38results about How to "Shorten the circulation distance" patented technology

The invention discloses a supercharged diesel engine EGR (Exhaust Gas Recirculation) system intelligent cooling device, comprising an EGR mixer (3), a mechanical water pump (4), an electric control fan (5), a radiator (6), a thermolator (11), an EGR cooler (13), an electric control EGR valve (14), an engine ECU (Electronic Control Unit) (18), a temperature sensor (19), an exhaust gas intercooler (8) and an electric control two-position three-way valve (12), wherein an inlet of the electric control two-position three-way valve (12) is communicated with a gas outlet of the EGR cooler (13); outlets in two ends of the electric control two-position three-way valve (12) are respectively communicated with an exhaust gas inlet of the EGR mixer (3) and a gas inlet of the exhaust gas intercooler (8); a gas outlet of the exhaust gas intercooler (8) is communicated with the exhaust gas inlet of the EGR mixer (3); the electric control EGR valve (14), the electric control fan (5), the temperature sensor (19) and the electric control two-position three-way valve (12) are respectively connected with the engine ECU (18) electrically.

The invention discloses a high-power light-gathering solar cell chip, which comprises a solar cell epitaxial overlay, latticed metal nano-electrodes, grid electrodes and a transparent conducting layer, wherein the latticed metal nano-electrodes cover on the surface of the solar cell epitaxial overlay; the grid electrodes are formed on the latticed metal nano-electrodes; and the transparent conducting layer is formed on the latticed metal nano-electrodes, and is in ohmic contact with the solar cell epitaxial overlay. The transparent conducting layer is in ohmic contact with the surface of the solar cell epitaxial overlay on a large area, so that the contact resistance of the electrodes and a cell epitaxial sheet is reduced greatly; the latticed metal nano-electrodes are embedded into the transparent conducting layer, so that the conducting capability of the transparent conducting layer is increased greatly, and the problem of insufficient conducting capability of the transparent conducting layer under a high-power light-gathering condition is solved; and the electrical conductivity of the transparent conducting layer is increased, so that the grid electrodes can be designed with larger distances, and the utilization ratio of sunlight is increased.

The invention provides an outdoor modular refrigerating module used for conducting refrigeration on a cabinet module. The cabinet module comprises a shell, wherein the side face of the shell is provided with an opening, and the shell is internally provided with a cold channel and a hot channel which are isolated through a cabinet. The refrigerating module comprises a case and a refrigerating module body arranged in the case, wherein the case is provided with an air inlet, an exhaust outlet and an air outlet which is connected with the opening in the shell in a butted manner, and the refrigerating module body comprises an air inlet cavity which communicates the air inlet with the cold channel, an air return cavity which communicates with the hot channel, a direct air inlet unit which is arranged at an inlet of the air inlet cavity, an air wall unit which is arranged at an outlet of the air inlet cavity and an air exhaust unit arranged at the exhaust outlet. The refrigerating module is manufactured, assembled and adjusted in a factory in advance and then conveyed to the scene, and then butt-joint installation of the refrigerating module and the cabinet module is completed, so that the building efficiency of a refrigerating system is greatly improved, the on-site construction workload is reduced, and thorough decoupling with a machine room is achieved.

The invention relates to a ventilated defrosting device arranged on a refrigerator door body and a refrigerator. The refrigerator door body comprises a shell and an inner container. The ventilated defrosting device comprises a molecular sieve box located between the shell and the inner container and enabling the interior and the exterior of the refrigerator to be communicated. According to the ventilated defrosting device arranged on the refrigerator door body and the refrigerator, the molecular sieve box is adopted to connect the inner side and the outer side of a refrigerator body, and the ventilated defrosting device is simple in mounting structure, easy to operate and free of other hoses in connection; the overall structure is suitable for production of different foaming clamps used in the rotating die combination and up-down die combination processes of the refrigerator door body, and the problems that it is difficult to open a door due to negative pressure in the refrigerator, and energy consumption is high due to frosting are solved effectively.

