1603results about "Vessel ventillation/heating/cooling" patented technology

A HVAC and battery thermal management system for a vehicle having a HVAC portion and a battery portion, and a method of operation, is disclosed. The HVAC portion may include a main chamber, an evaporator located in the main chamber, a heater extending across a portion of the main chamber downstream of the evaporator, a battery duct extending from the main chamber adjacent to the heater and in fluid communication with the main chamber both upstream and downstream of the heater. The battery portion may include a battery pack in fluid communication with the battery duct, a battery cooling valve located in the battery duct and configured to selectively allow fluid flow from the main chamber between the evaporator and the heater, and a battery heating valve located in the battery duct and configured to selectively allow fluid flow from the main chamber downstream of the heater.

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.

A vent assembly, suitable for marine use including, for example, venting an enclosure, such as an engine compartment, on a boat. The vent assembly has substantially the external appearance of a cast or machined, one piece, stainless steel vent, at a cost very little more than a molded plastics vent. A molded plastics vent has a head perforated by a pattern of ventilating slots separated by flanking strips. A decorative, corrosion-resistant, sheet metal cover shell lies tight against the front side of the molded plastics vent and has a pattern of slots and strips mapping substantially on the pattern of slots and strips of the molded plastics vent. Snap-fit fasteners fix the cover shell on the vent so that the cover shell slots are a substantially flush continuation of the vent slots, so as to provide the decorative appearance of a solid metal vent at substantially lower cost and without compromising or through flow capability.

An electric vehicle is provided with a cell voltage sensor (32) and a cell temperature sensor (31) which are mounted to each of a plurality of cells (21); a gas temperature sensor (33), a carbon monoxide gas sensor (34), and a hydrogen gas sensor (35) which are mounted to a chamber (27); a gas temperature sensor (36), a carbon monoxide gas sensor (37), and a hydrogen gas sensor (38) which are mounted to a gas exhaust passage (28); and an air-conditioning fan (17), a channel-switching damper (19), and a driving motor (42) which lowers a window glass (41). When battery state values detected by the sensors (31) to (38) exceed predetermined thresholds, a battery pack (20) is judged to be abnormal. Then, the channel-switching damper (19) and the air-conditioning fan (17) are started and the window glass (41) is lowered to ventilate the vehicle interior. This speedily exhausts smoke generated from a lithium ion battery.

The cabin cooling system includes a cooling duct positioned proximate and above upper edges of one or more windows of a vehicle to exhaust hot air as the air is heated by inner surfaces of the windows and forms thin boundary layers of heated air adjacent the heated windows. The cabin cooling system includes at least one fan to draw the hot air into the cooling duct at a flow rate that captures the hot air in the boundary layer without capturing a significant portion of the cooler cabin interior air and to discharge the hot air at a point outside the vehicle cabin, such as the vehicle trunk. In a preferred embodiment, the cooling duct has a cross-sectional area that gradually increases from a distal point to a proximal point to the fan inlet to develop a substantially uniform pressure drop along the length of the cooling duct. Correspondingly, this cross-sectional configuration develops a uniform suction pressure and uniform flow rate at the upper edge of the window to capture the hot air in the boundary layer adjacent each window.

A sensor system (24) for controlling a ventilation unit (22) of a vehicle (20) includes a sensitivity selector (70) for enabling a user to select a setting (76) corresponding to an air quality threshold (94, 98), and an air quality sensor (62) proximate an exterior of the vehicle (20) for detecting an air quality parameter (71). A controller (66) is responsive to the selector (70) and the sensor (62), and is in communication with an inlet air valve (32) of the ventilation unit (22). A method (118) of operating the sensor system (24) entails receiving a current value of the air quality parameter (71) at the controller (66) for comparison with the air quality threshold (94, 98). The controller (66) generates a switch signal (74) in response to the comparison for adjusting the inlet air valve (32) between an outside air mode (44) and a recirculation mode (46).

An HVAC control system for a passenger compartment of an over the road vehicle comprises a controllable air conditioner for directing cooled air flow through the passenger compartment and a controllable heater for directing heated air flow through the passenger compartment. A battery selectively powers the air conditioner and the heater. A sensor senses battery energy. A control panel includes user input devices for manually selecting operating parameters of the HVAC system and a battery remaining time display. A controller is operatively connected to the air conditioner, the sensor and the user control panel, the controller determining estimated battery remaining time based on battery energy and the manually selected operating parameters, and displaying the estimated battery remaining time on the battery remaining time display.

A control strategy for supply fans in variable-air-volume heating, ventilating, and air-conditioning systems that reduces the static pressure at part-load conditions. The invention consists of a static pressure sensor, an airflow sensor, a supply fan, a fan modulating device, and a controller coupled to the static pressure sensor and the airflow sensor. The controller includes a calculator that calculates the static pressure setpoint as a function of the airflow rate. The static pressure setpoint is lower when the airflow rate is lower. The controller compares the static pressure setpoint with the static pressure, and it commands the fan modulating device so that the static pressure remains close to the static pressure setpoint. Alternatively, the controller includes a calculator that calculates a loss coefficient as a function of the static pressure and the supply rate. The controller compares the loss coefficient with a loss coefficient setpoint, and it commands the fan modulating device so that the loss coefficient remains close to the loss coefficient setpoint. When the airflow rate is sufficiently high, the alternative embodiment switches to a constant-pressure controller.

