Abstract: An electronic expansion valve and an assembly method therefor. The electronic expansion valve includes a screw rod component, a movable connection component, a valve pin component and an elastic element. One end of the elastic element abuts the movable connection component, and the other end thereof abuts the valve pin component. In the period from the valve pin component closing the valve port part to the screw rod component moving a pre-set displacement amount in the valve closing direction, the elastic element does not generate an elastic force pushing the valve pin component towards the valve port part; and in the period from the valve pin component closing the valve port part to in a case that the screw rod component moving more than the pre-set displacement amount in the valve closing direction, the elastic element generates an elastic force pushing the valve pin component towards the valve port part.

Abstract: An evaporator set, preferably for a thermally driven adsorption device. In an evaporator set that can be connected an easily output-scalable modular thermally driven condenser set and, as a result, can be used simultaneously as a heat or cold store, a liquid collector is connected via a blockable expansion valve with an evaporator for cooling a fluid, wherein the liquid collector, the expansion valve and the evaporator form a structural unit, and wherein the liquid collector has a fluid inlet for and the evaporator a fluid outlet to a thermally driven condenser set.

Abstract: An electronic expansion valve is provided, the valve needle component thereof is provided with an axial mounting hole, the screw rod position limiting portion is mounted at the bottom end of the screw rod and extends into the axial mounting hole, and the valve needle position limiting portion is mounted at an open end of the axial mounting hole; and a distance between the bottom end of the screw rod and a bottom wall of the axial mounting hole forms the predetermined buffer distance. When the refrigerant flows reversely, the structural design of the electronic expansion valve may, on one hand, simplify the control procedure, and on the other hand, avoid the problem that a screw rod is stuck because a valve needle component is not removed in time.

Abstract: An expansion valve and an air conditioner for vehicles having the same, the expansion valve comprising a main body having an inflow channel, first and second discharge channels and first and second orifices to expand refrigerant branched from the inflow channel to the first and second discharge channels; first and second valves to control flow rates of refrigerant passing through the first and second orifices by controlling the degree of opening of the first and second orifices respectively; and a shaft slidably mounted inside the main body for varying positions of the first and second valves simultaneously so that the first and second orifices are opened or closed at the same time by the movement of the shaft.

Abstract: An air conditioner includes an outdoor fan and a refrigerant circuit having a compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger connected to each other. An expansion valve refrigerant discharge control, in which the compressor is driven in a state where the outdoor fan is stopped and the expansion valve is open, is performed when a cooling start noise reduction condition that a state of refrigerant at inlet and outlet ports of the expansion valve is in a one-phase liquid state is satisfied when starting the cooling operation. An expansion valve normal switching control, in which an opening of the expansion valve is reduced and an operating frequency of the compressor is increased, is performed after the expansion valve refrigerant discharge control.

Abstract: Disclosed is a heat exchanger of a plate type comprising an evaporator having at least one inlet and at least one outlet allowing a first medium to enter into and exit from the evaporator. The evaporator comprises a plurality of interconnected evaporation chambers disposed in parallel, having at least one common inlet and at least one common outlet allowing the first medium to enter into and exit from the evaporation chambers.

Abstract: An electronic expansion valve is provided that allows an air conditioner to control air conditioning in accordance with a valve opening point of the electronic expansion valve. Also, an air conditioner is provided that is capable of controlling air conditioning on the basis of the valve opening point of the electronic expansion valve. The electronic expansion valve is provided with a barcode corresponding to property data of the electronic expansion valve. The property data include a pulse number corresponding to a valve opening point that was measured in the process of manufacturing the electronic expansion valve. The valve opening point is set on the basis of the pulse number of a stepper motor when the flow rate of a gas flowing through a valve hole of the electronic expansion valve is equal to a set value.

Abstract: An electronic expansion valve includes a valve body, a valve seat, and a stepping motor. A valve portion is formed at a forward end of the valve body. The valve seat forms a variable throttle portion between the valve portion and the valve seat by allowing the valve body to move in an axial direction. The stepping motor moves the valve portion in accordance with a pulse number. At least one part of a side surface of the valve portion is shaped so that an opening degree ratio becomes constant.

