JPH045977Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a refrigerant receiver used in cooling, refrigeration, and air conditioning equipment, and is particularly applicable to automobile cooling equipment (car coolers).
This invention relates to a refrigerant receiver.

[Prior Art] Generally, a cooling/refrigeration air conditioner is constituted by equipment as shown in FIG. That is,
The refrigerant in the refrigerant receiver 1 is transferred to the evaporator 3 by the expansion valve 2.
It is ejected into the interior, where it evaporates under isothermal and equal pressure conditions, absorbs heat from the outside, and is then adiabatically compressed by the compressor 4.
The refrigerant is cooled and condensed in the condenser 5 and returned to the refrigerant receiver 1 .

A refrigerant receiver is a container in which liquefied refrigerant is temporarily stored, and since the required amount of refrigerant constantly changes depending on outside air conditions and operating conditions, it has a function that can respond to load fluctuations. Furthermore, the refrigerant receiver has a function of removing moisture and dirt contained in the refrigerant.

For example, as shown in FIG. 4, the structure of the refrigerant receiver 1 includes a receiver body 6, a refrigerant inlet pipe 7, and a suction part 8a
refrigerant outlet pipe 8, sight glass 9,
It is equipped with a strainer 10 and a desiccant 11, and the amount of refrigerant 12 increases or decreases depending on the operation.

Conventionally, the refrigerant receiver 1 has been made of mesh or aluminum, but if moisture enters the refrigerant Freon, it will be corroded by hydrochloric acid or hydrofluoric acid generated by hydrolysis, and the external Needs painting
It had drawbacks such as being heavy.

In order to improve these drawbacks, the present inventors first proposed a refrigerant receiver made of synthetic resin (patent application
59−183264). As shown in FIG. 5, this synthetic resin refrigerant liquid receiver is formed by integrally joining a head part 6a and a bottom part 6b, which are separately molded, into a liquid receiver body 6, and includes a refrigerant inlet pipe 7 and a bottom part 6b. A refrigerant outlet pipe 8 having a suction part 8a is integrally molded with the head part 6a. In addition, the sight glass 9 can be easily attached by adhering or welding synthetic resins together, or by caulking the resin around the sight glass using ultrasonic waves, etc., and is lightweight, has excellent corrosion resistance, and is an inexpensive synthetic resin refrigerant. A liquid receiver was obtained.

[Problems to be solved by the invention] However, in the synthetic resin refrigerant receiver, the refrigerant inlet pipe 7 and the outlet pipe 8 are integrally molded with the head portion 6a, and the respective directions of the bent ends are fixed from the beginning. Fixed. Therefore, if it is necessary to change each direction, for example as shown in FIGS. 6a and 6b, a separate mold must be manufactured each time. In addition, when integrally molding is performed in this way, the structure of the head portion 6a becomes complicated and distortion is likely to occur during molding, and the head portion 6a and bottom portion 6b
It was difficult to maintain good dimensional accuracy of the joint, and there was a concern that the joint strength would decrease.

In view of the above circumstances, the present invention allows the directions of the bent ends of the refrigerant inlet pipe 7 and the outlet pipe 8 to be freely selected, has good dimensional accuracy during molding, and is strongly joined and integrated. The object of the present invention is to provide a refrigerant receiver made of synthetic resin.

[Means for solving the problems] The present invention has been made to achieve the above objectives,
The gist is that the refrigerant inlet pipe has its upper end bent laterally to open, and the refrigerant outlet pipe has a suction part that opens near the inner bottom of the liquid receiver, and the head part and bottom part are welded together. In a synthetic resin refrigerant receiver for cooling, refrigeration, and air conditioning equipment provided in the head of a bottle-shaped receiver main body, a refrigerant inlet pipe and/or a refrigerant outlet pipe molded separately from the head are attached to the head. The synthetic resin refrigerant receiver is formed by fixing and integrating the bent upper end portions into a desired direction.

[Specific structure and function of the invention] The present invention will be explained below with reference to the drawings.

