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| Number | Title | Issue Date |
| 7263850 | Indoor unit for air conditioner Disclosed is an indoor unit for an air conditioner to solve drain problem of condensed water. The indoor unit includes: a lower frame provided with a suction inlet through which exterior air is inhaled; a middle frame spaced upward apart from the lower frame by a pr... | 09/04/2007 |
| 7240505 | Cogeneration system A cogeneration system including a heat pump type air conditioner including an outdoor heat exchanger and an outdoor heat exchanger bypass conduit, and a cogeneration unit including a second outdoor heat exchanger, an outdoor heat exchanger bypass conduit, second out... | 07/10/2007 |
| 7216698 | Air-conditioning system An air-conditioning system for a building includes a hot water distribution circuit, a cold water distribution circuit, and several terminal air conditioning units. Each of the terminal air conditioning units includes a fan blowing air in a space of the building, a ... | 05/15/2007 |
| 7089087 | Limited access comfort control A data collection system allows occupants in one or more locations to provide indications as to their respective levels of comfort. The indications as to comfort level are preferably provided through personal computers in these locations. Each computer is programmed... | 08/08/2006 |
| 7065979 | Refrigeration system A refrigeration system includes a first cooling system having a refrigerant in thermal communication with a heat exchanger device to provide a first cooling source. A second cooling system has a coolant in thermal communication with the heat exchanger device and a r... | 06/27/2006 |
| 6993918 | Thermal control systems for process tools requiring operation over wide temperature ranges A system and method for maintaining the temperature of a thermal transfer fluid at a selectable level within a wide temperature range, so as to operate a process tool in a chosen mode employing at least two cascaded stages, each operating with a different fluid in a... | 02/07/2006 |
| 6959556 | Stirling refrigeration system A Stirling refrigeration system (1) comprises two Stirling refrigeration units (4a, 4b) incorporating respective working gas end (WGE) heat exchangers (35a, 35b) and radiators (65a, 65 | 11/01/2005 |
| 6957696 | Combination radiant and forced air climate control system A method and controller for controlling the operation of a zoned climate control system including a primary heat source, a secondary heat source, a cooling unit, and a humidifier unit. The controller is configured to receive both heating demand signals and cooling d... | 10/25/2005 |
| 6742349 | Equipment sensing system and equipment control device Data is transmitted to a main control device via sensing means such as temperature sensors, each having a memory means in which the ID code is stored, and via transmitting/receiving means such as switching elements. There is a stand-by period in the operation of the... | 06/01/2004 |
| 6655163 | Dual evaporator air conditioning system and method of use A dual evaporator air conditioning system and method for use therewith to cool air in front and rear portions of a cabin. The dual evaporator air conditioning system includes primary and auxiliary HVAC units to cool the air in the front and rear portions ... | 12/02/2003 |
| 6126080 | Air conditioner In an air conditioner including an outdoor unit and plural indoor units, the outdoor unit is provided with an indoor unit operation setting mechanism for setting the driving operation of the indoor units, and the indoor unit operation setting mechanism is... | 10/03/2000 |
| 6125640 | Method of controlling a system having multiple air conditioner units A method of controlling a system with multiple air conditioner units having an outdoor machine and a plurality of indoor machines, which detects different driving modes input to each indoor machine, compares an outdoor temperature with first and second pr... | 10/03/2000 |
| 6102114 | Multi-room air conditioning system A multi-room air conditioning system includes an outdoor unit and a plurality of indoor units connected in parallel to the outdoor unit. A compressor frequency and combustion control calculator reads a load level for each indoor unit from a load coefficie... | 08/15/2000 |
| 5944098 | Zone control for HVAC system A control assembly for a HVAC system serving a plurality of zones within a structure, having ducting including a damper situated in an outlet of the ducting leading to each zone, a biasing element biasing the damper in a normally open position, and a moto... | 08/31/1999 |
| 5720179 | Methods and apparatus for controlling the temperatures of a plurality of rooms The temperatures of a plurality of rooms are controlled by a refrigerant cycle which enables a user to select desired room temperatures and one of the following operating modes: (i) supplying hot refrigerant to the indoor heat exchangers of all rooms, (ii... | 02/24/1998 |
