JPS60116887A - Enclosed type compressor - Google Patents

Abstract

PURPOSE:To reduce the temperature rise of suction gas and improve the suction efficiency of the compressor by a method wherein a guide plate is provided in an enclosed vessel for the enclosed type compressor constituting a refrigerating cycle to introduce refrigerant gas into the suction port of a suction muffler. CONSTITUTION:The guide plate 15, provided with an inclined surface, is fixed by welding to the vicinity of the welded part of a suction pipe 16 in the enclosed vessel 1 so as to introduce the refrigerant gas from the suction pipe 16 into the suction port of the suction muffler 14. The refrigerant gas diffuses in the enclosed vessel 1 and prevents the temperature rise of the suction gas due to heat generated from the compressor.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hermetic compressor constituting a refrigeration cycle.

Conventional Structure and Problems Conventionally, this type of hermetic compressor has a motor/branch element 102 inside a hermetic chamber 114101, as shown in FIGS. 1 to 3.
Then, all the Salel compressor elements 103 are driven by this electric motor element 102, and further V(month-a'; + several elements 10
The suction muffler 104 constituting 3 and the suction pipe 105f were installed in the sealed container tg101.

Then, the suction muffler 104 is fixed to the suction muffler 103, and the suction pipe IQ5 is a sealed container i'? ii 101 indecent f
It had a fixed structure.

However, in this conventional configuration, the refrigerant sucked through the suction pipe 105 is heated by the heat generated by the human body in the 78 sealed container 101, the electric motor element 102 and the compressor element 103 in the sealed container 101, and then It is sucked into the compressor compressor 103 through the suction muffler 104 and compressor element 10
3, it is compressed into a high temperature, high pressure gas and sealed u'fxg 1
01 was being discharged outside. Therefore, compressor element 103
The refrigerant is sucked into the airtight container 101 from the suction pipe 105.
There was a problem in that the refrigerant was overheated by about 50'C compared to immediately after entering the refrigerant, the specific volume of the sucked refrigerant increased, the amount of refrigerant circulated decreased, and the capacity decreased.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and its entire purpose is to improve the efficiency of hermetic compressors. , if? to the refrigerant full suction muffler side at a position close to the suction port of the suction muffler of the hermetic compressor. Provide a guide plate with an inclined surface such as
This guide plate is fixed to the inner surface of the airtight container near the entire suction pipe.

With this configuration, the refrigerant sucked from the suction pipe is directly introduced into the suction port of the suction muffler due to the effect of the guide plate, and heating due to heat generated in the motor element and compressor element is greatly reduced.
1]. As a result, the capacity of the manpower can be increased and the compressor infant can be improved.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 4 to 11. First, a schematic structure of a pan of a hermetic compressor will be described with reference to FIG.

In the same figure, is 1 a closed container? r? A motor element 4 consisting of a rotor 2 and a stator 3 and a compressor element 6 driven by the motor element 4 via a crankshaft 6 are disposed inside the motor element r. The compressor element 6
These include the stove throat 7 connected to the crankshaft 5, the piston 9 fixed to the stove throat 7 through the screw 1 pin 8, the stove 9''f: the housed crankcase 10, and the crankcase 1o. The crankcase 1o also serves as a lower bearing, and supports the crankshaft 5 together with an upper bearing 12. Reference numeral 13 denotes a cover that constitutes the refrigerant suction chamber and discharge chamber of the compressor element 6. A suction muffler 14 is press-fitted into this cover 13, and is fixed to the crankcase 101 or the stator 3. 1 is provided with a guide plate 16, which will be described later, on its inner surface, and the suction pipe 1
6. Once the discharge pipes 17 are welded and fixed,
The structure of the guide plate 16 will be explained with reference to FIGS. 5 to 7. Here, for the same items as in Figure 4, the same vinegar QM
, 1. , (Explanation will be omitted.

In the same figure, the guide plate 15 is fixed on the inner surface of the closed container 1 near where the suction pipe 16 is fully welded. and is provided close to the suction port 18 of the suction muffler 14.

In the above configuration, when the electric motor element 4 is operated, the compressor element 6 is also driven, and the refrigerant enters the closed container 1 from the suction pipe 16, and after being heated by the electric motor element 4 and the compressor element 6. The refrigerant flows from the suction muffler 14, through the cover 13, through the valve plate 1.11, to the cylinder chamber 20 in the crankcase 10, and is compressed by the piston 9. The compressed refrigerant flows from the valve plate 11 all the way through the cover 13.
Spit out by 111 person 17.

