JPH0561684U - Heat exchanger - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object to provide a heat exchanger that can be easily assembled. [Structure] A pair of headers 12 arranged in parallel is connected to one end of each flat tube 11 alternately laminated with a corrugated fin 10, and both ends of both headers 12 are connected by an end plate 13. .. The header 12
Is composed of a header member 14 and a tank member 15. The header member 14 is a plate-shaped member having a substantially U-shaped cross section, and engaging holes 17 into which one end of the flat tube 11 is fitted are formed at predetermined intervals in the longitudinal direction. The tank member 15 has a substantially U-shaped cross section.
A notch receiving portion 18 that is a V-shaped long member and that fits into the header member 14 and is in contact with one end of each of the flat tubes 11 is formed at both edges along the longitudinal direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat exchanger for a vehicle air conditioner.

[0002]

[Prior Art]

 Conventionally, the following heat exchangers have been used as condensers for automobile air conditioners. That is, a plurality of cutout 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 stacked alternately, and the end plates are in contact with the corrugated fins located on both sides. Both ends of the flat tube are inserted into the cutout holes of the header. In addition, the capacitor is placed in the furnace in a temporarily fixed state in which the headers are positioned by a jig and the corrugated fins are prevented from falling off by sandwiching the end plates, and the capacitors are inserted into the contact parts of each member. It is completed by melting and brazing the brazing material provided in advance.

By the way, the connection structure between the cutout hole of the header and the end portion 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 into the cutout hole 4 provided in the header member 3 before the both are integrated. The flat tube 5 is expanded as shown by the solid line (shown by a chain double-dashed line in the figure) to be fitted into the cutout hole 4.

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

[0005]

[Problems to be solved by the device]

 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 by a jig, the headers 1 are displaced during the expansion work. There is a risk of inconvenience such as In other words, not only the header 1 needs to be sandwiched between the above-mentioned jigs but also the headers 1 need to be held at a constant interval, which makes temporary assembly work difficult and increases the cost.

Further, in the latter connection structure, all the flat tubes 8 are mounted between the headers 6 without rattling or falling while maintaining the gap between the headers 6 at a constant dimension. However, since it is necessary to accurately position the stepped portion 8a of the flat tube 8, the temporary assembling work is also difficult, which leads to an increase in cost. The present invention has been made in view of the above problems, and an object of the present invention is to provide a heat exchanger capable of easily performing temporary assembly work.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention forms a plurality of notched holes in a pair of headers arranged side by side in the longitudinal direction, respectively, and stacks corrugated fins and flat tubes in an alternating manner to locate corrugations on both sides. In a heat exchanger in which end plates are brought into contact with fins and both ends of the flat tube are respectively inserted into the notch holes of the header, the header is a long member, and one end of the flat tube is A header member in which a plurality of engaging holes to be inserted are formed at predetermined intervals along the longitudinal direction, and a long member that is fitted inside the header member and that has the engaging holes at both edges facing each other. And a tank member in which a notch receiving portion with which one end of each of the flat tubes can abut is formed at a position corresponding to.

[0008]

[Action]

 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 of the flat tube comes into contact with the notch receiving portion provided in the tank member, and the headers are accurately positioned. Will be.

[0009]

【Example】

 Next, an embodiment of the heat exchanger according to the present invention will be described with reference to the capacitors 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 of which is not shown). It is a thing.

The corrugated fin 10 is formed by corrugating a thin plate made of, for example, aluminum having a large heat transfer coefficient. All the flat tubes 11 have the same length so that 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 of which is not shown).

The header member 14 is a plate-shaped member having a substantially U-shaped cross section, and engaging 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 member having a substantially U-shaped cross section, and notch receiving portions 18 having a width wider than the thickness of the flat tube 11 are provided at opposite sides at both side edges thereof. Are provided at the same pitch as the engaging holes 17 formed in the header member 14. The depth dimension of each notch receiving portion 18 is the same from the edge portion.

The capacitor having the above structure is assembled as follows. First, the tank member 15 is fitted inside the header member 14, and both end openings are closed with the lid 16. In this state, the notch receiving portions 18, 18 are located at both ends of each engaging hole 17 and face outward (see FIG. 2). On the other hand, as shown in FIG. 1, the corrugated fins 10 and the flat tubes 11 are alternately laminated, and the end plates 13 are brought into contact with the corrugated fins 10 located on both sides.

Then, both ends of each flat tube 11 are inserted into the engaging holes 17 of the header member 14, respectively, and as shown in FIGS. 2 and 3, the notch receiving portions 18, 18 of the tank member 15 are inserted. And the tip portions thereof are brought into contact with each other. As a result, the space between the headers 12 can be accurately set to a desired size.

Then, using a jig, the flat tubes 11 are held between the headers 12 by holding them between the notch receiving portions 18, and the corrugated fins 10 do not drop between the end plates 13. Then, the temporary assembling work is completed.

Thereafter, as described above, the fixed condenser is loaded into the furnace, and the corrugated fin 10 and the flat tube 11 are brought into contact with each other, both ends of the flat tube 11 and the engaging hole 17 of the header member 14 are inserted. The capacitors are completed by brazing the inner edges.

As described above, the flat tube 11 is inserted into the engagement hole 17 of the header member 14, and the headers 12 are sandwiched by a jig, so that the end surface of the flat tube 11 has a notch receiving portion 18 of the tank member 15. Since the headers can be brought into contact with each other and the headers can be accurately positioned, the temporary assembling work becomes easy. In the above embodiment, the condenser was explained as the heat exchanger, but it goes without saying that it may be an evaporator or the like.

[0017]

[Effect of the device]

 As is clear from the above description, according to the heat exchanger of the present invention, both end portions of the flat tube are inserted into the engaging holes of each header member, and the end surfaces thereof are brought into contact with the notch receiving portions. Since the space between the headers can be easily maintained at a constant size only by doing so, temporary assembly work can be easily performed.

[Brief description of 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 the header of the capacitor according to the present embodiment.

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

FIG. 4 is a cross-sectional plan 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 fins, 11 ... Flat tubes, 12 ...
Header, 13 ... End plate, 14 ... Header member, 1
5 ... Tank member, 17 ... Engagement hole, 18 ... Notch receiving part.

Claims (1)

[Scope of utility model registration request] 1. A plurality of notched holes are formed along a longitudinal direction in a pair of headers arranged in parallel, and corrugated fins and flat tubes are alternately laminated, and end plates are respectively attached to corrugated fins located on both sides. In a heat exchanger that abuts and inserts both ends of the flat tube into the notch holes of the header, the header is a long member, and an engagement hole through which one end of the flat tube is inserted is long. A header member formed at a plurality of positions at predetermined intervals along the direction, and a long member, which is fitted inward of the header member, at a position corresponding to the engaging holes of both opposing edge portions,
A heat exchanger comprising: a tank member having a notch receiving portion with which one end of each flat tube can abut.