The invention discloses a supercharged diesel engine EGR (Exhaust Gas Recirculation) system intelligent cooling device, comprising an EGR mixer (3), a mechanical water pump (4), an electric control fan (5), a radiator (6), a thermolator (11), an EGR cooler (13), an electric control EGR valve (14), an engine ECU (Electronic Control Unit) (18), a temperature sensor (19), an exhaust gas intercooler (8) and an electric control two-position three-way valve (12), wherein an inlet of the electric control two-position three-way valve (12) is communicated with a gas outlet of the EGR cooler (13); outlets in two ends of the electric control two-position three-way valve (12) are respectively communicated with an exhaust gas inlet of the EGR mixer (3) and a gas inlet of the exhaust gas intercooler (8); a gas outlet of the exhaust gas intercooler (8) is communicated with the exhaust gas inlet of the EGR mixer (3); the electric control EGR valve (14), the electric control fan (5), the temperature sensor (19) and the electric control two-position three-way valve (12) are respectively connected with the engine ECU (18) electrically.

The invention relates to a high-handling-capacity low-temperature vacuum evaporator which comprises an evaporation tank, wherein the evaporation tank is provided with a steam outlet and a concentratedsolution outlet; a heat exchanger arranged in the evaporation tank; a heat source device, wherein the heat source device includes: compressor units and air inlet ports, the compressor unit comprisesa plurality of compressors which are arranged in parallel, each compressor is connected with the air inlet port and the heat exchanger, and the air inlet port is used for distributing a gaseous refrigerant into each compressor to form a heat exchange medium provided for the heat exchanger so as to heat the waste liquid in the evaporation tank and evaporate the waste liquid into water vapor; and the pressure reducing device is used for vacuumizing the evaporation tank. The high-handling-capacity low-temperature vacuum evaporator has the advantages that the treatment capacity can be greatly increased, and the high heat exchange efficiency and the high effluent quality can be realized at lower cost.

The invention discloses a planetary reduction gear, a drive axle assembly and a vehicle. The planetary reduction gear comprises a shell, a gear ring, a planet wheel assembly, a planet carrier, a planet wheel axle and an oil guide piece; an oil pool for containing lubricating oil is formed in the shell, the gear ring is fixedly connected with the shell, the planet wheel assembly is meshed and matched with the gear ring, the planet wheel axle is arranged on the planet carrier, the planet wheel assembly sleeves on the planet wheel axle, a bearing is arranged between the planet wheel assembly andthe planet wheel axle, and an oil guide flow path is arranged in the planet wheel axle; an oil inlet and an oil outlet communicating with the oil guide flow path are formed in the planet wheel axle, the oil guide piece is connected with the planet carrier so as to be driven by the planet carrier to rotate, a part of the oil guide piece is located in the oil pool, the oil guide piece is constructedto guide the lubricating oil in the oil pool to the oil inlet during rotation, and the lubricating oil in the oil guide flow path enters the bearing through the oil outlet. According to the planetaryreduction gear, the oil guide piece is arranged on the planet carrier, so that the lubricating efficiency and the lubricating effect of the planetary reduction gear are greatly improved.

The invention discloses an antenna assembly and a mobile terminal. The antenna assembly comprises a metal frame, a matching circuit, an antenna wire and a tuning module. The metal frame is provided with a feed point, and the matching circuit is connected with the feed point on the metal frame. One end of the antenna wire is connected with the feed point, and the other end of the antenna wire is connected with the tuning module; the antenna wiring is arranged between the tuning module and the matching circuit, the antenna wiring and the metal frame achieve shunting, the circulation distance ofcurrent between the tuning module and the feed point is equivalently shortened, and therefore the tuning range and bandwidth width are improved. The connection of the antenna wiring and the tuning module is equivalent to the addition of an impedance-adjustable parallel circuit at the feed point, thereby playing a role in impedance tuning, reducing the return loss of the antenna, and improving theresonant frequency range of the antenna while guaranteeing the transmission efficiency of the circuit.

The invention provides a wall-mounted-type air conditioner indoor unit which comprises a shell, a heat exchanger arranged in the shell, a first air spraying part arranged in a first air supplying opening and a second air spraying part arranged in a second air supplying opening and further comprises first air supplying assemblies and second air supplying assemblies which are arranged in the shell at intervals. The shell comprises a housing and a front panel arranged in front of the housing. An air feeding opening, the long circular first air supplying opening and the long circular second air supplying opening are formed in the front panel. The shell is obliquely downwards arranged relative to a supporting wall body to enable the air supplying openings to face the oblique lower portion. First air spraying openings and second air spraying openings for allowing heat-exchanged air flows to be sprayed out are formed in the inner circumferential walls of the first air spraying part and the second air spraying part correspondingly. The heat-exchanged air flows drive environment air in center air draft holes of the first air spraying part and the second air spraying part to be sent out. Thefirst air supplying assemblies and the second air supplying assemblies are used for providing the heat-exchanged air flows to the first air spraying part and the second air spraying part correspondingly. According to the scheme, falling of dust on the openings is avoided, the air supplying volume is enlarged, and thus the indoor temperature is overall evenly decreased.

