Abstract: A method of adjusting an operating temperature of a control device (2) of a motor vehicle automatic transmission. The transmission control has a hydraulic unit (3) and an electronic unit (4) with electronic modules. The control device (3)is situated in a transmission housing which is partially filled with transmission oil and at least partly surrounded by transmission oil. The control device (2) has a cooling device (5) by which at least part of the electronic unit (4) is cooled with the transmission oil. The transmission oil has a temperature &THgr;C which is lower than a prevailing transmission oil temperature &THgr;G. The electronic unit (4) is impinged upon with a defined volume flow of the transmission oil.

Abstract: A compressor system includes a fluid system having a cooler and a valve. The valve includes a housing and a spool disposed within the housing. The spool has a temperature sensitive wax cartridge, and is movable between an actuated position and a non-actuated position. When the spool is in the actuated position, inlet fluid flow enters the valve through an inlet port, exits the valve through the cooler port, flows through the cooler, reenters the valve through the cooler return, flows over the wax cartridge, and exits the valve through the outlet port. When the spool is in the non-actuated position, the inlet fluid flow bypasses the cooler, flows through the valve and over the wax cartridge, and exits the valve through the outlet port. The wax cartridge only senses the temperature of the inlet fluid flow when the spool is in the non-actuated position.

Abstract: A catalytic combustion heater having, in a fuel gas flow passage in which an inflammable gas- and combustion support gas-containing fuel gas flows, tubes in which an object fluid to be heater flows, and an oxidation catalyst provided on outer surfaces of the tubes and contacting the fuel gas to generate an oxidation reaction, comprising a catalyst-carrying heat exchanger adapted to heat the object fluid with the oxidation reaction heat of the fuel gas, a detecting member adapted to detect the temperature of a combustion exhaust gas in the fuel gas flow passage to check whether the temperature is at the level of a dew point thereof or not, and a control unit adapted to control at least one of a feed rate of the combustion support gas, which is supplied to the fuel gas flow passage, and a feed rate of the inflammable gas.

Abstract: Cooling equipment, which may be connected to the water discharge from a working or operating machine with a water (20/20′) cooling circuit (2) to make the water re-circulate once cooled (24), characterized in that the cooling equipment comprises: at least one cooling tower (21-21′) with an extended surface for wetting and evaporation; at least one air flow generator device (3-31) for easing the evaporation; at least one closed cycle frigorific circuit (1) whose condenser (12) is placed downstream (12′) of the cooling tower (21-21′) with respect to the air flow (3-31) and whose evaporator (14) is placed downstream of the water cooling circuit (2) for exchanging heat with the cooled water (22) in the cooling tower (2-21′) for then making the water re-circulate in the operating machine (24).

Abstract: A temperature control system comprises a reservoir that is holding a hot fluid; a heat exchanger, for an electronic component, coupled to an input conduit that carries the hot fluid from the reservoir into the heat exchanger; an output conduit coupled to the heat exchanger, that carries the hot fluid from the heat exchanger back to the reservoir; a first temperature sensor, coupled to the input conduit; and a second temperature sensor, coupled to the output conduit. A heater is coupled to the output conduit which adds heat to the hot fluid in the output conduit in response to a heater control signal; and a cooler is coupled to the reservoir which adds cold fluid to the reservoir in response to a cooler control signal. A temperature controller generates the heater control signal and the cooler control signal as respective functions of both sensed temperatures.

Abstract: A convective cooling apparatus cools an electronic device including at least one heat-generating component and enclosed in a case having cooling medium such as air or fluid therein. The convective cooling apparatus neither attempts to increase the velocity of flow in the cooling medium nor replaces the cooling medium with other material as prior art cooling apparatus did. Instead, it utilizes the instability which is inherent in the flow of the cooling medium. In the convective cooling apparatus, by using a driver for generating a signal tuned to the characteristic frequency of the flow, a an acoustic vibrator is driven to provide acoustic waves. The acoustic waves induce resonance of flow, which renders the cooling medium vigorously mixed, which, in turn, enhances the heat dissipation from the device.

