39158 results about "Air conditioning" patented technology

An operation unit for a vehicle air conditioner includes a display device, a setting input portion of a control parameter of the air conditioner other than a set temperature, an obtaining portion configured to obtain a present set value of the control parameter, and an operating state identification portion configured to identify whether an air-conditioning operating state is in a plurality of predetermined operating states of the air conditioner. In the operation unit, a moving pattern of a pointer of the display device is changed according to the operating state of the air conditioner. For example, a pointer operation control portion can be configured to control an operation of a pointer driving motor such that the pointer moves on a dial of the display device at different moving speeds according to the air-conditioning operating state.

The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.

The invention discloses methods and apparatus based on tabular concepts which greatly simplify the configuration, maintenance and run-time operations of a broad range of electronic equipment control systems, including, but not limited to: (a) industrial controls, (b) supervisory control and data acquisition, such as heating, ventilation and air conditioning, and (c) home automation, including systems or stand-alone equipment, such as video recording devices. The tabular concepts of the invention are applied in three primary stages, namely (i) data input or configuration, including automated data population, (ii) generic operating rule application to tables of rules data variables, and (iii) English (or other) language translations of the current rule sets, for ease of verification. By each of these methods alone and through combination of all of these methods, the current invention makes the configuration and operation of automated equipment easily accessible to persons who do not have technical skills in either process control, automation, or software programming. Development of software for automatic control of equipment is also greatly simplified by these inventions.

A system and method of reducing consumption of electricity used to cool electronic computer data center, networking, and telecommunications equipment, and to reduce the incidence of thermal failure of electronic components, includes provision of one or more partitions to reduce the volume of the cooled environment supplying coldest possible cooled air from air conditioning systems to a chamber adjacent to racks containing the electronic components, preventing dilution of the supplied cooling airflow by warmer air from outside of the reduced volume environment, and controlling the delivery of cooling air flow through the reduced volume of the cooled environment.

Safety systems for vehicles, primarily passenger vehicles, comprising automated systems and methods for preventing entrapment of children, disabled, aged or infirm persons, or pets from being trapped in closed vehicles left in the sun, so that they will not suffocate from the heat. The invention is characterized by use of one or more systems to sense the occupancy state and temperature inside the vehicle passenger or load space, and provide one or more outputs which can selectively be employed to provide interior and exterior warning of a trapped passenger in a dangerously hot car to permit rescue, and / or to activate vehicle electro-mechanical systems to relieve the heat, such as rolling down windows, unlatching seat belts, unlocking doors, starting the car and / or fans or air conditioning systems and the like. The exterior warnings may be any suitable warning, such as sounding the car horn or alarm siren, flashing head, tail or special lights, placing an emergency call via a vehicle dedicated cell phone, CB radio, GPS system, or the like.

A vehicle seat with a backrest (16) that has a backrest cushion (18) and a rear backrest cover (20), and an air-handling device that is associated with the backrest (16) and is connected to an air distribution device (30, 32) in the seat. The rear backrest cover (20) is at least partially air permeable, and covers at least one passage (27) of the air-handling device (23). The air exchanged between the environment and the air-handling device (23) passes for the most part through the air-permeable regions of the backrest cover (20).

The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a tetrafluoropropene and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.

A pumping system for use in hydraulic fracturing or fracing of wells. The pumping system is generally self-contained on a transportable system, such as a trailer. The weight and configuration of the trailer must be sized to be hauled legally on United States roadways. The system components include a diesel generator with cooling radiator, a variable-frequency drive (VFD) with cooling system, an A / C induction motor and a high capacity pump. The system may also include a second generator to power other items, such as cooling fans, cooling pumps, lube pumps, lighting and electrical outlets and air conditioning units for cooling equipment. In some embodiments, the system includes single components, while other embodiments include redundant components.

