Abstract: This invention makes it possible to charge a refrigeration apparatus with the amount of refrigerant that the refrigeration apparatus requires at the time of onsite installation. As a result, the optimum refrigerant charging amount can always be obtained. The refrigeration apparatus is provided with a refrigeration cycle (A) in which an outdoor unit (X) equipped with a compressor (1), a condenser (2), and a receiver (3) and an indoor unit (Y) equipped with an expansion valve (4) and an evaporator (5) are connected together by a liquid pipe (8) and a gas pipe (9). The refrigeration cycle (A) is charged with refrigerant while a refrigerant charging operation state is created in which the liquid pipe (8) connecting the outdoor unit (X) to the indoor unit (Y) is filled with liquid refrigerant having a prescribed density.

Abstract: A bridge circuit (11) having four check valves (31, 32, 33, 34) is provided upstream of a receiver (10), which is provided upstream of an expansion valve (7). A gas vent pipe (12) for connecting the receiver (10) and a pipe (24) downstream of the expansion valve (7) to each other is provided, and the gas vent pipe (12) is provided with a gas vent valve (13). Upon shut down, the gas vent valve (13) is opened, and the expansion valve (7) is gradually closed. The compressor (4) is shut down and the gas vent valve (13) is closed after passage of a predetermined time from the point in time when the expansion valve (7) reaches the fully closed state.

Abstract: A multi-function receiver attenuates pressure fluctuations of refrigerant flowing from an evaporator to a compressor in an air conditioning system. The receiver includes a body housing having an inlet for receiving the refrigerant from a condenser and an outlet for sending the refrigerant to the compressor. A cap housing covers the body housing. The receiver also includes first and second ports defined within the cap housing. The first port communicates with the evaporator for sending the refrigerant to the evaporator, and the second port communicates with the evaporator for receiving the refrigerant from the evaporator. An internal wall defines an outer and an inner cavity. The outer cavity communicates with the inlet for receiving the refrigerant from the condenser and with the first port for sending the refrigerant to the evaporator. The inner cavity communicates with the second port to receive the refrigerant from the evaporator and to attenuate the pressure fluctuations.

Abstract: A concentric tubing apparatus prevents heat gain in an air conditioning system. The heat gain results from heat generated in an engine compartment of a vehicle. To accomplish this, the tubing apparatus includes a first and second refrigerant tubes. The first refrigerant tube is in fluid communication with a receiver and an evaporator of the air conditioning system to accommodate the flow of the refrigerant from the receiver to the evaporator, and the second refrigerant tube is in fluid communication with the receiver and the evaporator to accommodate the flow of the refrigerant from the evaporator to the receiver. The second refrigerant tube is disposed concentrically about the first refrigerant tube such that the second refrigerant tube insulates the refrigerant flowing in the first refrigerant tube from the heat generated in the engine compartment. Thus, heat gain in the refrigerant flowing in the first refrigerant tube to the evaporator is prevented.

Abstract: Accumulator (10, 100) for an air-conditioning system. The inlet (58) fluid separation can be controlled, and there is control of the amount of compressor oil in circulation through an adjustable coupling between the interior and the outlet passage (56). Desiccating material (48) can be accommodated in many orientations, and can be made of various materials. The accumulator (10, 100) embodies an outer housing (12, 14) of two or more pieces and an inner liner (16) that is of one or more pieces. The inlet (58) directs the refrigerant into the inner volume formed by the liner (16), wherein the liquid refrigerant and compressor oil are contained and insulated from the wall (12, 14) of the outer housing.

Abstract: A refrigeration system with a high percentage of fresh air. The system comprises a supply air duct; an indoor heat exchange coil operably positioned in the supply air duct; a reheat heat exchange coil operably positioned in the supply air duct; an outdoor heat exchange coil; at least one compressor; and an expansion device. The system also comprises refrigeration system tubing connected to and serially arranging the compressor, the outdoor heat exchange coil, the expansion device and the indoor coil into a refrigeration circuit; and reheat tubing connecting the reheat coil to the refrigeration tubing so as to arrange the reheat coil in a parallel circuited arrangement with the outdoor heat exchange coil and in a series circuited arrangement with the compressor, the expansion device and the indoor heat exchange coil.

