Floor heating system employing heat pump for supplying hot water

Abstract

The problem to be solved in the invention is that, although a direct hot-water supply type is being considered in order to reduce size and weight in a heat pump hot-water supply floor heating device having a floor heating function at the same time, the difference between necessary heating capability in a hot-water supply operation and that in a floor heating operation is large, it can not be handled by conventional control of the number of revolutions of a compressor, and, in particular, separation, loss of synchronism, noise and the like of a compression mechanism part are generated in a low-speed operation in the floor heating operation. This heat pump hot-water supply floor heating device of the invention is solved the conventional problem by executing a heat pump operation in using hot water, by adding a floor heating function to a direct hot-water supply type heat pump water heater for directly supplying heating water to a used terminal, and by skillfully using control of the number of revolutions and capacity control as a control method of a compressor in response to a situation.

Description

technical field [0001] The present invention relates to a heat pump supplying hot water floor heating system, especially to provide a compressor capable of expanding the variation range of the capacity of the compressor, which can correspondingly realize the operation from supplying hot water with a large capacity to a small capacity operation with high operating efficiency. A heat pump running underfloor heating supplies a hot water underfloor heating system. Background technique [0002] In recent years, along with the popularity of heat pumps supplying water heaters, technical solutions with floor heating functions have been proposed. [0003] As such a heat pump water heater, there is, for example, one disclosed in Patent Document 1 - Japanese Patent Application Laid-Open No. 2003-247753. This type of machine performs heat pump operation in advance at night when electricity bills are cheap, boils hot water and stores it in a hot water storage tank, uses the hot water st...

AI Technical Summary

Problems solved by technology

Moreover, although the compressor is designed to meet the requirements of hot water supply with its maximum capacity, it is operated at a low speed during the floor heating operation when the ambient temperature is high, so that the turbo compression mechanism is abnormal due to detachment, imbalance, etc. The main cause of abnormal conditions such as extreme reduction in capacity or noise caused by the situation, and may reduce the reliability

[0010] That is, since there is a large difference between the heating capacity required for hot water supply operation and the heating capacity required for floor heating, the existing compressor speed control cannot meet the requirements. , there may be problems such as detachment or misalignment of the compression mechanism, noise, etc.

[0011] On the other hand, from the point of view of energy saving, when the heat pump operates at a constant water supply temperature, the higher the temperature of the heated and released hot water, the lower the operating efficiency. The faucet supplies hot water and the floor is heated by heat pump operation under the condition of low operating efficiency

[0012] Furthermore, since a large amount of high-temperature hot water is stored in the hot water storage tank, energy loss due to heat dissipation is also a big problem.

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