26results about How to "Increase the circulation area" patented technology

The invention provides a mixed flow heat exchange device for outputting hot water, which is characterized in that the connecting line of the vertexes of the section of a jet pipe is a square, a pipe wall is formed between the adjacent vertexes of the square, the pipe wall is bent, the bending direction of the bend faces the center of the square, and jet holes for jetting from the inside of the jet pipe to the outside of the jet pipe are formed in the pipe wall. The invention provides a heat exchange device adopting a novel square jet pipe, so that the mixing heat exchange effect of two fluids is better and more uniform, and the heat exchange efficiency is improved.

The application relates to the technical field of kitchen appliances, and discloses a range hood. The range hood comprises a fan assembly and a pipeline assembly, the fan assembly comprises a machine box and a fan which is obliquely arranged in the machine box, an air inlet of the machine box is arranged on the machine box, the pipeline assembly is connected with the machine box, an inner cavity of the pipeline assembly is communicated with the air inlet of the machine box, and a noise reduction outward expansion structure close to a wall and a flow guide outward expansion structure away from the wall are arranged at the connection position of the pipeline assembly and the machine box. Since the fan is obliquely arranged at a certain angle, the wide flow channel side area of the fan air inlet is farther away from the air inlet of the machine box, the airflow of the fan air inlet is beneficially flowed, the noise reflected by the noise reduction outward expansion structure has a certain phase angle with the noise direction of the fan, thereby canceling part of the noise energy, the outward expansion direction of the flow guide outward expansion structure is towards the kitchen internal space, the airflow turning angle is increased, the flow loss is reduced, the tail edge separation vortex is weakened, the effective flow area is increased, and the performance of the fan can be further improved.

The utility model provides a kind of valve group and compressor of miniaturization reciprocating compressor, it is related to compressor field, to the problem that the temperature of existing small compressor cylinder head is too high, gas flow resistance increases and leads to efficiency reduction, by the offset structure of valve plate on the valve plate subassembly suction hole, enlarge suction valve port flow area, reduce suction resistance, reduce the pressure loss and friction heat in suction process, to reduce suction overheating, from the source to relieve cylinder head overheating problem, allow to adopt smaller size cylinder hole, meet the demand of compressor miniaturization, the valve tongue both sides of suction valve piece are provided with contraction part to form waist, exhaust hole is arranged between two sides waist, adapt to the compact space of miniaturization valve group, suction muffler outlet and cylinder cover keep apart, leave gap, cut off the heat conduction path between cylinder cover and suction muffler, form heat insulation, reduce suction overheating, reduce cylinder head temperature benign cycle, improve miniaturization reciprocating compressor efficiency.

This invention relates to a low-noise optical module three-temperature testing device, comprising a test box with a test cavity formed inside. An air inlet pipe is connected to the test box and communicates with the test cavity. A first silencing cavity is also formed inside the test box, and a first exhaust channel communicating with the first silencing cavity is provided on the test box. A duct is also connected to the test box, connecting the test cavity and the first silencing cavity. By setting up the first silencing cavity and connecting it to the test cavity via the duct, this invention not only extends the gas flow path within the test box and serves to store airflow, but also significantly increases the gas flow area and the diffuse reflection area and number of reflections within the test box, thereby reducing gas velocity and noise energy, achieving noise reduction. The test cavity-duct-first silencing cavity can form a Venturi effect, resulting in better noise reduction.

The utility model provides a large -diameter high pressure anti -explosion hose relates to the field of hose, the utility model discloses the built -in hose and a plurality of connecting blocks are included to the built -in hose, the utility model discloses the anti -explosion device is set up, and the use of large -diameter hose is used in building engineering to carry out high pressure cleaning operation when using, and the strength of built -in hose can be enhanced with a plurality of reinforcing ribs and reinforcing wire mesh, and the pressure -bearing capacity is improved, so as to reduce the possibility of blasting, when built -in hose breaks, it will enter between the built -in hose and the built -in hose, increase the flow area, carry out the first step pressure -relief explosion -proof, if pressure still continues to increase, the pressure -relief mechanism on the built -in hose will carry out secondary pressure -relief treatment, thereby effectively reduce the problem of pipe wall fatigue damage, improve cleaning efficiency, avoid the disorderly injection of high pressure water flow to the operator cause physical injury, or the situation of damaging peripheral facilities occurs, reduce the security risk when using.

