A temperature control device for controlling the temperature of at least one portion of a motor vehicle, comprising:
- a refrigerant circuit through which a refrigerant flows, the refrigerant circuit comprising:
- a compressor section through which the refrigerant can flow and in which a refrigerant compressor is configured to convey and compress the refrigerant;
- a condenser section which is connected in series with the compressor section and through which a first partial mass flow of the refrigerant can flow and in which a first expansion valve is configured to adjust and expand the first partial mass flow, and a condenser configured to condense the first partial mass flow, are arranged;
- a bypass section which is connected in parallel with the condenser section and in series with the compressor section and through which a second partial mass flow of the refrigerant can flow and in which a second expansion valve is arranged and configured to adjust and expand the second partial mass flow;
- and
- a mixing point, at which the condenser section and the bypass section are brought together and the first partial mass flow and the second partial mass flow are brought together and mixed with one another to form a total mass flow;
- a heat accumulator configured to store heat, comprising:
- an inlet region, via which the refrigerant can be supplied to the heat accumulator, so that heat from the refrigerant supplied to the heat accumulator via the inlet region can be stored in the heat accumulator or heat from the heat accumulator can be transferred to the refrigerant supplied to the heat accumulator via the inlet region;
- and
- an outlet region configured to discharge from the heat accumulator the refrigerant supplied to the heat accumulator via the inlet region;
- and
- a valve device which configured to be switched between:
- a first switching state, in which the heat accumulator is fluidically connected to the refrigerant circuit at a first connection point, which is arranged downstream of the refrigerant compressor, upstream of the condenser section and upstream of the bypass section in the refrigerant circuit, and at a second connection point, which is arranged upstream of the refrigerant compressor in the refrigerant circuit and which is arranged in the refrigerant circuit downstream of the first expansion valve and/or downstream of the second expansion valve, whereby at least one portion of the refrigerant compressed by the refrigerant compressor can be fed to the heat accumulator via the inlet region from the first connection point and the refrigerant discharged from the heat accumulator via the outlet region can be introduced into the refrigerant circuit at the second connection point;
- and
- a second switching state, in which the heat accumulator is fluidically connected to the refrigerant circuit at a third connection point, which is arranged upstream of the refrigerant compressor in the refrigerant circuit and which is arranged in the refrigerant circuit downstream of the first expansion valve and/or downstream of the second expansion valve, and at a fourth connection point, which is arranged downstream of the third connection point and upstream of the refrigerant compressor in the refrigerant circuit, whereby at least one portion of the total mass flow can be fed to the heat accumulator via the inlet region from the third connection point and the refrigerant discharged from the heat accumulator via the outlet region can be introduced into the refrigerant circuit at the fourth connection point.