Carrier Corporation

Alan S Drucker

King H Kwok

Peter R Bushnell

Robert A Chopko

Robert C Reimann

Chester D Ripka

Belin G Czechowicz

Wayne R Reedy

Yehia M Amr

Andreas Hille

Peter L Cann

Mark W Colton

Alan D Abbott

Charles E Whipple

Mauricio M Salgado

Robert J Backus

Richard D Jeffers

Eric J Nash

Guoquan Zhao

Richard D D'Aversa

Christopher J Dahar

Jack W Sharbaugh

An evaporator unit for use in the air conditioning system of a mass transit vehicle that includes a housing mounted inside the air conditioned section of the vehicle having a return air inlet connected to a supply air outlet by a flow passage. The evaporator coil of the air conditioner is mounted in the flow passage to cool the air moving through the passage. A heater coil is mounted behind the evaporator coil to selectively heat the air moving through the passage. A dehumidifying coil is mounted in front of the evaporator coil that utilizes ambient air to dehumidify the indoor air when the ambient air temperature is at a temperature below that at which the air conditioner cannot reliably operate.

Dehumidifier for use in mass transit vehicle

An air conditioning module having all the necessary components for conditioning air, is so sized and arranged that, when placed in an internal compartment of a bus, has its respective openings register with an existing return air duct and a supply air duct on the bus. The compartments and modules are so arranged that they can be paired in back-to-back relationship, with one on each said of a longitudinal center line of the bus. Each of the modules has an intermediate partition dividing the module into an upper evaporator section and a lower condensing section. A mixer flap is placed in an intermediate position with respect to the partition such that its position may be selectively adjusted to thereby vary the amount of fresh air and return air that is passed through the condenser coil and evaporator coil, respectively.

Integrated air conditioning module for a bus

A travel coach having a passenger and a driver section separated from a cargo area by a floor. The cargo area is divided into bays serviced by large bay doors. An air conditioning system is mounted in the cargo area and includes two electrically driven compressors mounted in one bay and a condenser unit mounted in a neighboring bay. The condenser unit contains a first heat exchanger circuit for servicing a pair of evaporators units and a second heat exchanger circuit for servicing at least one other evaporator unit. The evaporator units are mounted in existing ductwork located beneath the floor of the coach and provide cooling to the passenger and driver sections of the coach. Refrigerant from the evaporators is returned to the compressors to complete the two refrigerant cycles.

Travel coach air conditioning system

A heat exchanger of the plate fin and tube type which comprises two longitudinally extending sections. The two sections each have a planar cross section and form a continuous length. The sections are bent relative to one another with the planar cross sections of the two sections forming an angular relationship therebetween in two different planes. In a preferred embodiment, a further bend is made thereby forming a third longitudinally extending section.

Twice bent heat exchanger coil

A low profile room air conditioner. The low profile is achieved in part by the arrangement of components in its outside section. The fan that moves air through the outside section is of the axial flow type mounted so that its axis of rotation is substantially perpendicular to the base of the enclosure and so that the fan draws air into the outside section through the top of the enclosure. Air discharges from the outside section through an air discharge on a side of the enclosure. Louvers at the air discharge direct the air exiting the enclosure away from the air inlet. A slinger directs droplets of condensate drained from the inside refrigerant-to-air heat exchanger into the air flowing through the outside section. The air carries the condensate on to the outside refrigerant-to-air heat exchanger where it evaporates. The air flow carries the resultant water vapor out of the outside section.

Room air conditioner

A refrigeration expansion valve meters the flow of refrigerant therethrough through a flexible orifice that varies in cross sectional area as a function of the pressure differential across the valve. The flexible orifice is provided in a tubular elastomeric element that is supported at opposite ends by rigid support means. A rigid spacer means is provided for engaging the support means to prevent the pressure differential of the refrigeration system from exerting an axial force on the flexible flow metering element.

Variable area refrigerant expansion device having a flexible orifice

A refrigerant expansion valve meters the flow of refrigerant therethrough through a flexible orifice that increases in cross sectional area as the pressure differential across the valve increases.

