Pumpless liquid-cooling heat dissipator

A pumpless liquid-cooling heat dissipator, comprising a cooling head assembly (1) and a condensing assembly (2);

• wherein the cooling head assembly (1) and the condensing assembly (2) are connected through a connecting assembly to form a loop, and the cooling head assembly (1) and the condensing assembly (2) both are filled with a liquid refrigerant;
• wherein the condensing assembly (2) comprises a lower tank (21), an upper tank (22) and a plurality of connecting pipes (23);
• wherein the lower tank (21) is separated into a first half tank (211) and a second half tank (212), one half of the plurality of connecting pipes (23) connect the first half tank (211) with the upper tank (22), and the other half of the plurality of connecting pipes (23) connect the second half tank (212) with the upper tank (22);
• wherein the cooling head assembly (1) is connected with the first half tank (211) and the second half tank (212) of the lower tank (21) individually;
• wherein the connecting assembly is disposed on an outer wall of the lower tank (21) of the condensing assembly (2), the connecting assembly is disposed with at least two refrigerant channels (214) connected with the cooling head assembly (1), some of the at least two refrigerant channels (214) is connected with the first half tank (211) of the lower tank (21), and the other of the at least two refrigerant channels (214) is connected with the second half tank (212) of the lower tank (21);
• wherein the cooling head assembly (1) comprises a contact plate (11) and a housing (12) formed integrally, the contact plate (11) and the housing (12) together define a space for storing the liquid refrigerant, and a refrigerant outlet (121a) and a refrigerant inlet (121b) correspondingly connected with the at least two refrigerant channels (214) are formed on the housing (12);
• and
• wherein the connecting assembly comprises a connecting part (213) extending downwardly from the outer wall of the lower tank (21), the at least two refrigerant channels (214) are formed in the connecting part (213), and the lower tank (21) is fixedly connected to the cooling head assembly (1).