JP2013543101A - Fluid / fluid heat exchanger - Google Patents

Abstract

  The subject of the present invention relates to a heat exchanger (100) that conducts heat between a first fluid and a second fluid, the heat exchanger (100) cooperating with an end chamber (126c). A stack of plates (124) including a last plate (124) and a penultimate plate (124), the last plate (124) having an inlet for at least a second fluid (121) and an outlet (122) for the second fluid is provided. The stack of plates (124) defines an inlet passage (130) for the second fluid and an outlet passage (131) for the second fluid. The end chamber (126c) houses channeling means (127), the channeling means (127) including an inlet (121) for the second fluid and an inlet passage (130) for the second fluid. Between an inflow channel (128a) that can be used to direct a second fluid between and an outlet (122) for the second fluid and an outlet passage (131) for the second fluid. And an outflow channel (128b) that can be used to direct two fluids.

Description

  The present invention is in the field of heating, ventilation and / or air conditioning systems attached to automobiles. The subject of the present invention is a heat exchanger that is incorporated in the air-conditioning loop and / or the secondary loop of such heating, ventilation and / or air-conditioning systems. Another subject of the present invention is an air conditioning loop comprising such a heat exchanger.

  The heat exchanger comprises a tube core bundle formed from a stack of first tubes for circulation of a first fluid. Between two adjacent first tubes is a passage for circulation of the second fluid.

  Such a heat exchanger is provided with an inlet orifice and an outlet orifice for the first fluid so that the first fluid can circulate through the heat exchanger. The heat exchanger is also provided with an inlet orifice and an outlet orifice for the second fluid so that the second fluid can circulate through the heat exchanger.

  It is a known practice to use such a heat exchanger to allow heat exchange between two different thermodynamic refrigerants. It is also a known practice to use such heat exchangers to exchange heat between refrigerant and / or coolant and / or air flow.

  In particular, the inlet and outlet orifices for the first fluid and the second fluid are located on the end face of the heat exchanger. These orifices are generally located near each corner of the end face. Such a heat exchanger is known, in particular, from French patent application 2891615.

  When arranged in this way, the inlet and outlet for one and the same fluid are spaced apart. Therefore, it is necessary to install a manifold assembly so that the heat exchanger can be connected to the air conditioning loop and / or the secondary loop of the heating, ventilation and / or air conditioning system. This increases the overall size of the heating, ventilation, and / or air conditioning system and compromises compactness.

  In order to improve the heat transfer efficiency of the heat exchanger, it is necessary to increase the surface area for heat exchange between the first fluid and the second fluid. This requires in particular that the heat exchanger has specially tailored dimensions. As a result, conventional heat exchangers have an inlet orifice and an outlet orifice for one and the same fluid that are separated by a significant distance.

  Such positioning of the inlet and outlet orifices for the fluid can be achieved in an air conditioning system attached to the vehicle, in particular in an air conditioning loop in which the refrigerant known by the notation R744, R134a etc. circulates or with water. Limits the ways in which heat exchangers can be incorporated in secondary loops through which a coolant such as a mixture with glycol or the like circulates.

  In particular, the connection of such heat exchangers to the air conditioning loop and / or the secondary loop often requires a complex form of manifold that results in a pressure drop.

  It can also be seen that it is difficult to connect further components to the heat exchanger. In particular, such further components, in particular expansion members, etc. have inlet and outlet orifices with a small center-to-center distance between the orifices. Thus, in order to connect the heat exchanger inlet and outlet orifices with the further component inlet and outlet orifices, it is necessary to define a complex path with respect to the manifold pipe. Alternatively, it is necessary to use additional connecting parts. All of these solutions increase the manufacturing cost, size, and weight of the heating, ventilation, and / or air conditioning system.

  An object of the present invention is to propose a heat exchanger that can efficiently transfer heat between a first fluid and a second fluid, which is simple and easy to use. An air-conditioning loop of a heating, ventilation and / or air-conditioning system mounted on a motor vehicle, which is flexible and particularly optimized to allow connection of further components having a relatively arbitrary center-to-center distance And / or provide a way to connect to the secondary loop.

  Such a heat exchanger for transferring heat between a first fluid and a second fluid is a plate comprising a last plate and a penultimate plate that cooperatively define an end chamber. The last plate is provided with at least one inlet for the second fluid and one outlet for the second fluid, the plate stack being for the second fluid And an outlet passage for the second fluid.

