JP2565707Y2 - Heat exchanger - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger for a vehicle air conditioner.

[0002]

2. Description of the Related Art Conventionally, the following heat exchangers have been used as condensers for automotive air conditioners. That is, a plurality of notched holes are formed in the pair of headers arranged side by side at predetermined intervals along the longitudinal direction. The corrugated fins and the flat tubes are alternately stacked, and the end plates are respectively in contact with the corrugated fins located on both sides. Both ends of the flat tube are respectively inserted into notched holes of the header. Further, the capacitor is inserted into the furnace in a temporarily fixed state in which the jigs are used to position the headers and sandwich the end plates so that the corrugated fins do not fall off. It is completed by melting and brazing a previously provided brazing material.

The connection structure between the cutout hole of the header and the end of the flat tube is as shown in FIGS. 4 and 5, for example. In the connection structure shown in FIG. 4, the header 1 is composed of the tank member 2 and the header member 3, so that the flat tube 5 is inserted through the cutout hole 4 provided in the header member 3 before the two are integrated. The flat tube 5 is expanded as shown by a solid line to fit the notched hole 4.

On the other hand, in the connection structure shown in FIG. 5, a notch 7 is provided in the header 6, and one end of the flat tube 8 is contracted from a state shown by a two-dot chain line and inserted into the notch 7. The stepped portion 8a formed on the flat tube 8 is in contact with the edge of the cutout hole 7.

[0005]

However, in the former connection structure, if the header member 3 and the flat tube 5 are accurately positioned, and the flat tube 5 is not expanded while being fixed with a jig, this expansion work is not required. There is a possibility that inconvenience such as displacement between the headers 1 may occur. In other words, it is not only that the header 1 is sandwiched between the jigs,
Since it is necessary to keep the gap at a constant interval, the temporary assembling work becomes difficult, resulting in an increase in cost.

Further, in the latter connection structure, all the flat tubes 8 are kept in a state where the distance between the headers 6 is maintained at a constant size.
In order to mount the flat tube 8 between the headers 6 without rattling or falling off, the position of the step 8a of the flat tube 8 needs to be accurate, so that the temporary assembling work is also difficult, and the cost is low. Was leading up. The present invention has been made in view of the above problems, and has as its object to provide a heat exchanger that can easily perform a temporary assembling operation.

[0007]

According to the present invention, in order to achieve the above object, a plurality of notches are formed in a pair of side-by-side headers along the longitudinal direction, while corrugated fins and flat tubes are alternately formed. Laminated, the end plate respectively abuts the corrugated fins located on both sides, in a heat exchanger in which both ends of the flat tube are inserted into the cutout holes of the header, the header is a long material, A header member in which engagement holes through which one end of the flat tube is inserted is formed at a plurality of locations at predetermined intervals along the longitudinal direction, and a long material, which is fitted inside the header member and is opposed to each other. A tank member is provided with a cutout receiving portion formed at a position corresponding to the engaging hole on the edge portion, with which one end of each of the flat tubes can contact.

[0008]

According to the present invention, when one end of the flat tube is inserted into the engaging hole provided in the header member, the end comes into contact with the notch receiving portion provided in the tank member, and the header is accurately positioned. Will be.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the heat exchanger according to the present invention will be described with reference to the condensers shown in FIGS. In this capacitor, as shown in FIG. 1, corrugated fins 10 and flat tubes 11 are alternately laminated, and both ends of the flat tubes 11 are connected to a pair of headers 12 (one is not shown). Things.

The corrugated fin 10 is formed by corrugating a thin plate made of, for example, aluminum having a large heat transfer coefficient. In addition, the flat tubes 11 are all the same length, and the refrigerant flows inside. The header 12 is formed by fitting a header member 14 and a tank member 15 and closing both ends with lids 16 (one not shown).

The header member 14 is a plate-like body having a substantially U-shaped cross section. Engagement holes 17 into which the flat tubes 11 are fitted are formed in the bottom wall at predetermined intervals in the longitudinal direction. On the other hand, the tank member 15 is a long material having a substantially U-shaped cross section, and a notch receiving portion 18 wider than the thickness of the flat tube 11 is provided on both side edges at positions facing each other. It is provided at the same pitch as the engagement holes 17 formed in the header member 14. Further, the depth dimension of each notch receiving portion 18 is the same from the edge.

The capacitor having the above structure is assembled as follows. First, the tank member 15 is fitted inside the header member 14, and the openings at both ends are closed with the lid 16. In this state, the notch receiving portions 18 are located at both ends of each engagement hole 17 and face outward (FIG. 2).
reference). On the other hand, as shown in FIG.
0 and the flat tubes 11 are alternately laminated, and the end plates 1 are attached to the corrugated fins 10 located on both sides.
Contact 3

Then, both ends of each of the flat tubes 11 are inserted into engagement holes 17 of the header member 14, respectively, and as shown in FIGS.
The front ends thereof are brought into contact with the notch receiving portions 18, 18. As a result, the space between the headers 12 can be accurately set to a desired size.

Subsequently, a jig is used to move the header 12
The temporary assembling operation is completed by holding the flat tubes 11 between the notch receiving portions 18 while holding the gap therebetween, and by holding the corrugated fins 10 between the end plates 13 so as not to fall off.

Thereafter, as described above, the fixed condenser is charged into the furnace, and the contact portions between the corrugated fins 10 and the flat tubes 11, both ends of the flat tubes 11 and the engagement holes 17 of the header member 14 are formed. By brazing the inner edges, a capacitor is completed.

As described above, by simply inserting the flat tube 11 into the engagement hole 17 of the header member 14 and clamping the header 12 with the jig, the end face of the flat tube 11 is As a result, the temporary assembling operation can be simplified since the headers can be accurately positioned between the headers. In the above-described embodiment, the condenser has been described as the heat exchanger. However, an evaporator or the like may be used.

[0017]

As is apparent from the above description, according to the heat exchanger according to the present invention, both ends of the flat tube are inserted into the engagement holes of each header member, and the end faces are inserted into the cutout receiving portions. Since the headers can be easily maintained at a constant size simply by being brought into contact, the temporary assembling operation can be easily performed.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a capacitor according to an embodiment.

FIG. 2 is a plan sectional view showing the vicinity of a header of the capacitor according to the embodiment.

FIG. 3 is a front sectional view of FIG. 2;

FIG. 4 is a plan sectional view showing the vicinity of a header of a capacitor according to a conventional example.

FIG. 5 is a plan sectional view showing the vicinity of a header of a capacitor according to another conventional example.

[Explanation of symbols]

10: Corrugated fin, 11: Flat tube, 12:
Header, 13: End plate, 14: Header member, 1
5: tank member, 17: engagement hole, 18: notch receiving portion.

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of notched holes are formed in a pair of side-by-side headers along the longitudinal direction, while corrugated fins and flat tubes are alternately laminated, and end plates are respectively attached to corrugated fins located on both sides. In the heat exchanger in which both ends of the flat tube are inserted into the cutout holes of the header, the header is formed of a long material, and the engagement hole through which one end of the flat tube is inserted is elongated. A header member formed at a plurality of locations at predetermined intervals along the direction, and a long material, fitted inside the header member, at a position corresponding to the engagement hole on both opposing edges.
A heat exchanger, comprising: a tank member having a cut-out receiving portion with which one end of each of the flat tubes can contact.