The invention discloses an air compressor radial air entraining device with the adjustable drum hole flow area, and belongs to the technical field of air compressor air entraining systems, the air compressor radial air entraining device comprises a rotating main shaft, the periphery of the rotating main shaft is sequentially sleeved with a first-stage movable disc, a drum and a second-stage movable disc, a plurality of air entraining through holes are formed in the peripheral face of the drum, and the air entraining through holes are communicated with the first-stage movable disc. A blocking piece is arranged in the drum, and the blocking piece can adjust the flow area of the drum. The device has the effect of adjusting the flow area of the drum.

The utility model belongs to the field of magnetic suspension refrigerant compressor, concretely relates to a kind of cooling structure of magnetic suspension refrigerant compressor, including compressor shell, stator core and motor rotor, and refrigerant inlet and refrigerant outlet are equipped on compressor shell;Air gap is formed between stator core and motor rotor;Spiral groove is processed on the outer circle surface of motor rotor and located in air gap region, and the outer circle of stator core is sleeved with cooling jacket, and the outer circle of cooling jacket is processed with spiral flow channel, and one side of cooling jacket is equipped with medium guide gap;After refrigerant enters from refrigerant inlet, it flows through air gap and the spiral flow channel of cooling jacket in turn, and finally flows out from refrigerant outlet, forming double cooling path to the inside and outside of stator core;The utility model effectively solves the problem that magnetic suspension motor faces narrow air gap, large refrigerant flow resistance, poor cooling, and complex cooling system and high leakage risk caused by multi-path cooling scheme.

The application discloses a ball valve, which comprises a valve core ball, the valve core ball comprises an inner cavity, a first flow-through port and a second flow-through port, the first flow-through port and the second flow-through port are communicated with the inner cavity; the central axis of the first flow-through port is defined as a third central axis, the sectional area of the section of at least a part of the inner cavity perpendicular to the third central axis is greater than the sectional area of the section of the first flow-through port perpendicular to the third central axis; the central axis of the second flow-through port is defined as a fourth central axis, the fourth central axis and the third central axis are arranged at an angle. In the above scheme, the sectional area of the section of at least a part of the inner cavity of the valve core ball perpendicular to the third central axis can be greater than the sectional area of the section of the first flow-through port perpendicular to the third central axis, the flow-through area of the inner cavity can be effectively increased, so that the flow resistance of the inner cavity can be reduced, and the flow-through capacity of the ball valve can be improved.

The invention relates to an indoor unit and an air conditioner, and relates to the technical field of air conditioners. According to the indoor unit, a shell comprises a first air opening and a second air opening; the fixed volute comprises a first air duct outlet and a second air duct outlet; the first filtering assembly can cover or avoid the first air opening; the second filtering assembly divides the second air opening into an air outlet and an air return opening. The switching assembly can open and close the first air duct outlet, the second air duct outlet, the air return port and the air outlet; in the first air outlet state, the switching assembly opens the first air duct outlet, closes the second air duct outlet, opens the air return opening and closes the air outlet, and the first filtering assembly avoids the first air opening; in the second air outlet state, the switching assembly closes the first air duct outlet, opens the second air duct outlet, closes the air return opening and opens the air outlet, and the first filtering assembly covers the first air opening. According to the technical scheme, the problem that a filtering structure of an existing two-way air outlet air conditioner is difficult to adapt to the airflow direction requirement can be solved.

The invention discloses an air supply device with an adjustable flow area of a prewhirl blade channel of an aero-engine, and belongs to the technical field of aero-engines, the air supply device comprises a static part, a rotating part and a blade disc part, the static part comprises a fixed disc and an outer static disc, and the rotating part comprises a driving disc and an auxiliary disc; the blade disc component comprises a fixed part and a movable part, the fixed part comprises a blade disc body, a plurality of fixed blades are fixed to the peripheral face of the blade disc body and arranged along the periphery of the blade disc body at equal intervals, and the movable part comprises a plurality of movable blades. The movable blades are arranged in the circumferential direction of the blade disc body at equal intervals and correspond to the fixed blades in a one-to-one mode, blocking pieces are arranged on the side faces, close to the corresponding fixed blades, of the movable blades, and driving pieces used for driving the movable blades to rotate in the circumferential direction of the blade disc body are arranged on the fixed disc. The application has the effect of adjusting the flow area of the pre-whirl blade channel.

This utility model provides a detachable intelligent drive synchronous motor, relating to the field of motor technology. It includes a first housing, with a sealing ring fixedly installed on one side of the first housing. A fastening component is disposed inside the sealing ring, and a coating is disposed on the outer periphery of the sealing ring. A rear cover is fixedly installed on the side of the first housing away from the sealing ring, and a fixing bracket is disposed inside the side of the first housing closer to the rear cover. In this utility model, on the one hand, the fastening component, in conjunction with the connecting seat and screw, makes the connection between the first and second housings more stable, preventing loosening of the connection during long-term use; on the other hand, the heat dissipation mesh on the rear cover increases the airflow area, the heat dissipation fins on the outer periphery of the first and second housings increase the contact area with air, and the combined action of the fan and heat dissipation fins improves the motor's heat dissipation efficiency.