Abstract: A receiver-tank for use in a refrigeration cycle of this invention is provided with a filtering layer 435 formed so that an upper space 402 is formed above the filtering layer 435 in a tank main body 401. An upper end of a refrigerant outlet 441 in a tank bottom wall 421 is opened toward the upper space 402. The refrigerant flowed into the tank main body 401 from the refrigerant inlet 431 passes through the filtering layer 435 upwardly, and forms liquid-stagnation R in the upper space 402. The liquefied refrigerant of liquid-stagnation R flows out of the refrigerant outlet 441. Thereby, only the stable liquefied refrigerant can be extracted more assuredly.

Abstract: A refrigerant flow processor has a vessel with an inlet for receiving recirculating refrigerant from a motor driven compressor and a condenser and having an outlet for returning the refrigerant to an evaporator through an expansion valve. The vessel is configured to establish a vortexing motion of liquefied refrigerant as it travels from the inlet to the outlet. A helical flow guiding component at the vessel outlet causes a highly turbulent flow within the conduit which connects the outlet to the expansion valve. The flow processor reduces energy consumption and operating cost by reducing the load on the motor driven compressor.

Abstract: A refrigeration system has a compressor which incorporates fluid injection into one or more of the fluid pockets. A source of fluid for injection into the pockets is attached directly to the shell of the compressor to eliminate the need for having fluid piping between the source of fluid and the compressor. The source of fluid can be a flash tank which increases the capacity and efficiency of the system or the source of fluid can be a heat exchanger which also increases the capability and efficiency of the system.

Abstract: An elongated adsorbent unit for use in combination with an elongated refrigerant-containing housing includes a housing having first and second ends, and an interior and an exterior. Adsorbent is compacted in the interior of the housing. First and second porous end members are secured to the first and second ends of the housing, respectively. One or more fluid communication channels extend along the exterior of the housing between the first and second ends of the housing.

Abstract: The invention relates to a receiver-drier for use in an air conditioning system. This receiver-drier has (a) a lower portion defining a lower chamber in the receiver-drier; (b) an upper portion defining an upper chamber in the receiver-drier; and (c) a strainer for removing foreign particles from the refrigerant. The lower portion has an inlet for allowing the refrigerant to flow into the lower chamber and an outlet for allowing the refrigerant to flow out of the lower chamber. Each of the inlet and the outlet is formed at a bottom of the lower portion. The upper chamber is on top of the lower chamber and is charged with a desiccant for removing moisture from the refrigerant. The strainer is disposed at a position in a flow of the refrigerant from the inlet to the outlet.

Abstract: Disclosed is a refrigeration cycle and a method for determining a capacity of a receiver of a refrigeration cycle. According to the present invention, the capacity of the receiver can be determined according to the variations of the paths of the condenser, which provides an ability of fully coping with the variations of the cooling load. When the method for determining the capacity of the receiver according to the present invention is applied in the condenser integrated with the receiver, it is possible that an optimal capacity where no brazing failure occurs is obtained, which means the optimal capacity for the receiver can be easily determined.

Abstract: A condenser is provided that makes a liquid droplet of a liquid phase medium drop effectively, the liquid phase medium residing in a lower end opening of a medium passage of the condenser, thereby preventing any degradation in the performance of the condenser. In the condenser, vapor, which is supplied to a cooling pipe (14) connected to cooling fins (16), is cooled, condensed into water, and recovered in a water-collecting tray (21) provided beneath the cooling pipe (14), and a needle-shaped member (24) provided so as to face the lower end opening of the cooling pipe (14) ruptures the droplet that, due to surface tension, resides in the lower end opening of the cooling pipe (14) and makes it drop into the water-collecting tray (21).

Abstract: An accumulator having an improved baffle connection and a related method of interlocking an outlet tube and baffle within annular grooves of a passage of an enclosure to prevent blow by of liquid refrigerant fluid past the baffle connection. The baffle includes a cylindrical extension having a mounting passage through which an outlet tube extends. The cylindrical extension and outlet tube extend into the passage of the enclosure and are engaged within one or more of the annular grooves of the enclosure to interlock the baffle and outlet tube to the enclosure. The enclosure preferably includes a puck having the passage therethrough, where the puck is inserted into a canister and then welded thereto.

