Abstract: This document describes a high efficiency dehumidification system (HEDS) and method of operating the same. The HEDS systems and physical implementations can include a variety of equipment, such as fans, fluid-conveying coils, tubing and pipes, heat transfer coils, vents, louvers, dampers, valves, fluid chillers, fluid heaters, and/or the like. Any of the implementations described herein can also include controls and logic, responsive to one or more sensors or other input devices, for controlling the equipment for each implementation described herein. The HEDS system utilizes heat transfer between the fluid within the fluid-conveying coils and air passing over the coils to convert humid air into dehumidified air.
Abstract: A universal air handler unit includes a blower and evaporator juxtaposed one another within a compact, weather resistant cabinet adapted for outdoor installation. Ports for cool and return air ducts disposed on one side of the cabinet couple directly to the blower and evaporator respectively. Return air drawn by the blower into the cabinet passes across the evaporator core, then through the blower and back out through the adjacent cool air duct. Coolant lines couple to a stand-alone condenser/compressor unit. In a particular embodiment, an adapter enables stacking the condenser/compressor unit atop the cabinet to reduce the overall footprint of the combination. In another embodiment, a manifold adapted to couple to the cool and return air ducts may be installed in various locations, the air handler unit slideably coupling to the manifold during installation, and easily decoupling and reecoupling for transportation and maintenance.
Abstract: A refrigerator includes a first refrigeration cycle unit that is configured to circulate a first refrigerant and that includes a first compressor, a first condenser, a first expansion device, and a first evaporator, a second refrigeration cycle unit that is configured to circulate a second refrigerant and that includes a second compressor, a second condenser, a second expansion device, and a second evaporator, a first valve unit installed at an outlet side of the first compressor, and a first hot gas path configured to extend from the first valve unit to the second evaporator and configured to supply the first refrigerant to the second evaporator.
Abstract: A compressor includes an inlet and the inlet includes a flange and an impeller eye. The flange is connected to a suction line that transfers a refrigerant into the compressor via the impeller eye. The refrigerant flows into the compressor with an amount of swirl and a pressure loss. The suction line includes a geometry that includes a constantly decreasing cross-sectional area in a direction towards the compressor. The geometry of the suction line is configured to reduce the amount of swirl and the pressure loss.
March 23, 2018
Date of Patent:
June 1, 2021
Johnson Controls Technology Company
Florin V. Iancu, Justin P. Kauffman, Jeb W. Schreiber, Chenggang Wu, Steven Wang, John Trevino, Jr.
Abstract: An air conditioner includes a plurality of heat exchangers provided to form an internal refrigerant flow path of an outdoor heat exchanger in multiple stages, a bypass pipe configured to branch refrigerant discharged from a compressor and to guide the refrigerant to the plurality of heat exchangers, flow pipes branched from the bypass pipe and extending to refrigerant pipes provided in the plurality of heat exchangers and overlap pipes branched from a flow pipe connected to any one of the plurality of heat exchangers and extending to a flow pipe connected to another heat exchanger.
Abstract: A method and system for circulating combined cooling, heating and power with a jet cooling device. An outlet of a working medium pump which is used to pressurize liquid working medium is connected to an inlet of a heater. An outlet of the heater is connected to an inlet of an expansion component. An outlet of the expansion component is connected to an inlet of a cooler. An outlet of the cooler is connected to a primary inlet of a jetting device. Primary outlets of the jetting device are respectively connected to an inlet of the working medium pump and an inlet of a throttle valve. An outlet of the throttle valve is connected to an inlet of an evaporator. An outlet of the evaporator and a gaseous outlet of the jetting device are both connected to an inlet of a pressurization component.
March 5, 2020
Date of Patent:
May 11, 2021
INSTITUTE OF MECHANICS, CHINESE ACADEMY OF SCIENCES
LiSheng Pan, XiaoLin Wei, Yuan Yao, WeiXiu Shi
Abstract: A refrigerator appliance and ice dispenser is provided herein. The refrigerator appliance may include a cabinet, an ice maker attached to the cabinet, a dispenser recess defined on the refrigerator appliance, and a dispenser conduit disposed within the dispenser recess. The dispenser conduit may include a chute wall. The chute wall may define an ice passage, one or more fluid inlets, a manifold channel, and one or more fluid outlets. A fluid inlet may be positioned radially outward from the ice passage in fluid communication with a fluid source selectively supplying a fluid flow thereto. The manifold channel may extend within the chute wall about at least a portion of the ice passage. The manifold channel may be in downstream fluid communication with the fluid inlet. A fluid outlet may be defined through the chute wall in downstream fluid communication with the manifold channel.
