Air conditioning system
AssigneeDenso Corporation
InventorsToru Tanaka, Teruhiko Kameoka, Koji Ito, Koji Matsunaga
Life of this patent
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Abstract
An air conditioning system suitable for automotive application is disclosed, in which the noise in the frequency range of about 1 kHz to 2 kHz is reduced. At least a sound absorbing member is arranged over the portions extending from a turning section of an air path where the air blown under pressure from a blower impinges and changes direction toward a heat exchanger, i.e. from the spiral end of a scroll casing to the front of an evaporator.
Claims8
An air conditioning system comprising a heat exchanger (1), a blower (3) for blowing air under pressure to said heat exchanger (1), and an air conditioning casing (4) constituting at least a part of an air path (40) for leading the air blown under pressure from said blower (3) to said heat exchanger (1);
- wherein
- said blower (3) is a centrifugal type including a spiral scroll casing (31) and a multi-blade fan (32),
- a portion of said air path (40) upstream of said heat exchanger (1) is formed with a turning section (7) for causing the air flow to impinge thereon and change the direction thereof toward the heat exchanger (1), and
- a sound absorbing member (8) is arranged over the portions extending from a spiral end (31b) of an inner wall (31a) of said spiral scroll casing where the air flow generated in a radial direction in said scroll casing (31) impinges and changes direction, to an inner wall (4a) of said air conditioning casing (4) smoothly connected to the inner wall of said spiral end (31b).
An air conditioning system comprising:
- a heat exchanger;
- a blower for blowing air under pressure to said heat exchanger;
- and
- an air conditioning casing constituting at least a part of an air path for leading the air blown under pressure from said blower to said heat exchanger;
- wherein
- said blower is a centrifugal type blower including a spiral casing and multi-blade fan;
- a portion of said air path upstream of said heat exchanger is formed with a turning section having an inner wall for causing the air flow to impinge thereon and change the direction thereof toward the heat exchanger;
- a spiral end of an inner wall of said spiral casing forms a smooth transition to the inner wall of said turning section;
- and
- a sound absorbing member is located from the spiral end of the inner wall of the spiral casing to the inner wall of said air conditioning case.
Dependencies are inferred from the claim text.