Abstract: A catalytic combustion heater having, in a fuel gas flow passage in which an inflammable gas- and combustion support gas-containing fuel gas flows, tubes in which an object fluid to be heater flows, and an oxidation catalyst provided on outer surfaces of the tubes and contacting the fuel gas to generate an oxidation reaction, comprising a catalyst-carrying heat exchanger adapted to heat the object fluid with the oxidation reaction heat of the fuel gas, a detecting member adapted to detect the temperature of a combustion exhaust gas in the fuel gas flow passage to check whether the temperature is at the level of a dew point thereof or not, and a control unit adapted to control at least one of a feed rate of the combustion support gas, which is supplied to the fuel gas flow passage, and a feed rate of the inflammable gas.

Abstract: A catalytic combustion heater having, in a fuel gas flow passage in which an inflammable gas- and combustion support gas-containing fuel gas flows, tubes in which an object fluid to be heater flows, and an oxidation catalyst provided on outer surfaces of the tubes and contacting the fuel gas to generate an oxidation reaction, comprising a catalyst-carrying heat exchanger adapted to heat the object fluid with the oxidation reaction heat of the fuel gas, a detecting member adapted to detect the temperature of a combustion exhaust gas in the fuel gas flow passage to check whether the temperature is at the level of a dew point thereof or not, and a control unit adapted to control at least one of a feed rate of the combustion support gas, which is supplied to the fuel gas flow passage, and a feed rate of the inflammable gas.

Abstract: A catalytic combustion heat exchanger includes a fuel gas passage and a number of tubes, which are located in the fuel gas passage. Fuel gas flows in the fuel gas passage. An object fluid, which is heated by the heat exchanger, flows in the tubes. Fins, which carry a catalyst, are fixed to the outer surfaces of the tubes. The fluid is heated by an oxidation reaction of the fuel gas that occurs on the surface of the fins. When the heat exchanger is initially activated, the controller maintains the flow rate of the object fluid at a relatively low rate until a temperature detector detects that the temperature of the object fluid is higher than a certain level to limit heat transfer from the fins to the object fluid. This increases the fin temperatures throughout the heat exchanger. The controller increases the flow rate of the object fluid when the temperature of the object fluid exceeds a certain level, to increase heat transfer to the object fluid.

Abstract: The output of known cooling equipment cabinets fitted with air-to-air heat exchangers is not sufficient for hot climates. The proposed cooling system is bipartite, comprising a first set of cooling equipment that provides for closed cooling air circulation inside the cabinet, and a second set of cooling equipment that provides for open cooling air circulation inside the cabinet. For most of the year, cooling of the cabinet can be handled with the first set of cooling equipment, which consists of an air-to-air heat exchanger (100). For the short period of time that the heat exchanger alone cannot ensure sufficient cooling of the air inside the cabinet, the second set of cooling equipment will be employed to provide through-flow air circulation. This is achieved by drawing air into the cabinet through a filter (104) and blowing warmed-up air out.

Abstract: The present invention is directed to a cooling apparatus and method, and more particularly, an apparatus and method for cooling the air exiting an electronics enclosure. Cooling the air exiting the enclosure causes the enclosure to present a neutral heat load to a room containing such enclosure. Cooling the exiting air obviates the necessity of increasing the room air conditioning capacity to account for the heat added to the room by the electronics within the enclosure. Further, the invention decreases the possibility of moisture condensation within the enclosure and also provides a more efficient cooling system than is available from prior art devices and techniques.

Abstract: A heat exchanging apparatus in cooperation with a refrigeration system. The apparatus comprises water lines, a thermos tank for storing water, a thermostat, heat collecting tanks in communication with the water lines having a refrigerant line passed therethrough for water to absorb the heat released by refrigerant transferred from the compressor to the condenser of the refrigeration system, a pump, and drive a controller wherein the pump pumps heated water to the thermos tank for storage. The drive controller is electrically connected to the thermos tank for measuring the temperature of the water for determining whether to stop an operation of the pump as compared to a predetermined temperature.

Abstract: In a vehicle air conditioner, an electrical heating member is disposed integrally with a heating heat exchanger including a core portion and upper and lower tanks. An electrical connection portion of the electrical heating member is disposed on a downstream air side of the lower tank of the heating heat exchanger. Therefore, the lower tank of the heating heat exchanger can restrict water from being covered onto the electrical connection portion of the electrical heating member. Thus, an electrical short circuit in the electrical connection portion is prevented, while air flow resistance is restricted from being increased.

