JPS6010668Y2 - Compressor strainer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a strainer installed in a gas passage of a compressor.

In general, in air conditioners, if dust or foreign matter in the refrigerant circuit gets into the compressor, especially a rotary compressor, it can cause the compression mechanism to shut down or crack the valve. was prevented.

As shown in FIGS. 1 and 2, a conventional strainer 1 is made of a fine wire mesh 2 formed into a bag shape, and the opening of the strainer is wrapped in a metal plate to form a cap part 3, a waist wire mesh 2, and a cap 3. Strainer 1 is created by integrating them.

Further, the cylindrical gas passage 4 has a different diameter portion 5, into which the mouthpiece 3 of the strainer 1 is inserted to serve as a stopper when inserted in the axial direction.

If both the gas passage 4 and the strainer mouthpiece 3 are formed circularly, the strainer and the gas passage must be installed with a certain degree of strength, so the diameter a of the strainer mouthpiece 3 of the strainer 1, It is necessary to strictly control the internal pressure dimension A4 of the gas passage 2, and there is a drawback that the cost is high.

Also, the dimensional accuracy is roughly 1. In such a case, the strainer 1 may not be able to enter the gas passage, or if inserted with excessive force, the gas passage 4 may be damaged and chips may be generated, or the strainer 1 and the gas passage 4 may become fixed. Otherwise, there was a fear that the strainer 1 would vibrate in the axial and radial directions and wear out during operation.

The present invention aims to eliminate the above-mentioned disadvantages and provides a strainer that is inexpensive and can be installed reliably.

The invention will now be explained with reference to illustrated embodiments.

In FIGS. 5 and 6, reference numeral 1 denotes a strainer, in which a wire mesh 2 is formed into a bag shape as in the conventional structure, the opening of which is wrapped with a metal plate to form a mouthpiece 3, and this mouthpiece and the wire mesh 2 are formed into a bag shape. However, in this invention, the shape of the mouthpiece is changed to the major axis dimension 3.
It has an elliptical shape with as minor axis dimension 3b.

In this case, the a and 6 dimensions are the circumferential length of the ellipse 12 = W 12 (a''+b'') (approximate formula) is slightly smaller than the circumferential length of the gas passage 2 1□ = 2wA, and the The major diameter dimension 3a is set to be slightly larger than the diameter A of the gas passage 4.

Next, to describe the operation, since the circumference of the mouthpiece 3 of the strainer 1 is slightly smaller than the circumference of the gas passage 4, the strainer 1 can be attached to the gas passage 2, and the strainer 1 can be attached to the mouthpiece 3 of the strainer 1. Since the long diameter dimension 3a of the strainer 1 is larger than the diameter of the gas passage 4, it can be attached to the gas passage 4 with a predetermined tightening margin, and since there is a spring back of the mouthpiece 3 of the strainer 1, it can be securely fixed.

Since the present invention is configured as described above, the dimensions of the gas passage and the mouthpiece of the strainer are not particularly strictly controlled, and the strainer can be reliably attached to the gas passage at low cost.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a conventional strainer, Fig. 2 is a front view of Fig. 1, Fig. 3 is a sectional view of the gas passage, and Fig. 4 is a sectional view showing the strainer attached to the gas passage. FIG. 5 is a side sectional view of the strainer according to the present invention, and FIG. 6 is a front view of FIG. 5. Note that the same reference numerals in the figures indicate the same or corresponding parts. In the figure, 1 is a strainer and 3 is a mouthpiece.

Claims (1)

[Scope of utility model registration request] In a compressor in which a strainer is attached to a cylindrical gas passage, if the mouthpiece of the strainer is elliptical and the length of the elliptical part is slightly shorter than the circumference of the cylindrical part to which the strainer is attached, the major axis of the ellipse is A strainer for a compressor characterized by having a diameter slightly larger than that of the upper cylindrical part.