JP2015087045A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger capable of suppressing a tube from deforming as a scattering stone etc., hits.SOLUTION: A heat exchanger 1 includes a protection plate 3 which is a member having a plurality of through hole parts 312 formed to allow an external fluid to pass, and provided overlapping a core part 2 in the passing direction of the external fluid. The protection plate 3 has a plurality of leg parts 33 projecting respectively from a tube opposite surface 310 opposed to a tube 20 toward the tube 20. A tip part 331 of a leg part 33 is positioned on a surface of the tube 20 at least in contact with or facing a corner part 201 in a rectangular cross-sectional shape. A gap which is equal to or larger than a projection length of the leg part 33 is formed between the tube opposite surface 310 of the protection plate 3 and the tube 20.

Description

  The present invention relates to a heat exchanger that performs heat exchange between an internal fluid that circulates inside a tube and an external fluid that circulates outside the tube.

  Conventionally, heat exchangers that take measures against flying objects such as pebbles (stepping stones, etc.) are known. For example, in Patent Document 1, the impact caused by the collision of a stepping stone is not necessarily input horizontally from the tube width direction to the tube of the heat exchanger, and may be input from diagonally downward or diagonally upward. It is described that there is. For this reason, in the prior art of Patent Document 1, in order to improve the strength against stepping stones, the flat tubular tube is formed such that the thickness of the wall in the height direction increases toward the end in the width direction. .

JP 2010-65989 A

  According to the above prior art, the strength of the tube is improved by increasing the thickness of the wall in the height direction of the tube toward the end in the width direction of the tube. However, when the collision energy when the stepping stone collides with the tube is large, an impact exceeding the strength of the tube may occur, and the tube may be deformed.

  In addition, since the end of the tube in the height direction is thicker than the center, the corner located at the end in the height direction is more resistant to external impacts, but the center is more external than the corner. Sensitive to impact. Therefore, when a stepping stone collides with the central portion in the height direction of the tube, there is a problem that the tube may be deformed and the performance of the heat exchanger is reduced.

  Then, this invention is made | formed in view of the said subject, The objective is to provide the heat exchanger which can suppress the deformation | transformation of the tube by the collision of a flying object.

  The present invention employs the following technical means to achieve the above object. In addition, the code | symbol in the parenthesis as described in a claim and each following means shows the correspondence with the specific means as described in embodiment mentioned later as one aspect.

One of the disclosed inventions includes a core portion (2) configured to include a plurality of tubes (20) each having a rectangular cross-sectional shape and through which an internal fluid flows, and the internal fluid and the plurality of tubes. The invention relates to a heat exchanger (1) in which heat is exchanged with an external fluid that circulates outside,
A member in which a plurality of through-hole portions (312) through which an external fluid passes is formed, and includes a protective member (3; 103; 203) provided to overlap the core portion in the direction of passage of the external fluid,
The protective member has a plurality of legs (33; 133) that protrude from the tube facing surface (310) facing the tube toward the tube, respectively.
The leg is provided on the surface of the tube at a position where it contacts or faces at least a corner (201) of a rectangular cross-sectional shape,
A gap equal to or greater than the protruding length of the leg portion is formed between the tube facing surface of the protective member and the tube.

  According to the present invention, the heat exchange function is ensured by including the plurality of through-hole portions through which the external fluid passes, and the protective member laminated and installed on the core portion in the passage direction of the external fluid. It is possible to prevent a direct collision of the flying object coming to the part with the core part. Furthermore, the protective member and the tube of the core portion are installed with a gap equal to or longer than the protruding length of the leg portion due to the presence of a plurality of leg portions protruding from the tube facing surface of the protective member, and the leg portion is At least a position corresponding to a corner portion of the outer shape of the tube. For this reason, for example, even if a flying object such as pebbles collides with the protective member and the protective member deforms or vibrates so that it protrudes toward the core part, the portion where the protective member is deformed or the like is caused by the gap. Contact with the core portion can be reduced. Further, for example, even if the leg portion of the protective member gives an impact to the tube, the portion that receives the impact is a corner portion of the tube having a high strength, and therefore the deformation of the tube can be suppressed.