Abstract: A vertically oriented refrigerant valve in a refrigeration cycle for substantially reducing vapor bubbles mass in a liquid refrigerant flow and providing a flow modulating and shutoff function. The valve includes an outer shell having a horizontal fluid inlet perpendicular to a vertical axis passing through an inner tubular member positioned inside the outer shell and having a vertical fluid outlet at a distal end, and a condensation chamber formed between the inside surface of the outer shell and the outer surface of the inner tubular member for collecting and condensing rising vapor bubbles from the inlet refrigerant. While the vapor bubbles portion of the refrigerant is collected in the chamber, the liquid passes through a plurality of passageways through the lower portion of the inner tubular member. A slide tube selectively closes and opens one or more of the passageways to control refrigerant flow through the passageways to precisely match the instantaneous needs of the refrigeration system.

Abstract: A universal accumulator device for an auto air conditioning system includes a housing having an inlet opening, one or more outlet openings, one or more inlet fittings selectively engaged with the inlet opening of the housing, and one or more outlet fittings selectively engaged with the outlet opening of the housing. The inlet and outlet fittings may include a metric or a British thread for coupling to the metric or British pipings or lock nuts. A tubing may be selectively secured to the fittings with one or more sealing rings and with an additional barrel.

Abstract: The invention relates to a heat exchanger, in particular a refrigerant condenser, especially for a motor vehicle air-conditioning unit. The heat exchanger is comprised of a block of tubes and fins and of collecting tubes which are arranged on both sides and receive the ends of the tubes, and of a collector which is arranged parallel to a collecting tube. A method for manufacturing the heat exchanger is also disclosed.

Abstract: An automobile climate control system having a liquid dispersing device to allow coolant to flow. The system also utilizes a heat exchanger to cool the liquid. A manifold block handles the transfer of coolant between the coolant dispersing device and the heat exchanger. The manifold block is in communication with the heat exchanger and the coolant dispersing device; and at least one clasp connects the manifold block to the heat exchanger. A fitting clasp made from the clad material couples the heat exchanger to the at least one clasp.

Abstract: An accumulator having an improved baffle connection and a related method of interlocking an outlet tube and baffle within annular grooves of a passage of an enclosure to prevent blow by of liquid refrigerant fluid past the baffle connection. The baffle includes a cylindrical extension having a mounting passage through which an outlet tube extends. The cylindrical extension and outlet tube extend into the passage of the enclosure and are engaged within one or more of the annular grooves of the enclosure to interlock the baffle and outlet tube to the enclosure. The enclosure preferably includes a puck having the passage therethrough, where the puck is inserted into a canister and then welded thereto.

Abstract: The present invention divides the traditional full-loop heat pump compression (heating) and expansion (refrigeration) process into two separate half-loop processes. The two (half-loop) processes occur separately and are separated by physical distance and/or by time. The two processes are connected by either physical storage means and/or by pipeline means such that low pressure refrigerant and high pressure refrigerant are stored between cycles and/or transported between cycles. In operation, a refrigerant is compressed to provide heat to a location, the compressed refrigerant is then stored/transported to where/when a cooling process is needed whereupon the refrigerant is expanded to provide refrigeration, the expanded refrigerant is then stored/transported to where/when a heating process is needed.

Abstract: An ice cream machine for cooling liquid ice cream into frozen ice cream includes an evaporator having a cylindrical cooling tank and an auxiliary tank. The auxiliary tank ensures that the cylindrical cooling tank is flooded with liquid refrigerant during normal operation. The flooding of the cylindrical cooling tank provides more efficient and even cooling in an interior cooling chamber. The more efficient cooling allows the ice cream machine to utilize a smaller compressor, thereby reducing the cost and energy consumption of the ice cream machine. The auxiliary tank can be a coil of tubing or a cylindrical container positioned above the cylindrical cooling tank.

Abstract: A high pressure gas cooler for a motor-vehicle air-conditioning system, the refrigerant circuit having, in the flow direction of the refrigerant, a compressor, the gas cooler, an inner heat exchanger exchanging heat between the high-pressure and low-pressure sides, a throttle device, an evaporator and a manifold on the low-pressure side, which communicates via the low-pressure side of the inner heat exchanger with the intake side of the compressor. The gas cooler is combined with the inner heat exchanger and/or the manifold on the low-pressure side to form a single unit.