| 5607013 | Cogeneration system A cogeneration system includes a gas engine generator acting as private power generating equipment for generating power to be supplied to private electricity consuming equipment, and a source-side heat exchanger connected to the gas engine generator throu... | 03/04/1997 |
| 5383336 | Automatic control address setting type distributively arranged air conditioner group apparatus A distributively arranged air conditioner group apparatus includes plural groups of air conditioners distributively arranged at remote locations wherein each group consists of a plurality of units on the heat source side and a plurality of units on the ut... | 01/24/1995 |
| 5343935 | Multiple type air conditioning apparatus A multiple type air conditioning apparatus includes a refrigerant supply unit having a variable capacity compressor, at least two internal air conditioning units each having an internal heat-exchanger and a fan device, the internal heat-exchangers of the ... | 09/06/1994 |
| 5344069 | Air conditioning apparatus for distributing primarily-conditioned air to rooms Primarily-conditioned air is discharged from a heat source, and distributed into a plurality of rooms through a duct. The duct has a plurality of air passages connected to the rooms, and a damper is provided in each air passage for adjusting the flow of t... | 09/06/1994 |
| 5265436 | Control apparatus for air-conditioners Multi-purpose indoor units and multi-purpose outdoor units are parallel-connected with each other by refrigerant pipes, and an operating capacity is obtained on the basis of the sum of the demanded capacities of the indoor units and on the basis of the co... | 11/30/1993 |
| 5156203 | Air conditioning system The present invention relates to air conditioning systems and more particularly to an air conditioning system which provides air conditioning in each of a plurality of spaces. The air conditioning system according to the present invention divides a space ... | 10/20/1992 |
| 4812997 | Control apparatus for an air conditioning system A control apparatus for an air conditioning system has an outdoor unit with a compressor, a condenser and a plurality of motorized valves installed to a plurality of branch pipings. A plurality of indoor units having, a plurality of indoor thermoswitches,... | 03/14/1989 |
| 4773472 | Control device for a refrigerating apparatus of a vending machine A temperature control device is disclosed for use in a vending machine having a plurality of storage chambers. The temperature control device includes a refrigerating apparatus provided with a plurality of evaporators which are connected in parallel and d... | 09/27/1988 |
| 4766735 | Inverter-aided multisystem air conditioner with control functions of refrigerant distribution and superheating states A single outdoor unit has at least an inverter circuit, a compressor motor, a variable capacity compressor, and an outdoor heat exchanger. A plurality of indoor units each have at least an indoor heat exchanger and an air-conditioning load detector. A dis... | 08/30/1988 |
| 4522253 | Water-source heat pump system A heating and cooling system for a building having a number of separately-controlled zone heat pumps includes a circulation conduit for heating or cooling a heat transfer fluid circulated throughout the system, and individual heat pumps for each of the co... | 06/11/1985 |
| 4462460 | Modular air conditioning apparatus An improved modular air conditioning apparatus utilizing heat pump assemblies and capable of heating or cooling adjacent room areas separated by a common wall partition. The apparatus comprises a first housing compartment and a second housing compartment ... | 07/31/1984 |
| 4335320 | Multi-zone energy supply controller A controller for the power supply system of a building structure divided into multiple zones provides a time-programmer and a load shedder for controlling the availability of separate heating, ventilation, and air-conditioning apparatus for individual zon... | 06/15/1982 |
| 4307576 | Air conditioning system having a plurality of indoor units An air conditioning system comprises an outdoor unit and a plurality of indoor units, a plurality of delivery conduits for supplying working fluid from a variable capacity energy source located in the outdoor unit to the indoor units, and a plurality of c... | 12/29/1981 |
| 4122893 | Air conditioning system An air conditioning system, particularly well suited for use in a multi-zoned building, includes an air conditioning unit for each zone. These air conditioning units can be either all reversible cycle air cooling and heating units or a mix of reversible c... | 10/31/1978 |