Safety systems for vehicles, primarily passenger vehicles, comprising automated systems and methods for preventing entrapment of children, disabled, aged or infirm persons, or pets from being trapped in closed vehicles left in the sun, so that they will not suffocate from the heat. The invention is characterized by use of one or more systems to sense the occupancy state and temperature inside the vehicle passenger or load space, and provide one or more outputs which can selectively be employed to provide interior and exterior warning of a trapped passenger in a dangerously hot car to permit rescue, and / or to activate vehicle electro-mechanical systems to relieve the heat, such as rolling down windows, unlatching seat belts, unlocking doors, starting the car and / or fans or air conditioning systems and the like. The exterior warnings may be any suitable warning, such as sounding the car horn or alarm siren, flashing head, tail or special lights, placing an emergency call via a vehicle dedicated cell phone, CB radio, GPS system, or the like.

An air conditioning system thermostat includes a visual display and plural switch actuators, respectively backlit by an electroluminescent lamp and LED light sources mounted on a circuit board disposed in a thermostat housing. A control circuit causes at least one switch actuator to be illuminated continuously and the light sources for the display and the remaining switch actuators are illuminated in response to actuation of any one of the switch actuators. Switch contact elements mounted on the switch actuators and the circuit board provide advantageous positioning of the LED light sources for the switch actuators. An energy savings switch actuator allows the control circuit to directly assume setback temperature settings in response to a first actuation and a second actuation resets the thermostat to the initial user set temperature settings.

An air conditioning system for use in an over-the-road or off road vehicle is provided that allows operation during both engine on and engine off conditions. The system utilizes a variable speed, motor driven compressor controlled by an intelligent power generation management controller. This controller selects from one of the available sources of power on the vehicle to drive the compressor, and modulates the compressor speed and capacity based on operational parameters and source availability and depletion. The controller may also operate a coolant or air heater to provide heating to the interior compartments.

A method of controlling an installation formed by a plurality of home automation equipment items linked to a building, and handling therein, depending on the type of home automation equipment item, thermal and visual comfort functions, such as heating and air conditioning, natural ventilation, lighting, solar protection functions, and / or security functions, such as closure and / or alarm functions, the home automation equipment items communicating over one and the same home automation network. A programmable remote control implementing the control method.

A system and method of control of refrigerant air conditioning including a humidity input sensor, and a coolant velocity sensor, using a control system set with a set point whereby to maintain a maximum evaporator temperature set point varying to suit each heat and moisture load condition over a range of conditions compatible with high engineering standards of performance.

Systems and methods are described for a usage monitoring HVAC control system. A method, includes: providing a usage monitoring heating ventilation and air conditioning control system, the usage monitoring heating ventilation and air conditioning control system including a programmable digital thermostat with an on board memory, issuing personal identification numbers to each of a plurality of system users; associating each of the plurality of system users with at least one of a plurality of user types; storing the personal identification numbers in a first data structure in the on board memory; and linking each one of a plurality of entries in the first data structure by reference to at least one of a plurality of entries in a second data structure in the on board memory, the second data structure including a list of user types. A method, includes regulating user access to an interactive user interface of a programmable thermostat, each user identified by a personal identification number associated with a user type such as, for example, building owners, maintenance personnel, building tenants, and manufacturers.

In an air conditioning system for circulating cooled air to an enclosed space, a controller including a temperature sensor, a humidity sensor and a microcontroller for controlling the indoor fan or blower to prevent operation of same if a fan run-on mode is selected or continuous fan operation is selected and the humidity sensed in the enclosed space is greater than a predetermined amount. Continuous fan operation is allowed unless the humidity exceeds a user defined setpoint during an air cooling operating mode. If the humidity sensed is greater than the predetermined amount, the fan is operated only when the system is providing cooled air, such as when the system compressor is energized.

An air conditioning cooling apparatus and method which includes the steps of supplying cooling air generated from a cooling apparatus into an air passageway formed below a floor; guiding the cooling air within the air passageway into an equipment assembly disposed on the floor through an opening located in the floor; communicating the cooling air introduced into the equipment assembly into a plenum and introducing the air released from within the equipment into the plenum and communicating the released air through the cooling apparatus for cooling the released air. The method permits temperature differential between the air supplied to the air passageway and the air introduced into the plenum from the equipment assembly to be 45.degree. F. to substantially 40.degree. F. so as to reduce the power necessary for operating on the fan of the blowing apparatus. The equipment assembly utilizes an air flow control mechanism so as to substantially evenly distribute cooling air to the equipment.