Abstract: A refrigerant cycle system includes a condenser having a condensation portion for condensing refrigerant discharged from a compressor, and a receiver for separating refrigerant from the condensation portion into gas refrigerant and liquid refrigerant, and for storing the liquid refrigerant. In this system, refrigerant from the condensation portion flows into the receiver through a first communication hole, and liquid refrigerant in the receiver is discharged through a second communication hole in which a pressure loss is generated. Further, gas refrigerant at an upper side in the receiver is discharged to a downstream side of the second communication hole through a gas bypass pipe.

Abstract: In a vehicle air conditioner, a temperature sensor is disposed on a tank of an evaporator to contact the tank. In addition, the temperature sensor is disposed at a tank position separated from a refrigerant inlet and a refrigerant outlet. Accordingly, a downstream space of the evaporator can be effectively used, and the size of the air conditioner can be reduced while the temperature of the evaporator can be accurately detected using the temperature sensor.

Abstract: In a refrigerant cycle system, a low-pressure side gas-liquid separator is disposed between a refrigerant outlet side of an evaporator and a refrigerant suction side of a compressor so that gas refrigerant is sucked into the compressor, and a throttle passage through which liquid refrigerant is introduced into the compressor is disposed in the low-pressure side gas-liquid separator. Further, in a condenser for condensing gas refrigerant discharged from the compressor in a cooling mode, both first and second heat-exchanging units are provided in this order in a refrigerant flow direction, and a high-pressure side gas-liquid separator is disposed between the first and second heat-exchanging units.

Abstract: In order to magnify capacity control of a refrigeration cycle for an increased efficiency and achievement of compactness, the refrigeration cycle includes a compressor, a four-way valve, a heat exchanger on a side of a heat source, a liquid receiver, a heat exchanger on a side of use, and an electronic expansion valve, all of which are connected other by pipes, and comprises a refrigerant circulating in the refrigeration cycle and being a non-azeotropic refrigerant, a second liquid receiver for taking out a refrigerant vapor from an upper portion of the liquid receiver to condense and store the refrigerant, and a pipe connecting the second liquid receiver to the liquid receiver via a shut-off valve.

Abstract: The present invention relates to a refrigerant condenser for motor vehicle air-conditioning systems of the type that include a tube/fin block, header tubes arranged on both sides of the tube/fin block and a collector arranged parallel to one header tube, wherein the header tubes have partitions for creating a multi-pass flow of the refrigerant, and the tube/fin block has an upper condensation region and a lower supercooling region. The collector is flow-connected via passage orifices to the condensation region, on the one hand, and to the supercooling region, on the other hand. The collector has approximately the same diameter or the same cross section as the adjacent header tube, and an additional container of larger cross section or larger diameter is provided for storing refrigerant and/or for receiving a dryer and/or filter.

Abstract: A plate type condenser used in a cooling system is provided. The plate type condenser includes a casing for defining an upper space into which a gaseous refrigerant flows and is cooled, a lower space for accommodating a liquid refrigerant into which the gaseous refrigerant is condensed, and a connecting portion through which the upper and lower spaces communicate with each other. The casing substantially has a plate shape. A refrigerant inlet is installed at an upper portion of the casing to communicate with the upper space. A refrigerant outlet is installed at a lower portion of the casing to communicate with the lower space. A first adiabatic slit for separating the walls of the casing is formed between the upper space and the lower space except at the connecting portion.

Abstract: A receiver-tank is provided with a vertical tank main body 140. An inlet 131 and an outlet 132 are provided in an inlet-and-outlet forming member 150 as a bottom wall of the tank main body 140. A desiccant-filled-layer 135 as a flow-resistance layer is provided in a lower part of the tank main body 140, and an upper space is formed above the desiccant-filled-layer 135. A suction pipe 133 is provided in the tank main body 140 with the lower end connected with the outlet 132 and the upper end opened toward the upper space. When the refrigerant introduced into the tank main body 140 from the inlet port 131 goes up through the desiccant-filled-layer 135, the flow velocity decreases, and liquid-stagnation R is quietly created bin the upper space. The liquefied refrigerant of this liquid-stagnation R flows out of the outlet 132 through the suction pipe 133. Thereby, the stable liquid refrigerant can be supplied.

