Scroll compressor with differential pressure hole
First Claim
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1. A scroll compressor, comprising:
- a shell having an inner space configured to be filled with refrigerant, the inner space containing a predetermined amount of oil;
a drive motor installed in the shell;
a crankshaft coupled to the drive motor and having an oil passage formed therethrough;
a fixed scroll fixed to the shell and having a fixed wrap; and
an orbiting scroll having an orbiting wrap engaged with the fixed wrap, the orbiting scroll forming compression chambers together with the fixed scroll while orbiting with respect to the fixed scroll, wherein the orbiting scroll comprises a differential pressure hole that communicates a high pressure space formed in the inner space of the shell with an intermediate pressure space formed between the fixed scroll and the orbiting scroll, and wherein the differential pressure hole comprises a decompression portion having a pin member inserted therein that decompresses oil, wherein an inner diameter of the decompression portion is greater than an outer diameter of the pin member, and wherein the fixed scroll comprises a communication hole having a first open end that communicates with the high pressure space, and a second open end that communicates with the first open end and a low pressure space between the fixed scroll and the orbiting scroll.
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Abstract
A scroll compressor is provided that may include a differential pressure hole formed at or in an orbiting scroll that communicates a high pressure part with an intermediate pressure part, a decompression portion formed in the differential pressure hole and having a pin member inserted therein to decompress oil. An inner diameter D1 of the decompression portion may be greater than an outer diameter D2 of the pin member. The decompression portion may include an inlet through which oil may be introduced from the high pressure part into the differential pressure hole, and an outlet through which oil from the differential pressure hole may be discharged into the intermediate pressure part.
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Citations
20 Claims
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1. A scroll compressor, comprising:
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a shell having an inner space configured to be filled with refrigerant, the inner space containing a predetermined amount of oil; a drive motor installed in the shell; a crankshaft coupled to the drive motor and having an oil passage formed therethrough; a fixed scroll fixed to the shell and having a fixed wrap; and an orbiting scroll having an orbiting wrap engaged with the fixed wrap, the orbiting scroll forming compression chambers together with the fixed scroll while orbiting with respect to the fixed scroll, wherein the orbiting scroll comprises a differential pressure hole that communicates a high pressure space formed in the inner space of the shell with an intermediate pressure space formed between the fixed scroll and the orbiting scroll, and wherein the differential pressure hole comprises a decompression portion having a pin member inserted therein that decompresses oil, wherein an inner diameter of the decompression portion is greater than an outer diameter of the pin member, and wherein the fixed scroll comprises a communication hole having a first open end that communicates with the high pressure space, and a second open end that communicates with the first open end and a low pressure space between the fixed scroll and the orbiting scroll. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A scroll compressor, comprising:
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a shell having an inner space configured to be filled with refrigerant, the inner space containing a predetermined amount of oil; a drive motor installed in the shell; a crankshaft coupled to the drive motor and having an oil passage formed therethrough; a fixed scroll fixed to the shell and having a fixed wrap; and an orbiting scroll having an orbiting wrap engaged with the fixed wrap, the orbiting scroll forming compression chambers together with the fixed scroll while orbiting with respect to the fixed scroll, wherein the orbiting scroll comprises a differential pressure hole that communicates a high pressure space formed in the inner space of the shell with an intermediate pressure space formed between the fixed scroll and the orbiting scroll, wherein the differential pressure hole comprises a decompression portion having a pin member inserted therein that decompresses oil, and an expansion portion having an expanded inner diameter formed adjacent an outlet of the differential pressure hole, and wherein the pin member comprises at least one stepped portion so as to have a large diameter portion and a small diameter portion, and wherein the small diameter portion is formed at an end portion of the pin member, the end portion corresponding to the outlet of the differential pressure hole.
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19. A scroll compressor, comprising:
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a shell having an inner space configured to be filled with refrigerant, the inner space containing a predetermined amount of oil; a drive motor installed in the shell; a crankshaft coupled to the drive motor and having an oil passage formed therethrough; a fixed scroll fixed to the shell and having a fixed wrap; and an orbiting scroll having an orbiting wrap engaged with the fixed wrap, the orbiting scroll forming compression chambers together with the fixed scroll while orbiting with respect to the fixed scroll, wherein the orbiting scroll comprises a differential pressure hole that communicates a high pressure space formed in the inner space of the shell with an intermediate pressure space formed between the fixed scroll and the orbiting scroll, and wherein the differential pressure hole comprises a decompression portion having a pin member inserted therein that decompresses oil, wherein an inner diameter of the decompression portion is greater than an outer diameter of the pin member, wherein the differential pressure hole includes an inlet that communicates with the high pressure space and an outlet that communicates with the intermediate pressure space, wherein a length between the inlet and the outlet is longer than a length of the pin member, and wherein the differential pressure hole further comprises an expansion portion having an expanded inner diameter formed adjacent the outlet of the differential pressure hole. - View Dependent Claims (20)
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Specification