Heat exchanger having inlet pipe inserted therein

Abstract

Disclosed is a heat exchanger having an inlet pipe inserted therein. A heat exchanger having an inlet pipe inserted therein according to one aspect of the present invention has a plurality of plates arranged stacked together and has separate flow paths for different heat exchange fluids. The heat exchanger may be provided with an inlet pipe inserted in an inlet region that is formed as communication holes provided in the plates and fluidly communicating with each other.

Description

Heat exchanger with inserted inlet pipe

[0001] The present invention relates to a heat exchanger, and more particularly, to a heat exchanger having an inlet pipe inserted therein.

[0002] In general, electric vehicles cool electrical components such as the drive motor for driving the vehicle, high-voltage junction box (HV J / BOX), motor controller (MCU: Motor Control Unit) including inverter, power converter (LDC: Low Voltage DC / DC Converter), and other various controllers and high-voltage components to prevent heat damage and maintain durability. Water cooling using coolant is usually applied.

[0003] Furthermore, in electric vehicles, prolonged use of the battery generates heat. This heat generation, particularly during charging, rapidly increases the internal temperature of the battery. This temperature rise shortens the battery's lifespan and prevents it from operating optimally. Therefore, water-cooling is used to prevent heat damage and maintain battery durability.

[0004] Among these conventional heat exchangers, in the case of a heat exchanger in which multiple plates are stacked, a fluid is introduced from one side of the height direction of the inflow area and then flows to a heat transfer area arranged along the height direction, thereby exchanging heat with another fluid.

[0005] However, when configured in this manner, the fluid flowing in from one side of the inflow area in the height direction moves to the heat transfer area without flowing to the other side in the height direction, so the heat transfer area cannot be used uniformly, which causes a problem of reduced cooling performance.

[0006] Therefore, there is a need for improvement in this regard.

[0007] The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to provide a heat exchanger having an inlet pipe inserted therein, which can secure sufficient cooling performance even when fluid is introduced to one side in the height direction of the inlet area in a state where a plurality of plates are stacked and arranged.

[0008] The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0009] According to one aspect of the present invention, in a heat exchanger in which a plurality of plates are stacked and each plate has a flow path for a different heat exchange fluid, a heat exchanger is provided in which an inlet pipe is inserted into an inlet region formed by mutual fluid communication between communication holes provided in the plates.

[0010] At this time, a heat transfer area in which the introduced fluid exchanges heat is formed in the heat exchanger, and the inlet pipe can provide a path so that the introduced fluid moves to a position spaced apart from one end of the height direction of the inlet area by a predetermined distance and then flows radially outward to the heat transfer area.

[0011] At this time, the inflow area is formed with a first length along the height direction, and the insertion depth at which the inflow pipe is inserted into the inflow area can be formed to have a range of 10% to 50% of the first length.

[0012] At this time, the inlet pipe may include a body extending in the height direction to be inserted into the inlet region, and a flange disposed at one end of the body in the height direction and extending radially outward.

[0013] At this time, the heat exchanger may be provided with a first inlet port to allow fluid to flow into the inlet region, and an inner surface of the first inlet port may be provided with a mounting surface extending radially inward to allow the flange to be mounted thereon.

[0014] At this time, the body may be provided with an extension slit extending along the height direction so that some of the fluid moving from one end of the body to the other end in the height direction moves radially outward and flows outward of the body.

[0015] At this time, a plurality of extension slits may be provided along the circumference of the body.

[0016] At this time, the flange may be provided with an outer inlet hole communicating with the radially outer side of the inlet area so that fluid flows into the outer surface of the body, and an inner inlet hole communicating with the radially inner side of the inlet area so that fluid flows into the inner surface of the body.

[0017] At this time, the flange is provided with a partition wall extending circumferentially so that the outer inlet hole and the inner inlet hole are mutually partitioned, and the body can be arranged to extend in the height direction from the partition wall.

[0018] At this time, the inlet pipe may further include an auxiliary body extending in the height direction so that the fluid introduced through the outer inlet hole moves from one end in the height direction to the other end along the outer surface of the body and then flows radially outward to the heat transfer area.

[0019] At this time, the insertion depth of the auxiliary body may be formed to be smaller than the insertion depth of the body.

[0020] At this time, the flange is provided with a first inlet hole communicating with one radial side of the inlet area, and a second inlet hole communicating with the other radial side of the inlet area, and the inlet pipe may further include an extension body extending in the height direction so that a fluid introduced through one of the first and second inlet holes moves a relatively longer distance in the height direction than a fluid introduced through the other inlet hole and then flows radially outward to the heat transfer area.

[0021] According to the above configuration, a heat exchanger having an inlet pipe inserted according to one aspect of the present invention is formed by having a plurality of plates stacked and arranged so that the inlet pipe is inserted into the inlet region formed by the mutual fluid communication between the communication holes provided in each plate, so that even if a fluid is introduced to one side of the inlet region in the height direction, the introduced fluid flows to the heat transfer region in a state of being uniformly distributed along the height direction, thereby ensuring sufficient cooling performance.

[0022] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0023] FIG. 1 is a perspective view illustrating a heat exchanger with an inlet pipe inserted according to one embodiment of the present invention.

[0024] Figure 2 is a cross-sectional view of part Ⅰ-Ⅰ of Figure 1.

[0025] FIG. 3 is a perspective view illustrating an inlet pipe provided in a heat exchanger with an inlet pipe inserted therein according to one embodiment of the present invention.

[0026] FIG. 4 is a perspective view illustrating various sizes of inlet pipes provided in a heat exchanger into which an inlet pipe is inserted according to one embodiment of the present invention, and each of (a) to (e) is a drawing illustrating an embodiment in which the body of the inlet pipe is sequentially formed longer.

[0027] FIG. 5 is a graph showing a change rate in cooling performance of a heat exchanger with an inlet pipe inserted according to one embodiment of the present invention, and is a graph showing a comparison of a change rate in cooling performance of a heat exchanger with an inlet pipe inserted and a heat exchanger without an inlet pipe inserted.

[0028] FIG. 6 is a graph showing a change rate in cooling performance of a heat exchanger with an inlet pipe inserted according to one embodiment of the present invention, and is a graph showing a change rate in cooling performance of the heat exchanger according to the insertion depth of the inlet pipe.

[0029] FIG. 7 is an enlarged cross-sectional view of an inlet pipe portion of a heat exchanger into which an inlet pipe is inserted according to one embodiment of the present invention.

[0030] FIG. 8 is a perspective view illustrating a first modified example of an inlet pipe provided in a heat exchanger into which an inlet pipe is inserted according to one embodiment of the present invention.

[0031] Figure 9 is a cross-sectional view of part II-II of Figure 8.

[0032] FIG. 10 is a perspective view illustrating a second modified example of an inlet pipe provided in a heat exchanger into which an inlet pipe is inserted according to one embodiment of the present invention.

[0033] Fig. 11 is a cross-sectional view of part Ⅲ-Ⅲ of Fig. 10.

[0034] FIG. 12 is a perspective view illustrating a third modified example of an inlet pipe provided in a heat exchanger into which an inlet pipe is inserted according to one embodiment of the present invention.

[0035] Fig. 13 is a cross-sectional view of part IV-IV of Fig. 12.

[0036] FIG. 14 is a perspective view illustrating a fourth modified example of an inlet pipe provided in a heat exchanger with an inlet pipe inserted according to one embodiment of the present invention.

[0037] Fig. 15 is a cross-sectional view of part V-V of Fig. 14.

[0038] FIG. 16 is a perspective view illustrating a fifth modified example of an inlet pipe provided in a heat exchanger into which an inlet pipe is inserted according to one embodiment of the present invention.

[0039] Fig. 17 is a cross-sectional view of part Ⅵ-Ⅵ of Fig. 16.

[0040] Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, parts irrelevant to the description are omitted in the drawings, and the same reference numerals designate identical or similar components throughout the specification.

[0041] The words and terms used in this specification and claims should not be construed as limited to their ordinary or dictionary meanings, but should be interpreted in a way that is consistent with the technical idea of ​​the present invention, in accordance with the principles by which the inventor can define terms and concepts in order to best explain his or her invention.

[0042] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings correspond to a preferred embodiment of the present invention, and do not represent all of the technical ideas of the present invention, so there may be various equivalents and modified examples that can replace the configuration at the time of filing of the present invention.

[0043] In this specification, terms such as “include” or “have” are intended to describe the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood not to exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0044] FIG. 1 is a perspective view illustrating a heat exchanger with an inlet pipe inserted according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of part I-I of FIG. 1, and FIG. 3 is a perspective view illustrating an inlet pipe provided in a heat exchanger with an inlet pipe inserted according to an embodiment of the present invention. Here, the Z direction is the height direction and means the direction in which a fluid flows in or out, the R direction means the radial direction, and the A direction means the circumferential direction. In order to clearly explain the present invention, parts that are not related to the explanation are omitted from the drawings.

[0045] As shown in FIGS. 1 to 3, a heat exchanger (1) having an inlet pipe (100) inserted according to one embodiment of the present invention is a heat exchanger (1) in which a plurality of plates (10) are stacked and each has a flow path for a different heat exchange fluid formed therein, and the heat exchanger (1) is provided with an inlet pipe (100) inserted into an inlet zone (IZ) formed by mutual fluid communication between communication holes (11) provided in the plates (10).

[0046] Such a plate (10) may be provided with at least one communication hole (11), and when a plurality of plates (10) are stacked, the communication holes are in fluid communication with each other, thereby forming a flow path through which different heat exchange fluids, such as refrigerant or cooling water, can flow and exchange heat. In addition, end plates may be arranged on one side and the other side in the height direction (Z) of the heat exchanger (1), respectively.

[0047] Such a heat exchanger (1) may be provided with a first inlet port (20) through which refrigerant flows in and a first outlet port (30) through which refrigerant flows out, and may be provided with a second inlet port (40) through which cooling water flows in and a second outlet port (50) through which cooling water flows out. However, the fluids flowing in and out of each inlet port and outlet port are not limited to refrigerant and cooling water, and various types of fluids may be used to exchange heat with each other as long as they are different heat exchange fluids.

[0048] In the heat exchanger (1), an inlet zone (IZ) is formed in which the interconnecting holes (11) provided in the plate (10) are fluidically connected to each other, and the fluid introduced through the first inlet port (20) moves to this inlet zone (IZ). The fluid that has moved to the inlet zone (IZ) moves to the heat transfer zone (HZ) described later, exchanges heat with another heat exchange fluid, and then moves to the outlet zone (DZ) and flows out to the outside.

[0049] At this time, an inlet pipe (100) is inserted and placed inside the inlet zone (IZ) through which the fluid introduced through the first inlet port (20) flows, and the introduced fluid moves to a position spaced a predetermined distance from one end in the height direction (Z) of the inlet zone (IZ) through the inlet pipe (100) and then moves to the heat transfer zone (HZ) to exchange heat with another heat exchange fluid.

[0050] That is, when a plurality of plates (10) are stacked and arranged, and the interconnecting holes (11) provided in each plate (10) are fluidly connected to each other, an inflow pipe (100) is inserted into the inflow area (IZ), so that even if fluid flows into one side of the height direction (Z) of the inflow area (IZ), the introduced fluid flows to the heat transfer area (HZ) in a uniformly distributed state along the height direction (Z), thereby ensuring sufficient cooling performance.

[0051] As illustrated in Fig. 2, a heat exchanger (1) has a heat transfer area (HZ) formed where the introduced fluid exchanges heat, and an inlet pipe (100) can provide a path so that the introduced fluid moves to a position spaced apart from one end of the inlet area (IZ) in the height direction (Z) by a predetermined distance and then flows outward in the radial direction (R) to the heat transfer area (HZ).

[0052] That is, the inflowing fluid is not introduced from one end in the height direction (Z) of the inflow area (IZ), but is introduced to a position spaced a predetermined distance from one end in the height direction (Z) of the inflow area (IZ) through the inflow pipe (100), so that it is evenly distributed toward one end and the other end in the height direction (Z) and then moves outward in the radial direction (R) to the heat transfer area (HZ), thereby improving cooling performance.

[0053] FIG. 4 is a perspective view showing various sizes of inlet pipes provided in a heat exchanger into which an inlet pipe is inserted according to an embodiment of the present invention, wherein (a) to (e) are drawings each showing an embodiment in which the body of the inlet pipe is sequentially formed longer, FIG. 5 is a graph showing a change rate in cooling performance of a heat exchanger into which an inlet pipe is inserted according to an embodiment of the present invention, and is a graph comparing the change rate in cooling performance of a heat exchanger into which an inlet pipe is not inserted and a heat exchanger into which an inlet pipe is inserted, and FIG. 6 is a graph showing a change rate in cooling performance of a heat exchanger into which an inlet pipe is inserted according to an embodiment of the present invention, and is a graph showing a change rate in cooling performance of the heat exchanger according to the insertion depth of the inlet pipe.