The application provides a hydraulic control system, method and excavator. The hydraulic control system comprises: a first oil circuit, which is communicated with a rodless cavity of a boom cylinder; a second oil circuit, which is communicated with an oil tank; a third oil circuit, which is communicated with a rod cavity of the boom cylinder; a proportional valve, which comprises an oil inlet communicated with the first oil circuit, an oil return communicated with the second oil circuit and an oil outlet communicated with the third oil circuit; wherein the proportional valve comprises a forward proportional valve and a reverse proportional valve arranged in parallel, the oil return of the forward proportional valve is kept communicated with the oil inlet, and the oil return of the reverse proportional valve is kept communicated with the oil outlet. When the boom is lowered, the hydraulic oil flowing out of the rodless cavity can flow to the oil tank through the forward proportional valve, so that the hydraulic oil can flow more and more timely into the rod cavity through the reverse proportional valve with a larger flow area, thereby preventing the boom cylinder from being sucked or exploded, avoiding causing significant damage to the hydraulic control system and elements thereof, and prolonging the service life of the hydraulic control system.

This application relates to the field of material batching, and in particular to a multi-circulating fluidized bed reactor, which includes a circulating fluidization component and a separation component. The circulating fluidization component includes two symmetrically arranged fluidized beds, each with a feed pipe, a discharge pipe, and an outlet pipe at the top, and an air inlet and a return pipe located on one side of the air inlet at the bottom. The fluidized beds contain heat-conducting particles. The separation component is located between the two fluidized beds and includes two symmetrically arranged cyclone separators. The top of each cyclone separator is connected to the outlet pipe of one of the fluidized beds in the circulating fluidization component, and the bottom is connected to the return pipe of the other fluidized bed. The top of each cyclone separator is provided with an air outlet pipe. This application enables materials to circulate and fluidize between multiple fluidized beds, avoiding the problems of uneven particle distribution and short material residence time caused by the difference in terminal velocity between heat-conducting particles and material particles.

The utility model relates to the technical field of automobile air conditioner, disclose a kind of air conditioner box mixed air ratio optimization temperature damper and air conditioner box based on door stop cooperation, and air conditioner box mixed air ratio optimization temperature damper based on door stop cooperation includes door stop and temperature damper. Door stop includes first door stop, second door stop and third door stop, and cold channel is between first door stop and third door stop, and hot channel is between third door stop and second door stop. Temperature damper includes damper body and baffle, and baffle is connected to one end of damper body in the moving direction of temperature damper and close to second door stop, and the length of baffle in the direction perpendicular to the moving direction of temperature damper is consistent with the length of damper body. When temperature damper leaves full cold position, baffle is used to reduce the gap between temperature damper and hot channel inner wall. Temperature damper moves to full hot position, and the projection of third door stop in the thickness direction of temperature damper covers baffle.

The utility model discloses a kind of double-cycle water cooling devices for ship propulsion motor, a kind of double-cycle water cooling devices for ship propulsion motor, including double-cycle cooling assembly, the double-cycle cooling assembly including outer water inlet valve, heat exchanger, circulating water pump, expansion water tank and cooling liquid inlet valve, water inlet, water outlet, cooling liquid inlet and cooling liquid outlet are set on heat exchanger, after forming outer circulation channel between water inlet and water outlet on heat exchanger with the series connection of outer water inlet valve, after forming internal circulation cooling loop between cooling liquid inlet and cooling liquid outlet on heat exchanger with the series connection of circulating water pump, expansion water tank, cooling liquid inlet valve and ship propulsion motor, it is characterized by: in double-cycle cooling assembly is installed in a box, it has certain protection level, can reduce the damage caused by the adverse environment of engine room to internal equipment, device, and integrated degree is high, modularization, save installation space.

The utility model provides a kind of water-saving energy-saving type fog dispersal device, including box, the fog dispersal module with cross section being rhombic is equipped in box, fog dispersal module extends from the inside wall of one side of box to the inside wall of other side;Fog dispersal module lower end is connected with baffle, baffle extends downward and is fixed to box bottom wall, so that fog dispersal module, baffle, box side wall and bottom wall are collectively enclosed to form first cavity;The side surface and bottom of box located at first cavity position are equipped with new cold air louvre and airflow distribution louvre respectively;Box middle part is equipped with resistance reduction louvre, and its one end is connected with box inner wall;The utility model structure design is simple, can make that equipment outlet near saturated moist air mixes with fresh air, condenses, and separates out condensate water, so that condensate water falls back to equipment, secondary recovery, to reach the purpose of water saving, by actual use, water can be saved 10-40%.

