Abstract: An evaporator includes a flat tube extending in a vertical direction and having a drain groove for guiding condensed water downward, at a middle portion thereof in an air flow direction. A corrugated fin joined to the tube is divided by a gap portion into an air upstream side first fin and an air downstream side second fin. The gap portion faces the drain groove of the tube. Accordingly, condensed water produced at the air upstream side first fin can be smoothly discharged from the evaporator through the drain groove.

Abstract: A condensate drain outlet for a room conditioner of the type which includes a sheet metal basepan having a horizontally extending bottom wall and a rear wall joined to and extending upwardly from the bottom wall in a perpendicular relationship. The rear wall has a substantially U-shaped opening formed therein. A one-piece molded plastic condensate drain insert for insertion into the U-shaped opening includes a mounting plate having a size configured to overly the U-shaped opening in the rear wall and having an opening extending therethrough. A tubular section, having an axial opening extending therethrough, extends from one side of the mounting plate. A U-shaped section extends by a distance greater than the thickness of the rear wall from the other side of the mounting plate. The U-shaped section has an open back, and an inner surface which is in fluid communication with the opening in the plate and the opening in the tubular section.

Abstract: There is disclosed a novel apparatus for use as a beverage container glass door merchandiser. The apparatus includes an insulated enclosure, the enclosure having an outside and an inside and at least partially defining a drain from the inside to the outside. A Stirling cooler has a hot portion and a cold portion. A heat-conducting member is disposed inside the enclosure and is connected in heat exchange relationship to the cold portion of the Stirling cooler. The heat-conducting member is also operatively associated with the drain such that condensation on the heat-conducting member can flow out of the enclosure through the drain. A method of cooling an insulated enclosure is also disclosed.

Abstract: In order to cool a room, a cooling element fitted in the ceiling region is cooled to below the freezing point, preferably to about −40° C., during the cooling phases so that condensate forming thereon freezes immediately. During regeneration phases when the room is not in use, the cooling element is defrosted and the melted condensate is caught in a condensate tray beneath the cooling element and drained via a discharge. The great temperature difference between the room to be cooled and the cooling element also makes it possible to obtain a strong cooling effect with a small cooling element, especially by indirect radiation exchange between the room and the cooling element via an intermediate ceiling. The air in the room is also dehumidified since water vapor is deposited on and bonded to the cooling element in the form of ice.

Abstract: An air conditioning apparatus includes a case body, and an air cooling coil disposed in the case body to cool an air stream flowing thereacross. A blower is disposed in the case body, and is driven by an output shaft of a motor to blow the air stream across the air cooling coil and deliver cooled air stream forwardly and outwardly of the case body. A drain pane is disposed under the air cooling coil to collect droplets of condensate, and has a first outlet to drain water therein. A water pump includes a pump body with an accommodation chamber, and an impeller received in the chamber and provided with a driven shaft. The driven shaft extends outwardly of the pump body to form a coupling end to be coupled with the output shaft so as to enable the motor to drive the impeller to rotate.

Abstract: An air conditioner indoor unit which includes a heat exchanger; a fan; a drain pan provided under the heat exchanger, the drain pan retrieving drain water condensed on the heat exchanger; an outlet nozzle member provided under the drain pan, the outlet nozzle member providing an air path for blowing off air supplied by the fan and a hollow space between the drain pan and the outlet nozzle member; a drain pan drainage formed in the drain pan, the drain pan drainage draining drain water stored in the drain pan; a hollow space drainage formed in the outlet nozzle member at a location close to the drain pan drainage, the hollow space drainage draining drain water stored in the hollow space; and a drain hose connected to the drain pan drainage and the hollow space drainage.

Abstract: An air-conditioning condensate drainage system for mounting to the roof membrane of the roof structure of buildings or for constructing directly onto the roof membrane of a building structure. The air-conditioning condensate drainage system has an isolation membrane having a bottom surface for assembly to a roof membrane. A pair of ridge structures are disposed in fixed relation with the isolation membrane and are disposed in spaced relation with one another and cooperate with the isolation membrane to define an air-conditioning condensate drainage channel between the spaced ridge structures. Each of the ridge structures has one or more ridge defining elements which is fixed to the isolation membrane and projects above the isolation membrane sufficiently to define a condensate drain channel therebetween.