Abstract: An air conditioning device for a vehicle includes a first flow path through which air subject to dehumidification flows, a second flow path through which air for recovery flows, a desiccant part and a controller. The desiccant part is fluidly communicated with the first and second flow paths, and configured to adsorb moisture contained in the air subject to dehumidification, and to discharge the moisture to the air for recovery. The controller is configured to control an air volume of the air subject to dehumidification and an air volume of the air for recovery so that the air volume of the air for recovery is less than the air volume of the air subject to dehumidification, after the air volume of the air for recovery reaches a prescribed air volume for achieving a target dehumidification amount of the air subject to dehumidification.
Abstract: An air-conditioner system includes a vacuum chamber with a mist maker in communication with water to create mist within the vacuum chamber; a vacuum pump to maintain a vacuum within the vacuum chamber; a discharge outlet extending from the vacuum pump to discharge vapor; a nozzle attached to a water source; a circulating pump in fluid communication with the water within the vacuum chamber via an outlet; a cooling coil connected to the circulating pump to direct water from the circulating pump to the vacuum chamber; and an insulated chamber with a blower to blow cooled air to a building; the cooled air is cooled via the multi-row cooling coil positioned within the insulated chamber. Besides the cooling system, this invention integrates itself very well with the heating system as shown in schematics.
Abstract: A method of determining loss of refrigerant charge in a heating, ventilation, and air conditioning (HVAC) system. The method includes receiving, using a controller, a plurality of temperature values from a plurality of temperature sensors placed at multiple locations within the HVAC system and calculating, using the controller using the plurality of temperature values, a plurality of temperature-dependent values. The method further includes determining, using the controller, whether a first temperature-dependent value of the plurality of temperature-dependent values is above a first predetermined temperature value and responsive to a determination that the first temperature-dependent value is above the first predetermined temperature value, transmitting, using the controller to a user interface, a notification indicating that the HVAC system is operating with low refrigerant charge.
Abstract: A heat source unit for a refrigeration apparatus includes: a refrigerant circuit including a shut-off valve, a compressor, a heat exchanger, and a first refrigerant pipe positioned between the shut-off valve and the compressor; a fan that sends air to the heat exchanger; a casing that includes a side panel and that accommodates the refrigerant circuit and the fan; and a partitioning panel that partitions an internal space of the casing into a first space on the side panel side where the compressor is disposed, and a second space where the fan is disposed. The fan blows the air that has passed through the heat exchanger out to a front-surface side of the casing. The compressor, the shut-off valve, and the side panel are disposed in the stated order as the compressor, the shut-off valve, and the side panel as seen in a front view.
Abstract: A machine for making food products in liquid or semi-liquid form, including: a container for containing a basic product; a container for processing the basic product flowing out of the containing container; a stirring element mounted inside the processing container; a thermal treatment system associated with the processing container; a unit for driving and controlling the variables correlated with the aforementioned devices and systems; a user interface provided with operator controls and connected to the drive and control unit. The user interface is configured to allow a remote service request to be sent by activating an operator control.
Abstract: A moisture permeable device and refrigerator having the same; the moisture permeable device includes a corresponding first surface (110) and second surface (111); at least parts of the first surface (110) and the second surface (111) of the moisture permeable device define a hollow cavity (301); through-holes are provided at regions of the first surface (110) and the second surface (111) of the moisture permeable device defining the cavity (301); and regenerated cellulose is accommodated in the cavity (301). A manufacturing method of the moisture permeable device comprises pouring a regenerated cellulose slurry with a tackifier added thereto into the cavity (301) to form a moisture permeable film, thus allowing omission of an assembling procedure and a non-woven support.