  In this way, the impact of flying objects on the core portion of the heat exchanger is absorbed by the protective member, and the deformation of the tube can be suppressed. Therefore, according to the disclosed invention, it is possible to provide a heat exchanger that suppresses deformation of the tube due to collision of flying objects.

It is the front view which showed the outline | summary structure of the heat exchanger of 1st Embodiment. It is the front view which showed the state which removed the protection plate from the heat exchanger shown in FIG. It is the front view which showed the protection plate of 1st Embodiment. It is the elements on larger scale for demonstrating the relationship between the protection plate and core part in 1st Embodiment. As a comparative example, it is the elements on larger scale for demonstrating the relationship between a protection plate and a core part. It is the elements on larger scale for demonstrating the relationship between the protection plate and core part in 2nd Embodiment. It is the elements on larger scale for demonstrating the relationship between the protection plate and core part in 3rd Embodiment. It is the schematic which showed the 1st example in the case of installing the heat exchanger of each embodiment in a vehicle. It is the schematic which showed the 2nd example in the case of installing the heat exchanger of each embodiment in a vehicle. It is the schematic which showed the 3rd example in the case of installing the heat exchanger of each embodiment in a vehicle. It is the schematic which showed the 4th example in the case of installing the heat exchanger of each embodiment in a vehicle. It is the schematic which showed the 5th example in the case of installing the heat exchanger of each embodiment in a vehicle. It is the schematic which showed the 6th example in the case of installing the heat exchanger of each embodiment in a vehicle.

  A plurality of modes for carrying out the present invention will be described below with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. Not only combinations of parts that clearly show that combinations are possible in each embodiment, but also a combination of the embodiments even if they are not clearly shown unless there is a problem with the combination. It is also possible.

(First embodiment)
The heat exchanger 1 which concerns on 1st Embodiment is demonstrated using FIGS. The heat exchanger 1 of the first embodiment includes a core part 2 that exchanges heat between an internal fluid and an external fluid, a tank part 5 in which the internal fluid is divided into a plurality of tubes 20 and collected from the plurality of tubes 20, and a core And a protective plate 3 provided so as to overlap the portion 2. The heat exchanger 1 can be mounted on a vehicle, for example.

  The core portion 2 has a rectangular cross-sectional shape, and includes a plurality of tubes 20 through which an internal fluid flows. The core portion 2 is a portion where heat exchange is performed between the internal fluid and the external fluid that flows outside the plurality of tubes 20. In the core portion 2, a plurality of tubes 20 each having a flat cross-sectional shape are arranged at a predetermined interval.

  Fins 21 are interposed between adjacent tubes 20. The fins 21 are integrally joined to the adjacent tubes 20. Each fin 21 is a member that increases the heat transfer area, and is, for example, a corrugated fin. Therefore, the core part 2 is configured by arranging a plurality of tubes 20 and fins 21 alternately stacked in the vertical direction, and these are integrally formed by brazing or the like. Further, the fin 21 may be provided with a louver shape such as a cut-and-raised portion, a convex portion, and a concave portion in order to increase the contact area with the external fluid and expand the heat transfer area.

  The tank portions 5 are provided at both ends of the core portion 2 in the left-right direction. A core plate that joins and supports the ends of all the tubes 20 is disposed on both side portions of the core portion 2 in the left-right direction. A tank portion 5 is integrally coupled to each core plate. The internal space of each tank unit 5 communicates with the inside of all the tubes 20. That is, each tank part 5 of both ends communicates with the tube 20. Each tank portion 5 is a cylindrical body extending in a direction (vertical direction) orthogonal to the longitudinal direction of the tube 20. Each tank part 5 can be molded with a resin having excellent heat resistance, such as polyamide fiber.

  Further, side plates 22 are provided on both side portions of the core portion 2 in the vertical direction, that is, on the outer sides of the fins 21 positioned on the outermost sides of the upper and lower portions. The side plate 22 is a reinforcing member that reinforces the core portion 2. For example, the side plate 22 can be a U-shaped member that extends in the longitudinal direction of the tube 20.