The invention relates to the field of telegraph pole production equipment, and particularly discloses a telegraph pole production line. The telegraph pole production line comprises a cage framework line, an irrigation line, a centrifugal line, a cleaning line, rails and rotary discs, wherein the irrigation line is provided with vertical crossed transfer paths, the cleaning line is buried in a foundation, the rails used for transferring materials are arranged among the production lines, and the rotary discs are arranged among the crossed parts of the rails. According to the telegraph pole production line, the transfer routes of the irrigation line are designed to be vertically distributed in a crossed manner, the rotary discs are arranged at the crossed positions of the transfer rails for turning, so that the transfer distance of the materials is shortened, the production floor area is saved, and furthermore, the transfer production efficiency is also improved; by additionally arranging the cleaning line buried inside the foundation, a used mold is cleaned and recycled in time, so that the labor cost and the time cost are reduced, and the mold transfer space is also saved; and a dust remover and a protective plate are additionally arranged in a concrete stirring line and the centrifugal line respectively, dust diffusion and concrete bonding can be prevented, environmental pollution in a workshop is avoided, and health hazards are eliminated.

The invention discloses aluminum bar casting cooling equipment, and relates to the technical field of fusion casting. The aluminum bar casting cooling equipment specifically comprises a fixed outer cylinder, a cooling device and an air outlet device, wherein an air cooler is fixedly connected to one side of the fixed outer cylinder, the two ends of the fixed outer cylinder penetrate through and communicate with a water conveying pipe cooling device, the cooling device is arranged in the fixed outer cylinder, the two ends of the cooling device communicate with a water conveying pipe, the air outlet device is arranged on one side of the fixed outer cylinder, the air outlet device communicates with one side of the fixed outer cylinder, the cooling device comprises a cooling cylinder, air holes are formed in the side face of the cooling cylinder, and the two ends of the cooling cylinder are rotationally connected with connecting shafts through bearings. According to the aluminum bar casting cooling equipment, cold air of all parts can make contact with a spiral pipe as much as possible and conduct heat exchange with hot water in the spiral pipe, the cooling efficiency can be improved conveniently, air circulation is more violent, and dead corners generated in the fixed outer barrel and the cooling barrel are avoided.

The invention discloses a multifunctional plug-in glue attaching mechanism based on a new energy battery. The multifunctional plug-in glue attaching mechanism comprises a glue attaching assembly, the glue attaching assembly comprises a glue attaching frame, one side of the outer surface of the glue attaching frame is movably sleeved with a first twisting piece, the middle of the glue attaching frame is fixedly sleeved with a stretching adjusting piece, and the outer surface of the stretching adjusting piece is movably sleeved with a second twisting piece; and the middle of the inner surface of the glue attaching frame is movably sleeved with a stretching adjusting table, the top of the stretching adjusting table is fixedly sleeved with a special-shaped limiting assembly, the top of the special-shaped limiting assembly is fixedly connected with a rotating guide disc in a clamped mode, the top of the rotating guide disc is movably sleeved with a rotating connecting disc, and the top of the rotating connecting disc is movably connected with a battery assembly. By arranging the special-shaped limiting assembly and other devices, sliding transmission can be conducted during glue attaching, battery assemblies and the like can be automatically discharged and conveyed after rubberizing is completed, and therefore comprehensive multifunctional automation is achieved, and the machining time is greatly shortened.