The invention relates to the technical field of valves, in particular to a power-level two-way hydraulic control main valve which comprises a main valve body, a valve sleeve is arranged in the main valve body, a valve element is arranged in the valve sleeve, the valve element is connected with a two-way hydraulic control device, the two-way hydraulic control device controls the valve element to act, the valve is controlled through high-pressure oil, and the valve is stable in state and good in anti-seismic effect. The action speed of the valve can be controlled, the valve is driven to act through high-pressure oil under the small driving power of the electromagnetic valve, then the driving force of the valve is increased, and the corresponding speed of the valve is increased.

The application relates to the technical field of mechanical hydraulic pressure, in particular to a mechanical hydraulic pressure device for soil remediation, which comprises a hydraulic oil tank, the top of the hydraulic oil tank is fixedly connected with a hydraulic pump device, the surface of the hydraulic pump device is electrically connected with a hydraulic control device, and the two ends of the hydraulic pump device are fixedly connected with filter devices fixedly connected to the top of the hydraulic oil tank; when the hydraulic oil opens the pressure relief mechanism, the trigger mechanism is triggered in time, the trigger mechanism warns the surrounding staff, meanwhile, the trigger mechanism feeds back to the adjusting mechanism, the adjusting mechanism timely switches the filter oil way, the staff timely replaces the blocked filter under the premise of not stopping, which not only guarantees the normal operation of the mechanical hydraulic pressure device for soil remediation, but also reduces the resistance of the hydraulic oil flow, so that the overall efficiency of the mechanical hydraulic pressure device for soil remediation is improved.

The utility model relates to the technical field of scroll compressors, in particular to a pressure ratio adjusting structure for a scroll compressor and the scroll compressor, the pressure ratio adjusting structure for the scroll compressor comprises a fixed disc component, an exhaust chamber is arranged on one side of the fixed disc component, and fixed scroll blades are arranged on the other side of the fixed disc component; the movable disc component is provided with movable vortex blades, the movable vortex blades are meshed with the fixed vortex blades, and a medium-pressure cavity and a high-pressure cavity are defined by the fixed vortex blades and the movable vortex blades; the communicating holes are formed in the fixed disc component, strip-shaped middle parts and arc-shaped end parts are formed in the communicating holes, and the communicating holes can communicate the exhaust cavity with the medium-pressure cavity or the high-pressure cavity; the plurality of communication holes can be simultaneously kept open or closed through the orbiting scroll blades. According to the pressure ratio adjusting structure for the scroll compressor and the scroll compressor, the problem that fluid cannot be effectively discharged in time in the advanced exhaust stage of an existing scroll compressor can be solved.

The utility model discloses a dustproof noise reduction automobile air channel relates to automobile parts technical field, and it is connected with the air inlet pipe head in the air inlet end of air channel pipe body, the inside installation of air inlet pipe head has first dust screen and second dust screen, the mesh diameter of second dust screen is less than the mesh diameter of first dust screen, the middle part of first dust screen and second dust screen is all set to concave hemispherical shape, the inner wall of air channel pipe body is provided with sound absorption bubble cotton layer, one side of sound absorption bubble cotton layer is set in wave type away from the inner wall of air channel pipe body, the inner wall of air channel pipe body is fixed with a plurality of convex post, and the convex post is nested in sound absorption bubble cotton layer. The utility model can effectively intercept the impurity in air, and the air inlet pipe head is convenient to disassemble and clean, and the setting of sound absorption bubble cotton layer in air channel pipe body can effectively disperse the air direction, reduce the wind speed, reduce the sound frequency, thereby reduce the pneumatic noise in air channel pipe body.

The embodiment of the utility model provides an evaporator, a refrigerant system and a refrigerating device. The evaporator comprises a heat exchange pipe and a plurality of fins arranged on the heat exchange pipe in a sleeving mode, the heat exchange pipe comprises a first header pipe, a first pipe connector, a plurality of branch pipes, a second pipe connector and a second header pipe, the first pipe connector is provided with a first connector and a plurality of second connectors, and one end of the first header pipe communicates with the first connector of the first pipe connector; one ends of the branch pipelines are communicated with the second connectors of the first pipe connector respectively, the second pipe connector is provided with a third connector and a plurality of fourth connectors, the other ends of the branch pipelines are communicated with the fourth connectors of the second pipe connector respectively, and one end of the second header pipe is communicated with the third connector of the second pipe connector. According to the evaporator provided by the embodiment of the invention, the pressure drop of the evaporation side of the refrigerant system can be reduced, so that the refrigeration and / or heating performance of the refrigerant system is kept stable, and the energy efficiency of the refrigerant system is kept stable.

