Heat medium circulation device
AssigneeCarrier Japan Corporation
InventorsRuna Sekiguchi, Touru Suga
Life of this patent
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Abstract
This heat medium circulation device circulates a heat medium between a heat source unit in outdoor and a utilization-side equipment in indoor by piping and a pump. The heat medium circulation device carries out freeze prevention control to drive the pump when a detected temperature from a heat medium temperature sensor that detects the temperature of the heat medium drops below a threshold while the heat source unit is stopped, and also changes the threshold according to a detected temperature from an outdoor air temperature sensor that detects the temperature of outdoor air.
Claims10
A heat medium circulation device circulating a heat medium between a heat source unit in outdoor and a utilization-side equipment in indoor by a pipe and a pump, the heat medium circulation device comprising:
- an outside air temperature sensor which detects a temperature of the outdoor air;
- a heat medium temperature sensor which detects a temperature of the heat medium;
- and
- a controller which executes freeze prevention control to drive the pump when the temperature detected by the heat medium temperature sensor falls below a threshold value while the heat source unit is stopped, and changes the threshold value in accordance with the temperature detected by the outdoor air temperature sensor.
A heat medium circulation device circulating a heat medium which passed a heat medium heat exchanger between the heat medium heat exchanger and a utilization-side equipment in indoor by a pipe and a pump, the heat medium circulation device wherein
- the heat medium heat exchanger is a part of a heat pump type refrigeration cycle which passes a refrigerant discharged from a compressor through the heat medium heat exchanger, a pressure reducer and an outdoor exchanger and returns the refrigerant to the compressor;
- the heat medium circulation device comprising:
- an outside air temperature sensor which detects a temperature of the outdoor air;
- a heat medium temperature sensor which detects a temperature of the heat medium;
- and
- a controller which executes freeze prevention control to drive the pump when the temperature detected by the heat medium temperature sensor falls below a threshold value while the heat pump type refrigeration cycle is stopped, and changes the threshold value in accordance with the temperature detected by the outdoor air temperature sensor.
Dependencies are inferred from the claim text.