JPH08324229A - Chilling unit - Google Patents

Abstract

PURPOSE: To provide a capacitor by which the number of part items is reduced and workability is improved and which can dispense with an installing space and has a function of a receiver dryer. CONSTITUTION: Three shaft directional hole parts 17a, 17b and 17c are formed in an outlet header pipe 16 of a capacitor 15 of a mutiflow type, and end parts of these hole parts 17a, 17b and 17c are communicated with each other, and a refrigerant passage 18 to pass a refrigerant is formed. A drying agent 13 is sealed at least in one of the hole parts 17a, 17b and 17c, and dust and moisture mexed in the refrigerant are removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device in which a header pipe of a condenser has a function of a receiver dryer.

[0002]

2. Description of the Related Art Many automobiles are equipped with a cooling device for sending cool air or adjusting the humidity into the passenger compartment. Such a cooling device will be described with reference to FIG. As shown in the figure, the cooling device 1 is roughly composed of a compressor 2, a condenser 3, a receiver dryer 4 and an evaporator (not shown), and circulates the refrigerant in a refrigeration circuit by connecting them with a pipe 5 or the like. The heat is exchanged for cooling.

The condenser 3 cools and liquefies the high-temperature and high-pressure refrigerant that has been compressed by the upstream compressor 2 into a gaseous state and flows in. An example of the condenser 3 is shown in FIG. There is a shape as shown in. This one has fins 6 on the outer wall to prevent overheating.
A plurality of refrigerant tubes 7 provided with are arranged horizontally and in parallel, and cylindrical header pipes 8 are inserted into both ends of the tubes 7 and fixed by brazing. It is called a flow type condenser.

When the header pipe 8 and the refrigerant tube 7 are connected in this manner, the refrigerant tubes 7 communicate with each other, and a refrigerant flow path as shown by an arrow A is formed. In the figure, reference numeral 9 is a refrigerant inlet provided in the header pipe 8, and reference numeral 10 is a refrigerant outlet.

Further, the receiver dryer 4 is a condenser 3
The container is a container for storing the refrigerant liquefied in (2) separated from the air bubbles, and supplies the condensed liquid refrigerant to a downstream evaporator (not shown) in response to a request for cooling load. As shown in FIG. 7, the structure is such that a receiver tube 12 is vertically installed in a container body 11, a desiccant 13 is arranged, and a filter 14 is attached to the bottom. The desiccant 13 removes dust and water mixed in the circulating refrigerant. The receiver dryer 4 and the outlet 10 of the condenser 3 are connected to the pipe 5.
Connected by.

A condenser provided with a liquid receiver is disclosed in Japanese Utility Model Laid-Open No. 53-18668. What is disclosed in this publication is that a liquid receiver formed by superposing a plurality of molding plates is integrally provided downstream of the lower part of the tube of the condenser.

Further, as a condenser for an automobile air conditioner, there is one disclosed in Japanese Patent Laid-Open No. 6-143991. What is disclosed in this publication is a multi-flow type condenser in which a closed tank storing a liquid refrigerant is attached to an outlet portion of a header pipe.

[0008]

In the prior art described above, since the receiver dryer to which the capacitor is connected is provided separately from the capacitor, there is a problem that the number of parts is increased and the work efficiency at the time of mounting is lowered. there were. Further, if the receiver dryer is a separate component, the installation space is required accordingly, and if the installation space is small, the installation location is also restricted accordingly.

The condenser provided with a receiver disclosed in Japanese Utility Model Laid-Open No. 53-18668 has a receiver integrally formed in a lower part of the condenser by stacking a plurality of stages. Therefore, there is a possibility that the condenser becomes high and the engine compartment becomes large.

Further, the condenser of the air conditioner for an automobile disclosed in Japanese Patent Laid-Open No. 6-143991 has a closed tank for storing the liquid refrigerant attached to the outlet portion of the header pipe. There is a problem that the part becomes complicated and the space is required accordingly.

The present invention has been made in order to solve the above-mentioned conventional problems. A header pipe of a capacitor is provided with a function of a receiver dryer to reduce the number of parts,
An object of the present invention is to provide a cooling device that improves workability and eliminates a receiver dryer installation space.

[0012]

As a means for solving the above problems, the present invention is a cooling system in which a condenser formed of a refrigerant tube and header pipes connected to both sides of the refrigerant tube is interposed in a refrigeration circuit. In the device, a plurality of axial holes are formed in the header pipe on one side of the capacitor, the ends of the holes are communicated with each other, and a refrigerant passage through which a refrigerant passes is formed in the header pipe. A desiccant is enclosed in at least one of the plurality of holes.

