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: A heat exchanger includes a plurality of flattened pipes, a header collection pipe, and a plurality of fins joined to the flattened pipes. The flattened pipes are joined to the header collection pipe. A fluid flowing through an interior of the flattened pipes exchanges heat with air flowing outside the flattened pipes. The header collection pipe has a header collection pipe and a cover member. The header collection pipe body is disposed so that a longitudinal direction is vertically oriented. The cover member is disposed inside from an upper end of the header collection pipe body, and closes off an upper side of the header collection pipe body. The header collection pipe body has a pipe end section that extends upward past the cover member. A drainage part is formed in a part of the pipe end section.

Abstract: A heat exchanger includes refrigerant tubes through which refrigerant flows, and cooling-medium tubes through which coolant of a vehicle-running electric motor flows. The refrigerant tubes and the cooling-medium tubes are alternately lamination-arranged. The heat exchanger further includes outside air passages between the refrigerant tubes and the cooling-medium tubes which are adjacent to each other, and outside air flows through the outside air passages. The heat exchanger further includes outer fins arranged in the outside air passages to be capable of transferring heat between the refrigerant tubes and the cooling-medium tubes. Accordingly, appropriate heat exchange can be performed between the refrigerant and the outside air, between the coolant and the outside air, and between the refrigerant and the coolant.

Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided that include multichannel tube configurations designed to promote flow of refrigerant within the multichannel tubes near the edges of the tubes that are contacted first by an external fluid. The tube configurations include flow paths of varying cross-sections, spacings, and sizes. Flow control mechanisms, such as inserts, blocking plates, sleeves, crimped sections, and crushed sections, may be employed with the flow paths to favor flow near the edges of the tubes that are contacted first by an external fluid.

Abstract: Evaporator, notably for motor vehicle air-conditioning circuit. According to the invention, the evaporator (1), which comprises three layers—upstream (2), intermediate (3) and downstream (4)—through which there flows a coolant that enters the evaporator (1) via the intermediate layer (3) and leaves the evaporator via the upstream layer (2) to cool an air flow (A) passing in succession across said upstream (2), intermediate (3) and downstream (4) layers, comprises means (5E) for inducing a pressure drop between the outlet of the intermediate layer (3) and the inlet of the downstream layer (4).

Abstract: A heat exchange tube for a refrigerant-flooded evaporator includes a tube body and a plurality of channels for conveying a cooling medium therethrough located in the tube body. One or more outer wall textural elements are included at the outer wall of the tube body to improve thermal energy transfer between the cooling medium and a volume of boiling refrigerant. A method of forming a heat exchange tube for a refrigerant-flooded evaporator includes urging a billet into an extrusion section and forming the billet into two tube halves including an outer wall and an inner wall having a plurality of channel halves. A textural element is formed at one or more of the outer wall and the inner wall via one or more rotating dies, and the two tube halves are joined to form the heat exchange tube.

Abstract: An evaporator heat exchanger is disclosed. The evaporator heat exchanger includes a bottom plate, a top plate, and at least one main plate between the bottom plate and the top plate. The at least one main plate includes a first face having one or more channels for flow of a first fluid along the first face and a second face opposite the first face having one or more channels for flow of a second fluid along the second face, wherein heat is exchanged between the first fluid and the second fluid through the main plate. Main plates adjacent to each other define an enclosed channel for fluid flow.

Abstract: An evaporator includes a vaporization chamber having a monomer inlet and a vapor outlet. There is a vapor nozzle in the vapor outlet. The evaporator also includes a collar positioned between the vaporization chamber and the vapor nozzle which increases the pressure in the evaporation chamber while the conductance through the nozzle is substantially unchanged.