  One of the tank parts 5 on both sides is integrally formed with an inflow pipe into which an internal fluid flows, a fixing boss part 6 for fixing to a member on the vehicle body side, and the like. The other tank portion 5 is integrally formed with an outflow pipe through which the internal fluid flows out, a fixing boss portion 6 for fixing with a member on the vehicle body side, and the like. Moreover, in the heat exchanger 1, each member, such as the tube 20, the fin 21, the core plate, and the side plate 22 of the core portion 2, is formed of, for example, aluminum or an aluminum alloy, and these members are integrated by brazing. It is joined.

  Next, the configuration of the protection plate 3 will be described with reference to FIG. The protective plate 3 is provided so as to overlap the core portion 2 in the direction in which the external fluid passes. The protection plate 3 is a member including a plate-like portion 31 in which a plurality of through-hole portions 312 are formed. The protective plate 3 can be formed of a metal such as aluminum or an aluminum alloy, for example. Further, the protective plate 3 can be molded into a predetermined shape with a hard resin material using a molding die.

  The protection plate 3 is provided with fixing portions 30 for fixing to the frame member including the tank portion 5 of the heat exchanger 1 at both ends in the (left-right direction vehicle width direction). Each fixing portion 30 is formed with two holes having a size through which the shaft portion of the bolt can be inserted. The protective plate 3 can be attached to the front portion of the heat exchanger 1 by bolting each fixing portion 30 to the frame member.

  An external fluid that contacts the fins 21 passes through the through-hole portion 312. The through hole portion 312 is a rectangular opening located in front of the fin 21 so as to correspond to the fin 21. Therefore, the plurality of through-hole portions 312 are provided in the plate-like portion 31 of the protection plate 3 so as to be arranged at a predetermined interval in the direction (vertical direction) in which the tank portion 5 extends. The through-hole portion 312 is an opening over almost the entire length in the left-right direction (length in the vehicle width direction) of the core portion 2.

  A space between the through-hole portions 312 aligned in the vertical direction in the plate-like portion 31 corresponds to a plate-like blindfold portion that covers the front of the core portion 2, that is, the front of the tube 20. Therefore, the blindfolds and the through hole portions 312 are alternately arranged in the vertical direction. The protective plate 3 is a protective member that can protect the front surface of the core portion 2 at a portion of the plate-like portion 31 excluding the through hole portion 312.

  Furthermore, the protective plate 3 is provided with a reinforcing ridge portion 32 that protrudes forward from the front surface of the blind portion in the plate-like portion 31. The protective plate 3 is provided with a plurality of ridge portions 32 having a predetermined length that protrude from the blindfold portion and are arranged at predetermined intervals in a direction (vertical direction) in which the tank portion 5 extends. The ridge portion 32 is provided over substantially the entire length in the left-right direction (length in the vehicle width direction) of the core portion 2. According to this, the some protruding item | line part 32 has an effect which raises the rigidity of the protection plate 3, and has a function which raises the intensity | strength of the left-right direction especially.

  As shown in FIG. 3, the protection plate 3 further includes a plurality of leg portions 33 that protrude toward the tube 20 from the tube facing surface 310 of the plate-like portion 31 facing the tube 20. The tip portion 331 of the leg portion 33 is provided on the surface of the tube 20 at a position where it contacts or faces at least the corner portion 201 of the rectangular cross section of the tube 20.

  As described above, the distal end portion 331 is provided at a position where at least the tube 20 can contact or contact the corner portion 201. In other words, the leg portion 33 contacts at least the corner portion 201 of the tube 20 or is slightly separated from the corner portion 201 of the tube 20 in a state where the protective plate 3 is mounted on the heat exchanger 1. . Therefore, a gap equal to or greater than the protruding length of the leg portion 33 is formed between the tube facing surface 310 of the protective plate 3 and the tube 20. The gap is set to 2 mm or more, for example.

