Abstract:
The present invention concerns a wind power installation comprising a pylon and a pod arranged at the tip of the pylon. The invention further concerns a method of controlling such a wind power installation. In order to prevent a fire from occurring or at least to be able to rapidly extinguish a fire which has occurred, there is provided a first apparatus for producing an inert atmosphere.
Abstract:
A device for regulating exhaust air flow in a ventilation system when a rack is removed from the system. The device includes a housing forming an air conduit. A valve is mounted in the housing with the valve being moveable between an open position when the device is connected to the rack, and in one of a plurality of partially preset closed positions when the device is not connected to the rack. A valve adjustment member selects the one of a plurality of partially closed positions and is preset during factory testing. When valve is installed at facility and valve is removed from rack the adjustment is fully automatic. The technician merely disconnects the exhaust drop hose with valve attached, and valve automatically adjusts to a preset back pressure duplication position (partially closed position).
Abstract:
A louver has vertical blades arranged in a frame alternately in a staggered relation from front to back in a front and a rear row. The blades in at least the front row have a web oriented substantially perpendicularly to the plane of the frame and substantially parallel to the jambs, a pair of front flanges extending in opposite directions generally laterally from a front edge of the web, and a pair of rear flanges extending in opposite directions generally laterally from a rear edge of the web. The webs subdivide the air flow volume within the frame into flow channels, each of which is partially blocked laterally by the front flanges and the rear flanges of the blades of the front row. The blades of the rear row have flanges that block the portions of the channels between the extremities of the flanges of the blades of the front row. The flanges of the adjacent blades overlap so that there is no straight path through the flow channels along which air and water entrained in the air can pass perpendicularly to the plane of the frame and the air flows along a tortuous flow path of approximately constant area. The flanges are configured to control and trap water impinging on them.
Abstract:
In an air conditioner having a single outdoor unit and a plurality of indoor units, if at least two indoor units supply operation commands, an indoor unit allowed to be operated and an indoor unit not allowed to be operated are determined in accordance with a predetermined operation priority order. An operation standby signal is sent to the indoor unit not allowed to be operated. If the indoor unit allowed to be operated stops its operation, a new indoor unit is determined by again referring to the operation priority order. A confirmation signal is then sent to the determined new indoor unit under the standby state until then. If the indoor unit received the confirmation signal sends a response signal indicating that the indoor unit still intends to operate, then an operation permission signal is given to the new indoor unit.
Abstract:
The present invention relates to the cooling and heating dual-purpose air conditioner, and more particularly to the heat pump type cooling and heating dual-purpose air conditioner wherein the stand-by control is performed in order to prevent the viscosity increases caused by the lubricating oil freeze in the compressor occurring at the initial cooling operation stage and therefore the smooth drive of a compressor in an air conditioner is performed by the preventing of the lubricating oil freeze.
Abstract:
An air conditioning device comprises a refrigerant compression cycle having an electrically driven compressor, an electric motor for driving the compressor, frequency changing means for changing the frequency of a.c. power to be applied to the motor, an outlet port for blowing off conditioned air, flowing direction changing means for changing the flowing direction of the conditioned air from the outlet port, a switch which is actuated by a user when he desires to allow the conditioned air to hit himself directly, and control means for controlling the frequency changing means and the flowing direction changing means, wherein when the switch is actuated during room cooling operation, the control means outputs to the flowing direction changing means a signal for directing the conditioned air from the outlet port in a downward flowing direction.
Abstract:
A reversible mode heating and cooling system comprises a reversible heat pump unit having a compressor, a reversible valve, an indoor heat exchanger in heat exchange relationship with indoor ambient air a water cooled concentrator, refrigerant expansion means, an outdoor heat exchanger in heat exchange relationship with outdoor ambient air and an auxiliary heat exchanger in heat exchange relationship with a water source for enhancing the capacity and efficiency of the system to transfer heat to the refrigerant during the heating mode at low outdoor ambient temperatures. The concentrator is disposed downstream of the outdoor heat exchanger (condenser) in the cooling mode of operation to cool the refrigerant exiting the heat exchanger for enhancing its ability to absorb heat in the indoor heat exchanger (evaporator). A temperature and/or pressure sensing and flow control subsystem senses system or ambient parameters and operates fluid flow control valves to most efficiently and effectively direct refrigerant and water source flow to the outdoor and/or auxiliary heat exchangers. A frost preventative or defrost system for the auxiliary heat exchange coil deriving its thermal energy from the hot refrigerant in the compressor discharge conduit is also provided.
Abstract:
A self-contained window-mounted, heat/cool room air conditioner for automatically maintaining a predetermined indoor room temperature over a wide range of outdoor ambient temperatures. The air conditioner includes a reverse cycle refrigeration system having an inside heat exchange coil and an outside heat exchange coil, the coils being series-connected with an associated refrigerant compressor via a reversing valve wherein the system in addition to functioning in a conventional room air cooling mode can also function as a heat pump to heat room air over a limited range of outdoor ambient temperatures. Low and high wattage resistance heating elements supplement or replace the heating action of the reverse cycle refrigeration system under certain operating conditions. Four thermistor temperature sensors are used to provide precise control of the air conditioner for maximum efficiency.
Abstract:
In an air conditioning system for automobiles including a temperature control apparatus having temperature setting device for setting a vehicle compartment temperature, a temperature sensing device for sensing an actual vehicle compartment temperature, a temperature difference signal device for generating a difference signal in accordance with a difference between the set vehicle compartment temperature and the sensed actual vehicle compartment temperature, and air flow control device for controlling the rate of air flow from a blower so as to provide varying air flow rates up to a maximum air flow rate in accordance with the value of the difference signal, a detecting device for detecting that the air condition system is at a heating operation, and a control arrangement responsive to the output from the detecting device and the value of the difference signal for controlling the air flow rate control device so that the rate of air flow from the blower is maintained at a predetermined flow rate which is less than the maximum air flow rate independent of the difference between the set temperature and the actual vehicle compartment temperature when the difference exceeds a predetermined value.
Abstract:
Apparatus and a method for providing failsafe supplemental heat operation of an air conditioning control are disclosed. Operating power to a microprocessor control is discontinued when the air conditioning unit is placed in a supplemental heat mode by the user. The microprocessor control is so arranged that appropriate connections are made to operate a supplemental heat source in response to a first stage heating need being sensed by the thermostat when operating power to the microprocessor control is discontinued. Under normal conditions multiple stage heating operation is provided with a supplemental heat source being operated under control of a programmed microprocessor.