[0054] As illustrated in FIG. 4, the inlet pipe (100) inserted into the heat exchanger (1) can be configured to have various sizes along the height direction (Z), thereby allowing the insertion depth at which the inlet pipe (100) is inserted within the inlet area (IZ) to be variously adjusted. FIG. 4 (a) to (e) illustrate inlet pipes (100) inserted at insertion depths (DT) of 10%, 25%, 35%, 50%, and 75% of the first length (L1), which is the length in the height direction (Z) of the inlet area (IZ).

[0055] For example, the change rate of cooling performance of a heat exchanger in which an inlet pipe (100) is not inserted into the inlet zone (IZ) and a heat exchanger in which an inlet pipe (100) is inserted are compared as shown in FIG. 5. At this time, the cooling water conditions are that the inlet cooling water temperature is 20°C, and the cooling water flow rate is changed to 10 lpm (liter per minute), 16 lpm, 25 lpm, and 33 lpm. In addition, the refrigerant conditions are that the expansion valve (TXV) inlet pressure is 14.9 kgf / cm2, the expansion valve (TXV) inlet temperature is 52°C, the refrigerant pressure flowing out of the heat exchanger (1) is 2.2 kgf / cm2, and the superheat degree is 7 deg. In addition, an inlet pipe (100) is used in which the insertion depth (DT) is inserted by 25% of the first length (L1), which is the length in the height direction (Z) of the inlet zone (IZ), as shown in FIG. 4 (b).

[0056] When the inlet pipe (100) is inserted into the heat exchanger (1) under the above cooling water and refrigerant conditions, it can be confirmed that the cooling performance increases by about 30% compared to a heat exchanger in which the inlet pipe (100) is not inserted.

[0057] As illustrated in Fig. 2, the inflow area (IZ) can be formed with a first length (L1) along the height direction (Z). At this time, as illustrated in Fig. 6, when checking the cooling performance of the heat exchanger (1) according to the insertion depth (DT) of the inflow pipe (100), it can be confirmed that the cooling performance improves as the inflow pipe (100) is inserted, but the cooling performance decreases again when the insertion depth (DT) of the inflow pipe (100) exceeds a predetermined range. That is, it is preferable that the insertion depth (DT) at which the inflow pipe (100) is inserted into the inflow area (IZ) be formed to have a range of 10% to 50% of the first length (L1).

[0058] FIG. 7 is an enlarged cross-sectional view of an inlet pipe portion of a heat exchanger into which an inlet pipe is inserted according to one embodiment of the present invention.

[0059] As illustrated in FIG. 7, the inlet pipe (100) may include a body (110) extending along the height direction (Z) to be inserted into the inlet area (IZ), and a flange (120) disposed at one end of the body (110) in the height direction (Z) and extending outward in the radial direction (R).

[0060] This body (110) is extended along the height direction (Z) and guides the flow of the fluid so that the inflowing fluid flows smoothly along the height direction (Z), thereby increasing the mobility of the fluid in the height direction (Z) and enabling the fluid to be smoothly distributed to the other end in the height direction (Z) of the inflow area (IZ). In addition, the flange (120) is extended outward in the radial direction (R) so that the inflow pipe (100) can be stably fixedly arranged in the inflow area (IZ).

[0061] As illustrated in Fig. 7, the heat exchanger (1) is provided with a first inlet port (20) for fluid to be introduced into the inlet region (IZ), and a mounting surface (21) extending radially inwardly (R) may be provided on the inner surface of the first inlet port (20) so that a flange (120) is mounted thereon. At this time, as illustrated in Fig. 7, a top plate (12) may be provided at the uppermost end in the height direction (Z). The top plate (12) may be provided with an upwardly extending plate guide (12a) so that the first inlet port (20) is coupled thereto. The first inlet port (20) may be provided with a downwardly extending port rib (20a) so that the plate guide (12a) is coupled thereto. A guide mounting surface (12b) may be provided at the upper end in the height direction (Z) of the plate guide (12a) so that the lower surface of the first inlet port (20) is mounted thereon. The first inlet port (20) may be provided with a port guide surface (22) that guides the flange (120) formed with a predetermined thickness along the height direction (Z) during the process of moving downward in the height direction (Z) so that the flange (120) is seated on the seating surface (21). With this configuration, the arrangement state (fixed state) of the inlet pipe (100) can be stably maintained.