Abstract: A cooling apparatus comprising an air-cooled heat exchanger, a plurality of louvres to control a cooling air flow passing the heat exchanger, a mechanism for operating the louvres and means for actuating the operating mechanism according to temperature of the heat exchanger. The actuating means comprises a bar having a first end and a second end and being of a material having a considerably lower thermal expansion coefficient than that of the heat exchanger, said bar being attached by its first end substantially at a first end of the heat exchanger, and means for controlling the position of the operating mechanism in dependence on a difference in displacements of the second end.

Abstract: A temperature control system which performs control of an object whose temperature is to be controlled as accurately as possible. The system comprises: a chiller located in a fluid circulating and supplying system, for cooling a thermal fluid returning from a vacuum chamber, a first flow control valve located in the fluid circulating and supplying system in a position between the chiller and the vacuum chamber, a bypass passage for splitting and supplying thermal fluid returning from the vacuum chamber to a position between the first flow control valve and the vacuum chamber, before it reaches the chiller, a second flow control valve located in the bypass passage, and a halogen lamp heater located in the fluid circulating and supplying system in a position between a confluence point of the bypass passage and the vacuum chamber, for adjusting the temperature of the thermal fluid passing therethrough to a set temperature.

Abstract: A drop-in, portable, water conditioning assembly for use in a tank containing water is disclosed. The water conditioning assembly includes a refrigeration unit having a compressor assembly, a condenser and at least one depending evaporator coil for insertion into the tank water. A heating element also ends downwardly from a base and a temperature controller is operatively connected to both the refrigeration unit and the heating element for controlling both the heating and cooling of the water. A motor drives a depending shaft which mounts a blade. The blade both aerates and circulates water within the tank.

Abstract: A vehicle air-conditioning system includes electric heating devices to accelerate a rise in temperature of air for heating a passenger compartment by accelerating a rise in temperature of warm water used to heat the air and by directly heating the air. Electric heating devices are built into a heat exchanger for heating so that the devices can release heat into surrounding air through radiating fins. When the system is in a heating operation region and the temperature of warm water available to flow through the heat exchanger is below a set temperature T.sub.2, the electric heating devices are turned on. A blower for blowing heating air into a passenger compartment through the heat exchanger is stopped, and a warm water valve is opened to allow the warm water to flow through the heat exchanger, whereupon heat from the electric heating devices is released through the radiating fins into the warm water inside the heat exchanger. When the temperature of the warm water rises above the set temperature T.sub.

Abstract: A bypass device for ATF (automatic transmission fluid) is disclosed. The bypass device of this invention has a valve housing with a plurality of ports. A spring-biased valve spool is movably received in the housing, while the thermal expansion bar is inserted into one end of the spool at a position opposite to a valve spring. The expansion bar selectively and thermally expands in accordance with the ATF temperature, thus moving the spool with two internal passages and one bypass passage being selectively formed in the valve housing. The device allows ATF to selectively bypass an ATF cooler in the event the ATF temperature is substantially low enough to allow the ATF to be free from any requirement of cooling, thus allowing the ATF at an appropriate temperature to circulate in the automatic transmission.

Abstract: A cylindrical casing 33 is provided in a tank 25 in which a pump 14 and a heat exchanger 15 are assembled. A heater 12 is mounted at the top of the tank 25 in such a way that its heating section 12a is inserted into the casing 33. A constant-temperature liquid is fed from an inlet 36 at the lower end of the casing 33, fills the inside of the casing 33, and then flows out from the outlet 37 at the upper end, while it is simultaneously heated by the heater 12.

Abstract: A shell and tube heat exchanger for exchanging heat between a shell side fluid and a tube side fluid has a longitudinally extending shell, a longitudinally extending tube bundle and one or more baffles positioned within the shell for directing the shell side fluid to flow across the tube bundle. One or more valves is also provided within the shell of the heat exchanger. Each valve is operable between a first position and a second position and co-operates with a baffle for adjusting the flow of shell side fluid through the shell side of the exchanger. Each of the valves is controlled by an external actuator.

Abstract: A combination of setting a correction value of an atmospheric temperature for each temporal section in response to a predicted value of a variation of the atmospheric temperature in a day and a delayed variation of a temperature of hydraulic oil due to thermal inertia and correcting a command value for a temperature regulation of the hydraulic oil at a supply source of the hydraulic oil in response to the correction value of the atmospheric temperature, performing a feed forward compensation of the temperature of the hydraulic oil with respect to the variation of the atmospheric temperature for the day as a cyclic period, permits a working body of hydraulic oil to be kept at an adequate temperature, even under working conditions subjected to significant influences of atmospheric temperature variations and thermal inertia.

