google Patents
Heat exchanger, particularly a inner condenser for heat pump hvac systems Download PDFInfo
- Publication number
- EP4033190A2 EP4033190A2 EP22152045.5A EP22152045A EP4033190A2 EP 4033190 A2 EP4033190 A2 EP 4033190A2 EP 22152045 A EP22152045 A EP 22152045A EP 4033190 A2 EP4033190 A2 EP 4033190A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- distributor
- row
- heat exchange
- heat exchanger
- exchange row
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 46
- 238000005192 partition Methods 0.000 claims description 8
- 239000013529 heat transfer fluid Substances 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 2
- 239000002918 waste heat Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000007769 metal material Substances 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
- F28D1/0435—Combination of units extending one behind the other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
- F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
- F28F9/268—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by permanent joints, e.g. by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
- F28D2021/0084—Condensers
Definitions
- This invention relates in general to HVAC systems of motor vehicles, more specifically to HVAC systems of electric vehicles.
- Heat pump systems are increasingly being used for air conditioning in electric vehicles.
- one critical element is the inner condenser.
- the object of the invention is to provide as compact a solution as possible for an inner condenser for a heat pump HVAC system.
- a heat exchanger comprising a first heat exchange row and a second heat exchange row overlapping with each other, wherein each heat exchange row comprises a first distributor and a second distributor and a plurality of parallel, coplanar tubes interconnecting the first distributor and the second distributor,
- the heat exchanger 1 is a heat transfer fluid/air heat exchanger, in particular an inner condenser of a heat pump HVAC system for an electric vehicle.
- An example of this system is shown in Fig. 16 .
- IC denotes an inner condenser with which a fan B is associated, which fan is provided for supplying heated air to the interior of the passenger compartment of the vehicle.
- C denotes a compressor for circulating the heat transfer fluid inside the circuit of the heat pump.
- EV denotes an expansion valve
- OC denotes an outer condenser provided to absorb energy from the outside air.
- WHE denotes a recovery heat exchanger which is provided to recover waste heat from the electronic components and the battery of the vehicle.
- the heat exchanger 1 is a double-row heat exchanger; it therefore comprises a first heat exchange row 10 and a second heat exchange row 20 which overlap with each other.
- the overlapping relationship relates to the direction of the air which flows through the heat exchanger 1 and exchanges heat with the heat transfer fluid inside the heat exchanger 1; this direction is orthogonal to the main faces of the heat exchanger 1.
- the first heat exchange row 10 comprises a first distributor 11 and a second distributor 12 and a plurality of parallel, coplanar tubes 13 interconnecting the first distributor 11 and the second distributor 12. Fins 14 are arranged between adjacent tubes 13, which fins are not shown in detail.
- the second heat exchange row 20 comprises a first distributor 21 and a second distributor 22 and a plurality of parallel, coplanar tubes (not shown in the figures) interconnecting the first distributor 21 and the second distributor 22. Fins are arranged between adjacent tubes, which fins are not visible in the figures.
- Two lateral plates 31 and 32 are fixedly connected to the opposite sides of the mass formed by the tubes 13 of the first heat exchange row 10 and by the tubes of the second heat exchange row 20.
- Each of the distributors 11, 12, 21, 22 has a tubular body, for example having a circular cross section, on a lateral wall 11a, 12a, 21a, 22a of which a plurality of slots is formed, in each of which slots one end of a relevant tube 13 is inserted.
- the first distributor 11 of the first heat exchange row 10 has an inlet I of the heat exchanger 1.
- the second distributor 22 of the second heat exchange row 20 has an outlet OUT of the heat exchanger 1.
- outlet OUT of the heat exchanger 1.
- the heat exchanger 1 also comprises a fluid connection element 40 which connects the first distributor 11 of the first heat exchange row 10 to the first distributor 21 of the second row 20.
- a fluid connection element 40 which connects the first distributor 11 of the first heat exchange row 10 to the first distributor 21 of the second row 20.
