Heat exchanger for a vehicle

Abstract

A heat exchanger (100) for a vehicle, which is provided between a compressor and an expansion valve in an air conditioning system in which a refrigerant is circulated, comprising: a heat exchanger unit (110) which has a first flow path (114) and a second flow path (116) in an internal section in which the refrigerant condenses through a heat exchange between the refrigerant flowing through the first flow path (114) and a working fluid flowing through the second flow path (116); a first and a second inlet (118a, 118b) which are formed on one side of the heat exchanger unit (110) to introduce the refrigerant and the working fluid into the inner section respectively, and which are each connected to the corresponding first and second flow paths (114, 116); a first and a second outlet (119a, 119b) which are formed on another side of the heat exchanger unit (110) and are each connected to the corresponding first and second flow paths (114, 116) in order to discharge the refrigerant and the working fluid that have flowed through the heat exchanger unit (110); and a noise reduction unit (120) which is provided on one side of the heat exchanger unit (110) corresponding to the first inlet (118a) into which the refrigerant flows, in order to reduce noise and vibration generated when the refrigerant supplied by the compressor moves, wherein the noise reduction unit (120) comprises: a cover unit (122) with one end which is mounted to cover an upper section of the first inlet (118a) from a point corresponding to the first inlet (118a), and another end which extends from the first inlet (118a) in a diagonal direction to a corner section of the heat exchanger unit (110) to form a refrigerant flow path (124); a connecting hole (123) formed at the other end of the cover unit (122) so that the refrigerant flows in the refrigerant flow path (124); and two partition walls (126) which are shaped to project from an inner surface of the cover unit (122) on both sides of the cover unit (122) into the refrigerant flow path (124) in the direction of one side of the heat exchanger unit (110) and to extend along a longitudinal direction of the cover unit (122) to form a respective separate space (S) on both sides of the refrigerant flow path (124); wherein the partition walls (126) are formed with a respective reduction hole (128) which connects the refrigerant flow path (124) and the corresponding space (S).

Description

Background of the invention; Field of the invention

[0001] The present invention relates to a heat exchanger for a vehicle for condensing a refrigerant by heat exchange with a working fluid. Related technology

[0002] An air conditioning system comprises: a compressor for compressing a refrigerant; a condenser for condensing and liquefying the refrigerant compressed in the compressor; an expansion valve for rapidly expanding the refrigerant condensed and liquefied in the condenser; an evaporator for evaporating the refrigerant expanded in the expansion valve; and the like.

[0003] In this process, the refrigerant used in the air conditioning system is moved through an air conditioning pipe, which connects the compressor, the condenser, the expansion valve and the evaporator.

[0004] However, in the air conditioning system of the technology used, as described above, noise and vibration are generated in the air conditioning pipe.

[0005] To prevent this, a method has been used in which a silencer is mounted on the pipe, but the layout is complex and the costs increase.

[0006] The information disclosed here in this background of the invention is intended only to provide a better understanding of the general background of the invention and should not be construed as an acknowledgment or any form of indication that this information represents prior art already known to those skilled in the art.

[0007] For example, an oil-coolant heat exchanger is known from WO 2012 / 061928 A1, comprising: a heat exchanger unit having a first flow path and a second flow path in an inner section, in which oil and coolant flow respectively, a first and a second inlet, which introduce the oil and coolant into the inner section respectively, a first and a second outlet, which carry the oil and coolant out respectively, wherein three of the inlets and outlets are arranged on one side of the heat exchanger unit and the remaining inlet and outlet is arranged on the other side of the heat exchanger unit, and a noise reduction unit.

[0008] Furthermore, heat exchangers with a heat exchanger unit in an air conditioning system are known, for example, from CN 101749892 A and US 5 042 577 A, comprising: a heat exchanger unit which has a flow path in an inner section into which the refrigerant flows, an inlet which is formed on one side of the heat exchanger unit to introduce the refrigerant into the inner section, an outlet which is formed on the side of the heat exchanger unit to discharge the refrigerant, and a noise reduction unit.