Abstract: A drive control device performs a mode change with a constant current between a first mode in which an opening degree of a refrigerant passage is changed in a first flow region where a flow rate of refrigerant flowing through the refrigerant passage is lower than or equal to a predetermined value and a second mode in which the opening degree of the refrigerant passage is changed in a second flow region where the flow rate of refrigerant flowing through the refrigerant passage is higher than the predetermined value. The drive control device increases a value of the constant current at the mode change to be larger than a value of a constant current when the opening degree of the refrigerant passage is changed in the first mode.

Abstract: A heat source-side refrigerant circuit A including a compressor 11, an outdoor heat exchanger 13, a first refrigerant branch portion 21 connected to the compressor 11, a second refrigerant branch portion 22 and a third refrigerant branch portion 23 connected to the outdoor heat exchanger 13, a first refrigerant flow rate control device 24 provided between branch piping 40 and the second refrigerant branch portion 22, intermediate heat exchangers 25n connected at one side thereof to the first refrigerant branch portion 21 and the third refrigerant branch portion 23 via three-way valves 26n and connected at the other side thereof to the second refrigerant branch portion 22, and second refrigerant flow rate control devices 27n provided between the respective intermediate heat exchangers 25n and the second refrigerant branch portion 22, and user-side refrigerant circuits Bn having indoor heat exchangers 31n connected respectively to the intermediate heat exchangers 25n are provided, and at least one of water and

Abstract: In an integration valve, a body, in which a vapor-liquid separating space is provided, includes a fixed throttle decompressing liquid-phase refrigerant, a liquid-phase refrigerant side valve body member opening or closing a liquid-phase refrigerant passage, and a vapor-phase refrigerant side valve body member opening or closing a vapor-phase refrigerant passage. Further, the vapor-phase refrigerant side valve body member is configured by a differential pressure regulating valve operated based on a pressure difference between a refrigerant pressure at a side of the vapor-phase refrigerant passage and a refrigerant pressure at a side of the liquid-phase refrigerant passage. The vapor-phase refrigerant side valve body member is movable when the liquid-phase refrigerant side valve body member is moved by a solenoid. Therefore, a cycle configuration of a heat pump cycle configuring a gas injection cycle can be simplified.

Abstract: Heat pump comprising a number of hollow elements (2) with a first zone (2a), a second zone (2b) and a working medium which can be displaced in a reversible manner between the first and second zones, also comprising a number of plate elements (1) and a number of through-passage regions of a first type (4) arranged between the plate elements (1), further comprising a number of through-passage regions of a second type (5) arranged between the plate elements (1), and additionally comprising at least two distributing devices (7, 8) which are arranged at the ends of the plate elements (1) in each case, are provided for distributing a first fluid through the through-passage regions of the first type (4) and each have a fixed hollow cylinder and a distributor insert (7a, 8a) which can be rotated in the hollow cylinder, the distributor insert (7a, 8a) having partition walls (7b, 8b) which separate off at least four separate chambers (11) in each of the cylinders, and a flow path which comprises at least one through-pa

Abstract: A heat pump including at least two refrigerant injection flow paths into a scroll compressor and a main circuit. The main circuit includes a scroll compressor, a condenser, an expansion valve, a phase separator, and an evaporator for evaporating refrigerant. The scroll compressor is provided with a first refrigerant injection port between an inlet of the scroll compressor and an outlet of the scroll compressor, and a second refrigerant injection port between the inlet and the first refrigerant injection port. A first refrigerant injection flow path is bypassed from the phase separator. An internal heat exchanger is installed between the phase separator and the evaporator. A second refrigerant injection flow path is bypassed between the phase separator and the internal heat exchanger. The second refrigerant injection flow path is passed through the internal heat exchanger.

Abstract: The invention relates to a valve device for a refrigerating machine that circulates a refrigerant, which valve device is provided with at least one condenser and at least one evaporator. The valve device comprises at least one inlet, at which the refrigerant in the condenser can be fed to the valve device, at least three outlets, through which the refrigerant in the valve device can be discharged into the evaporator, and a valve element, which is rotatably arranged about an axis (A) and can be brought into a plurality of positions (S1, S2, S3, S4, S5, S6, S7). In a first position (S1), the first outlet is connected to the inlet in order to convey refrigerant. In a second position (S2), the second outlet is connected to the inlet in order to convey refrigerant. In a third position (S3), the third outlet is connected to the inlet in order to convey refrigerant.

