JP2009299925A - Fixing structure of heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure of a heat exchanger, easily fixing the heat exchanger without a bracket. <P>SOLUTION: In this fixing structure of the heat exchanger, a condenser 2 is fixed to a radiator 1. The condenser 2 includes a pair of header tanks 2a, 2b disposed at a predetermined space and a core part 2c disposed between the paired header tanks 2a, 2b. The radiator 1 includes a pair of tanks 1a, 1b disposed at a predetermined space and a core part 1c disposed between the paired tanks 1a, 1b. The respective tanks 1a, 1b of the radiator 1 are respectively formed of resin, and a locking part 4a locked to the condenser 2 by elastic force of resin to fix the condenser 2 is integrally formed at both longitudinal ends of the respective tanks 1a, 1b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heat exchanger fixing structure.

2. Description of the Related Art Conventionally, a technology for fixing a heat exchanger in which upper, lower, left and right ends of a capacitor are fixed to a radiator via a resin bracket is known (see Patent Document 1).
JP 2005-186780 A JP 2007-85616 A

However, in the conventional invention, since it is necessary to fix the capacitor to the radiator after mounting the resin bracket on the capacitor, there is a problem that it takes time to mount.
Therefore, it is conceivable that the resin bracket is made of aluminum and is integrally formed with the capacitor. In this case, however, the brazing performance of the capacitor is reduced, and the weight is increased and the burden on the radiator is increased.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a heat exchanger fixing structure capable of easily fixing a heat exchanger without using a bracket. .

  In the invention according to claim 1, in the heat exchanger fixing structure in which the first heat exchanger is fixed to the second heat exchanger, the pair of tanks in which the first heat exchanger is arranged at a predetermined interval. And a core portion disposed between the pair of tanks, wherein the second heat exchanger is disposed at a predetermined interval with a pair of tanks disposed between the pair of tanks. Each tank of the second heat exchanger is made of resin, and the first heat is engaged with the first heat exchanger by elastic force of the resin at both longitudinal ends of the tanks. A locking portion capable of fixing the exchanger is integrally formed.

In the first aspect of the present invention, each tank of the second heat exchanger is formed of resin, and the first heat exchanger is engaged with the first heat exchanger at both ends in the longitudinal direction of the tank by the elastic force of the resin. A locking portion capable of fixing the first heat exchanger is integrally formed.
Thereby, a heat exchanger can be easily fixed without using a bracket.

  Embodiments of the present invention will be described below with reference to the drawings.

Example 1 will be described below.
The vehicle front-rear direction and the vehicle width direction will be described as the front-rear direction and the left-right direction.
1 is a front view showing an assembled state of a capacitor and a radiator according to the first embodiment, FIG. 2 is a sectional view taken along line S2-S2 of FIG. 1, FIG. 3 is a front view of the radiator according to the first embodiment, and FIG. FIG. 5 is a cross-sectional view taken along the line S5-S5 of FIG. 4.
6 is a front view of the capacitor according to the first embodiment, FIG. 7 is an exploded view of the header tank of the capacitor according to the first embodiment, FIG. 8 is a perspective view thereof, and FIG. 9 is a perspective view of the reinforcement according to the first embodiment. 12 is a diagram illustrating fixing of the capacitor and the radiator according to the first embodiment.

First, the overall configuration will be described.
As shown in FIG. 1, in the invention of the first embodiment, a radiator 1 (corresponding to the second heat exchanger in the claims) and a condenser 2 assembled in front of the radiator 1 (the first heat exchanger in the claims) Equivalent).

As shown in FIGS. 2 and 3, the radiator 1 is composed of a pair of tanks 1a and 1b disposed at a predetermined interval in the vertical direction, and a core portion 1c disposed between the tanks 1a and 1b. ing.
Each tank 1a, 1b is made of a resin and is formed in a substantially container shape opened to the core 1c side, and the outer periphery of the opening end is fixed by caulking to a substantially dish-shaped tube plate 1e via a sealing member 1d. The inside is sealed.
On the rear surface of the tank 1a, a cylindrical input port 1f communicating with the inside of the tank 1a is projected rearward. On the rear surface of the tank 1b, a cylindrical output port 1g communicating with the inside of the tank 1b is provided. Projected backwards.
In addition, columnar vehicle mounting pins 1h are provided in the vertical direction at the left and right ends of the tanks 1a and 1b.

