Blower unit of air conditioner for vehicle

Patent metadata

Field	Value
Publication number	US-2016273554-A1
Application number	US-201615070018-A
Country	US
Kind code	A1
Filing date	Mar 15, 2016
Priority date	Mar 16, 2015
Publication date	Sep 22, 2016
Grant date	—

Abstract

Disclosed is a blower unit of an air conditioner for a vehicle which is freely changed in design of an intake unit of a blower case, increases dust collection efficiency of an air filter, and improves continuity of filtration-to-area efficiency so as to increase an exchange cycle of the air filter. The blower unit includes a blower case having an inside air inlet for introducing inside air and an outside air inlet for introducing outside air, a blower wheel disposed inside the blower case and rotated by a blower motor, and an air filter disposed at the upstream side of the blower wheel in an air flow direction to filter impurities. The air filter includes: a main filter part corresponding to an air intake area; and auxiliary filter parts which are formed in the outside direction of the air intake area.

First claim

What is claimed is:

1 . A blower unit of an air conditioner for a vehicle which includes a blower case having an inside air inlet for introducing inside air and an outside air inlet for introducing outside air, a blower wheel disposed inside the blower case and rotated by a blower motor, and an air filter disposed at the upstream side of the blower wheel in an air flow direction to filter impurities,
wherein the air filter includes: a main filter part corresponding to an air intake area; and auxiliary filter parts which are formed in the outside direction of the air intake area.

2 . The blower unit according to claim 1 , wherein the auxiliary filter parts are:
a first auxiliary filter part which extends in a width direction of an intake door; and a second auxiliary filter part which extends in a length direction of the intake door.

3 . The blower unit according to claim 1 , wherein the auxiliary filter parts have air flow gaps relative to the blower case.

4 . The blower unit according to claim 3 , wherein the auxiliary filter parts respectively have cover parts formed above the auxiliary filter parts to have predetermined gaps.

5 . The blower unit according to claim 1 , wherein the auxiliary filter parts have crease expansion parts formed at positions corresponding to joining portions between a shaft of the intake door and an actuator.

6 . The blower unit according to claim 4 , wherein the cover part of the first auxiliary filter part is formed to be stepped in a vertical direction.

7 . The blower unit according to claim 4 , wherein the cover part of the second auxiliary filter part has a rainwater drain groove part.

8 . The blower unit according to claim 2 , wherein the length direction of the intake door extends toward the outside air inlet.

9 . The blower unit according to claim 4 , wherein the gaps between the auxiliary filter parts and the cover part include:
a first gap which is an assembly gap for inserting the air filter into the intake case; and a second gap which is a flow gap for promoting a flow of the air.

10 . The blower unit according to claim 4 , further including:
guide means for guiding some of the air of the main filter part toward the auxiliary filter parts.

11 . The blower unit according to claim 10 , wherein the guide means is a stepped portion formed by a gap between the auxiliary filter parts and the cover part.

12 . The blower unit according to claim 11 , wherein the stepped portion is formed such that an interval between the air filter and the cover part becomes reduced toward the outside.

13 . The blower unit according to claim 11 , wherein the stepped portion has an inclined portion which is downwardly inclined toward the outside in order to guide the flow of the air.

14 . The blower unit according to claim 10 , wherein the guide means is the crease expansion part formed on the air filter.

15 . The blower unit according to claim 14 , wherein the crease expansion part is formed at a boundary between the main filter part and the auxiliary filter parts.

Assignees

• Hanon Systems

Inventors

• Kim Young In
• Kim Yong Sik
• Baek Young Kee
• Lee Jun Min

Classifications

• B60H2001/00085

  of air intake · CPC title

• B60H1/00521

  Mounting or fastening of components in housings, e.g. heat exchangers, fans, electronic regulators · CPC title

• B60H1/00021 Primary

  Air flow details of HVAC devices · CPC title

• F04D29/701 Primary

  especially adapted for elastic fluid pumps · CPC title

• F04D17/10

  for compressing or evacuating · CPC title