The invention relates to the technical field of industrial torches, in particular to a self-operated lifting variable-sectional-area discharging device which comprises a torch cylinder, a gas inlet pipeline is fixedly connected to the side wall of the torch cylinder, a gas outlet inner cavity is formed in the torch cylinder, a gas collecting plate is arranged in the gas outlet inner cavity, and the gas collecting plate is fixedly mounted at the gas outlet end of the gas outlet inner cavity; a gas outlet is formed in the middle of the gas collecting plate, unorganized combustible gas needing to be discharged can enter the gas outlet inner cavity of the torch barrel through the gas inlet pipeline, then can rise to pass through a bundle of the gas collecting plate to be discharged from the gas outlet, and then is blown to the lifting gas blocking plate located on the gas outlet. The impact force of gas exhausted from the gas outlet can be increased, then the lifting gas blocking plate can be pushed to ascend, when the lifting gas blocking plate ascends, the fan-shaped moving plate can slide into the fan-shaped sliding groove, the circulation area is increased, the use requirement is met, on the contrary, the fan-shaped moving plate can be shrunk, flexibility and convenience are achieved, and automatic adjustment can be achieved according to the gas flow.

The present application relates to the technical field of agricultural machinery, in particular to a precision speed-adjustable hydraulic drive fan for air-blowing no-tillage seeding machine, which comprises a fan shell, a hydraulic motor is fixedly installed on the outer wall of the fan shell, a plurality of oil inlet pipes are fixedly communicated with the oil inlet port of the hydraulic motor, an air exhaust pipe is fixedly communicated with the circumferential side wall of the fan shell, and a self-adaptive speed regulation assembly is fixedly communicated with the top end of the air exhaust pipe. The present application adopts the mode of driving the impeller to rotate by the hydraulic motor to replace the traditional mechanical transmission to drive the fan to operate, effectively improves the safety and reliability of the air-blowing seeding fan equipment operation, can accurately detect the seed particle size and instantly adaptively adjust the air-blowing speed of the seeds according to the seed particle size, effectively improves the air-blowing seeding quality, and can adaptively adjust the feeding vibration frequency according to different particle size seeds, so that the seed sowing density is uniform, and the uniformity and continuity of seed sowing are improved.

The utility model discloses an agricultural planting germination accelerating device which comprises a water pool, a germination accelerating device body is installed on the inner side of the water pool, a speed adjusting device is arranged on the outer side of the water pool, the speed adjusting device comprises an input pipe, a distribution pipe, an adjusting sleeve, an adjusting plate, an adjusting shaft, an adjusting groove and a movable shaft, the adjusting shaft and the movable shaft are installed on the adjusting plate, and one end of the movable shaft is connected with the distribution pipe; one end of the adjusting shaft is located in the adjusting groove, the adjusting groove is formed in one side of the input pipe, a locking mechanism is installed on the outer side of the distribution pipe and comprises a locking sleeve, a movable plate, a movable hole, a movable rod, a locking block, a locking spring and a locking block, the locking sleeve is installed on the outer side of the distribution pipe in a sliding mode, the movable hole is formed in the movable plate, the movable rod is connected to one side of the locking sleeve, and the locking spring is connected to the locking block. According to the device, full contact between seeds and oxygen and between the seeds and water is guaranteed, and on the basis that the oxygen conveying speed is flexibly adjusted, the stability of a structure after the conveying speed is adjusted is guaranteed.

The invention provides an air conditioner control method, an air conditioner and a readable storage medium. According to the air conditioner control method, operation in a refrigeration mode is controlled, and the rotating speed of an outdoor fan is controlled according to a preset control strategy corresponding to the refrigeration mode; acquiring an air inlet detection temperature and a fin detection temperature in real time; when the air inlet detection temperature is larger than a first preset temperature value or the fin detection temperature is larger than a second preset temperature value, the outdoor fan is controlled to operate in an overclocking mode, and the flow area of the throttling device is controlled to be increased; the second preset temperature value is greater than the first preset temperature value; the overclocking mode comprises the step of increasing the rotating speed of the outdoor fan according to a preset amplitude. The air conditioner and the readable storage medium can realize the air conditioner control method. The invention mainly solves the problem that the compressor is overheated after the wind power is enhanced at a relatively closed machine position at high temperature.