Abstract: An apparatus and method for condensing water vapor in air to extract liquid water in which a refrigeration system defines a closed-loop refrigerant path. The refrigeration system includes a main portion, a first branch portion and a second branch portion. The first branch portion and the second branch portion each have an entrance and an exit in fluid communication with the main portion. The first branch portion includes a first evaporator operable at a temperature of at most a dew point of air contacting the first evaporator to cause liquid water to condense on an exterior surface of the first evaporator. The second branch portion includes a second evaporator. A first water vessel is positioned proximate to the first evaporator for collecting water from the exterior surface of the first evaporator. A second water vessel is positioned proximate to the second evaporator for holding water chilled by the second evaporator. A conduit transports water from the first water vessel to the second water vessel.

Abstract: A transport refrigeration unit includes an integrally mounted unitary engine driven generator wherein the generator is cooled by the circulation of oil over the stator coils and the rotor to thereby provide a cooling system that is closed from the outside environment and capable of increased cooling efficiencies. In one embodiment, the circulation of the engine oil is integrated into the generator such that its serves the dual purpose of cooling the generator. In other embodiments, the oil is contained entirely within the generator and is circulated by various means such as by a pump and spray, a slinger or total immersion.

Abstract: A refrigerant system is provided with at least two stages of compression connected in series. An intercooler is positioned intermediate the two stages and is cooled by an indoor air stream. The intercooler is positioned to be in a path of air flow passing over an indoor heat exchanger, and preferably downstream of the indoor heat exchanger, in relation to this airflow. The intercooler cools the refrigerant flowing between the two compression stages as well as provides the reheat function. Benefits with regard to system performance (efficiency, capacity and reliability) are achieved with no additional circuitry or components required to provide the intercooler and reheat functions. This invention is particularly important for the CO2 refrigerant systems operating in the transcritical cycle. Methods of control are presented for both the intercooler and reheat functions.

Abstract: If the degree of opening of an electronic expansion valve (14) continues to remain below a specified degree of opening or if the degree of superheat of an evaporator (15) continues to remain above a predetermined degree of superheat, it is determined that the refrigerant circulation amount is in short supply in the water-cooled operation mode, and an air-cooled condenser fan (21) is tuned on.

Abstract: A monolithic air conditioner includes a cabinet, an outdoor heat exchanger mounted on a rear-inner portion of the cabinet and spaced away from a sidewall of the cabinet, a guide member attached on a rear surface of the outdoor heat exchanger, and a fan assembly disposed in the cabinet to introduce the outdoor air. The guide member has an air exhausting guide unit and an air introduction guide unit extending from the air exhausting guide section.

Abstract: A vapor compression system includes a timer and a controller for periodically starting up the system during the off-season periods (primarily non-cooling months) in which the system would normally be shut down. This provides periodic lubrication to the compressor components and prevents severe flooded starts due to excessive accumulation of refrigerant in the compressor (compressor oil sump in particular) and other system components. Provision is also made to sequentially turn on and off system components such as the compressor, the evaporator fan and the condenser fan to enhance the system operation. The timing sequences are provided for the time intervals between the startups, as well as the off-season operation cycle times.

Abstract: An indoor unit for a multi-directional air supply air conditioner capable of performing at least a heating operation includes: an indoor fan (39) for sucking air in an axial direction thereof and radially blowing out the air; and a heat exchange part (38), connected in a refrigerant circuit (80) and disposed to surround the indoor fan (39), for exchanging heat between the air blown out of the indoor fan (39) and refrigerant in the refrigerant circuit (80). The heat exchange part (38) includes a plurality of heat exchangers (48) separated from each other along the direction of the perimeter thereof and connected in parallel with each other in the refrigerant circuit (80).

Abstract: A refrigerator with a cooled inner chamber and a cooling circuit for a refrigerant, wherein the cooling circuit has a heat exchanger in the cooled inner chamber, a compressor for the refrigerant and a condenser on the outside of the refrigerator. According to the invention, a heat-storage material is in contact with the condenser.