[0009] Another heat exchanger with a heat exchanger unit in an air conditioning system is known, for example, from US 5,983,999 A, comprising: a heat exchanger unit having a flow path in an inner section into which the refrigerant flows, an inlet formed on one side of the heat exchanger unit to introduce the refrigerant into the inner section, an outlet formed on the other side of the heat exchanger unit to discharge the refrigerant, and a noise reduction unit.

[0010] Other types of heat exchangers are known, for example, from DE 10 2006 009 948 A1, EP 2 251 631 A1 and JP 2008-32358 A. Brief explanation of the invention

[0011] The object of the present invention is to provide a heat exchanger for a vehicle which is capable of reducing noise and vibrations generated in the air conditioning ductwork. This object is achieved with a heat exchanger having the features according to claims 1, 4, and 6. Further embodiments of the respective heat exchangers are described in the corresponding dependent claims. In other words, the present invention provides a heat exchanger for a vehicle to reduce noise and vibrations generated by the movement of a refrigerant.

[0012] As described above, according to various embodiments of the present invention, the noise and vibration generated during the movement of the refrigerant can be reduced, thereby preventing the noise and vibration from being transmitted into the interior of the vehicle.

[0013] Additionally, since the noise and vibration generated during the movement of the refrigerant can be reduced without installing a separate silencer, space utilization can be improved and manufacturing costs reduced.

[0014] The devices of the present invention have further advantages, as can be seen in detail from the attached drawings incorporated herein and the following detailed description, which together serve to explain certain principles of the present invention. Brief description of the drawings Fig. Figure 1 is a perspective view illustrating an exemplary heat exchanger for a vehicle according to the present invention. Fig. Figure 2 is a perspective rear view illustrating an exemplary heat exchanger for a vehicle according to the present invention. Fig. 3 is a sectional view along line AA of Fig. 1. Fig. Figure 4 is a sectional view illustrating a reduction hole applied to a noise reduction unit in an exemplary heat exchanger for a vehicle according to the present invention. Fig. Figure 5 is a perspective view illustrating an exemplary heat exchanger for a vehicle according to the present invention. Fig. Figure 6 is a sectional view along line BB from Fig. 5. Fig. Figure 7 is a sectional view illustrating a reduction hole applied to an exemplary noise reduction unit in a heat exchanger for a vehicle according to the present invention. Fig. Figure 8 is a perspective view illustrating an exemplary heat exchanger for a vehicle according to the present invention. Fig. 9 is a section view along line CC of Fig. 8. Detailed description

[0015] Reference will now be made in detail to the various embodiments of the present invention, examples of which are illustrated in the accompanying drawings and described below. While the invention is described in connection with the exemplary embodiments, it is understood that the present description is not intended to limit the invention to these exemplary embodiments. On the other hand, it is intended that the invention covers not only the exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that fall within the scope and protection of the invention, as defined in the attached claims.

[0016] Fig. 1 and Fig. Figures 2 are a perspective view and a perspective rear view illustrating a heat exchanger for a vehicle according to different embodiments of the present invention. Fig. 3 is a sectional view along line AA of Fig. 1, and Fig. Figure 4 is a sectional view illustrating a reduction hole applied to a noise reduction unit in a heat exchanger for a vehicle according to various embodiments of the present invention.

[0017] Referring to Fig. According to various embodiments of the present invention, a heat exchanger 100 for a vehicle has a structure in which a refrigerant used in an air conditioning system of the vehicle can condense through heat exchange with a working fluid and noise and vibration generated during the movement of the refrigerant can be reduced.

[0018] In this case, the heat exchanger 100 for a vehicle according to various embodiments of the present invention is provided on the air conditioning pipe between a compressor and an expansion valve, in which a refrigerant condenses through a heat exchange of the refrigerant with a working fluid.

[0019] As in Fig. 1 and Fig. Figure 2 shows that the heat exchanger 100 is configured according to various embodiments of the present invention to include: a heat exchanger unit 110, a first and a second inlet 118a and 118b, a first and a second outlet 119a and 119b and a noise reduction unit 120, and each configuration for the components is described in detail below.

[0020] Firstly, the heat exchanger unit 110 is alternately shaped with a first flow path 114 and a second flow path 116 in an inner section in which a refrigerant condenses through a heat exchange of a refrigerant flowing through the first flow path 114 and a working fluid flowing through the second flow path 116.