FIG. 1 shows an embodiment of a synthetic resin refrigerant receiver according to the present invention, and the same parts as in FIG. 5 are given the same reference numerals and their explanations will be omitted.

This refrigerant liquid receiver has a head portion 6 of a liquid receiver main body 6.
a, bottom part 6b, refrigerant inlet pipe 7, refrigerant outlet pipe 8
are separately molded and then integrated by ultrasonic welding or the like, and insertion holes 13 and 14 for the refrigerant inlet pipe 7 and outlet pipe 8 are formed in the head portion 6a during molding. These insertion mounting holes 1
3 and 14, respectively, a refrigerant inlet pipe 7 and an outlet pipe 8
After inserting and welding them together in the desired direction, and setting the strainer and desiccant,
The head portion 6a and the bottom portion 6b are welded and integrated.
Therefore, the directions of the bent end openings of the refrigerant inlet pipe 7 and the outlet pipe 8 can be freely selected, making it possible to accommodate various air conditioners with different arrangements. In addition, the head portion 6a has a feed mounting hole 1 at the top.
3 and 14, and has a simple shape that is almost symmetrical with respect to the central axis, there is little distortion during molding, a product with high dimensional accuracy can be obtained, and it can be firmly joined to the bottom part 6b. I can do it.

FIG. 2 shows another embodiment of the present invention, in which only the refrigerant inlet pipe 7 is molded integrally with the head part 6a, the refrigerant outlet pipe 8 is molded separately, and the refrigerant inlet pipe 7 is molded separately.
It is integrally inserted and welded into the insertion mounting hole 14 formed during the molding of step (a).

In this case as well, the directions of the bent upper end openings of the refrigerant inlet pipe 7 and the outlet pipe 8 can be freely selected. Alternatively, the refrigerant outlet pipe 8 may be integrally molded with the head portion 6a, and the refrigerant inlet pipe 7 may be attached later.

[Effects] As described above, the synthetic resin refrigerant receiver according to the present invention is made by welding and integrating each part of a simple structure that was molded separately, so the dimensional accuracy of each molded part is It has many advantages, such as being able to perform accurate and strong welding, and being able to freely select the directions of the bent end openings of the refrigerant inlet and outlet pipes, allowing for different arrangements. .

[Brief explanation of the drawing]

1 and 2 are longitudinal cross-sectional views showing one embodiment of a synthetic resin refrigerant receiver main body according to the present invention, and FIG. 3 is a configuration diagram showing an example of a cooling system,
Fig. 4 is a vertical cross-sectional view showing an example of a refrigerant receiver in use, Fig. 5 is a longitudinal cross-sectional view of a conventional synthetic resin refrigerant receiver in use, and Figs. 6 a and b. 5 is a view corresponding to the line arrow view in FIG. 5, showing cases in which the bent ends of the refrigerant inlet pipe and the outlet pipe are oriented in different directions; FIG. 1... Refrigerant liquid receiver, 6... Liquid receiver body, 6a...
...Head part, 6b...Bottom part, 7...Refrigerant inlet pipe, 8...Refrigerant outlet pipe, 8a...Suction part, 13...
...Insertion and mounting hole for refrigerant inlet pipe, 14...Insertion and mounting hole for refrigerant outlet pipe.

Claims (1)

[Scope of utility model registration request] A refrigerant inlet pipe 7 whose upper end is bent laterally to open and a refrigerant outlet pipe 8 which has a suction part 8a which opens near the inner bottom of the liquid receiver are connected to the head part 6a.
In a synthetic resin refrigerant receiver for cooling, refrigeration, and air conditioning equipment, which is provided in the head portion 6a of the bottle-shaped receiver main body 6, which is formed by integrally welding the bottom portion 6b, the refrigerant receiver is made of a synthetic resin and has a bottom portion 6b that is welded together. The molded refrigerant inlet pipe 7 and/or refrigerant outlet pipe 8 are connected to the head part 6.
a, each direction of the bent upper end,
A synthetic resin refrigerant receiver that is fixed and integrated in a desired direction.