  In particular, the end chamber contains channeling means, which channeling means for directing the second fluid between the inlet for the second fluid and the inlet passage for the second fluid. A flow path and an outlet circulation flow path for directing the second fluid between the outlet for the second fluid and the outlet passage for the second fluid.

  According to a first embodiment, the channeling means consists of at least one boss formed on the last plate and / or the penultimate plate of the stack of plates.

  According to a second embodiment, the channeling means consists of an insert housed in the end chamber. According to a variant, the insert is formed from at least one blade. Preferably, the blade comprises a base wall and a contour connected to each other by side walls.

  Preferably, the base wall is in contact with the penultimate plate of the plate stack and the contour is in contact with the last plate of the plate stack. Thus, an inlet circulation channel and an outlet circulation channel for the second fluid are defined by the insert and the last plate.

  According to another variant, the insert is formed by two blades joined together. One base wall of the blade is in contact with the penultimate plate of the plate stack, and the other base wall of the blade is in contact with the last plate of the plate stack, and The respective contours of the blades are in contact with each other.

  In particular, according to various alternative embodiments, the insert is formed from two separate distribution compartments. Preferably, the two distribution compartments are the same.

  The insert also consists of a dispensing device formed as an integral part and comprising two dispensing chambers. Preferably, the two distribution chambers are arranged with local symmetry with respect to each other.

  Further, according to the present invention, the inlet circulation channel and the outlet circulation channel for the second fluid are orthogonal to the inlet passage for the second fluid and the outlet channel for the second fluid.

  Furthermore, the inlet for the second fluid and the outlet for the second fluid are arranged in the central region of the last plate of the plate stack.

  The air conditioning loop according to the present invention comprises a heat exchanger as defined above. For this purpose, the air conditioning loop comprises a connection element, which comprises an intake opening and a discharge opening for the second fluid and a central axis passing through the center of the intake opening and the center of the discharge opening. The main axis forms an angle of 0 ° to 90 ° with the first median axis of the last plate of the plate stack.

  Additional features and advantages of the present invention will become apparent from a consideration of the following description taken in conjunction with the accompanying drawings, which are provided by way of non-limiting examples, and in which: Can help supplement the interpretation of how the is implemented, but can contribute to defining the invention, if desired.

1 is a schematic diagram of a heating, ventilation and / or air conditioning system incorporating a heat exchanger according to the present invention. 1 is a schematic diagram of a heating, ventilation and / or air conditioning system incorporating a heat exchanger according to the present invention. The perspective view of the heat exchanger which concerns on this invention. FIG. 4 is a partially exploded view of the heat exchanger of FIG. 3. The exploded view of the heat exchanger of FIG. 3 and FIG. FIG. 4 is a partial schematic view of each implementation variation of the heat exchanger depicted in FIG. 3. FIG. 4 is a partial schematic view of each implementation variation of the heat exchanger depicted in FIG. 3. Schematic of the embodiment of the insert according to the present invention. Schematic of the embodiment of the insert according to the present invention. The schematic of the last plate of the heat exchanger which concerns on the modification regarding the integration in the air-conditioning loop based on this invention. The schematic of the last plate of the heat exchanger which concerns on the modification regarding the integration in the air-conditioning loop based on this invention. The schematic of the last plate of the heat exchanger which concerns on the modification regarding the integration in the air-conditioning loop based on this invention.

  1 and 2 are schematic views of a heating, ventilation and / or air conditioning system 1 incorporating a heat exchanger according to the present invention. The heating, ventilation and / or air conditioning system 1 shown in FIGS. 1 and 2 is attached to a motor vehicle in order to change the air thermal parameters of an internal air flow 8 which is configured to be distributed into the interior of the motor vehicle. Configured as follows.

  For this purpose, the heating, ventilation and / or air conditioning system 1 comprises an air conditioning loop 2 through which one of the refrigerants known for example by the notation R744, R134a etc. circulates.

  The air-conditioning loop 2 is operable as a compressor 3 capable of compressing refrigerant and a condenser 4, and a first heat exchanger 4, in particular an air / refrigerant heat exchanger 4 through which an external air flow passes, An expansion member 5 that can expand the refrigerant and an accumulator 6 that can form a refrigerant storage region and prevent the refrigerant in the liquid state from flowing into the compressor 3 are provided.