- a partition 50 is arranged within the first distributor 11 of the first heat exchange row 10, which partition divides the first distributor 11 of the first heat exchange row 10 into an inlet chamber 11b and an outlet chamber 11c.
- the arrangement of the partition may be different to that described herein, or the partition may even be absent.
- the fluid connection element 40 connects the outlet chamber 11c of the first distributor 11 of the first heat exchange row 10 to the first distributor 21 of the second heat exchange row 20.
- the fluid connection element may be different to that described herein.
- the heat transfer fluid follows a U-shaped path in the first heat exchange row 10, by entering from the inlet IN of the first distributor 11 of the first heat exchange row 10 and flowing through the inlet chamber 11b of the first distributor 11 of the first heat exchange row 10, the tubes 13 connected thereto, the second distributor 12 of the first heat exchange row 10, and the tubes 13 which connect the second distributor 12 of the first heat exchange row 10 to the outlet chamber 11c of the first distributor 11 of the first heat exchange row 10.
- the heat transfer fluid flows from the outlet chamber 11c of the first distributor 11 of the first heat exchange row 10, through the fluid connection element 40, to the first distributor 21 of the second heat exchange row 20.
- the heat transfer fluid thus follows a single-pass path in the second heat exchange row 20, by flowing through the first distributor 21 of the second heat exchange row 20, the tubes of the second heat exchange row 20, and the second distributor 22 of the second heat exchange row 20, and finally exiting from the outlet OUT of the second distributor 22 of the second heat exchange row 20.
- the fluid connection element 40 is a monolithic element which is made of metal material and fixed to the lateral walls 11a and 21a of the relevant first row distributor and second row distributor, which in the example shown are the first distributor 11 of the first heat exchange row 10 and the first distributor 21 of the second heat exchange row 20.
- a plurality of conduits 41 is formed in the fluid connection element 40, which conduits fluidically connect the first row distributor 11 and the second row distributor 21.
- the fluid connection element 40 is joined to the lateral walls 11a and 21a of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20 by means of material coupling, for example by means of braze-welding.
- the fluid connection element 40 comprises two junction surfaces 42 and 43 which correspond, respectively, to the lateral wall 11a of the first distributor 11 of the first heat exchange row 10 and to the lateral wall 21a of the first distributor 21 of the second heat exchange row 20.
- the opposite ends of each of the conduits 41 lead, respectively, into one and the other of the junction surfaces 42 and 43, and correspond to respective holes made in the lateral walls 11a and 21a of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20.
- a heat exchanger according to another embodiment of the invention is shown. Elements corresponding to those of the preceding embodiment have been assigned the same reference signs; these elements will not be described again.
- Fig. 7 it is also possible to see the tubes of the second heat exchange row, which tubes are denoted by reference sign 23.
- the heat exchanger in Fig. 5 to 7 differs from that in Fig. 1 to 3 on account of the structure of the fluid connection element, which is now denoted by reference sign 40' and is also shown in Fig. 8 and 9 .
- the fluid connection element 40' is a hollow monolithic block which is made of metal material and fixedly connected at the top to ends 11c and 12e, respectively, of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20.
- a conduit or cavity 41' is formed in the fluid connection element 40', which conduit or cavity fluidically connects the first distributor 11 of the first heat exchange row 10 to the first distributor 21 of the second heat exchange row 20.
- the fluid connection element 40' is joined to the ends 11e and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20 by means of material coupling, for example by means of braze-welding.
- two openings or seats 42' and 43' are formed in the fluid connection element 40' and connected to the conduit 41', in which openings or seats the ends 11e and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20 are inserted, respectively.
- the conduit or cavity 41' of the fluid connection element 40' is also closed by a cover 44' (shown in Fig. 5 to 7 ).
- FIG. 10 shows only the detail of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20, which distributors are connected at the end to the fluid connection element, now denoted by 40".
- the fluid connection element 40" is a hollow monolithic plug which is made of metal material, is fork-shaped, and is inserted into the ends 11c and 12e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20.