Abstract: A decompression device includes an upstream throttle portion, a middle passage portion and a downstream throttle portion, which are arranged within a body portion. The upstream throttle portion is a variable throttle including an upstream throttle passage in which the refrigerant is decompressed and expanded, and a valve body having an open degree adjusting portion configured to adjust an open degree of the upstream throttle passage. The downstream throttle portion is a fixed throttle for decompressing and expanding refrigerant flowing from the middle passage portion. Furthermore, a refrigerant passage defined from the upstream throttle portion to the downstream throttle portion through the middle passage portion is provided in the body portion, and is bent at least at a bent portion in which the refrigerant flow is bent in the body portion.

Abstract: A method for controlling a refrigerant distribution in a vapour compression system, such as a refrigeration system, e.g. an air condition system, comprising at least two evaporators. The refrigerant distribution determines the distribution of the available amount of refrigerant among the evaporators. While monitoring a superheat, SH, at a common outlet for the evaporators, the distribution of refrigerant is modified in such a manner that a mass flow of refrigerant to a first evaporator is altered in a controlled manner. The impact on the monitored SH is then observed, and this is used for deriving information relating to the behaviour of the first evaporator, in the form of a control parameter. This is repeated for each evaporator, and the refrigerant distribution is adjusted on the basis of the control parameters. The impact may be in the form of a significant change in SH.

Abstract: A motor-operated valve configured to control the flow rate during a normal flow and pass the fluid so as to minimize pressure loss during a reverse flow, and a refrigeration cycle using the same, are provided. It is configured such that during a normal flow, the fluid is made to flow only from between the main valve member and the orifice to perform flow rate control, and during a reverse flow, all or a majority of the fluid is made to flow to a bypass channel without being passed through the orifice to decrease pressure loss as much as possible. A check valve member which closes the bypass channel during a normal flow and opens it during a reverse flow is provided in the valve main body.

Abstract: An exdributor valve of a heat exchanger includes a distributor formed to define an interior and configured to distribute single phase liquid refrigerant from the interior then change to a two-phase refrigerant to cooling channels of the heat exchanger and a flow modulation device. The flow modulation device is operably interposed between the interior of the distributor and the cooling channels and is configured to modulate an area through which the single phase liquid refrigerant is permitted to flow from the interior of the distributor then change to a two-phase refrigerant to equally distribute to each of the cooling channels.

Abstract: An expansion valve according to an embodiment includes a mounting hole: that has its central axis at a height position between a first refrigerant passage and a second refrigerant passage in the body thereof; that is provided so as to penetrate a first side surface and a second side surface; and that is used for inserting, from the side of the second side surface, a bolt for fastening a mounting member on an evaporator side and the body. The mounting hole has, in an inside thereof, a stopper surface for stopping the head of the bolt in an insertion direction, and the stopper surface is formed so as to be located near to the first side surface relative to a central axis of a shaft.

Abstract: The present invention teaches a method and device for cooling the pool water efficiently and effectively during the warm days for a comfortable use of a pool. A mechanically detachable pool water cooling device is configured to an existing circulation or filtration infrastructure in the pool. The water cooling device includes a uniquely designed water splashing and mist generating nozzle, mechanisms to increase or decrease the height of the device, and a manual or remote control for run and stop operation for the device. Configuring the pool water cooling device to an existing circulation or filtration infrastructure eliminates the need for any additional source of energy to operate the water cooling device. The utility of the present invention extends to numerous residential, and commercial applications.

Abstract: Method and apparatus for refrigerant flow control are disclosed. One exemplary method relates to a method of controlling a flow of a refrigerant in an appliance comprising a refrigerant flow controller and a refrigerant flow valve, wherein the refrigerant flow controller is configured to direct the refrigerant flow valve to one of a substantially fully opened position and a substantially fully closed position. The method comprises directing the refrigerant flow valve, via the refrigerant flow controller, to at least one transition position between the substantially fully opened position and the substantially fully closed position, and operating the appliance with the refrigerant flow valve at the at least one transition position.

