Evaporator section for a modular bus air conditioner

B - Operations – Transporting – 60 – H

Patent

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Details

B60H 1/00 (2006.01)

Patent

CA 2524202

A module is provided for attachment to the roof of a bus and includes all of necessary components for conditioning the return air from the passenger compartment and delivering conditioned air thereto. A plurality of modules can be stacked in various relationships to collectively provide the total capacity required by the bus. Each module includes an evaporator section, a condenser section and a power section including a compressor and an inverter. The evaporator sections have a return air compartment that extends a substantial distance across the roof of the bus such that a single design can meet the needs of various return air duct installations of various types of buses. A centrifugal fan with its axis oriented either vertically or horizontally is situated so as to receive the flow of return air and blow it through the coil to be conditioned. Provision is made for the selective mixing of return air with fresh air, with the mixture then being passed by the evaporator blower through the evaporator coil and into the supply air ducts.

L'invention concerne un module destiné à être fixé au toit d'un bus et comprenant tous les composants nécessaires pour climatiser l'air de retour en provenance du compartiment passagers et pour y distribuer de l'air climatisé. Une pluralité de modules peuvent être empilés selon diverses configurations de manière à fournir collectivement la capacité totale requise par le bus. Chaque module comprend une unité d'évaporateur, une unité de condenseur et une unité d'alimentation comportant un compresseur et un inverseur. Les unités d'évaporateur comprennent un compartiment d'air de retour couvrant une distance importante sur le toit du bus, une conception unique pouvant ainsi satisfaire aux exigences de diverses installations de conduits d'air de retour de plusieurs types d'autobus. Un ventilateur centrifuge dont l'axe est orienté verticalement ou horizontalement est disposé de façon à recevoir l'écoulement d'air de retour et à le faire traverser le serpentin en vue d'une climatisation. L'air de retour est sélectivement mélangé à de l'air frais, le mélange étant alors poussé par le ventilateur de l'évaporateur à travers le serpentin d'évaporateur et dans les conduits de distribution d'air.

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