JP2776617B2 - Fin tube type heat exchanger - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fin tube type heat exchanger used in a cooling system of an air conditioner, a refrigerator, etc., for transferring heat between a refrigerant and a fluid such as air. is there.

2. Description of the Related Art In recent years, heat exchangers have been required to be compact and have high performance, and heat transfer performance has been divided into many pipes within the same heat exchanger. Heat exchangers have been developed, but improvements in production are needed.

Hereinafter, an example of a conventional fin tube type heat exchanger will be described with reference to FIG. 3 and FIG. FIG. 3 shows a conventional fin tube heat exchanger, and FIG. 4 shows a detailed view of FIG. The fin tube type heat exchanger 1 constitutes one heat exchanger row as an air flow inflow side, and the fin tube type heat exchanger 2 constitutes one heat exchanger row as an air flow outflow side. These two fin tube heat exchangers 1,2
As shown in FIG. 3, the left side plate 15 and the right side plate 16 have a structure in which the fin tube type heat exchanger and the left side plate 15 and the right side plate 16 are integrated.

SUMMARY OF THE INVENTION However, in the above-described configuration, in manufacturing, when the pipe is expanded by the mandrel, the heat transfer tube groups 11 and 12 of the fin tube type heat exchangers 1 and 2 are curved, and the fin tube type heat exchanger is bent. It is difficult to provide a uniform spacing between the fin groups 13 and 14 in the longitudinal direction of the exchangers 1 and 2. In addition, due to the curvature of the heat transfer tube groups 11 and 12, a portion where the fins of the fin groups 13 and 14 overlap occurs,
There has been a problem that the factor for separating heat due to the temperature difference between the fin tube type heat exchangers 1 and 2 is significantly reduced, and the performance is reduced. Then, the present invention solves the above-mentioned problems,
An object of the present invention is to provide a fin tube type heat exchanger satisfying quality.

Means for solving the problem The fin tube heat exchanger of the present invention, a plurality of rows of heat transfer tube groups in which a refrigerant flows, and inserted into the heat transfer tube group,
A fin tube heat exchanger in which a fin group in which an air flow flows between the fin groups, and a fin group in a row on the air flow inflow side of the fin group and a fin group in a row on the air flow outflow side of the fin group are divided. A fixing plate having a size equal to or larger than the two fins of the fin group in the row on the airflow inflow side and the fin group in the row on the airflow outflow side is provided.

In the above-described configuration, by inserting two rows of fixed plates between both end side plates, there is no contact between the fin groups due to the bending of the heat transfer tube portion due to the pressure at the time of expanding the mandrel in the longitudinal direction, and a uniform spacing is maintained. It is possible to obtain a uniform number without increasing the air resistance due to the overlapping of the fins, and to maintain the performance.

Embodiments FIGS. 1 and 2 show a two-row integrated fin tube type heat exchanger as an embodiment of the present invention.

11 is a group of heat transfer tubes in the row on the inflow side of the airflow B through which the refrigerant flows, 12 is a group of heat transfer tubes in the row on the outflow side of the airflow B through which the refrigerant flows, and 13 and 14 are the groups of heat transfer tubes 11, 12 Is the fin group of the row inserted into the row. The fin groups 13 and 14 are single-row fins and are divided. Reference numeral 15 denotes a left side plate integrated in two rows, 16 denotes a right side plate integrated in two rows, and 17 denotes a fixed plate integrated in two rows, which maintain a uniform interval in the longitudinal direction.

Next, the operation of the configuration of the present embodiment will be described. Left side plate
By inserting the fixing plate 17 in the approximate center of the right and left plates 16 and 15, the heat transfer tube groups 11 and 12 can be prevented from bending in the longitudinal direction and the uniform spacing of the fin groups 13 and 14 can be maintained. The curving causes the row fins to come into close contact with each other, thereby preventing a decrease in performance due to air resistance. Heat transfer tube groups 11, 12
There is no difference in the hole diameter of the fixed plate 17 through which the heat transfer tube groups 11, 12 and the fixed plate 17 are brought into close contact with each other, and even if there is some clearance.

Effect of the Invention As described above, the fin tube type heat exchanger of the present invention has two rows of fins and separates two rows from each other. It is possible to keep a uniform interval, and it is possible to secure performance by heat division.

[Brief description of the drawings]

FIG. 1 is a perspective view of a fin tube type heat exchanger showing one embodiment of the present invention, FIG. 2 is a sectional view of the fin tube type heat exchanger, and FIG. FIG. 4 is a perspective view, and FIG. 4 is a detailed view of a conventional fin tube type heat exchanger. 11,12 ... heat transfer tube group, 13,14 ... fin group, 15,16 ... side plate, 17 ... fixed plate.

Claims (1)

(57) [Claims] 1. A heat transfer tube group having a plurality of rows in which a refrigerant flows, and a fin group inserted into the heat transfer tube group and through which an airflow flows. A fin tube heat exchanger in which a group and a fin group in a row on an airflow outflow side are divided, and two fins of a fin group in the row on the airflow inflow side and a fin group in the row on the airflow outflow side are provided between both end plates. A fin tube type heat exchanger characterized by containing a fixing plate of a size equal to or greater than that of a heat exchanger.