307results about How to "Improve heat exchange effect" patented technology

A heat exchanger (1), comprising: a heat exchange core (4) composed of a plurality of heat exchange tubes (9), a refrigerant inlet header (5) arranged toward one end of each heat exchange tube, and a refrigeration A refrigerant outlet header (6), and a refrigerant inflow header (7) and a refrigerant outflow header (8) disposed toward the other end of each heat exchange tube. The interior of the outlet header on which some of the heat exchange tubes are joined to communicate with the space (6b) is divided into two spaces (6a, 6b) by a flow-dividing resistance plate (26). A plurality of refrigerant circulation holes (27A-27D) having different shapes and/or sizes are formed in the resistance plate (26). The outlet headers have markings (28A-28D) on the outer surface for identifying the location of the refrigerant flow holes (27A-27D) and representing the shape and/or size of said holes. The heat exchanger exhibits high heat exchange performance when used as an evaporator.

The invention discloses a heat exchanger with a corrugated pipe coil structure provided with an internal duct and an external duct, which comprises an inlet, an outlet, a corrugated pipe, a dome, an internal ring bushing, an external ring bushing, a fan and a bracket. When fluid media to be in heat exchange flow in the corrugated pipe in the heat exchanger from the inlet, form a turbulent flow in a pipe wall with a corrugated structure and carry out heat exchange with air in the internal duct and the external duct outside the corrugated pipe via the wall of the corrugated pipe, the fan discharges air in the internal duct and the external duct, and the fluid media are discharged from the outlet after the heat exchange performed in the corrugated pipe in a spiral way. The heat exchanger has the advantages of high heat exchanger effectiveness, simple structural technology, light weight, integration, and the like, and the fluid media in the pipe coil after the heat exchange have even temperature, thereby the heat exchanger can be used for heat exchange of air, liquid and air-liquid mixing substances. When the corrugated pipe adopts resistant materials, the heat exchanger can be used for heat exchange for corrosive liquid media.

The invention discloses a controlling method of an air condition which includes the compressor, the room heat exchanger, the room fan and the controlling device. The character is in that: the electrical heater is set on the upper side of the room heat exchanger. The controlling method includes at least the follow processes: heating, the electrical heater heats and dries the room heat exchanger; mix, the mixing wind circles in the room machine; heat rejection, discharge the hot wind out of the room machine. After the air condition refrigerating or sucking the humid, the invention uses the linkage of the electrical heater, the room fan and up-down fans. It not needs to start the compressor but can do the drying operation to make the evaporator dry and move the dirty of the fan surface to inhibit the bacterium growth in evaporator surface. So it can improve the heat exchanging effect and prolong the using life.

The invention provides an evaporator and a cabinet air conditioner indoor unit equipped with the evaporator. Aiming at the wind field characteristics of the evaporator of blast type cabinet air conditioner, the invention improves the structure of evaporator of indoor unit. The lower part of the evaporator that has poor heat exchange adopts single-row evaporator design, and the upper part of the evaporator hat has sufficient heat exchange adopts double-row evaporator design. Thus, the heat exchange capability of each part of the evaporator can be fully utilized, so that all parts of the evaporator have uniform heat exchange, either assuring the heat exchange performance of the cabinet air conditioner or reducing cost. The invention has good heat exchange performance when being applied to the blast type conditioner indoor unit.

The invention relates to the field of flight equipment and discloses a fireproof unmanned aerial vehicle system for fire site surveying. The fireproof unmanned aerial vehicle system comprises an unmanned aerial vehicle and a fine controller controlling the unmanned aerial vehicle in a wireless communication mode. Electronic speed regulators are installed on corresponding arms respectively, and semiconductor chilling plates are arranged between the electronic speed regulators and the arms. The fireproof unmanned aerial vehicle system further comprises two or more signal bridging devices arranged independently and used for carrying out mutual bridging and realizing wireless bridging between the unmanned aerial vehicle and the fine controller. According to the fireproof unmanned aerial vehicle system, the whole is made of fireproof material resistant to high temperature, and therefore the unmanned aerial vehicle can be operated normally and carry out surveying after entering a high-temperature fire site; the semiconductor chilling plates are arranged for dissipating heat of the electronic speed regulators, and therefore the temperature of the electronic speed regulators does not exceed the highest limit temperature even in the fire site; the multiple signal bridging devices are arranged and are used for bridging controlling signals and data signals, and therefore the unmanned aerial vehicle and the fine controller can realize continuous communication.

