Patent ID: 8459340
Filing Date: 2013-06-11
Classification: F28D

Abstract:
1. A flat heat pipe with an evaporator section and a condenser section at opposite ends thereof, the flat heat pipe comprising: a hollow casing; and a first wick structure and a hollow second wick structure received in the casing, the first wick structure extending through both the evaporator section and the condenser section, and the second wick structure in contact with an inner surface of the casing at the evaporator section; the first wick structure at the evaporator section comprising at least one first contact portion, a connecting portion, and at least one first isolated portion, the connecting portion extending through the second wick structure along a radial direction of the casing, the connecting portion directly contacting an annular, curved part of an inner surface of the casing surrounding the first wick structure, the at least one first contact portion in contact with an inner surface of the second wick structure, the at least one first isolated portion isolated from the inner surface of the second wick structure, and the at least one first isolated portion and the inner surface of the second wick structure cooperatively defining a first vapor channel therebetween; the first wick structure at the condenser section comprising at least one second contact portion and at least one second isolated portion, the at least one second contact portion in contact with the inner surface of the casing, the at least one second isolated portion isolated from the inner surface of the casing, and the at least one second isolated portion and the inner surface of the casing cooperatively defining a second vapor channel therebetween; and the first and second vapor channels in communication with each other.