JP2633336B2 - Horizontal rotary compressor - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal rotary compressor used for a refrigerating device of a refrigerator-freezer.

2. Description of the Related Art Hereinafter, a conventional horizontal rotary compressor will be described with reference to the drawings. 2 and 3 show published patent applications 62
1 shows a horizontal rotary compressor shown in JP-A-13095, wherein reference numeral 1 denotes a substantially cylindrical hermetic container which is long in the lateral direction, and includes a motor M comprising a stator 2 and a rotor 3;
The compression device C driven by is accommodated. Reference numeral 4 denotes oil, which accumulates below the closed container 1. Reference numeral 5 denotes a cylinder, 6 denotes a main side housing, and 7 denotes a sub side housing, which are in close contact with both sides of the cylinder 5 to form a compression chamber 8. Reference numeral 9 denotes a shaft connected to the rotor 3 and an eccentric portion 10.
Having. Reference numeral 11 denotes a roller fitted to the eccentric portion 10 and inscribed in the compression chamber 8. Numeral 12 denotes a vane, which partitions the compression chamber 8 into high and low pressure sides by being pressed against the roller 11 by a spring 13. Reference numeral 16 denotes a discharge valve provided in the sub side housing 7. Reference numeral 17 denotes a partition plate interposed between the sub-side housing 7 and the cup-shaped discharge cover 17, and the partition plate 17 forms a cup-shaped portion of the discharge cover 17 as a discharge chamber 17a. A curved oil pipe 15 is fixed to the center of the discharge chamber 17a, and is integrated with the discharge cover 17, so that the auxiliary side housing 7
Is lightly press-fitted and fixed to the convex portion 7a. The oil pipe 15
The coil spring 14 fixed to the crankshaft 9 is disposed inside the oil 4 at one end thereof.

In the above-described configuration, the rotation of the rotor 3 is transmitted to the crankshaft 9, and the coil spring 14 fixed to the crankshaft 9 moves the discharge cover to the sub side housing 7.
The oil 4 is rotated while being kept in a curved shape by being regulated by the oil pipe 15 fixed integrally with the oil pipe 15, and the oil 4 is sequentially supplied to the crankshaft 9 by the lead of the coil spring 14. The refrigerant compressed in the compression chamber 8 is silenced by being discharged from a discharge valve 16 provided in the sub side housing 7 into a discharge chamber 17a through a small hole (not shown) provided in a partition plate 18. It is discharged from the discharge cover 17 into the closed container 1.

However, in the above configuration, depending on the method of fixing the discharge chamber 17a and the sub-side housing 7 to the convex portion 7a, the discharge gas is blown into the oil pipe 15, and the coil spring 14 The fed oil 4 is blown back, and the oil supply to the crankshaft 9 becomes insufficient. Therefore, the discharge chamber 17a and the convex portion 7a of the side housing 7 are press-fitted to seal each other. However, the press-fitting of the discharge chamber 17a causes deformation such as shrinkage of the inner diameter portion of the sub-side housing or warpage of the end face, which causes a problem that reliability is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a highly reliable horizontal rotary compressor without deformation of a sub side housing.

Means for Solving the Problems In order to solve the above problems, a horizontal rotary compressor according to the present invention includes a discharge fixed to the sub-side housing so as to cover a discharge valve provided on a side opposite to the cylinder surface of the sub-side housing. The cover and the coil spring of the oil supply pump provided on the side opposite to the motor of the shaft are accommodated, and a support portion is fixed to one end, and the other end is an oil pipe opened into the oil in the sealed container, the end face of the discharge cover. The support part is screwed or fixed to the screw hole cut into the prepared hole by burring.

According to the present invention, since the discharge cover and the oil pipe can be fixed without being pressed into the sub-side bearing by the above configuration, the sub-side housing is not deformed.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same parts as those in the related art will be described using the same reference numerals, and the same parts in the configuration and operation will be omitted.

