Hot and cold water air conditioning system
First Claim
1. A hot and cold water air conditioning system that includes a heat pump heat source apparatus including a compressor driven according to an operation frequency, an air-conditioning apparatus configured to perform air conditioning in a room, pipes connecting the heat pump heat source apparatus and the air-conditioning apparatus in a ring shape thereby forming a circulation path, and a water circulation pump configured to circulate water inside the pipes, the system comprising:
- a water temperature sensor configured to detect a temperature of water flowing out of the heat pump heat source apparatus by an operation of the water circulation pump; and
a controller configured to perform, in a heating operation, on/off normal control for the heating operation that turns on the compressor when the water temperature detected by the water temperature sensor becomes lower than a target water temperature and turns off the compressor when the water temperature becomes higher than a first temperature value higher than the target water temperature, whereinthe controller is configured to switch from the on/off normal control for the heating operation, upon repeating an on/off operation of the compressor during an operation of the compressor at a minimum frequency required for the operation of the compressor in the on/off normal control for the heating operation, to on/off restriction control for the heating operation that turns on the compressor when the water temperature becomes lower than a second temperature value lower than the target water temperature and turns off the compressor when the water temperature becomes equal to or higher than a third temperature value higher than the target water temperature.
1 Assignment
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Accused Products
Abstract
The hot and cold water air conditioning system includes a water temperature sensor configured to detect a temperature of water flowing out of the heat pump heat source apparatus by an operation of the water circulation pump, and a controller configured to perform, in a heating operation, on/off normal control that turns on a compressor when the water temperature detected by the water temperature sensor becomes lower than a target water temperature and turns off the compressor when the water temperature becomes higher than a first temperature value higher than the target water temperature, and to switch from the on/off normal control, upon repeating the on/off operation of the compressor at a minimum frequency necessary for an operation of the compressor in the on/off normal control, to on/off restriction control that turns on the compressor when the water temperature becomes lower than a second temperature value lower than the target water temperature and turns off the compressor when the water temperature becomes equal to or higher than a third temperature value higher than the target water temperature.
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Citations
14 Claims
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1. A hot and cold water air conditioning system that includes a heat pump heat source apparatus including a compressor driven according to an operation frequency, an air-conditioning apparatus configured to perform air conditioning in a room, pipes connecting the heat pump heat source apparatus and the air-conditioning apparatus in a ring shape thereby forming a circulation path, and a water circulation pump configured to circulate water inside the pipes, the system comprising:
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a water temperature sensor configured to detect a temperature of water flowing out of the heat pump heat source apparatus by an operation of the water circulation pump; and a controller configured to perform, in a heating operation, on/off normal control for the heating operation that turns on the compressor when the water temperature detected by the water temperature sensor becomes lower than a target water temperature and turns off the compressor when the water temperature becomes higher than a first temperature value higher than the target water temperature, wherein the controller is configured to switch from the on/off normal control for the heating operation, upon repeating an on/off operation of the compressor during an operation of the compressor at a minimum frequency required for the operation of the compressor in the on/off normal control for the heating operation, to on/off restriction control for the heating operation that turns on the compressor when the water temperature becomes lower than a second temperature value lower than the target water temperature and turns off the compressor when the water temperature becomes equal to or higher than a third temperature value higher than the target water temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification