octimine technologies

Air conditioner patents

Laura HorcajadaLaura Horcajada

Air conditioner and air-conditioner indoor unit

An indoor unit for this air conditioner, which uses a flammable refrigerant, is provided with the following: a refrigeration-cycle structure comprising refrigerant piping and a heat exchanger inside which the flammable refrigerant is contained; and an electrical-discharge means that discharges into air drawn into the indoor unit. Said electrical-discharge means is disposed so as to discharge into air that is higher up than the refrigeration-cycle structure, thereby preventing ignition of the refrigerant due to discharges from the electrical-discharge means, resulting in a high level of safety.

Publication number: WO2013038670A1 | Search similar patents

Leak detection in heating, ventilating and air conditioning systems

The present invention relates to the effective leak detection of refrigerants by the addition of dyes from the general chemical class of naphthalimide fluorescent dyes in a refrigeration system where said refrigeration system employs alone, or in combination, a refrigerant in a hermetic system such as, but not limited to, chlorofluorocarbons (CFC), hydrochlorofluorocarbons (HCFC), hydrofluorocarbons (HFC) and any hydrogen, halogenated or ether derivatives of the methane, hydrogen, halogenated, ether or cyclic derivatives of either ethane, propane, butane, pentane, mixtures of HCFC, HFC, hydrocarbons, carbon dioxide and ammonia.Leakage is determined by inspection of the sealed system using a lamp having an emission wavelength from 300 to 480 nanometers providing an indication of any system leakage.This application is a continuation-in-part of my application entitled, "Leak Detection in Heating, Ventilating and Air Conditioning Systems Using an Environmentally Safe Material", U.S. Ser. No. 08/081,119, filed Jun. 25, 1993, and now U.S. Pat. No. 5,357,782 issued Oct. 25, 1994.

Publication number: US5421192A | Search similar patents

Hydrocarbon refrigerant and detergent composition

The hydrocarbon refrigerant and detergent composition is a hydrocarbon-based composition, which may be used as a refrigerant for air conditioners, refrigerators or the like, and which may also be used as a detergent for cleaning precision components, such as semiconductor chips, motherboards or the like. The hydrocarbon composition includes about 5.0% ethane, about 60.0% propane, about 5.0% isobutene and about 30.0% butane by volume.

Publication number: US2010320413A1 | Search similar patents

Hydrocarbon mixture refrigerant, freezing/refrigerating or air-conditioning system, freezing/refrigerating or air-conditioning method, and process for producing freezing/refrigerating or air-conditioning system

Substitute fluorocarbons (HCFC and HFC) for chlorofluorocarbons are replaced with a hydrocarbon refrigerant which is a natural refrigerant to render the elimination of chlorofluorocarbons with the hydrocarbon refrigerant as a natural refrigerant possible. Thus, the substitute fluorocarbons are diminished and energy saving in refrigerators or air conditioners is attained. A hydrocarbon mixture refrigerant is provided which contains propane and has a saturated vapor pressure at 7�C of 0.3-1 MPa and a saturated vapor pressure at 35�C of 0.6-2.2 MPa. It may further contain n-butane, isobutane, and ethane. The hydrocarbon mixture refrigerant preferably has a boiling point of -20�C or lower.

Publication number: WO2009081672A1 | Search similar patents

Hydrocarbon refrigerant and detergent composition

The hydrocarbon refrigerant and detergent composition is a hydrocarbon-based composition, which may be used as a refrigerant for air conditioners, refrigerators or the like, and which may also be used as a detergent for cleaning precision components, such as semiconductor chips, motherboards or the like. The hydrocarbon composition includes about 5.0% ethane, about 60.0% propane, about 5.0% isobutene and about 30.0% butane by volume.

Publication number: WO2012082110A1 | Search similar patents

Leak detection in heating ventilating and air conditioning systems using

The present invention rleates to the effective leak detection of refrigerants by the addition of dyes from the general chemical class of naphthalimide fluorescent dyes in a refrigeration system where said refrigeration system employs alone, or in combination, a refrigerant in a hermetic system such as, but not limited to, chlorofluorocarbons (CFC), hydrochlorofluorocarbons (HCFC), hydrofluorocarbons (HFC) and any hydrogen, halogenated or ether derivatives of the methane, hydrogen, halogenated, ether or cyclic derivatives of either ethane, propane, butane, pentane, mixtures of HCFC, HFC, hydrocarbons, carbon dioxide and ammonia.Leakage is determined by inspection of the sealed system using a lamp having an emission wavelength from 300 to 480 nanometers providing an indication of any system leakage.This application is a continuation-in-part of my application entitled, "Leak Detection in Heating, Ventilating and Air Conditioning Systems Using an Environmentally Safe Material", U.S. Ser. No. 08/081,119, filed Jun. 25, 1993, and now U.S. Pat. No. 5,357,782 issued Oct. 25, 1994.

Publication number: USRE35370E | Search similar patents

Evaporative coolant comprising hydrofluorocarbons

Evaporative coolants suitable for use as cold spray topical anesthetics containing hydrofluorocarbons and/or hydrochlorofluorocarbons, preferably 1,1,1,3,3-pentafluoropropane, either alone or in combination with other hydrofluorocarbon and/or hydrochlorofluorocarbon components. The invention includes a system for cooling skin using the coolant and a device for spraying the coolant, as well as a method of cooling or topically anesthetizing the skin comprising spraying such evaporative coolants thereon.

