Apparatus for preventing vacuum compression of scroll compressor

An apparatus for preventing vacuum compression of a scroll compressor, comprising:

• a suction tube and a discharge tube each combined to a closed container;
• a fixing scroll having a wrap and a coolant inlet and an outlet;
• a high and low pressure separating plate installed at the upper side of the fixing scroll, dividing the inside of the closed container into a high pressure chamber and a low pressure chamber, the high and low pressure separating plate having a gas discharge hole therein;
• an orbiting scroll having a plurality of compressive chambers for compressing a sucked coolant by being rotatably engaged with the wrap of the fixing scroll at a lower side of the fixing scroll, and having a wrap for rendering each compressive chamber to have different pressure to be successively moved as the orbiting scroll is orbited;
• and
• a high vacuum preventing unit installed at an inner side of a body of the fixing scroll, wherein the high vacuum preventing unit comprises:
• a cylinder formed in the vertical direction inside the body of the fixing scroll;
• and
• a balance mass slidably installed inside the cylinder and having a coolant flow groove.

An apparatus for preventing vacuum compression of a scroll compressor, comprising:

• a suction tube and a discharge tube each combined to a closed container;
• a fixing scroll having a wrap and a coolant inlet and an outlet;
• a high and low pressure separating plate installed at the upper side of the fixing scroll, dividing the inside of the closed container into a high pressure chamber and a low pressure chamber, the high and low pressure separating plate having a gas discharge hole therein;
• an orbiting scroll having a plurality of compressive chambers for compressing a sucked coolant by being rotatably engaged with the wrap of the fixing scroll at a lower side of the fixing scroll, and having a wrap for rendering each compressive chamber to have different pressure to be successively moved as the orbiting scroll is orbited;
• and
• a high vacuum preventing unit installed at an inner side of a body of the fixing scroll, wherein the high vacuum prevention unit comprises:
• a valve housing formed in the lower pressure chamber and the high pressure chamber of the closed container and between the lower pressure chamber and the high pressure chamber so as to communicate with an intermediate pressure chamber while the intermediate pressure chamber is being compressed;
• a valve member slidably inserted into the inner circumferential surface of the valve housing and moved according to the pressure variation of the intermediate pressure chamber depending on the operation state of the compressor to communicate or block the lower pressure chamber and the high pressure chamber to each other;
• and
• an elastic member inserted between the valve member and the valve housing to support the valve member and reinforcing the motion of the valve member.

An apparatus for preventing vacuum generation of a scroll compressor, comprising:

• a fixed scroll having a discharge hole formed therein;
• a valve stopper combined to an upper portion of the discharge hole, the valve stopper including a guide face therein;
• a check valve installed in the scroll compressor and movable upwardly and downwardly along the guide face of the valve stopper to control flowing of coolant gas of high pressure and high temperature, to open and close the discharge hole of the fixed scroll;
• and
• a mutually communicating by-pass hole located in the guide face for by-passing high pressure coolant gas to a low pressure side at a time when the check valve closes the discharge hole of the fixed scroll, the by-pass hole being closable by a sidewall of the check valve when the check valve is spaced from the discharge hole of the fixed scroll.

An apparatus for preventing vacuum generation of a scroll compressor, comprising:

• a fixing scroll having a discharge hole formed therein;
• a valve stopper combined to an upper portion of the discharge hole, the valve stopper including a guide face therein;
• a check valve installed in the scroll compressor and movable upwardly and downwardly along the guide face of the valve stopper to control flowing of coolant gas of high pressure and high temperature compressed in the compressive chamber, to open and close the discharge hole of the fixing scroll;
• and
• a mutually communicating by-pass hole for by-passing high pressure coolant gas to a low pressure side at a time when the check valve closes the discharge hole of the fixing scroll,
• wherein a guide groove is formed at the upper portion of the discharge hole of the fixing scroll on which the check valve is mounted.