FIG. 1 is a sectional view of a horizontal rotary compressor according to an embodiment of the present invention, and FIG. 2 is a side view. In FIG. 1, 5
Is a cylinder, 6 is a main side housing, 8 is a compression chamber, 14
Is a coil spring, 18 is a partition plate, 19 is a sub-side housing, and the inner and outer diameters of the cylindrical bearing 19a on the opposite side of the cylinder 5 are stepped. Reference numeral 20 denotes a discharge cover having a cup-shaped chamber portion 20a, and the chamber portion 20a has a plurality of threaded holes 20b cut into a pilot hole formed by burring. There is a round hole in the center of the chamber section 20a,
The sub-side housing 19 is fitted to an outer diameter stepped portion of the bearing portion 19a. The depth of the chamber portion 20a of the discharge cover 20 is smaller than the height of the outer stepped surface of the bearing portion 19a of the sub side housing 19 from the partition plate 18. Reference numeral 15 denotes an oil pipe to which a support 21 is fixedly attached at one end, and the support 21 is provided with a mounting hole, and is fixedly fastened to the chamber portion 20a of the discharge cover 20 by a bolt 22. . The step height of the outer diameter portion of the bearing portion 19a of the side housing 19 on the side opposite to the shaft 5 is larger than the plate thickness of the discharge cover 20. 23 is a head bolt.

In the above configuration, when the partition plate 18 and the discharge cover 20 are overlapped on the sub side housing 19 and fastened to the main side housing 6 with the head bolt 23, the round hole provided in the chamber portion 20a is Bearing part of housing 19
Adhere to the 19a outer diameter stepped part. Oil pipe 15 in the above condition
When the support 21 is tightened to the chamber portion 20a with a bolt 22, the sub-side housing 19 of the support 21 is
The side is in close contact with the end face of the bearing portion 19a on the opposite side of the cylinder 5.

Therefore, the refrigerant gas discharged from the compression chamber 8 is discharged from the discharge cover 20 without leaking from the discharge chamber section 20a. The oil 4 supplied from the oil pipe 15 by the lead of the coil spring 14 is supplied to the crankshaft 9 without leaking from the bearing 19a.

Effect of the Invention As described above, the present invention provides a plurality of burring holes formed in the discharge cover provided on the side opposite to the cylinder surface of the sub-side housing by screwing the support portion of the oil pipe to the screw hole or the bolt. The oil pipe is securely fixed and the deformation of the sub side housing can be eliminated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a horizontal rotary compressor showing one embodiment of the present invention, FIG. 2 is a left side view of the compression element of FIG. 1, and FIG. FIG. 4 is a sectional view of the rotary compressor, and FIG. 4 is an enlarged sectional view of a compression section of FIG. 14 ... Coil spring, 15 ... Oil pipe, 16 ... Discharge valve, 19 ... Secondary side housing, 20 ... Discharge cover, 20b ... Screw hole, 21 ... Support, 22 ... Screw.

Claims (1)

(57) [Claims] An oil is stored in a closed container,
An electric element comprising a stator and a rotor, and a compression element, wherein the compression element is fitted to the shaft having an eccentric portion, a cylinder forming a compression chamber concentrically with the rotation center of the shaft, and the eccentric portion, A roller that rolls in the compression chamber, a vane that presses against the roller to partition the compression chamber into a high pressure side and a low pressure side, and an electric element that seals both side surfaces of the cylinder and axially supports the shaft. A main side housing on the side, a sub side housing on the side opposite to the electric motor, a discharge valve provided on the side opposite to the cylinder side of the sub side housing, and a discharge cover fixed to the sub side housing so as to cover the discharge valve. ,
A refueling pump provided on the side opposite to the motor of the shaft, wherein the refueling pump houses a coil spring fixed to one end of the shaft, the coil spring, a support part fixed to one end, and another end. Is provided with an oil pipe opened in the oil, provided with a plurality of prepared screw holes formed by burring on an end face of the discharge cover, and tightening the support portion to the discharge cover with screws or bolts. A horizontal rotary compressor characterized by being fixedly attached.