Abstract: A refrigerator includes a housing including a cooling compartment and a machine compartment, a refrigeration cycle provided in the housing and including a compressor, a condenser, a decompressor, and an evaporator which provide a refrigerant path, a refrigerant provided in the refrigeration cycle and flowing in the refrigerant path, and a blower for cooling the condenser. The condenser includes a pipe and a fin mounted on the pipe. The pipe is formed to have a helical shape with gaps. The helical shape has an inner space, a first opening, and a second opening opposite to the first opening. The inner space has a substantially cylindrical shape between the first opening and the second opening. The first opening faces the blower. A flow resistance between the second opening and the inner space is larger than a flow resistance between the gaps of the helical shape and the inner space.

Abstract: A FC radiator in a FC cooling system, an EV radiator in a driving device cooling system, and a condenser in an air conditioning cooling system are arranged in one plane substantially perpendicular to a direction in which a fuel cell vehicle moves forward at a front portion of the fuel cell. Also, heat exchangers are arranged in order of the condenser, the EV radiator, and the FC radiator, that is, in order of an operating temperature from an upper position to a lower position. An angle of plural fins fitted to a front grille is changed according to a load of a fuel cell and a vehicle speed, each of the plural fins being formed to have an elongate rectangular plate shape extending in a horizontal direction.

Abstract: A refrigerant system (10, 100, 200) is provided with a power control system (30, 130, 230). The power control system adjusts the speed of the motors driving the refrigerant system components such as a compressor, a fan or a pump via a variable speed device (75, 175, 275) or bypasses the variable speed device (75, 175, 275) for normal operating speeds. A single power control system may be provided for the entire refrigerant system or each component may be independently controlled.

Abstract: To provide a heat converter for condensation that can be miniaturized and reduced in weight and can promote miniaturization, cost reduction and energy saving of a refrigeration system using the heat converter to thereby contribute to global environment conservation, and a refrigeration system using the heat converter.

Abstract: A heat exchanger module includes a condenser for condensing a refrigerant, a modulator, a sub-cooler for cooling liquid refrigerant supplied from the modulator, and a heat exchanger for cooling a fluid different from the refrigerant. The condenser, the sub-cooler and the heat exchanger are arranged in an arrangement direction substantially perpendicular to an air flow direction. Further, the modulator is disposed to extend in the arrangement direction. In the heat exchanger module, the modulator has a dimension that is larger than the sum of a dimension of the condenser and a dimension of the sub-cooler, and is not larger than the sum of the dimension of the condenser, the dimension of the sub-cooler and a dimension of the heat exchanger, in the arrangement direction. Accordingly, a capacity of the modulator can be effectively increased without increasing a largest outer side of the heat exchanger module.

Abstract: A retrofit installation kit for use with such as an exteriorly located air conditioner condensing unit. The kit includes a flexible filtration screen and a set of customized fasteners which substitute for existing fasteners used to hold together the outer sheathing of the unit frame. The substitution of fasteners for the typical mounting screws utilized in the original unit construction precludes the possibility of such as damaging the unit due to drilling new fastener holes, this running the risk of rupturing fluid coils within the unit, or damaging other sensitive electrical or mechanical components.

Abstract: A refrigeration system includes an evaporator, a compressor compressing a refrigerant coming out of the evaporator, a condensing unit which includes a finned tube guiding the refrigerant from the compressor back to the evaporator; and an energy saving arrangement. The energy saving arrangement includes a water-cooling device frequently introducing a predetermined amount of water to a surface of the finned tube to water-cool the refrigerant within the finned tube for enhancing a cooling efficiency of the condensing unit while being energy efficient. The energy saving arrangement further includes a metering device for controllably pumping the refrigerant from the condensing unit to the evaporator especially when a pressure inside the condensing unit is lower than a threshold pressure.