The invention discloses 5G radio frequency front end assembling equipment, which comprises a module assembling unit and a circuit forming unit which are sequentially arranged along an assembling sequence, wherein the module assembling unit comprises a substrate forming device and a chip mounting device; the circuit forming unit comprises a chip plastic packaging device and a circuit etching device; and the chip plastic packaging device comprises a sealing box body, a first sealing isolation layer and a sealing cavity, and a workpiece rotating device, a plastic packaging forming device and a high-pressure generating device are arranged in the sealing cavity. The invention further discloses an assembling method of 5G radio frequency front end assembling equipment. According to the invention, through the arrangement of the module assembling unit, under a streamlined assembling mode, high-precision and high-efficiency completion of compounding of multiple layers of substrates and assembling of chips is realized, the chip plastic packaging device adopts organic matter solidification to form a plastic packaging layer with the planarization reaching the standard, and the circuit etching device prepares a circuit network through a selective etching process. Quality requirements are strictly controlled, and good assembling precision of the substrate and the chip is guaranteed.

The invention discloses a crystal silicon production factory building. The crystal silicon production factory building includes a factory building. The crystal silicon production factory building is characterized in that crystal silicon production lines are arranged in the left and right directions in the factory building, functional secondary rooms and power facilities are installed on the upperand lower sides of the factory building and on both sides of the crystal silicon production lines, and the power facilities are located on the sides of the middles of the crystalline silicon production lines. The crystalline silicon production factory building has a compact structure, so that the length of a required production area is effectively shortened, the land use efficiency is improved, land resources are saved, production equipment is closely arranged under the premise of satisfying safety clearance requirements, the material transfer distance is shortened, and the transfer capacity and efficiency are improved; besides, the power facilities are close to the middles of loading devices, so that the distance of power transmission is effectively shortened, the line loss is reduced, and the production energy consumption and cost are reduced.

The invention provides a wall-mounted air conditioner indoor unit. The indoor unit comprises a casing, a heat exchanger, an air injection component, a first air supply assembly and a second air supplyassembly; the casing comprises a shell and a front panel; air inlets are formed in the front panel; a long and round air supply opening is formed under the air inlets; the heat exchanger is arrangedin the position, close to the front panel, inside the casing; the position where the heat exchanger is located communicates with the air inlets; the air injection component is arranged in the air supply opening and is used for injecting heat-exchange air flows in the air injection component forwards and driving ambient air to be sent forwards; the first air supply assembly and the second air supply assembly are transversely arranged behind the heat exchanger at an interval and are separately used for producing heat-exchange air flows which enter from the front air inlets, exchange heat with the heat exchanger and then are supplied from one side of the air injection component. According to the scheme, the air supply volume is increased, the overall indoor temperature is decreased evenly, outside air enters a heat exchanger accommodating cavity where the heat exchanger is located from the upper part of the front side, the area of the air inlets is large, the smoothness of the heat-exchange air flows is guaranteed, and meanwhile, the problem of dust gathering of openings on the upper side is avoided.

The present invention discloses a LED light-projecting imaging device, which comprises a support, a shell and an imaging system, a rotating disc and a light source which are serially arranged. The imaging system and the rotating disc are arranged on the support. The present invention is characterized in that the light source consists of a LED lamp beads group formed by a plurality of LED lamp beads; each LED lamp bead is distributed on a light concentration concave. The luminescent ends of each LED lamp bead face to the inner side of the concave and point to the focus of the concave. A radiating structure is arranged at the bottom of the LED lamp bead, which consists of a column body and radiation-type strip bodies evenly distributed on the periphery face of the column body. A clearance is arranged between the two neighboring strip bodies placing at the same cycle cross section. The clearance is also arranged between the two neighboring strip bodies along the axis direction of the column body. The axes line of the radiating structure is overlapped with the axes line of a LED illuminant body. Compared with the prior art, the present invention has the advantages of energy-saving, good radiating effect, long service life and dustproof and so on; the present invention can be widely used in the producing of projection lamps and head-shaking lights and so on.

The invention relates to the field of utility pole production equipment, and specifically discloses a utility pole production line, including: a cage line, a watering line with a vertical cross transfer path, a centrifugal line, a cleaning line buried in the foundation, and a line between each production line The track for material transfer, the turntable between the track intersections. In the present invention, the transfer route of the watering line is designed to be vertically intersecting, and a turntable is set at the crossing position between each transfer track to turn, which not only shortens the transfer distance of the material and saves the production area, but also improves the production efficiency. Transshipment production efficiency; and by adding a cleaning line buried inside the foundation to clean and recycle the used molds in time, it not only reduces manpower and time costs, but also saves the space for mold transfer; the concrete mixing line and the centrifugal line respectively The addition of dust collectors and guard plates can prevent the spread of dust and the bonding of concrete, avoid environmental pollution in the workshop, and eliminate health risks.