Abstract: The refrigerant cycle apparatus comprises a communication pipe 32 which is an upper refrigerant flow-in means allowing the refrigerant which has passed through a condenser 2 to flow into the upper part of a liquid receiver 31, and a communication hole 33 which is a lower refrigerant flow-in means allowing the refrigerant which has passed through the condenser 2 to flow into the lower part of the liquid receiver 31, and the flow rate (Gr1) of refrigerant flowing into the upper part of the liquid receiver 31 from the communication pipe 32 is set at a value between 30 kg/h and 110 kg/h. As a result of this, preventing heat damage due to the heat given to the liquid receiver from the outside and securing the good bubble disappearing characteristic of the liquid refrigerant flowing out from the liquid receiver are mutually compatible, and thereby an improved refrigerant filling characteristic may be obtained.

Abstract: In order to magnify capacity control of a refrigeration cycle for an increased efficiency and achievement of compactness, the refrigeration cycle includes a compressor, a four-way valve, a heat exchanger on a side of a heat source, a liquid receiver, a heat exchanger on a side of use, and an electronic expansion valve, all of which are connected other by pipes, and comprises a refrigerant circulating in the refrigeration cycle and being a non-azeotropic refrigerant, a second liquid receiver for taking out a refrigerant vapor from an upper portion of the liquid receiver to condense and store the refrigerant, and a pipe connecting the second liquid receiver to the liquid receiver via a shut-off valve.

Abstract: A subcooling-type condenser includes a refrigerant condensation core and a subcooling core for supercooling refrigerant condensed by the refrigerant condensation core. A header portion corresponding to an entrance portion of the subcooling core is formed as a liquid refrigerant storage portion, and a capacity of the header Vh is set within a range of 100 cc≦Vh≦250 cc. Thus, subcooling-type condenser having a desired re-liquefaction function without using a separately formed liquid tank may be achieved, thereby reducing the condenser's size and cost.

Abstract: In a core portion of the receiver-integrated condenser, a condensing portion is disposed at an upper side of a super-cooling portion. A receiving unit is disposed at one end side of the core portion in a width direction, and refrigerant is U-turned in a refrigerant passage of the super-cooling portion at the other end side of the core portion in the width direction. In addition, a refrigerant outlet of the super-cooling portion is provided at the one end side of the core portion, a connector connected to the refrigerant outlet is disposed at a direct lower side of the refrigerant outlet, and the connector has a bottom surface used as a connecting surface connected with a pipe connector of a refrigerant pipe.

Abstract: An elongated adsorbent unit for use in combination with an elongated refrigerant-containing housing includes a housing having first and second ends, and an interior and an exterior. Adsorbent is compacted in the interior of the housing. First and second porous end members are secured to the first and second ends of the housing, respectively. One or more fluid communication channels extend along the exterior of the housing between the first and second ends of the housing.

Abstract: A passive desuperheater for a vapor compression refrigeration system is disclosed. The passive desuperheater includes a chamber having two inlets and an outlet, the first inlet for introducing superheated gas into the chamber, the second inlet for introducing cool liquid refrigerant into the chamber and the outlet for outputting the desuperheated gas. The flow of cool liquid refrigerant into the chamber is generated by a gravity drop, resulting in the mixing of the liquid refrigerant with the superheated gas, such that desuperheated gas is output at the outlet. In an alternative embodiment, the hot discharge gas is input through the bottom of a shell and tube condenser and then exposed to the cool liquid refrigerant in the condenser. The desuperheater according to the present invention also can be used to remove oil from the hot discharge gas during desuperheating. Desuperheating can also be obtained by passing the superheated gas through a pipe immersed in the cool liquid refrigerant.

Abstract: The improved refrigeration system of the present invention includes an accumulator with a diffuser pipe extending downwardly into the upper end of a vapor refrigerant tank, the diffuser pipe extending from an evaporator and discharging vapor refrigerant therefrom into the tank. The diffuser pipe includes a lower end located within the interior of the tank which is expanded in diameter relative to the upper end, thereby reducing the velocity of fluid flowing through the pipe and entering the accumulator tank. A diffusion plate is mounted in the lower end of the diffuser pipe, to further diffuse fluid flowing therethrough.

