US 11,454,237 B2Granted

Scroll compressor

AssigneeSamsung Electronics Co., Ltd.

InventorsJongsoo Noh, Sunghyuk Park, Mooseong Bae, Sungchan Cho, Sungkwang Oh, Yanghee Cho

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Abstract

Provided is a scroll compressor capable of expanding a compression space and accordingly increasing a design volume ratio. The scroll compressor includes: a main body; a fixed scroll fixed inside the main body; an orbiting scroll orbiting the fixed scroll; and a plurality of compressing portions respectively provided in the fixed scroll and the orbiting scroll, wherein each compressing portion includes a circular arc portion of which a curvature is constant, a curved portion positioned in an inside of the circular arc portion and spaced a preset distance from the circular arc portion, and a connection portion connecting the circular arc portion to the curved portion, wherein a curvature of the connection portion changes from the first circular arc portion to the second circular arc portion.

Claims15

Dependent claims

A scroll compressor comprising:

a main body;
a fixed scroll fixed inside the main body;
an orbiting scroll configured to orbit the fixed scroll;
and
a plurality of compressing portions respectively provided in the fixed scroll and the orbiting scroll, each compressing portion among the plurality of compressing portions including:
a circular arc portion of which a curvature is constant,
a curved portion positioned in an inside of the circular arc portion and spaced a preset distance from the circular arc portion,
a connection portion formed to connect the circular arc portion to the curved portion, and
a rotation shaft rotating with respect to a rotation axis and including an eccentric portion being eccentric from the rotation axis, wherein the eccentric portion is positioned alongside a compressing portion of the plurality of compressing portions in a direction crossing the rotation axis,
wherein
a curvature of the connection portion changes from the circular arc portion to the curved portion, and
the connection portion is in a shape of a Bezier curve, a Hermite curve, or a B-spline curve,
wherein the circular arc portion is referred to as a first circular arc portion, and the curved portion is referred to as a second circular arc portion,
wherein a distance from a center of the compressing portion to the connection portion is R,
a distance from the center of the compressing portion to the first circular arc portion is R1,
a distance from the center of the compressing portion to the second circular arc portion is R2,
a thickness of the first circular arc portion is t,
a distance by which a center of the eccentric portion is eccentric from a center of the rotation shaft is ε,
an angle of one end of the first circular arc portion with respect to a preset reference line is θ1,
an angle of one end of the second circular arc portion with respect to the preset reference line is θ2,
an angle of a point of the connection portion with respect to the preset reference line is θ, and
R
=
R
1
-
(
ɛ
+
t
)
+
(
ɛ
+
t
)
⁢
cos
⁢
⁢
φ
,
φ
=
-
180
α
⁢
cos
⁡
(
θ
-
θ
1
)
,
α
=
θ
1
-
θ
2
is satisfied.

63 more elements

A scroll compressor comprising:

a main body;
a fixed scroll fixed inside the main body;
an orbiting scroll configured to orbit the fixed scroll;
and
a plurality of compressing portions respectively provided in the fixed scroll and the orbiting scroll, wherein each compressing portion among the plurality of compressing portions includes:
a first circular arc portion being in a shape of an arc,
a second circular arc portion positioned in an inside of the first circular arc portion, wherein a center of the second circular arc portion is at the same location as a center of the first circular arc portion, and a thickness of the second circular arc portion is the same as a thickness of the first circular arc portion,
a connection portion formed to connect the first circular arc portion to the second circular arc portion, wherein a curvature of the connection portion changes successively from the first circular arc portion to the second circular arc portion, and
a rotation shaft rotating with respect to a rotation axis and including an eccentric portion being eccentric from the rotation axis, wherein the eccentric portion is positioned alongside the compressing portion in a direction crossing the rotation axis,
wherein the connection portion of the plurality of compressing portions is in a shape of a Bezier curve, a Hermite curve, or a B-spline curve,
wherein a distance from a center of the compressing portion to the connection portion is R,
a distance from the center of the compressing portion to the first circular arc portion is R1,
a distance from the center of the compressing portion to the second circular arc portion is R2,
a thickness of the first circular arc portion is t,
a distance by which a center of the eccentric portion is eccentric from a center of the rotation shaft is ε,
an angle of one end of the first circular arc portion with respect to a preset reference line is θ1,
an angle of one end of the second circular arc portion with respect to the preset reference line is θ2,
an angle of a point of the connection portion with respect to the preset reference line is θ, and
R
=
R
1
-
(
ɛ
+
t
)
+
(
ɛ
+
t
)
⁢
cos
⁢
⁢
φ
,
φ
=
-
180
α
⁢
cos
⁡
(
θ
-
θ
1
)
,
α
=
θ
1
-
θ
2
is satisfied.

60 more elements

A scroll compressor, comprising:

a main body;
a fixed scroll fixed inside the main body and including a first end plate and a fixing wrap formed on the first end plate;
an orbiting scroll configured to orbit the fixed scroll, and including a second end plate being opposite to the first end plate, and an orbiting wrap and a shaft coupling portion formed in the second end plate;
and
a rotation shaft including an eccentric portion being eccentric from a rotation axis, the rotation shaft coupled to the shaft coupling portion, wherein the eccentric portion penetrates the second end plate,
wherein the orbiting wrap includes:
a first circular arc portion having an arc shape,
a second circular arc portion positioned in an inside of the first circular arc portion and spaced apart from the first circular arc portion, and
a connection portion formed to connect the first circular arc portion to the second circular arc portion, wherein a curvature of the connection portion changes from the first circular arc portion to the second circular arc portion,
wherein the connection portion is in a shape of a Bezier curve, a Hermite curve, or a B-spline curve,
wherein a distance from a center of the compressing portion to the connection portion is R,
a distance from the center of the compressing portion to the first circular arc portion is R1,
a distance from the center of the compressing portion to the second circular arc portion is R2,
a thickness of the first circular arc portion is t,
a distance by which a center of the eccentric portion is eccentric from a center of the rotation shaft is ε,
an angle of one end of the first circular arc portion with respect to a preset reference line is θ1,
an angle of one end of the second circular arc portion with respect to the preset reference line is θ2,
an angle of a point of the connection portion with respect to the preset reference line is θ, and
R
=
R
1
-
(
ɛ
+
t
)
+
(
ɛ
+
t
)
⁢
⁢
cos
⁢
⁢
φ
,
φ
=
-
1
⁢
8
⁢
0
α
⁢
cos
⁡
(
θ
-
θ
1
)
,
α
=
θ
1
-
θ
2
is satisfied.

65 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/942,190Filed 29 Jul 2020
Priority: KR 10-2019-009226830 Jul 2019
Published: US 2021/0033092 A14 Feb 2021
Granted: 27 Sep 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F04C 18/0215
Both members having co-operating elements in spiral form: where only one member is moving
F04C 23/008
Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping…:…
F04C 18/0269
Details concerning the involute wraps or their base, e.g. geometry: details concerning the involute wraps
F04C 29/0057
Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions: for eccentric movement