Abstract: A filter assembly for a structure having an air intake, the filter assembly including a filter media that is sized and shaped to cover the air intake. The ends of the filter media are connected by an elastic fastener, such that the filter media and the fastener encircle the structure and are under tension to hold the filter assembly on the structure. The filter media is a web of synthetic fibers, such as a web of fibers woven in a 3-dimensional pattern or a nonwoven mesh.

Abstract: A heat exchanger module includes a condenser for condensing a refrigerant, a modulator, a sub-cooler for cooling liquid refrigerant supplied from the modulator, and a heat exchanger for cooling a fluid different from the refrigerant. The condenser, the sub-cooler and the heat exchanger are arranged in an arrangement direction substantially perpendicular to an air flow direction. Further, the modulator is disposed to extend in the arrangement direction. In the heat exchanger module, the modulator has a dimension that is larger than the sum of a dimension of the condenser and a dimension of the sub-cooler, and is not larger than the sum of the dimension of the condenser, the dimension of the sub-cooler and a dimension of the heat exchanger, in the arrangement direction. Accordingly, a capacity of the modulator can be effectively increased without increasing a largest outer side of the heat exchanger module.

Abstract: A system for cooling a data center includes a plurality of cooling racks, with each cooling rack including a housing and cooling system components supported by the housing. The system further includes a fluid communication system coupled to the cooling system components of the plurality of racks. The fluid communication system is configured to provide chilled coolant to and exhaust heated coolant from coolant system components of each cooling rack. The system also includes at least one controller coupled to each cooling rack of the plurality of cooling racks to control the operation of each cooling rack. The plurality of cooling racks and the fluid communication system are configured to be modular to allow placement of cooling racks in different locations in a row of equipment racks within the data center. Methods of cooling a data center are further disclosed.

Abstract: A screen assembly, associated kit and method of forming the same. The screen assembly is adapted to filter intake air passing through an exterior surface of an air processing unit, and includes a substantially rectilinear screen mesh having opposing top and bottom edges, opposing proximal and distal edges, and top and bottom contact surfaces which laterally extend along the respective extents of the top and bottom edges. The screen mesh is formed from a plurality of transversely aligned, spaced apart filaments arranged to filter contaminants from the inlet air. Opposing first and second attachment members respectively secure the proximal and distal edges to the exterior surface so as to apply a tension force to the screen mesh which seals the top and bottom contact surfaces in direct contacting abutment against the exterior surface, thereby eliminating the need for one or more mechanical fasteners along the top and bottom edges.

Abstract: An air conditioner is disclosed. The air conditioner includes a frame having air suction holes formed at upper and opposite lateral surfaces thereof and an air discharge hole formed at a front surface thereof, a heat exchanger having upper, left and right heat exchanger portions located along the air suction holes, and a fan disposed below the heat exchanger and adapted to suction air from radial and rearward directions thereof and to blow the air in a forward direction.

Abstract: Disclosed herein is a turn-fin condenser. The turn-fin condenser employs a turn-fin tube adhesively wound in a spiral shape around an outer surface of the tube in which refrigerant flows. The condenser comprises a coil type turn-fin tube 10 wound in a coil shape and fixed by inner and outer brackets 20 and 30 surrounding an outer peripheral surface of the coil type turn-fin tube, a motor 40 positioned in an inner space formed by the coil type turn-fin tube 10, a blowing fan 50 for taking ambient air in the coil type turn-fin tube 10 after being driven by the motor 40, and a tube wall 80 spirally wound with tube 11 extending out of the inner and outer brackets 20 and 30 at the rear side of the coil type turn-fin tube 10. The turn-fin condenser is easily manufactured and allows a greater quantity of air contact with turn-fins, thereby enhancing heat exchange efficiency.

