JPH01273884A - Sealed-type compressor - Google Patents

Abstract

PURPOSE:To restrain the rolling of a compressor body while promoting its miniaturization for achievement of compactness and less defective air gap for the compressor by mounting at least one supporting device on the cylinder head of the sealed-type compressor used for refrigerators etc. CONSTITUTION:A compressor body 6 comprises a motor component 4 and a compressor component 3 mounted on one side and the other side of a frame 2 respectively, and is elastically supported by a supporting device 9, coil spring etc., in a sealed case 10. At least one supporting device 7 is mounted on the cylinder head 14 of the compressor component 4 to decrease the rolling of the compressor body 6.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a hermetic compressor used in refrigerators, freezer showcases, and the like.

(b) Conventional technology Conventionally, this type of hermetic compressor
As disclosed in the above publication, a compressor main body is constructed by mounting an electric motor section on the lower side of the frame and a compressor section on the upper side, and three upper support sections are provided on the frame, 3 in a sealed case
Three lower support parts are provided, and three coil springs are inserted into these upper and lower support parts to elastically support the compressor main body within the closed case. Here, the frame and the motor section are connected by fixing the stator core to the frame using four bolts that are inserted into the bolt insertion holes of the stator core from below and screwed into the mounting legs of the frame. It is.

(C) Problems to be Solved by the Invention However, according to the above configuration, all of the upper support parts constituting the support device are provided in the frame, so if the support area is increased to obtain stable support, the frame There was a problem in that the body became larger, leading to an increase in the weight and size of the compressor. Also, normally, the horizontal movement of the compressor can be controlled by placing part of the frame against the inner wall of the sealed case, but in the above configuration, the stator core and frame are fixed only by the tightening force of the bolts. Therefore, when the frame collides with the closed case during transportation, the stator core tends to shift laterally, and there is a problem that starting performance becomes poor due to air gap defects in the motor section.

The present invention has been developed in view of these points, and it is possible to secure a large supporting area without increasing the size of the frame, thereby reducing the horizontal vibration of the compressor body, and to reduce the horizontal vibration of the compressor body in the event of a collision between the body and the sealed case. The purpose of the present invention is to provide a compressor that is small and has good startability by reducing air gap defects in the compressor.

(d) Means for Solving the Problems The present invention comprises a compressor main body by mounting an electric motor section on one side of a frame and a compressor section on the other side, and supporting this main body by a support device such as a coil spring. The compressor is elastically supported within a closed case, and at least one support device is attached to the cylinder head constituting the compressor section.

(f) Function The hermetic compressor of the present invention has the above-described configuration, and can secure a large support area for the compressor body without increasing the size of the hermetic case, thereby reducing the horizontal vibration of the compressor body and compressing the compressor. It minimizes the impact caused by the contact between the compressor body and the sealed case when starting, stopping, or transporting the machine, and prevents air gap defects caused by misalignment of the motor.

(f) Example Embodiments of the present invention will be described below based on the drawings.

1 has a compressor section 3 attached to the upper part of a frame body 2 and an electric motor section 4 attached to the lower part thereof, and connects these two parts 3 and 4 with a rotating shaft 5 to constitute a compressor main body 6, which will be described later. This is a hermetic compressor that is elastically supported within a hermetic case 10 by three support devices 7, 8, and 9. The compressor section 3 is composed of a cylinder 11 attached to the upper surface of the frame 2, a piston 12 that reciprocates within the cylinder, a valve plate 13 and a cylinder head 14 that close the open end of the cylinder. . The cylinder head 14 includes a base plate 15 and a cover member 16 formed by press working of sheet metal.
The lower half thereof protrudes below the cylinder 11. Reference numerals 7, 8, and 9 designate three support devices that are arranged approximately 120° apart from each other around the axis of the rotating shaft 5 and elastically support the compressor main body 6. 2 welded to the bottom edge
The upper retainer 2 is protruded from the lower surface of the stator 21 using the upper retainers 18 and 19 and the heads of the bolts 20.
2, two lower retainers 25 and 26 provided on the mounting brackets 23 and 24 welded to the lower inner wall of the sealed case 10, and a lower retainer 27 welded to the bottom wall of the sealed case 10, and the upper and lower parts of these three sets. It is composed of three coil springs 2B and 29.30 fitted into a retainer.

In the hermetic compressor configured in this way, two of the three support devices 7 and 8 are disposed directly below the cylinder head 14 that protrudes laterally from the cylinder 11, so that the hermetic case 10 It is possible to secure a large supporting area for the compressor main body 6 by using the empty space of the case without increasing the size of the case, and it is possible to reduce the horizontal vibration of the compressor main body 6, and to prevent the compressor from starting and stopping. Even if the compressor main body 6 collides with the closed case 10 during transportation, etc., the impact at the time of the collision can be alleviated, thereby preventing air gap defects in the electric motor section 4 due to lateral displacement of the stator 21.

Further, in this embodiment, in the event of a collision, the cylinder head 14 made of sheet metal is applied to the closed case 10 to suppress the horizontal vibration.Moreover, since the head 14 is supported by fill springs 28 and 29, the head 14 The elastic action of both the coil springs 28 and 29 absorbs and alleviates the impact, thereby promoting the above-mentioned effect of preventing the stator 21 from shifting laterally.

Although this embodiment has been described with two supporting devices attached to the cylinder head, the same effect can be obtained even with just one supporting device, and this does not deviate from the present invention in any way.

(g) Effects of the Invention As described above, according to the present invention, a large support area for the compressor body can be secured without increasing the size of the sealed case, and while promoting downsizing of the compressor, the support area of the compressor body can be increased. It is possible to provide a compressor that suppresses horizontal vibration and is small and has few air gap defects.

[Brief explanation of the drawing]

FIG. 1 is a side vertical sectional view of a hermetic compressor showing an embodiment of the present invention, and FIG. 2 is a front vertical sectional view thereof. 2... Frame body, 3... Compressor section, 4... Electric motor section, 6... Compressor main body, 7, 8.9... Support device, 10... Sealed case, 14. ··cylinder head.

Claims (1)

[Claims] (1) The compressor body is constructed by attaching the electric motor part to one side of the frame and the compressor part to the other side, and this main body is elastically supported in a sealed case by three or more supporting devices such as coil springs. 1. A hermetic compressor, characterized in that at least one support device is attached to a cylinder head constituting the compressor section.