| 摘要 |
<p>In an air conditioner with utilization units, an increase in cost of components constituting a refrigerant circuit is restricted even when the maximum use pressure of the refrigerant circuit is raised. An air conditioner (1) has utilization units (5), a steam compression-type refrigerant circuit (10), and an accumulator (25). The refrigerant circuit (10) has a high-pressure portion (10a) and a low-pressure portion (10b). The high-pressure portion (10a) is constructed by connecting components through which a high- pressure refrigerant with the maximum use pressure of not less than 3.3 MPa can be passed. The low-pressure portion (10b) is constructed by connecting components through which only a low-pressure refrigerant with the maximum use pressure of less than 3.3 MPa can be passed. The accumulator (25) is one of the components constituting the low-pressure portion (10b) and capable of storing, as a liquid refrigerant, a refrigerant circulating in the refrigerant circuit (10). The refrigerant flowing in the low-pressure portion (10b) and the high-pressure portion (10a) is R410A.</p> |