Abstract: A system (200; 250; 270) has a compressor (22), a heat rejection heat exchanger (30), first (38) and second (202) ejectors, first (64) and second (220) heat absorption heat exchangers, and a separator. The ejectors each have a primary inlet (40, 204) coupled to the heat rejection exchanger to receive refrigerant. A second heat absorption heat exchanger (220) is coupled to the outlet of the second ejector to receive refrigerant. The separator (48) has an inlet (50) coupled to the outlet of the first ejector to receive refrigerant from the first ejector. The separator has a gas outlet (54) coupled to the secondary inlet (206) of the second ejector to deliver refrigerant to the second ejector. The separator has a liquid outlet (52) coupled to the secondary inlet (42) of the first ejector via the first heat absorption heat exchanger to deliver refrigerant to the first ejector.

Abstract: An expansion device unit (4) for a vapour compression system (1), and a vapour compression system (1) are disclosed. The expansion device unit (4) comprises an inlet opening (17) arranged to receive fluid medium, at least two outlet openings (18) arranged to deliver fluid medium, a main expanding section (6) adapted to expand fluid medium received via the inlet opening (17) before delivering the fluid medium to the outlet openings (18), and a distribution section (7) arranged to split the fluid flow received via the inlet opening (17) into at least two fluid flows to be delivered via the outlet openings (18). The main expanding section (6) and/or the distribution section (7) is/are arranged to cause pressures in fluid delivered via at least two of the outlet openings (18) to be distinct. The main expanding section (6) is operated on the basis of one or more parameters measured in the fluid flow delivered by one of the outlet openings (18).

Abstract: An electronically controlled stepper motor valve utilizes an electric feed through assembly providing electrical connection between the stepper motor and a mating cable connector; wherein the electric feed through assembly includes four individual leads that are sequenced to allow the mating cable connector to be installed in any of four positions, each 90 degrees apart. The ability to use a 90 degree elbow style cable connector allows the EEV footprint to be minimized which provides an advantage when the electric expansion valve is installed in the tight confines of a package system.

Abstract: Method and apparatus for refrigerant flow control are disclosed. One exemplary method relates to a method of controlling a flow of a refrigerant in an appliance comprising a refrigerant flow controller and a refrigerant flow valve, wherein the refrigerant flow controller is configured to direct the refrigerant flow valve to one of a substantially fully opened position and a substantially fully closed position. The method comprises directing the refrigerant flow valve, via the refrigerant flow controller, to at least one transition position between the substantially fully opened position and the substantially fully closed position, and operating the appliance with the refrigerant flow valve at the at least one transition position.

Abstract: An inlet header (22) of a microchannel heat pump heat exchanger has a tube (34) disposed therein and extending substantially the length of the inlet header (22), with the tube (34) having a plurality of openings (36) therein. During cooling mode operation, refrigerant is caused to flow into an open end of the tube (34) and along its length to thereby flow from the plurality of openings (36) into the inlet header (22) prior to entering the microchannels (24) to thereby provide a uniform flow of two-phase refrigerant thereto. A bi-flow expansion device (41) placed at the inlet end of the tube (34) allows for the expansion of liquid refrigerant into the tube (34) during periods in which the heat exchanger operates as an evaporator and allows the refrigerant to flow directly from the header (22) and around the tube (34) during periods in which the heat exchanger operates as a condenser coil.

Abstract: As discussed herein, a first aspect of the present invention provides a high-efficiency heat pump that includes a frame, as well as a first circuit, a first compressor, a condenser heat exchanger, a first electronic expansion valve, an evaporator heat exchanger, and a controller. The first circuit, the first compressor, the condenser heat exchanger, the first electronic expansion valve, and the evaporator heat exchanger can be supported by the frame. The first compressor, the condenser heat exchanger, the first electronic expansion valve, and the evaporator heat exchanger can be connected to the first circuit. The controller can be in electronic communication with the first electronic expansion valve, and the controller can be configured to control operation of the first electronic expansion valve and/or the second electronic expansion valve.

Abstract: The invention relates to a refrigeration system comprising a refrigerant circuit provided with a plurality of evaporator paths and a distributor (5) for distributing refrigerants to the evaporator paths, said distributor comprising a controllable valve (14) for each evaporator path. The aim of the invention is to enable the refrigeration system to be operated as desired using simple means. To this end, the distributor (5) comprises a housing (11) and a rotor which is rotatably mounted in the housing (11) and comprises at least one radially oriented projection (15) on the circumference thereof, which interacts respectively with a valve element of a valve.

