JPH02189228A - Condenser for air conditioner - Google Patents

Abstract

PURPOSE:To substantially extend each length of a tube and a fin as well as to aim at miniaturization of a condenser and increase of its heat exchange capacity by bending the tube wavily in the longitudinal direction, while bending the fins wavily like-wise in accord with the tube bend, and setting up it between tubes. CONSTITUTION:A tube 1 is bent so as to cause a long flat tube to be snaked at both ends crosswise, while it curves a setting part of a fin 2 up and down with a gentle curve. In addition, each of joints 12a, 12b is attached to both ends of the tube 1, while the inside of the tube 1 is partitioned into plural numbers of passages 11 with partitioned walls 10. On the other hand, the fin 2 is made up of bending a sheet wavily in accord with the bend of the tube 1, while it is set up between tubes 1 so as to cause the crest part 3 and root part 4 to come into contact with the tube respectively. In addition, a louver 8 is installed in the fin 2, thereby enlarging a contact area with a wind. With this constitution, each length of the tube 1 and the fin 2 is substantially extended in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to improvements in condensers used in air conditioners for automobiles and the like, and particularly to improvements in their tubes and fins.

(Prior art) As shown in Fig. 6, in the condenser of an air conditioner, the heat of the refrigerant flowing in tube A is transferred to tube A while flowing inside tube A, and from tube A to tube A. 4
The air is transmitted to the fins B arranged and fixed between them, and is radiated to the outside by the air blast H.

In the conventional tube A, a long flat tube C is bent in a meandering manner as shown in Fig. 6, and the ridges E and valleys F of the wavy fins B are formed between the straight parts of the tube A. It is placed so as to be in contact with A, and is fixed by brazing or the like.

(Problems to be Solved by the Invention) In order to increase the heat exchange capacity of conventional air conditioner condensers, it is necessary to increase the length of tube A and fin B. Since the part where fin B is attached is straight,
The problem was that the capacitor core was large.

Furthermore, when the tubes A and fins B are shortened in order to downsize the capacitor, there is also the problem that the heat exchange capacity becomes smaller.

(Object of the Invention) An object of the present invention is to provide an air conditioner condenser that has a better heat exchange rate than conventional air conditioner condensers.

(Means for solving the problem of spacing) As shown in FIG. 1, the air conditioner condenser of the present invention has wavy fins 2 arranged and fixed between tubes 1 which are separated by an appropriate distance. In the capacitor core, the tube 1 is bent in a wave shape in the longitudinal direction,
It is characterized in that the fins 2 are bent to match the bending of the tubes 1 and fixed between the tubes 1.

(Function) In the air conditioner condenser of the present invention, the tube L and the fins 2 are bent in a wavy manner as shown in FIG. Since the capacitors 2 can be made longer than conventional capacitors, the area exposed to the wind becomes larger, and a capacitor of the same size as a conventional capacitor has a large heat exchange capacity.

If the lengths of the duplex L and fins 2 are made the same as those of the conventional ones, the capacitor core will be made smaller by the amount that they are bent, and the area exposed to the wind will not change. The upper surface 1a, l of the tube l is more wavy than when the tube l is straight.
Since wind can easily hit the capacitor (b), a heat exchange rate higher than that of conventional capacitors can be obtained even though the capacitor is small.

(Example) FIGS. 1 and 2 show an example of the air conditioner capacitor of the present invention.

The symbol l shown in these figures is a tube. This tube l
A long flat tube is bent in a meandering manner at both ends in the lateral direction, and the portion of the tube l to which the fins 2 are attached is curved vertically in a gentle curve. By curving in this way, even if the tube l has the same length as a conventional straight tube, the apparent length of the duplex l will be shorter than if it were straight.

Joints 12a and 12b are attached to both ends of the tube 1, and the inside of the tube 1 is divided into a plurality of channels 11 by a partition wall 10, and the refrigerant supplied from the joint 12a flows through the channels 11. 11 so that it flows inside.

2 in FIG. 1 is a fin. This fin 2, like the conventional one, is formed by bending a thin plate 7 into a wave shape as shown in FIG. It is arranged between the tubes 1 so that the peaks 3 and valleys 4 are in contact with the tube 1, and is fixed to the tube 1 by brazing or the like. In this way, even if the fin 2 is the same length as a conventional straight one.

Similar to the tube 1, the apparent length of the fin 2 is shortened.

As clearly shown in FIG. 2, this fin 2 is provided with a looper 8 to increase the contact area of the wind. This looper 8 is made by making a notch between the peak 3 and the valley 4 as shown in Fig. 2, forming an extruded piece (looper) 8 between the notches, and extruding it alternately on both the front and back sides to make it protrude. .

FIG. 3 shows a different embodiment from the capacitor shown in FIG.

This is because the part of the tube l where the fins 2 are attached is bent vertically at a gentle angle (obtuse angle), and the fins 2 are also bent according to the bending, so that the peaks 3 and troughs 4 touch the tube l. It is placed between the duplexes 1 and fixed by brazing or the like.

FIG. 4 shows another embodiment of the capacitor of the present invention. This consists of two vibrators 15 and 16 with wavy curved tubes inserted at appropriate intervals. Joints 18a, 18b are attached to one longitudinal end of 15.16, and caps 19a, 19b are attached to the other end. In this capacitor, the 5th
As shown in the figure, the refrigerant sent from one joint 18a to the vibrator 15 is supplied to the upper three tiers of tubes l, from these tubes l it is sent to the other vibrator 16, and from the same vibe 16 to the lower three tiers of tubes. It is fed into the tube l, sent back to the vibrator 15, and sent out from the vibrator 15 to the three-stage tube l further below, where it flows in a meandering manner through a large number of tubes l.

In this way, there is no need to bend the long flat tube to make it meander as shown in FIG. 1, so the cost is reduced.

Note that the curve pitch, bending pitch, bending angle, etc. of the tube 1 are desirably selected so as to maximize the heat exchange efficiency.

(Effects of the Invention) The air conditioner capacitor of the present invention has the following effects.

■The tube L is bent in a wave-like manner in the longitudinal direction, and the fins 2 are also bent in a wave-like manner to match the bending of the tube L, so even though it is smaller than a conventional capacitor, it is the same or larger than the same capacitor. It is possible to achieve a heat exchange efficiency of 100%, and if the size of the capacitor is the same as that of a conventional condenser, a larger heat exchange volume can be obtained than that of a conventional condenser.

(2) Since the tube 1 is bent in a wavy manner, the wind easily hits the top surface 1a and the bottom surface 1b of the tube 1, making it easier to heat up compared to a straight tube, thereby further improving heat exchange efficiency.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the capacitor of the present invention;
Fig. 2 is a detailed view showing how the fins are attached to the tube, and Fig. 3 is a side view showing another embodiment of the capacitor of the present invention.
FIG. 4 is a perspective view showing another embodiment of the same capacitor, and FIG.
The figure is an explanatory diagram showing the flow of refrigerant in the same condenser, and FIG. 6 is a perspective view of a conventional condenser. 1 is tube 2 is fin

Claims (1)

[Claims] In an air conditioner condenser in which wavy fins are arranged and fixed between tubes separated from each other by an appropriate distance, the tube 1 is bent in a wavy manner in the longitudinal direction, and the fins 2 are bent in accordance with the bending of the tube 1. An air conditioner condenser characterized by being bent into a wave shape and fixed between tubes.