  With this configuration, when an external force acts on the surface opposite to the tube facing surface 310 (front surface) with respect to the protective plate 3, the plate-like portion 31 is pushed toward the core portion 2 side. The contact portion of the tube 20 or the facing portion of the tube 20 is pushed. The distal end portion 331 is in a position where it contacts or faces the corner portion 201 of the tube 20, but it is sufficient if it is in such a positional relationship with the corner portion 201, and also contacts with a portion other than the corner portion 201 in the tube 20. Or may be in a position to face. Further, the leg portion 33 is provided with a predetermined length over almost the entire length in the longitudinal direction of the tube 20 in the flow direction of the fluid (internal fluid) in the tube 20. Moreover, the form by which the some leg part 33 is provided at intervals over the whole longitudinal direction length of the tube 20 may be sufficient.

  The leg portion 33 or the tip portion 331 is formed such that the vertical thickness dimension F thereof is equal to or greater than the vertical thickness dimension T of the tube 20. With this configuration, the tip 331 can contact or face at least the corner 201 having a high strength, and can also contact or face a portion other than the corner 201 in the tube 20. Therefore, since the tube 20 can receive an external force from the leg portion 33 at the corner portion 201 having a high strength, the tube 20 is not easily deformed even if it is in contact with a portion other than the corner portion 201.

  Further, the leg portion 33 may not necessarily be in contact with the tube 20 in a state where the protective plate 3 is mounted on the heat exchanger 1. Furthermore, it is preferable that the front-end | tip part 331 exists in the position which does not contact the center part 200 located between the corner | angular parts 201, or the position which does not face. The corner portion 201 is strong against an external force acting in the direction in which the leg portion 33 protrudes (the ventilation direction in the figure), and the central portion 200 is thinner than the corner portion 201 in the protruding direction of the leg portion 33. It is because it is weak.

  When a flying object such as a stepping stone collides with the front surface of the protection plate 3, as shown by a two-dot chain line in FIG. 4, the plate-like portion 31 is bent by vibration or deformed so as to be recessed toward the core portion 2. Since a predetermined gap is formed between the plate-like portion 31 and the tube 20 due to the presence of the leg portion 33, the portion of the plate-like portion 31 that vibrates or dents toward the core portion 2 side is the tube. 20 is difficult to contact. For this reason, as shown in FIG. 4, it is possible to avoid a situation in which the central portion 200 having a low strength is deformed due to the vibration or depression of the protective plate 4 as in the comparative example shown in FIG.

  Further, the distal end portion 331 of the leg portion 33 comes into contact with the tube 20 and gives an external force. The distal end portion 331 always contacts the corner portion 201 excellent in strength. According to such a positional relationship of each part, the effect which suppresses deformation | transformation of the tube 20 can be show | played.

  For example, the heat exchanger 1 can be applied to a radiator. Below, the example which applied the heat exchanger 1 to the radiator is demonstrated. The radiator is mounted, for example, in an engine compartment of a vehicle, and is disposed adjacent to each other in a posture in which a condenser, which is a heat exchanger provided in an air conditioning refrigeration cycle of the vehicle, and a core portion face each other. The radiator is arranged behind the condenser or on the downstream side of the air flow.

  The condenser and the radiator are integrally assembled with an electric fan as a blower that forcibly blows air (external fluid) that exchanges heat with the fluid flowing inside at both core portions, and is mounted on the vehicle in this state. . As described above, the condenser, the radiator, and the electric fan are integrally assembled to constitute a cooling module. Air (outside air) is blown to the condenser and the radiator in the direction of the arrow (rear of the vehicle) by the electric fan, and both are cooled by the blown air. The radiator is a heat exchanger connected to a coolant circuit of a vehicle engine, and cools high-temperature coolant that has been absorbed by the engine and has risen in temperature.

  The radiator is provided with a shroud made of a resin material such as polypropylene. The shroud forms the air guide portion of the fan with a shape that smoothly inclines from the outer peripheral portion on the radiator side, which is formed in a rectangular shape so as to follow the outer shape of the radiator, toward the non-radiator side (rear side of the vehicle). The shroud has a shallow bowl shape so as to cover the electric fan as a whole, and is integrally fixed to the radiator by bolting or the like. A motor of an electric fan is attached to a motor attachment portion formed on the shroud. When the shroud, the radiator, and the condenser are integrated to form a cooling module, the air supplied from the electric fan passes through each core portion in the order of the condenser and the radiator from the front of the vehicle to cool the internal fluid. Furthermore, the air passes through the air guide portion formed by the shroud and is discharged.

