121 |
Air conditioner |
US09295605 |
1999-04-22 |
US06272880B1 |
2001-08-14 |
Hiroshi Miki; Yasushi Fujiwara; Satoru Yoshimitsu; Akihito Matsumoto |
A heat-source-side space and two heat-use-side spaces are formed in a casing. A heat-source-side heat exchanger is contained in the heat-source-side space, and heat-use-side heat exchangers are individually contained in the heat-use-side spaces. The casing is formed with a plurality of suction ports for room air and a plurality of delivery ports for conditioned air. The suction ports and the delivery ports are individually connected to ducts communicating with rooms. The heat-source-side heat exchanger and the plurality of heat-use-side heat exchangers constitute refrigerant circuitry. |
122 |
Multistage condensing structure |
US95836 |
1998-06-11 |
US5946932A |
1999-09-07 |
Huai-Wei Wang |
A multistage condensing structure using a liquid dispensing means to transfer droplets of evaporative cooling liquid onto an air-cooled condenser, taking advantage of the conventional air-cooled condensing method and the evaporation method using a liquid coolant. To further increase the efficiency of the air conditioner, two or more condensing units can be arranged in tandem along the blowing direction of a common air blower. With two or more condensing units arranged in tandem, the contacting area between the evaporation surfaces and the air flow can be enlarged to increase the evaporation efficiency without significantly increasing the size of the air conditioner. The multistage condensing structure, with its continuous heat-exchange along the flow of the refrigerant in the coiled pipe, causes an increase in the subcooling condition in the refrigerant. This condensing structure can, therefore, achieve a much higher E.E.R. than the known method of air cooling. |
123 |
Automotive air conditioner having condenser and evaporator provided
within air duct |
US781047 |
1997-01-09 |
US5782102A |
1998-07-21 |
Kunio Iritani; Shigeo Numazawa; Kenichi Fujiwara; Yasushi Yamanaka; Akira Isaji; Nobunao Suzuki |
An automotive air conditioner which conditions air making use of radiation of heat of a condenser and absorption of heat of an evaporator effectively. The evaporator 207 and the condenser 203 are disposed in a duct 100. A bypass passageway 150 is provided sidewardly of the condenser 203 in the duct 100, and a flow rate of air bypassing the condenser 203 is controlled by pivotal motion of an air mixing damper 154. Another bypass passage is provided sidewardly of the evaporator 207 in the duct 100, and a flow rate of air bypassing the evaporator 207 is controlled by pivotal motion of a bypass damper 159. Air is conditioned to an optimum blown out air temperature by varying the cooling rate at the evaporator 207 and the heating rate at the condenser 203 and is blown out to a room of an automobile from spit holes 141, 142 and 143. An outside heat exchanger is provided outside the duct 100, and a flow of refrigerant is changed over suitably among the outside heat exchanger 202, the evaporator 207 and the condenser 203 to perform cooling operation, heating operation, dehumidifying operation, dehumidifying heating operation and defrosting operation. |
124 |
Refrigeration system with heat reclaim and method of operation |
US559997 |
1995-11-17 |
US5673567A |
1997-10-07 |
Serge Dube |
A refrigeration system with heat reclaim and a method of operation to reclaim and put to use substantially all of the heat extracted from the compressor discharge gas. A valve connects the discharge of the compressors to either a remote air-cooled condenser which is located outside a building or to at least one heat reclaim coil located inside the building so that the heat in the hot gas is recovered and used to assist in the heating of a building. The heat reclaim coil could be incorporated in a heat exchanger to heat liquid such as to provide hot water. A pressure control device monitors the pressure in the refrigerant at an outlet of the heat reclaim coil and controls the pressure by directing the refrigerant from the outlet of the reclaim coil through valves whereby to reintroduce the liquid in the system to feed the evaporators or to bypass the refrigerant into the remote air-cooled condenser to drop the pressure thereof prior to reintroducing it into the system. |
125 |
Heat pump type air conditioner for automotive vehicle |
US995096 |
1992-12-22 |
US5404729A |
1995-04-11 |
Takayoshi Matsuoka; Yasuhiro Masumura; Toshio Ohashi |