Here, since the guide plate 15 is arranged on the inner surface of the airtight container 1, most of the refrigerant f,1 flowing out from the suction pipe 16 is smoothly guided as it is to the suction 1''18 of the suction muffler 14. The heating effect due to the heat generated in the motor element 4 and the compressor element 6 can be reduced to 60°
The overheated material is heated to about 15°C, and while the heating is suppressed to about 15°C, it once spreads in the sealed 'R', <:, :1, and is inhaled from the suction port 18 (the pressure generated between As a result, the drop of the compressor element 6 can also be reduced.
The volume of the /8 medium sucked into the refrigerant is not expanded, the refrigerant circulation is increased, and the capacity of the compressor is increased.

Therefore, the volumetric efficiency is improved and the efficiency of the compressor can be improved. Furthermore, since the guide plate 15 is fixed to the sealed valley HH1, assembly is easy and parts other than the guide plate 16 can be shared. In addition, since the gap size between the electric motor element 4 and the compressor element 6 can be appropriately selected, problems caused by noise, vibration, and large vibrations that occur during starting and stopping are not affected Wk. Furthermore, since the electric motor element 4 can be cooled by a portion of the suction refrigerant, the winding temperature of the stator 3 can be increased, the cost of the electric motor element 4 can be reduced, and efficiency can be improved. A plurality of inclined surfaces 16a having different degrees of inclination are shown not only in FIG. 7 but also in FIG. 8.

15tl, or a structure in which the inclined surface is replaced with a fully curved surface i6c as shown in FIG. 9 may be used.

Furthermore, as shown in FIGS. 10 and 11, by providing a notch 16d or a through hole 1E5ef in the inclined surface 15a of the guide plate 16, even if liquid refrigerant or oil flows in from the suction pipe 16 due to an abnormality in the refrigeration cycle, etc. Due to the difference in specific gravity, the liquid refrigerant and oil fall through the notch 16d1 and the through hole 15el toward the motor element 4, so the liquid refrigerant and oil flow into the suction muffler 14 and compress
Effects of the Invention As described above, in the present invention, the guide plate guides the suction refrigerant to the suction O side of the suction muffler, so that the suction refrigerant The thermal effects caused by electric motor elements, etc. are prevented, the volumetric efficiency of the compressor is greatly improved, and the structure is simple and can be manufactured at low cost.

[Brief explanation of the drawing]

Figure 1 is an N cross-sectional view of a conventional hermetic compressor, Figure 2 is a side view of the main part of the same compressor with a part completely cut away, and Figure 3 is a recessed part of the same compressor with a part completely cut away. ilU side view, FIG. 4 is a vertical cross-sectional view of a hermetic compressor according to an embodiment of the present invention, and FIG.
The figure is a plan view of the main parts of a part of the compressor at l4II-, Figure 7 is a perspective view of the guide plate in the compressor, Figure 8,
10 and 11 are perspective views of different guide plates, respectively. 1... Sealed #'<? 5 s 4...
Electric motor fortification element, 6...Compressor element, 14...Mark/Suction muffler, 15...Both guide plates, 152L...Slanted surface, 16...Suction pipe, 18・Mark/Inlet. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Fig. 102 Fig. 4 75 m7 Fig. 8 Fig. 9 11; (+ Fig. 10 Fig. 1 t)

Claims (1)

Scope of Claims: (1) An electric motor element and a compressor element driven by the electric motor element are provided in a closed container, and a suction muffler constituting the compressor element is connected to a suction pipe of the closed container. A guide plate with an inclined surface to guide the refrigerant to the side,
A hermetic compressor is fixed to an inner surface of the hermetic container near the suction pipe in close proximity to the suction port of the suction muffler. (2) The hermetic compressor according to claim 1, in which the guide plate has a plurality of sloped surfaces. (3) Claim 1, in which the guide plate has all sloped surfaces in an arc shape. Hermetic compressor as described. (4) The hermetic compressor according to claim 1, 2, or 3, wherein the guide plate has a notch formed at the lower end of its sloped surface. (6) The hermetic compressor according to claim 1, 2, or 3, wherein the guide plate has a through hole formed in its inclined surface.