  About such a radiator, it is preferable to attach the protective plate 3 to the front surface of the core part. As described above, the protection plate 3 can contribute to protecting the core portion of the radiator and suppressing deformation of the tube from flying objects such as pebbles flying at high speed toward the radiator while the vehicle is running.

  Next, the effect which the heat exchanger 1 of 1st Embodiment brings is described. The heat exchanger 1 has a rectangular cross section, and includes a core portion 2 including a plurality of tubes 20 through which an internal fluid flows. The heat exchanger 1 circulates between the internal fluid and the plurality of tubes 20. Exchanges heat with external fluid. The heat exchanger 1 is a member in which a plurality of through-hole portions 312 through which an external fluid passes is formed, and includes a protective plate 3 provided to overlap the core portion 2 in the direction in which the external fluid passes.

  The protection plate 3 has a plurality of leg portions 33 that protrude from the tube facing surface 310 facing the tube 20 toward the tube 20. The leg 33 is provided on the surface of the tube 20 at a position where it contacts or faces at least the corner 201 having a rectangular cross section. Between the tube facing surface 310 of the protection plate 3 and the tube 20, a gap equal to or greater than the protruding length of the leg portion 33 is formed.

  According to this configuration, by providing the protective plate 3 having a plurality of through-hole portions 312 and stacked with the core portion 2 in the direction in which the external fluid passes, the heat exchange function is secured and the protective plate 3 faces the core portion 2. It is possible to prevent a direct collision of incoming flying objects with the core portion 2. Further, the protection plate 3 and the tube 20 are installed with a gap equal to or greater than the protruding length of the leg 33 due to the presence of the plurality of legs 33 protruding from the tube facing surface 310 of the protection plate 3, and the leg 33 is It is at a position corresponding to at least the corner portion 201 of the tube 20. For this reason, for example, even if a flying object such as pebbles collides with the protection plate 3 and the protection plate 3 is deformed or vibrates so as to protrude toward the core portion 2, the deformation of the protection plate 3 is caused by the gap. It can reduce that the equal part contacts the core part 2.

  Furthermore, for example, even if the leg portion 33 of the protective plate 3 gives an impact to the tube 20, the portion receiving the impact is the corner portion 201 having a high strength, so that the deformation of the tube 20 can be suppressed. Thus, the impact due to flying objects on the core portion 2 of the heat exchanger 1 can be absorbed by the protective plate 3 and deformation of the tube 20 can be suppressed.

  Further, the leg portion 33 contacts or faces both of the two corner portions 201 at a position facing the tube facing surface 310 with respect to the tube 20. According to this configuration, when an external force is applied to the protective plate 3, the load that acts on the tube 20 by the legs 33 can be dispersed. Thereby, the local stress which the tube 20 receives can be reduced, and it can contribute to suppression of a deformation | transformation of the tube 20. FIG.

  In addition, the protective plate 3 is provided with a plurality of ridges 32 protruding from the surface opposite to the tube facing surface 310 (the front surface of the protective plate 3). According to this configuration, the rigidity of the protection plate 3 can be strengthened by the plurality of ridge portions 32. By strengthening the rigidity of the protection plate 3, even if the opening area of the through-hole portion 312 is increased, the deflection of the protection plate 3 due to vibration can be suppressed. Therefore, even when a flying object collides, the vibration and deformation of the protective plate 3 can be suppressed. Therefore, the deformation of the tube 20 and the like can be suppressed, and the performance deterioration of the heat exchanger 1 can be prevented.

(Second Embodiment)
In 2nd Embodiment, the protection plate 103 which is another form of 1st Embodiment is demonstrated with reference to FIG. In FIG. 6, the same components as those in the first embodiment are denoted by the same reference numerals and have the same operations and effects. The configuration, operation, and effects not particularly described in the second embodiment are the same as those in the first embodiment. Only differences from the first embodiment will be described below. Moreover, what has the structure similar to 1st Embodiment in 2nd Embodiment shall show | play the same effect | action and effect demonstrated in 1st Embodiment.

