| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a cooling head etc. which reduces pressure loss of a refrigerant passage and achieves uniform cooling of a cooling object component.SOLUTION: A cooling head includes: a first refrigerant passage which contacts with a cooling object and in which a refrigerant flows; a second refrigerant passage in which the refrigerant flows; and communication holes, each of which is provided between both end parts of the cooling object in the first refrigerant passage when viewed in a flow direction of the refrigerant in the first refrigerant passage and allows the first refrigerant passage and the second refrigerant passage to communicate with each other without having a nozzle therewith.</p> |
