JP4144314B2 - Mounting structure for vehicle heat exchanger - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat exchanger mounting structure used for a condenser of an air conditioner mounted on a vehicle.
[0002]
[Prior art]
A condenser of an air conditioner installed in an engine room of an automobile is disposed in front of a radiator that cools engine coolant, and is fastened and attached to a machine frame attached to the radiator. In this capacitor, a pair of left and right header tanks arranged vertically in parallel are connected by a number of tubes arranged in parallel and horizontally. The pair of header tanks are connected at both upper and lower ends with side plates, and heat radiation fins are brazed between the tubes and between the tubes and the side plates.
[0003]
This capacitor is attached by fastening a bracket brazed to a side plate to a machine frame with a bolt (see, for example, Patent Document 1 or 2). As shown in FIG. 6 (a), this bracket is brazed to the side plate 4 with a bracket 5A obtained by cutting an aluminum extrusion-molded body, or the bracket 5B as shown in FIG. 6 (b). A structure is devised in which the side plate 4 is bolted and fixed.
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. Hei 6-20219 [Patent Document 2]
Japanese Utility Model Publication No. 7-28978 [0005]
[Problems to be solved by the invention]
When extruding a bracket, there is a problem in that it is necessary to increase the plate thickness in order to obtain strength, the weight increases, and the degree of freedom in shape cannot be obtained. Further, when the bracket is formed by welding the divided parts, the number of parts increases, the cost increases, and the bolts are fixed to the side plate 4, so that the cost and the weight are further increased.
[0006]
The object of the present invention is to form a bracket by bending a plate material with ribs provided with reinforcing ribs on both sides to form a bracket, and brazing the bracket to the side plate, thereby reducing the strength required for low cost. And a mounting structure for a vehicle heat exchanger that can be easily assembled and can be reduced in weight.
[0007]
[Means for Solving the Problems]
The mounting structure for a heat exchanger for a vehicle according to the present invention includes a fastening plate portion formed by bending a plate material and having reinforcing ribs whose sides are bent in a direction opposite to the fastening surface, and extended from the fastening plate portion and the fastening surface. And a bracket composed of a brazing plate portion substantially orthogonal to the side plate is brazed to the side plate, and the bracket is fastened to the machine frame.
[0008]
In the present invention, the plate material is bent and the ribbed material provided with the reinforcing ribs on both sides is further bent to form the fastening plate portion and the brazing plate portion. And the brazing board part has the leg board part which extended the reinforcement rib on the same surface, and the foot board part which bent the lower end of the leg board part orthogonally outside. For this reason, the fastening plate portion is provided with reinforcing ribs on both sides over the entire length, and the structural strength of the bracket is reinforced by the reinforcing ribs. As a result, since the bracket can be formed by bending, the manufacturing cost is low, the required strength can be obtained even with a thin structure, and the weight can be reduced. Further, since the bracket is brazed to the side plate, the heat exchanger can be assembled to the machine frame with bolts, and the number of assembling steps can be reduced.
[0009]
In the invention according to claim 2, the fastening plate portion is formed in a substantially letter-shaped curve comprising an upper waist portion inclined in the direction of the reinforcing rib and a lower waist portion inclined in the opposite direction to the reinforcing rib and connected to the brazing plate portion. Part. Due to the presence of the substantially rectangular curved portion, the degree of freedom in designing the relative positional relationship between the fastening surface and the brazing plate portion can be increased, and when the fastening plate portion provided with the reinforcing rib is further bent, The stress applied to the tip can be reduced and molding becomes easy.
[0010]
In the invention according to the third aspect, the brazing plate portion is formed so as to extend from the reinforcing rib of the lower waist portion to the left and right outer sides and substantially orthogonal to the fastening surface. This configuration further increases the degree of freedom in designing the shape.