  As shown in FIG. 6, the leg portion 33 of the protection plate 103 contacts or faces either one of the two corner portions 201 at a position facing the tube facing surface 310 with respect to the tube 20. Therefore, according to the protection plate 103, if the strength and gap are secured so as not to deform the tube 20 without contact with the plate-like portion 31 due to vibration, deformation, etc. due to collision of flying objects, The number of leg portions 33 can be reduced.

(Third embodiment)
In 3rd Embodiment, the protection plate 203 which is the other form of 1st Embodiment is demonstrated with reference to FIG. In FIG. 7, components having the same configuration as in the first embodiment are denoted by the same reference numerals, and exhibit similar operations and effects. The configuration, operation, and effects not particularly described in the third embodiment are the same as those in the first embodiment. Only differences from the first embodiment will be described below. Moreover, what has the structure similar to 1st Embodiment in 3rd Embodiment shall show | play the same effect | action and effect demonstrated in 1st Embodiment.

  As shown in FIG. 7, the protective plate 203 is characterized by the shape of the distal end portion 1331 of the leg portion 133. The tip portion 1331 is formed in a shape that follows the outer shape of the corner portion 201. That is, the tip portion 1331 has a tip shape that follows the curved shape of the surface of the corner portion 201. According to the protection plate 203 of the third embodiment, the contact area between the surface of the distal end portion 1331 and the outer surface of the tube 20 increases in a state where the distal end portion 1331 contacts the tube 20, so that the leg portion 133 is connected to the tube 20. The external force applied to the can be dispersed. In addition, since the contact area between the surface of the distal end portion 1331 and the corner portion 201 of the tube 20 is increased, external force can be reliably received by the corner portion 201 having high strength, and the flat portion of the thin tube 20 is deformed. Can provide a difficult structure.

(Vehicle installation example of a heat exchanger having a protective member)
The heat exchanger demonstrated by said embodiment can be installed in the vehicle 7 like the example shown in FIGS.

(First installation example)
For example, the heat exchanger 1 can be applied to the intercooler 8. As shown in FIG. 8, the protection plates 3, 103, 203 (hereinafter collectively referred to as protection plate 3) can be provided on the front surface 80 side of the intercooler 8 in the vehicle 7. Therefore, the internal fluid flowing through the plurality of tubes 20 in the intercooler 8 is air that rises in temperature by being compressed by the supercharger mounted on the vehicle 7.

  The protective plate 3 is provided so as to be positioned behind the grill 71 having an air intake opening formed at the front end of the hood of the vehicle 7. The outside air taken in from the grill 71 passes through the plurality of through-hole portions 312 in the protective plate 3 and the fins 21 of the intercooler 8 in this order, so that the supercharged air and heat that are internal fluids are passed through the fins 21 and the tubes 20. Replace to cool the supercharged air.

  The intercooler 8 is mounted, for example, in the engine compartment of the vehicle 7 and is disposed adjacent to each other in a posture in which the condenser 9 provided in the air conditioning refrigeration cycle of the vehicle 7 and the core portion face each other. The condenser 9 is disposed behind the intercooler 8 or on the downstream side of the air flow. Moreover, the radiator 10 is arrange | positioned rather than the capacitor | condenser 9 in the vehicle back side or the downstream of the airflow. Therefore, the intercooler 8, the capacitor 9, and the radiator 10 are installed in the front portion 70 of the vehicle 7 so as to be stacked in this order toward the rear of the vehicle.

  Thus, the protection plate 3 is provided so as to cover the front surface 80 through which the external fluid passes in the core portion 2 of the intercooler 8 mounted on the front portion 70 of the vehicle 7. According to this configuration, the tube 20 of the intercooler 8 can be reliably protected from a stepping stone or the like entering from the air intake opening of the front portion 70 during traveling. Therefore, according to the first installation example, it is possible to provide the vehicle 7 that can continuously exhibit the traveling performance without deteriorating the supercharged air cooling performance.