Variable area refrigerant expansion device having a flexible orifice for

A mechanical refrigerant expansion valve meters the flow of refrigerant therethrough in one direction through an orifice that varies in cross-sectional area as a function of the pressure differential across the valve. The same valve controls refrigerant flow in the other direction through a fixed area metering orifice.

Dual flow expansion device for heat pump system

A flow metering device for use as an expansion valve in a heat pump system includes a body having a flow passage extending therethrough. Two pistons are moveably disposed within the flow passage. Each piston has a flow metering port extending therethrough and a bypass flow means associated therewith. A refrigerant metering rod is fixed within the flow passage and extends through both metering ports. The rod has two flow metering configurations formed thereupon, each of which cooperates with one of the pistons to define a variable area flow passage within the valve. The pistons are spring biased to closed positions when there is no flow through the valve. Flow in one direction results in metering through the variable area passage defined by one piston and its associated flow configuration and free flow through the bypass means of the other piston. Flow through the valve in the opposite direction reverses the roles of the pistons.

Dual flow variable area expansion device for heat pump system

A refrigeration expansion valve meters the flow of refrigerant therethrough through a flexible orifice that varies in cross-sectional area as a function of the pressure differential across the valve.

A refrigerant expansion device for use in a refrigeration system includes a body having a flow passage extending therethrough. A piston having a flow metering port therethrough is moveably mounted within the flow passage. A flow metering rod is supported within the housing and extends through the flow metering port. The flow metering rod and the flow metering port cooperate to define a flow metering passage between them. The flow metering rod is configured so that the cross sectional area of the metering passage varies relative to the axial position of the piston with respect to the rod. The piston is spring biased and the piston moves relative to the rod as a function of the pressure differential across the piston. The cross sectional area of the flow metering rod is configured to define a defrost metering zone which cooperates with the metering port to provide a defrost flow metering passage, at pressure differentials lower than the normal pressure differential for cooling operation of a system in which the device is to be installed. The defrost metering passage is substantially larger than the flow metering passage required for normal cooling operation of the refrigeration system.

Refrigerant expansion device for optimizing cooling and defrost

A closed refrigeration system is provided with a mass flow limiting device located upstream of the suction inlet of a compressor. The device limits the mass flow supplied to the compressor during pulldown and startup to prevent overloading the motor or engine driving the compressor but has minimal influence on the refrigeration system under equilibrium conditions since it is designed for the specific system parameters.

Refrigeration system with mass flow limiting device

A refrigerant flow metering device which varies the expansion area of the device in response to the differential pressure between refrigerant in the high and low pressure sides of a refrigerant system. The expansion device includes a housing with a flow passage extending therethrough which is divided into a high pressure portion and low pressure portion by a partition. The partition has a flow metering port which extends therethrough and interconnects the high and low pressure portions. An elongated member extends through the flow metering port and cooperates with the flow metering port to define a refrigerant flow metering passageway therebetween. The elongated member is configured to vary the cross-sectional area of the flow metering passage in relation to the position of the elongated member to the flow metering port. Means are provided for supporting the elongated member within the flow passage and for controlling the axial position of the elongated member within the passage in response to the differential pressure between refrigerant in the high pressure portion and the low pressure portion.

Variable area refrigerant expansion device

A refrigerant flow metering device for use in a refrigeration system includes a housing having a flow metering passage extending therethrough. A partition is located within the flow passage of the housing and defines a flow metering port therethrough. The partition divides the flow passage into a high pressure and a low pressure portion. An elongated member extends into the metering port. The elongated member and the metering port cooperate to define a flow metering passage therebetween. The elongated member is configured to vary the cross-sectional area of the flow metering passage in relation to the position of the elongated member to the flow metering port. One end of the elongated rod extends into the low pressure portion of the flow passage. Means are provided for supporting the elongated member within the flow passage and for controlling the axial position of the elongated member within the passage in response to the differential pressure between refrigerant in the low pressure portion and atmospheric pressure.

Growing community of inventors

Dewitt, NY, United States of America

Alan S Drucker