Abstract: The present invention involves an evaporative chiller using a plate type string-screen-fill heat exchanger which is formed of a multiplicity of plate type string-screen-fills with string screens on their both sides. The hot water sprayed on the top perforated plate of the heat exchanger is imbibed into holes on the top plate by surface tension of strings suspending over the holes and then flows down on the surface of strings. During its flowing down on the surface of strings, the water is cooled through evaporation and convection mechanisms of water by contacting with air traveling transversely or slantly through the strings by means of a forced draft. The construction cost and electric consumption saving of the present invention are less than half cost of the current chiller and more than 30%, respectively. The fabrication method of the plate string-screen-fill heat exchanger is described in the present invention.

Abstract: Embodiments are directed to receiving, by a device comprising a processor, an indication that an air conditioning unit should turn on, commanding, by the device, a valve to open a specified extent based on the received indication, and subsequent to the valve opening to the specified extent, powering-on a piece of equipment that has an impact on refrigerant flow in the air conditioning unit.

Abstract: A non-flammable refrigerant mixture is disclosed. The non-flammable refrigerant mixture may include from 20 weight percent to 25.5 weight percent HFO-1234yf, (b) from 20 weight percent to 24.5 weight percent HFC-32, (c) from 24.5 weight percent to 30 weight percent HFC-125, (d) from 25.5 weight percent to 30 weight percent HFC-134a, and optionally (e) from about 0.0001 weight percent to 10 weight percent trans-HFO-1234ze. These refrigerant mixtures are useful as components in compositions also containing non-refrigerant components (e.g., lubricants), in processes to produce cooling, in methods for replacing refrigerants R-404A, R-507, R-407A, R-407C, R-407F and/or R-22, and in refrigeration apparatuses.

Abstract: A heat exchanger comprises a first inlet port, a first outlet port longitudinally spaced apart from the first inlet port, a plurality of substantially parallel parting plates stacked along a no-flow axis, a plurality of first flow spaces, and a plurality of metering plates. The plurality of first flow spaces are defined between adjacent ones of at least some of the parting plates and provide communication between the first inlet port and the first outlet port. The plurality of metering plates are disposed across an upstream end of at least one of the first flow spaces. Each of the plurality of metering plates includes at least one metering aperture providing fluid communication between the first inlet port and the at least one first flow space.

Abstract: An evaporator is used in an inclined state in which a first header tank is located on the upper side in relation to a second header tank. The leeward and windward header sections of the first header tank have compartments with which the furthest tube groups of leeward and windward tube rows communicate. The compartments are divided into upper and lower spaces by split flow control sections, and the upper and lower spaces communicate through refrigerant passage holes formed in the split flow control sections. The total cross sectional area of the refrigerant passage holes of the split flow control section of the compartment located on the lower side in the inclined state is smaller than the total cross sectional area of the refrigerant passage holes of the split flow control section of the compartment located on the upper side in the inclined state.

Abstract: A falling film evaporator for a heating ventilation and air conditioning (HVAC) system includes an evaporator housing and a plurality of evaporator tubes located in the evaporator housing and arranged into one or more tube bundles. A volume of thermal energy transfer medium is flowed through the plurality of evaporator tubes. One or more support sheets located along a length of the plurality of evaporator tubes to position and support the plurality of evaporator tubes in the housing, the one or more support sheets including one or more vapor flow passages to allow flow of vapor refrigerant along a length of the evaporator.

Abstract: An evaporator is used in an inclined state in which a first header tank is located on the lower side in relation to a second header tank. The leeward and windward header sections of the first header tank have compartments with which the furthest tube groups of leeward and windward tube rows communicate. The compartments are divided into upper and lower spaces by split flow control sections, and the upper and lower spaces communicate through refrigerant passage holes formed in the split flow control sections. The total cross sectional area of the refrigerant passage holes of the split flow control section of the compartment located on the lower side in the inclined state is smaller than the total cross sectional area of the refrigerant passage holes of the split flow control section of the compartment located on the upper side in the inclined state.