[0021] The heat exchanger unit 110, which has such a configuration, can be formed in a plate shape (or also referred to as a "plate heat exchanger") with a plurality of stacked plates 112.

[0022] The working fluid can be coolant that has been cooled by a radiator in a vehicle cooling system.

[0023] In various embodiments, the first and second inlets 118a and 118b are formed on one side of the heat exchanger unit 110, so that the refrigerant and the working fluid flow into the inner section, and each of these is connected to the first and second flow paths 114 and 116, respectively.

[0024] In addition, the first and second outlets 119a and 119b are each formed on a different side of the heat exchanger unit 110 corresponding to the first and second inlets 118a and 118b respectively and are connected to the first and second flow paths 114 and 116 respectively, so that the working fluid and the refrigerant passing through the heat exchanger unit 110 can be discharged.

[0025] Although the heat exchanger unit 110 is described in various embodiments with two flow paths, two inlets and two outlets as an exemplary embodiment, it is understandable that other suitable configurations can also be used.

[0026] Additionally, although in various embodiments the working fluid has been described as a cooling water as an exemplary embodiment, it is understandable that other suitable configurations can also be used.

[0027] Additionally, the noise reduction unit 120 is provided on one side of the heat exchanger unit 110 corresponding to the first inlet 118a, into which the refrigerant flows, in order to reduce noise and vibration generated when the refrigerant supplied by the compressor moves.

[0028] As in Fig. 1 and Fig. As shown in Figure 3, the noise reduction unit 120 is configured to include: a cover unit 122, a connecting hole 123, a partition 126 and a reduction hole 128, and each configuration for the components is described in detail below.

[0029] First, the cover unit 122 is mounted to cover an upper section of the first inlet 118a by means of one end of the cover unit 122 on one side of the heat exchanger unit 110.

[0030] Another end of the cover unit 122 extends from the first inlet 118a in a diagonal direction to a corner section of the heat exchanger unit 110, so that a refrigerant flow path 124 is formed with the heat exchanger unit 110.

[0031] The cover unit 122 can be mounted on one side of the heat exchanger unit 110 by welding and the like.

[0032] In various embodiments, the connecting hole 123 is formed on an upper side of the other end section of the cover unit 122, and the refrigerant flows in the refrigerant flow path 124.

[0033] In this process, the refrigerant flowing in the refrigerant flow path 124 is guided through the first inlet 118a and through the first flow path 114 of the heat exchanger unit 110, so that the refrigerant condenses through heat exchange with a cooling water, which is a working fluid, flowing through the second inlet 118b and through the second flow path 116 in the inner section of the heat exchanger unit 110.

[0034] The partition 126 is shaped to project on both sides of an inner surface of the cover unit 122 and to extend along a longitudinal direction of the cover unit 122, and a separate space S is formed on both sides of the inner section of the refrigerant flow path 124 by means of the partition.

[0035] Additionally, the reduction hole 128 is formed between one side of the heat exchanger unit 110 and the partition 126, so that the refrigerant flow path 124 and the space S are connected.

[0036] The reducing hole 128 can be shaped along the longitudinal direction of the partition 126 so that the refrigerant passing through the refrigerant flow path 124 can flow into space S, or it can be shaped at intervals, as shown in Fig. 4 shown.

[0037] Although the reducing hole 128 has been described in various embodiments as having a square shape, it is not limited to the disclosed embodiments, and the shape can be polygonal, including a circle and a square.

[0038] When the refrigerant flows through the connecting hole 123 and is moved along the refrigerant flow path 124, the refrigerant flows through the reducing hole 128 into the space S, which is formed by means of the partition 126 on both sides of the cover unit 122.

[0039] Then the refrigerant causes an inverse frequency of the frequency of the noise and vibration generated during movement along the refrigerant motion path 124 as the refrigerant flows through the reduction hole 128 into space S.

[0040] The inverse frequency cancels out the standing waves caused by the noise and vibration generated during movement along the refrigerant flow path 124, thereby reducing the vibration and noise.

