Valve device

A valve device comprising:

• a case having a lower portion and an accommodation space;
• a base plate to cover the lower portion of the case;
• a refrigerant inlet pipe to be connected to the base plate so that while the refrigerant inlet pipe is connected to the base plate the refrigerant inlet pipe allows a refrigerant to flow into the accommodation space;
• an inlet and outlet pipe to be connected to the base plate so that while the inlet and outlet pipe is connected to the base plate the inlet and outlet pipe allows the refrigerant to flow in and out;
• a boss comprising a refrigerant inlet and outlet hole formed at a first position spaced apart from a center of the boss to allow the refrigerant to flow in and out through the inlet and outlet pipe, and an extending groove extending radially from the refrigerant inlet and outlet hole at the first position to a second position and connecting the refrigerant inlet and outlet hole with a portion of the extending groove at the second position;
• and
• a pad rotatable on one side of the boss to close the refrigerant inlet and outlet hole and to open the extending groove,
• wherein the pad comprises:
• a first open cavity cut from an outside of the pad to the second position,
• a sealing body in contact with an upper surface of the boss to close the refrigerant inlet and outlet hole and the extending groove of the boss, and
• a second open cavity cut from the outside of the pad to the first position to open the refrigerant inlet and outlet hole at one side of the sealing body,
• wherein the extending groove comprises:
• an opening member in communication with the accommodation space by the first open cavity of the pad to receive the refrigerant and extending along a direction in which the pad is rotatable;
• and
• a connection member connected to the opening member to allow the refrigerant to flow into the refrigerant inlet and outlet hole,
• wherein the sealing body is disposed to close the refrigerant inlet and outlet hole and cover the connection member, in a state where the first open cavity is positioned to open the opening member.