[0011]
In the invention described in claim 4, the fastening plate portion and the brazing plate portion are connected by a curved portion that is orthogonally curved toward the reinforcing rib side. In this configuration, since a compressive stress is applied to the tip of the reinforcing rib when the fastening plate portion with the reinforcing rib is bent, there is no problem of strength reduction due to the thinning of the reinforcing rib.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described based on a first embodiment shown in FIGS. The heat exchanger of this embodiment is a condenser 1 of an air conditioner installed in the front part of an engine room of an automobile, and is disposed in front of a radiator 10 for cooling engine coolant as shown in FIG. And fastened to the machine frame 11 attached to the radiator 10.
[0013]
The capacitor 1 is connected between a pair of left and right header tanks 2 and 2 arranged vertically in parallel by a large number of tubes 3 arranged in parallel and horizontally, and both upper and lower ends of the pair of header tanks 2 and 2. The parts are connected by a pair of upper and lower side plates 4, 4. The header tank 2 is made of aluminum and has a cylindrical shape, and the tube 3 is made of aluminum and has a flat shape.
[0014]
The side plate 4 is formed by pressing an aluminum plate, has a substantially square cross section, a flat plate portion 41 to which the corrugated fins 31 are joined, and an edge plate in which the front and rear edges of the flat plate portion 41 are bent substantially orthogonally. Parts 42 and 42. Both ends of the flat plate portion 41 are perpendicularly bent upward and downward and are joined portions 43 and 43 brazed to the outer periphery of the header tanks 2 and 2, and are formed in a cylindrical surface shape.
[0015]
The side plate 4 is stretched over the header tanks 2 and 2 so that the flat plate portion 41 is on the inner side in the vertical direction, and the joint portions 43 and 43 are brazed. It is inserted and brazed. Corrugated fins 31 are brazed between the tubes 3 and between the tubes 3 and the side plates 4 to form a core portion of the heat exchanger.
[0016]
Brackets 5 for fastening the capacitor 1 to the machine frame 11 are brazed to the outside of the left and right side portions of the side plate 4 (opposite the core portion). The bracket 5 is manufactured by punching an aluminum plate material into a predetermined shape and bending it with a press or the like. The bracket 5 includes a fastening plate portion 6 having reinforcing ribs 61 and 61 formed by bending the left and right sides in the same direction along the entire length, and a brazing plate portion 7 that is brazed to the side plate 4.
[0017]
The fastening plate portion 6 has a fastening surface 60 on the side opposite to the reinforcing ribs 61, 61, and includes a joining portion 63 in which a bolt insertion hole 62 is opened, and a curved portion 64 curved in a substantially square shape. The curved portion 64 has an upper waist portion 65 bulging toward the reinforcing rib 61 at an inclination of about 15 degrees with respect to the vertical, and a lower waist portion 66 bulging toward the opposite side of the reinforcing rib 61 with an inclination of about 45 degrees with respect to the vertical. Consists of. The curved portion 64 is formed by forming the reinforcing ribs 61 and 61 on the fastening plate portion 6 and then bending the fastening plate portion 6 into a substantially square shape.
[0018]
The brazing plate portion 7 is formed by extending the reinforcing ribs 61, 61 of the lower waist portion 66 vertically downward, leg plate portions 71, 71 extending the reinforcing ribs 61, 61 on the same plane, and the leg plate portion 71. , 71 have foot plate portions 72, 72 bent outwardly at right angles. The foot plate portions 72, 72 have a rectangular flat plate shape set to a size that fits between the edge plate portions 42, 42 of the side plate 4, and an upward curved edge 73 is provided at the outer end. .
[0019]
This capacitor 1 is a vacuum furnace in which header tanks 2 and 2, a large number of tubes 3, side plates 4 and 4, corrugated fins 31 and four upper and lower brackets 5 are integrally assembled, and brazing material is arranged on a brazing surface. It is manufactured by brazing together. The capacitor 1 is attached by attaching the upper and lower four brackets 5 shown in FIG. 3 to the machine frame 11 with bolts 12 as shown in FIG.
