JPH0578612U - Capacitor - Google Patents

Abstract

(57) [Summary] [Purpose] To speed up the positioning of the header pipe and tube and prevent the heat exchange rate from decreasing. [Structure] A pair of header pipes 7, 7 are each formed in a semi-circular cross-section, a through hole 8 is provided on a flat side surface F of the header pipe 7, and the opening of the through hole 8 is attached to the end of the tube 2. The tube 2 can be attached to the inner wall surface of the header pipe 7, and the longitudinal direction of the opening of the through hole 8 is formed in a slit shape slightly smaller than the inner diameter of the header pipe 7 to allow the tube 2 to move. Positioned in the radial direction of the semicircle, and the end of the tube 2 and the header pipe 7
To minimize the gap between the inner wall surface and the inner wall surface facing each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a condenser used in an air conditioner of an automobile, particularly a parallel flow type condenser.

[0002]

[Prior Art]

 As an example of a condenser (condenser) that has been conventionally used for an air conditioner of an automobile, there is one shown in FIGS. 4 to 8, which shows a model called a parallel flow type.

In the figure, reference numeral 1 is a heat radiation fin, and the fin 1 is attached to the outer circumference of each of a plurality of tubes 2. The tube 2 is for passing a refrigerant (not shown) made of gas or liquid inside.

In the figure, 3 and 3 are a pair of header pipes. The header pipes 3 and 3 are arranged at both ends of each tube 2 and connect the tubes 2 so that they can communicate with each other. Each of the header pipes 3 and 3 has a circular cross section, and blind plugs 4 are fitted to the upper and lower ends thereof, respectively.

A plurality of through holes 5 are formed at predetermined intervals on one side surface of the pair of header pipes 3, 3 along the longitudinal axis of the header pipes 3, 3 at predetermined intervals. (See Figure 5).

The respective through holes 5 are for engaging the ends of the tubes 2 with each other so that the refrigerant communicates with the tubes 2, whereby the refrigerant is supplied from the inlet and then It is guided to the outlet through the header pipe 3 and each tube 2 (see Japanese Utility Model Laid-Open No. 32421/1993).

Further, an inlet part for receiving the supply of the refrigerant, an outlet part for discharging the refrigerant, a means for restricting the flow of the refrigerant, and a means for fixing the condenser to the vehicle body side (not shown) are not shown. ing.

In order to assemble the capacitor thus configured, first insert one end of the tube 2 into the through hole 5 of the one header pipe 3 and then insert the other end into the other header pipe 3. Repeatingly, all the tubes 2 are bridged between the pair of header pipes 3 and 3.

Next, the fins 1 are interposed between the tubes 2, and then the fins 1 and the tubes 2 are brazed in a furnace (not shown) to complete the assembly work of the capacitor.

[0010]

[Problems to be solved by the device]

 By the way, in the above-described capacitor, since the header pipe 3 has a circular cross-sectional shape, when the tube 2 is inserted into the through hole 5, as shown in FIG. The tube 2 is not positioned in the radial direction of the header pipe 3 until it abuts.

When the tube 2 is positioned in the radial direction of the header pipe 3 as shown in FIG. 7 and the gap between the end of the tube 2 and the inner wall surface 6 of the header pipe 3 is minimized, Circulation of the refrigerant is easily blocked.

Further, in order to provide a sufficient gap between the end portion of the tube 2 and the inner wall surface 6 of the header pipe 3 as shown in FIG. 8, the distance Δx is larger than the diameter of the header pipe 3 orthogonal to the insertion direction of the tube 2. When the tubes 2 are inserted into the through holes 5 only near the through holes 5, all the tubes 2 are not positioned in the left and right header pipes 3 and 3 directions in FIG.

Therefore, there is a problem in that the resistance value of the refrigerant flowing in the header pipe 3 increases, and the efficiency of heat exchange is reduced.

Therefore, the present invention provides a capacitor in which the tube 2 is positioned in the radial direction of the header pipe 3 and a sufficient gap is provided between the end portion of the tube 2 and the inner wall surface 6 of the header pipe 3. With the goal.

