JP2018071948A - Heat exchange module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchange module which can preferably inhibit occurrence of assembly failure of a cooling fan.SOLUTION: A heat exchange module 1 includes a restriction protrusion part 33 which is provided at a connection part between a shroud ring part 31 of a fan shroud 30 and a shroud wind guide part 32 so as to protrude to a space between a blade 52 of a cooling fan 50 and a core part 11 of a radiator 10 and restricts the blade 52 from moving closer to the core part 11 beyond a predetermined position. The restriction protrusion part 33 is formed in a color different from the fan shroud 30.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to a heat exchange module including a cooling fan and a fan shroud in a heat exchanger.

  Conventionally, a heat exchanger and a suction-type cooling fan that is arranged in parallel to the heat exchanger and blows cooling air to the core part of the heat exchanger and the cooling fan are accommodated, and the cooling air passes through the core part. A heat exchange module including a fan shroud that conducts air in such a manner is known.

  This heat exchange module is mainly mounted on a vehicle, and when the vehicle travels under a high water surface such as a submerged road in a submerged state, water may reach the cooling fan through the heat exchanger. At this time, if the cooling fan is operating, the cooling fan is deformed to the heat exchanger side by the driving force of the cooling fan, interferes with the core part of the heat exchanger, and damages the core part. It may cause vehicle malfunctions such as cooling water leakage from the exchanger, damage to the cooling fan, and overheating. In Patent Document 1, in order to prevent the cooling fan from interfering with the core part of the heat exchanger and damaging the core part, there is a restricting protrusion protruding between the cooling fan and the core part of the heat exchanger. A configuration is described that is provided directly below the rotation axis of the cooling fan and functions as a stopper that suppresses deformation of the cooling fan.

JP 2009-109103 A

  Here, as described in Patent Document 1, a conventional heat exchange module uses a type of cooling fan in which tips of a plurality of blades (blades) are connected by ring-shaped connecting portions (ring portions). There is a case. In this case, in the configuration in which the regulation protrusion (stopper portion) described in Patent Document 1 is provided, when the cooling fan is replaced in the market, an operator overlooks the presence of the stopper portion. There is a possibility that the part and the stopper part interfere with each other and the cooling fan is assembled in a deformed state.

  An object of this indication is to provide the heat exchange module which can suppress suitably generation | occurrence | production of the assembly | attachment malfunction of a cooling fan.

  The present disclosure includes a heat exchanger (10) in which a heat exchange medium flows inside a core part (11), and a plurality of blades (52) arranged in a rotation direction, and is arranged in parallel with the core part. An axial-flow type cooling fan (50) that generates cooling air to flow through the outside of the core portion and cool the heat exchange medium from the core portion side to the cooling fan side direction (B). A cooling fan, a fan shroud (30) disposed to face the core part, a cylindrical housing part (31) for housing the cooling fan, and extending from the housing part to the core part side, A fan-shaped shroud having a duct-shaped air guiding portion (32) for guiding cooling air to pass through the core portion, and the blade and the core of the cooling fan in the housing portion or the air guiding portion. Projecting between the And a restricting protrusion (33) for restricting the proximity of the door to the core part rather than a predetermined position, wherein the restricting protrusion is formed in a color different from that of the fan shroud. It is.

  With this configuration, it is possible to improve the visibility of the restriction protrusion with respect to the fan shroud. Therefore, in the process of assembling the cooling fan to the fan shroud, the worker is likely to notice the presence of the restricting protrusion, and also easily notices the state where the cooling fan and the restricting protrusion are interfering with each other. Thereby, generation | occurrence | production of the cooling fan assembly | attachment malfunction which is a condition where a cooling fan is assembled in the state which interfered with the control protrusion part can be suppressed suitably.

  According to the present disclosure, it is possible to provide a heat exchange module that can suitably suppress the occurrence of a cooling fan assembly defect.

FIG. 1 is a front view of the heat exchange module according to the embodiment. FIG. 2 is a cross-sectional view taken along the line II-II shown in FIG. 1, and is a cross-sectional view illustrating a schematic configuration of the heat exchange module according to the embodiment. FIG. 3 is a diagram for explaining an assembly failure that may occur in the assembly process of the conventional heat exchange module.