A filtration medium is disclosed for use in air filters used in heating, ventilating and air conditioning systems. The medium contains at least one nanofiber layer of fibers having diameters less than 1 μm and at least one carrier layer, each nanofiber layer having a basis weight of at least about 2.5 g / m2, and up to about 25 g / m2. The medium has sufficient stiffness to be formed into a pleated configuration.

Air conditioning chiller operating efficiency is evaluated in response to chiller operating parameters input to a computing device which calculates separately the efficiencies of the condenser and evaporator components of the chiller. Additional efficiency calculations are performed to identify specific causes of inefficiency in the condenser and evaporator. The computing device also adjusts the efficiency calculations as appropriate to account for actual compressor current load conditions. The device determines whether chiller efficiency is being compromised by poor performance of one or more chiller components, calculates inefficiency values, estimates the cost of the inefficiency, identifies specific causes of the inefficiency, and suggests appropriate remedial actions to restore maximum efficiency of the chiller.

The invention discloses a fault operation control method of a DC (direct current) convertible frequency air conditioner, which comprises the following concrete steps of: (1) carrying out classification on a fault and protection of the existing DC convertible frequency air conditioner; and (2) judging whether an air conditioning unit has the fault or not, i.e. starting and operating the air conditioning unit, carrying out fault judgment in the operating process, continuously operating the air conditioning unit if the air conditioning unit has no fault, and carrying out shutdown or entering a corresponding fault operation mode according to the grade of the fault if the air conditioning unit has the fault. In the control method, the air conditioning unit operates with the fault on the premise of no malignant fault and the fault problem is solved after work.

The invention relates to the field of heat management of electric vehicles, and in particular to an integrated thermal cycling system of an electric vehicle. The integrated thermal cycling system of the electric vehicle comprises a motor system heat dissipation device, a motor, a motor controller, an air-conditioning system, a first water pump, an air heater, a water cooling jacket, a battery pack, a heater, a battery pack heat dissipation device, a second water pump, a heat exchanger and an evaporator; and a refrigerant pipeline and a water pipeline are connected onto the heat exchanger, the water cooling jacket is installed on the battery pack, and the motor system heat dissipation device, the first water pump, the motor controller and a motor are sequentially and circularly connected with each other according to the circulating water flowing direction, so that a motor cooling cycling circuit is formed. When the environment temperature is low, the battery pack is preheated and heated and an air conditioner in the vehicle is warmed up before the electric vehicle is started, when the environment temperature is high, the battery pack is cooled, a cab is refrigerated and the motor and the motor controller are cooled, accordingly, high requirements on the self operating temperatures of the motor system and a battery are satisfied, so that the service lives and efficiency of the motor system and the battery are increased.

In a vehicle air conditioner, a first air passage through which outside air flows and a second air passage through which inside air flows are provided to be partitioned from each other, so that outside air in the first air passage is blown toward a front seat side of a passenger compartment from a front air outlet after passing through a first part of a heat exchanger, and inside air in the second air passage is blown toward a rear seat side of the passenger compartment from a rear air outlet after passing through a second part of the heat exchanger, during a double layer flow mode. Thus, in the second air passage, temperature of air sucked from an inside air port can be set to temperature of inside air inside the passenger compartment, while air pressure loss due to an inside air suction is decreased. As a result, in the vehicle air conditioner, air-conditioning capacity for the rear seat side is improved.

The present invention relates to heat transfer compositions comprising 2,3,3,3-tetrafluoropropene, difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane for use in refrigeration, air-conditioning, heat pump systems, and other heat transfer applications. The inventive heat transfer compositions can possess reduced global warming potential while providing good capacity and performance.

In a vehicle seat air conditioning system, when air blows, discomfort in seating caused by the presence of an air-blowing unit is reduced and a depression is nearly avoided in the surface cover material. The system utilizes a surface cover material, a cushion member positioned on a backside of the surface cover material, an air-blowing hole penetrating through the thickness of said cushion member, an air-blowing unit positioned on a backside of said cushion member to supply air to said air-blowing hole, and a support portion, which is integral with the cushion member and that supports the surface cover material, provided in a position of said air-blowing hole. The size of an air-blowing hole proximate to the support portion is smaller than the size of an air-blowing hole proximate said air-blowing unit.