- the fluid connection element 40" is joined to the ends 11c and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20 by means of material coupling, for example by means of braze-welding.
- a conduit or cavity (not shown in Fig. 10 ) is formed in the fluid connection element 40", which conduit or cavity fluidically connects the first distributor 11 of the first heat exchange row 10 to the first distributor 21 of the second heat exchange row 20. This conduit or cavity is closed, at the opposite end to the ends 11c and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20, by a cover 44".
- FIG. 11 shows only the detail of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20, which distributors are connected at the end to the fluid connection element, now denoted by 40′′′.
- the fluid connection element 40′′′ is a hollow monolithic plug which is made of metal material, is fork-shaped, and is inserted into the ends 11c and 12e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20.
- the fluid connection element 40′′′ is joined to the ends 11c and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20 by means of material coupling, for example by means of braze-welding.
- a conduit or cavity 41′′′ is formed in the fluid connection element 40′′′, which conduit or cavity fluidically connects the first distributor 11 of the first heat exchange row 10 to the first distributor 21 of the second heat exchange row 20.
- This conduit or cavity 41′′′ is closed, at the opposite end to the ends 11e and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20, by a cover 44′′′.
- Respective notches 11n and 21n are formed on the lateral walls 11a and 21a of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20, at the ends 11c and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20, in which notches the fluid connection element 40'" is inserted.
- This arrangement makes it possible for an axial extension of the joint between the connection element and distributors to be smaller than the embodiment in Fig. 10 or even equal to zero in the event that the fluid connection element 40′′′ is completely inserted within the bulk of the distributors 11 and 21, as in the example shown.
- FIG. 14 shows only the detail of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20, which distributors are connected at the end to the fluid connection element, now denoted by 40"".
- the fluid connection element 40"" is an elbow tube which is made of metal material and has opposite ends inserted into the ends 11c and 12e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20.
- the fluid connection element 40 ⁇ is joined to the ends 11e and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20 by means of material coupling, for example by means of braze-welding.
- Fig. 15 shows a further embodiment of the invention which is analogous to that in Fig. 14 but in which the fluid connection element 40"", instead of being monolithic, is formed by two shells 42 ⁇ and 43 ⁇ which are fixedly connected to each other, for example by means of crimping.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
- This invention relates in general to HVAC systems of motor vehicles, more specifically to HVAC systems of electric vehicles.
- Heat pump systems are increasingly being used for air conditioning in electric vehicles. In terms of space requirements, one critical element is the inner condenser.
- The object of the invention is to provide as compact a solution as possible for an inner condenser for a heat pump HVAC system.
- This object is achieved according to the invention by a heat exchanger comprising a first heat exchange row and a second heat exchange row overlapping with each other, wherein each heat exchange row comprises a first distributor and a second distributor and a plurality of parallel, coplanar tubes interconnecting the first distributor and the second distributor,
- wherein each of said distributors has a tubular body, on a lateral wall of which a plurality of slots is formed, in each of which slots one end of a relevant tube is inserted,
- wherein one of said first distributor and second distributor of the first heat exchange row has an inlet of the heat exchanger and one of said first distributor and second distributor of the second heat exchange row has an outlet of the heat exchanger,
- wherein the heat exchanger further comprises a fluid connection element connecting one of said first distributor and second distributor of the first heat exchange row, hereinafter referred to as the first row distributor, to one of said first distributor and second distributor of the second heat exchange row, hereinafter referred to as the second row distributor,
- wherein said fluid connection element is an element which is fixedly connected at the top to ends of the first row distributor and of the second row distributor and in which a conduit is formed that fluidically connects the first row distributor to the second row distributor,
- wherein the fluid connection element is formed as a hollow block in which two openings are formed, in which openings the ends of the first row distributor and of the second row distributor are inserted, respectively, or is formed as a hollow plug inserted into the ends of the first row distributor and of the second row distributor.