Abstract: The present invention reduces the size of an outdoor refrigerator unit of the type that draws in air from a lateral face, exchanges heat with the air, and blows the air out of a top face while ensuring that the electrical equipment box has sufficient volume and suppressing the increase in the air flow resistance. The air conditioning system outdoor unit is of the type that draws in air from air inlets provided in the rear panel and a pair of side panels of a casing, exchanges heat with the air, and blows the air out through an air outlet provided in a top panel. The outdoor unit is provided with an axial fan and an electrical equipment box arranged inside the casing. The electrical equipment box is arranged inside the casing and has a first box part that is provided below the axial fan and a second box part that is provided below the first box part and has a larger surface area in a plan view than the first box part.

Abstract: The invention pertains to a stationary vehicle air conditioning system with a refrigerant circuit, in which at least one compressor circulates the refrigerant to at least two condensers. The at least one compressor may be powered by the vehicle's mechanical power, by an electrical source, or by a combination of these driving forces. Depending on desired operating characteristics, the condensers may be arranged in a series or parallel configuration. A second compressor also may be added, which second compressor may be powered by a source other than the mechanical energy of the vehicle's engine.

Abstract: The present invention provides a radiator or condenser used in an air conditioning system. The radiator comprises at least one radiator unit, wherein the radiator unit includes at least two lobes, two of the at least two lobes facing to and hermetically attaching to each other, and at least one through hole disposed in the middle part of the two lobes along the height thereof. The present invention also provides a radiator unit or condenser unit used to form the radiator or condenser.

Abstract: A filter assembly for a structure having an air intake, the filter assembly including a filter media that is sized and shaped to cover the air intake. The ends of the filter media are connected by an elastic fastener, such that the filter media and the fastener encircle the structure and are under tension to hold the filter assembly on the structure. The filter media is a web of synthetic fibers, such as a web of fibers woven in a 3-dimensional pattern or a nonwoven mesh.

Abstract: The subject invention pertains to a method and apparatus for cooling. In a specific embodiment, the subject invention relates to a lightweight, compact, reliable, and efficient cooling system. The subject system can provide heat stress relief to individuals operating under, for example, hazardous conditions, or in elevated temperatures, while wearing protective clothing. The subject invention also relates to a condenser for transferring heat from a refrigerant to an external fluid in thermal contact with the condenser. The subject condenser can have a heat transfer surface and can be designed for an external fluid, such as air, to flow across the heat transfer surface and allow the transfer of heat from heat transfer surface to the external fluid. In a specific embodiment, the flow of the external fluid is parallel to the heat transfer surface.

Abstract: The invention pertains to a stationary vehicle air conditioning system with a refrigerant circuit, in which a compressor circulates refrigerant through a refrigerant circuit including at least one condenser. The one compressor may be powered by the vehicle's mechanical power, by an electrical source, or by a combination of these driving forces. Depending on desired operating characteristics, a plurality of condensers may be arranged in a series or parallel configuration within the circuit, and a second compressor also may be added, which second compressor may be powered by a source other than the mechanical energy of the vehicle's engine. A plurality of fans may be positioned and selectively operable to provide cooling air streams to one or more of the condensers, with the vehicle engine mechanically driving one fan and an electrical power source driving another fan.

Abstract: A condenser coil for a refrigerated beverage and food service merchandiser includes a plurality of parallel fins or V-shaped fins between adjacent tubes. In order to reduce the likelihood of fouling by the bridging of fibers therebetween, the spacing of the fins is maintained at a distance of 0.4 to 0.8 inches apart. In one embodiment, the coil includes a plurality of flat multichannel tubes, with no fins therebetween, and the spacing between the multichannel tubes is maintained in the range of 0.4 to 0.8 inches. In one embodiment, the coil includes at least one serpentine shaped, multichannel tubes, with no fins therebetween, and the spacing between flat, parallel segments of the multichannel tubes is maintained in the range of 0.4 to 0.8 inches.