Abstract: In a heat exchanger, a refrigerant side header tank and a coolant side header tank which are connected with refrigerant tubes and coolant tubes include a plate header member, a communication intermediate plate member, a blocking intermediate plate member, and a tank header member. The communication intermediate plate member includes first and second fluid communication holes through which refrigerant and coolant flow, respectively. In this situation, with a simple configuration in that a part of the first and second fluid communication holes is blocked by the blocking intermediate plate member, a communication state between both tubes and internal spaces of the header tanks is regulated.

Abstract: A rotating valve includes an inlet region, an outlet region, and a switching region having a switching member that can be rotated about an axis. In a first position of the switching member the plurality of inlets are connected to the plurality of outlets in a first association, and in a second position of the switching member the plurality of inlets are connected to the plurality of outlets in a second association. The switching member has a plurality of openings through which the fluid flows flow axially in the direction of the rotation axis and are moved together with the switching member. The openings alternately cover a plurality of stationary, axially directed openings in the course of the rotation of the switching member. Different associations of the inlets with the outlets are carried out by the alternating covering of the axially directed openings.

Abstract: An inlet arrangement (1) for use in plate heat exchangers (2) is disclosed. The arrangement comprises an element with a dispersion opening (6) for arrangement in an inlet (5) in a plate exchanger. The inlet arrangement (1) is arranged to form a mainly fitting cylinder wall when introduced in the inlet (5). The cylinder wall comprises at least one opening (6) which extends partly or fully along the length of the inlet (5) and is sealingly arranged towards the inlet (5) of the plate heat exchanger. Furthermore, the opening (6) is oriented towards one side at an angle from the perpendicular. The use of such inlet arrangement (1) is also disclosed.

Abstract: A heat exchanger includes a heat exchange portion in which at least tubes of refrigerant tubes or coolant tubes are stacked and at least one of refrigerant or coolant exchanges heat with air. An air passage is formed in a space formed between tubes of the refrigerant tubes and the coolant tubes which are adjacent to each other. An upstream heat exchange portion located on an upstream side in a flow direction of air and a downstream heat exchange portion located downstream of the upstream heat exchange portion in the flow direction of air are provided as the heat exchange portion. A ratio of the number of the refrigerant tubes to the total number of tubes of the upstream heat exchange portion is different from a ratio of the number of the refrigerant tubes to the total number of tubes of the downstream heat exchange portion.

Abstract: A refrigerating cycle unit includes an ejector and a heat exchanger defined by layering a plurality of plates. Each of the plates has a refrigerant passage, and the refrigerant passages are connected by a header tank in a layering direction of the plates. At least two of the plates are fix plates having a fix portion to fix the ejector, and a communication portion through which the ejector and the header tank communicate with each other. The ejector is arranged between the fix portions of the fix plates in the layering direction, so as to be integrated with the heat exchanger.

Abstract: An evaporator having a plurality of flat refrigerant flow tubes disposed in parallel such that their width direction coincides with an air flow direction and they are spaced from one another. Air-passing clearances are formed between adjacent refrigerant flow tubes. Cool storage material containers filled with a cool storage material are disposed in some of the air-passing clearances, and each cool storage material container is brazed to the refrigerant flow tubes located on opposite sides thereof. Corrugated fins are disposed in the remaining air-passing clearances, and each fin is brazed to the refrigerant flow tubes located on opposite sides thereof. Each cool storage material container includes a plurality of convex portions projecting outward from opposite side surfaces thereof, and projecting ends of the convex portions are joined to the corresponding refrigerant flow tubes.

Abstract: A refrigerant evaporator includes a shell having a refrigerant inlet and a refrigerant outlet, and a plurality of tubes disposed within the shell and carrying a process fluid. One embodiment includes at least a first plurality of the tubes are immersed in liquid refrigerant within the shell, and at least a second plurality of the tubes are partially immersed in liquid refrigerant and partially surrounded by gaseous refrigerant. The refrigerant evaporator also includes a baffle positioned adjacent the first plurality of tubes and immersed in the liquid refrigerant to displace the liquid refrigerant.