[0062] That is, the inlet pipe (100) may be fixed in a manner in which the flange (120) is fixed integrally through a brazing process while being fixed on the mounting surface (21), or in which a counterpart inserted into the inner surface of the first inlet port (20) is fixed to pressurize the flange (120).

[0063] When the flange (120) is provided in this way, not only can the position of the inlet pipe (100) be stably fixed, but also the fluid resistance that may occur due to the flange (120) during the process of fluid inflow can be minimized.

[0064] FIG. 8 is a perspective view showing a first modified example of an inlet pipe provided in a heat exchanger into which an inlet pipe is inserted according to one embodiment of the present invention, and FIG. 9 is a cross-sectional view of part II-II of FIG. 8.

[0065] As illustrated in FIGS. 8 and 9, the body (110) may be provided with an extension slit (111) extending along the height direction (Z) so that some of the fluid moving from one end of the body (110) to the other end in the height direction (Z) flows outward from the body (110) while moving outward in the radial direction (R).

[0066] That is, among the fluids moving from one end of the body (110) in the height direction (Z) to the other end, some of the fluids do not move to the other end of the body (110) but instead move outward in the radial direction (R) and flow outward of the body (110). Some of the fluids flowing outward of the body (110) perform heat exchange while moving to the heat transfer area (HZ).

[0067] By configuring it in this way, even if the fluid that has moved to the other end of the body (110) does not move from the other end in the height direction (Z) of the body (110) toward one end, some of the fluid flows to the heat transfer area (HZ), so not only can fluid resistance be minimized, but cooling performance is also improved.

[0068] FIG. 10 is a perspective view illustrating a second modified example of an inlet pipe provided in a heat exchanger into which an inlet pipe is inserted according to one embodiment of the present invention, and FIG. 11 is a cross-sectional view of part Ⅲ-Ⅲ of FIG. 10.

[0069] As illustrated in FIGS. 10 and 11, a plurality of extension slits (111) may be provided along the periphery of the body (110). With this configuration, the flow rate of some fluid that flows outward from one end of the body (110) in the height direction (Z) to the other end without moving to the other end of the body (110) and moves outward in the radial direction (R) can be controlled. At this time, the number of extension slits (111) can be adjusted to suit the flow rate of some of the fluids described above.

[0070] That is, some of the fluid moving from one end of the body (110) in the height direction (Z) to the other end does not move to the other end of the body (110) but moves outward in the radial direction (R) and flows outward of the body (110), thereby performing heat exchange while moving to the heat transfer area (HZ), and even if the fluid moving to the other end of the body (110) does not move from the other end of the body (110) in the height direction (Z) to the one end, some of the fluid flows to the heat transfer area (HZ), so that not only can fluid resistance be minimized but also cooling performance is improved.

[0071] FIG. 12 is a perspective view showing a third modified example of an inlet pipe provided in a heat exchanger into which an inlet pipe is inserted according to one embodiment of the present invention, and FIG. 13 is a cross-sectional view of part IV-IV of FIG. 12.

[0072] As shown in FIGS. 12 and 13, the flange (120) may be provided with an outer inlet hole (121) that communicates with the outer side in the radial direction (R) of the inlet area (IZ) so that fluid is introduced into the outer surface of the body (110), and an inner inlet hole (122) that communicates with the inner side in the radial direction (R) of the inlet area (IZ) so that fluid is introduced into the inner surface of the body (110).

[0073] That is, the fluid flowing into the inflow zone (IZ) moves to the inflow zone (IZ) in a separated state through the outer inflow hole (121) and the inner inflow hole (122) provided in the flange (120). With this configuration, the fluid flowing in in a separated state through the outer inflow hole (121) and the inner inflow hole (122) can move to the heat transfer zone (HZ) in an evenly distributed state, thereby minimizing fluid resistance and improving cooling performance.

[0074] As shown in FIGS. 12 and 13, the flange (120) is provided with a partition wall (123) extending in the circumferential direction (A) so that the outer inlet hole (121) and the inner inlet hole (122) are mutually partitioned, and the body (110) can be arranged to extend from the partition wall (123) in the height direction (Z).

