Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate
2001-09-05
2003-03-25
Tyler, Cheryl J. (Department: 3746)
Pumps
Motor driven
Electric or magnetic motor
C417S902000, C417S572000, C248S617000
Reexamination Certificate
active
06537041
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a compressor, and more particularly to a compressor capable or reducing vibration and noise that is produced while compressed refrigerant is discharged through a discharge line tube.
2. Description of the Related Art
Generally, a compressor used in a refrigeration cycle device is constructed in a manner that refrigerant is compressed into high temperature and high pressure refrigerant and discharged therefrom.
FIGS. 1 and 2
are sectional views showing internal structure of the compressor from a front and rear view, respectively.
As shown in
FIGS. 1 and 2
, the compressor
200
includes a sealed casing
110
, a compressing mechanism
100
, enclosed by the sealed casing
110
for compressing and discharging the refrigerant, and a suction pipe
102
and a discharge pipe
104
passed through the sealed casing
110
from the compressing mechanism
100
, respectively.
The operation of the compressing mechanism
100
of the compressor, constructed as above, will be described below.
First, as power is supplied, a motor is driven. By the driving of the motor, a crank shaft
1
is rotated, and accordingly, a connecting rod
17
is linearly reciprocated by an eccentric shaft
19
of the crank shaft
1
. A cylinder of a piston
16
strokes for drawing in and discharging out the refrigerant according to a movement of the connecting rod
17
. At this time, the refrigerant drawn into the cylinder is compressed, and such compressed refrigerant is discharged through the discharge pipe
104
via a valve plate
11
and a cylinder head
38
. Meanwhile, the discharged refrigerant from the discharge pipe
104
reaches an evaporator (not shown), which takes a part in the refrigeration cycle, and evaporated therefrom. The evaporated refrigerant gas is drawn into a suction muffler
4
through the suction pipe
102
of the compressor
200
. The gaseous refrigerant flows through a suction muffler base
5
and a suction hole
6
of the valve plate
11
, and opens the suction valve
8
to be drawn into a block bore cylinder
9
. Then the piston
16
is returned to an upper dead end position to compress the gaseous refrigerant. The compressed refrigerant pushes the discharge valve
10
through the valve plate
11
, and flows into the discharge muffler
33
via a discharge chamber
12
of the cylinder head
38
. The compressed refrigerant is then discharged through the discharging pipe
104
, after passing through a baffle path
34
and discharge muffler cover
18
provided for releasing the refrigerant shock.
Here, the compressed refrigerant is transferred through the discharge line tube
31
of
FIG. 3
from the discharge muffler cover
18
to the discharge pipe
104
. The discharge line tube
31
is bent for reducing vibration and noise that are produced during the discharge of the refrigerant. Further, a coil spring
32
is disposed around an outer circumference of the discharge line tube
31
for damping the vibration.
Although the discharge line tube
31
is bent and the coil spring
32
is wound around such bent discharge line tube
31
for the purpose of reducing the vibration and noise produced from the discharge line tube
31
, the vibration and noise from the compressor is not sufficiently reduced. Further, due to a gap between the discharge line tube
31
and the coil spring
32
wound around the outer circumference of the discharge line tube
31
, the discharge line tube
31
and the coil spring
32
collide with each other while the compressor is driven, generating a noise.
Since the level of the noise produced from the collision of the coil spring
32
and the discharge line tube
31
falls into an audio-frequency range, i.e., 2.5 kHz-3.15 kHz, the noise particularly annoys users.
SUMMARY OF THE INVENTION
The present invention has been made to overcome the above-mentioned problems of the related art, and accordingly, it is an object of the present invention to provide a compressor capable of reducing vibration and noise produced during a discharge of compressed refrigerant through a discharge line tube.
The above object is accomplished by a compressor according to the present invention, including a sealed casing, a compressing mechanism mounted in the sealed casing, for compressing and discharging an inflow of refrigerant, a suction pipe passed through the sealed casing, the suction pipe through which the refrigerant flows into the compressing mechanism from outside of the sealed casing, a discharge pipe passed through the sealed casing, the discharge pipe through which the refrigerant is discharged from the compressing mechanism outside of the sealed casing, a discharge line tube disposed between the compressing mechanism and the discharge pipe, and having a bent portion for reducing a vibration and a noise produced during a discharge of the refrigerant, and an elastic member supported on the bent portion of the discharge line tube on two locations for generating a predetermined tension.
REFERENCES:
patent: 2721029 (1955-10-01), Grimshaw
patent: 3154245 (1964-10-01), Roelsgaard
patent: 3246836 (1966-04-01), Ayling
patent: 4401418 (1983-08-01), Fritchman
patent: 4449895 (1984-05-01), Kurahayashi
patent: 5059100 (1991-10-01), Quesada et al.
Ladas & Parry
Samsung Kwangju Electronics Co., Ltd.
Tyler Cheryl J.
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