Furthermore, a fixed portion 3 to the capacitor 2 side is integrally formed at the left and right ends of each tank 1a, 1b.
Specifically, as shown in FIG. 2, the fixing portions 3 of the tanks 1a and 1b are vertically symmetrical, and as shown in FIGS. 4 and 5, tongues protruding forward from the front surfaces of the tanks 1a and 1b. It is composed of a single plate-like locking portion 4a and rectangular guide portions 4b, 4c protruding forward from the left and right sides of the locking portion 4a.
Further, the inside of the front end of the locking portion 4a is formed in a shape protruding inwardly, and a notch hole 4d that is notched inwardly is formed at the top of the angle.

  The guide parts 4b and 4c are provided in a state of protruding forward by a predetermined dimension L1 from the locking part 4a, and the dimension L2 between the guide parts 4b and 4c is the same value as the lateral width of the tank body 5 described later. Is set to

The core portion 1c includes a plurality of flat tubular tubes 1i whose both ends are inserted and fixed to the corresponding tube plates 1e, and corrugated plate-like fins 1j whose corrugated tops are joined to the adjacent tubes 1i. Has been.
Further, both sides of the core portion 1c in the stacking direction are connected and reinforced by a reinforcement 1k in which both end portions are inserted and fixed to the corresponding tube plates 1e.

  The core portion 1c of the radiator 1 is made entirely of aluminum including the reinforcement 1k, and a brazing material (brazing sheet) is provided on at least one of the joint portions of each constituent member. By being heat-treated in the assembled state, each joint is brazed and joined.

As shown in FIG. 6, the capacitor 2 is disposed between a pair of header tanks 2a and 2b (corresponding to the claims) and a pair of header tanks 2a and 2b. It consists of a core portion 2c and the like.
The header tank 2a is divided into three chambers R1, R3, R6 by four divider plates 2d, and is provided with an input connector 2f having an input port 2e in communication with the chamber R1, while communicating with the chamber R6. In this state, an output connector 2h having an output port 2g is provided.
The header tank 2b is divided into three chambers R2, R4, and R5 by four divider plates 2d, and is provided with a receiver tank 2k that communicates with the chambers R4 and R5 via connecting pipes 2i and 2j.

More specifically, as shown in FIGS. 7 and 8, the tank body 5 of each of the header tanks 2a and 2b is in a state of interposing a semi-cylindrical divided body 5a having a substantially U-shaped cross section and each divider plate 2d. The semi-cylindrical divided body 5b having a substantially U-shaped cross section that is superimposed on the divided body 5a in the middle.
In the divided body 5a, a reinforcement hole 5c for inserting and fixing an end portion of a later-described reinforcement 6 and a tube hole 5d for inserting and fixing an end portion of the tube 2m are each formed into an annular projection shape by burring. Is formed.
In addition, a pair of beads 5e that are fixedly supported in a state of sandwiching the core portion 2c side of the divider plate 2d are provided projecting inward at a position where the divider plate 2d is interposed in the divided body 5a.
In addition, a plurality of pairs of locking portions 5f that are caulked and fixed to a part of the outer periphery of the divided body 5a are formed on the opposing side walls of the substantially U-shaped cross section of the divided body 5a along the longitudinal direction.
On the other hand, a fixing hole 5h into which the convex portion 5g formed on the divider plate 2d is inserted and fixed is formed at a position where the divider plate 2d is interposed in the divided body 5b.

Furthermore, the divide plate 2d interposed at both ends in the longitudinal direction of the tank body 5 is disposed on the inside by a predetermined dimension with respect to the ends, thereby opening outward at both ends in the longitudinal direction of the tank body 5. The portions 5i (corresponding to the locking holes in the claims) are respectively formed.
In addition, since the fixing structure with the header tank 2a in the input connector 2f and the output connector 1h is the same as well-known, the description is abbreviate | omitted (refer patent document 2).