Abstract: A refrigerant distributor is described and which includes a tank defining an internal cavity for receiving a source of refrigerant; an inlet conduit for delivering the source of the refrigerant to the internal cavity of the tank; a contaminant collection container coupled in fluid receiving relation relative to the internal cavity of the tank and in disposal fluid receiving relation relative to the inlet conduit; and a plurality of refrigerant distributor conduits coupled in fluid flowing relation relative to the internal cavity of the tank and which have a multiplicity of apertures having variable diametral dimensions and which facilitate a variable flow of the source of refrigerant out through the refrigerant distributor conduits as the volume of the refrigerant in the tank increases.

Abstract: The invention utilizes concentrated solar energy in a novel air conditioning system which includes storage capabilities. The refrigerant circuit “high” pressure side is comprised of multiple solar concentrators placed between two positive rotary valves. The “low” pressure side is compromised of the evaporator coil with expansion valve. The refrigerant is confined between the two rotary valves. As solar energy is absorbed into the refrigerant, the pressure and temperature rise. The two rotary valves are then caused to rotate. With rotation, the refrigerant is moved through the circuit. The circuit also includes a condenser to give up heat and an evaporator/expansion valve in which temperature drops with the expanding gas. In addition, this system places the evaporator in a water tank. The water is made cold by conduction with the evaporator and serves as a storage medium. All energy absorbed is converted to cold and stored and utilized as required.

Abstract: The device according to the invention for the cooling of articles, comprising at least one channel which can be connected to a first coolant source such that a first stream of a first coolant can flow through the channel, the articles to be cooled being introducible into the stream, is distinguished in that at least one cross-sectional stabilizer for stabilizing the cross section of the at least one channel is formed. The device according to the invention advantageously allows the defined cooling of articles, in particular the freezing of drops of a liquid or pasty material, in particular of liquid or pasty foods. In particular, a deformation, such as warping, of the channels on account of pronounced temperature gradients and/or temperature transients is effectively reduced. Thus, even after cooling-down operations, uniform cooling conditions can be ensured.

Abstract: Cooling device with a cooling unit connected to a cooling means for providing cooled air to the surroundings and which is located over an area for arranging merchandise to be refrigerated. The device includes a frame structure to be suspended freely over a merchandising area, with the cooling unit being arranged in the frame structure together with the further parts of a refrigerating unit.

Abstract: An evaporator includes a cool storage material container. The cool storage material container contains a cool storage material and is disposed in a second part of the spaces. The cool storage material container includes a container main body portion joined to the refrigerant flow tubes. The outward projecting portion extends from an upper end of the leeward edge or windward edge of the container main body portion. The outward projecting portion has an expansion portion projecting from the container main body portion and projecting thickness of the expansion portion is greater than a thickness of the container main body portion. The expansion portion is located outward of the fins. At least one of left and right side walls of the expansion portion is so constructed to deform when an internal pressure in the cool storage material container increases beyond a predetermined pressure.

Abstract: An air conditioning system includes an air conditioning portion configured to condition a volume of air flowing there-through and an exhaust portion configured to exchange heat with the air conditioning portion through a working fluid. A portion of the volume of air exiting the air conditioning portion is mechanically diverted into the exhaust portion.

Abstract: Novel method of preserving the internal environmental air temperature and thereby stabilizing the temperature within the cargo compartment of a transport container, and thereby protecting the cargo itself from degradation due to temperature fluxuations, including a freeze and heat barrier attained through the characteristics of the article of manufacture, composition of matter, and method of preservation of the internal environmental air temperature and proximate cargo within said cargo compartment; along with a machine or devise that is used as either a stand-alone container, or as an insert to retrofit existing containers so as to make said retrofitted devices capable of providing cooling over an extended period of time are disclosed. The inserted cargo compartments described herein are particularly useful for temperature-stabilizing cargo compartment shipping containers that are required to maintain a temperature below ambient for a time sufficient to complete delivery of the container and its contents.

