Importance

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Abstract

A temperature adjustment apparatus includes: a first temperature adjustment circuit causing a first pump to circulate a first heat medium; a second temperature adjustment circuit causing a second pump to circulate a second heat medium; and a mixing valve provided between the first temperature adjustment circuit and the second temperature adjustment circuit and mixes the first and second heat media as a mixed heat medium. The temperature adjustment apparatus calculates a target outflow temperature tgtTout of the mixed heat medium flowing out to the second temperature adjustment circuit, calculates the ratio of the first heat medium contained in the mixed heat medium as a flow ratio R from rotational speeds N1 and N2 of the first and second pumps and an opening degree θ of the mixing valve, and calculates an inflow temperature Tin1 of the first heat medium and an inflow temperature Tin2 of the second heat medium from outflow temperatures Tout and R of the mixed heat medium. Further, the temperature adjustment apparatus calculates an opening degree correction coefficient K from R and θ, calculates a target flow ratio tgtR from Tin1, Tin2, and tgtTout, and calculates a target opening degree tgtθ of the mixing valve (16) from tgtR and K to control the opening degree.

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First Claim