A heat pump type air conditioner for an automotive vehicle has a compressor to which an outer heat exchanger and a first inner heat exchanger are connected through a three-way valve. The outer heat exchanger is connected at its refrigerant outlet to the first inner heat exchanger through one-way valve. The refrigerant outlet of the first inner heat exchanger is connected to a second inner heat exchanger through an expansion valve. The refrigerant outlet of the second inner heat exchanger is connected to the compressor. The second and first inner heat exchangers are disposed in turn downstream of a blower for generating an air flow for air-conditioning a passenger compartment of the vehicle. During a cooling drive the three-way valve is set to lead the refrigerant from the compressor to the outer heat exchanger. During a heating drive the three-way valve is set to direct the refrigerant from the compressor to the first inner heat exchanger while bypassing the outer heat exchanger. As a result, the air-conditioning capacity of the air conditioner is improved without changing the direction of refrigerant flow to the cooling and heating drive. |
126 |
Spacecraft adsorption thermal storage device using a vapor compression
heat pump |
US648828 |
1991-02-01 |
US5142884A |
1992-09-01 |
Robert P. Scaringe; Clyde F. Parrish; Lawrence R. Grzyll |
A vapor compression heat pump system and method employs thermal storage for adsorption of excess refrigerant under peak thermal load conditions, particularly for spacecraft use. The system can utilize a single compressor and optionally the adsorption bed in a radiator or dual compressors in which one compressor can always handle the base load and the other compressor is used for peak loads and for desorbing and cooling the adsorption bed. |
127 |
Refrigerating apparatus |
US498962 |
1983-05-27 |
US4516407A |
1985-05-14 |
Shin Watabe |
An improved refrigerating apparatus including a compressor, air cooling type condensers, an expansion valve and an evaporator which are connected in series one after another in the refrigerating system, is disclosed, wherein the improvement consists in that the air cooling type condensers comprise an upstream air cooling type condenser and a downstream air cooling type condenser which are separately arranged in the refrigerating system and a water cooling type which condenser is disposed between both the upstream and downstream air cooling type condensers. Owing to the arrangement of the refrigerating apparatus in accordance with the invention, reduced space required for mounting the refrigerating apparatus, and decreased volume of refrigerant required for operating the refrigerating apparatus are assured. |
128 |
System for vaporizing carbon dioxide utilizing the heat by-product of
the refrigeration system as a heat source |
US966273 |
1978-12-04 |
US4240267A |
1980-12-23 |
Harold L. Shaw |
The present invention is directed to a carbonation and refrigeration system wherein the heat of the refrigerant output side of the refrigeration compressor is utilized to vaporize liquid carbon dioxide into CO.sub.2 gas which is introduced into a liquid product. The carbonation and refrigeration system successfully utilizes the heat of the refrigerant to vaporize the CO.sub.2 liquid regardless of the cooling demand of the system caused by seasonal temperature variations. For example during the winter months when the cooling demand is as low as 10% of the cooling demand in the summer, the carbonation and refrigeration system operates effectively to vaporize the CO.sub.2 liquid by means of a heat exchanger and a desuperheater which are connected in communication with the superheated vapor emerging from the output side of a refrigeration compressor. In addition, the carbonation and refrigeration system of the present invention cools more efficiently by extracting some of the heat from the condensed refrigerant entering the receiver of the refrigeration system. In this manner, the refrigeration compressor can operate more efficiently. |
129 |
Heat-pump system |
US14612825 |
2015-02-03 |
US10012419B2 |
2018-07-03 |
Hojong Jeong; Song Choi; Minhwan Choi |
Provided is a heat-pump system including a plurality of compressors, wherein the plurality of compressors includes a first compressor and a second compressor that compress refrigerant, an oil separator provided on a discharge side of the plurality of compressors to separate oil mixed with refrigerant compressed by the plurality of compressors, an oil separation pipe extended from the oil separator to allow the plurality of compressors to recover oil, and a compressor side oil balance pipe extended from the second compressor to allow the first compressor to recover oil stored in the second compressor. |
130 |
Air-Cooled Ammonia Refrigeration Systems and Methods |
US15873654 |
2018-01-17 |
US20180142926A1 |
2018-05-24 |
Steven Kent Baker; Marcos Rente Braz |
