Air Conditioning Unit

a technology for air conditioning and air conditioners, applied in space heating and ventilation, lighting and heating apparatuses, heating types, etc., can solve the problems of deterioration of heat exchange performance, increased blower power, turbulence in flow, etc., to achieve lessen the improvement effect, increase the static pressure of air, and easily cause turbulence in flow
US20160223211A1Inactive Publication Date: 2016-08-04HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
Publication Date
2016-08-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention provides an air conditioning unit having an indoor unit, the indoor unit including: a casing; a centrifugal fan having a hub, a shroud, and blades disposed therebetween; and an indoor heat exchanger which surrounds the centrifugal fan, the casing containing the centrifugal fan and the indoor heat exchanger. In the indoor unit, the indoor heat exchanger has a planar air inflow surface allowing an inflow of air discharged from an air outlet of the centrifugal fan, the air inflow surface is provided with a rectifying member, the rectifying member includes a support having an insertion portion fixed between fins on the air inflow surface, and a vane having a shape extending from the support toward a direction opposite a rotating direction of the centrifugal fan, the rectifying member configured to block some of the air flowing between the centrifugal fan and the air inflow surface, and an angle formed by the insertion portion and the vane in the plane orthogonal to a rotation axis of the centrifugal fan is set to become parallel to the air inflow from the air outlet to the air inflow surface at least at the hub side to increase a static pressure of the air at upstream and downstream sides of the vane.
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Description

CLAIM OF PRIORITY

[0001] The present application claims priority from Japanese Patent application serial No. 2015-017048, filed on Jan. 30, 2015, the content of which is hereby incorporated by reference into this application.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention relates to an air conditioning unit.

[0004] 2. Description of Related Art

[0005] An air conditioning unit includes an indoor unit, an outdoor unit, and a piping for connecting the indoor unit and the outdoor unit. There are various types of indoor units including a ceiling embedded cassette type.

[0006] The ceiling embedded cassette type indoor unit generally includes a centrifugal fan which takes in air from a rotation axial direction and discharges the air from an outer periphery portion, and a heat exchanger with a polygonal shape for externally surrounding the centrifugal fan.

[0007] The above-described structure is configured that the air discharged from the centrifugal fan is obliq...

Claims

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