| 摘要 |
<p>A conversion device for refrigerant flow direction comprises a four-way valve (80), four check valves (9A, 9B, 9C, 9D) and four connection terminals (a, b, c, d). A high pressure node (81) of the four-way valve (80) is connected with an outlet end of the first check valve (9A). An inlet end of the first check valve (9A) is connected with the first connection terminal (a). A low pressure node (83) of the four-way valve (80) is connected with an inlet end of the third check valve (9C). An outlet end of the third check valve (9C) is connected with the second connection terminal (b). An outlet end of the second check valve (9B) is connectedwith a pipe between the first connection terminal (a) and the inlet end of the first check valve (9A). An inlet end of the second check valve (9B) is connected with a pipe between the low pressure node (83) of the four-way valve (80) and the inlet end of the third check valve (9C). An inlet end of the fourth check valve (9D) is connected with a pipe between the second connection terminal (b) and the outlet end of the third check valve (9C). An outlet end of the fourth check valve (9D) is connected with a pipe between the high pressure node (81) of the four-way valve (80) and the outlet end of the first check valve (9A). The third connection terminal (c) is connected with one reversing node (82) of the four-way valve (80). The four connection terminal (d) is connected with another reversing node (84) of the four-way valve (80).</p> |