Abstract: Disclosed is a gravity flooded evaporator for use with commercial or industrial heating, air conditioning, and ventilation systems, and which does not require integration or use of a conventional, separately field-piped, surge vessel and associated subsystem.

Abstract: An auxiliary heat exchanger may reduce a temperature of a refrigerant allowed to pass through the auxiliary heat exchanger. The operation of the auxiliary heat exchanger may be controlled. In some implementations, the auxiliary heat exchangers may include fluid retention members, thermoelectric coolers, and/or other types of heat exchangers.

Abstract: A fresh water recovery system includes a solar heated evaporator and a heat exchanger operating in a waste heat recovery mode for recovering fresh water from a salt water supply.

Abstract: A heat exchanger unit includes first and second plate heat exchangers disposed in series along a refrigerant flow direction. A refrigerant flows from the first plate heat exchanger to the second plate heat exchanger when the heat exchanger unit operates as an evaporator to heat the refrigerant, and the refrigerant flows from the second plate heat exchanger to the first plate heat exchanger when the heat exchanger unit operates as a condenser to cool the refrigerant. The first and second plate heat exchangers have first and second gas-liquid mixing structures to promote gas-liquid mixing of the refrigerant when the heat exchanger unit heats the refrigerant. The first and second gas-liquid mixing structures are configured such that pressure loss becomes larger when the gas-liquid mixing action becomes higher and such that the gas-liquid mixing action of the first gas-liquid mixing structure is higher than the gas-liquid mixing action of the second gas-liquid mixing structure.

Abstract: In this method, a refrigerant (52) is compressed (32) in a refrigerating circuit, then condensed by cooling in a condenser (44), then expanded in a throttle valve (62) and delivered in the expanded state, in the form of wet vapor (52), to an evaporator (60) that is in thermally conductive contact with a substrate (12) to be cooled. The cooling process thus operates similarly to a liquid cooling process, but with a higher mean logarithmic heat transfer temperature difference, which allows lower temperatures of the substrate (12) to be achieved and makes possible a better heat transition coefficient, since the refrigerant is present as wet vapor. A corresponding arrangement is likewise described.

Abstract: Disclosed are ice making machines which use aluminum as an alternative to copper in the ice making machine evaporator and also use an alternate coolant/refrigerant specifically targeted to provide improved heat transfer transport properties and higher heat capacitance than conventional HFC coolant/refrigerants. Optionally, rotary compressors are used in place of conventional reciprocating compressors, further enhancing performance for the ice making machine. The disclosed ice making machines maintain high efficiency and ice output, and provide equal or better energy efficiency than comparative ice making machines. At the same time, savings are realized in the material cost for the evaporator, and resulting from the combined effects of lower density and lower metal cost/unit weight offered by aluminum as compared to copper.

Abstract: An evaporator for use in a refrigeration system includes a shell and a tube bundle, the tube bundle having a plurality of tubes extending substantially horizontally in the shell. A hood is disposed over and laterally surrounds substantially all of the plurality of tubes of the tube bundle. A distributor is positioned between the hood and the tube bundle. The hood is asymmetrically disposed within the evaporator.

Abstract: An evaporator has a first longitudinal direction and includes first and second header tanks. The first header tank includes a first surrounding wall projecting from at least one of a first end portion and a second end portion along a first longitudinal direction to define a first recess to surround the first recess at at least one of the first end portion and the second end portion. The first surrounding wall has at least one first drain opening to drain water from the first recess. The second header tank has a second longitudinal direction and is disposed apart from the first header tank so that the first longitudinal direction is substantially parallel to the second longitudinal direction. The second header tank has a second surrounding wall having at least one second drain opening to drain water from the second recess.

