JPH01372A - Hermetic electric compressor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

Conventional technology In recent years, compressors have become quieter due to market demands.
Along with this, various improvements have been made.

An example of a conventional compressor will be described below with reference to the drawings.

FIG. 3 is a sectional view showing the structure of a conventional compressor, and FIG. 4 is an enlarged sectional view of main parts of the conventional compressor.

In FIGS. 3 and 4, 61 is an electric element, and 62 is a compression element, which is elastically supported within a closed case 64 by a support spring 53. Reference numeral 66 denotes a frame constituting the compression element 52, which includes a holding part 69 that holds the main body 66 and the stator 67 of the electric element 51 with stator bolts 68, and a protrusion that is loosely fitted into the support spring 63 from above the support spring 63. 6o. The fit between the support spring 63 and the protrusion 60 is in the relationship D>d, where D is the inner diameter of the support spring 63 and d is the outer diameter of the protrusion 6o. Further, the upper end of the snapper 61 whose lower end is fixed to the inner surface of the sealed case 64 is attached to the support spring 5.
It is press-fitted into the lower end of 3. The operation of the conventional compressor configured as described above will be explained below.

As the electric element 61 rotates, the compression element 62 compresses the refrigerant. The vibrations generated at this time are absorbed by the support spring 63, making it difficult for them to be transmitted to the sealed case 64.

Problems to be Solved by the Invention However, in the above-described configuration, the protrusion ω and the support spring 63 are not press-fitted, so the protrusion 60 and the support spring 63 may become loose when the compressor is started or stopped.
This caused a problem in that the noise was caused by rubbing and was a source of noise, and the noise was dissipated outside the sealed case 64.

In view of the above problems, the present invention provides a quiet compressor that suppresses friction between the protrusion of the frame and the suspension spring.

Means for Solving the Problems In order to solve the above problems, the compressor of the present invention includes a support spring that elastically supports an electric element and a compression element in a sealed case, and a The frame includes a snapper whose upper end is press-fitted into the support spring and whose lower end is fixed to the inner surface of the sealed case, and the frame constituting the compression element holds the main body and the stator of the electric element with a stator bolt passing through the stator. and a protrusion that is press-fitted into the support spring from above the support spring.

With the above-described structure, the present invention supports the weight of the compression element and the electric element by the support spring, but even if the compression element and the electric element shake greatly when the compressor is started or stopped, the protrusion of the frame The upper ends of the springs and snappers are press-fitted into the support springs and do not rub against each other, so the noise level when starting or stopping is low.

EXAMPLE Hereinafter, a compressor according to an example of the present invention will be described with reference to the drawings. 1(8) is a cross-sectional view showing the structure of a compressor according to an embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of essential parts of the compressor according to an embodiment of the present invention.

In FIGS. 1 and 2, 1 is an electric element, and 2 is a compression element, which is elastically supported within a closed case 4 by a support spring 3. Reference numeral 5 denotes a frame constituting the compression element 2, which includes a holding part 9 that holds the main body 6 and the stator 7 of the electric element 1 with stator bolts 8, and a protrusion 10 that is press-fitted into the support spring 3 from above. It consists of The fit between the support spring 3 and the protrusion 10 is in the relationship o<a-D<0.3, where D is the inner diameter of the support spring 3 and d is the outer diameter of the protrusion 10. In addition, a snapper 1 whose lower end is fixed to the inner surface of the sealed case 4
The upper end of 1 is press-fitted into the lower end of support spring 3.

The operation of the compressor configured as described above will be described below with reference to FIGS. 1 and 2.

The upper end of the support spring 3 is press-fitted into the protrusion 10 provided on the frame 6 of the compression element housed in the sealed case 4, and the lower end is press-fitted into the upper end of the snapper 11 provided on the inner surface of the sealed case 4. The compression element 2 and the electric element 1 are elastically supported by the elasticity of the support spring 3, and vibrations generated in the compression element 2 and the electric element 1 are hardly transmitted to the closed case 4.

Also, when starting or stopping the compressor, the protrusion 1 of the frame
o and the support spring 3 will not rub against each other.

As described above, according to this embodiment, a support spring that elastically supports the electric element and the compression element is provided in the sealed case;
A snapper whose upper end is press-fitted into the support spring from below the support spring and whose lower end is fixed to the inner surface of the sealed case, and the frame constituting the compression element connect the main body and the stator of the electric element, and By providing a holding part held by a penetrating stator bolt and a protrusion press-fitted into the support spring from above, it is possible to provide a compressor with low noise when starting and stopping. can.

Effects of the Invention As described above, the present invention provides a frame that constitutes a compression element, and includes a support spring and a snapper whose upper end is press-fitted into the support spring from below the support spring and whose lower end is fixed to the inner surface of the sealed case. a holding part that holds the main body and the stator with a stator bolt passing through the stator;
By providing a protrusion that is press-fitted into the support spring from above, the instantaneous noise generated when starting or stopping can be reduced from 53 dB (8) to 49 dB (8). Can be done.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a compressor according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of essential parts of the compressor, FIG. 3 is a sectional view of a conventional compressor, and FIG. 4 is a sectional view of the compressor described above. FIG. 2 is an enlarged cross-sectional view of the main parts of the machine. 1... Electric element, 2... Compression element, 3
...Support spring, 4 ... Sealed case, 6 ... Frame, 6 ... Main body, 7
... Stator, 8 ... Stator bolt, 9
...Holding part, 10...Protrusion part, 11.
... Snatsuba-8 Name of agent Patent attorney Toshio Nakao and 1 other person/-
--Electric element? - Three-wire element 3 - Support spring 4 - M - Sealing case 6 - Frame 6 - Main body 7 - Stator 8 - Stator bolt 9 - Mark part Fig. 1 to - protrusion and /I - Snunno - δ th Figure 2 Figure 3

Claims (1)

[Claims] A support spring that elastically supports the electric element and the compression element in a sealed case; and a snapper whose upper end is press-fitted into the support spring from below the support spring and whose lower end is fixed to the inner surface of the sealed case, The frame constituting the compression element includes a main body, a holding part that holds the stator of the electric element with a stator bolt passing through the stator, and a protrusion that is press-fitted into the support spring from above the support spring. A hermetic electric compressor characterized by being equipped with.