Abstract: A cooling unit has a cooling casing for forming an air passage, and a cooling heat exchanger disposed in the cooling casing. The cooling casing is composed of upper and lower cases detachably connected to each other in an up-down direction on a connection portion therebetween. The lower case has a first end surface on the connection portion at an inside of the cooling casing, and a protrusion portion protruding toward the upper case from the first end surface. On the other hand, the upper case has a second end surface contacting the first end surface on the connection portion, and a recess portion into which the protrusion portion is fitted. Further, a step portion downwardly stepped from the first end surface is formed in the lower case on an inside of the protrusion portion at a position proximate to the opening portion. Thus, a space is formed under the second end surface of the upper case.

Abstract: An automotive air conditioner comprises an offset blower for blowing an air, an evaporator is centrally disposed within a dashboard and receives the air from below, and a heater approximately horizontally disposed above the evaporator. The evaporator inclines downward along the direction of the air flow. A plurality of condensed water guide plates are provided under the evaporator so as to allow a condensed water smoothly flow on the surface of each guide plate and is discharged from the evaporator through a condensed water drain pipe.

Abstract: A multi-pan for an air conditioning system which has a coil positionable in one of three orientations has been invented, the multi-pan includes, in certain aspects, a bottom pan having walls defining an inner space the bottom pan disposed for receiving water from the coil when the coil is positioned above the bottom pan, a first side pan connected at one end to the bottom pan, the first side pan disposed for receiving water from the coil when the coil is positioned above the first side pan, and a second side pan connected at one end to the bottom pan and spaced apart from the first side pan by the bottom pan, the second side pan disposed for receiving water from the coil when the coil is positioned above the second side pan. the bottom pan can be configured for an A (or V) coil with an air flow space therethrough, or for an M-coil with two air flow spaces therethrough and a middle pan part.

Abstract: A condensate retaining apparatus for use with a refrigeration heat exchanger having at least two plannar slabs mounted in an air duct. Each slab has an upper and lower end and forms an oblique angle with respect to the direction of air flow and further includes a coil for conducting a fluid and a plurality of form defining channels for conducting condensate toward the lower end of the slab. The slabs are mounted so that the lower end of each overlying slab is offset inwardly from the upper end of the nearest underlying slab with each pair of adjacent slab ends defining an apex of the heat exchanger. The apex is covered to prevent condensate from being entrained in that air flow and as well as being shielded from the air flow.

Abstract: A condensate drain pan arrangement with a positive slope. The drain pan arrangement comprises a housing including a first wall with a first aperture, a second wall with a second aperture where the first and second walls are spaced; a coil located in the space in the housing and between the first and second walls; and a drain pan having a condensate receiving portion within the housing and located under the coil. The drain pan includes a first end cap with a drainage attachment proximal the first aperture and positively engaged to the first wall, and a second end cap proximal the second aperture. The second end cap includes an engagement portion and a bottom portion. The drain pan arrangement includes an access plate including a lifting portion operably engaged to the bottom portion and raising same predetermined amount, and a securing portion operably engaged with the engagement portion to prevent movement of the second end cap, the second end cap is fixed with relation to the second wall.

Abstract: A refrigerant system adapted for use with a vehicular air conditioner includes a supplemental heat exchanger for cooling refrigerant gas flowing into a compressor and for cooling refrigerant liquid flowing into an expansion valve. Water condensate from an evaporator is used for cooling the gas refrigerant flowing through the heat exchanger.

Abstract: Providing an elongated vented drip tray having a narrow solid bottom to be used to collect frost as it melts during the defrosting of a gas absorption type refrigerator. The invention is particularly directed at gas absorption type refrigerators because solid drip trays currently used tend to obstruct airflow within the fresh food compartment. Because gas absorption refrigerators rely on natural convection, placing a solid drip tray inside of the refrigerator compartment beneath the cooling fins of the fresh food compartment somewhat inhibits the free flow of air in that compartment. By providing a vented drip tray, airflow throughout the fresh food compartment is not substantially hindered and airflow may actually increase.

Abstract: An improved cooled air suction duct for refrigerator having a defrosted water receiving member integrally formed with a cooled air suction duct, thus improving the flow of the cooled air in the system and enhancing productivity, which includes a defrosted water receiving member disposed at a lower side of an evaporator for receiving a defrosted water; and a cooled air suction duct imbedded within an intermediate insulation wall for returning a cooled air to the evaporator, the cooled air suction duct being integral with the defrosted water receiving member.