Abstract: A method and apparatus for conditioning ambient air for use in an enclosure is disclosed which cools the ambient supply air stream in sensible energy recovery device or cools and dehumidifies the ambient supply air stream in an enthalpy energy recovery device. The thus cooled air is then cooled by a cooling coil of a refrigerant cooling system to reduce its temperature and humidity. The thus cooled and dehumidified air is then passed through a segment of a rotating desiccant wheel or through a different type of desiccant dehumidification device under conditions which reduce its moisture content and increases its temperature. The supply air is then delivered from the desiccant wheel to the enclosure. The desiccant wheel is regenerated by heating a separate regeneration air stream, provided by the exhaust air from the space and using the condensing coil of the refrigerant system to increase the regeneration air stream temperature.

Abstract: A thermostat includes a compressor, a heat sink, a securing panel, a heat isolation panel, and an evaporator. The securing panel includes a securing panel body and an extending portion extending from the securing panel body, and the securing panel body loads the compressor and the heat sink. The heat isolation panel is secured to the extending portion and the heat isolation panel is substantially perpendicular to the securing panel body. The evaporator includes a side wall and an upper wall connected to the side wall. The upper wall defines an output opening; the side wall is substantially parallel to the heat isolation panel. The evaporator is secured to the heat isolation panel via a mounting member.

Abstract: A rotating valve is provided that includes an inlet region having a plurality of stationary separate inlets for several flows of a fluid and an outlet region having an in particular identical plurality of stationary separate outlets for the flows of the fluid, wherein between the inlet region and the outlet region a switching region having a switching member that can be rotated about an axis is provided, wherein in a first position of the switching member the plurality of inlets are connected to the plurality of outlets in a first association, and wherein in a second position of the switching member the plurality of inlets are connected to the plurality of outlets in a second association, wherein the switching member comprises a plurality of openings through which the fluid flows flow axially in the direction of the rotation axis and which are moved together with the switching member, the openings alternately covering a plurality of stationary, axially directed openings in the course of the rotation of the sw

Abstract: An evaporator having a phase change material clam shell housing is provided. The evaporator includes an upper manifold, a plurality of refrigerant tubes extending from the manifold, and a louvered clam shell housing defining a chamber for storing a phase change material. The louvered clam shell housing is disposed between and in thermal communication with the upper portion of two adjacent refrigerant tubes. The louvered clam shell housing is formed of two clam shell plates, each having louvers defined by slats folded into the phase change chamber. The folded slats define louver openings in the clam shell housing enabling the phase change material to make direct contact with the adjacent refrigerant tubes, thereby improving thermal communication between the refrigerant flowing in the tubes and the phase change material in the clam shell housing.

Abstract: A vaporizer for a cooling circuit, particularly for a motor vehicle, is provided that includes a vaporization region, wherein a coolant flowing through the vaporization region takes up heat from an outside region, wherein the vaporization region is downstream of a first expansion element on the inlet side in the direction of flow of the coolant, wherein an exchanger member is provided between the vaporization region and the first expansion element, and wherein heat can be transferred from the coolant upstream of the vaporization region to the coolant downstream of the vaporization region.

Abstract: An aircraft includes a cooling system having a cooling circuit to circulate a two-phase refrigerant therethrough, an evaporator disposed in a first section of the cooling circuit and having a refrigerant inlet and outlet, a condenser disposed in a second section of the cooling circuit and having a refrigerant inlet and outlet, a first cooling circuit control valve disposed in the cooling circuit between the refrigerant outlet of the evaporator and the refrigerant inlet of the condenser, and a second cooling circuit control valve disposed in the cooling circuit between the refrigerant outlet of the condenser and the refrigerant inlet of the evaporator. The first and the second cooling circuit control valves in their closed state seal the first section of the cooling circuit from the second section of the cooling circuit. The second section of the cooling circuit is installed in an unpressurized region of the aircraft.

