# US 2013/0156554 A1 · Blower motor cooling tube noise suppressor for ticking/chirping > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0156554 A1 - Document ID: US20130156554A1 - Status: Published application - Kind: A1 - Application number: 13/328,020 - Filed: 2011-12-16 - Published: 2013-06-20 - Earliest claimed: 2011-12-16 - Assignees: DENSO International America, Inc. - Inventors: Prakash T. Thawani; Stephen Sinadinos - Web page: https://patentgrep.com/patent/US20130156554A1 ## CPC - F04D 25/082: {the unit having provision for cooling the motor} - B60H 1/00521: {Mounting or fastening of components in housings, e.g. heat exchangers, fans, electronic regulators} - F04D 29/5806: {Cooling the drive system} - B60H 2001/006: {Noise reduction} - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES ## Abstract A blower unit for a vehicle including a fan, a motor, a scroll case, a cooling chamber, a first partition, and a second partition. The fan is configured to generate airflow. The motor is connected to the fan. The scroll case accommodates the fan. The cooling chamber is connected to the scroll case and defines a cooling path for guiding airflow from the fan to the motor. The first partition is arranged in the cooling path. The second partition is arranged in the cooling path spaced apart from the first partition. ## Claims ### Claim 1 A blower unit for a vehicle comprising: a fan configured to generate airflow; a motor connected to the fan; a scroll case accommodating the fan; a cooling path connected to the scroll case, the cooling path guiding a part of the airflow from the fan to the motor; a first surface accommodated in the cooling path, the first surface being generally perpendicular to the part of the airflow directed to the motor; and a second surface accommodated in the cooling path, the second surface being substantially parallel to the first surface; wherein the first surface and the second surface at least partially overlap each other in a direction of the airflow directed to the motor, the first and second surfaces defining a first gap therebetween. ### Claim 2 (depends on 1) The blower unit for a vehicle according to claim 1, wherein the cooling path is built-in to an outer peripheral portion of the scroll case. ### Claim 3 (depends on 2) The blower unit for a vehicle according to claim 2, wherein said motor is accommodated in a motor housing, and said first surface forms a part of the motor housing. ### Claim 4 (depends on 3) The blower unit for a vehicle according to claim 3, further comprising a curved surface provided on an opposite side of the first surface, wherein the motor housing defines an inner cylindrical surface, and the curved surface corresponds to the inner cylindrical surface. ### Claim 5 (depends on 3) The blower unit for a vehicle according to claim 3, wherein the cooling path defines a slope declining from an outer peripheral portion of the scroll case to an edge of the motor housing. ### Claim 6 (depends on 5) The blower unit for a vehicle according to claim 5, wherein the second surface protrudes from the slope into said cooling path. ### Claim 7 (depends on 1) The blower unit for a vehicle according to claim 1, further comprising a third surface accommodated in the cooling path, the third surface being substantially parallel to the second surface; wherein: the second surface and the third surface overlap with each other, and define a second gap therebetween; and the first gap and the second gap have different lengths. ### Claim 8 (depends on 7) The blower unit for a vehicle according to claim 7, wherein the first gap is larger than the second gap. ### Claim 9 (depends on 7) The blower unit for a vehicle according to claim 7, wherein the first, second, and third surfaces are flat surfaces. ### Claim 10 (depends on 1) The blower unit for a vehicle according to claim 1, wherein the first and second surfaces are flat surfaces. ### Claim 11 (depends on 1) The blower unit for a vehicle according to claim 1, wherein the cooling path defines a slope declining from an outer peripheral portion of the scroll case to the motor. ### Claim 12 A blower unit for a vehicle comprising: a fan configured to generate airflow; a motor connected to the fan; a scroll case accommodating the fan; a cooling chamber connected to the scroll case and defining a cooling path for guiding airflow from the fan to the motor; a first partition arranged in the cooling path; and a second partition arranged in the cooling path spaced apart from the first partition. ### Claim 13 (depends on 12) The blower unit of claim 12, wherein the first partition is closer to the motor than the second partition. ### Claim 14 (depends on 12) The blower unit of claim 12, wherein the first partition includes a first surface facing the motor and a second surface facing the second partition, the first surface is curved and the second surface is planar. ### Claim 15 (depends on 14) The blower unit of claim 14, wherein the second partition includes a planar surface that extends parallel to the second surface of the first partition. ### Claim 16 (depends on 12) The blower unit of claim 12, wherein the first partition is integral with the scroll case. ### Claim 17 (depends on 12) The blower unit of claim 12, further comprising a third partition spaced apart from the second partition on a side of the second partition opposite to the first partition. ### Claim 18 A blower unit for a vehicle comprising: a fan configured to generate airflow; a motor connected to the fan and seated within a motor housing; a scroll case accommodating the fan; a cooling chamber connected to the scroll case and defining a cooling path for guiding airflow from the fan to the motor; a sloped surface of the cooling chamber that extends between an outer peripheral portion of the scroll case to an edge of the motor housing; a first partition arranged in the cooling path and extending from the scroll case; and a second partition arranged in the cooling path spaced apart from the first partition and extending from one of the scroll case or the sloped surface. ### Claim 19 (depends on 18) The blower unit of claim 18, wherein the motor housing includes the first partition. ### Claim 20 (depends on 18) The blower unit of claim 18, further comprising a third partition arranged in the cooling path and extending from one of the scroll case or the sloped surface, the third partition is spaced apart from the second partition, and the second partition is between the first partition and the third partition.