Air-Cooled Plate-Fin Phase-Change Radiator with Composite Capillary Grooves

Abstract

An air-cooled plate-fin phase-change radiator with composite capillary grooves includes a heat exchanger box and a base plate. Inside said base plate, there is a base plate inner cavity holding the working medium. The heat exchanger box includes a cooling medium channel. There are radiating fins I, and phase-change channels set alternately inside the cooling medium channel. The heat exchanger box is mounted on said base plate, connecting the phase-change channels to the base plate inner cavity. The phase-change channels and the base plate inner cavity form a closed phase-change heat exchange chamber. Grooves are set on the inner wall of phase-change channels. There are radiating fins II or metal fiber felt inside said phase-change channels. Capillary channels are set on the inner wall of said base plate inner cavity. The highly integrated radiating fins I-phase-change channel compact structure saves space effectively.

1 . An air-cooled plate-fin phase-change radiator with composite capillary grooves includes a heat exchanger box and a base plate, wherein inside said base plate, there is a base plate inner cavity holding the working medium; the heat exchanger box mentioned includes a cooling medium channel; there are radiating fins I, and phase-change channels set alternately inside the cooling medium channel; the heat exchanger box mentioned is mounted on said base plate, connecting the phase-change channels to the base plate inner cavity, the phase-change channels and the base plate inner cavity form a closed phase-change heat exchange chamber; grooves are set on the inner wall of phase-change channels; there are radiating fins II or metal fiber felt inside said phase-change channels; and capillary channels are set on the inner wall of said base plate inner cavity. 
     
     
         2 . The air-cooled plate-fin phase-change radiator with composite capillary grooves according to  claim 1 , wherein the radiating fins II as well as the radiating fins I mentioned are rectangular staggered-tooth fins, or flat-top sinusoidal staggered-tooth fins or triangular corrugated fins; the capillary channels mentioned are metal fiber felt, and are regular or irregular pores with an equivalent diameter of 0.001-2 mm; and the porosity of the capillary channels is 60%-90%. 
     
     
         3 . The air-cooled plate-fin phase-change radiator with composite capillary grooves according to  claim 1 , wherein the base plate mentioned includes an upper cover base plate and a lower cover base plate; on the inner wall of each base plate, there is metal fiber felt; the upper cover base plate mentioned has bar-shaped holes connecting the base plate inner cavity to the phase-change channels. 
     
     
         4 . The air-cooled plate-fin phase-change radiator with composite capillary grooves according to  claim 1 , wherein between said upper cover base plate and said lower cover base plate, there is a supporting structure; said supporting structure is one or more supporting pillars or supporting ribs, and metal fiber felt is set on the outer wall of the mentioned supporting structure. 
     
     
         5 . The air-cooled plate-fin phase-change radiator with composite capillary grooves according to  claim 1 , wherein the radiating fins I are rectangular staggered-tooth fins with a thickness of 0.05-0.5 mm; the pitch of their rectangular tooth waves is 3-15 mm, and the wave height is 2-30 mm; and the opening width of rectangular tooth incision is between 0.5 mm and a quarter of the wave pitch. 
     
     
         6 . The air-cooled plate-fin phase-change radiator with composite capillary grooves according to  claim 1 , wherein with both the width and the depth of 0.1-1.5 mm, the grooves mentioned connect with the pores of capillary channels. 
     
     
         7 . The air-cooled plate-fin phase-change radiator with composite capillary grooves according to  claim 1 , wherein a phase-change channel consists of two parallel partitions and the side sealing tapes on both ends of the partitions; the top of a phase-change channel is sealed by a top sealing tape; and there are grooves on the side of partitions and sealing tapes towards the phase-change channel. 
     
     
         8 . The air-cooled plate-fin phase-change radiator with composite capillary grooves according to  claim 1 , wherein said radiating fins I are clamped between the partitions from both sides of the cooling medium channels; there are air sealing tapes at the top and bottom of the mentioned cooling medium channel, and there are side guard plates on both sides of the heat exchanger box mentioned. 
     
     
         9 . The air-cooled plate-fin phase-change radiator with composite capillary grooves according to  claim 1 , wherein the base material of phase-change radiator mentioned is aluminum, aluminum alloy, copper, or copper alloy.