[0041] Due to the noise and vibration generated when a fluid moves along the path of motion, the standing waves are introduced into a closed and sealed space connected via a small inlet or hole formed in the path of motion. At this point, the noise and vibration of the inverse frequency of the standing wave are generated, with the noise of a specific frequency band (mainly the high-frequency range) being canceled out by the inverse frequency.

[0042] This means that in various embodiments of the present invention, the noise reduction unit 120 is configured integrally with the heat exchanger unit 110, so that the noise and vibration can be reduced when the refrigerant is moved.

[0043] Accordingly, the refrigerant used in the vehicle's air conditioning system can condense through heat exchange with the working fluid, and the noise and vibration generated when the refrigerant moves can be simultaneously reduced by the noise reduction unit 120, thus enabling the overall NVH performance of the vehicle to be improved.

[0044] Additionally, since the noise and vibration generated by the movement of the refrigerant can be reduced by means of the noise reduction unit 120, which is integrally configured in the heat exchanger 100, without the need to install a separate silencer, space utilization can be improved by simplifying a layout in a narrow engine compartment.

[0045] Fig. Figure 5 is a perspective view illustrating a heat exchanger for a vehicle according to various embodiments of the present invention. Fig. Figure 6 is a sectional view along line BB from Fig. 5. Fig. Figure 7 is a sectional view illustrating a reduction hole applied to a noise reduction unit in a heat exchanger for a vehicle according to various embodiments of the present invention.

[0046] Referring to Fig. 5 to Fig. 7 The heat exchanger 200 is configured according to various embodiments of the present invention to have: a heat exchanger unit 210, a first and a second inlet 218a and 218b, a first and a second outlet 219a and 219b (see Fig. 2) and a noise reduction unit 220, as in Fig. 5 shown, and each configuration for the components is described in detail below.

[0047] First, the heat exchanger unit 210 is alternately shaped with a first flow path 214 and a second flow path 216 in an inner section in which a refrigerant condenses through a heat exchange of a refrigerant flowing through the first flow path 214 and a working fluid flowing through the second flow path 216.

[0048] The heat exchanger unit 210, which has such a configuration, can be formed in a plate shape (or also referred to as a "plate heat exchanger") with a plurality of stacked plates 212.

[0049] The working fluid can be coolant that has been cooled by a radiator in a vehicle cooling system.

[0050] In various embodiments, the first and second inlets 218a and 218b are formed on one side of the heat exchanger unit 210, so that the refrigerant and the working fluid flow into the inner section, and each of these is connected to the first and second flow paths 214 and 216, respectively.

[0051] Additionally, as mentioned above regarding Fig. As described in section 2, the first and second outlets 219a and 219b are each formed on a different side of the heat exchanger unit 210 corresponding to the first and second inlets 218a and 218b, respectively, and connected to the first and second flow paths 214 and 216, respectively, so that the working fluid and the refrigerant passing through the heat exchanger unit 210 can be discharged.

[0052] Although the heat exchanger unit 210 has been described in various embodiments with two flow paths, two inlets and two outlets as different embodiments, it is not limited to the disclosed embodiments.

[0053] Additionally, even though the working fluid has been described as a cooling water in various embodiments, it is not limited to the disclosed embodiments, and a different working fluid can also be used.

[0054] Additionally, the noise reduction unit 220 is provided on one side of the heat exchanger unit 210 corresponding to the first inlet 218a, into which the refrigerant flows, in order to reduce noise and vibration generated when the refrigerant supplied by the compressor moves.

[0055] The noise reduction unit 220 according to various embodiments of the present invention can be configured to have: a cover plate 221, a connecting hole 223, a partition 226 and a reduction hole 228, as shown in Fig. 6 is shown, and each configuration for the components is described in detail below.

[0056] First, the cover plate 221 is mounted on one side of the heat exchanger unit 210, and a projection 222 is formed on one side of it.

[0057] The projection 222 extends from a point corresponding to the first inlet 218a in a diagonal direction of the first inlet 218a towards a corner section of the heat exchanger unit 210, so that a refrigerant flow path 224 is formed with one side of the heat exchanger unit 210 in the inner section thereof.

[0058] The cover plate 221 is formed with a hole which is connected to the first and second inlets 218a and 218b by corresponding to the first and second inlets 218a and 218b, and is formed with the same appearance as the plate 212, so that it can be stacked on one side of the heat exchanger unit 210.

[0059] In various embodiments, the connecting hole 223 is formed on the projection on the opposite side of the first inlet 218a, and the refrigerant flows in the refrigerant flow path 224.

[0060] In this process, the refrigerant flowing in the refrigerant flow path 224 is guided through the first inlet 218a and through the first flow path 214 of the heat exchanger unit 210, so that the refrigerant condenses through heat exchange with a cooling water, which is a working fluid, flowing through the second inlet 218b and through the second flow path 216 in the inner section of the heat exchanger unit 210.

[0061] The partition 226 is shaped to project on both sides of an inner surface of the projection 222 and to extend along a longitudinal direction of the projection 222. The partition 226 forms a separate space S on both sides of the inner section of the refrigerant flow path 224.

[0062] Additionally, the reduction hole 228 is formed between one side of the heat exchanger unit 210 and the partition wall 226, so that the refrigerant flow path 224 and the space S are connected.

[0063] The reducing hole 228 can be formed along the longitudinal direction of the partition 226 so that the refrigerant passing through the refrigerant flow path 124 can flow into space S, or it can be formed at intervals along the longitudinal direction of the partition 226, as shown in Fig. 7 shown.

[0064] Although the reducing hole 228 has been described in various embodiments as having a square shape, it is not limited to the disclosed embodiments, and the shape can be polygonal, including a circle and a square.

[0065] When the refrigerant flows through the connecting hole 223 and is moved along the refrigerant movement path 224, in the noise reduction unit 220 with the configuration described above, the refrigerant flows through the reduction hole 228 into the space S, which is formed by means of the partition 226 on both sides of the inner section of the projection 222.

[0066] Then the refrigerant causes an inverse frequency of the frequency of the noise and vibration generated during movement along the refrigerant motion path 224 as the refrigerant flows through the reduction hole 228 into space S.

[0067] In various embodiments of the present invention, the noise reduction unit 220 is integrally configured with the heat exchanger unit 210, so that there is no need to fix the air conditioning pipe for a longer length or to mount a separate silencer to reduce the noise and vibration generated when the refrigerant is moved.

[0068] Accordingly, the refrigerant used in the vehicle's air conditioning system can condense through heat exchange with the working fluid, and the noise and vibration generated when the refrigerant moves can be simultaneously reduced by the noise reduction unit 220, thus preventing the transmission of noise and vibration into the vehicle's interior.

[0069] Additionally, since the noise and vibration generated by the movement of the refrigerant can be reduced by means of the noise reduction unit 220, which is integrally configured in the heat exchanger 200, without redesigning the air conditioning pipe or installing a separate silencer, a layout in a narrow engine compartment can be simplified.

[0070] Fig. Figure 8 is a perspective view illustrating a heat exchanger for a vehicle according to various embodiments of the present invention, and Fig. 9 is a section view along line CC of Fig. 8.

[0071] Referring to Fig. 8 to Fig. 9 The heat exchanger 300 is configured according to various embodiments of the present invention to have: a heat exchanger unit 310, a first and a second inlet 318a and 318b, a first and a second outlet 319a and 319b (see Fig. 2) and a noise reduction unit 320, as in Fig. 8 is shown, and each configuration for the components is described in detail below.

[0072] First, the heat exchanger unit 310 is alternately shaped with a first flow path 314 and a second flow path 316 in an inner section in which a refrigerant condenses through a heat exchange of a refrigerant flowing through the first flow path 314 and a working fluid flowing through the second flow path 316.

[0073] The heat exchanger unit 310, which has such a configuration, can be formed in a plate shape (or also referred to as a "plate heat exchanger") with a plurality of stacked plates 312.

[0074] The working fluid can be coolant that has been cooled by a radiator in a vehicle cooling system.

[0075] In various embodiments, the first and second inlets 318a and 318b are formed on one side of the heat exchanger unit 310, so that the refrigerant and the working fluid flow into the inner section, and each of these is connected to the first and second flow paths 314 and 316, respectively.