Publication number: EP1280514A1 | Search similar patents

Air conditioning system with built-in intermediate heat exchanger with two different types of refrigerants circulated

An air conditioning system in which each alternative refrigerant can be fully utilized so as to present as much as actual COP in comparison with the conventional HCFC22 and to achieve safe use as operating refrigerants. The air conditioning system includes: a first refrigerant circuit (A) in which a first refrigerant circulates, the first refrigerant circuit including: an indoor heat exchanger (1); and a fluid drive unit (3), connected to the indoor heat exchanger by way of a first piping, which drives the first refrigerant; a second refrigerant circuit (B) in which a second refrigerant circulates, the second refrigerant circuit including: a compressor (15) which compresses the second refrigerant; an expansion valve (17), connected to the compression means, for expanding the second refrigerant; and an outdoor heat exchanger (11) connected to the compressor and the expansion valve by way of a second piping; and an intermediate heat exchanger (5) for heat-exchanging between the first refrigerant in the first refrigerant circuit and the second refrigerant in the second refrigerant circuit.

Publication number: EP0675331A2 | Search similar patents

Cfc 12 replacement refrigerant

A refrigerant composition comprising a hydrofluorocarbon component including 1,1,1,2-tetrafluoroethane (HFC 134a), the composition further comprising an additive selected from a saturated hydrocarbon or mixture thereof boiling in the range -5 to +70� C.

Publication number: US6629419B1 | Search similar patents

Stable compositions of liquefied refrigerant and uv dye

A composition for the detection of leaks from a hermetic refrigerant system, such as refrigeration, heating, ventilation and air-conditioning systems, wherein a fluorescent dye or other visible indicator compound is combined with a suitable solvent, refrigeration system lubricant and a material suitable to function as a heat transfer agent or refrigerant in a hermetic system, as a permanent working composition. A method of detecting leaks in the hermetic system, based on the use of the composition, is also disclosed.

Publication number: US2004262567A1 | Search similar patents

Hydrocarbon composition, and refrigerant and detergent consisting thereof

A hydrocarbon composition prepared by combining methane, ethane, isopentane, normal pentane, hexane and heptane at an appropriate compounding ratio contains 75% or more by volume of propane, isobutane and normal butane, to have ignition temperature of 800�C and above. This composition is sate and economical in using as a refrigerant for use in air conditioners and refrigerators or a detergent for cleansing precision components such as semiconductor chips. The composition can be used independently without being combined with a conventional refrigerant such as CFC and HFC and does not destroy ozone, thus to contribute to the protection of the environment.

Publication number: EP1514915A1 | Search similar patents

Improvement to mixture of refrigerant gases based on hydrocarbons in order to obtain greater efficiency in air conditioning and refrigeration compression systems

The invention relates to the mixture of natural gases based on hydrocarbons (HC) which do not damage the ozone layer and which have an insignificant greenhouse effect, said gases being substitutes for CFC gases R-12 and R-22, whereby the R-12 substitute is known as HC-12 and the R-22 substitute is known as HC-22. The aforementioned mixtures, which generate a specific pressure/temperature curve, improve the efficiency of air conditioning and refrigeration compression systems. Specifically, since condensation pressures are lower, less pressure and, consequently, less work is required from the compressor, and hence power consumption is reduced. In addition, the refrigerant gases, based on HC mixtures, replace CFCs and HCFCs and are compatible with materials and elements used in commercial refrigeration and air conditioning systems. The resulting mixture generates a specific pressure/temperature curve with a range of plus or minus 5 %. Said refrigerant gases, based on HC mixtures, replace alternative refrigerants comprising mixtures containing large amounts of HFCs (hydrofluorocarbons) and are compatible with materials and elements used in commercial refrigeration and air conditioning systems.

Publication number: EP1826258A1 | Search similar patents

Refrigerant pipe washing method, air conditioner replacement method, and air conditioner

The present invention makes it possible to reduce the amount of refrigerant used and shorten the amount of time over which the new air conditioner must be run in a refrigerant pipe washing mode when an air conditioner that used a mineral-oil-based refrigerant oil is updated to or replaced with an air conditioner using an HFC refrigerant as the working refrigerant and the existing refrigerant piping is reused as is. With the present invention, when an air conditioner 1 that used a mineral-oil-based refrigerant oil is updated to or replaced with an air conditioner using an HFC refrigerant as the working refrigerant and the existing refrigerant piping (6, 7) is to be used as is, the residual refrigerant oil in the refrigerant piping (6, 7) is removed by washing the refrigerant piping (6, 7) using a cleaning agent comprising an HFC refrigerant containing at least 40 wt% of R32.

Publication number: EP1591730A1 | Search similar patents

Drop in refrigerant blend for mineral oil based systems

The present disclosure relates to refrigerants generally, and more specifically to nonflammable, non-ozone depleting mixtures of refrigerants that may be substituted for (HCFC R-22, R-407C, R-417A, R-502, R-402A, R-402B, R-404A, R-408A &R-507A) and usable in mineral oil systems. Among the most preferred embodiments of the present invention(s) are mixtures that are substitutes for these refrigerants, comprising about 35 to 65 weight percent R-125, and about 20 to 55 weight percent R-134a, and about 5 to 25 weight percent of R-143a and about 1 to 5 weight percent hydro component of (R-600 OR R-601) or combination, and about 2-10 weight percent of R-227ea the weight percentages of the components being weight percentages of the overall mixture.

Publication number: US8652348B1 | Search similar patents

Start your free patent search now.

+49 89 444 78663 0 | contact@octimine.com | © octimine technologies GmbH, 2017