# US 2010/0166580 A1 · Fan and fan housing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0166580 A1 - Document ID: US20100166580A1 - Status: Published application - Kind: A1 - Application number: 12/397,900 - Filed: 2009-03-04 - Published: 2010-07-01 - Earliest claimed: 2008-12-31 - Assignees: Delta Electronics, Inc. - Inventors: Chung-Kai LAN; Chen-Mo JIANG; Hung-Chi CHEN - Web page: https://patentgrep.com/patent/US20100166580A1 ## CPC - F04D 29/54: Fluid-guiding means, e.g. diffusers - F04D 25/08: the working fluid being air, e.g. for ventilation - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) ## Abstract A fan includes a fan housing, a motor and an impeller. The fan housing includes a first pressure area, a second pressure area and a guiding portion. The pressure of the first pressure area is higher than the pressure of the second pressure area. The guiding portion has a first end and a second end, the first end of the guiding portion is disposed at the first pressure area and the second end of the guiding portion is disposed at the second pressure area for draining moisture gathered in the fan housing away from the first pressure area to the second pressure area. The motor is disposed in the fan housing, and the impeller is connected with the motor. ## Claims ### Claim 1 A fan housing, comprising: a first pressure area; a second pressure area, wherein a pressure of the first pressure area is higher than a pressure of the second pressure area; and a guiding portion comprising a first end disposed at the first pressure area and a second end disposed at the second pressure are, for draining moisture gathered in the fan housing away from the first pressure area to the second pressure area. ### Claim 2 (depends on 1) The fan housing according to claim 1, further comprising a motor base, and the first pressure area is located at a bottom of the motor base. ### Claim 3 (depends on 2) The fan housing according to claim 2, wherein the motor base further comprises a loading portion, the first pressure area further comprises a moisture collecting part disposed at the loading portion, and the moisture collecting part is concave. ### Claim 4 (depends on 3) The fan housing according to claim 3, wherein the moisture collecting part further comprises an inclined plane. ### Claim 5 (depends on 3) The fan housing according to claim 3, wherein the first end of the guiding portion is disposed at the bottom of the moisture collecting part of the first pressure area. ### Claim 6 (depends on 5) The fan housing according to claim 5, wherein a cross section of the moisture collecting part is circular, semicircular, oval, semi-oval or water drop shaped. ### Claim 7 (depends on 3) The fan housing according to claim 3, wherein an electronic element is disposed on a side distant from the moisture collecting part of the loading portion. ### Claim 8 (depends on 1) The fan housing according to claim 1, further comprising a main body, wherein the second pressure area is located at a flowing path of the main body, and the second end of the guiding portion is connected with the main body. ### Claim 9 (depends on 1) The fan housing according to claim 1, wherein the guiding portion is a single pipe or a pipe unitary in construction with the fan housing. ### Claim 10 (depends on 1) The fan housing according to claim 1, wherein the fan housing is applied to a centrifugal fan. ### Claim 11 A fan, comprising: a fan housing, the fan housing comprising: a first pressure area; a second pressure area, wherein a pressure of the first pressure area is higher than a pressure of the second pressure area; and a guiding portion comprising a first end disposed at the first pressure area and a second end disposed at the second pressure area, for draining moisture gathered in the fan housing away from the first pressure area to the second pressure area; a motor disposed in the fan housing; and an impeller connected with the motor. ### Claim 12 (depends on 11) The fan according to claim 11, wherein the fan housing further comprises a motor base, and the first pressure area is located at a bottom of the motor base. ### Claim 13 (depends on 12) The fan according to claim 12, wherein the motor base further comprises a loading portion, the first pressure area further comprises a moisture collecting part disposed at the loading portion, and the moisture collecting part is concave. ### Claim 14 (depends on 13) The fan according to claim 13, wherein the moisture collecting part further comprises an inclined plane. ### Claim 15 (depends on 14) The fan according to claim 14, wherein the first end of the guiding portion is disposed at the bottom of the moisture collecting part of the first pressure area. ### Claim 16 (depends on 13) The fan according to claim 13, wherein an electronic element is disposed on a side distant from the moisture collecting part of the loading portion. ### Claim 17 (depends on 11) The fan according to claim 11, wherein the fan housing further comprises a main body, wherein the second pressure area is located at a flowing path of the main body, and the second end of the guiding portion is connected with the main body. ### Claim 18 (depends on 11) The fan according to claim 11, wherein the guiding portion is a single pipe or a pipe unitary in construction with the fan housing. ### Claim 19 (depends on 11) The fan according to claim 11, wherein the fan is a centrifugal fan applied to an air conditioner of a car.