[0076] Additionally, as mentioned above regarding Fig. As described in section 2, the first and second outlets 319a and 319b are each formed on a different side of the heat exchanger unit 310 corresponding to the first and second inlets 318a and 318b respectively, and are connected to the first and second flow paths 314 and 316 respectively, so that the working fluid and the refrigerant passing through the heat exchanger unit 310 can be discharged.

[0077] Although the heat exchanger unit 310 has been described in various embodiments with two flow paths, two inlets and two outlets as different embodiments, it is not limited to the disclosed embodiments.

[0078] Additionally, even though the working fluid has been described as a cooling water in various embodiments, it is not limited to the disclosed embodiments.

[0079] Additionally, the noise reduction unit 320 is provided on one side of the heat exchanger unit 310 corresponding to the first inlet 318a, into which the refrigerant flows, in order to reduce noise and vibration generated when the refrigerant supplied by the compressor moves.

[0080] The noise reduction unit 320 according to various embodiments of the present invention can be configured to have: a cover plate 321, a connecting hole 323, a top cover 326 and a reduction hole 328, as shown in Fig. 9 is shown, and each configuration for the components is described in detail below.

[0081] First, the cover plate 321 is mounted on one side of the heat exchanger unit 310, and a projection 322 is formed on one side of it.

[0082] The projection 322 extends from a point corresponding to the first inlet 318a in a diagonal direction of the first inlet 318a towards a corner section of the heat exchanger unit 310, so that a refrigerant flow path 324 is formed with one side of the heat exchanger unit 310 in the inner section thereof.

[0083] The cover plate 321 is formed with a hole which is connected to the first and second inlets 318a and 318b by corresponding to the first and second inlets 318a and 318b, and is formed with the same appearance as the plate 312, so that it can be stacked on one side of the heat exchanger unit 310.

[0084] In various embodiments, the connecting hole 323 is formed on the projection 322 on the opposite side of the first inlet 318a, and the refrigerant flows in the refrigerant flow path 324.

[0085] In this process, the refrigerant flowing in the refrigerant flow path 324 is guided through the first inlet 318a and through the first flow path 314 of the heat exchanger unit 310, so that the refrigerant condenses through heat exchange with a cooling water, which is a working fluid, flowing through the second inlet 318b and through the second flow path 316 in the inner section of the heat exchanger unit 310.

[0086] The upper cover 326 is mounted longitudinally on the upper section of the projection 322 to form the space S with the projection 322.

[0087] The upper cover 326 can be mounted on the upper section of the projection 322 by welding or the like.

[0088] Furthermore, the reduction hole 328 is shaped in the longitudinal direction of the projection 322 corresponding to the upper cover 326, so that the refrigerant flow path 324 and the space S are connected to each other.

[0089] The reduction hole 328 can be formed at intervals along the longitudinal direction of the projection 322, so that the refrigerant passing through the refrigerant flow path 324 can flow into space S.

[0090] Although the reducing hole 328 has been described in various embodiments as having a circular shape, it is not limited to the disclosed embodiments, and the shape can be polygonal.

[0091] When the refrigerant flows through the connecting hole 323 and is moved along the refrigerant movement path 324, in the noise reduction unit 320 with the configuration described above, the refrigerant flows into the space S, which is formed between the projection 322 and the upper cover 326, through the reduction hole 328, which is formed on the upper section of the projection 322.

[0092] Then the refrigerant causes an inverse frequency of the frequency of the noise and vibration generated during movement along the refrigerant motion path 324 as the refrigerant flows through the reduction hole 328 into space S.

[0093] The inverse frequency cancels out the standing waves due to the noise and vibration generated during movement along the refrigerant motion path 324, thereby making it possible to reduce the vibration and noise of the refrigerant generated by the refrigerant motion path 324.

[0094] This means that in various embodiments of the present invention, the noise reduction unit 320 is integrally configured with the heat exchanger unit 310 as a resonance-based silencer which utilizes the principle of a Helmholtz resonator, so that there is no need to make the air conditioning pipe longer or to install a separate silencer to reduce the noise and vibration generated when the refrigerant is moved.

[0095] The refrigerant used in the vehicle's air conditioning system can condense through heat exchange with the working fluid, and the noise and vibration generated when the refrigerant moves can be simultaneously reduced by the noise reduction unit 320, thus preventing the transmission of noise and vibration into the vehicle's interior.

