3468 results about "Heat transmission" patented technology

A substrate processing apparatus capable of rapidly raising and lowering the processing temperature of a substrate. The substrate processing apparatus has a mounting stage adapted to be mounted with a substrate and to control the processing temperature of the mounted substrate. The mounting stage comprises a temperature control device disposed in a mounting surface of the mounting stage for mounting the substrate thereon, a coolant inflow chamber into which a coolant is flowed, and a heat transmission/insulation switch-over chamber disposed between the temperature control device and the coolant inflow chamber so that a heat-transmitting gas is flowed into and vacuum-exhausted from the heat transmission/insulation switch-over chamber. The temperature control device has therein a gas inflow chamber into which a hot gas is flowed.

Various techniques are disclosed for improving airtight two-phase heat-transfer systems employing a fluid to transfer heat from a heat source to a heat sink while circulating around a fluid circuit, the maximum temperature of the heat sink not exceeding the maximum temperature of the heat source. The properties of those improved systems include (a) maintaining, while the systems are inactive, their internal pressure at a pressure above the saturated-vapor pressure of their heat-transfer fluid; and (b) cooling their internal evaporator surfaces with liquid jets. FIG. 43 illustrates the particular case where a heat-transfer system of the invention is used to cool a piston engine (500) by rejecting, with a condenser (508), heat to the ambient air; and where the system includes a heat-transfer fluid pump (10) and means (401-407) for achieving the former property.

The within invention improves on the indirect evaporative cooling method and apparatus by making use of a working fluid that is pre-cooled with and without desiccants before it is passed through a Wet Channel where evaporative fluid is on the walls to take heat and store it in the working fluid as increased latent heat. The heat transfer across the membrane between the Dry Channel and the Wet Channel may have dry, solid desiccant or liquid desiccant and may have perforations, pores or capillary pathways. The evaporative fluid may be water, fuel, or any substance that has the capacity to take heat as latent heat. The Wet Channel or excess cooled fluid is in heat transfer contact with a Product Channel where Product Fluid is cooled without adding any humidity. An alternative embodiment for heat transfer between adjacent channels is with heat pipes.

A liquid cooling jacket (J1) transmits heat generated by a CPU (101) which is installed at a predetermined position to coolant supplied from an external heat transmission fluid supply means and flowing inside of the liquid cooling jacket. The liquid cooling jacket includes a first flow passage (A1) on a side of the heat transmission fluid supply means, a second flow passage group (B1) including a plurality of second flow passages (B1a) branched from the first flow passage (A1), and a third flow passage (C1) installed at downstream side of the plurality of the second flow passages (B1a), and collecting the plurality of the second flow passages (B1a), wherein the CPU (101) mainly dissipates the heat to the second flow passage group (B1).

A vacuum heat insulator according to the present invention includes a core molded to be plate-shaped with the use of a binding agent. The vacuum heat insulator assumes any one of the following configurations. A) The core is formed by curing a fiber aggregate by means of a binding agent. The fibers have an average fiber diameter of at least 0.1 μm but at most 10 μm, and voids defined by fibers have a void diameter of at most 40 μm. The core has a percentage of the voids of at least 80%. B) The binding agent is varied in concentration in a through-thickness direction of the core. C) A cured layer solidified by the binding agent is formed on at least one side surface of the core. D) The core contains fibers having a length of at most 100 μm. The fibers are oriented perpendicular to a direction of heat transmission. Such vacuum heat insulator is excellent in adiabatic property. Refrigerators, to which such a vacuum heat insulator is applied, are made small in size, or have a large inner volume, or contribute to energy saving.

The omnidirectional portable appliance for steam cleaning surfaces both hard and flexible, comprises a case provided with a handle, a water feed orifice, an electricity power cord, a cleaning head, a steam generator included in the case and a venturi device [means for selectively] delivering steam to the cleaning head. The instantaneous steam generator having low thermal inertia operates at atmospheric pressure and comprises a capillary body for storing in divided form all of the supply of water to be evaporated, [in divided form] the capillary body being compressed around [the electrical heater means which comprise] a [metal-clad] resistance element and a heater body constituted by a [having a] material that is a good conductor of heat, is overmolded on the resistance element and [thereon to form a heater body which] is associated with at least one heat transmission element connected to [the] a hottest portion of the heater body and provided with a temperature sensor enabling the control of power fed to the [metal-clad] resistance element to be optimized so as to be safe regardless of the orientation in three dimensions of the steam generator.