Abstract: An improved base pan is disclosed for a large ground or roof mounted "packaged" air conditioning unit. The base pan comprises a non-corrosive polymeric material but includes a section which is coated with a non-flammable substance. An airflow section of the base pan is defined by a raised platform, which, in combination with a set of ramp members, directs precipitation and condensation from the sensitive airlow section. Moisture droplets which do fall on the sensitive airflow section are directed toward a channel which uniformly slopes toward a drain hole.

Abstract: A drain pan system has been invented for receiving water condensed on and flowing from an air conditioning coil, including a pan with a pan member for receiving and holding water from the coil, and the pan member having a side lip for connecting to an adjacent pan, the adjacent pan adjacent the coil and disposed at an angle to the pan member. In one aspect the drain pan is used with the coil which is generally configured in a V-shape when viewed from an end thereof. In one aspect the system includes a lateral pan or pans sealingly connectible to the adjacent pan and to which the pan member is sealingly secured.

Abstract: A method and apparatus are described for retrieving condensed fluid from an air conditioner in a vehicle, storing the collected fluid for subsequent use, and transferring the retrieved fluid to a reservoir in the vehicle. The method and apparatus described allow manual distribution or automatic distribution of the fluid.

Abstract: The pressure within a compartment of a refrigerator is kept equalized with ambient atmospheric air to facilitate the opening of the refrigerator door. An air passage capable of communicating the compartment with ambient air is closed when the compartment pressure is equal to the ambient air pressure, and is automatically opened when the compartment pressure become less than the ambient air pressure. The opening of the air passage is under the control of water contained in a trap portion of defrost water drain conduit of the refrigerator. The level of that trapped water fluctuates in height in response to differences in pressure between the compartment and ambient air, and the change in that height is used to open (or close) the air passage. The trapped water itself can be used to block the air passage, or a closure member floating on the water can block the air passage.

Abstract: A fan coil condensate drain pan is made to be field adjustable to be pitched either to the fight side or to the left side when the fan coil unit is installed. This permits the drain pan to be self-draining and to be connected to a convenient field drain with a minimum of piping. The drain pan employs an elongated trough with an open upper side, and with left and right end caps. There are left and fight drain nipples that project through the respective end caps. The cabinet for the fan coil unit has left and right mounting brackets to which the left and right end caps are attached. The brackets have vertically elongated adjustment slots, and sheet metal screws or other suitable fasteners in these slots hold the end caps in place. The pitch can be selected on installation by loosening the screws on one side and lowering the end cap at that side. The drain nipple on the other side can be left open to serve as an overflow outlet.

Abstract: The cooler apparatus of the invention is designed to be mounted on an enclosure (2) and it comprises a housing (3) internally provided with fixed structure for collecting (12, 22, 26, 37, 39) and for evacuating (15, 24, 34, 35) condensates in all mounting positions of the cooler apparatus. The apparatus is applicable to cooling the cab of a vehicle.

Abstract: A vacuum cooler for produce and the like comprising a vacuum tube forming a vacuum chamber into which produce is placed. A vacuum pump lowers the atmospheric pressure while cold water is gently sprayed onto the produce. Water vapor from the produce is condensed, and directed to a sump in the chamber without permitting such condensed water to impinge on the produce. The cooler includes a venting system that admits outside air into the vacuum chamber, gradually returning the chamber to atmospheric pressure, and permitting removal of produce from the chamber.

Abstract: An apparatus and method for disposing of the condensate collected in the drip pan of the evaporator coil of a refrigeration system located within a storage enclosure. An air pump is used to withdraw the condensate by aspiration from the drip pan and deposit it in a storage container outside of the enclosure. The stored condensate is subsequently transferred to a pan open to the atmosphere from which the condensate evaporates.

Abstract: Two or more indoor units are provided on ceiling and floor of a room. Each of the indoor units has an air heat exchanger for cooling indoor air, and a drain pan for catching drainage produced by the air heat exchanger. A drain pipe is provided in the ceiling and under the floor. The, drainage in each of the drain pans flows into the drainage pipe. The drain in the drain pipe is carried and discharged outdoor by a drain carrying unit.