In some embodiments, an air-cooled ammonia refrigeration system comprises: a plurality of air-cooled condensers, each having a heat exchanger and at least one axial fan and having a first operating state capable of condensing vaporous ammonia to form liquid ammonia; an evaporator coupled to the air-cooled condenser; a subcooler positioned between the air-cooled condenser and the evaporator; a compressor coupled to the evaporator; an oil cooler coupled to the compressor; and a plurality of valves coupled to the plurality of air-cooled condensers and having a first configuration corresponding to the first operating state of the plurality of air-cooled condensers, and a second configuration corresponding to a second operating state of one or more of the plurality of air-cooled condensers such that the one or more of the plurality of air-cooled condensers functions as an evaporator capable of evaporating liquid ammonia to form vaporous ammonia. |
131 |
Tandem compressor refrigeration system and a method of using the same |
US14264696 |
2014-04-29 |
US09951984B2 |
2018-04-24 |
James J. Del Toro; James E. Harris; Marco A Quiroz; Benjamen D. Baker; Andrew M Ramser |
A refrigeration system including a first compressor and a second compressor, operating in tandem, wherein the first compressor includes a compression capacity different than the compression capacity of the second compressor. A method for operating a refrigeration system including a first compressor and a second compressor operating in tandem; wherein the first compressor comprises a first compression capacity and the second compressor comprises a second compression capacity larger than the first compression capacity the method comprising the steps of: determining a cooling demand; operating the first compressor in a first stage of cooling; operating the second compressor in a second stage of cooling; and operating the first compressor and the second compressor in a third stage of cooling. |
132 |
Apparatus and method for hybrid water heating and air cooling and control thereof |
US14476654 |
2014-09-03 |
US09945587B2 |
2018-04-17 |
Walter R. Lowrimore; Robert L. Long; Scott D. Winters; Randy W. Foster |
A system for conditioning air circulated from an interior of a building includes a refrigerant path, an air-cooled condenser in the refrigerant path, a water-cooled condenser in the refrigerant path that transfers heat from refrigerant in the refrigerant path to the building water, an evaporator in the refrigerant path, and a control system. The control system moves the system between operation of the air-cooled condenser and the water-cooled condenser based upon predetermined system conditions. |
133 |
REFRIGERATOR |
US15545576 |
2016-01-21 |
US20180010825A1 |
2018-01-11 |
Kyeongyun KIM; Sunam CHAE; Kyungseok KIM |
A refrigerator includes a first compressor configured to compress first refrigerant, a first condenser configured to condense the compressed first refrigerant, a first expansion valve configured to reduce a temperature and a pressure of the condensed first refrigerant, a first evaporator configured to evaporate the first refrigerant having passed through the first expansion valve, a second compressor configured to compress second refrigerant, a second condenser configured to condense the compressed second refrigerant, a second expansion valve configured to reduce a temperature and a pressure of the condensed second refrigerant, a second evaporator configured to evaporate the second refrigerant having passed through the second expansion valve, a first heat exchanger arranged after and connected to the first expansion valve, and a second heat exchanger arranged after and connected to the second expansion valve. The first heat exchanger and the second heat exchanger are configured to exchange heat with each other. |
134 |
Method for matching refrigeration load to compressor capacity |
US14646183 |
2013-11-18 |
US09719700B2 |
2017-08-01 |
Jans Prins; Frede Schmidt; Torben Green |
A method for controlling operation of a refrigeration system (1), including one or more refrigeration entities (4), is disclosed. Each entity controller (7) obtains a measure for an error value between the measured value of a compressor control parameter and a setpoint value (8) for the compressor control parameter, and each entity controller (7) adjusts a refrigeration load of the corresponding refrigeration entity (4) to correspond to a cooling capacity of the compressor(s) (2), and in accordance with the obtained measure for an error value. |
135 |
HEAT PUMP SYSTEM FOR VEHICLE AND METHOD OF CONTROLLING THE SAME |
US15441018 |
2017-02-23 |
US20170158022A1 |
2017-06-08 |
Jae Yeon KIM |