  FIG. 1 shows a first variant embodiment of a heating, ventilation and / or air conditioning system 1. According to the first variant embodiment, the air conditioning loop 2 comprises a second heat exchanger 7 operable as an evaporator 7 through which the internal air flow 8 passes. As the internal air flow 8 passes through the second heat exchanger 7, it can be cooled and / or dehumidified before it diffuses into the interior of the automobile.

  In addition, the air conditioning loop 2 also includes an internal heat exchanger 9, and this internal heat exchanger 9 includes a refrigerant present in the high-pressure circulation channel 10 of the internal heat exchanger 9 and a low-pressure circulation channel 11 of the internal heat exchanger 9. It is configured to allow heat transfer to and from the refrigerant present therein.

  The high-pressure circulation channel 10 extends between the high-pressure inlet 12 and the high-pressure outlet 13 of the internal heat exchanger 9. The low pressure circulation channel 11 extends between the low pressure inlet 14 and the low pressure outlet 15 of the internal heat exchanger 9.

  Therefore, in the direction 16 in which the refrigerant circulates in the air conditioning loop 2, the refrigerant is the compressor 3, the first heat exchanger 4, the high-pressure circulation channel 10 of the internal heat exchanger 9, the expansion member 5, It circulates continuously through the second heat exchanger 7, the accumulator 6, the low-pressure circulation channel 11 of the internal heat exchanger 9, and the compressor 3.

  FIG. 2 shows a second variant embodiment of the heating, ventilation and / or air conditioning system 1. According to a second variant embodiment, the heating, ventilation and / or air conditioning system 1 comprises a refrigerant / coolant heat exchanger 17, which circulates through the air conditioning loop 2. Heat transfer between the refrigerant and the coolant circulating through the secondary loop 18. The coolant is formed, for example, from a mixture of water and glycol.

  Therefore, the refrigerant / coolant heat exchanger 17 is disposed in the air conditioning loop 2 and the secondary loop 18.

  The refrigerant / coolant heat exchanger 17 includes a refrigerant circulation passage 19 that extends between the refrigerant inlet 20 and the refrigerant outlet 21. The refrigerant / coolant heat exchanger 17 also includes a coolant circulation passage 22 that extends between the coolant inlet 23 and the coolant outlet 24.

  The secondary loop 18 also includes a pump 25 configured to push the coolant circulation and a third heat exchanger 26 or unit heater 26, and the internal air flow 8 is distributed into the interior of the automobile. It passes through the third heat exchanger 26 before.

  Therefore, in the direction 27 in which the coolant flows in the secondary loop 18, the coolant passes through the pump 25, the refrigerant / coolant heat exchanger 17, the coolant circulation channel 22, and then the third heat exchanger 26. And continuously circulates through the pump 25.

  Independently, the refrigerant is compressed in the air-conditioning loop 2 in the refrigerant circulation direction 16 by the compressor 3, the first heat exchanger 4, the expansion member 5, the refrigerant circulation channel 19, the accumulator 6, and the compression. It circulates continuously through the vessel 3.

  In other variants not shown, the refrigerant / coolant heat exchanger 17 can be located at other points in the air conditioning loop 2.

  Moreover, according to other embodiment which is not shown in figure, heating, ventilation, and / or the air conditioning system 1 comprise the form described in FIG. 2 with the internal heat exchanger 9 which comprises the form described in FIG. And a refrigerant / coolant heat exchanger 17.

  FIG. 3 is a perspective view of the exchanger of the heat exchanger 110 according to the present invention. The heat exchanger 100 can serve as the internal heat exchanger 9 in the form shown in FIG. 1 or the refrigerant / coolant heat exchanger 17 in the form shown in FIG. 2 without discrimination. .

  In other words, the heat exchanger 100 allows heat transfer between a first fluid, such as a low pressure or high pressure refrigerant, and a second fluid, such as a low pressure or high pressure refrigerant or coolant.

  The heat exchanger 100 includes a circulation channel 110 for a first fluid that extends between an inlet 111 for the first fluid and an outlet 112 for the first fluid. The heat exchanger 100 also includes a circulation channel 120 for the second fluid that extends between an inlet 121 for the second fluid and an outlet 122 for the second fluid.

  According to the first variant embodiment of the heating, ventilation and / or air conditioning system 1 shown in FIG. 1, the first fluid consists of a high-pressure refrigerant and the second fluid consists of a low-pressure refrigerant.