Abstract: The invention provides an improved air chiller unit mounted on an aircraft for sending cooled air to service carts for serving meals. An air chiller unit is equipped with a refrigeration cycle unit disposed on a casing. The refrigeration cycle unit is equipped with a compressor, a condenser, an evaporator and so on for a refrigerant, and the cooled air is sent via a blower device 60 to a galley etc. A housing 630 of the blower device 60 has an inlet and two outlets 650, 652 for cooled air. A duct member is inserted to one of the two outlets 650 and 652, and the other outlet is sealed. The casing 10 is formed of a honeycomb panel. Since the honeycomb panel has high flexural rigidity, the base plate can support the refrigeration cycle unit by itself. Further, since the panel has superior heat insulating property, the air cooling efficiency can be improved.

Abstract: A modularized high efficiency cooling device in a cooling mechanism, which includes at least one exchanger, at least one gas cooling device, at least one water cooling unit, at least one chiller unit, at least one chiller pump and at least one pair of copper tube. The cooling device adopts modularized design so that it can be assembled to form different units according to consumer demands and has an effect of frequency conversion. The assembled unit can be installed in different places. One machine of the cooling device can be maintained individually as well as the other machines of the cooling device that are in use normally. This reduces maintenance fees and is convenient.

Abstract: A unitary air conditioning system comprises an outdoor unit including a compressor for compressing a refrigerant, an outdoor heat exchanger for heat exchange of the refrigerant and an expander connected to the outdoor heat exchanger, for expanding the refrigerant; a duct installed inside a zone of a building; a central blower unit having a heat exchanger connected to the outdoor unit through a first refrigerant pipe and a blower for supplying the air heat-exchanged by the heat exchanger to the duct; and an individual blower unit including a heat exchanger connected to the outdoor unit through a second refrigerant pipe and a fan for sending the air heat-exchanged by the heat exchanger and disposed in a zone in the building, for individually cooling or heating the zone.

Abstract: An upright refrigerator including a cabinet having in a lower position a compartment housing the usual compressor of the appliance refrigeration circuit. The compartment having an aperture at the rear in proximity to a rear wall of the cabinet and the cabinet comprising side walls having portions projecting from the bottom wall of the compartment supporting the compressor towards a surface on which the refrigerator rests. The cabinet having a cavity defined by the side walls of the cavity and the lower wall of the cabinet, between the lower wall and the bottom wall of the compartment there is a lower aperture below the usual door of the refrigerator, the lower aperture communicating with the aperture of the compartment. A filter member is removably positioned in the cavity to retain the impurities present in the air entering from the aperture of the lower wall of the cabinet and directed towards its rear aperture.

Abstract: It is an object of the present invention to provide a refrigerant cycle apparatus which can optimize the capability of releasing heat from a refrigerant in a gas cooler and an auxiliary heat exchanger under use conditions at a low cost. There are provided an intermediate cooling circuit which once releases heat from a refrigerant discharged from a compressor and then returns the refrigerant to the compressor, and a fan which ventilates an inter cooler of the intermediate cooling circuit and a gas cooler. The inter cooler has substantially the same ventilation area as that of the gas cooler.

Abstract: A piping structure of an air conditioner causes a looped main piping connected to a compressor of an outdoor unit of the air conditioner to be branched into two or more branch pipings within a predetermined interval of the main piping and cause the branch pipings to be jointed at an arbitrary location. According to the piping structure, it is possible to reduce a vibration by an interference phenomenon, which is generated when either a refrigerant pulsation or a periodic vibration of the compressor is divided and then combined.

Abstract: Disclosed is a built-in refrigerator provided in a sink and effectively discharging heat from a condenser and a compressor. The built-in refrigerator includes a cabinet provided in the sink and a component chamber at a rear bottom thereof and a dust guard provided at a front bottom of the cabinet; a compressor provided in the component chamber; a condenser provided under a bottom surface of the cabinet; a ventilating passage communicating the component chamber with a bottom of the cabinet and outside of the dust guard for discharging heat generated from the condenser and the compressor to outside; and a cooling fan provided in the component chamber for cooling the compressor and the condenser.