  Hereinafter, the present embodiment will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  With reference to FIG.1 and FIG.2, the structure of the heat exchange module 1 which concerns on this embodiment is demonstrated. As shown in FIG.1 and FIG.2, the heat exchange module 1 consists of the radiator 10 and the electric blower 20, and shall cool the cooling water of the engine for motor vehicles. The heat exchange module 1 is mounted on the front side of the traveling direction of the vehicle with respect to the engine in a vehicle engine room (not shown). The radiator 10 and the electric blower 20 are juxtaposed along the traveling direction, and the radiator 10 is installed on the front side in the traveling direction with respect to the electric blower 20. The electric blower 20 is installed on the engine side (the rear side in the traveling direction) of the radiator 10.

  Regarding the above traveling direction, the back side of the paper in FIG. 1 is the front side, the front side of the paper surface is the rear side, the right side of the paper surface in FIGS. 2 and 3 is the front side, and the left side of the paper surface is the rear side. In the following description, the vertical direction in FIGS. 1 to 3 will be described as the vertical direction.

  As shown in FIG. 2, the radiator 10 (heat exchanger) includes a core portion 11 whose outer shape is formed in a rectangular shape by arranging a plurality of tubes so that the longitudinal direction of the tubes faces the vertical direction. This is a so-called vertical flow type radiator in which both ends in the longitudinal direction of the tube are connected to a pair of tanks, that is, an upper tank and a lower tank. In FIG. 2, only the core portion 11 of the radiator 10 is shown, and the upper tank and the lower tank are not shown.

  In the radiator 10, here, cooling water (heat exchange medium) from the engine flows in from the upper tank, flows in the tube of the core portion 11 from the upper side to the lower side in FIGS. 1 and 2, and flows out from the lower tank. And then it comes back to the engine. In addition, the flow direction of the cooling water in the radiator 10 is not limited to this configuration.

  As shown in FIGS. 1 and 2, the electric blower 20 mainly includes a fan shroud 30, an electric motor 40, and a cooling fan 50. The electric blower 20 is attached to the fan shroud 30 so that the rotation axis of the cooling fan 50 faces the horizontal direction. The cooling air is blown to the core portion 11 of the radiator 10. The electric blower 20 is a so-called suction type electric blower that sucks blown air from the vehicle grill side toward the engine side, that is, from the core portion 11 of the radiator 10 to the fan shroud 30 side.

  The fan shroud 30 has a rectangular outline corresponding to the core portion 11 of the radiator 10, and is made of, for example, a polypropylene resin material containing glass fiber, and is integrally formed by injection molding. The fan shroud 30 is disposed to face the core portion 11 of the radiator 10. The fan shroud 30 of the electric blower 20 is installed with the core portion 11 of the radiator 10 so that one side of the rectangular outer shape faces the installation surface.

  The fan shroud 30 includes a stepped cylindrical shroud ring portion 31 (accommodating portion) at a portion that becomes the outer periphery of the cooling fan 50. A cylindrical motor holding portion (not shown) is formed at the center of the shroud ring portion 31, and the motor holding portion extends radially and is connected to the shroud ring portion 31. (Not shown). The shroud ring portion 31 accommodates the cooling fan 50 in the fan shroud 30 so as to be rotatable.

  A duct-shaped shroud air guide portion 32 (air guide portion) is formed between the shroud ring portion 31 and the outer peripheral edge portion of the shroud 30 on the core portion 11 side of the radiator 10, and is sucked by the cooling fan 50. The air flow is efficiently guided over the entire area of the core portion 11 of the radiator 10. A restricting projection 33 is formed on the inner side surface of the connection portion between the shroud ring portion 31 and the shroud air guide portion 32.

  The electric motor 40 is, for example, a ferrite type DC motor, and a ferrite magnet as a stator is fixed to an inner peripheral surface of a cylindrical housing forming a main body, and an armature (coil) as a rotor is further provided inside the electric motor 40. It is mounted so that it can rotate. The electric motor 40 is fixed to the motor holding part of the fan shroud 30.

  The cooling fan 50 is an axial flow type in which a plurality of blades 52 extending radially away from each other are formed in the circumferential direction of the boss portion 51 having a flat bottomed cylindrical shape (rotation direction A centering on the rotation axis). Is a fan of The outer peripheral end portions (outer side tip portions) 521 of the plurality of blades 52 are connected to each other by a ring portion 53 formed in a circumferential shape to form a so-called ring fan.