The invention relates to the technical field of information and control, and relates to an automation technology, in particular to an integrated optimization control method for a circulating water system. The method comprises the following steps of: detecting an ambient temperature, ambient humidity, a circulating water cooling tower inlet temperature, an outlet temperature, cooling water pump energy consumption and cooling tower fan energy consumption by using a control system; controlling the flow quantity of a cooling water pump and the air quantity of a cooling tower fan in a variable frequency speed control mode; calculating the optimal regulating quantity of the air quantity of the cooling tower fan and the flow quantity of the cooling water pump in order to reach the lowest energy consumption under the condition of the conventional heat exchange quantity required by actual production according to acquired parameters; and controlling terminal equipment by using a frequency conversion actuating mechanism. The method has the advantages of reducing energy consumption, saving energy and water, and the like, and can be widely applied to occasions where cooling towers are used.

The invention discloses a coaxial composite welding method of laser spot welding and resistance spot welding, belonging to the technical field of welding. The method solves the problem of poor welding spot performance when the laser spot welding technology is,applied to an aluminum alloy material. The welding method of the invention is based on the existing resistance spot welding method of the base material to be welded. A top electrode in the laser spot welding method uses a hollow electrode. When performing the resistance spot welding on the base material to be welded, a laser beam passes through the center of the hollow electrode to perform the laser spot welding on the base material to be welded, so as to realize the coaxial composite of the laser spot welding and the resistance spot welding. The method of the invention is used as a welding technology.

The invention relates to an air temperature adjusting system for heat exchange type vehicles and vessels, which comprises an evaporator using alcohol refrigerant, condenser, an ejecting and sucking device, a pump, a heater and a liquid storage tank. The ejecting and sucking device is capable of sucking refrigerant in the evaporator and outputting the refrigerant to the condenser, and the heater is capable of absorbing heat of engine tail gas by means of heat exchanging to vaporize the refrigerant. The heater is connected between the ejecting and sucking device and the pump through a pipe, and the evaporator comprises both of or one of an air-conditioning evaporator and a cooling evaporator. The evaporator is disposed on an engine air inlet pipe or arranged in an engine air inlet filter and used for cooling air flowing into an engine, dropping of air inlet temperature can improve air sucking efficiency of the engine, the engine can be in or close to the optimum operating state, engine power is improved, fuel consumption is reduced, and waste gas emission is reduced.

The invention discloses a flexible cable used for a new energy automobile. The cable comprises a conductor and an insulation layer used for wrapping the conductor. The outer part of the insulation layer is provided with a cooling layer in a wrapped manner, and at least one cooling medium channel extended along the length direction of the insulation layer is disposed in the cooling layer, and is used to introduce the cooling medium for the cooling and the heat dissipation of the insulation layer. Heat energy radiated by the insulation layer outwardly is effectively, reliably, quickly, and greatly eliminated by the cooling medium, and then the heat energy radiated on the outer part of the cooling layer is reasonable, controllable, and safe, and then the special use requirement of the new energy automobile is satisfied. The flexible cable is in service and operated reliably, safely, and stably in various severe environments, and has advantages of simple structure, convenient forming, small forming difficulty, low forming costs, compact structure, good flexibility, excellent heat dissipation effect, high flame resistant performance, high reliability, good safety performance, and strong practicability.

The invention discloses a wastewater source heat pump water heater of residential buildings. The water heater comprises a refrigerant circulation loop, a wastewater collecting pipe (1.1), a wastewater discharge pipe (1.3), a running water pipe (2.1), a heating pipe (2.3), a wastewater heat recovery exchanger (5), a hot water transition pipe (2.2) and a wastewater transition pipe (1.2), wherein the wastewater collecting pipe (1.1) is communicated with the wastewater heat recovery exchanger (5), the wastewater heat recovery exchanger (5) is communicated with the wastewater transition pipe (1.2), the wastewater transition pipe (1.2) is communicated with a wastewater heat exchanger (4); and the running water pipe (2.1) is communicated with the wastewater heat recovery exchanger (5), the wastewater heat recovery exchanger (5) is communicated with the hot water transition pipe (2.2), and the hot water transition pipe (2.2) is communicated with a hot water heat exchanger (3). The energy efficiency ratio of the heat pump water heater is high and the condition that the compressor is damaged due to overload operation can be avoided.