Abstract: A reach-in cooler with interchangeable refrigerator and freezer systems is disclosed. The reach-in cooler comprises an insulated cabinet member with walls including at least one door opening and a floor completing the cabinet body, but with an open roof area; an insulated roof member configured to close the open roof area of the cabinet; a refrigeration system comprising a condenser and a compressor mounted on the top of the roof member, an evaporator mounted on the bottom of the roof member and refrigeration lines connecting the evaporator to the condenser and the compressor running through the insulated roof member; and sealing means for providing an air tight seal between the cabinet member and the roof member when the roof member is placed to close off the open roof area of the cabinet.

Abstract: A stack type evaporator according to the invention comprises a plurality of plate-shaped tubular elements stacked in a direction of their width with a fin member interposed between two of such tubular elements which have inlet header portions at their ends and outlet header portions at their further ends so that coolant can flow straight within said tubular elements, a pair of dish-shaped core plates which constitute each tubular element having inner surfaces provided with ribs arranged at regular intervals in a direction of coolant flow, wherein an end surface of each rib protruding from one core plate is alternately bonded to a flat body of the other core plate whereby the coolant paths within each tubular element are formed parallel with each other and straight from the inlet header portion toward the outlet header portion.

Abstract: A dehumidifier in the form of a circular or a multisides for intaking the wet air from at least three sides of the lower portion and blowing the dehumidified air out of only one direction of the upper portion to occur the convection circulating of the air flow to enhance the dehumidifying effect.

Abstract: This invention relates to an air-water heat exchanger with an exchanger unit and a blower contained in a housing, which can be placed on the cover of a control box or the like and which is provided on the side facing the cover with an inlet and an outlet opening, which are aligned with corresponding openings in the cover of the control box or the like. By a particular routing of the air in the area of the inlet and outlet openings of the exchanger unit, even in case of leakage of the exchanger unit, no water can come out of the inlet and/or outlet openings and reach the control box or the like.

Abstract: A refrigerating machine (10) of the refrigerator or freezer type comprises a device (33) for defrosting cold parts to transform the ice into water to be discharged. It has an end-of-defrosting detector (20) comprising:(1) a reservoir (24) which receives the water to be discharged, one of the branches (23) of a siphon (21) extending into said reservoir in order to drain the reservoir when the water reaches the level required for activation of the siphon, the other branch (22) being situated externally of the reservoir,(2) a light barrier (27, 28), comprising a light source and a light receiver arranged around the other branch (22) of the siphon in such a way that the light beam of the light barrier is interrupted by the passage of water through said other branch while defrosting is in progress, and(3) a electric circuit (30, 31, 32, 34) which stops defrosting when the light beam is not interrupted for a predetermined time.

Abstract: A chamber comprising an air humidification device is disclosed. This chamber comprises an improved humidification device. The chamber has a vessel containing water which gets evaporated to humidify the water of the chamber. When a refrigerated chamber is used, the water vapor gets condensed and solidifies in forming frost on an evaporator. Advantageously, the defrosting water is used to re-humidify the air of the chamber in making this water follow a path comprising projecting features and negative slopes. The non-evaporated defrosting water is either added to the tank or rejected outwards. The disclosed device can be applied chiefly to the humidification of chambers. It can be applied notably, to the humidification of refrigerated chambers such as, for example, chambers designed for the storage, keeping and aging of bottled wine. It can also be applied to refrigerated chambers for the storage of foodstuffs or photosensitive materials such as, for example, photographic films or photosensitive paper.

Abstract: This air conditioner stand is designed to support an air conditioner within the opening of a fireplace instead of a window opening, and the hot air produced by the air conditioner's condenser will be blown up the fireplace chimney by a fan in the circuit of the stand. Primarily, the stand consists of a base that supports the air conditioner, and the base is sloped rearward and is provided with a stop member that includes the mounted fan. Provision is also provided in the stand for water to drain through a flexible hose that may extend into the ash trap opening in the floor of the fireplace.

Abstract: The invention relates to a cooling device having an evaporator, a blower with an outlet connecting piece, a condenser, and a compressor. A condensate collecting pan is positioned below the evaporator. The collected condensate water flows from the condensate collecting pan through a discharge pipe. In order for relatively large quantities of accumulating condensate water to be removed from the cooling device, the condensate water flows from the discharge pipe into a condensate collecting pan positioned below and downstream of an outlet connecting piece of the blower which discharges a warm air current. The warm air current of the blower flows to an outlet hole through an air channel which is connected to an outlet connecting piece of the blower.