  The cooling fan 50 is made of, for example, a polypropylene resin material containing nylon or glass fiber, and a boss portion 51, a blade 52, and a ring portion 53 are integrally formed. The cooling fan 50 is accommodated (enclosed) inside the shroud ring portion 31 of the fan shroud 30, fixed to the rotating shaft of the electric motor 40, and rotated by the electric motor 40. That is, the cooling fan 50 is arranged in parallel with the core portion 11 of the radiator 10, and the cooling air for circulating the outside of the core portion 11 and cooling the cooling water inside is directed from the core portion 11 side to the cooling fan 50 side. B.

  The ring portion 53 of the cooling fan 50 has a cylindrical shape extending parallel to the rotation shaft 511 with the rotation shaft 511 as an axis, and a cylindrical portion 531 whose inner peripheral side surface is connected to the outer peripheral end 521 of each blade 52, and the cylindrical portion 531. This is constituted by an expanding portion 532 extending from the side portion of the radiator 10 so as to expand radially outward over the entire circumference.

  Further, a step portion 311 of the shroud ring portion 31 is disposed at a position on the vehicle rear side of the expanding portion 532 of the ring portion 53. That is, the expansion part 532 of the cooling fan 50 protrudes between the restriction projection part 33 and the step part 311 of the fan shroud 30. Therefore, when the cooling fan 50 is displaced to the vehicle rear side, the cooling fan 50 cannot be displaced to the vehicle rear side from the step portion 311 of the shroud ring portion 31.

  The above-described restricting protrusion 33 is formed in a radially inward direction (a direction toward the rotation axis) from a connection portion (end portion on the core portion 11 side of the shroud ring portion 31) between the shroud ring portion 31 of the fan shroud 30 and the shroud air guide portion 32. Protruding. For example, the restricting protrusion 33 is formed in a thin plate shape having the same thickness as the other portions of the fan shroud 30 and has a substantially rectangular shape. For example, as shown in FIG. 2, the restricting protrusion 33 is provided in a region below the rotation shaft 511 of the cooling fan 50.

  The restriction protrusion 33 is provided so as to protrude between the blade 52 and the ring portion 53 of the cooling fan 50 and the core portion 11 of the radiator 10. As described above, when a vehicle on which the heat exchange module 1 is mounted travels on a road surface with a high water level such as a flooded road in a submerged state, water may reach the cooling fan 50 through the radiator 10. At this time, if the cooling fan 50 is operating, the blade 52 receives a propulsive force when passing through the water, and the propulsive force causes the centrifugal end portion of the blade 52 and the ring portion 53 to become the core. Deforms to the part 11 side (front side in the traveling direction). When the blade 52 and the ring portion 53 of the cooling fan 50 are deformed, the restriction protrusion 33 restricts the blade 52 and the ring portion 53 from being closer to the core portion 11 than a predetermined position. it can.

  Incidentally, the fan shroud 30 and the cooling fan 50 that are mainly formed of a resin material in the electric blower 20 are generally intentionally formed in black so as not to stand out in the engine room. In order to produce this black color, carbon is often mixed with the material. In addition, by mixing carbon, it is possible to improve the appearance and to obtain the effect of suppressing ultraviolet deterioration. Conventionally, the restricting protrusion 33 is often formed integrally with the fan shroud 30, and therefore the restricting protrusion 33 is also formed in black like the fan shroud 30 and the cooling fan 50. It is common. Here, when the regulation protrusion 33 is formed in black like the fan shroud 30 and the cooling fan 50, there is a possibility that a problem may occur when the cooling fan 50 is assembled to the fan shroud 30. This problem will be described with reference to FIG.

  Consider a process of assembling the cooling fan 50 to the fan shroud 30 in the assembly process of the heat exchange module 1. In this step, as shown in FIG. 3A, the cooling fan 50 is assembled to the shroud ring portion 31 from the shroud air guide portion 32 side of the fan shroud 30. At this time, since the restricting projection 33 projects from the shroud air guide 32, when the cooling fan 50 is assembled along the axial direction, the ring 53 expands as shown in FIG. The part 532 comes into contact with the restricting protrusion 33, and the part of the expanded part 532 that has received the interference of the restricting protrusion 33 does not enter the position where it contacts the step 311 of the shroud ring 31. .

