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JP-2026514548-A - Cooling water supply system for water-cooled scroll compressor

JP2026514548AJP 2026514548 AJP2026514548 AJP 2026514548AJP-2026514548-A

Abstract

The present invention provides a cooling water supply device for a water-cooled scroll compressor that can prevent damage to the fitting pipes and cooling water hoses by providing a fitting structure that prevents the cooling water hoses connected to the cooling water supply and discharge fitting pipes of the orbiting scroll from moving together in accordance with the orbiting motion of the orbiting scroll and the fitting pipes. The cooling water supply device for a water-cooled scroll compressor according to the present invention has a configuration in which an orbiting absorption mechanism 100 corresponding to the inlet fitting pipe 32 and the outlet fitting pipe 34 is provided on the outside of the housing 10. The orbiting absorption mechanism 100 includes a crank pipe 300 having an eccentric shaft 320 having an axis X4 that is eccentric by an eccentric amount Y1 of the orbiting scroll 30 relative to the fixed scroll 20 with respect to the rotation axis X3 of the rotation central axis 310. The inlet fitting pipe 32 or the outlet fitting pipe 24 is connected to the eccentric shaft 320 of the crank pipe 300, and a connecting pipe 200 for connecting a cooling water hose is provided on the opposite side. [Selection Diagram] Figure 6

Inventors

  • パク， ス ジン
  • キム， ジョン ソ

Assignees

  • キョンウォン マシナリー カンパニー リミテッド

Dates

Publication Date
20260511
Application Date
20230825
Priority Date
20230510

Claims (6)

  1. A cooling water supply device comprising a housing (10), a fixed scroll (20) coupled to the end of the housing (10), an orbiting scroll (30) engaged with the fixed scroll (20), a crankshaft (40) that causes the orbiting scroll (30) to orbit along a circular orbit with radius equal to the eccentricity (Y1), and a cooling water chamber (C2) for cooling the orbiting scroll (30), wherein cooling water is supplied to flow cooling water into the cooling water chamber (C2) of the orbiting scroll (30), In order to allow cooling water to flow into and out of the cooling water chamber (C2), an inlet fitting pipe (32) and an outlet fitting pipe (34) are provided on the orbiting scroll (30), The housing (10) includes a pivoting absorption mechanism (100) provided on the outer part of the housing (10) corresponding to the inlet fitting pipe (32) and the outlet fitting pipe (34), respectively. The aforementioned rotation absorption mechanism (100) is A fixed block (110) having a through hole (112) formed inside, A crank tube (300) comprises a rotating central axis (310) rotatably supported by the fixed block (110), and an eccentric axis (320) having an axis (X4) that is eccentric to the rotation axis (X3) of the rotating central axis (310) by an amount of eccentricity (Y1) of the orbiting scroll (30) relative to the fixed scroll (20), and a cooling water passage (330) is formed that penetrates and connects the inside of the rotating central axis (310) and the eccentric axis (320), The system includes a connecting pipe (200) that is fastened to a through hole (112) on the opposite side of the crank pipe (300) while remaining free from constraint by the crank pipe (300), A cooling water supply device for a water-cooled scroll compressor, characterized in that the inlet fitting pipe (32) or the outlet fitting pipe (34) is connected to the eccentric shaft (320) of the crank pipe (300), and a cooling water hose is connected to the connecting pipe (200).
  2. The aforementioned rotation absorption mechanism (100) is The fixed block (110) is provided with a saddle portion (120) extending from it. The saddle portion (120) is provided with a plurality of fastening holes (122) for fastening to the housing (10), The cooling water supply device for a water-cooled scroll compressor according to claim 1, characterized in that the bottom surface of the saddle portion (120) is formed in accordance with the surface contour shape of the housing (10) and consists of a saddle surface (124) that is in close contact with the surface of the housing (10).
  3. The cooling water supply device for a water-cooled scroll compressor according to claim 1, characterized in that a mechanical seal type sealing element (500) is provided in the through hole (112) of the fixed block (110) to prevent leakage of cooling water between the fixed block (110) and the rotating central shaft (310).
  4. The sealing element (500) of the mechanical seal type is, The cooling water supply device for a water-cooled scroll compressor according to claim 3, characterized in that a first snap ring (510), a first washer (520), a first spring support tube (530), a compression spring (550), a second spring support tube (540), a second washer (560), a pressure piece (570), a sealing seal (580), and a second snap ring (590) are connected in that order.
  5. The cooling water supply device for a water-cooled scroll compressor according to claim 1, characterized in that a lip seal type sealing element (500) is provided in the through hole (112) of the fixed block (110) to prevent leakage of cooling water between the fixed block (110) and the rotating central shaft (310).
  6. The sealing element (500) is A cooling water supply device for a water-cooled scroll compressor according to claim 5, characterized in that a lip seal (600) is provided at the end of the rotating central shaft (310), having a sealing lip (602) on its inner circumference, the sealing lip (602) elastically adhering to the outer surface of the rotating central shaft (310), and the outer diameter and side surface adhering to and sealing the through hole (112).