Abstract: A rigid plastic twist lock drain funnel for conveying defrost water from the interior of the refrigerator cabinet, through the insulation space, to the exterior. A top portion of the funnel has a groove seating an O-ring, and a central portion has a pair of radially extending cam-shaped ears. During fabrication, the drain funnel is inserted from inside the refrigerator liner through an aperture having notches for receiving the ears, and then the funnel is twisted approximately 90.degree. to engage the ears as a cam lock. In such arrangement, the funnel is securely attached to the liner and the O-ring provides a seal therebetween so as to prevent subsequently injected foam insulation from leaking to the interior of the cabinet. To allow for misalignment between the linear and the outer case, the opposite end of the drain funnel passes through an oversized hole in the outer case of the refrigerator.

Abstract: An evaporator is made up of a plurality of heat exchange modules each in turn made up of an elongated lower header 30 of non rectangular cross section and having a plurality of tubes 40 mounted by the header 30 along its length and extending therefrom in side by side relation. The tubes 40, in the direction transversely of the header 30 are stacked and assembled together with the lower headers in sealing abutment with each other and defining upwardly opening channels 56. Sets of serpentine fins 44 can extend between adjacent tubes 40 in each module and/or between the plurality of modules.

Abstract: A dehumidifier is provided comprising a removable low profile receptacle for accumulating condensate generated by the dehumidifier, the receptacle defining a chamber for collecting the condensate and at least one opening for allowing condensate to enter the chamber. The receptacle further includes an integral pivoting bar for allowing the receptacle to pivot from a first position to a second position in response to an accumulation of a predetermined amount of condensate. A biased-open shutoff switch for operation of the dehumidifier components is also provided for actuation by upward movement of a portion of a perimeter edge of the receptacle. The perimeter edge portion of the receptacle contacts and closes the shutoff switch when the receptacle is located within the dehumidifier and the chamber is not filled with the predetermined amount of condensate.

Abstract: A floor pan for use in the cabinet of an evaporative cooler is formed with an elevated central platform which is surrounded by an endless upwardly opening trough for containing the operating water supply of the evaporative cooler. The floor pan is configured so that the endless trough is disposed below the wettable pads of the evaporative cooler so as to catch unevaporated water returning from the pads to the water supply, and the trough is sized so as to be as small as possible to facility periodic draining and replacement of the water supply and otherwise reduce water induced damage of the cooler.

Abstract: Vapors of chemicals or minerals in solution, and/or volatile liquids, emanating from a land surface (such as a sanitary landfill) are collected. A first generally cylindrical container encloses the volume of air above an area of land surface, and includes a top surface having an inverted cone shape with a downwardmost point formed by the cone apex. A second generally cylindrical container interfits with the top, inverted cone, first container. The second container is adapted to contain ice, or a like cooling solid or liquid. The second and first containers are of good heat conducting material so that the second container cools the top of the first container. Thus vapors emanating from the land surface condense on the top of the first container, roll down the interior surface thereof to the cone apex, and the condensate drips into a collecting vessel disposed within the first container, below the cone apex.

Abstract: An air conditioner in which a drain pan disposed under a heat exchanger can completely collect and exhaust liquid such as condensed liquid or hot liquid and air intaken from an air intake port is passed through a ventilation passage, thereby completely air conditioning in the corners and the vicinity of a floor surface, the heat exchanger for preferably exchanging heat in a large capacity can be installed in a conditioner body and the size of the conditioner can be still constructed in small size. Thus, the air conditioner can completely condition the corners and the position near a floor surface in the room.

Abstract: The electrically operated clutch controlling operation of the compressor is regulated by a damped pressure switch. The pressure switch has a diaphragm which moves in response to pressure variation to actuate the switch. The force acting on the diaphragm is opposed by spring force. The housing is provided with a damping chamber between the diaphragm chamber and the restricted passage in the inlet. The restricted passage is the clearance between the hole drilled in the metal insert and the wire fixed in the hole. The restriction is selected relative to the damping chamber so the switch will not cycle more than four times per minute when sensing pressure at the outlet of a finned coil evaporator in an automotive air conditioning system operating under light load.

