JP2600459Y2 - Stacked heat exchanger with electric fan - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated heat exchanger equipped with an electric fan having an electric fan for generating an air flow from one side of the laminated heat exchanger to the laminated heat exchanger, and more particularly to a condenser. It is suitable for use in an outdoor heat exchanger of a vehicle air conditioner equipped with an electric fan.

[0002]

2. Description of the Related Art As an example of the prior art, a condenser of a refrigeration cycle used in an air conditioner for a vehicle will be described as an example. In general, a stacked heat exchanger is used as a condenser mounted outside the vehicle compartment. This laminated heat exchanger includes a plurality of tubes each having a refrigerant passage formed therein, a plurality of corrugated fins formed in a wavy meander, and a core formed by alternately laminating a plurality of tubes and a plurality of corrugated fins on both sides. It consists of a pair of side plates sandwiched between them.

In order to forcibly exchange heat between outdoor air and a refrigerant flowing through the inside of the condenser, an electric fan is attached to one surface of the condenser. The electric fan includes a plurality of legs fixed to the pair of side plates, and the electric fan is fixed to one surface of the capacitor by fixing the legs to the pair of side plates.

[0004]

The weight or vibration of the electric fan is applied to the side plate via the leg. However, since the side plate has a structure in which a thin plate is joined to a meandering corrugated fin by brazing or the like, the strength is low. For this reason, the weight of the electric fan or the vibration may cause the joint portion between the side plate and the corrugated fin to be peeled off, and in some cases, the capacitor to be damaged such that the side plate is deformed or damaged.

[0005]

The object of the present invention is to prevent the weight of the electric fan and the vibration of the laminated heat exchanger from being damaged even if the electric fan is supported by the side plate, and to prevent the air passing through the laminated heat exchanger from being damaged. The present invention is to provide a laminated heat exchanger with an electric fan in which the heat is rectified.

[0006]

The laminated heat exchanger with an electric fan according to the present invention comprises a plurality of tubes having a fluid passage formed therein, a plurality of corrugated fins formed in a meandering wave shape, and the plurality of corrugated fins. A laminated heat exchanger including a pair of side plates sandwiching a core formed by alternately laminating tubes and the plurality of corrugated fins from both sides, and a leg fixed to the pair of side plates; An electric fan for generating an airflow from one surface side of the heat exchanger to the stacked heat exchanger, and fixed to the pair of side plates, and the pair of side plates on the other surface side of the stacked heat exchanger. Technical means for bridging and reinforcing members having a rectifying function to regulate the flow of air passing through the stacked heat exchanger are employed.

[0007]

The weight and vibration of the electric fan mounted on one side of the stacked heat exchanger are applied to the pair of side plates of the stacked heat exchanger via the legs. On the other hand, the pair of side plates are connected with the pair of side plates being bridged by the reinforcing member. Therefore, the weight and vibration of the electric fan applied to the side plate are received not only by the side plate but also by the reinforcing member.

[0008]

According to the stacked heat exchanger with an electric fan of the present invention, as described above, the reinforcing member receives the weight and vibration of the electric fan, so that the load on the side plate for supporting the electric fan is reduced. It becomes lighter. As a result, it is possible to prevent the joint portion between the side plate and the corrugated fin from peeling, and prevent the side plate from being deformed or damaged. That is, by providing the reinforcing member that bridges the pair of side plates on a side different from the electric fan, it is possible to prevent the stacked heat exchanger from being damaged. In addition, the flow of air passing through the stacked heat exchanger is adjusted by the rectifying action of the reinforcing member fixed to a different side from the electric fan.

[0009]

[Configuration of First Embodiment]

1 to 3 show a first embodiment. FIG. 1 is a schematic sectional view of a condenser with an electric fan, FIG. 2 is a plan view of the condenser with an electric fan as viewed from one side, and FIG. FIG. 5 is a plan view of the attached capacitor as viewed from the other surface side.
The condenser with an electric fan includes a condenser 1 which is a laminated heat exchanger, an electric fan 2 attached to one side of the condenser, and an air guide 3 attached to the other side of the condenser 1. .