The core portion 2c includes a plurality of flat tubular tubes 2m that are inserted and fixed in header tanks 5 and 6 corresponding to both ends, and corrugated plate-like fins 2n in which corrugated top portions are joined to adjacent tubes 2m. It is composed of
Further, both sides of the core portion 2c in the stacking direction are connected and reinforced by a reinforcement 6 having both end portions inserted and fixed in the corresponding header tanks 5 and 6, respectively.

  As shown in FIG. 9, the reinforcement 6 has a substantially U-shaped cross section having side walls 6a and 6b erected in the vertical direction, and extends in the horizontal direction, and in each of the reinforcement holes 5c of the header tanks 2a and 2b. The end in the longitudinal direction to be inserted and fixed is formed in a flat plate shape.

The constituent members of the capacitor 2 are all made of aluminum, and at least one of the joint portions of the constituent members is provided with a brazing material (brazing sheet), and these are heat-treated in a temporarily assembled state. As a result, the joints are brazed and formed integrally.
The receiver tank 2k is fixed to the capacitor 2 after heat treatment according to the internal structure.

Next, the operation of the first embodiment will be described.
<Fixing capacitor and radiator>
When the capacitor 2 is fixed to the radiator 1, first, as shown in FIG. 10, the capacitor 2 is disposed in front of the radiator 1 so as to face the radiator 1, and then horizontally moved to the radiator 1 side. 2, the left and right end portions of the header tanks 2a and 2b begin to slide inside the guide portions 4b and 4c of the corresponding fixed portion 3, respectively.

Subsequently, as shown in FIG. 11, at the left and right and upper and lower ends of the radiator 1 and the capacitor 2, the rear end portions of the header tanks 2 a and 2 b respectively correspond to the front inclined portions 4 e of the locking portions 4 a of the corresponding fixing portions 3. Then, the latching portion 4a is elastically deformed in the vertical direction, and then latched in the notch hole 4d at the rear end portion (see FIG. 2).
Thereby, the movement of the capacitor 2 in the front-rear direction and the up-down direction can be restricted by the locking part 4a of each fixing part 3, and the movement of the capacitor 2 in the left-right direction can be restricted by the guide parts 4b, 4c of each fixing part. The capacitor 2 can be easily fixed in a state where it is positioned with respect to the radiator 1.

<About the guide section>
As described above, the guide portions 4b and 4c in each fixing portion 3 are provided in a state of protruding forward by a predetermined dimension L1 from the locking portion 4a, so that the rear end portions of the header tanks 2a and 2b are connected to each other. Before coming into contact with the front-side inclined portion 4e of the stop portion 4a, the left and right end portions of the header tanks 2a and 2b are brought into contact with and slide inside the guide portions 4b and 4c.
Therefore, the guide portions 4b and 4c can be guided and positioned so that the locking portion 4a is locked at an appropriate position.

  In the first embodiment, the dead weight of the capacitor 2 is supported by the locking portions 4a of the respective fixing portions 3 of the tank 1b. The reinforcement 6 below the capacitor 2 is formed on the upper surface of the guide portion 4b of the fixing portion 3. You may make it support in the state which contacted and mounted.

<Operation of radiator>
The radiator 1 to which the capacitor 2 is fixed is mounted in a vehicle engine room in a state of being fixed to a radiator core support (not shown) using a vehicle mounting pin 1h.
Further, the input port 1f and the output port 1g are connected to the engine in a ring shape to form an engine refrigeration cycle.

The high-temperature circulation medium at around 80 ° C. flowing into the tank 1a from the engine side via the input port 1f passes through the core portion 1c while flowing into the tank 1b via the tubes 1i of the core portion 1c. Heat is exchanged with the running wind or the forced wind of a fan (not shown), and cooled to around 60 ° C.
Further, the flow medium flowing into the tank 1b is sent again to the engine side via the output port 1g and functions as a heat exchanger.