- Although this invention has been designed in particular for use with heat pump HVAC systems, it is evident how it may be applied more generally to double-row heat exchangers, in particular in cases where the heat exchanger needs to have a particularly compact structure.
- Preferred embodiments of the invention are defined in the dependent claims, which are to be understood as an integral part of this description.
- Further features and advantages of the invention will become clearer from the following detailed description of an embodiment of the invention, made with reference to the accompanying drawings, provided purely for illustrative and non-limiting purposes, in which:
-
Fig. 1 is a perspective view of a heat exchanger which is not claimed; -
Fig. 2 and 3 are, respectively, a front view and a sectional view of the heat exchanger inFig. 1 ; -
Fig. 4 is a perspective view of a fluid connection element of the heat exchanger inFig. 1 ; -
Fig. 5 is a perspective view of a heat exchanger according to the invention; -
Fig. 6 and 7 are, respectively, a front view and a sectional view of the heat exchanger inFig. 5 ; -
Fig. 8 and 9 are, respectively, a perspective view and a sectional view of a fluid connection element of the heat exchanger inFig. 5 ; -
Fig. 10 and11 are perspective views, respectively, of a second and a third embodiment of the invention; -
Fig. 12 and 13 are, respectively, a perspective view and a sectional view of a fluid connection element of the heat exchanger inFig. 11 ; -
Fig. 14 and 15 are perspective views, respectively, of an example which is not claimed; and -
Fig. 16 is a simplified diagram which shows an example of a heat pump HVAC system. - With reference to
Fig. 1 to 3 , a heat exchanger is shown, indicated as a whole byreference sign 1. In the example shown, theheat exchanger 1 is a heat transfer fluid/air heat exchanger, in particular an inner condenser of a heat pump HVAC system for an electric vehicle. An example of this system is shown inFig. 16 . IC denotes an inner condenser with which a fan B is associated, which fan is provided for supplying heated air to the interior of the passenger compartment of the vehicle. C denotes a compressor for circulating the heat transfer fluid inside the circuit of the heat pump. EV denotes an expansion valve, and OC denotes an outer condenser provided to absorb energy from the outside air. Lastly, WHE denotes a recovery heat exchanger which is provided to recover waste heat from the electronic components and the battery of the vehicle. - With reference again to
Fig. 1 to 3 , theheat exchanger 1 is a double-row heat exchanger; it therefore comprises a firstheat exchange row 10 and a secondheat exchange row 20 which overlap with each other. The overlapping relationship relates to the direction of the air which flows through theheat exchanger 1 and exchanges heat with the heat transfer fluid inside theheat exchanger 1; this direction is orthogonal to the main faces of theheat exchanger 1. The firstheat exchange row 10 comprises afirst distributor 11 and asecond distributor 12 and a plurality of parallel,coplanar tubes 13 interconnecting thefirst distributor 11 and thesecond distributor 12. Fins 14 are arranged betweenadjacent tubes 13, which fins are not shown in detail. The secondheat exchange row 20 comprises afirst distributor 21 and asecond distributor 22 and a plurality of parallel, coplanar tubes (not shown in the figures) interconnecting thefirst distributor 21 and thesecond distributor 22. Fins are arranged between adjacent tubes, which fins are not visible in the figures. Twolateral plates tubes 13 of the firstheat exchange row 10 and by the tubes of the secondheat exchange row 20. - The aforementioned elements are joined to each other in a manner known per se, for example by means of braze-welding.