  In that case, the circulation channel 110 for the first fluid includes the high-pressure circulation channel 10, the inlet 111 for the first fluid corresponding to the high-pressure inlet 12, and the first fluid corresponding to the high-pressure outlet 13. And an outlet 112 for. Similarly, the circulation flow path 120 for the second fluid includes the low pressure circulation flow path 11, the inlet 121 for the second fluid corresponding to the low pressure inlet 14, and the second fluid corresponding to the low pressure outlet 15. And an outlet 122 for.

  In another variant, the first fluid consists of a low-pressure refrigerant and the second fluid consists of a high-pressure refrigerant. At this time, the layout quoted earlier is reversed.

  Also, according to the second variant embodiment of the heating, ventilation and / or air conditioning system 1 shown in FIG. 2, the first fluid consists of a refrigerant and the second fluid consists of a coolant.

  In that case, the circulation flow path 110 for the first fluid includes the refrigerant circulation flow path 19, the inlet 111 for the first fluid corresponding to the refrigerant inlet 20, and the first fluid corresponding to the refrigerant outlet 21. And an outlet 112 for. Similarly, the circulation flow path 120 for the second fluid includes the coolant circulation flow path 22, the inlet 121 for the second fluid corresponding to the coolant inlet 23, and the first corresponding to the coolant outlet 24. And an outlet 122 for two fluids.

  In another variant, the first fluid consists of a coolant and the second fluid consists of a refrigerant. The layout described above is reversed.

  The heat exchanger 100 includes an end face 123 that includes an inlet 111 for a first fluid, an outlet 112 for a first fluid, an inlet 121 for a second fluid, And an outlet 122 for two fluids. The first fluid and the second fluid enter the heat exchanger 100 at the end face 123 and are discharged from the heat exchanger 100.

  According to another variant embodiment not shown, the end face 123 has only an inlet 111 for the first fluid and an outlet 112 for the first fluid, or an inlet 121 and a second fluid for the second fluid. Only an outlet 122 for two fluids can be provided.

  The heat exchanger 100 according to the present invention arranged in this way is discriminated considering that the heat exchanger 100 according to the present invention has both an inlet and an outlet on the end face 123 for at least one same fluid. The circulation channel 110 for the first fluid and / or the circulation channel for the second fluid arranged in an “I” shape, “U” shape, or any other arrangement shape 120 is a heat exchanger with 120.

  In the illustrated example, the heat exchanger 100 has an overall shape of a parallelepiped. However, the heat exchanger 100 can adopt other shapes.

  The heat exchanger 100 is preferably a plate heat exchanger mainly formed from a laminate of plates 124. In this embodiment, the plate 124 has a substantially flat rectangular shape, and has a depth P in the first direction and a width L in the second direction. Preferably, the first direction is perpendicular to the second direction. The plate 124 further has portions of different depths obtained, in particular by pressing.

  4 and 5 are a partially exploded view and an exploded view, respectively, of the heat exchanger 110 of FIG. The heat exchanger 110 is composed of a stack of plates 124.

  Two adjacent plates 124 are joined together by their peripheral edges 125 to form a circulation tube for the first fluid and the second fluid.

  By laminating several tubes formed from two plates 124 joined together, the first circulation chamber 126a for the first fluid and the second fluid, as depicted in FIG. Second circulation chamber 126b. When arranged in this manner, the heat exchanger 100 has a plurality of first circulation chambers 126a for the first fluid and a plurality of second circulations for the second fluid, which are alternately formed with each other. And a chamber 126b.

  Such an alternate arrangement of the first circulation chamber 126a for the first fluid and the second circulation chamber 126b for the second fluid results in the heat between the first fluid and the second fluid. Can be optimized for transmission.

  One of the plates 124 of the heat exchanger 100, referred to as the last plate 124, comprises an end face 123. The heat exchanger 100 also includes an end chamber 126 c defined by the last plate 124 and the penultimate plate 124 of the stack of plates 124 that form the heat exchanger 100. The penultimate plate 124 is adjacent to the last plate 124.

  The end chamber 126c is, without discrimination, the first circulation chamber 126a for the first fluid or the second circulation chamber for the second fluid according to various different ways of implementing the heat exchanger 100. 126b. In the illustrated example, end chamber 126c is a second circulation chamber 126b for the second fluid.

