| 发明名称 |
HEAT PUMP APPARATUS |
| 摘要 |
A heat pump apparatus includes a heat source-side refrigeration cycle sequentially connecting a compressor, a heat source-side heat exchanger, an expansion valve, and a heat source side of a cascade heat exchanger, and configured to circulate refrigerant, and a load-side refrigeration cycle sequentially connecting a heat medium sending unit, a load-side heat exchanger, and a load side of the cascade heat exchanger, and configured to circulate a heat medium. The heat source-side heat exchanger and the cascade heat exchanger each have an equivalent diameter of less than 1 mm, which is calculated by 4×S/L, where S represents a cross-sectional area of a fluid passage and L represents a length of a wetted perimeter. |
| 申请公布号 |
US2016320105(A1) |
申请公布日期 |
2016.11.03 |
| 申请号 |
US201415108664 |
申请日期 |
2014.01.23 |
| 申请人 |
MITSUBISHI ELECTRIC CORPORATION |
发明人 |
OKAZAKI Takashi |
| 分类号 |
F25B25/00;F25B13/00 |
主分类号 |
F25B25/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A heat pump apparatus, comprising:
a heat source-side refrigeration cycle sequentially connecting a compressor, a heat source-side heat exchanger, an expansion valve, and a heat source side of a cascade heat exchanger, the heat source-side refrigeration cycle being configured to circulate refrigerant; and a load-side refrigeration cycle sequentially connecting a heat medium sending unit, a load-side heat exchanger, and a load side of the cascade heat exchanger, the load-side refrigeration cycle being configured to circulate a heat medium, the refrigerant being flammable refrigerant or slightly flammable refrigerant, the heat source-side heat exchanger and the cascade heat exchanger each having an equivalent diameter of less than 1 mm, which is calculated by 4×S/L, where S represents a cross-sectional area of a fluid passage and L represents a length of a wetted perimeter. |
| 地址 |
Tokyo JP |