- Each of the
distributors lateral wall relevant tube 13 is inserted. - The
first distributor 11 of the firstheat exchange row 10 has an inlet I of theheat exchanger 1. - The
second distributor 22 of the secondheat exchange row 20 has an outlet OUT of theheat exchanger 1. For convenience, hereinafter reference will only be made to this arrangement. However, the arrangement of the inlet and outlet may be different to that described herein. - The
heat exchanger 1 also comprises afluid connection element 40 which connects thefirst distributor 11 of the firstheat exchange row 10 to thefirst distributor 21 of thesecond row 20. For convenience, hereinafter reference will only be made to this arrangement. However, the arrangement of the fluid connection element may be different to that described herein. - A
partition 50 is arranged within thefirst distributor 11 of the firstheat exchange row 10, which partition divides thefirst distributor 11 of the firstheat exchange row 10 into aninlet chamber 11b and anoutlet chamber 11c. For convenience, hereinafter reference will only be made to this arrangement. However, the arrangement of the partition may be different to that described herein, or the partition may even be absent. - The
fluid connection element 40 connects theoutlet chamber 11c of thefirst distributor 11 of the firstheat exchange row 10 to thefirst distributor 21 of the secondheat exchange row 20. For convenience, hereinafter reference will only be made to this arrangement. However, the arrangement of the fluid connection element may be different to that described herein. - In the
heat exchanger 1 described above, the heat transfer fluid follows a U-shaped path in the firstheat exchange row 10, by entering from the inlet IN of thefirst distributor 11 of the firstheat exchange row 10 and flowing through theinlet chamber 11b of thefirst distributor 11 of the firstheat exchange row 10, thetubes 13 connected thereto, thesecond distributor 12 of the firstheat exchange row 10, and thetubes 13 which connect thesecond distributor 12 of the firstheat exchange row 10 to theoutlet chamber 11c of thefirst distributor 11 of the firstheat exchange row 10. The heat transfer fluid flows from theoutlet chamber 11c of thefirst distributor 11 of the firstheat exchange row 10, through thefluid connection element 40, to thefirst distributor 21 of the secondheat exchange row 20. The heat transfer fluid thus follows a single-pass path in the secondheat exchange row 20, by flowing through thefirst distributor 21 of the secondheat exchange row 20, the tubes of the secondheat exchange row 20, and thesecond distributor 22 of the secondheat exchange row 20, and finally exiting from the outlet OUT of thesecond distributor 22 of the secondheat exchange row 20. - With reference again to
Fig. 4 , thefluid connection element 40 is a monolithic element which is made of metal material and fixed to thelateral walls first distributor 11 of the firstheat exchange row 10 and thefirst distributor 21 of the secondheat exchange row 20. A plurality ofconduits 41 is formed in thefluid connection element 40, which conduits fluidically connect thefirst row distributor 11 and thesecond row distributor 21. - The
fluid connection element 40 is joined to thelateral walls first distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20 by means of material coupling, for example by means of braze-welding. For this purpose, thefluid connection element 40 comprises twojunction surfaces lateral wall 11a of thefirst distributor 11 of the firstheat exchange row 10 and to thelateral wall 21a of thefirst distributor 21 of the secondheat exchange row 20. The opposite ends of each of theconduits 41 lead, respectively, into one and the other of thejunction surfaces lateral walls first distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20. - With reference to
Fig. 5 to 7 , a heat exchanger according to another embodiment of the invention is shown. Elements corresponding to those of the preceding embodiment have been assigned the same reference signs; these elements will not be described again. InFig. 7 , it is also possible to see the tubes of the second heat exchange row, which tubes are denoted byreference sign 23. - The heat exchanger in
Fig. 5 to 7 differs from that inFig. 1 to 3 on account of the structure of the fluid connection element, which is now denoted by reference sign 40' and is also shown inFig. 8 and 9 . - The fluid connection element 40' is a hollow monolithic block which is made of metal material and fixedly connected at the top to
ends 11c and 12e, respectively, of thefirst distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20. A conduit or cavity 41' is formed in the fluid connection element 40', which conduit or cavity fluidically connects thefirst distributor 11 of the firstheat exchange row 10 to thefirst distributor 21 of the secondheat exchange row 20. - The fluid connection element 40' is joined to the