  In the present invention, preferably the end chamber 126c circulates the second fluid, first, from the inlet 121 for the second fluid to the set of plates 124 for the second fluid. To the inlet passage 130, secondly, at least one that can be directed from the circulation outlet passage 131 for the second fluid formed in the set of plates 124 toward the outlet 122 for the second fluid. It is proposed that the channeling means 127, in particular the insert 127, should be accommodated.

  In particular, the channeling means 127, in particular the insert 127, has an inlet circulation channel 128a for directing the second fluid between the inlet 121 for the second fluid and the circulation inlet passage 130 for the second fluid. And an inlet circulation channel 128b for guiding the second fluid between the outlet 122 for the second fluid and the circulation outlet passage 131 for the second fluid.

  In other words, in the example shown, the end chamber 126c contains two circulation channels 128a, 128b for the second fluid.

  The insert 127 allows an inlet 121 for the second fluid and an outlet 122 for the second fluid to be formed in any relatively free area on the end face 123 of the heat exchanger 100. The inlet 121 for the second fluid and the outlet 122 for the second fluid may in particular be arranged in the central region 129 of the last plate 124 of the stack of plates 124.

  The central region 129 is a region on the outer surface 123 of the last plate 124 disposed on both sides of the first median axis x in the first direction of the last plate 124 and the second median axis y in the second direction. It is prescribed. In particular, the central region 129 corresponds to less than 30% of the depth P and / or width L of the last plate 124.

  The inlet circulation channel 128a and the inlet circulation channel 128b for the second fluid in the end chamber 126c are for the inlet 121 and the second fluid for the second fluid penetrating the last plate 124. Provides great flexibility with respect to positioning of the outlet 122.

  Thus, the inlet circulation channel 128a for the second fluid has an inlet 121 for the second fluid, an inlet for the second fluid that extends through all the plates 124 except the last plate 124. Connected to the circulation passage 130. An inlet circulation passage 130 for the second fluid connects the second circulation chambers 126b for the second fluid. Similarly, the outlet circulation passage 128b for the second fluid has an outlet circulation passage 131 for the second fluid that extends through all the plates 124 except the last plate 124. To the outlet 122 for An outlet circulation passage 131 for the second fluid connects the second circulation chambers 126b for the second fluid.

  Preferably, the inlet circulation channel 128a for the second fluid is orthogonal to the inlet circulation channel 130 for the second fluid, and the outlet circulation channel 128b for the second fluid is the second Orthogonal to the outlet circulation passage 131 for the other fluid.

  Alternatively, according to another embodiment, the insert 127 is housed in an end chamber 126c through which the first fluid circulates, and the insert 127 guides the second fluid. Accordingly, the insert 127 includes an inlet circulation channel 128a and an outlet circulation channel 128b for the second fluid, and the inlet circulation channel 128a and the outlet circulation channel 128b allow circulation of the first fluid. Located in the end chamber 126c that enables.

  According to the embodiment shown in FIG. 5, the inlet circulation channel 128 a and the outlet circulation channel 128 b for the second fluid are formed in the form of a further component consisting of an insert 127. Thus, to form the inlet circulation channel 128a and the outlet circulation channel 128b for the second fluid, the insert 127 is the last plate 124 and last of the stack of plates 124 forming the heat exchanger 100. To the second plate 124 in the end chamber 126c.

  Alternatively, the inlet circulation channel 128a and the outlet circulation channel 128b for the second fluid are made from at least one boss, which is on and / or from the last plate 124 of the stack of plates 124. Formed on the second plate 124.

  6 and 7 are partial schematic views of respective modified embodiments of the heat exchanger 100 according to the present invention. In the first alternative embodiment shown in FIG. 6, the inlet circulation channel 128 a and the outlet circulation channel 128 b for the second fluid are the last plate in the stack of plates 124 that form the heat exchanger 100. 124 and the penultimate plate 124 is made by an insert 127 housed in the end chamber 126c. According to the example of FIG. 6, the insert 127 is formed from a single blade 132.

  The blade 132 is formed from a pressed strip, such as a metal strip. The blade 132 includes a base wall 132a and a contour 132b. The base wall 132a and the contour 132b are coupled to each other by the side wall 132c.