The invention discloses a drying drum which comprises a drum body (3), a main drainage pipe (2) and branch drainage pipes (4), wherein hot airflow is input into the main drainage pipe (2) and the branch drainage pipes (4). The main drainage pipe axially extends into an inner cavity of the drum body from an inlet end (1) of the drum body, the branch drainage pipes are communicated with the main drainage pipe and used for draining hot airflow in the main drainage pipe to the inner cavity, and therefore turbulent flow is formed. When the hot airflow is input into the inlet end, a major part of the hot airflow enters the main drainage pipe, a small part of the hot airflow enters the space formed between the main drainage pipe and the inner wall of the drum body, and the hot airflow in the main drainage pipe flows everywhere in the inner cavity of the drum body through the branch drainage pipes which extend in the radial direction. The airflow which flows into the branch drainage pipes from the main drainage pipe and then is sprayed out has the higher speed, speed difference exists between the airflow and the hot airflow directly flowing into the inner cavity, a flow field in the inner cavity of the drum body generates strong disturbance due to the speed difference and the rotation of the drum, and turbulence intensity is enhanced, so that the good heat convection effect is good, and the energy consumption use ratio is improved.

The invention discloses a heat exchanger. The heat exchanger comprises a cooling tank body, longitudinal baffle plates and an upper end cover, wherein the section of the cooling tank body is square; four groups of tubes are transversely spaced away from one another in the cooling tank body along the horizontal direction; each group of tubes longitudinally comprise at least two tubes along the horizontal direction; one longitudinal baffle plate is arranged between every two adjacent groups of tubes; the longitudinal baffle plate on the left side is arranged between the first group of tubes and the second group of tubes; the middle longitudinal baffle plate is arranged between the second group of tubes and the third group of tubes; the longitudinal baffle plate on the right side is arranged between the third group of tubes and the fourth group of tubes. The heat exchanger has the characteristics of simple structure, arrangement of a plurality of groups of tubes, small occupied space, long cooling tube pass and good cooling effect; the heat exchange contact area between a heat medium flow and a cold medium flow of the spiral tubes is increased, the hot medium flow and the cold medium flow form a reverse flow, a hot medium and a cold medium both have higher temperature difference in the entire flow process, and the heat exchange effect is good.

The invention discloses a novel efficient total heat exchange membrane and a total heat exchanger. The total heat exchange membrane includes: a first support layer, which comprises a first high polymer, a first moisture absorbent, an antibacterial agent, an inorganic functional additive, and an inorganic salt; an active layer, which contains a second high polymer, a second moisture absorbent; and an optional second support layer. The first support layer is located between the second support layer and the active layer. The invention also discloses a preparation method of the total heat exchange membrane and the total heat exchanger using the membrane. The total heat exchange membrane provided by the invention has the advantages of excellent moisture permeability, effective blocking of harmful gas, good heat exchange performance, and less mixing of air supply and air exhaust, can provide fresh air to the indoor, remove foul and harmful air, and simultaneously recover sensible heat and latent heat.

An evaporator 30 has a header tank 31 comprising a header forming plate, a tube connecting plate 37 and an intermediate plate 38. The header forming plate is provided with outward bulging portions. A plurality of tube insertion holes are formed in the tube connecting plate 37. Communication holes 44 are formed in the intermediate plate 38 for causing the tube insertion holes to communicate with the interior of the corresponding outward bulging portion therethrough. At least one of the outward bulging portions serves as a refrigerant passing outward bulging portion for a refrigerant to flow therethrough longitudinally of the bulging portion. All the communication holes 44 in communication with the refrigerant passing bulging portion are held in communication by communication portions 46A to 46C for the communication holes 44 and the communication portions 46A to 46C to provide a refrigerant passageway 1. The refrigerant passageway 1 is altered in cross sectional area along the longitudinal direction thereof by adjusting the width of the communication portions 46A to 46C. The evaporator 30 is reduced in the number of components, can be fabricated by efficient work and exhibits improved heat exchange performance.