A heat pump system for a vehicle may include a cooling apparatus that supplies and circulates coolant to a motor and an electrical equipment through a cooling line, wherein the cooling apparatus includes a radiator, a cooling fan that ventilates wind to the radiator, and a water pump connected to the cooling line, and an air conditioner apparatus connected through a refrigerant line, wherein the air conditioner apparatus includes a water-cooled condenser connected to the cooling line to change a temperature of the coolant using a waste heat that has occurred in the motor and the electrical equipment according to each mode of the vehicle and that is connected to the refrigerant line to enable an injected refrigerant in the refrigerant line to exchange a heat with the coolant at the inside thereof, and an air-cooled condenser connected in series to the water-cooled condenser through the refrigerant line. |
136 |
Systems and methods implementing robust air conditioning systems configured to utilize thermal energy storage to maintain a low temperature for a target space |
US14919288 |
2015-10-21 |
US09441861B2 |
2016-09-13 |
Anthony Diamond; Amrit Robbins |
Systems and methods in accordance with embodiments of the invention implement air conditioning systems that are operable to establish/maintain a desired temperature for a target space and simultaneously establish/maintain a temperature lower than the desired temperature for the target space for an included cold thermal energy storage unit. In one embodiment, an air conditioning system includes: a condensing unit; a liquid pressurizer and distributor ensemble; a cold thermal energy storage unit; a target space; and a suction gas/equalizer; where the listed components are operatively connected by piping such that vapor compression cycles can be simultaneously implemented that result in the cooling of the cold thermal energy storage unit and the target space; and the air conditioning system is configured such that the simultaneous implementation of vapor compression cycles results in cooling the cold thermal energy storage unit to a greater extent relative to the target space. |
137 |
Air conditioner |
US13426924 |
2012-03-22 |
US09416993B2 |
2016-08-16 |
Youngtaek Hong |
An air conditioner is provided. The air conditioner may include at least one indoor device and an outdoor device connected to the at least one indoor device. The outdoor device may include an outdoor heat exchanger including a plurality of heat exchange parts, a plurality of outdoor expansion parts corresponding to the plurality of heat exchange parts, a pass variable tube that varies refrigerant flow in the outdoor heat exchanger, and a pass variable valve provided in the pass variable tube. The heat exchange parts may include a first heat exchange part. The first heat exchange part may be connected to a manifold that distributes refrigerant flow in a heating operation. The manifold may be connected to a plurality of capillaries connected to the first outdoor expansion part. The pass variable tube may be connected to the manifold. |
138 |
APPARATUS AND METHOD FOR HYBRID WATER HEATING AND AIR COOLING AND CONTROL THEREOF |
US14476647 |
2014-09-03 |
US20160061508A1 |
2016-03-03 |
Walter R. Lowrimore; Robert L. Long; Scott D. Winters; Randy W. Foster |
A system for conditioning air circulated from an interior of a building includes a refrigerant path, an air-cooled condenser in the refrigerant path, a water-cooled condenser in the refrigerant path that transfers heat from refrigerant in the refrigerant path to the building water, an evaporator in the refrigerant path, and a control system. The control system moves the system between operation of the air-cooled condenser and the water-cooled condenser based upon predetermined system conditions. |
139 |
APPARATUS AND METHOD FOR HYBRID WATER HEATING AND AIR COOLING AND CONTROL THEREOF |
US14476665 |
2014-09-03 |
US20160061462A1 |
2016-03-03 |
Walter R. Lowrimore; Robert L. Long; Scott D. Winters; Randy W. Foster |
A system for conditioning air circulated from an interior of a building includes a refrigerant path, an air-cooled condenser in the refrigerant path, a water-cooled condenser in the refrigerant path that transfers heat from refrigerant in the refrigerant path to the building water, an evaporator in the refrigerant path, and a control system. The control system moves the system between operation of the air-cooled condenser and the water-cooled condenser based upon predetermined system conditions. |
140 |
Heat-Pump System |
US14612825 |
2015-02-03 |
US20150219372A1 |
2015-08-06 |
Hojong Jeong; Song Choi; Minhwan Choi |
Provided is a heat-pump system including a plurality of compressors, wherein the plurality of compressors includes a first compressor and a second compressor that compress refrigerant, an oil separator provided on a discharge side of the plurality of compressors to separate oil mixed with refrigerant compressed by the plurality of compressors, an oil separation pipe extended from the oil separator to allow the plurality of compressors to recover oil, and a compressor side oil balance pipe extended from the second compressor to allow the first compressor to recover oil stored in the second compressor. |