Abstract: A multiport expansion device for vapor compression refrigeration systems is provided having improved reliability by preventing orifice fouling by virtue of its mechanical design. Furthermore, multiple arrays of ports of two or more similar or differently sized port holes is contemplated which allows further reliability based on redundant orifices and pin combinations.

Abstract: The invention relates to a process and apparatus to cool harvest grapes, the grapes being transported from a harvest reception vessel (1) to a press (5) or to a maceration vessel (23), characterized in that the grapes are charged with carbon dioxide during transport to the press (5) and/or during transport to the maceration vessel (23). As a result a flavor improvement of the wine is achieved.

Abstract: A method is provided for operating a refrigerant vapor compression system at substantially zero cooling capacity to facilitate tight temperature control within a climate-controlled environment associated with the refrigerant vapor compression system. The method includes the step of diverting substantially all refrigerant flow from the primary refrigerant flow circuit of the refrigerant vapor compression system at a first location downstream, with respect to refrigerant flow, of the heat rejection heat exchanger and upstream, with respect to refrigerant flow, of the evaporator refrigerant expansion device to reenter the primary refrigerant flow circuit at a second location downstream, with respect to refrigerant flow, of the evaporator and upstream, with respect to refrigerant flow, of the compression device.

Abstract: The present invention discloses a heat exchanging apparatus including a plate type heat exchanger auxiliary vessel arrangement whereby the auxiliary vessel contains fluid in more than one phase to enable the corresponding plate type heat exchanger to be flooded with heat exchanger fluid in order to fully employ its heat exchange surfaces in the task of exchanging heat.

Abstract: A refrigerant circuit (20) includes, in order to perform a vapor compression supercritical refrigeration cycle, a compression mechanism (30), an outdoor heat exchanger (21), an expansion mechanism (40), and an indoor heat exchanger (23). The expansion mechanism (40) includes, for the two-stage expansion of refrigerant in the refrigerant circuit (20), a first throttle mechanism (41) variable in the amount of throttling and a second throttle mechanism (42) variable in the amount of throttling. In the cooling operation mode, there is derived a target value for the pressure of high pressure refrigerant in the refrigerant circuit (20), from the temperature of refrigerant at the outlet of the outdoor heat exchanger (21) and the temperature of air at the inlet of the outdoor heat exchanger (21).

Abstract: A self-cooling packaging comprises a cavity forming a heat exchanger (20) and containing a refrigerant liquid and the vapour thereof and a cavity forming an adsorption chamber (30) for pumping of said vapour. The packaging also includes connection means (40) provided in a common wall (25) of said cavities (20, 30), said connection means comprising a check valve (42), and actuating means (45) disposed on the side of the adsorption chamber cavity (30) and adapted to open the check valve (42) to an initial position inside the heat exchanger cavity (20). The packaging further comprise spring means (43), the check valve (42) being adapted to progressively reach a fully open position under the action of said spring means (43). The invention makes it possible to realise a progressive opening of the check valve inside the heat exchanger cavity.

Abstract: A refrigerator having a valve to distribute a refrigerant to a plurality of storage compartments. The valve includes a step motor, a valve plate having at least one inlet and a plurality of outlets, and an opening/closing member rotatably coupled to the valve plate to open or close the plurality of outlets in accordance with a rotating motion thereof. In particular, the opening/closing member has one or more recesses, which are indented from the circumference of the opening/closing member by a predetermined distance, to always open only one of the plurality of outlets. With the above-described configuration, the refrigerator can reduce material costs, and can achieve not only simplified valve control, but also accurate control in temperatures of the plurality of storage compartments.

Abstract: A circuit for the generation of cold or heat comprising a compressor, an evaporator, a condenser and a restriction member made as a separate component and having a fixed throughflow cross-section, with the restriction member being inserted directly between two elements of the circuit such as a connection tube and a connection stub to reduce the manufacturing costs and the required construction space.

Abstract: An expansion-distribution assembly (30) for the heat-absorbing component in a heatpump system. The assembly (30) comprises an envelope (32) forming an expansion chamber (54) and a distribution chamber (56). A shuttle (80) within the distribution chamber (56) is movable between a first position in response to fluid flowing in the forward direction and a second position in response to fluid flowing in the reverse direction. The shuttle (80) restricts flow when fluid is flowing in the first direction but is less restrictive when fluid is flowing in the second direction.