First, the capacitor 1 will be described. The condenser 1 is a laminated heat exchanger formed of a metal material such as brass and aluminum.
And a plurality of corrugated fins 5 alternately laminated with core 6
And a pair of headers 7 joined to both ends of each tube 4
And a pair of side plates 8 connected to a pair of headers 7 with the core 6 sandwiched from both sides.

The tube 4 has a refrigerant passage (fluid passage) therein.
The heat exchange between the air passing between the tubes 4 and the refrigerant passing through the refrigerant passages is performed by the flat tubes formed with. The corrugated fins 5 are brazed to the tubes 4 while being sandwiched between the tubes 4, and improve the heat exchange rate between the refrigerant flowing inside the tubes 4 and the air flowing between the tubes 4. is there. The corrugated fin 5 is formed by bending a strip-shaped and extremely thin plate material in a wave shape.
Incidentally, a large number of louvers are usually formed in the corrugated fin 5 in order to improve the heat exchange efficiency.

The header 7 is a cylindrical tank, into which each tube 4 is inserted, and which is joined to each tube 4 by brazing. It should be noted that one header 7 includes a header 7
A separator (not shown) for dividing the inside is brazed and joined to the header 7 to which the separator is joined. One of the headers 7 divided by the separator has a high temperature discharged by a refrigerant compressor (not shown). A refrigerant inflow joint 9 for supplying a high-pressure refrigerant is joined by brazing, and the condensed refrigerant that has passed through each tube 4 is passed to the other end of the header 7 divided by the separator (not shown) or a decompression device (not shown). The refrigerant outflow joint 10 which is made to flow out is connected by brazing. The side plate 8 is a press-formed product having a U-shaped cross section excluding both ends, and a portion bent into a U-shape is joined to the corrugated fin 5 by brazing, and both ends are inserted into the header 7. It is joined to the header 7 by brazing.

Next, the electric fan 2 will be described. The electric fan 2 of the present embodiment is a push-in type that is attached to one surface side of the condenser 1 (for example, the traveling direction of the vehicle) and sends air from one side of the condenser 1 to the condenser 1. The electric fan 2 includes an electric motor 11 that rotates when energized, an axial fan 12 that is driven to rotate by the electric motor 11, and an axial fan 12 that is attached to the electric motor 11. And a fan shroud 13 arranged to face the side.

The fan shroud 13 includes the axial fan 12
, A plurality of support stays 15 extending in the inner diameter direction of the shroud portion 14 and supporting the electric motor 11, and a pair of side plates 8 extending in the outer diameter direction of the shroud portion 14. Consists of four legs 16 fixed to both ends. By fixing each of the four legs 16 to both ends of the pair of side plates 8, the axial fan 12 is arranged to face one surface of the condenser 1.

Next, the air guide 3 will be described. The air guide 3 is a metal plate attached to the other surface side of the condenser 1 (for example, the side opposite to the traveling direction of the vehicle), and also serving as a reinforcing member that bridges the pair of side plates 8 on the other surface side of the condenser 1. A rectifying plate 17 that covers substantially the front surface on the other surface side of the capacitor 1, and four fixing portions 18 that are fixed to both end sides of the pair of side plates 8. The rectifying plate 17 has a plurality of elongated holes 19 formed therein to regulate the flow of air passing through the condenser 1, and regulates the flow of air passing through the condenser 1 depending on the arrangement of the elongated holes 19.

In the present embodiment, the four legs 16 of the electric fan 2 and the four fixing portions 18 of the air guide 3 are fixed to the side plate 8 via a connecting bracket 20. The bracket 20 is connected to the leg 16 of the electric fan 2.
And the fixed portion 18 of the air guide 3, and the electric fan 2
This is a connecting member for transmitting the load applied to the leg 16 to the air guide 3, and is attached to the side plate 8 with the U-shaped bent portion of the side plate 8 sandwiched from both sides. At both ends of the bracket 20, there are provided claws 21 which are sandwiched between the U-shaped bent portions of the side plate 8 to restrict the U-shaped bent portion from buckling inward.