The present invention belongs to the field of chemical technology, and discloses one kind of corrosion inhibiting descaling agent. The corrosion inhibiting descaling agent contains mercaptobenzothiazole, hydroxy ethylidene diphosphonic acid, acrylic acid-acrylate-sulfonate copolymer, sodium humate, lignin, sodium hydroxide and water. The corrosion inhibiting descaling agent of the present invention is suitable for central air conditioning system, cooling water system, etc. After being added into circulating water system, the corrosion inhibiting descaling agent of the present invention can form one compact protecting layer on the surface of equipment or pipeline to reach effective corrosion inhibiting and scale-preventing effect.

The invention relates to a three-cylinder dryer of a dry-mixed mortar station, which comprises a drying cylinder, a feeding pipe, a discharging pipe and a rotary driving device, wherein the drying cylinder comprises an outer cylinder body, a conical middle cylinder body and a conical inner cylinder body, and inner lifting boards with columnar curved surfaces which are arranged spirally are formed on inner walls of the outer cylinder body, the conical middle cylinder body and the conical inner cylinder body respectively; a bottom board which is in the shape of a truncated cone is welded at the small end of the conical middle cylinder body, and the bottom board is fixed with a left side board of the drying cylinder and the left inner end of the outer cylinder body together through a plurality of arc-shaped blade-shaped connecting material guide boards II; the big end of the conical middle cylinder body is welded with a right side board of the drying cylinder and the right inner end of the outer cylinder body together through a plurality of arc-shaped blade-shaped connecting material guide boards I; and the small end of the conical inner cylinder body is welded on the right side board of the drying cylinder, and the big end of the conical inner cylinder body is fixedly connected with the interior of the bottom board of the middle cylinder body together through a plurality of arc-shaped blade-shaped connecting material guide boards III. The three-cylinder dryer has compact structure and high drying efficiency.

The invention belongs to radiating equipment, and particularly relates to a heat pipe radiator for a high-power LED lamp, which comprises an LED light source, a hollow box-shaped evaporation cavity and a pipeline connected onto the evaporation cavity, the evaporation cavity and the pipeline form a closed circulation loop, the evaporation cavity is provided with an evaporation port, a return port and a filling port, and the position of the evaporation port is higher than that of the return port. The heat pipe radiator solves the problems of low radiating efficiency, heavy weight and the like of an existing LED lamp aluminum profile radiator, light attenuation of LEDs is slowed down, and further the service life of the heat pipe radiator is prolonged.

The invention discloses a high-power plane heating unit liquid-cooling heat dissipating device which comprises a cooling liquid driving device (14) and a heat dissipator (13). The heat dissipator (13) is composed of a heat dissipating sectional material (18) and sealing plug blocks (12), the heat dissipating sectional material (18) is a flat-section structure with cavities, a heat dissipating face (2) and mounting faces (5) used for mounting of a plane heating unit are arranged on the surface of the heat dissipating sectional material (18), cooling liquid channels and mounting pipelines (3) are arranged inside the heat dissipating sectional material (18), and a liquid inlet (10) and a liquid outlet (11) of the heat dissipator are communicated with the cooling liquid channels. By adoption of the structure, the heat dissipating sectional material is formed at a time, can be cut according to the shape of the plane heating unit and can be provided with the liquid inlet and the liquid outlet at different positions, heat dissipating devices of different heat dissipating structures can be manufactured only through simple machining, multiple heat dissipators can be assembled in parallel to be matched with the width of the plane heating unit, and heat dissipating requirements of the plane heating units in different shapes are met.

Disclosed are a pallet (10) and a plasma machining apparatus. The pallet (10) is used for bearing a machined work-piece (14), and adjusting the temperature of the machined work-piece (14) by means of a heat exchange gas, wherein at least one bearing region of the machined work-piece is formed on the upper surface of the pallet (10); the shape and size of each bearing region of the machined work-piece are corresponding to the machined work-piece (14) to be borne; at least one recess (11) which is recessed towards the lower surface of the pallet is formed in a non-edge region (111) of each bearing region of the machined work-piece; the maximum diameter of a notch of each recess (11) is smaller than the minimum diameter of the borne surface of the machined work-piece (14) to be borne; intake holes (13) are distributed on the bottom surface of the recess (11); and the intake holes (13) are connected to a gas source of the heat exchange gas. The pallet (10) can not only improve the efficiency and uniformity of heat exchange between the heat exchange gas and the machined work-piece (14), but can also reduce the leakage amount of the heat exchange gas.