Abstract: In order to magnify capacity control of a refrigeration cycle for an increased efficiency and achievement of compactness, the refrigeration cycle includes a compressor, a four-way valve, a heat exchanger on a side of a heat source, a liquid receiver, a heat exchanger on a side of use, and an electronic expansion valve, all of which are connected other by pipes, and comprises a refrigerant circulating in the refrigeration cycle and being a non-azeotropic refrigerant, a second liquid receiver for taking out a refrigerant vapor from an upper portion of the liquid receiver to condense and store the refrigerant, and a pipe connecting the second liquid receiver to the liquid receiver via a shut-off valve.

Abstract: An accumulator for an air-conditioning (refrigeration or heat pump) system is designed to reduce flooding due to greater effective internal volume while at the same time incorporating an internal heat exchanger for better system performance, and providing better evaporation and controlled thermal properties. The accumulator embodies an outer housing that co-axially surrounds an inner liner. The inlet directs the refrigerant into the inner volume formed by the liner, wherein the liquid refrigerant and compressor oil are contained and insulated from the wall of the outer housing. A heat exchanger is arranged in the annular space between the outer housing and the inner liner and circulates a flow of condensate therethrough before delivering it to the expansion device. In this way the condensate is cooled for higher performance and at the same time refrigerant passing out of the accumulator is vaporized more completely.

Abstract: A vessel (50) having a cylindrical wall (52) and an end wall (54). The cylindrical wall (52) includes an edge portion (58), a radially inward shoulder portion (60), and a capture portion (62) therebetween. The end wall (54) is interference-fit in the capture portion (62) with the shoulder portion (60) forming a positive stop therefore and the edge portion (58) being turned radially inward thereover. An inlet/outlet fitting (70) extends through an appropriately-sized opening in the end wall (54) and is secured thereto by, for example, a lip (72) and a weld (74). The vessel (50) can be incorporated into the construction of refrigeration components wherein compressor-generated vibration causes stress concentration concerns for inlet/outlet interfaces on the end wall (54).

Abstract: The present invention divides the traditional fill-loop heat pump compression (heating) and expansion (refrigeration) process into two separate half-loop processes. The two (half-loop) processes occur separately and are separated by physical distance and/or by time. The two processes are connected by either physical storage means and/or by pipeline means such that low pressure refrigerant and high pressure refrigerant are stored between cycles and/or transported between cycles. In operation, a refrigerant is compressed to provide heat to a location, the compressed refrigerant is then stored/transported to where/when a cooling process is needed whereupon the refrigerant is expanded to provide refrigeration, the expanded refrigerant is then stored/transported to where/when a heating process is needed.

Abstract: In an air-conditioning refrigerant receiver having an annular clearance defined between an outer periphery of a lower cover supporting a contained assembly from the below and an inner periphery of a casing, a guide tube extends downwards to define an annular passage connected to the annular clearance between the guide tube and an inner surface of the casing, and is connected at its upper end to an outer periphery of the lower cover. Thus, a refrigerant, which has passed through the annular clearance, can be guided to a lower portion so as to quietly flow down along the inner surface of the casing, and hence, it is possible to inhibit to the utmost the refrigerant from leaving the inner surface of the casing and to become scattered, thereby more reliably preventing the occurrence of bubbling.

Abstract: A receiver-tank is provided with a vertical tank main body 140. An inlet 131 and an outlet 132 are provided in an inlet-and-outlet forming member 150 as a bottom wall of the tank main body 140. A desiccant-filled-layer 135 as a flow-resistance layer is provided in a lower part of the tank main body 140, and an upper space is formed above the desiccant-filled-layer 135. A suction pipe 133 is provided in the tank main body 140 with the lower end connected with the outlet 132 and the upper end opened toward the upper space. When the refrigerant introduced into the tank main body 140 from the inlet port 131 goes up through the desiccant-filled-layer 135, the flow velocity decreases, and liquid-stagnation R is quietly created bin the upper space. The liquefied refrigerant of this liquid-stagnation R flows out of the outlet 132 through the suction pipe 133. Thereby, the stable liquid refrigerant can be supplied.

Abstract: A filter cartridge F in a condenser K for an automobile air-conditioning system comprises a permeable housing 1 containing a desiccant charge, said housing being inserted into a header pipe 8 of said condenser which header pipe is closed by a plug S being part of said filter cartridge F. In a condenser K being equipped with a filter cartridge F in header tube 8 which is closed by a plug S said is made from plastic material or light metal and is part of said filter cartridge F to fulfil a function, namely to seal the header tube and to position the cartridge.