[0013]

In the present invention, a plurality of axial holes are formed in the header pipe on one side of the condenser inserted in the refrigeration circuit, and the plural holes are formed in the refrigerant passage through which the refrigerant passes. , The ends of the plurality of holes are communicated with each other. Further, in the refrigerant passage, in order to remove dust and water of the refrigerant flowing from the condenser, a desiccant is enclosed in one of the holes. Then, in the cooling passage, the refrigerant is separated into gas and liquid, and only the liquid refrigerant is discharged from the header pipe.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 1 by assigning the same reference numerals to the same members as those in FIGS. FIG. 1 shows a condenser 15 provided in a refrigeration circuit of an automobile air conditioner. The condenser 15 is of a multi-flow type in which a normal header pipe 8 is attached to one of the refrigerant tubes 7 arranged horizontally and in parallel and a multifunctional outlet header pipe 16 is attached to the other. Reference numeral 6 is a fin 6 provided on the outer peripheral wall of the refrigerant tube 7 for preventing overheating.

Further, the outlet header pipe 16 has
As shown in FIG. 2 and FIG. 3, three holes 17 are formed in the axial direction, and in the holes 17, the first hole 17a provided on the refrigerant tube 7 side has a normal header 17a. The function of the pipe 8 is provided, and the desiccant 13 for removing the dust and water of the refrigerant is enclosed in the second hole 17b provided at the center so as to have the function of the receiver dryer and the most downstream side. Third hole part
It is a 17c with a pipe function. Although the desiccant 13 was enclosed in 17b in the central hole, the third hole 17c
Or the second and third holes 17b and 17c.

As shown in FIG. 1, the three holes 17 formed in the outlet header pipe 16 are such that the lower part of the first hole part 17a and the lower part of the second hole part 17b communicate with each other. The upper part of the second hole 17b and the upper part of the third hole 17c are communicated with each other.
A book coolant passage 18 will be formed.

In FIG. 2, reference numeral 19 is a sight glass for visually confirming the amount of the refrigerant and the flow state of the refrigerant. Further, in FIG. 1, reference numeral 9 is a refrigerant inlet, and reference numeral 10 is a refrigerant outlet.

Although the outlet header pipe 16 has a round cross-section, the outlet header pipe 16 does not have such a shape, and the outlet header pipe has an elliptical shape close to a circle, or the outlet header pipe 20 has a rectangular shape as shown in FIG. Good. In addition, add 3 holes 17 to the outlet header pipe 16.
Although it is formed as a book, it may be two or four.
Further, when it is desired to discharge the refrigerant from the upper part due to the peripheral layout, as shown in FIG. 5, four holes 17 may be formed to form the refrigerant passage 18, and the refrigerant outlet 10 may be provided on the upper part. Good.

In this embodiment, as described above, three axial holes 17a, 17b, 17c are formed in the outlet header pipe 16 of the condenser 15 inserted in the refrigeration circuit, and these three holes are formed. The upper and lower parts of the parts 17a, 17b, 17c are communicated with each other to form the refrigerant passage 18, and the second hole part in the central part is formed.
Since the desiccant 13 is enclosed in 17b, the refrigerant flowing from the refrigerant inlet 9 into the header pipe 8 flows through the refrigerant tube 7 into the first hole portion 17a of the outlet header pipe 16, and further, , Out of the refrigerant outlet 10 through the refrigerant passage 18.

At this time, the desiccant 13 removes dust and water from the refrigerant in the second holes 17b. And
Inside the refrigerant passage 18, the refrigerant is separated into gas and liquid, and only the liquid refrigerant flows out from the outlet header pipe 16.

[0021]

According to the present invention, since the ends of the axial holes formed in the header pipe on one side of the condenser are communicated with each other, the refrigerant passage can be formed by the holes. The refrigerant can be passed through the refrigerant passage. Also,
Since the desiccant is enclosed in at least one of the plurality of holes, it is possible to remove dust and water mixed in the circulating refrigerant. Then, the refrigerant can be separated into the gas and the liquid in the refrigerant passage in the header pipe, and only the liquid refrigerant can be discharged from the header pipe. This allows the header pipe to have the function of a receiver dryer.

[Brief description of drawings]

FIG. 1 is a sectional front view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the outlet header pipe of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a cross-sectional view showing another shape of the outlet header pipe of the present invention.

FIG. 5 is a cross-sectional view of an outlet header pipe having four holes formed according to the present invention.

FIG. 6 is a perspective view for explaining the cooling device.

FIG. 7 is a schematic view showing a conventional condenser and receiver dryer.

[Explanation of symbols]

 7 Refrigerant tube 13 Desiccant 15 Condenser 16 Outlet header pipe 17 Hole 18 Refrigerant passage

Claims (1)

[Claims] 1. A cooling device having a condenser formed of a refrigerant tube and header pipes connected to both sides of the refrigerant tube in a refrigeration circuit, wherein an axial hole is formed in the header pipe on one side of the condenser. A plurality of holes are formed, the ends of the holes are communicated with each other to form a refrigerant passage through which a refrigerant passes in the header pipe, and a desiccant is enclosed in at least one of the holes. A cooling device characterized by the above.