Abstract: An air conditioner cover adapted to cover an entire outdoor air conditioner unit. The cover is made from a perforated neoprene material and is comprised of a horizontal top panel joined to an attachment skirt extending perpendicularly downward therefrom and an extended skirt protruding downwardly from the attachment skirt covering the remainder of the air conditioner unit.

Abstract: An air conditioning (A/C) system includes a condenser and an electric motor that drives a fan to induce air flow through the condenser. The electric motor includes an internal stator assembly and an external rotor assembly rotatable about the internal stator assembly. A housing is attached to the external rotor assembly. The fan is connected to the housing.

Abstract: Disclosed is a built-in refrigerator provided in a sink and effectively discharging heat from a condenser and a compressor. The built-in refrigerator includes a cabinet provided in the sink and a component chamber at a rear bottom thereof and a dust guard provided at a front bottom of the cabinet; a compressor provided in the component chamber; a condenser provided under a bottom surface of the cabinet; a ventilating passage communicating the component chamber with a bottom of the cabinet and outside of the dust guard for discharging heat generated from the condenser and the compressor to outside; and a cooling fan provided in the component chamber for cooling the compressor and the condenser.

Abstract: A pipe structure of an air conditioner, wherein the pipes inside the machinery room are concentrated on one side of the compressor to form long up-down direction so that the pipes inside the machinery room of the air conditioner may be formed in a compact manner, is provided.

Abstract: A machine for improving air conditioning condenser with multiply capacities with a dual compressor, a dual coil free of fins, and a bottom free of plate.

Abstract: Disclosed is a built-in refrigerator provided in a sink and effectively discharging heat from a condenser and a compressor. The built-in refrigerator includes a cabinet provided in the sink and a component chamber at a rear bottom thereof and a dust guard provided at a front bottom of the cabinet; a compressor provided in the component chamber; a condenser provided under a bottom surface of the cabinet; a ventilating passage communicating the component chamber with a bottom of the cabinet and outside of the dust guard for discharging heat generated from the condenser and the compressor to outside; and a cooling fan provided in the component chamber for cooling the compressor and the condenser.

Abstract: A refrigerated cold beverage merchandiser (10) includes an enclosure defining an insulated, refrigerated display cabinet (25) and a compartment (30) heat insulated therefrom wherein a compressor (40) a condenser (50) and a condenser fan (60) are disposed. The condenser (50) is formed by a plurality of in-line tube banks (52). Each tube bank (52) is a serpentine tube formed a plurality of unfinned, straight tube segments (54) extending in parallel rows (55) between a pair of spaced, opposed end plates (58) and elbow turns (56) connecting neighboring straight tube segments (56) in a conventional manner. Each successive tube bank (52) is arranged with the other tube banks so that respective parallel tube rows (55) are disposed in-line from the front to the rear of the condenser (50) or with each successive tube bank being offset in a slightly staggered arrangement.

Abstract: A system for protecting air-conditioning units from damage caused by hail and other inclement weather conditions is described. The system includes one or more protective panels, each having a frame and a protective screen. The panels are attached to the housing of an air-conditioning unit using a variety of brackets and clamps. The system protects air-conditioning units without significantly restricting the air flow around the units and additionally shades the units to enhance their performance by lowering their temperature.

Abstract: A refrigerated cold beverage merchandiser (10) includes an enclosure defining an insulated, refrigerated display cabinet (25) and a compartment (30) heat insulated therefrom wherein a compressor (40) a condenser (50) and a condenser fan (60) are disposed. The condenser (50) is formed by a plurality of in-line tube banks (52). Each tube bank (52) is a serpentine tube formed a plurality of unfinned, straight tube segments (54) extending in parallel rows (55) between a pair of spaced, opposed end plates (58) and elbow turns (56) connecting neighboring straight tube segments (56) in a conventional manner. Each successive tube bank (52) is arranged with the other tube banks so that respective parallel tube rows (55) are disposed in-line from the front to the rear of the condenser (50) or with each successive tube bank being offset in a slightly staggered arrangement.