[0075] With this configuration, the inflowing fluid is reliably distributed through the partition wall (123) and moves to the outer inflow hole (121) and the inner inflow hole (122). The fluid introduced through the outer inflow hole (121) performs heat exchange while flowing to a heat transfer area (HZ) that is connected to one side of the inflow area (IZ), and the fluid introduced through the inner inflow hole (122) performs heat exchange while flowing to a heat transfer area (HZ) that is connected to the other side of the inflow area (IZ) after moving to the other end of the body (110), thereby minimizing fluid resistance and improving cooling performance.

[0076] FIG. 14 is a perspective view showing a fourth modified example of an inlet pipe provided in a heat exchanger into which an inlet pipe is inserted according to one embodiment of the present invention, and FIG. 15 is a cross-sectional view of part V-V of FIG. 14.

[0077] As illustrated in FIGS. 14 and 15, the inlet pipe (100) may further include an auxiliary body (130) extending along the height direction (Z) so that the fluid introduced through the outer inlet hole (121) moves from one end in the height direction (Z) to the other end along the outer surface of the body (110) and then flows outward in the radial direction (R) to the heat transfer area (HZ).

[0078] That is, the inflowing fluid is reliably distributed through the partition wall (123) and moves to the outer inflow hole (121) and the inner inflow hole (122), and the fluid introduced through the outer inflow hole (121) moves in the height direction (Z) through the auxiliary body (130) and then moves outward in the radial direction (R) while flowing to the heat transfer area (HZ) to perform heat exchange, and the fluid introduced through the inner inflow hole (122) moves to the other end of the body (110) and then flows to the heat transfer area (HZ) that is connected to the other side of the inflow area (IZ) to perform heat exchange, thereby minimizing fluid resistance and improving cooling performance.

[0079] As illustrated in Fig. 15, the insertion depth of the auxiliary body (130) can be formed to be smaller than the insertion depth of the body (110). The insertion depth of the auxiliary body (130) and the insertion depth of the body (110) can be changed according to design conditions. With this configuration, the fluid introduced through the outer inlet hole (121) moves in the height direction (Z) through the auxiliary body (130) and then moves outward in the radial direction (R) to flow to the heat transfer area (HZ) to perform heat exchange, and the fluid introduced through the inner inlet hole (122) moves to the other end of the body (110) and then flows to the heat transfer area (HZ) that is connected to the other side of the inlet area (IZ) to perform heat exchange, thereby minimizing fluid resistance and improving cooling performance.

[0080] FIG. 16 is a perspective view showing a fifth modified example of an inlet pipe provided in a heat exchanger into which an inlet pipe is inserted according to one embodiment of the present invention, and FIG. 17 is a cross-sectional view of a portion Ⅵ-Ⅵ of FIG. 16.

[0081] As illustrated in FIGS. 16 and 17, the flange (120) is provided with a first inlet hole (124) communicating with one side of the inlet area (IZ) in the radial direction (R), and a second inlet hole (125) communicating with the other side of the inlet area (IZ) in the radial direction (R), and the inlet pipe (100) may further include an extension body (140) extending along the height direction (Z) so that a fluid introduced through one of the first inlet hole (124) and the second inlet hole (125) moves a relatively longer distance along the height direction (Z) than a fluid introduced through the other inlet hole and then flows outward in the radial direction (R) to the heat transfer area (HZ).

[0082] That is, the inflowing fluid is moved to the inflow area (IZ) while being reliably distributed through the first inflow hole (124) and the second inflow hole (125), and after one fluid moves a relatively longer distance in the height direction (Z) than the other fluid through the extension body (140), it flows outward in the radial direction (R) and into the heat transfer area (HZ). That is, since the positions in the height direction (Z) at which each fluid flows outward in the radial direction (R) through the body (110) and the extension body (140) can be made different, the inflowing fluid flows to the heat transfer area (HZ) while being uniformly distributed along the height direction (Z), thereby minimizing fluid resistance and improving cooling performance.

[0083] As previously discussed, the heat exchanger (1) having an inlet pipe (100) inserted according to one embodiment of the present invention is formed by the inlet pipe (100) being inserted into the inlet area (IZ) formed when the communication holes (11) provided in each plate (10) are fluidly connected to each other in a state where a plurality of plates (10) are stacked and arranged, so that even if a fluid is introduced to one side of the inlet area (IZ) in the height direction (Z), the introduced fluid flows to the heat transfer area (HZ) in a state where it is uniformly distributed along the height direction (Z), thereby ensuring sufficient cooling performance.