The application discloses an antenna component and a mobile terminal. The antenna assembly includes a metal frame, a matching circuit, antenna wiring and a tuning module; a feed point is provided on the metal frame, and the matching circuit is connected to the feed point on the metal frame; the antenna wiring One end of the antenna wire is connected to the feed point, and the other end of the antenna wire is connected to the tuning module; the antenna wire is set between the tuning module and the matching circuit, and the antenna wire and the metal frame are shunted, which is equivalent to shortening The distance between the current flowing between the tuning module and the feed point is increased, thereby improving the tuning range and bandwidth. At the same time, the connection between the antenna wiring and the tuning module is equivalent to adding a parallel circuit with adjustable impedance at the feed point. Play the role of impedance tuning, thereby reducing the return loss of the antenna, while ensuring the transmission efficiency of the circuit, it can also improve the resonant frequency range of the antenna.

A multi-channel water-cooling heat dissipation system of a direct current brushless motor comprises a motor body, the motor body comprises a machine shell and a stator assembly installed in the machine shell, a circular liquid path ring is installed between the machine shell and the stator assembly, and a water inlet and a water outlet of the circular liquid path ring are both communicated with an external water tank; and a plurality of annularly arranged water channels are uniformly distributed on the outer surface of the circular liquid path ring, and each water channel is provided with an independent water inlet and an independent water outlet. Multi-channel heat dissipation is arranged, the heat dissipation efficiency is improved, and the temperature of the motor is effectively reduced.

Provided is a high concentration solar cell chip, comprising: a solar cell epitaxial laminate layer (001); a grid-shaped metal nano-electrode (002) overlaid on the surface of the solar cell epitaxial laminate layer (001); a gate electrode (003) formed on the grid-shaped metal nano-electrode (002); and a transparent conductive layer (004) formed on the grid-shaped metal nano-electrode (002) and forming an ohmic contact with the solar cell epitaxial laminate layer(001). The solar cell chip employs a transparent conductive layer to form a large area ohmic contact with the surface of a cell epitaxial sheet, thus greatly reducing the contact resistance between an electrode and the cell epitaxial sheet; embedding a grid-shaped metal nano-electrode in the transparent conductive layer dramatically improves the conductivity of the transparent conductive layer, and solves the problem of deficient conductivity of the transparent conductive layer; improvement of the electrical conductivity of the transparent conductive layer enables the gate electrode to be wider, thus improving sunlight utilization.

The invention provides an outdoor modular refrigerating module used for conducting refrigeration on a cabinet module. The cabinet module comprises a shell, wherein the side face of the shell is provided with an opening, and the shell is internally provided with a cold channel and a hot channel which are isolated through a cabinet. The refrigerating module comprises a case and a refrigerating module body arranged in the case, wherein the case is provided with an air inlet, an exhaust outlet and an air outlet which is connected with the opening in the shell in a butted manner, and the refrigerating module body comprises an air inlet cavity which communicates the air inlet with the cold channel, an air return cavity which communicates with the hot channel, a direct air inlet unit which is arranged at an inlet of the air inlet cavity, an air wall unit which is arranged at an outlet of the air inlet cavity and an air exhaust unit arranged at the exhaust outlet. The refrigerating module is manufactured, assembled and adjusted in a factory in advance and then conveyed to the scene, and then butt-joint installation of the refrigerating module and the cabinet module is completed, so that the building efficiency of a refrigerating system is greatly improved, the on-site construction workload is reduced, and thorough decoupling with a machine room is achieved.

The invention discloses an air suction silencer for a reciprocating piston type compressor. The air suction silencer comprises a silencing cavity, wherein an air inlet and an air outlet are formed in the silencing cavity, an inner inserting pipe with the two ends communicated with the air inlet and the air outlet correspondingly is arranged in the silencing cavity, and the silencing cavity comprises an expansion cavity and a resonant cavity which are separated; the two ends of the inner inserting pipe are arranged in the expansion cavity and the resonant cavity respectively, the first end located in the expansion cavity directly faces the air inlet or the air outlet, a distance is formed between the air inlet or the air outlet and the first end, and the resonant cavity comprises a first resonant cavity and a second resonant cavity which are separated; and a first silencing hole and a second silencing hole which are respectively communicated with the first resonant cavity and the second resonant cavity are formed in the pipe wall, positioned in the resonant cavity, of the inner inserting pipe, and the time required for airflow to flow to the first silencing hole and the second silencing hole along the inner inserting pipe is the same. According to the air suction silencer, the noise reduction capacity of the air suction silencer is improved while high air conveying efficiency is guaranteed.