  However, even when a part of the expanded portion 532 of the ring portion 53 interferes with the restricting protrusion 33 in this manner, the restricting protrusion 33 is the same black as the fan shroud 30 and the cooling fan 50 as shown in FIG. In this case, the worker does not notice this interference or does not notice the presence of the restricting projection 33 in the first place, and the electric motor 40 is installed on the cooling fan 50 from the opposite side, and there is a problem in the assembly. May complete the assembly process. When there is such an assembly failure, the cooling fan 50 cannot sufficiently rotate, and thus the radiator 10 cannot be sufficiently cooled by the electric blower 20 and may cause overheating.

  As a means for solving such a problem, in the heat exchange module 1 of the present embodiment, as shown in FIG. 2, the restriction projection 33 is formed in a color different from that of the fan shroud 30. With this configuration, the visibility of the restriction projection 33 with respect to the fan shroud 30 can be improved. Therefore, in the process of assembling the cooling fan 50 to the fan shroud 30, it becomes easier for an operator to notice the presence of the restricting protrusion 33, and the ring portion 53 of the cooling fan 50 and the restricting protrusion 33 interfere with each other. It becomes easy to notice. Thereby, generation | occurrence | production of the assembly | attachment malfunction of the cooling fan 50 which is the condition where the cooling fan 50 is assembled in the state which interfered with the control protrusion 33 can be suppressed suitably.

  Further, the color difference between the restricting protrusion 33 and the fan shroud 30 will be further described. The fan shroud 30 is formed in black, whereas the restricting protrusion 33 is formed in a lighter color than black. Moreover, it is preferable that the regulation projection part 33 is formed in any one color of white, yellow, and red. With this configuration, the visibility of the restricting protrusion 33 with respect to the fan shroud 30 can be further improved, and the presence of the restricting protrusion 33 can be more surely noticed by the worker in the assembling process. Generation can be further suppressed.

  The present embodiment has been described above with reference to specific examples. However, the present disclosure is not limited to these specific examples. Those in which those skilled in the art appropriately modify the design of these specific examples are also included in the scope of the present disclosure as long as they have the features of the present disclosure. Each element included in each of the specific examples described above and their arrangement, conditions, shape, and the like are not limited to those illustrated, and can be changed as appropriate. Each element included in each of the specific examples described above can be appropriately combined as long as no technical contradiction occurs.

  In the above embodiment, the fan shroud 30 and the cooling fan 50 are formed in black, and the restricting protrusion 33 is formed in a lighter color (white, yellow, or red) than black. If the color is different from the colors of the fan shroud 30 and the cooling fan 50, other colors may be applied.

1: Heat exchange module 10: Radiator (heat exchanger)
11: Core part 30: Fan shroud 31: Shroud ring part (accommodating part)
32: Shroud wind guide section (wind guide section)
33: Restriction protrusion 50: Cooling fan 52: Blade

Claims (3)

A heat exchanger (10) in which a heat exchange medium flows inside the core (11);
An axial-flow type cooling fan (50) having a plurality of blades (52) arranged in a rotation direction and arranged in parallel with the core part, wherein the heat exchange is performed through the outside of the core part A cooling fan that generates cooling air for cooling the medium in the direction (B) from the core part side to the cooling fan side;
A fan shroud (30) disposed opposite to the core part, the cylindrical containing part (31) accommodating the cooling fan, and the cooling air extending from the accommodating part toward the core part side. A fan shroud having a duct-shaped air guiding portion (32) for guiding air so as to pass through the portion;
A restricting protrusion that is provided so as to protrude between the blade of the cooling fan and the core portion at the housing portion or the air guide portion, and restricts the blade from being closer to the core portion than a predetermined position. (33)
With
The restriction protrusion is formed in a color different from that of the fan shroud.
Heat exchange module (1). The fan shroud is formed of black,
The regulation protrusion is formed in a lighter color than black,
The heat exchange module according to claim 1. The regulation protrusion is formed of any one of white, yellow, and red.
The heat exchange module according to claim 2.

Images