Then, brackets 20 are mounted on both ends of the pair of side plates, and the electric fan 2 is mounted on one side of the capacitor 1 to align the four legs 16 with the bracket 20. The air guide 3 is mounted from the other surface side of the, and the four fixing portions 18 are aligned with the bracket 20. Then, bolts 22 are attached to leg 16 and bracket 2 from one side of capacitor 1.
0, the side plate 8, the bracket 20, and the fixing portion 18 in this order, and screwed into the nut 23 on the other surface side of the capacitor 1. Thus, the electric fan 2 is fixed to one surface of the capacitor 1 and the air guide 3 is fixed to the other surface of the capacitor 1.

[Operation of the Embodiment] The condenser 1 to which the electric fan 2 and the air guide 3 are attached is attached to the vehicle via an attachment stay (not shown). The weight and vibration of the electric fan 2 are transmitted to the side plate 8 via the leg 16 and the air guide 3 is transmitted from the leg 16 via the bracket 20.
Is also told. That is, as in the conventional case, the electric fan 2
Is not concentrated only on the side plate 8, and the load on the side plate 8 from the electric fan 2 is reduced.

[Effects of the Embodiment] In this embodiment, the load on the side plate 8 from the electric fan 2 is reduced by providing the air guide 3 also serving as a reinforcing member on the other surface side of the capacitor 1.
It is possible to prevent the portion where the side plate 8 and the corrugated fin 5 are joined by brazing from being peeled off, and to prevent the side plate 8 from being deformed or damaged. That is,
A pair of side plates 8 on a side different from the electric fan 2
The provision of the air guide 3 that bridges the gap prevents the capacitor 1 from being damaged. The flow of air passing through the condenser 1 is adjusted by the rectifying action of the air guide 3 fixed to a side different from the electric fan 2.

[0020]

[Modification] In the present embodiment, an example in which the present invention is applied to a condenser of a vehicle refrigeration cycle as an example of a laminated heat exchanger is shown. However, other examples such as a stationary condenser and a radiator used in homes and the like are shown. The present invention may be applied to a laminated heat exchanger with an electric fan. Although the push-type electric fan that sends the air generated by the electric fan to the stacked heat exchanger has been described as an example, a suction-type electric fan that sucks air passing through the stacked heat exchanger may be used. When an air guide is used as the reinforcing member on the suction side of the stacked heat exchanger, the air guide functions to rectify the air flowing into the stacked heat exchanger.

Although an example is shown in which the legs of the electric fan and the reinforcing member are connected via a bracket, the legs of the electric fan and the reinforcing member are connected via a side plate without using a bracket. Is also good. Further, the bracket may be provided so as to be fixed to the vehicle.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a condenser with an electric fan.

FIG. 2 is a plan view of the condenser with an electric fan as viewed from one surface side.

FIG. 3 is a plan view of the condenser with an electric fan as viewed from the other surface side.

[Explanation of symbols]

 Reference Signs List 1 condenser 2 electric fan 3 air guide (reinforcement member) 4 tube 5 corrugated fin 6 core 7 header 8 side plate 16 leg

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B60H 1/32 615 F01P 5/02 F28D 1/00-1/06 F28F 9/00 331 F28F 9/26

Claims (1)

(57) [Scope of request for utility model registration] (A) A plurality of tubes having a fluid passage formed therein, a plurality of corrugated fins formed in a wavy shape, and a core in which the plurality of tubes and the plurality of corrugated fins are alternately stacked. A heat exchanger comprising a pair of side plates sandwiching the heat exchanger from both sides; and (b) a leg fixed to the pair of side plates, wherein the heat exchanger is provided on one side of the heat exchanger. an electric fan for creating an air flow exchanger, (c) is fixed to the pair of side plates, as well as bridging the pair of side plates on the other surface side of the laminated heat exchanger, the stacked heat Pass through exchanger
And a reinforcing member having a rectifying function to regulate the flow of air to be blown .