The invention relates to a high-treatment-capacity low-temperature vacuum evaporator which comprises an evaporation tank which is provided with a steam outlet and a concentrated solution outlet; a condensation tank which is connected with the steam outlet; heat exchangers which are respectively arranged in the evaporation tank and the condensation tank; a heat source device which comprises a compressor unit and an air inlet port, wherein the compressor unit comprises a plurality of compressors which are arranged in parallel, each compressor is connected with the air inlet port and the heat exchanger, the air inlet port is used for distributing gaseous refrigerants into each compressor, and forming a heat exchange medium provided for the heat exchanger so as to heat the waste liquid in the evaporation tank, and evaporating the waste liquid to form water vapor; a refrigerating device which is connected with the heat source device and the heat exchanger; and a pressure reducing device which is used for vacuumizing the evaporation tank. The high-treatment-capacity low-temperature vacuum evaporator has the advantages that the treatment capacity can be greatly increased, and the high heat exchange efficiency and the high effluent quality can be realized at lower cost.

The invention provides a wall-mounted air conditioner indoor unit. The wall-mounted air conditioner indoor unit comprises a shell, a heat exchanger, an air injection part and an air supply assembly; the shell is provided with a cover shell and a front panel which is arranged in front of the cover shell, air inlets are formed in the front panel, and a long circular air supply opening is formed at the lower part of the air inlets; the heat exchanger comprises a first heat exchange section and a second heat exchange section, wherein the first heat exchange section is arranged at the position close to the front panel, and the second heat exchange section is arranged at the position tightly close to the top wall of the cover shell; the air injection part is arranged in the air supply opening, an air suction hole is defined by an annular inner wall of the air injection part, air supply cavities are cooperatively defined by an annular outer wall and the annular inner wall of the air injectionpart, and the edges of the portions where the annular outer wall and the annular inner wall are connected form air injection openings and are used for spraying out the airflow in the air supply cavities forwards, so that air at the rear part of the air supply opening is sucked to pass through the air suction hole; and the air supply assembly enables ambient air to be fed from the air inlets to exchange heat with the heat exchanger, and the airflow subjected to heat exchange is discharged to the air supply cavities through the air supply assembly. According to the scheme, the wall-mounted airconditioner indoor unit is compact in structure, the supplied air is soft, and the comfort level is high.

The invention discloses a split-cooled aeroengine compressor rear shaft diameter cone wall cavity, which is different from the traditional aeroengine air system components in which a single type of air-introduction hole is provided for air-intake cooling, but the stator cone surface and the stator drum respectively The pre-rotating nozzles with two apertures on the surface can not only realize the reasonable distribution of the cooling air flow and the reasonable configuration of the cooling parts under the condition of the total flow of the bleed air, so as to achieve precise cooling, but also shorten the flow of the cooling air in the flow channel. The flow distance can significantly reduce the wind resistance of the rotor to the cooling airflow, reduce the entropy of the airflow, improve the quality of the cold air, and can also ensure the cooling quality of the airflow out of the cone wall cavity while ensuring that the cone wall is in a comprehensive and good cooling state. The improvement of the cone wall cavity makes the downstream components get better cooling effect. The invention conforms to the low-entropy production design concept of the flow path of the air system, and can be widely used in the cooling scheme design of the air system of the advanced aeroengine.

The invention relates to the technical field of heating production systems, and discloses a spraying thermal heating production system which comprises a production system, a composite furnace body, a heat energy recovery system, a composite conveying system and a heating system. The production system is divided into a working area A and a working area B; each of the working area A and the working area B comprises a roller way conveying line, a belt conveying line, a hanging conveying line, a heat energy recovery system, a sintering furnace, a drying furnace, a blank conveying line, a glaze spraying area and a receiving area; and the working area A and the working area B form a composite thermal heating production system. The spraying thermal heating production system has the advantages of being high in production efficiency, capable of avoiding heat energy waste, small in occupied area and convenient to maintain.