Abstract: In a refrigerating cycle incorporating a second flow controller having a throttle section, which is composed of an inlet noise eliminating space, an inlet side porous permeable member communicating in a refrigerant flow direction, an orifice, an outlet side foamed metal, and an outlet noise eliminating space, and a multi-directional valve, a gas/liquid two-phase refrigerant is caused to pass through the throttle section.

Abstract: A passage switching valve for maintaining a plurality of outlet ports to be opened and for uniformly distributing a fluid to the outlet ports and a refrigerator employing the same are disclosed. The passage switching valve includes a housing having an inlet port and a plurality of outlet ports, an opening and closing member for opening and closing the outlet ports, and a driving device for operating the opening and closing member. The outlet ports are provided in a lower position than the inlet port. A collecting portion is formed by providing a recess in the bottom portion of the housing such that a fluid can be collected and the outlet ports are formed in the collecting portion.

Abstract: A distributor, for use in a refrigerant system for conveying refrigerant between an expansion device and an evaporator, having a longitudinal body, an actuator, a plug, a first nozzle, and a second nozzle. The longitudinal body having a first end, a second end, a longitudinal passage between the first and second ends. The first nozzle being affixed within the passage. The second nozzle being rotatable within the passage for alignment and misalignment with the first nozzle. The second nozzle having a plurality of gear teeth engageable with the actuator, which is adjustable. A method of mixing refrigerant fluid while passing through the distributor.

Abstract: In an ejector-type depressurizer, a nozzle arrangement converts pressure energy of refrigerant supplied from a radiator into velocity energy to depressurize and expand the refrigerant, and a pressurizer arrangement mixes the refrigerant discharged from the nozzle arrangement with the refrigerant drawn from an evaporator and converts the velocity energy of the refrigerant discharged from the nozzle arrangement into pressure energy to increase the pressure of the mixed refrigerant discharged from the pressurizer arrangement. The pressurizer arrangement includes a refrigerant passage that conducts the refrigerant supplied from the nozzle arrangement and the refrigerant supplied from the evaporator, and the refrigerant passage includes a refrigerant passing zone, through which the refrigerant from the nozzle arrangement and the refrigerant from the evaporator mainly pass during operation of the ejector-type depressurizer.

Abstract: System and method for reducing temperature variation among components in a multi-component system. In this respect, component temperatures are controlled to remain relatively constant (approximately within 5° C.) with respect to other components, while allowing for multiple fluctuating heat loads between components. A refrigeration system possessing a variable capacity (speed) compressor and an electronic valve is utilized to control the flow of refrigerant through the refrigeration system. The temperature of the components is reduced by metering the mass flow rate of the refrigerant cooling the components to compensate for the heat load applied to the refrigeration system.

Abstract: An ejector includes a nozzle having therein a throat portion, and a needle valve that extends at least from the throat portion to the outlet of the nozzle. The needle valve is displaced in an axial direction of the nozzle to adjust an opening degree of the throat portion and an opening degree of an outlet of the nozzle. Therefore, even when a flow amount of refrigerant flowing into the nozzle is changed, it can prevent a vertical shock wave from being generated by suitably adjusting both the opening degrees of the throat portion and the opening degree of the outlet of the nozzle. Accordingly, nozzle efficiency can be improved regardless of a change of the flow amount of the refrigerant.

Abstract: An evaporator 10 of an air conditioner comprises a refrigerant entrance port 12 and a refrigerant exit port 14. A division wall 16 of the evaporator is extended to form a housing 200. The housing 200 comprises an inlet 210 for the refrigerant traveling from a compressor, an outlet 220 communicating with the entrance port 12 of the evaporator, and a refrigerant path 230 returning from the evaporator. The cassette unit 100 comprises a pipe member 110, a flange member 120 and a lid member 130, with major components of the expansion valve such as a diaphragm and a driving member for driving a valve means assembled thereto. The cassette unit 100 is accommodated in a hole 240 with steps of the housing 200 to complete the expansion valve.