Abstract: A method and device are disclosed for eliminating condensation on condensate drainage piping located in a warm attic-type atmosphere caused by cold condensate water emanating from the indoor section, including an air handler, of an air-conditioning system comprising an external shell; first and second connections from the external shell; flow restricting apparatus within the external shell operative to impede the flow of the cold condensate water; and a reservoir formed from the cold condensate water which has been warmed and deposited within the external shell, the reservoir being further heated by the warm attic-type atmosphere; and emptying the excess reservoir water into the condensate drainage piping at a temperature whereby the condensate drainage piping will be free from condensation.

Abstract: A heat exchange unit is disclosed which is capable of being mounted either in a vertical or horizontal position. A condensate pan including multiple drain openings each serving a particular position is additionally disclosed. A cover plate secures the condensate pan by providing a drain projection opening into which a projection from the condensate pan may extend. A drip pan for coacting with the condensate pan is provided when the unit is mounted in the horizontal position.

Abstract: A heat exchange unit is disclosed having a combination coupling retainer and support. This combination coupling retainer and support acts to both secure a suction line coupling and a liquid line coupling connected to the appropriate headers of the heat exchanger and to provide structural support for the heat exchange unit. The coupling retainer and support includes a suction line opening for securing the suction line coupling therein and a liquid line slot in an arcuate configuration adapted to secure the liquid line coupling. This combination retainer and support is capable of being used in various units with heat exchangers mounted at differing angles, the suction line coupling serving as a pivot point and the liquid line coupling being positioned within the liquid line slot to secure the various components.

Abstract: An air conditioner comprises a device body having first and second air channels, an evaporator disposed in the first air channel for cooling the air passing therethrough, a first drain tray disposed below the evaporator for receiving dew drops formed on the evaporator and falling therefrom and thus for containing the drain, and a second drain tray disposed below the first drain tray for receiving dew drops formed on the first drain tray and falling therefrom and the drain overflowing the first drain tray. The second air channel is defined between the first and second drain trays.

Abstract: An air cooling and water condensate removal panel has at least two interconnected capillary systems close to a plate having cooling means for removing heat from the plate. The first capillary system exists in a porous, thin outer layer having a very fine capillary structure which presents a cool, wettable surface upon which moisture in the air condenses. The outer layer is maintained cool by the cold plate. The condensate water soaks through the thin porous outer layer and is drawn into the interconnected second capillary system. The second capillary system is substantially coarser than the first system to cause the water to be drawn away more rapidly than the condensate can form upon the outer surface. The water in the coarser capillary system is drawn into a discharge pipe, preferably by employing a pump to maintain a mild vacuum in the pipe.

Abstract: The present invention provides a condensate guide arranged in the path of a flow of air through an A-coil heat exchanger including slabs oriented generally horizontally relative to the air flow. The condensate guide is positioned downstream of the heat exchanger so that condensate when blown from the surface of the heat exchanger by the air flow therethrough impinges on the guide thereby removing it from the path of air and directing it to an appropriate drain.

Abstract: An adjustable air deflector condensate directing tray and food receptacle shelf support cover for a refrigerator cabinet shelf. The cover includes side flanges, spaced to depend between shelf longitudinal openings, with the flanges having opposed trackways for receiving outwardly flared receptacle top flanges. The tray is releasably retained in the opposed trackways allowing same to initially protrude rearwardly of the removed shelf. Upon the cover and tray being assembled with the shelf and the shelf assembly being installed in the cabinet, tray stop members contact the cabinet rear wall to telescope the tray in the trackways thereby compensating for cabinet liner rear wall out of plane undulations providing a baffle for directing refrigerated air into the receptacle while condensate collected thereon is directed to the cabinet liner rear wall.

Abstract: An evaporator is made up of a plurality of heat exchange modules each in turn made up of an elongated lower header 30 of non rectangular cross section and having a plurality of tubes 40 mounted by the header 30 along its length and extending therefrom in side by side relation. The tubes 40, in the direction transversely of the header 30 are stacked and assembled together with the lower headers in sealing abutment with each other and defining upwardly opening channels 56. Sets of serpentine fins 44 can extend between adjacent tubes 40 in each module and/or between the plurality of modules.