[0020]
Since the bracket 5 can be formed by punching and pressing an aluminum plate material into a predetermined shape, the bracket 5 can be manufactured at low cost. Further, since the reinforcing rib 61 is provided on the entire fastening plate portion 6 including the curved portion 64, the structural strength is high and the weight can be reduced even if the plate thickness is thin. Since the curved portion 64 curved in a substantially square shape is provided, the degree of freedom in designing the relative positional relationship between the fastening surface 60 and the brazing plate portion 7 can be increased, and the formation of the reinforcing rib 61 in this portion can be performed without difficulty. In addition, since the leg plate portions 71, 71 with the reinforcing ribs 61, 61 extending vertically downward are bent perpendicularly outward to form the foot plate portions 72, 72, the degree of freedom in design is great.
[0021]
FIG. 5 shows a bracket 8 according to a comparative example . The bracket 8 is formed by bending an aluminum plate material with a press or the like, and has reinforcing ribs 81 that are bent in the same direction on both the left and right sides over the entire length. After forming the reinforcing rib 81, the bracket 8 is bent about 90 degrees together with the reinforcing rib 81, to the fastening plate portion 83 to the machine frame in which the bolt insertion hole 82 is opened, and to the side plate 4. The brazing plate portion 84 is formed.
[0022]
In the bracket 8, compressive stress is applied to the tips of the reinforcing ribs 81 when the plate material with the reinforcing ribs 81 is bent. For this reason, the problem of the strength fall by thinning at the time of bending of the reinforcing rib 81 can be solved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a bracket according to a first embodiment.
FIGS. 2A and 2B are a front view and a side view of the bracket of the first embodiment. FIGS.
FIG. 3 is a front view of the capacitor.
FIG. 4 is a side view of a capacitor and a radiator.
FIG. 5 is a perspective view of a bracket of a comparative example .
FIG. 6 is a perspective view of a conventional bracket.
[Explanation of symbols]
1 Capacitor (heat exchanger)
DESCRIPTION OF SYMBOLS 10 Radiator 11 Machine frame 2 Header tank 3 Tube 4 Side plate 31 Corrugated fin 5 Bracket 6 Fastening plate part 60 Fastening surface 61 Reinforcement rib 64 Curved part 7 Brazing plate part

Claims (4)

A pair of header tanks arranged in parallel is connected by a plurality of tubes, and a heat exchanger in which both ends of the pair of header tanks are connected by side plates is mounted by a bracket brazed to the side plates. In the mounting structure of the vehicle heat exchanger fastened to the frame,
The bracket is formed by bending a plate material, and includes a fastening plate portion having reinforcing ribs whose sides are bent in a direction opposite to the fastening surface, and a brazing plate portion extending from the fastening plate portion and substantially orthogonal to the fastening surface. And consist of
The brazing plate portion includes a leg plate portion obtained by extending the reinforcing rib on the same plane, and a foot plate portion obtained by bending a lower end of the leg plate portion orthogonally to the outside . Mounting structure. 2. The mounting structure for a heat exchanger for a vehicle according to claim 1, wherein the fastening plate portion is connected to the brazing plate portion while being inclined in an opposite direction to the reinforcing rib and an upper waist portion inclined in the direction of the reinforcing rib. A mounting structure for a heat exchanger for a vehicle, characterized by having a substantially square-shaped curved portion comprising a lower waist portion. The mounting structure for a heat exchanger for a vehicle according to claim 2, wherein the brazing plate portion is extended from the reinforcing rib of the lower waist portion to the left and right outer sides. Mounting structure. 2. The vehicle heat exchanger mounting structure according to claim 1, wherein the fastening plate portion and the brazing plate portion are connected by a curved portion that is orthogonally curved toward the reinforcing rib. Mounting structure for a vehicle heat exchanger.

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