ends first distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20 by means of material coupling, for example by means of braze-welding. For this purpose, two openings or seats 42' and 43' are formed in the fluid connection element 40' and connected to the conduit 41', in which openings or seats theends first distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20 are inserted, respectively. The conduit or cavity 41' of the fluid connection element 40' is also closed by a cover 44' (shown inFig. 5 to 7 ). - With reference to
Fig. 10 , a further embodiment of the invention is shown. Elements corresponding to those of the preceding embodiments have been assigned the same reference signs; these elements will not be described again. For simplicity,Fig. 10 shows only the detail of thefirst distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20, which distributors are connected at the end to the fluid connection element, now denoted by 40". - The
fluid connection element 40" is a hollow monolithic plug which is made of metal material, is fork-shaped, and is inserted into theends 11c and 12e of thefirst distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20. Thefluid connection element 40" is joined to theends first distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20 by means of material coupling, for example by means of braze-welding. A conduit or cavity (not shown inFig. 10 ) is formed in thefluid connection element 40", which conduit or cavity fluidically connects thefirst distributor 11 of the firstheat exchange row 10 to thefirst distributor 21 of the secondheat exchange row 20. This conduit or cavity is closed, at the opposite end to theends first distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20, by acover 44". - With reference to
Fig. 11 to 13 , a further embodiment of the invention is shown. Elements corresponding to those of the preceding embodiments have been assigned the same reference signs; these elements will not be described again. For simplicity,Fig. 11 shows only the detail of thefirst distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20, which distributors are connected at the end to the fluid connection element, now denoted by 40‴. - The
fluid connection element 40‴ is a hollow monolithic plug which is made of metal material, is fork-shaped, and is inserted into theends 11c and 12e of thefirst distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20. Thefluid connection element 40‴ is joined to theends first distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20 by means of material coupling, for example by means of braze-welding. A conduit orcavity 41‴ is formed in thefluid connection element 40‴, which conduit or cavity fluidically connects thefirst distributor 11 of the firstheat exchange row 10 to thefirst distributor 21 of the secondheat exchange row 20. This conduit orcavity 41‴ is closed, at the opposite end to theends first distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20, by acover 44‴. -
Respective notches lateral walls first distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20, at theends first distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20, in which notches the fluid connection element 40'" is inserted. This arrangement makes it possible for an axial extension of the joint between the connection element and distributors to be smaller than the embodiment inFig. 10 or even equal to zero in the event that thefluid connection element 40‴ is completely inserted within the bulk of thedistributors - With reference to
Fig. 14 , a further embodiment of the invention is shown. Elements corresponding to those of the preceding embodiments have been assigned the same reference signs; these elements will not be described again. For simplicity,Fig. 14 shows only the detail of thefirst distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20, which distributors are connected at the end to the fluid connection element, now denoted by 40"". - The
fluid connection element 40"" is an elbow tube which is made of metal material and has opposite ends inserted into theends 11c and 12e of thefirst distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20. The fluid connection element 40ʺʺ is joined to theends first distributor 11 of the firstheat exchange row 10 and of thefirst distributor 21 of the secondheat exchange row 20 by means of material coupling, for example by means of braze-welding. -
Fig. 15 shows a further embodiment of the invention which is analogous to that inFig. 14 but in which thefluid connection element 40"", instead of being monolithic, is formed by two shells 42ʺʺ and 43ʺʺ which are fixedly connected to each other, for example by means of crimping.