Description

This invention relates to a cooling water supply device for a water-cooled scroll compressor, and more particularly, to a cooling water supply device for a water-cooled scroll compressor that prevents damage to the fitting pipes and cooling water hoses by providing a fitting structure that prevents the cooling water hoses connected to the cooling water supply and discharge fitting pipes of the orbiting scroll from moving together in accordance with the orbiting motion of the orbiting scroll and the fitting pipes. Generally, a scroll compressor comprises a fixed scroll fixed to a housing, an orbiting scroll that engages with the fixed scroll and whose center and the center of the input shaft are eccentric, causing it to orbit and draw in and compress air, a motor that drives the input shaft of the orbiting scroll, and a cooling device that cools the motor and the scroll. Therefore, by driving the orbiting scroll to orbit eccentrically relative to the fixed scroll fixed to the housing, the volume of the compression chamber between the fixed scroll and the orbiting scroll is gradually reduced, compressing the drawn-in air. The compressed air is then discharged from a port formed in the center of the fixed scroll. Figure 1 shows a cross-sectional view of a conventional water-cooled scroll compressor. Referring to Figure 1, the scroll compressor comprises a housing 10, a fixed scroll 20 coupled to the end of the housing 10, an orbital scroll 30 housed within the housing 10 and engaged with the fixed scroll 20, and a crankshaft 40 that rotates the orbital scroll 30. The crankshaft 40 is rotated by a drive source, such as a motor (not shown). The crankshaft 40 is equipped with an eccentric shaft 42 having an axis X2 offset by an eccentricity Y1 from its rotation axis X1. The eccentric shaft 42 is rotatably coupled to the orbital scroll 30 via a bearing 50. The fixed scroll 20 and the orbiting scroll 30 have helical (involute) wraps 20a and 30a. The wrap 30a of the orbiting scroll 30 engages with the wrap 20a of the fixed scroll 20 with a 180° phase difference, creating multiple crescent-shaped compression spaces between the wraps 20a of the fixed scroll 20 and the wraps 30a of the orbiting scroll 30. Therefore, the rotation of the crankshaft 40 causes its eccentric shaft 42 to rotate the orbiting scroll 30, which moves the compression space between the wraps 20a and 30a toward the center of the fixed scroll 20. Simultaneously, the volume of the compression space is reduced, thereby compressing the fluid (air or gas). The compressed air is discharged from the discharge port 22 formed in the center of the fixed scroll 20 and sent to the destination. During such compression operation, the tip (end face) of the wrap 20a of the fixed scroll 20 and the tip (end face) of the wrap 30a of the orbiting scroll 30 rub against the surface of the mating scroll, generating heat. This causes the tip seals provided at the ends of the wraps 20a and 30a to deteriorate, while simultaneously increasing the temperature of the compressed fluid and reducing the compression efficiency. A water-cooled scroll compressor is a compressor configured to cool the heat generated in the compression section of the fixed scroll 20 and the orbiting scroll 30 using cooling water. As shown in Figure 1, a cooling water chamber C1 is provided on the opposite side of the wrap 20a of the fixed scroll 20, and a cooling water chamber C2 is provided on the opposite side of the wrap 30a of the orbiting scroll 30. Cooling is performed by flowing cooling water through each of the cooling water chambers C1 and C2. The fixed scroll 20 is provided with an inlet fitting pipe 24 for introducing cooling water into the cooling water chamber C1 and an outlet fitting pipe 26 for discharging the cooling water. Cooling water hoses (not shown) are connected to both the inlet fitting pipe 24 and the outlet fitting pipe 26. Similarly, the orbiting scroll 30 is provided with an inlet fitting pipe 32 for introducing cooling water into the cooling water chamber C2, and an outlet fitting pipe 34 for discharging the cooling water. Cooling water hoses (not shown) are connected to both the inlet fitting pipe 32 and the outlet fitting pipe 34. As shown in Figures 2 and 3, the inlet fitting pipe 24 and outlet fitting pipe 26 of the fixed scroll 20 protrude to the outside of the fixed scroll 20, while the inlet fitting pipe 32 and outlet fitting pipe 34 of the orbiting scroll 30 protrude to the outside of the housing 10, allowing for the connection of cooling water hoses. When the scroll compressor is activated, as described above, the orbiting scroll 30 orbits the fixed scroll 20 along a circular orbit with a radius equal to the eccentricity Y1 of the eccentric axis 42 of the crankshaft 40. At this time, the inlet fitting tube 24 and outlet fitting tube 26 of the fixed scroll 20 do not move. However, the inlet fitting pipe 32 and outlet fitting pipe 34 of the orbiting scroll 30 will o