Abstract: A conduit for the transfer of a cooling medium is provided that may include a tube that has a length and a through aperture that extends through the entire length. The tube may have an inner surface that defines a helical channel that may be continuous along a length of the tube such that the helical channel is continuous along a plurality of turns of the helical channel along the inner surface. The conduit may be incorporated into a cooling system of a magnetic resonance imaging device.

Abstract: The invention relates to a device (1) for separating droplets, which comprises—an outer casing (2), which has a substantially horizontal cylindrical shell (14) and substantially vertical ends (9);—an inlet connection (7) for a substance to be vapourised for leading a substance to be vapourised into the outer casing;—a plate pack (3) functioning as an evaporator, which is arranged inside the outer casing, in its lower part (23);—an inlet connection (10) and an outlet connection (11) for a heating substance for leading a heating substance into the plate pack and out of it;—a gravitational droplet separator (4), which is arranged inside the outer casing, above the plate pack;—an outlet connection (8) for vapourised substance for leading the vapourised substance out of the outer casing from its upper part (15);—one or more filler units (12a, 12b) arranged between the outer casing (2) and the plate pack (3) for decreasing the liquid volume of the substance to be vapourised inside the outer casing.

Abstract: A multiple panel heat exchanger and atmospheric water harvester using the same is provided. The multiple panel heat exchanger includes two or more heat exchange panels arranged in side-by-side series with their major cross sectional areas normal to airflow across the heat exchanger. The heat exchange panels are fluidically connected in series and with a first heat exchange panel in the series having a heat exchange fluid inlet into the heat exchanger and a last heat exchange panel in the series having a heat exchange fluid outlet from the heat exchanger. The multiple panel heat exchanger is suited for a heat exchanger in a refrigeration circuit, such as an evaporator in a vapor-compression refrigeration circuit. An atmospheric water harvester including the multiple panel heat exchanger is also provided.

Abstract: An evaporator includes a vaporization chamber having a monomer inlet and a vapor outlet. There is a vapor nozzle in the vapor outlet. The evaporator also includes a collar positioned between the vaporization chamber and the vapor nozzle which increases the pressure in the evaporation chamber while the conductance through the nozzle is substantially unchanged.

Abstract: Provided is a refrigerator configured to improve the structure of an ice-making chamber provided to a refrigerator door, thereby efficiently supplying cool air into the ice-making chamber. The refrigerator includes a main body including a storage chamber, a refrigerator door rotatably coupled to the main body, an ice-making device provided to the refrigerator door and configured to make ice, an ice-making unit provided to the ice-making device and including a cool air introduction part, a freezing core vertically arranged in the ice-making unit and cooled by cool air, and an ice tray configured to receive at least one portion of the freezing core therein, wherein the cool air introduction part is provided on an upper side of the freezing core. Cool air is efficiently introduced into the ice-making chamber, thereby increasing the amount of ice made.

Abstract: A heat exchanger includes a shell communicating with a first fluid inlet pipe and a first fluid outlet pipe, end caps coupled to ends of the shell to communicate with a second fluid inlet pipe and a second fluid outlet pipe, a plurality of tubes disposed in the shell to constitute a channel through which a second fluid flows, an end baffle located at ends of the tubes to prevent mixing of a first fluid and the second fluid, and a first plate to fill gaps between the tubes and the end baffle.

Abstract: An air passage that connects an inlet port that sucks air from a dehumidification target space and an outlet port that supplies air to the dehumidification target space; a heating device that heats the air; a first moisture adsorption/desorption device releasing moisture into air that has a relatively low humidity and absorbing moisture from air that has a relatively high humidity; a second moisture adsorption/desorption device disposed so as to be spaced apart from the first moisture adsorption/desorption device, a cooling device cooling air that has been humidified; and switching devices switching between an air path passing air through the first moisture adsorption/desorption device, the cooling device, and the second moisture adsorption/desorption device in this order, and an air path in which the air passes through the second moisture adsorption/desorption device, the cooling device, and the first moisture adsorption/desorption device in this order.