An improved Rail Adaptor System/Rail Accessory System (RAS) which attaches to a firearm. The rail is top opening, modular, and free floats the barrel. Provided is a rigid, lightweight, strong platform for mounting firearm accessories. Heat transmission from the barrel assembly to the user is limited. The user is also protected from ventilated gases originating from the operating system. A quick detachable top rail section is provided so that that gas system may be easily accessed. This removable top section of the rail is what makes this device unique because the RAS may be installed without removing the barrel, gas system, front sight base, flash hider or the barrel nut. The herein described RAS is adaptable to a wide variety of firearms with the use of conversion parts. The top rail “returns to zero” on reinstallation allowing the remounting of various optics and electronic gun sites without the need to realign them.

A power module package includes a power circuit element, a control circuit element, a lead frame, an aluminum oxide substrate having a heat sink and an insulation layer, and a sealing resin. The control circuit element is electrically connected with the power circuit element to control chips within the power circuit element. The lead frame has external connection terminal leads in its edge and has a first surface to which the power circuit element and the control circuit element are attached and a second surface which is used as a heat transmission path. The heat sink is a plate made of metal such as aluminum and the electrical insulation layer is formed at least on an upper surface of the heat sink and made of aluminum oxide. The electrical insulation layer may be formed over an entire surface of the heat sink. Here, the insulation layer is attached to the second surface by an adhesive, on a region below where the power circuit element is attached, to the first surface of the lead frame. In addition, the sealing resin encloses the power circuit element and the control circuit element, the lead frame, and the metal oxide substrate and exposes the external connection terminals of the lead frame.

A system for heat exchange is provided in which process material flows through a heat exchanger comprising multiple heat transfer stages and the heating and or cooling power applied to each stage can be modified independently. The system comprises a unitary heat exchanger comprising a heat transfer surface comprising a plurality of elements or zones over which a process material can flow wherein each element or zone has independent means to set or control the level of heating or cooling within that zone.

A heat exchanger includes a cooling plate having a heat collection surface for fixing against an object to be cooled, an opposed heat transfer surface which may be provided with fins, and a cooling chamber over the heat transfer surface, the cooling chamber having an inlet port and an outlet port for circulating a fluid through the cooling chamber via a flow path between the ports. A flow distributor in the flow path forms a plurality of inlet channels communicating with the inlet port, a plurality of outlet channels alternating with the inlet channels and communicating with the outlet port, and a plurality of flow surfaces which are spaced from the heat transfer surface by gaps. The inlet channels communicate with the gaps so that a fluid entering the inlet channels via the inlet port will flow through the gaps, into the outlet channels, and out of the chamber via the outlet port. The gaps are dimensioned to increase fluid velocity and promote mixing of the fluid, thereby improving heat transfer.

The invention relates to a refrigerant circuit and a process for operation of the refrigerant circuit of an HVAC system of a vehicle, particularly an electric or hybrid vehicle. The refrigerant circuit includes a primary circuit with a compressor, a heat exchanger for heat transmission between the refrigerant and the environment, a collector, a first expansion member, a heat exchanger for supply of heat from the fresh air to be conditioned of the vehicle interior to the refrigerant and a heat exchanger arranged switched in parallel to the heat exchanger. Further, the refrigerant circuit is provided with a secondary train that extends starting from a tapping point positioned between the compressor and the heat exchanger up to a connection point and is provided with a heat exchanger for heat transmission from the refrigerant to the fresh air to be conditioned for the vehicle interior, and a subsequent control valve.

A coolable segment for a turbomachine such as a combustion turbine, which turbomachine is operated with a hot fluid. The segment comprises a cooling wall extending in an axial direction and in a circumferential direction orthogonal to the axial direction; a hot fluid surface to be exposed to the hot fluid. Between the wall and the surface a cooling structure is arranged which is permeable to cooling fluid and provides cooling surfaces for cooling by heat transmission through radiation. The cooling structure comprises either a netting, in particular a wire netting or a porous material.

A subsection compression-subsection heat supply-subsection gas expanding compression type machine set belongs to the technical field of heat pumps/refrigeration, and consists of a compressor, an expander, a heat exchanger, a second heat exchanger and a low-temperature heat exchanger. Gas working substances absorbing heat from the low-temperature heat exchanger and raising temperature enter the compressor; after the gas working substances are compressed in a low pressure compression section, a part of the gas working substances are provided for the heat exchanger to complete the heating of a heated medium at an initial stage; the part of the gas working substances enter the expander and is expanded at a low pressure expansion section; the other part of the gas working substances are provided for the second heat exchanger to complete the heating of a second stage of the heated medium after continuously passing through the whole compression process and raising temperature, and enter the expander from an inlet of the high pressure expansion section of the expander for expanding; the gas working substances completing the expanding work flow through the low-temperature heat exchanger to absorb the heat and raise the temperature and enter the compressor; and a heat regenerator is added to form a regenerative machine set. The gas expanding compression type machine set reduces temperature difference of heat transmission and improves the performance index; when taken as a heat pump, the gas expanding compression type machine set is particularly suitable for occasions with high heating temperature and wide range; and when used for refrigeration, the gas expanding compression type machine set can reduce power consumption.