The invention provides a wall-mounted type indoor unit of an air conditioner. The wall-mounted type indoor unit comprises a housing, a heat exchanger, a first gas spraying part and a second gas spraying part, and a first air feeding assembly and a second air feeding assembly, wherein the housing comprises a casing and a front panel arranged in front of the casing; a first air feeding hole and a second air feeding hole, which are in the shape of a long circle, are formed in the front panel in a spaced mode; an air inlet is formed between the first air feeding hole and the second air feeding hole; the first gas spraying part is distributed in the first air feeding hole, and the second gas spraying part is distributed in the second air feeding hole; a first gas spraying hole and a second gasspraying hole for spraying heat-exchanged gas flow are separately formed in the inner peripheral wall of the first gas spraying part and the inner peripheral wall of the second gas spraying part; heat-exchanged gas flow drives ambient air in a central air exhaust hole of the first gas spraying part and a central air exhaust hole of the second gas spraying part to feed out; and the first air feeding assembly and the second air feeding assembly are arranged inside the housing in the spaced mode, and are separately used for providing heat-exchanged gas flow to the first gas spraying part and thesecond gas spraying part. With the adoption of the scheme, ash is prevented from dropping into an opening, so that air feeding amount is increased, and therefore, an indoor temperature is integrally reduced uniformly.

The invention relates to a ventilated defrosting device arranged on a refrigerator door body and a refrigerator. The refrigerator door body comprises a shell and an inner container. The ventilated defrosting device comprises a molecular sieve box located between the shell and the inner container and enabling the interior and the exterior of the refrigerator to be communicated. According to the ventilated defrosting device arranged on the refrigerator door body and the refrigerator, the molecular sieve box is adopted to connect the inner side and the outer side of a refrigerator body, and the ventilated defrosting device is simple in mounting structure, easy to operate and free of other hoses in connection; the overall structure is suitable for production of different foaming clamps used in the rotating die combination and up-down die combination processes of the refrigerator door body, and the problems that it is difficult to open a door due to negative pressure in the refrigerator, and energy consumption is high due to frosting are solved effectively.

The invention discloses a planetary deceleration device, a drive axle assembly and a vehicle. The planetary deceleration device comprises a casing, a ring gear, a planetary wheel assembly, a planetary carrier, a planetary wheel shaft and an oil guide. An oil pool containing lubricating oil is formed in the casing, the ring gear is fixedly connected to the casing, the planetary gear assembly is engaged with the ring gear, the planetary gear shaft is arranged on the planet carrier, the planetary gear assembly is sheathed on the planetary gear shaft, the planetary gear assembly and the Bearings are arranged between the planetary wheel shafts, an oil guide flow path is arranged in the planetary wheel shaft, an oil inlet and an oil outlet communicated with the oil guide flow path are arranged on the planetary wheel shaft, and the oil guide piece is connected with the planet carrier to be driven by the planet carrier When rotating, a part of the oil guide is located in the oil pool, and the oil guide is configured to guide the lubricating oil in the oil pool to the oil inlet during rotation, and the lubricating oil in the oil guiding flow path enters the bearing through the oil outlet. According to the planetary deceleration device of the present invention, by arranging the oil guide member on the planet carrier, the lubricating efficiency and lubricating effect of the planetary deceleration device are greatly improved.

The invention discloses a 5G radio frequency front-end assembly equipment, comprising a module assembly unit and a circuit forming unit arranged in sequence along the assembly sequence; the module assembly unit includes a substrate forming device and a chip mounting device; the circuit forming unit includes a chip plastic packaging device and a circuit etching device; the chip plastic sealing device comprises a sealing box, a first sealing isolation layer and a sealing cavity, and the sealing cavity is provided with a workpiece rotating device, a plastic sealing molding device and a high voltage generating device; a 5G radio frequency is also disclosed The assembly method of the front-end assembly equipment; the present invention realizes the compounding of the multi-layer substrate and the assembly of the chip with high precision and high efficiency by setting the module assembly unit under the streamlined assembly mode, and is formed by curing organic matter through the chip plastic sealing device. The plastic encapsulation layer that meets the standard is flattened, and the circuit etching device makes the circuit network through the selective etching process, and strictly controls the quality requirements to ensure that the substrate and the chip have good assembly accuracy.