[0096] Additionally, since the noise and vibration generated by the movement of the refrigerant can be reduced by means of the noise reduction unit 320, which is integrally configured in the heat exchanger 300, without redesigning the air conditioning pipe or installing a separate silencer, a layout in a tight engine compartment can be simplified.

[0097] Although the heat exchanger 300 has been described according to various embodiments of the present invention, in which the upper cover 326 is mounted on the upper section of the projection 322 of the cover plate 321, which is integrally and / or monolithically formed with the projection 322, as in various embodiments, it is not limited to the disclosed embodiments. For example, instead of the cover plate 321, the cover unit 122 can be mounted on the first inlet 318a, which is formed on the heat exchanger unit 310, and the reducing hole is formed on the cover unit 122, thereby enabling the mounting of the upper cover as described in the aforementioned embodiments.

[0098] For the purpose of explaining and precisely defining the attached claims, terms such as "upper", "rear", etc. are used to describe the features of the exemplary embodiments with reference to the positions as shown in the figures.

[0099] The preceding descriptions of the specific exemplary embodiments of the present invention serve the purpose of illustration and description. They are not intended to be exhaustive or to limit the invention to the exact form disclosed. Many modifications and variations are obviously possible in light of the teachings above. The exemplary embodiments were selected and described to explain certain principles of the invention and their practical application, thereby enabling those skilled in the art to manufacture and use the various embodiments of the present invention, as well as their numerous alternatives and modifications. It is intended that the scope of protection of the invention is defined by the stated claims and their equivalents.

