Thermo-static expansion valve for controlling high pressure of transcritically and/or subcritically operable cooling and heating pump circuit, has control member controllable independent of pressure whose movement is coupled with area

摘要

The valve (15) has a control member (46) thermally controllable, which is independent of high pressure. The positioning movement of the control member is movement-coupled with an effective area (37) of another control member (36), if a temperature-dependent positioning movement of the thermally controllable control member acts against the positioning movement of the effective area. A temperature usage value of the thermally controllable control member for the positioning movement is adjusted to a value as the maximum operation temperature of a control filling (41) of the control member.