HEAT MEDIUM CIRCUIT

To suppress increase in a storage space of a whole heat medium circuit when installing a reservoir tank serving as a storage part to the heat medium circuit to manage an amount of a heat medium with expansion of the heat medium and switching of a flow channel.SOLUTION: A heat medium circuit includes: a high-temperature heat medium flow channel 20 including a heating part 21 and a first pump P1 for pumping a heat medium to the heating part; a low-temperature heat medium flow channel 30 including a cooling part 31 and a second pump P2 for pumping the heat medium to the cooling part; a temperature adjustment object heat medium flow channel 40 for delivering the heat medium to a temperature adjustment object; a storage part 50 for storing the heat medium; and a flow channel switching part V1, V2, 60 for switching whether to change the high-temperature heat medium flow channel, the low-temperature heat medium flow channel, and the temperature adjustment object heat medium flow channel into respectively independent flow channels or connected flow channels. The storage part includes: inflow parts 52, 54 connected to the high-temperature heat medium flow channel and the temperature adjustment object heat medium flow channel; and an outflow port 53 connected to the low-temperature heat medium flow channel.SELECTED DRAWING: Figure 1 【課題】熱媒体回路に貯留部としてのリザーバタンクを設けて熱媒体の膨張や流路切替による熱媒体量の管理を行うに際して、熱媒体回路全体の収容スペース増大を抑制する。【解決手段】加熱部２１と当該加熱部へ熱媒体を圧送する第１ポンプＰ１とを含む高温熱媒体流路２０と、冷却部３１と当該冷却部へ熱媒体を圧送する第２ポンプＰ２とを含む低温熱媒体流路３０と、温調対象に熱媒体を送る温調対象熱媒体流路４０と、熱媒体を貯留する貯留部５０と、高温熱媒体流路と低温熱媒体流路と温調対象熱媒体流路とをそれぞれ独立流路にするか接続した流路にするかを切替る流路切替部Ｖ１，Ｖ２，６０と、を備える熱媒体回路であって、貯留部は、高温熱媒体流路と温調対象熱媒体流路に接続される流入口５２，５４を備えると共に、低温熱媒体流路に接続される流出口５３を備えることを特徴とする熱媒体回路を提供する。【選択図】図１