Claims (7)
- A heat exchanger comprising a first heat exchange row (10) and a second heat exchange row (20) overlapping with each other, wherein each heat exchange row (10, 20) comprises a first distributor (11, 21) and a second distributor (12, 22) and a plurality of parallel, coplanar tubes (13, 23) interconnecting the first distributor (11, 21) and the second distributor (12, 22),wherein each of said distributors (11, 21, 12, 22) has a tubular body, on a lateral wall (11a, 21a, 12a, 22a) of which a plurality of slots is formed, in each of which slots one end of a relevant tube (13, 23) is inserted,wherein one of said first distributor and second distributor of the first heat exchange row has an inlet (IN) of the heat exchanger and one of said first distributor and second distributor of the second heat exchange row has an outlet (OUT) of the heat exchanger,wherein the heat exchanger further comprises a fluid connection element (40') connecting one of said first distributor and second distributor of the first heat exchange row, hereinafter referred to as the first row distributor (11), to one of said first distributor and second distributor of the second heat exchange row, hereinafter referred to as the second row distributor (21),wherein said fluid connection element is an element (40') which is fixedly connected at the top to ends (11e, 21e) of the first row distributor (11) and of the second row distributor (21) and in which a conduit (41') is formed that fluidically connects the first row distributor (11) to the second row distributor (21), wherein the fluid connection element (40') is formed as a hollow block in which two openings (42', 43') are formed, in which openings the ends (11e, 21e) of the first row distributor (11) and of the second row distributor (21) are inserted, respectively.
- The heat exchanger according to claim 1, wherein the first distributor (11) of the first heat exchange row (10) has the inlet (IN) of the heat exchanger,wherein the second distributor (22) of the second heat exchange row (20) has the outlet (OUT) of the heat exchanger,wherein a partition (50) is arranged within the first distributor (11) of the first heat exchange row (10), which partition divides the first distributor (11) of the first heat exchange row (10) into an inlet chamber (11b) and an outlet chamber (11c),wherein the first row distributor is the first distributor (11) of the first heat exchange row (11) and the second row distributor is the first distributor (21) of the second heat exchange row (20), and wherein the fluid connection element (40') connects the outlet chamber (11c) of the first distributor (11) of the first heat exchange row (10) to the first distributor (21) of the second heat exchange row (20).
- A heat exchanger comprising a first heat exchange row (10) and a second heat exchange row (20) overlapping with each other, wherein each heat exchange row (10, 20) comprises a first distributor (11, 21) and a second distributor (12, 22) and a plurality of parallel, coplanar tubes (13, 23) interconnecting the first distributor (11, 21) and the second distributor (12, 22),wherein each of said distributors (11, 21, 12, 22) has a tubular body, on a lateral wall (11a, 21a, 12a, 22a) of which a plurality of slots is formed, in each of which slots one end of a relevant tube (13, 23) is inserted,wherein one of said first distributor and second distributor of the first heat exchange row has an inlet (IN) of the heat exchanger and one of said first distributor and second distributor of the second heat exchange row has an outlet (OUT) of the heat exchanger,wherein the heat exchanger further comprises a fluid connection element (40"; 40‴) connecting one of said first distributor and second distributor of the first heat exchange row, hereinafter referred to as the first row distributor (11), to one of said first distributor and second distributor of the second heat exchange row, hereinafter referred to as the second row distributor (21),wherein said fluid connection element is an element (40"; 40"') which is fixedly connected at the top to ends (11e, 21e) of the first row distributor (11) and of the second row distributor (21) and in which a conduit (41"') is formed that fluidically connects the first row distributor (11) to the second row distributor (21), wherein the fluid connection element (40"; 40‴) is formed as a hollow plug inserted into the ends (11e, 21e) of the first row distributor (11) and of the second row distributor (21).
- The heat exchanger according to claim 3, wherein respective notches (11n, 21n) are formed on the lateral walls (11a, 21a) of the first row distributor (11) and of the second row distributor (21), at the ends (11e, 21e) of the first row distributor (11) and of the second row distributor (21), in which notches the fluid connection element (40‴) is inserted.
- The heat exchanger according to claim 3 or 4, wherein the first distributor (11) of the first heat exchange row (10) has the inlet (IN) of the heat exchanger,wherein the second distributor (22) of the second heat exchange row (20) has the outlet (OUT) of the heat exchanger,wherein a partition (50) is arranged within the first distributor (11) of the first heat exchange row (10), which partition divides the first distributor (11) of the first heat exchange row (10) into an inlet chamber (11b) and an outlet chamber (11c),wherein the first row distributor is the first distributor (11) of the first heat exchange row (11) and the second row distributor is the first distributor (21) of the second heat exchange row (20), and wherein the fluid connection element (40"; 40"') connects the outlet chamber (11c) of the first distributor (11) of the first heat exchange row (10) to the first distributor (21) of the second heat exchange row (20).
