VEHICLE TEMPERATURE CONTROL SYSTEM AND TEMPERATURE CONTROL METHOD

To improve a system comprising a first circuit and a second circuit both capable of operating as heat medium circuits and a mechanism capable of coping with a volumetric change due to temperature fluctuation of a heat medium.SOLUTION: A heat medium circuit comprises: a high-pressure side heat exchanger; a low-pressure side heat exchanger; an outdoor heat exchanger; a temperature control unit; a reserve tank allowing suction sections of a first pump and a second pump to be connected thereto; and a connection valve which switches between a one-side connection state where either the first pump or the second pump is connected to the reserve tank and a both-side connection state where both the first pump and the second pump are connected to the reserve tank as connection states to the reserve tank. The heat medium circuit is adapted to be able to: parallelly arrange a first circuit which includes the low-pressure side heat exchanger and corresponds to the first pump and a second circuit which includes the high-pressure side heat exchanger and corresponds to the second pump; and arrange the low-pressure side heat exchanger and the high-pressure side heat exchanger in a serial circuit corresponding to the first pump and the second pump.SELECTED DRAWING: Figure 1 【課題】熱媒体の回路としての区分可能な第１回路と第２回路とを備えるとともに、熱媒体の温度変化による体積の変化に対応可能な機構を備えるシステムの改善に関する。【解決手段】熱媒体回路は、高圧側熱交換器と、低圧側熱交換器と、室外熱交換器と、温調機器と、第１ポンプおよび第２ポンプのそれぞれの吸込部が接続可能に構成されるリザーブタンクと、第１ポンプおよび第２ポンプに対し、リザーブタンクへの接続状態として、一方が接続される一方接続状態と、両方が接続される両方接続状態とのいずれかを与える接続弁とを備える。熱媒体回路は、低圧側熱交換器を含み、第１ポンプに対応する第１回路と、高圧側熱交換器を含み、第２ポンプに対応する第２回路とを並列的に設定可能に構成されるとともに、直列に配置される低圧側熱交換器および高圧側熱交換器を含み、第１ポンプおよび第２ポンプに対応する直列回路を設定可能に構成される。【選択図】図１