| 摘要 |
<p>Heat exchanger, more especially evaporator for use in a refrigeration cycle device in which carbon dioxide is used as a refrigerant, including a pair of plate materials (76,70B), the whole periphery of a peripheral portion of an outer plate (76) as at least one of the plate materials (76) being secured to the other plate material (70B) constituting a bottom surface of an inner tank (70) to constitute a sealed refrigerant passage space (77) between the plate materials (76,70B), a portion of the outer plate (76) other than the peripheral portion being provided with a plurality of secured inner portions (78) which are secured at predetermined intervals to the bottom surface (70B), and a plurality of refrigerant inlet tubes (16A) and refrigerant outlet tubes (16B) being attached so as to communicate with the refrigerant passage space (77).</p> |