Abstract: A refrigerator including a control unit for a condenser fan in connection with operation of a compressor if an outdoor temperature sensor is out of order. Since the condenser fan is driven in connection with the operation of the compressor, a trip phenomenon of the compressor generated due an overload of the compressor can be prevented, which results in stable operation of the refrigerator as well as increased reliability of the refrigerator.

Abstract: The subject invention pertains to a method and apparatus for cooling. In a specific embodiment, the subject invention relates to a lightweight, compact, reliable, and efficient cooling system. The subject system can provide heat stress relief to individuals operating under, for example, hazardous conditions, or in elevated temperatures, while wearing protective clothing. The subject invention also relates to a condenser for transferring heat from a refrigerant to an external fluid in thermal contact with the condenser. The subject condenser can have a heat transfer surface and can be designed for an external fluid, such as air, to flow across the heat transfer surface and allow the transfer of heat from heat transfer surface to the external fluid. In a specific embodiment, the flow of the external fluid is parallel to the heat transfer surface.

Abstract: A condenser assembly for a vehicle air conditioning system is provided. The condenser assembly includes a core including first and second ends and a plurality of tubes extending therebetween, a first header located adjacent to the first end of the core, and a second header located adjacent to the second end of the core. The second header includes a receiver/dryer having a receiver/dryer chamber, a manifold cooperating with the receiver/dryer to define a manifold chamber, and a mounting rib unitarily formed with at least one of the receiver/dryer and the manifold. The mounting rib includes a first portion extending away from the at least one of the receiver/dryer and the manifold in a first direction and a second portion extending away from the first portion in a second direction that is substantially nonparallel with the first direction.

Abstract: The present invention relates to a condenser for radiating heat of a high temperature and high pressure refrigerant discharged from a compressor to room temperature air and cooling water to condense and liquefy the refrigerant, and more particularly, to a condenser provided with a condensing tube and a cooling plate for helping heat radiation of the condensing tube, the condensing tube and the cooling plate being provided in various structures, thereby improving a condensation efficiency. The condenser includes: a condensing tube 10 including a refrigerant inlet 12 formed at one end thereof, a refrigerant outlet 14 formed at the other end thereof, and a passage pipe 16 having a heat radiation protrusion formed on an outer circumference thereof; and a cooling plate having a groove 22 on which the condensing tube is mounted so as to prevent a separation of the condensing tube, and a plurality of bent pieces 24 formed protruding from left and right sides of the groove 22.

Abstract: A condenser coil for a refrigerated beverage and food service merchandiser includes a plurality of parallel fins between adjacent tubes. In order to reduce the likelihood of fouling by the bridging of fibers therebetween, the spacing of the fins is maintained at a distance of 0.4 to 0.8 inches apart. In one embodiment, the tubes comprise microchannel tubes, with no fins therebetween, and the spacing between the microchannel tubes is maintained in the range of 0.75 inches to optimize the heat transfer performance while minimizing the occurrence of fouling. A supporting structure is provided between microchannel tubes when no fins are included. Also, plural rows of microchannel tubes are provided with separate inlet headings and with the rows being staggered in transverse relationship to enhance the heat transfer characteristic while minimizing the likelihood of fouling.

Abstract: A module is provided for attachment to the roof of a bus and includes all of the necessary components for conditioning the return air from the passenger compartment and delivering conditioned air thereto. Each module may include an evaporator section, a condenser section and a power section including a compressor and an inverter. The condenser section includes a condenser coil and a transverse fan with its axes disposed horizontally so as to draw air through a fresh air intake opening, through the coil and out a condenser discharge opening. The drain pan is shaped so as to form an air guiding wall around the fan, and a vortex wall is attached to the condenser coil support structure to separate low and high pressure sides of the fan. A rear wall and the fins of a discharge grill are angled with respect to the vertical plane so as to thereby prevent a recirculation of hot discharged air back into the air intake opening.