An air conditioning unit may be controlled based on an index of performance designed to quantify re-circulation levels. For the air conditioning unit control, an index of performance set point is determined and the index of performance for a first iteration is measured. In addition, it is determined whether the measured index of performance for the first iteration equals or exceeds the index of performance set point. Moreover, a supply air temperature of the air conditioning unit is increased in response to the measured index of performance for the first iteration equaling or exceeding the index of performance set point.

An air conditioning apparatus for a vehicle seat includes a seat blower unit disposed in a lower side of the seat, and a seat duct for leading air from an air conditioning unit to the seat through the seat blower unit. In the air conditioning apparatus, it can be determined that heat load of a passenger compartment is decreased to a predetermined value based on an operation state of a unit blower of the air conditioning unit, and the seat blower is stopped when the heat load is decreased to the predetermined value. Further, the seat blower is turned on or off according to the heat load of the passenger compartment, so that temperature of the seat can be controlled within a predetermined range. On the other hand, even when the unit blower is stopped when a water temperature of a heating unit of the air conditioning unit is lower than a set temperature, the seat blower unit and an electrical heater disposed in the seat duct are operated so that air passing through the heating unit is heated by the electrical unit and is blown into the seat by the seat blower unit.

In a method for evaluating one or more components in a data center, inlet and outlet temperatures of one or more heat dissipating devices are detected. In addition, the temperatures of air supplied by one or more computer room air conditioning (CRAC) units are also detected. Indices of air re-circulation for the one or more heat dissipating devices are calculated based upon the detected inlet temperatures, outlet temperatures and supplied air temperatures. The indices of air re-circulation are determined at various flow field settings of air delivered to the one or more heat dissipating devices and the one or more components are evaluated based upon changes in the indices of air re-circulation for the one or more heat dissipating devices at the various flow field settings.

An conditioning system is shown for a helmet having an impact resistant body with an exterior, an interior which defines a head receiving cavity, a front region and having a back region which is located adjacent a lower edge of the helmet body. A first opening is provided in the helmet body located at the back region of the helmet body adjacent a lower edge thereof which acts as an air intake opening. A blower fan communicates with the air intake passage for drawing air into the intake passage and forcing the air from the back region of the helmet in the direction of the front region thereof. A thermoelectric cooling element is located in the helmet interior in communication with the intake passage downstream of the blower fan. The thermoelectric cooling element has a cold side and a hot side. A DC power source is provided for powering the thermoelectric cooling element. An external heat sink is located on the helmet exterior and is connected to the hot side of the thermoelectric cooling element by means of a second opening in the helmet body. Air passing over the thermoelectric cooling element is cooled and air conditions the head receiving region of the helmet.

In a method for evaluating one or more components in a data center, inlet and outlet temperatures of one or more heat dissipating devices are detected. In addition, the temperatures of air supplied by one or more computer room air conditioning (CRAC) units are also detected. Indices of air re-circulation for the one or more heat dissipating devices are calculated based upon the detected inlet temperatures, outlet temperatures and supplied air temperatures. The indices of air re-circulation are determined at various flow field settings of air delivered to the one or more heat dissipating devices and the one or more components are evaluated based upon changes in the indices of air re-circulation for the one or more heat dissipating devices at the various flow field settings.

A system for reducing effects of adverse air re-circulation in a room containing at least one heat generating component includes an air conditioning unit configured to cool airflow in the room and at least one cooling vent tile operable to deliver the cooled airflow to the at least one heat generating component. The system also includes at least one secondary vent tile positioned and operated to one of, introduce airflow into a re-circulating airflow and remove airflow from a re-circulating airflow, to thereby respectively divert or vary the temperature of the re-circulating airflow and thereby reduce the effects of air re-circulation in the room.

In a method of operating an air conditioning unit to reduce moisture varying operations, psychrometric chart data is accessed. In addition, a constraint is set on the relationship between the temperature of air supplied by the air conditioning unit and the relative humidity of the air supplied based upon information contained in the psychrometric chart data. The air conditioning unit is controlled based upon the constraint to thereby reduce moisture varying operations of the air conditioning unit.