Abstract: An electronic device cooler for cooling an exothermic member arranged in a case, including an air compressor configured to compress adiabatically air in the case to an elevated temperature. Also included is a heat pipe configured to discharge heat from the air adiabatically compressed to the elevated temperature to an outside of said case, and an expansion turbine configured to expand adiabatically the air having heat discharged by the heat pipe to a reduced temperature.

Abstract: An electrical circuit for controlling the operation of a fan cooled aftercooler receiving pressurized air from a compressor located in a locomotive. The circuit includes a motor for driving the fan of the aftercooler, an electrical relay comprising a coil and contacts operated by the coil, and a temperature sensitive switch connected in electrical series with the coil. The contacts of the relay are connected in electrical series with the motor. The temperature sensitive switch is effective to open the circuit of the coil and thereby open the contacts to stop operation of the fan when ambient temperature falls to or below freezing.

Abstract: A combination thermostat and selector valve for a prime mover for a gas driven heat pump system is positioned upstream of the prime mover in a heat pump system, so that the coolant for the prime mover will be maintained at a substantially constant temperature without regard to load or outdoor ambient conditions.

Abstract: A heat pipe (1) containing a working fluid, comprises an evaporator (3), a condenser (2), an aperture (16) interconnecting the evaporator and the condenser, and a regulating means (13, 14) for limiting the maximum temperature in the condenser to a predetermined temperature. The regulating means comprises a plug (13) operable by means of a temperature sensitive member (14) to move between a first position in which the aperture is open and a second position in which the plug covers the aperture to restrict the flow of working fluid from the condenser to the evaporator. The working fluid then collects in the condenser and acts on the plug to further restrict the flow of working fluid from the condenser to the evaporator.

Abstract: A throttle valve is provided in each actuator of a calender roll controller with the throttle valve controlling an internal air orifice within each actuator to provide a substantially uniform air mass flow of either hot or cold air. Each throttle valve is controlled in response to the temperature of the air being delivered by the actuator such that a smaller orifice is provided for hot air than for cold air to provide substantially uniform air mass flow from each of the actuators and therefore substantially uniform air velocity to better control the temperatures of the longitudinal zones of a calender roll and better maintain boundaries between the zones. In addition to throttle valve control of the actuators, an air scoop concentric with a calender roll being controlled and spaced from the calender roll is provided to channel air from the actuators over the calender roll. The scoop comprises heat insulating material to prevent heat loss out the back of the scoop.

Abstract: A heat transfer apparatus designed to control the temperature of objects placed within the apparatus over a wide temperature range of 42 to 180 degrees F. utilizing as a heating and cooling source a combined heating and air conditioning system of the type which control the temperature of a living space over only a typically narrow temperature range of between 65 and 80 degrees F. While serving as the source for the heat transfer apparatus, the combined heating and air conditioning system can continue to serve its primary function of controlling the temperature of a living space without difficulty. In a preferred embodiment, no internal modification of the heating and air-conditioning system is required for it to operate with the present invention as well as perform its primary function.

Abstract: An apparatus for preventing thermal deformation of a machine tool has a feed unit which heats a heat transfer fluid and pumps it out to a heat exchanging portion. The heat exchanging portion has at least one heat exchanging unit capable of being expanded and shrunk in accordance with the heat transfer fluid therein. The heat exchanging unit is arranged in a prescribed portion of a machine tool. The portion of the machine tool is heated by the heat exchanging unit arranged therein, whereby thermal distribution of the machine tool is equalized and heat deformation thereof is suppressed. The heat transfer fluid passed through the heat exchanging unit is recovered by a discharging portion and fed back to the feed unit. The heat exchanging unit is maintained in an expanded state by controlling the flow rate of the fluid passing therethrough by a flow control valve, so that heat exchanging operation can be carried out effectively.

Abstract: The present disclosure concerns a thermally controlled valve, such as may be installed in the cooling water system of internal combustion engines. The thermally controlled valve eliminates thermal hunting as the temperature of the cooling water increases by restricting the initial flow of cooling water. Subsequently, additional cooling water flow is permitted as the temperature of the cooling water further increases.