(Second installation example)
In the second installation example, the heat exchanger 1 is applied to the intercooler 8 as in the first installation example. As shown in FIG. 9, in the second installation example, the capacitor 9 and the radiator 10 stacked toward the rear of the vehicle are installed above the intercooler 8. Further, the protective plate 3 may be provided on the front side of the capacitor 9 located behind the grill 71 of the vehicle 7. The protection plate 3 is located behind the grill 71 of the vehicle 7.

(Third installation example)
In the third installation example, the heat exchanger 1 is applied to the intercooler 8 as in the first installation example. As shown in FIG. 10, the intercooler 8 is provided around the wheel 72 of the vehicle 7. The protection plate 3 is provided not only on the front surface 80 side of the intercooler 8 but also on the rear surface 81 side.

  The outside air taken in from the grill 71 sequentially passes through the plurality of through-hole portions 312 in the protection plate 3 provided on the front surface 80 side and the fins 21 of the intercooler 8, and further on the protection plate 3 provided on the rear surface 81 side. It passes through the through-hole portion 312 and is discharged. During this time, the outside air exchanges heat with the air that is the internal fluid via the fins 21 and the tubes 20 to cool the supercharged air.

  The protection plate 3 is provided so as to cover the rear surface 81 (external fluid passage surface) located on the wheel 72 side in the core portion 2 provided around the wheel 72 of the vehicle 7. According to this configuration, the tube 20 of the intercooler 8 is moved forward from the pebbles, mud, etc. that are levitated to the tire house of the wheel 72 in addition to the stepping stones that enter from the air intake opening of the front part 70 during traveling. It can protect reliably in a part and a rear part. Therefore, according to the third installation example, it is possible to provide the vehicle 7 that can continuously exhibit the traveling performance without deteriorating the supercharged air cooling performance.

(Fourth installation example)
In the fourth installation example, the heat exchanger 1 is applied to the intercooler 8 as in the first installation example. As shown in FIG. 11, the intercooler 8 is provided above the engine, for example. The protective plate 3 is provided so as to be positioned behind the air intake duct 73 provided in the hood of the vehicle 7.

  The outside air taken in from the duct portion 73 passes through the plurality of through-hole portions 312 in the protective plate 3 and the fins 21 of the intercooler 8 in this order, so that the supercharged air that is the internal fluid passes through the fins 21 and the tubes 20. Heat exchange is performed to cool the supercharged air.

(Fifth installation example)
In the fifth installation example, the heat exchanger 1 can be applied to the condenser 9. As shown in FIG. 12, the protection plate 3 can be provided on the front side of the capacitor 9 in the vehicle 7. The protection plate 3 is provided so as to be positioned behind the grill 71 of the vehicle 7. The radiator 10 is arranged behind the condenser 9 on the vehicle rear side or the downstream side of the air flow. Therefore, the protective plate 3, the capacitor 9, and the radiator 10 are installed in the front portion 70 of the vehicle 7 so as to be stacked in this order toward the rear of the vehicle.

  The outside air taken in from the grill 71 passes through the plurality of through-hole portions 312 in the protective plate 3 and the fins 21 of the condenser 9 in this order, whereby the air-conditioning refrigerant and heat, which are internal fluids, pass through the fins 21 and the tubes 20. Replace and cool the refrigerant. Further, the outside air passes around the tube of the radiator 10 to exchange heat with the engine coolant that is an internal fluid, thereby cooling the engine coolant.

  According to the fifth installation example, the tube 20 of the capacitor 9 can be reliably protected from a stepping stone or the like entering from the air intake opening of the front portion 70 during traveling. Therefore, it is possible to provide the vehicle 7 that can continuously exhibit the air conditioning performance without deteriorating the refrigerant cooling performance.