Abstract: In a condenser module M for vehicular air-conditioning system a sub-cooler part positioned below a condenser part is constituted by a sub-cooler tube body R structurally separated from said condenser part K, said tube body extending substantially parallel to and along a lower side 4 of said condenser casing G and containing a dryer equipment as well as at least one collector chamber B for refrigerant.

Abstract: In a refrigerating apparatus using an HFC group refrigerant, the. performance is improved by increasing the refrigerating capacity and a stable operation is made possible. In order to achieve this, a cycle system in a refrigerator is structured so as to connect a compressor, a condenser, a liquid receiver and a supercooler in this order. In an air-cooled separation type refrigerator, the liquid receiver is disposed within an air-cooled type condenser unit. Further, in the case where a flush gas is liable to be generated in a liquid pipe, a vapor-liquid separator is disposed within the compressor unit integral with an accumulator and separated therefrom by a partition plate.

Abstract: The invention relates to a process and a plurality of embodiments of a fluidifier for condensing the interior coolant of an automotive air conditioning system into a saturated state, and for subsequent supercooling of said coolant, whereby the ambient air of the motor vehicle serves in said process as the external coolant. The path of flow of the interior coolant is divided into at least two parallel paths, which are subsequently united again. Upstream of said paths, the interior coolant is partially condensed from the gas phase into the liquid phase, and then condensed further along the first parallel path of flow into the saturated state, whereby the residual gas phase of the interior coolant is separated, whereas along the second parallel path, the interior coolant is supercooled and united again in the supercooled state with the saturated interior coolant of the first parallel path, the latter having been freed of the gas phase.

Abstract: A refrigeration system having a refrigeration cycle which provides optimized consumption, comprising a main section, which is constituted by at least one main compressor, a main condenser, which is connected between the compressor and at least one expansion valve, and at least one evaporator, which is connected to the expansion valve, which comprises an auxiliary section comprising at least one auxiliary compressor which is connected to a low-pressure intake line of the main compressor, at least one auxiliary condenser which is connected to the auxiliary compressor, and a first auxiliary reservoir and a second auxiliary reservoir which are respectively connected to the output of the auxiliary condenser and to the output of the main condenser, for connection to the at least one expansion valve.

Abstract: A condenser of a refrigerant cycle system includes a first heat exchange unit into which refrigerant discharged from a compressor flows, a second heat exchange unit disposed at a downstream of the first heat exchange unit in a refrigerant flow direction, and a gas-liquid separator disposed between the first and second heat exchange units in the refrigerant flow direction. In the refrigerant cycle system, at least gas refrigerant separated in the gas-liquid separator flows into the second heat exchange unit so that an amount of liquid refrigerant stored in the gas-liquid separator is changed in accordance with a super-heating degree of refrigerant discharged from the compressor.

Abstract: The invention is directed to an air conditioning unit having a refrigerating fluid loop comprising a compressor, a condenser, a liquid/gas separating reservoir, an expansion device, an evaporator and a pre-expansion device, inserted between the condenser and the reservoir, which is capable of producing a pressure drop ranging between 1.5 and 14 bars to reduce the fluid pressure down to its vapor saturating pressure. The reservoir can also contain a variable amount of liquid to compensate the fluid losses in the loop by maintaining the sub-cooling temperature constant in the condenser and consequently the heating capacity capable of being absorbed by the evaporator.

Abstract: For use with a heat exchange system having a compressor, condenser, evaporator, refrigerant, and refrigerant carrying lines, an efficiency enhancing apparatus that includes a refrigerant cooling module positioned in the heat exchange system between the compressor and the condenser. The refrigerant cooling module comprises a secondary condenser that draws and cools a portion of the refrigerant from a main refrigerant carrying line exiting the compressor, thereby leaving a remaining portion of non-cooled refrigerant in the main refrigerant carrying line and a refrigerant siphoning and mixing vessel having inlet ports for receiving both the drawn and cooled portion of the refrigerant and the non-cooled portion of the refrigerant and a refrigerant exit port leading from the mixing vessel to the primary condenser for carrying mixed and cooled refrigerant.