Abstract: In an ejector-type depressurizer, a nozzle arrangement converts pressure energy of refrigerant supplied from a radiator into velocity energy to depressurize and expand the refrigerant, and a pressurizer arrangement mixes the refrigerant discharged from the nozzle arrangement with the refrigerant drawn from an evaporator and converts the velocity energy of the refrigerant discharged from the nozzle arrangement into pressure energy to increase the pressure of the mixed refrigerant discharged from the pressurizer arrangement. The pressurizer arrangement includes a refrigerant passage that conducts the refrigerant supplied from the nozzle arrangement and the refrigerant supplied from the evaporator, and the refrigerant passage includes a refrigerant passing zone, through which the refrigerant from the nozzle arrangement and the refrigerant from the evaporator mainly pass during operation of the ejector-type depressurizer.

Abstract: A refrigerant nozzle and distributor assembly for use with a refrigeration system having a plurality of evaporator circuits. The refrigerant nozzle and distributor assembly comprise a distributor body having an internal wall that divides the distributor body into an inlet portion and an outlet portion and an aperture having a central axis and formed in the internal wall between the inlet portion and the outlet portion. This embodiment further includes an adjustable pin that has first and second ends and a longitudinal axis substantially-coaxial with the central axis wherein the first end is configured to cooperate with the aperture. The adjustable pin and the aperture form a nozzle. A method of manufacturing a refrigerant nozzle and distributor assembly and a refrigeration system is also provided.

Abstract: Multi-type air conditioner including an outdoor unit installed outside of a room having a compressor and an outdoor unit mounted therein, a plurality of indoor units each installed in a room having an electronic expansion valve and an indoor heat exchanger, a distributor for separating refrigerant from the outdoor unit at a gas-liquid separator and guiding separated refrigerant to the plurality of indoor units selectively depending on operation conditions, a first connection pipe for guiding the refrigerant from the outdoor unit to the gas-liquid separator in the distributor, a second connection pipe for guiding the refrigerant from the distributor to the outdoor unit, and a switching part in the outdoor unit having a first four way valve provided to a discharge side of the compressor for selective switching of a flow direction of the refrigerant flowing in the outdoor heat exchanger, and a second four way valve provided to be switched in conformity with switching of the first four way valve for maintaining t

Abstract: An ejector includes a nozzle and a needle valve formed in a tapered shape. The needle valve controls a throttle opening degree of the nozzle from a minimum degree to a maximum degree while an end section of the needle valve is positioned on a downstream side with respect to a throat section of the nozzle. Besides, a cross-sectional area of a nozzle diffuser is formed to be substantially constant, downstream of the throat section. Thus, a cross-sectional area of a substantial refrigerant passage defined by an inner surface of the nozzle and the needle valve is gradually widened in accordance with the tapered shape of the needle valve. Therefore, pressure loss accompanied with a rapid expanding can be suppressed. As a result, the throttle opening degree of the nozzle can be controlled while improving nozzle efficiency and ejector efficiency.

Abstract: Formed in a valve main body (1) is a refrigerant flow path (41) for lowering the amount of flow of a refrigerant which flows into an internal space (30) of a casing (3) from a refrigerant flow path (9) through a needle fit/insert clearance (17) defined between a needle fit/insert aperture (16) and a needle (2) inserted into the needle fit/insert aperture (16). When, with the rise or drop in refrigerant pressure, refrigerant flows through the needle fit/insert clearance (17), adhesion of sludge included in the refrigerant to the wall surface of the needle fit/insert clearance (17) is reduced by a lessened amount of refrigerant flow in the needle fit/insert clearance (17) by the refrigerant flow path (41). This therefore prevents, as far as possible, malfunction of the needle (2) due to sludge adhesion, thereby ensuring proper operation of the needle (2).

Abstract: An expansion device that is able to perform the functions of refrigerant expansion, flow control and shut-off. A cage extends from the ends of a body and supports a screen cover. An orifice tube extends through the body and a conical shaped valve seat forms an outwardly flared inlet to the orifice tube. A plunger defines a conical shaped valve end for engaging and sealing the conical valve seat to prevent refrigerant from entering the orifice tube. A rod extends from the valve end to react with a solenoid coil for moving the valve end into and out of engagement with the valve seat. A spring interacts between the plunger and the solenoid for urging the plunger into the valve seat.