Heat pump
According to an embodiment of the present invention, a heat pump comprises: a compressor in which a compressor suction flow path and a compressor discharge flow path are connected to each other; a cooling and heating switching valve connected to the compressor suction flow path and the compressor di...
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| Format: | Patent |
| Sprache: | eng ; kor |
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| Zusammenfassung: | According to an embodiment of the present invention, a heat pump comprises: a compressor in which a compressor suction flow path and a compressor discharge flow path are connected to each other; a cooling and heating switching valve connected to the compressor suction flow path and the compressor discharge flow path; an outdoor heat exchanger connected to a heating switching valve with an outdoor heat exchanger connection line; an indoor heat exchanger connected to the cooling and heating switching valve with an indoor heat exchanger connection line; at least one expansion apparatus installed in the heat exchanger connection lines connecting the outdoor heat exchanger and the indoor heat exchanger; an outdoor fan sending outdoor air to the outdoor heat exchanger; a current sensor measuring a current value applied to the outdoor fan; and a control unit alternately performing heating operation and defrosting operation in a heating mode. When the control unit returns to the heating operation after the defrosting operation, the outdoor fan is rotated with the predetermined number of rotation, and an average value of the current value is calculated with a predetermined period. The starting of the defrosting operation is determined with an initial calculated the average value of the current value after returning to the heating operation and a calculated average value of the current value after the initial calculation. Therefore, the optimum data to detect an actual implantation degree of the outdoor heat exchanger can be sampled, and the actual implantation degree of the outdoor heat exchanger can be accurately determined to determine the optimum defrosting operation starting time.
본 실시예는 압축기 흡입유로 및 압축기 토출유로가 연결된 압축기와; 압축기 흡입유로 및 압축기 토출유로가 연결된 냉난방 절환밸브와; 난방 절환밸브와 실외열교환기 연결라인으로 연결된 실외열교환기와; 냉난방 절환밸브와 실내열교환기 연결라인으로 연결된 실내열교환기와; 실외열교환기와 실내열교환기를 연결하는 열교환기 연결라인에 설치된 적어도 하나의 팽창기구와; 실외열교환기로 실외공기를 송풍하는 실외팬과; 실외팬으로 인가되는 전류값을 측정하는 전류 센서와; 난방모드시 난방운전과 제상운전을 교대로 실시하는 제어부를 포함하고, 제어부는 제상운전 후 난방운전으로 복귀시, 실외팬을 설정회전수로 회전시키고, 설정주기로 전류값의 평균값을 산출하며, 난방운전 복귀 후 최초 산출된 전류값 평균값과, 최초 산출 이후에 산출된 전류값의 평균값을 인자로 제상운전의 개시를 판단하여, 실외열교환기의 실제 착상 정도를 감지할 수 있는 최적의 데이터를 샘플링 할 수 있고, 실외열교환기의 실제 착상 정도를 정확도 높게 판단할 수 있기 때문에 최적의 제상운전 개시시점을 판단할 수 있는 이점이 있다. |
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