<Capacitor operation>
In the refrigeration cycle for air conditioning in the passenger compartment, the capacitor 2 has an input port 2e of the input connector 2f connected to the compressor side (not shown) and an output port 2g of the output connector 2h connected to the evaporator side (not shown).

Then, the high-temperature circulation medium at around 60 ° C. flowing into the chamber R1 of the header tank 2a from the engine side via the input port 2e is first sent to the chamber R2 of the header tank 2b via the corresponding tubes 2m of the core portion 2c. While flowing in the order of the chamber R3 of the header tank 2a and the chamber R4 of the header tank 2b, heat is exchanged with vehicle traveling wind passing through the core portion 2c or forced air of a fan (not shown) and cooled.
Next, the flow medium that has flowed into the chamber R4 of the header tank 2b flows into the receiver tank 2k from the connection pipe 2i and is gas-liquid separated, and then flows into the chamber R5 of the header tank 2b through the connection pipe 2j.
Next, the flow medium flowing into the chamber R5 of the header tank 2b passes through the core portion 2c while flowing into the chamber R6 of the header tank 2a via the corresponding tube 2m of the core portion 2c, or not shown. After being heat-exchanged with the forced air of the fan and subcooled to around 45 ° C., it is sent to the evaporator side via the output port 2g of the output connector 2h and functions as a heat exchanger.

Next, the effect will be described.
As described above, in the invention of the first embodiment, in the fixing structure of the heat exchanger in which the condenser 2 is fixed to the radiator 1, the pair of header tanks 2a and 2b in which the condenser 2 is disposed at a predetermined interval. And a core portion 2c disposed between the pair of header tanks 2a, 2b, and the radiator 1 is disposed between the pair of tanks 1a, 1b disposed at a predetermined interval and the pair of tanks 1a, 1b. The tanks 1a and 1b of the radiator 1 are formed of resin, and the tanks 1a and 1b are locked to the capacitor 2 by the elastic force of the resin at both ends in the longitudinal direction. Since the locking portion 4a capable of fixing the capacitor 2 is integrally formed, the capacitor 2 can be easily fixed without using a bracket.

Further, each locking portion 4a is integrally formed in a shape projecting from the corresponding tank 1a, 1b to the capacitor 2 side, and each locking portion 4a is locked to the longitudinal end of the header tank 2a, 2b of the capacitor 2 Therefore, the capacitor 2 and the radiator can be fixed with high accuracy by fixing the locking portion 4a directly to the left and right core size of the core portion 2c and fixing to the header tanks 2a and 2b assembled with high accuracy.
Moreover, when the latching | locking part 4a of the radiator 1 is spaced apart from the core part 2c of the capacitor | condenser 2, when these both are assembled | attached, the core part 2c can be protected and a burden is applied to the core part 2c after the assembly. This is preferable.

  Further, since the guide portions 4b and 4c capable of positioning the locking position of the locking portion 4a are integrally formed with the tanks 1a and 1b of the radiator 1, the locking portion 4a is accurately positioned in the longitudinal direction of the header tanks 2a and 2b. Can be fixed.

  Further, since the engaging portion 4a can be engaged with the capacitor 2 by relative movement in the thickness direction of the capacitor 2 and the core portions 2c, 1c of the radiator 1, both of them come into contact with each other during assembly and the core portions 2c, 1c. Can reduce the possibility of damage.

Example 2 will be described below.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, the description thereof will be omitted, and only the differences will be described in detail.
FIG. 13 is a front view showing the assembled state of the capacitor and the radiator of the second embodiment, and FIG. 14 is a cross-sectional view taken along line S14-S14 in FIG.

As shown in FIGS. 13 and 14, in the second embodiment, each locking portion 4 a of the fixing portion 3 described in the first embodiment is locked to the side wall 6 b of the substantially U-shaped cross section of the reinforcement 6. Different from the first embodiment.
In addition, each locking portion 4a is in contact with the inside of the tank body 5, and the guide portions 4b and 4c described in the first embodiment are omitted.

  Therefore, in the second embodiment, in addition to the same operations and effects as in the first embodiment, each of the locking portions 4a is locked to the corresponding reinforcement 6 so that the capacitor 2 is positioned on the radiator 1 in the vertical and horizontal directions. The effect that it can be easily fixed can be obtained.

Although the embodiments have been described above, the present invention is not limited to the above-described embodiments, and design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.
For example, the types of the first heat exchanger and the second heat exchanger can be set as appropriate, and may be applied to, for example, an intercooler or an oil cooler.

It is a front view which shows the assembly | attachment state of the capacitor | condenser of Example 1, and a radiator. It is sectional drawing in the S2-S2 line | wire of FIG. FIG. 2 is a front view of the radiator according to the first embodiment. It is a top view explaining the fixing | fixed part of the radiator of Example 1. FIG. It is sectional drawing in the S5-S5 line | wire of FIG. 3 is a front view of the capacitor of Example 1. FIG. It is an exploded view of the header tank of the capacitor of Example 1. It is a perspective view of the header tank of the capacitor of Example 1. It is a perspective view of the reinforcement of Example 1. FIG. It is a figure explaining fixation of the capacitor and radiator of Example 1. It is a figure explaining fixation of the capacitor and radiator of Example 1. It is a figure explaining fixation of the capacitor and radiator of Example 1. It is a front view which shows the assembly | attachment state of the capacitor | condenser of Example 2, and a radiator. It is sectional drawing in the S14-S14 line | wire of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Radiator 1a Upstream side tank 1b Downstream side tank 1c Core part 1d Seal member 1e Tube replate 1f Input port 1g Output port 1h Vehicle-mounted pin 1i Tube 1j Fin 1k Reinforce 2 Capacitor 2a, 2b Header tank 2c Core part 2d Divide plate 2e Input port 2f Input connector 2g Output port 2h Output connector 2i, 2j Connection pipe 2k Receiver tank 2m Tube 2n Fin 3 Fixing part 4a Locking part 4b 4c Guide part 4d Notch hole 4e Front side inclined part 5 Tank body 5a, 5b Divided body 5c Reinforce hole 5d Tube hole 5e Bead 5f Locking part 5g Protruding part 5h Fixed hole 5i Opening part 6 Reinforce

Claims (5)

In the heat exchanger fixing structure in which the first heat exchanger is fixed to the second heat exchanger,
The first heat exchanger includes a pair of tanks disposed at a predetermined interval, and a core portion disposed between the pair of tanks,
The second heat exchanger includes a pair of tanks arranged at a predetermined interval, and a core part arranged between the pair of tanks,
Each tank of the second heat exchanger is formed of resin, and the first heat exchanger is engaged with the first heat exchanger by elastic force of the resin at both longitudinal ends of the tanks. A fixing structure for a heat exchanger, wherein a fixing portion that can be fixed is integrally formed. In the fixing structure of the heat exchanger according to claim 1,
The locking portions are integrally formed in a shape protruding from the corresponding tank to the first heat exchanger side,
A fixing structure for a heat exchanger, wherein each of the locking portions is locked to a longitudinal end portion of a tank adjacent to the first heat exchanger. In the fixing structure of the heat exchanger according to claim 2,
A heat exchanger fixing structure, wherein a guide portion capable of positioning the locking position of the locking portion is integrally formed in each tank of the second heat exchanger. In the fixing structure of the heat exchanger according to claim 2 or 3,
Fixing the heat exchanger, wherein the locking portions can be locked to the first heat exchanger by relative movement in the thickness direction of the core portions of the first heat exchanger and the second heat exchanger. Construction. In the fixing structure of the heat exchanger according to claim 1,
Reinforces are arranged on both sides in the stacking direction of the tubes and fins of the core part of the first heat exchanger,
The locking portions are integrally formed in a shape protruding from the corresponding tank to the first heat exchanger side,
A fixing structure for a heat exchanger, wherein each of the engaging portions is engaged with a reinforce adjacent to the first heat exchanger.

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