A system and method of selecting air intake between 100% fresh air mode and 100% recirculated air mode for optimum heating/cooling performance, fuel economy and/or high voltage (HV) battery power consumption is disclosed. The system and method includes a partial recirculation control strategy in which the air inlet door is moved progressively to any position by taking into account cooling/heating loads and cabin fogging probability. As cooling/heating loads increase the air inlet door moves toward 100% recirculation mode. As fogging probability increases the air inlet door moves toward 100% fresh air mode. By selectively choosing a position between 100% recirculation and 100% fresh air, fuel economy and/or HV battery power consumption is optimized without compromising passenger comfort or causing fogging on interior glass surfaces. In cooling applications the compressor load is minimized and air conditioning performance is improved due to the reduced evaporator cooling load. The direct result of this improvement is increased fuel economy in the case of the internal combustion vehicle, reduced engine on time in the case of the hybrid electric vehicle (due to reduced HV battery power consumption), and reduced HV battery power consumption in the case of the hybrid electric vehicle (HEV) and the electric vehicle (EV). In heating applications, as the heating load is reduced the fuel economy of the internal combustion (IC) engine will be improved, the engine on time is reduced in the case of the HEV, and HV battery power consumption is reduced in the case of the EV.

An air treatment system for a vehicle includes a first compressor selectively coupled to a first power source of the vehicle. A second compressor is selectively coupled to a second power source of the vehicle. A first heat exchanger communicating with an interior space is defined in the vehicle. A second heat exchanger communicates with an environment exterior to the vehicle. A valve member is provided which, in a first position, couples an inlet of each of the first and second compressors to an outlet of the first heat exchanger and an outlet of each of the first and second compressors to an inlet of the second heat exchanger. In a second position, the valve member couples the outlets of the first and second compressors to an inlet of the first heat exchanger and the inlets of each of the first and second compressors to an outlet of the second heat exchanger. A controller is provided that selectively actuates at least one of the first and second compressors and the valve member.

A cabin for a work vehicle comprises: a driver's seat positioned within the cabin; cabin frames including at least a transverse frame located in a rear region of the cabin; a roof supported by at least some of the cabin frames; at least one air-conditioning duct located within the roof; an air conditioning unit located rearwardly with respect to a rearward end of a seat portion of the driver's seat and adjacent the transverse frame for conditioning air and for feeding air-conditioned air into the at least one air-conditioning duct.

An adjustable air vent assembly has a frame and a plurality of louvers pivotally mounted to the frame. The plurality of louvers is movable between a closed position and a diffuse position. In the closed position, each louver has an edge contacting an edge of at least one other louver to substantially prevent air from flowing through the plurality of louvers in the closed position. In the diffuse position a first louver is oriented along a non-parallel plane with respect to a second louver. A single actuator is provided for moving the plurality of louvers between the closed and diffuse positions.

The invention relates to a device for controlling a ventilation device for a motor vehicle interior (36), comprising at least one air quality sensor (46) for generating an air quality signal of the air supplied to the air quality sensor (46), an actuator for adjusting an air damper (20a, 20b) of the ventilation device as a function of the air quality signal, and a ventilator (14) for transporting the air through the ventilation device into the motor vehicle interior (36). The air quality sensor (46) and the ventilator (14) form a structural unit (44).

A vehicle air conditioner includes an air conditioning unit where temperature adjustments of both right and left-seat side air-conditioning zones are independently performed. In the vehicle air conditioner, a swing range of right-seat side center louvers provided in a right center face air outlet is restricted from a front right-seat direction to a rear left-seat direction, and a swing range of left-seat side center louvers provided in a left center face air outlet is restricted from a front left-seat direction to a rear right-seat direction. Thus, right-left independent temperature control can be accurately performed in the vehicle air conditioner.

An HVAC system for work vehicle having an operator compartment for an operator is disclosed. The HVAC system includes a pressurizer blower and an air-conditioning system coupled to an electronic circuit. The electronic circuit is configured to reduce the output of the pressurizer blower when the operator selects a high output from the air-conditioning system. The HVAC system is also configured to provide defog operation in both a manual mode and an automatic mode of operation. The HVAC system is configured to reset the defog operation when the vehicle ignition is turned off or turned back on. The HVAC system is also configured not to reset the defog operation when the operator switches rapidly between the automatic mode and the manual mode of operation.

A method and apparatus for controlling a vehicle HVAC system to automatically defog a windshield glass and to prevent fogging or condensation of the windshield glass. The ambient air temperature and vehicle speed are measured and used to determine a windshield glass temperature. The in-cabin air temperature and relative humidity are measured and used to determine a dewpoint. An dewpoint margin is calculated to compensate for sensor accuracy and fog predictability. A fog margin, which is based upon calculated windshield glass temperature and dewpoint, is calculated and used, in conjunction with the dewpoint margin, to control the HVAC system to anticipate potential fogging conditions and to scale the intensity of the HVAC system response based upon the severity of fogging conditions.

The air conditioner includes a surface temperature sensor for detecting a surface temperature of a clothes portion of a passenger. In the air conditioner, a thermal-feeling estimation value for the passenger is calculated based on the surface temperature of the clothes portion of the passenger, and air-conditioning operation of a passenger compartment is controlled based on the thermal-feeling estimation value. Accordingly, in the air conditioner, the thermal feeling can be always accurately estimated, and comfortable air-conditioning control can be performed using the thermal-feeling estimation value.