The invention provides a heat radiation assembly and an electric device, wherein the heat radiation assembly comprises: a screening element which is arranged with a through hole thereupon and is in electrical connection with ground copper of PCT board, the PCT board being equipped with heat radiation electrical elements; a heat tube which is positioned on the through hole, the heat tube being in electrical connection with the screening element, together, the heat tube, the PCT board and the screening element constituting an electromagnetic screen cover which can hold a heat radiation electrical element; an elastic thermal interface material which is arranged between the heat tube and the heat radiation electrical element and is cemented to the heat tube and the heat radiation electrical element. In the technical solution herein, the through hole on the screen element cements the thermal interface material on the heat radiation electrical element and the heat tube, which enables heat of the heat radiation electrical element to be transmitted to the heat tube via thermal interface material, thus reducing heat resistance of the heat radiation assembly and shortening heat transmission path between the heat radiation electrical element and the heat tube.

In a gas circulating apparatus, a bypass pipe extends in parallel with an EGR gas cooler. The aperture end of the bypass pipe is inserted to inside of a housing of a valve device and is positioned adjacent to a valve in the housing. Accordingly, the high-temperature EGR gas heat introduced to a second exhaust gas passage of the housing from the bypass pipe is difficult to be transmitted to a first exhaust gas passage of the housing. Thus, the heat transmission of the high-temperature EGR gas to the EGR gas cooler can be reduced.

An improved air gun for firing paint balls, pellets,, consisting of a passively venting and freeze resistant regulator, a pressure differential trigger mechanism, and a muzzle break with angled sidewalls. The freeze resistant regulator regulates incoming high pressure gas to a user predetermined pressure to operate the gun while avoiding freezing of the regulator associated with frigid incoming compressed gases and high firing rates. This is accomplished by using a heat transmission component formed by the engagement between a hemispheric shaped tip of a regulating pin and a hemispheric cavity of an adjustment piston. Passive venting of gas from the gun upon removal of the pressurized gas supply is provided by the regulator using a reciprocating regulating pin and adjustment piston which combine to compress a seal into a seat only when pressurized gas is attached to the air gun. Once detached from a pressurized air supply the compressed air in the gun vents through the seat. Firing of the gun is achieved using a pressure differential trigger mechanism capable of fine pull adjustment using a trigger biasing mechanism. Greater accuracy of projectiles leaving the gun is provided by the muzzle break featuring of a plurality of elongated oval slots having angled sidewalls to parse propulsion gases from the projectile which reduces air turbulence encountered by the projectile upon exit from the gun.

A cooling apparatus for electronic drawers utilizing a passive fluid cooling loop in conjunction with an air cooled drawer cover. The air cooled cover provides an increased surface area from which to transfer heat to cooling air flowing through the drawer. The increased cooling surface uses available space within the drawer, which may be other than immediately adjacent to a high power device within the drawer. The passive fluid cooling loop provides heat transfer from the high power device to the air cooled cover assembly, allowing placement of the air cooled cover assembly other than immediately adjacent to the high power device. The cooling apparatus is easily disengaged from the electronics drawer, providing access to devices within the drawer.

The invention discloses a pile-embedding spiral pipe typed ground source heat pump system and a heat transmission model of a geothermal heat exchanger thereof. A solid cylindrical surface heat source model is put forward for the first time and two analytic solution expressions of the heat transmission model is worked out by the Green function method. The system can sufficiently utilizes the underground area of a building, saves a great amount of expenses for boring and pipe embedding, reduces the initial investment of the ground source heat pump system, improves the construction efficiency and has convenient and quick construction. Furthermore, the heat transmission model of the pile-embedding spiral pipe geothermal heat exchanger can quantitatively analyze the effects of all parameters of the pile-embedding spiral pipe geothermal heat exchanger on the heat transmission capability and provides a basis for the engineering design. The structure of the pile-embedding spiral pipe typed ground source heat pump system comprises the geothermal heat exchanger which is connected with an air conditioning heat pump system by pipelines; the air conditioning heat pump system is connected with a conveying and end system in the building; the geothermal heat exchangers have the quantity of more than one; and each geothermal heat exchanger forms the pile-embedding spiral pipe-typed geothermal heat exchanger by building pile foundations and spiral pipes which are embedded in the pipe foundations.