- A heat pump HVAC system for a vehicle, comprising an inner condenser (IC), wherein said inner condenser is a heat exchanger according to any of the preceding claims.
- The system according to claim 6, further comprising a compressor (C) for circulating the heat transfer fluid inside a circuit of the heat pump, an expansion valve (EV), an outer condenser (OC) provided to absorb energy from the outside air, and a recovery heat exchanger (WHE) provided to recover waste heat from electronic components and the battery of the vehicle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP24169433.0A EP4375609A3 (en) | 2021-01-20 | 2022-01-18 | Heat exchanger, particularly a inner condenser for heat pump hvac systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102021000000914A IT202100000914A1 (en) | 2021-01-20 | 2021-01-20 | HEAT EXCHANGER, IN PARTICULAR INTERNAL CONDENSER FOR HVAC SYSTEMS WITH HEAT PUMP |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP24169433.0A Division EP4375609A3 (en) | 2021-01-20 | 2022-01-18 | Heat exchanger, particularly a inner condenser for heat pump hvac systems |
Publications (3)
Publication Number | Publication Date |
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EP4033190A2 true EP4033190A2 (en) | 2022-07-27 |
EP4033190A3 EP4033190A3 (en) | 2022-10-19 |
EP4033190B1 EP4033190B1 (en) | 2024-04-17 |
Family
ID=75340090
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP22152045.5A Active EP4033190B1 (en) | 2021-01-20 | 2022-01-18 | Heat exchanger, particularly a inner condenser for heat pump hvac systems |
EP24169433.0A Pending EP4375609A3 (en) | 2021-01-20 | 2022-01-18 | Heat exchanger, particularly a inner condenser for heat pump hvac systems |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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EP24169433.0A Pending EP4375609A3 (en) | 2021-01-20 | 2022-01-18 | Heat exchanger, particularly a inner condenser for heat pump hvac systems |
Country Status (2)
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EP (2) | EP4033190B1 (en) |
IT (1) | IT202100000914A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001133187A (en) * | 1999-11-05 | 2001-05-18 | Showa Alum Corp | Multiple heat exchanger |
DE102009031696A1 (en) * | 2009-07-04 | 2011-01-05 | Modine Manufacturing Co., Racine | Heat exchanger assembly for use in motor vehicle, has large heat exchanger and small heat exchanger fastened to one another, where connecting piece of small heat exchanger is integrated in or on collection box of large heat exchanger |
US20120222848A1 (en) * | 2011-03-01 | 2012-09-06 | Visteon Global Technologies, Inc. | Integrated counter cross flow condenser |
JP2013072607A (en) * | 2011-09-28 | 2013-04-22 | Keihin Thermal Technology Corp | Method of manufacturing heat exchanger |
JP6711317B2 (en) * | 2017-06-13 | 2020-06-17 | 株式会社デンソー | Heat exchanger |
WO2019011058A1 (en) * | 2017-07-13 | 2019-01-17 | 杭州三花研究院有限公司 | Heat exchanger |
-
2021
- 2021-01-20 IT IT102021000000914A patent/IT202100000914A1/en unknown
-
2022
- 2022-01-18 EP EP22152045.5A patent/EP4033190B1/en active Active
- 2022-01-18 EP EP24169433.0A patent/EP4375609A3/en active Pending
Also Published As
Publication number | Publication date |
---|---|
EP4033190A3 (en) | 2022-10-19 |
EP4033190B1 (en) | 2024-04-17 |
EP4375609A3 (en) | 2024-08-21 |
IT202100000914A1 (en) | 2022-07-20 |
EP4375609A2 (en) | 2024-05-29 |
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