  In order to define an inlet circulation channel 128a and an outlet circulation channel 128b for the second fluid, the base wall 132a contacts the penultimate plate 124 of the stack of plates 124 and is contoured. 132b contacts the last plate 124 of the stack of plates 124.

  The insert 127 is assembled with the last plate 124 and the penultimate plate 124 of the stack of plates 124, preferably by brazing or the like.

  Accordingly, the inlet circulation channel 128 a and the outlet circulation channel 128 b for the second fluid are defined by the insert 127 and the last plate 124.

  In another embodiment shown in FIG. 7, the inlet circulation channel 128 a and the outlet circulation channel 128 b for the second fluid are the last plate 124 and last of the stack of plates 124 that form the heat exchanger 100. To the second plate 124 by an insert 127 housed in the end chamber 126c. According to the example of FIG. 7, the insert 127 is formed by mutual coupling of two blades 133.

  Each blade 133 is formed from a pressed strip, for example a metal strip. Each blade 133 includes a base wall 133a and a contour 133b that are coupled to each other by a side wall 133c.

  In order to define an inlet circulation channel 128a and an outlet circulation channel 128b for the second fluid, the two blades 133 are coupled together such that their respective contours 133b contact each other. Also, one base wall 133a of the blade 133 is in contact with the second plate 124 from the end of the stack of plates 124, and the other base wall 133a of the blade 133 is the last plate of the stack of plates 124. 124.

  The insert 127 is assembled with the last plate 124 and the penultimate plate 124 of the stack of plates 124, preferably by brazing or the like.

  Accordingly, the inlet circulation channel 128 a and the outlet circulation channel 128 b for the second fluid are defined by the insert 127 in the internal space located between the two blades 133.

  Also, to ensure communication between the inside of the insert 127 and the inlet 121 for the second fluid and the outlet 122 for the second fluid, the blade 133 in contact with the last plate 124 is provided with a circulation opening. 134 and the circulation opening 134 cooperates with an inlet 121 for the second fluid and an outlet 122 for the second fluid, respectively.

  According to this embodiment, each blade 133 is formed from a strip, for example a metal strip, which is assembled with the last plate 124 and the penultimate plate 124, in particular by brazing.

  Reference is now made to FIGS. 8a and 8b, which are schematic illustrations of two embodiments of an insert 127 according to the present invention.

  According to a first variant embodiment shown in FIG. 8a, the insert 127 consists of two separate distribution compartments 135a, 135b. Preferably, the two distribution compartments 135a, 135b are identical. In the example shown in FIG. 8a, the two distribution compartments 135a, 135b are arranged with local symmetry with respect to each other. As a result, the two distribution compartments 135a and 135b define an inlet circulation channel 128a and an outlet circulation channel 128b, respectively.

  According to a second variant embodiment shown in FIG. 8b, the insert 127 consists of an integral part comprising two distribution chambers 136a, 136b. Preferably, the two distribution chambers 136a, 136b are identical. According to the example shown in FIG. 8b, two distribution chambers 136a, 136b are arranged with local symmetry with respect to each other.

  It is also beneficial for the walls forming the insert 127 to extend in a first direction and a second direction, respectively, as shown in FIG. 8a. Alternatively, at least one of the walls forming the insert 127 may form a predetermined angle with the first direction and / or the second direction, as shown in FIG. 8b. Such a special arrangement allows the inlet 121 for the second fluid and the outlet 122 for the second fluid to be optimally positioned.

  FIGS. 9 a to 9 c are schematic views of the last plate 24 of the heat exchanger 100 in the respective modified built-in configuration into the air conditioning loop 2 of the air conditioning system 1.

  More specifically, in FIGS. 9 a-9 c, the last plate 124 has connections that allow the heat exchanger 100 to be connected to the air conditioning loop 2 and / or other components of the secondary loop 18 of the air conditioning system 1. Element 140 is provided.

  In particular, the connecting element 140 is the expansion member 5 of the air conditioning loop 2 or any other component that forms part of the air conditioning loop 2 and / or the secondary loop 18.

  The connecting element 140 comprises an intake opening 141 and a discharge opening 142 for a second fluid, which are an inlet 121 for the second fluid and an outlet 122 for the second fluid, respectively. Communicate.

  The connecting element 140 has a main axis A that passes through the centers of the intake opening 141 and the discharge opening 142.