A novel cold compress designed for use as a cooling medium. The cold compress comprises a flexible bag having a plurality of spheres. Each sphere contains a heat transfer fluid. As the bag is cooled or frozen, each sphere and the fluid they contain become cool or frozen. The bag is then placed on a body part of the patient who is recovering from surgery or injury. The small spheres allow maximum surface contact with the body part. This allows maximum and efficient heat transfer.

The invention discloses a high-temperature splicing and quenching forming process of ultrahigh-strength steel. The process is characterized in that heat transfer with different degrees is performed in different regions of a part in forming and in-mold cooling processes, thus the strength and hardness are distributed according to requirements and the random splicing of the high strength and energyabsorption property of the material is achieved. At the same time, the invention also discloses a device for the process. The male mold and female mold of the device are formed by splicing one and more than one insert according to the requirement, and the male mold and the female mold are combined in five different combination modes. The process and device can ensure that the part has different mechanical properties in the different regions after one-time hot forming is finished, and can be applied to the production of automobile anti-collision parts (such as anti-collision beams, pillars A, pillars B, automobile body floor passageway and the like).

A CHP optimal dispatching model is a mixed integer programming model and is used for a district heating system (DHS) comprising a heat source, a heating network and a heat load, and the heating network comprises a heat transmission network and a heat distribution network. A plurality of heating areas is divided, and one day is divided into a plurality of time periods; the heat transmission loss of the heat distribution network is omitted, and a heat transmission network model taking transmission time delay of the heating network into consideration is established according to the heat transmission network; a terminal heat consumer model capable of reflecting indoor temperature is established; and a combined optimal dispatching model comprising conventional generators, wind power units, CHP units, electric boilers and heat storage tanks is established.

The invention relates to an addition type heat-conducting silicone rubber and a preparation method thereof. The addition type heat-conducting silicone rubber is characterized in that 100 weight portions of vinyl silicone oil and 200 weight portions to 500 weight portions of heat-conducting material are dewatered and mixed in a vacuum kneader for 30 to 200 minutes with the temperature of 100 to 150 DEG C and the vacuum degree of 0.06 to 0.099 MPa so as to obtain base material; under normal temperature, 0.5 weight portion to 1.5 weight portions of hydrogeneous silicone oil, 0.01 weight portion to 0.06 weight portion of inhibitor and 3 weight portions to 10 weight portions of diluent are added and stirred in a stirrer for 15 to 40 minutes so as to obtain A glue; 100 weight portions of base material are taken, 0.25 weight to 0.75 weight portion of platinum catalyst and 3 weight portions to 10 weight portions are added and stirred in the stirrer for 15 to 40 minutes so as to obtain B glue. The A glue and the B glue with the same weight portions are taken, mixed evenly and defoamed for 3 to 10 minutes at the vacuum degree of 0.06 to 0.09 MPa so as to obtain addition type heat-conducting silicone rubber. The heat-conducting silicone rubber is cured at normal temperature or low temperature, has good flow property and convenient use, has higher heat conductivity after fluidization and can be used for the components with the need of heat dissipation and heat transmission in the electronic appliance field.

A heat transfer engine having cooling and heating modes of reversible operation, in which heat can be effectively transferred within diverse user environments for cooling, heating and dehumidification applications. The heat transfer engine of the present invention includes a rotor structure which is rotatably supported within a stator structure. The stator has primary and secondary heat exchanging chambers in thermal isolation from each other. The rotor has primary and secondary heat transferring portions within which a closed fluid flow circuit is embodied. The closed fluid flow circuit within the rotor has a spiraled fluid-return passageway extending along its rotary shaft, and is charged with a refrigerant which is automatically circulated between the primary and secondary heat transferring portions of the rotor when the rotor is rotated within an optimized angular velocity range under the control of a temperature-responsive system controller. During the cooling mode of operation, the primary heat transfer portion of the rotor carries out an evaporation function within the primary heat exchanging chamber of the stator structure, while the secondary heat transfer portion of the rotor carries out a condenser function within the secondary heat exchanging chamber of the stator. During the cooling mode of operation, a vapor-compression refrigeration process is realized by the primary heat transfer portion of the rotor performing an evaporation function within the primary heat exchanging chamber of the stator structure, while the secondary heat transfer portion of the rotor performs a condenser function within the secondary heat exchanging chamber of the stator. During the heating mode of operation, a vapor-compression refrigeration process is realized by the primary heat transfer portion of the rotor performing a condenser function within the primary heat exchanging chamber of the stator structure, while the secondary heat transfer portion of the rotor performs an evaporation function within the secondary heat exchanging chamber of the stator. By virtue of the present invention, a technically feasible heat transfer engine is provided which avoids the need for conventional external compressors, while allowing the use of environmentally safe refrigerants. Various embodiments of the heat transfer engine are disclosed, in addition to methods of manufacture and fields and applications of use.