[0015]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a plurality of refrigerant tubes each having a heat-radiating fin attached to the outer periphery thereof, and the ends of the tubes are engaged with each other so that the refrigerant is mutually introduced into the tube. In a capacitor including a pair of header pipes having through holes for communicating with each other at a predetermined interval, each of the pair of header pipes has a semicircular cross section, and the header pipe has the flat side surface with the through holes. A slot is provided, and the opening of the through hole allows the end of the tube to abut against the inner wall surface of the header pipe, and the longitudinal direction of the opening is slightly smaller than the inner diameter of the header pipe. It has a configuration formed into a shape.

[0016]

[Action]

 With such a configuration, when the end of the tube is inserted from the opening of the through hole, the end immediately contacts the inner wall surface of the header pipe after the insertion, so that the tube is placed in the above half of the header pipe. It can be easily positioned in the radial direction of the circle, and at the same time minimizes the gap between the end of the tube and the facing inner wall surface of the header pipe.

[0017]

【Example】

 Hereinafter, a capacitor according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3, and the same members as those in FIGS. In the present invention, the cross section of each of the pair of header pipes 7, 7 is formed in a semicircular shape, and the through holes 8 are arranged on the flat side surfaces F, F of each header pipe 7, 7.

The opening of the through hole 8 is such that the end of the tube 2 can abut against the inner wall surface 9 of the header pipe 7, and the longitudinal direction of the opening of the through hole 8 is the inner diameter of the header pipe 7. It is formed in a slit that is slightly smaller than the rest.

When assembling the capacitor of the present invention configured as described above, first, one end of the tube 2 is inserted into the through hole 8 of the one header pipe 7. At this time, one end of the tube 2 immediately contacts the inner wall surface 9 of the header pipe 7 at an inward position by a distance Δy immediately after the insertion.

This allows the tube 2 to be easily positioned in the radial direction of the semicircle of the header pipe 7, and at the same time prevents the gap between one end of the tube 2 and the facing inner wall surface 9 of the header pipe 7 from being minimized. To do.

After that, inserting the other end of the tube 2 into the other header pipe 7 in the same manner as above is repeated, and all the tubes 2 are bridged between the pair of header pipes 7, 7. As a result, all tubes 2 are positioned in the left and right header pipes 7, 7 direction in FIG. At this time, the flat side surfaces F of the pair of header pipes 7, 7 are arranged to face each other.

As a result, the flat side surfaces F of the pair of header pipes 7, 7 are arranged to face each other. After that, the fins 1 are inserted between the tubes 2, and the fins 1 and the tubes 2 are brazed in the furnace. This completes the capacitor assembly work.

[0023]

[Effect of the device]

 Since the present invention is the capacitor configured as described above, at the time of assembly work, the tube can be easily positioned in the radial direction of the above-mentioned semicircle of the header pipe, and the working time can be shortened. Workability and productivity are improved.

Further, since the end portion of the tube and the inner wall of the header pipe are provided so as to be able to come into contact with each other, the reduction in strength is suppressed by the abutment, and the end portion of the tube and the inner wall surface of the header pipe facing each other are suppressed. To minimize the gap. As a result, the reliability of the refrigerant flowing in the header pipe is increased, that is, the reduction of the heat exchange rate is suppressed and the product reliability is improved.

[Brief description of drawings]

FIG. 1 is a front view schematically showing a capacitor according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a header pipe and a mounting bracket of the same capacitor.

FIG. 3 is a cross-sectional view showing a header pipe of the same capacitor.

FIG. 4 is a perspective view showing a conventional example.

5 is a perspective view showing a part of the header pipe of FIG. 4. FIG.

6 is a cross-sectional view showing the header pipe of FIG.

FIG. 7 is a plan view showing the header pipe of FIG.

FIG. 8 is a plan view showing a state different from FIG.

[Explanation of symbols]

 1 fin 2 tube 7 header pipe 8 through hole 9 inner wall surface F flat side surface

Claims (1)

[Scope of utility model registration request] 1. A plurality of refrigerant tubes each having a heat-radiating fin attached to its outer periphery, and through holes for engaging the respective ends of the tubes with each other to allow the refrigerant to communicate with each other at predetermined intervals. In a capacitor composed of a pair of drilled header pipes, the pair of header pipes each have a semicircular cross section, and the through holes are provided on the flat side surfaces of the header pipes. A capacitor, wherein an end of the tube is abuttable with an inner wall surface of the header pipe and the longitudinal direction of the opening is formed in a slit shape slightly smaller than an inner diameter of the header pipe.