  9a to 9c, the connecting element 140 is positioned such that the main axis A forms a predetermined angle of 0 ° to 90 °, for example about 45 °, with the first median axis x. .

  More specifically, in FIG. 9a, the angle is equal to 0 °, in FIG. 9b, the angle is equal to 90 °, and in FIG. 9c, the angle is equal to 45 °.

  As is very clear, the invention is not limited to the embodiments described above which are given as examples only. The present invention includes various improvements, alternatives, and other variations that may occur to those skilled in the art within the scope of the present invention, and in particular, combinations of the various embodiments described above.

Claims (16)

A heat exchanger (100) for transferring heat between the first fluid and the second fluid, from the last plate (124) and from the last, cooperating to define the end chamber (126c) A stack of plates (124) comprising a second plate (124), the last plate (124) having at least one inlet (121) for the second fluid and the second fluid; And an outlet passage (131) for the second fluid and an outlet passage (131) for the second fluid. In the heat exchanger (100) defining
The end chamber (126c) accommodates channeling means (127), which is comprised of an inlet (121) for the second fluid and an inlet passage for the second fluid ( 130) an inlet circulation channel (128a) for directing the second fluid to, and an outlet (122) for the second fluid and an outlet passage (131) for the second fluid. And an outlet circulation channel (128b) for guiding the second fluid between the heat exchanger (100) and the heat exchanger (100).   The channeling means (127) comprises at least one boss formed on the last plate (124) and / or the penultimate plate (124) of the stack of the plates (124). The heat exchanger (100) according to claim 1, wherein   The heat exchanger (100) according to claim 1, characterized in that the channeling means (127) comprises an insert (127) housed in the end chamber (126c).   The heat exchanger (100) according to claim 3, characterized in that the insert (127) is formed from at least one blade (132, 133).   The heat according to claim 4, characterized in that the blade (132, 133) comprises a contour (132b, 133b) and a base wall (132a, 133a) connected to each other by side walls (132c, 133c). Exchanger (100).   The base wall (132a) is in contact with the penultimate plate (124) of the laminated body of the plates (124), and the contour (132b) is formed of the laminated body of the plates (124). The heat exchanger (100) of claim 5, wherein the heat exchanger (100) is in contact with the last plate (124).   The inlet circulation channel (128a) and the outlet circulation channel (128b) for the second fluid are defined by the insert (127) and the last plate (124). The heat exchanger (100) of claim 6.   The insert (127) is formed by two blades (133) joined together, and one of the base walls (133a) of the blades (133) is the one of the laminate of the plates (124). The second from the last plate (124) is in contact with the other base wall (133a) of the blade (133) in contact with the last plate (124) of the stack of the plates (124). And the heat exchanger (100) according to claim 5, characterized in that the contours (133b) of the blades (133) are in contact with each other.   The heat exchanger (100) according to any of claims 3 to 8, characterized in that the insert (127) is formed from two separate distribution compartments (135a, 135b).   The heat exchanger (100) according to claim 9, characterized in that the two distribution compartments (135a, 135b) are identical.   Heat exchanger (100) according to any of claims 3 to 8, characterized in that the insert (127) consists of a distribution device (136) comprising two distribution chambers (136a, 136b).   The heat exchanger (100) according to claim 11, characterized in that the two distribution chambers (136a, 136b) are arranged with local symmetry with respect to each other.   The inlet circulation channel (128a) and the outlet circulation channel (128b) for the second fluid are the inlet passage (130) for the second fluid and the second fluid. The heat exchanger (100) according to any of claims 1 to 12, characterized in that it is orthogonal to the outlet passage (131).   The inlet (121) for the second fluid and the outlet (122) for the second fluid are the central region (129) of the last plate (124) of the stack of plates (124). The heat exchanger (100) according to any one of claims 1 to 13, characterized in that it is arranged in a).   Air conditioning loop (2) and / or secondary loop (18) comprising a heat exchanger (100) according to any of the preceding claims.   The air conditioning loop (2) and / or the secondary loop (18) includes an intake opening (141) and a discharge opening (142) for the second fluid, a center of the intake opening (141) and the discharge opening. A connecting element (140) comprising a main axis (A) passing through the center of (142), said main axis (A) being the first midline of said last plate (124) of the stack of said plates (124) Air conditioning loop (2) and / or secondary loop (18) according to claim 15, characterized in that it forms an angle of 0 ° to 90 ° with the axis.

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