[0084] Although one embodiment of the present invention has been described, the spirit of the present invention is not limited to the embodiments presented in this specification, and those skilled in the art who understand the spirit of the present invention will be able to easily propose other embodiments by adding, changing, deleting, or adding components within the scope of the same spirit, but this will also be considered to fall within the spirit of the present invention.

[0085] [Explanation of symbols]

[0086] 1: Heat exchanger 10: Plate

[0087] 11: Flue port 20: First inlet port

[0088] 21: Settling surface 30: First outlet port

[0089] 40: Second inlet port 50: Second outlet port

[0090] 100: Inlet pipe 110: Body

[0091] 111: Extension slit 120: Flange

[0092] 121: Outer inlet hole 122: Inner inlet hole

[0093] 123: Compartment bulkhead 124: First inlet hole

[0094] 125: Second inlet hole 130: Auxiliary body

[0095] 140: Extended body DZ: Outflow area

[0096] HZ: Heat transfer area IZ: Inflow area

[0097] L1: First length DT: Insertion depth

[0098] A: Circumferential direction R: Radial direction

[0099] Z: Height direction

Claims

1. In a heat exchanger in which a plurality of plates are stacked and arranged, and paths for different heat exchange fluids are formed respectively, A heat exchanger having an inlet pipe inserted therein, wherein the inlet pipe is inserted into an inlet region formed by mutual fluid communication between the interconnecting holes provided in the plate.

2. In paragraph 1, In the above heat exchanger, a heat transfer area is formed where the introduced fluid exchanges heat, A heat exchanger having an inlet pipe inserted therein, which provides a path for the incoming fluid to flow into the heat transfer area while moving radially outward after moving to a position spaced a predetermined distance from one end of the height direction of the inlet area.

3. In paragraph 2, The above inflow region is formed with a first length along the height direction, A heat exchanger having an inlet pipe inserted therein, wherein the insertion depth of the inlet pipe inserted into the inlet region is formed to be in the range of 10% to 50% of the first length.

4. In paragraph 2, The above inlet pipe, a body extending along the height direction to be inserted into the above inlet area; and A flange arranged at one end of the height direction of the above body and extending radially outward; A heat exchanger having an inlet pipe inserted therein.

5. In paragraph 4, The above heat exchanger is provided with a first inlet port to allow fluid to flow into the inlet region, A heat exchanger having an inlet pipe inserted into the inner surface of the first inlet port, the inlet pipe having a mounting surface extending radially inward so that the flange is mounted thereon.

6. In paragraph 4, A heat exchanger having an inlet pipe inserted into the body, the inlet pipe having an extension slit extending along the height direction so that some of the fluid moving from one end of the body to the other end moves radially outward and flows outward of the body.

7. In paragraph 6, A heat exchanger in which a plurality of inlet pipes are inserted along the circumference of the body through the above-mentioned extension slits.

8. In paragraph 4, A heat exchanger having an inlet pipe inserted into the flange, the inlet pipe having an outer inlet hole communicating with the radially outer side of the inlet area so that fluid is introduced into the outer surface of the body, and an inner inlet hole communicating with the radially inner side of the inlet area so that fluid is introduced into the inner surface of the body.

9. In paragraph 8, The above flange is provided with a partition wall extending circumferentially so that the outer inlet hole and the inner inlet hole are mutually partitioned, The above body is a heat exchanger having an inlet pipe inserted therein, which extends in the height direction from the above partition wall.

10. In paragraph 9, A heat exchanger having an inlet pipe inserted therein, wherein the inlet pipe further includes an auxiliary body extending in the height direction so that the fluid introduced through the outer inlet hole moves from one end in the height direction to the other end along the outer surface of the body and then flows radially outward to the heat transfer area.

11. In paragraph 10, A heat exchanger in which an inlet pipe is inserted, the insertion depth of the auxiliary body being formed smaller than the insertion depth of the body.

12. In paragraph 4, The above flange is provided with a first inlet hole communicating with one radial side of the inlet area, and a second inlet hole communicating with the other radial side of the inlet area. A heat exchanger having an inlet pipe inserted therein, wherein the inlet pipe further includes an extension body extending in the height direction so that a fluid introduced through one of the first inlet hole and the second inlet hole moves a relatively longer distance in the height direction than a fluid introduced through the other inlet hole and then flows radially outward to the heat transfer area.

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