Abstract: The present invention refers to a hybrid thermal apparatus comprising at least one heat exchanger and at least one heat source and/or heat sink. The thermal apparatus according to the invention is formed as a combination of a first thermal apparatus (1, 15) based on a vapour-compression principle and comprising a first medium for heat transfer, and of a second thermal apparatus (2, 16) based on an elastocaloric principle and comprising a second medium for heat transfer. Said thermal apparatuses (1, 15; 2, 16) have at least one deformable heat exchanger (3, 21) of elastocaloric material in common.
Abstract: An evaporative HVAC apparatus is disclosed. In at least one embodiment, the apparatus provides an at least one housing having an inner surface that defines a substantially tubular-shaped air passage extending therethrough. An absorbent wicking layer is formed immediately adjacent to at least a portion of the inner surface of the housing, and a thermal layer is formed immediately adjacent to an inner surface of the wicking layer. The housing also provides an at least one fluid inlet aperture through which a fluid line extends a distance into the housing so as to be in fluid communication with the wicking layer. Thus, a fluid is selectively delivered to the wicking layer through the fluid line which, in turn, permeates the thermal layer and evaporates into the air located immediately adjacent an exposed inner surface of the thermal layer, thereby affecting the temperature of the air moving through the air passage.
Abstract: System includes a compressor having a compressor suction port and a compressor discharge port; a heat rejection heat exchanger fluidly coupled to the compressor discharge port; an expansion device fluidly coupled to an outlet of the heat rejection heat exchanger; a heat absorption heat exchanger fluidly coupled to the expansion device; a hot gas bypass line fluidly coupled to the compressor discharge port; an ejector comprising a motive port fluidly coupled to the hot gas bypass line, a suction port fluidly coupled to an outlet of the heat absorption heat exchanger and a discharge port fluidly coupled to the compressor suction port; a hot gas bypass valve positioned between the compressor discharge port and the motive port of the ejector; a flow control valve fluidly coupled to the outlet of the heat absorption heat exchanger, and fluidly coupled to the suction port of the ejector and the compressor suction port.
Abstract: A refrigeration system including a primary stage and a secondary stage, the primary and secondary stages being thermally coupled to one another via a first heat exchanger. The primary stage including a closed-loop CO2 refrigeration system having a primary evaporator located in a region to be cooled, a primary compressor and a water-cooled primary condenser that forms at least a part of the first heat exchanger and being water-cooled by the secondary stage. The secondary stage including a closed-loop water-based cooling system having the first heat exchanger, a pump adapted to pump cooling water around the secondary stage, and a heat sink. Temperature at the (final) heat sink of the system does not need to be maintained below the supercritical temperature of the refrigerant, thus the primary (CO2) stage is operated below its supercritical temperature-pressure regime at relatively high ambient temperatures.
Abstract: Compact membrane evaporative chillers, methods for cooling a process fluid (e.g., air) using a compact membrane evaporative chiller, and air conditioning systems and methods that include a compact membrane evaporative chiller are disclosed herein. Compact membrane evaporative chillers as disclosed herein can advantageously reduce or eliminate power consumption needed to circulate a working fluid.
October 7, 2016
Date of Patent:
February 2, 2021
DAIS ANALYTIC CORPORATION
Brian Johnson, Lacy Aliff, Gary Rosenberg
Abstract: A refrigeration cycle apparatus includes a compressor, first and second heat exchangers, an expansion valve, a four-way valve, and a controller. The four-way valve is configured to switch a direction of flow of the refrigerant between a first direction and a second direction. The controller is configured to control the four-way valve to switch an operation from a defrosting operation in which the refrigerant flows in the second direction, to a heating operation in which the refrigerant flows in the first direction, to perform a heating preparation control for increasing a degree of superheat of the refrigerant output to the compressor from the second heat exchanger, and thereafter to start the heating operation.
Abstract: A door for a refrigerated merchandiser including a case that defines a product display area. The door includes a frame and a first glass pane coupled to the frame. The first glass pane has heat-absorbing glass and is configured to be positioned adjacent an ambient environment surrounding the refrigerated merchandiser to absorb radiation from the ambient environment. The door also includes a second glass pane coupled to the frame and configured to be positioned adjacent the product display area. The second glass pane includes a conductive coating. The door further includes a third glass pane positioned between and spaced from the first glass pane and the second glass pane, and has a low emissivity coating.