Claims

[1] A heat exchanger (100) for a vehicle, which is provided between a compressor and an expansion valve in an air conditioning system in which a refrigerant is circulated, comprising: a heat exchanger unit (110) which has a first flow path (114) and a second flow path (116) in an internal section in which the refrigerant condenses through a heat exchange between the refrigerant flowing through the first flow path (114) and a working fluid flowing through the second flow path (116); a first and a second inlet (118a, 118b) which are formed on one side of the heat exchanger unit (110) to introduce the refrigerant and the working fluid into the inner section respectively, and which are each connected to the corresponding first and second flow paths (114, 116); a first and a second outlet (119a, 119b) which are formed on another side of the heat exchanger unit (110) and are each connected to the corresponding first and second flow paths (114, 116) in order to discharge the refrigerant and the working fluid that have flowed through the heat exchanger unit (110); and a noise reduction unit (120) which is provided on one side of the heat exchanger unit (110) corresponding to the first inlet (118a) into which the refrigerant flows, in order to reduce noise and vibration generated when the refrigerant supplied by the compressor moves, wherein the noise reduction unit (120) comprises: a cover unit (122) with one end which is mounted to cover an upper section of the first inlet (118a) from a point corresponding to the first inlet (118a), and another end which extends from the first inlet (118a) in a diagonal direction to a corner section of the heat exchanger unit (110) to form a refrigerant flow path (124); a connecting hole (123) formed at the other end of the cover unit (122) so that the refrigerant flows in the refrigerant flow path (124); and two partition walls (126) which are shaped to project from an inner surface of the cover unit (122) on both sides of the cover unit (122) into the refrigerant flow path (124) in the direction of one side of the heat exchanger unit (110) and to extend along a longitudinal direction of the cover unit (122) to form a respective separate space (S) on both sides of the refrigerant flow path (124); wherein the partition walls (126) are formed with a respective reduction hole (128) which connects the refrigerant flow path (124) and the corresponding space (S). [2] The heat exchanger (100) according to claim 1, wherein the reduction hole (128) is formed along a longitudinal direction of the partition (126) so that the refrigerant flowing through the refrigerant flow path (124) flows into the space (S). [3] The heat exchanger (100) according to claim 1, wherein a plurality of reducing holes (128) are formed at intervals along the longitudinal direction of the corresponding partition (126). [4] A heat exchanger (200) for a vehicle, which is provided between a compressor and an expansion valve in an air conditioning system in which a refrigerant is circulated, comprising: a heat exchanger unit (210) which has a first flow path (214) and a second flow path (216) in an internal section in which the refrigerant condenses through a heat exchange between the refrigerant flowing through the first flow path (214) and a working fluid flowing through the second flow path (216); a first and a second inlet (218a, 218b) which are formed on one side of the heat exchanger unit (210) to introduce the refrigerant and the working fluid into the inner section respectively, and which are each connected to the corresponding first and second flow paths (214, 216); a first and a second outlet (219a, 219b) which are formed on another side of the heat exchanger unit (210) and are each connected to the corresponding first and second flow paths (214, 216) in order to discharge the refrigerant and the working fluid that have flowed through the heat exchanger unit (210); and a noise reduction unit (220) which is provided on one side of the heat exchanger unit (210) corresponding to the first inlet (218a) into which the refrigerant flows, in order to reduce noise and vibration generated when the refrigerant supplied by the compressor moves, wherein the noise reduction unit (220) comprises: a cover plate (221) which is mounted on one side of the heat exchanger unit (210) and is shaped to project from a point corresponding to the first inlet (218a) towards a corner section of the heat exchanger unit (210) in order to form a refrigerant flow path (224) in a projection (222); a connecting hole (223) which is formed on the projection (222) on the opposite side of the first inlet (218a), so that the refrigerant flows in the refrigerant flow path (224); and two partition walls (226) which are shaped to project on an inner surface of the projection (222) on both sides of the projection (222) into the refrigerant flow path (224) in the direction of one side of the heat exchanger unit (210) and to extend along a longitudinal direction of the projection (222) to form a respective separate space (S) on both sides of the refrigerant flow path (224), wherein the partition walls (226) are formed with a respective reduction hole (228) which connects the refrigerant flow path (224) and the corresponding space (S). [5] The heat exchanger (200) according to claim 4, wherein the cover plate (221) is formed with a hole which is connected to the first inlet (218a) by corresponding to the first inlet (218a), is formed with a further hole which is connected to the second inlet (218b) by corresponding to the second inlet (218b), and is stacked on one side of the heat exchanger unit (210). [6] A heat exchanger (300) for a vehicle, which is provided between a compressor and an expansion valve in an air conditioning system in which a refrigerant is circulated, comprising: a heat exchanger unit (310) which has a first flow path (314) and a second flow path (316) in an internal section in which the refrigerant condenses through a heat exchange between the refrigerant flowing through the first flow path (314) and a working fluid flowing through the second flow path (316); a first and a second inlet (318b) which are formed on one side of the heat exchanger unit (310) to introduce the refrigerant and the working fluid into the inner section respectively, and which are each connected to the corresponding first and second flow path (316); a first and a second outlet (319b), which are formed on another side of the heat exchanger unit (310) and are each connected to the corresponding first and second flow paths (314, 316) to discharge the refrigerant and working fluid that have flowed through the heat exchanger unit (310); and a noise reduction unit (320) which is provided on one side of the heat exchanger unit (310) corresponding to the first inlet (318a) into which the refrigerant flows, in order to reduce noise and vibration generated when the refrigerant supplied by the compressor moves, wherein the noise reduction unit (320) comprises: a cover plate (321) which is mounted on one side of the heat exchanger unit (310) and is shaped to project from a point corresponding to the first inlet (318a) towards a corner section of the heat exchanger unit (310) in order to form a refrigerant flow path (324) in a projection (322); a connecting hole (323) formed on the projection (322) on the opposite side of the first inlet (318a), so that the refrigerant flows in the refrigerant flow path (324); and an upper cover (326) which is mounted longitudinally on the upper section of the projection (322) to form a space (S) with the projection (322), wherein the projection (322) is formed with a reduction hole (328) which connects the refrigerant flow path (324) and the space (S). [7] The heat exchanger (300) according to claim 6, wherein the cover plate (321) is formed with a hole which is connected to the first inlet (318a) by corresponding to the first inlet (318a), is formed with a further hole which is connected to the second inlet (318b) by corresponding to the second inlet (318b), and is stacked on one side of the heat exchanger unit (310). [8] The heat exchanger (100, 200, 300) according to any one of claims 1, 4 and 6, wherein the heat exchanger unit (110, 210, 310) is plate-shaped with a plurality of stacked plates (112, 212, 312).

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