| 摘要 |
PURPOSE:To provide a heat accumulative device using refrigerant without using any thermal insulating material so as to make itself a small size, have an improved thermal radiation efficiency and an improved price by a method wherein refrigerant is flowed within an inner pipe of double pipe structure and heat accumulative agent is filled out of an inner pipe within an outer pipe. CONSTITUTION:Five heat accumulative tubes 7 having circular section are passed in parallel within a thermal radiation tube 4 having an elippse section. Heat accumulative tubes 7 pass through heat accumulative agent filling chambers 2, 3 and project out of the chambers, thereafter they are bent into U-shape and the upper and lower heat accumulative tubes 7 are connected to each other in a zig-zag form. Five heat accumulative tubes 7 passing through the uppermost stage heat radiation tube 4 pass through the heat accumulative agent filling chamber 2, communicate with a common connecting tube 8. Refrigerant is supplied to the connecting tube 8 through a thermo-sensitive expansion valve 10. A circumference of each of the heat accumulative tubes 7 is covered by the filled heat accumulative agent. With such an arrangement as above, it is possible to utilize the outer tube as a thermal radiation tube, make an integral formation of a heat exchanger and provide a small-sized device. |