(Sixth installation example)
In the sixth installation example, the heat exchanger 1 can be applied to the radiator 10. As shown in FIG. 13, the protection plate 3 can be provided on the front side of the radiator 10 in the vehicle 7. The protection plate 3 is provided so as to be positioned behind the grill 71 of the vehicle 7. Therefore, the protection plate 3 and the radiator 10 are installed in the front part 70 of the vehicle 7 so that it may be laminated | stacked toward the vehicle rear in this order.

  The outside air taken in from the grill 71 passes through the plurality of through-hole portions 312 in the protective plate 3 and the fins 21 of the radiator 10 in this order, and exchanges heat with engine coolant, which is an internal fluid, via the fins 21 and the tubes 20. To cool the engine coolant. According to the sixth installation example, the tube 20 of the radiator 10 can be reliably protected from a stepping stone or the like entering from the air intake opening of the front portion 70 during traveling. Therefore, it is possible to provide the vehicle 7 that can continuously exhibit the running performance without deteriorating the engine cooling water cooling performance.

(Other embodiments)
In the above-described embodiment, the preferred embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. It is. The structure of the said embodiment is an illustration to the last, Comprising: The scope of the present invention is not limited to the range of these description. The scope of the present invention is indicated by the description of the scope of claims, and further includes meanings equivalent to the description of the scope of claims and all modifications within the scope.

  The heat exchanger of the above embodiment has a configuration in which the left-right direction is the flow direction of the internal fluid and the tank portions 5 are provided at both ends of the core portion 2 in the left-right direction, but is not limited to this configuration. The heat exchanger included in the invention may have a configuration in which the vertical direction is the flow direction of the internal fluid and the tank portions 5 are provided at both ends of the core portion 2 in the vertical direction.

  Each tube 20 in the above embodiment may be formed with a plurality of protrusions protruding from the outer surface or inner surface thereof. According to the plurality of protrusions, the heat transfer area can be increased.

  The protective plate 3 in the above embodiment is provided with a reinforcing ridge 32 protruding forward from the front surface, but is not limited to this configuration. The heat exchanger included in the invention may have a configuration in which the protective plate 3 does not have the reinforcing protrusions 32 for reinforcement.

DESCRIPTION OF SYMBOLS 1 ... Heat exchanger 3,103,203 ... Protection plate (protection member)
20 ... Tube 33,133 ... Leg 201 ... Corner 310 ... Tube facing surface 312 ... Vent hole (through hole)

Claims (7)

An outer portion that has a rectangular cross-sectional shape and includes a core portion (2) that includes a plurality of tubes (20) through which an internal fluid flows, and that circulates between the internal fluid and the plurality of tubes. A heat exchanger (1) for exchanging heat with a fluid,
A member in which a plurality of through-hole portions (312) through which the external fluid passes is formed, and includes a protection member (3; 103; 203) provided to overlap the core portion in the passage direction of the external fluid;
The protective member has a plurality of legs (33; 133) that protrude from the tube facing surface (310) facing the tube toward the tube, respectively.
The leg is provided on the surface of the tube at a position that contacts or faces at least the corner (201) of the rectangular cross-sectional shape,
A gap equal to or greater than the protruding length of the leg portion is formed between the tube facing surface of the protection member and the tube.   2. The heat exchanger according to claim 1, wherein the leg portion contacts or faces both of the two corner portions at a position facing the tube facing surface with respect to the tube.   The said protective member is provided in the said core part mounted in the front part (70) of a vehicle (7) so that the front surface (80) through which the said external fluid passes may be covered. The heat exchanger as described in.   The heat exchanger according to claim 3, wherein the internal fluid is air that rises in temperature by being compressed by a supercharger mounted on the vehicle.   The said protection member is provided in the said core part provided in the circumference | surroundings of the wheel (72) of a vehicle (7) so that the external fluid passage surface (81) located in the said wheel side may be covered. The heat exchanger according to 1 or 2.   The heat exchanger according to any one of claims 1 to 5, wherein a tip portion (1331) of the leg portion is formed in a shape that follows the outer shape of the corner portion.   The said protection member is provided with the several protruding item | line part (32) which protrudes from the surface on the opposite side to the said tube opposing surface, It is any one of Claim 1 to 6 characterized by the above-mentioned. Heat exchanger.

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