Heat-treatment module for a vehicle heat-treatment system

A thermal treatment module for a thermal treatment system of a vehicle, the thermal treatment module comprising a heat exchanger and an internal heat exchanger,

• wherein the heat exchanger is configured to bring about an exchange of heat between a heat transfer liquid and a refrigerant fluid,
• wherein the internal heat exchanger is configured to bring about an exchange of heat between the refrigerant fluid subjected to two different temperature levels in the thermal treatment system,
• wherein the thermal treatment module comprises an attachment block at least secured to the heat exchanger and configured to bear an expansion member,
• wherein the heat exchanger is interposed between the internal heat exchanger and the attachment block,
• wherein the attachment block comprises at least one chamber and at least two channels,
• wherein a first channel of the two channels extends between a first inlet orifice and a first outlet orifice which opens onto the at least one chamber, and
• wherein a second channel of the two channels extends between a second inlet orifice which opens onto the at least one chamber and a second outlet orifice.