11results about How to "Reduce impact loss" patented technology

The utility model provides a variable diameter high pressure double air inlet forward multi -wing centrifugal wind wheel belongs to ventilation equipment technical field. It solved the problem of insufficient static pressure effect of multi -wing centrifugal wind wheel in the prior art. The utility model discloses upper blade, lower blade and hub, and upper blade and lower blade are forward arc multi -wing distribution and upper blade and lower blade are variable diameter structure, and upper blade and lower blade are set up in opposite direction and the large diameter end of upper blade and lower blade is fixedly connected with hub, and upper blade and lower blade are circular array distribution in hub close to the place of outer periphery, and the small diameter end of upper blade and lower blade is towards the outside, and the small diameter end of upper blade and lower blade is fixedly connected with first annular end plate and second annular end plate respectively, and the hub center place is provided with the installation through -hole, and the hub on the outer periphery of installation through -hole is provided with fixed hole. The utility model has the advantages of good static pressure effect, and the wind wheel import impact is smaller.

The utility model provides a high-pressure wear-resistant centrifugal steam turbine impeller, which relates to the technical field of steam turbine impellers, and comprises a connecting shaft, fan blades, a limiting piece, a mounting plate, a connecting shaft, a connecting shaft, a connecting shaft, a connecting shaft, a connecting shaft, a connecting shaft, a connecting shaft and a connecting shaft, and is characterized in that the limiting piece is arranged outside the fan blades and is used for connecting and limiting the fan blades; the fixing ring is fixedly arranged on the outer sides of the ends of the multiple fan blades, the mounting piece is arranged in the mounting plate, the limiting block is fixedly arranged on the inner side of the mounting plate, and the ends of the fan blades are fixed through the fixing ring and a multi-stage limiting structure of the connecting ring and the limiting plate. Compared with the prior art, the vibration trend of the fan blades under the action of wind power in operation can be effectively limited, it is ensured that the positions of the fan blades are relatively static, the vibration amplitude is greatly reduced, the phenomena of friction, collision frequency and stress concentration between the fan blades and peripheral components are remarkably reduced through vibration reduction, and material fatigue, abrasion and structure looseness caused by high-frequency vibration are avoided.

The invention discloses a volute assembly, an air blower and a manufacturing method of the air blower, and belongs to the technical field of non-variable-capacity pumps. The volute assembly comprises a volute body, an end cover body and a flow guide body; the volute main body is provided with an air outlet; the end cover body comprises a connecting cover and a drainage shell, the connecting cover is connected with the front end of the volute body, the connecting cover and the volute body jointly form a diffusion flow channel, the diffusion flow channel is communicated with the air outlet, the drainage shell extends in the front-back direction, the rear end of the drainage shell is connected with the connecting cover, and an air inlet is formed in the front end of the drainage shell; the flow guide body is connected into the drainage shell, the outer wall face of the flow guide body and the inner wall face of the drainage shell jointly form an acceleration flow channel, the front end of the acceleration flow channel communicates with the air inlet, and the rear end of the acceleration flow channel communicates with the diffusion flow channel. The fluid guiding structure of the air blower is optimized, and the energy efficiency of the whole machine is improved.

The utility model relates to an air conditioner indoor unit and an air conditioning unit, the air conditioner indoor unit comprises a shell (1), the shell (1) comprises a top plate (11) and a bottom plate (12), the top plate (11) is provided with a first air outlet (10) and is used for air outlet in a refrigeration mode, and the bottom plate (12) is provided with a second air outlet (20) and is used for air outlet in a heating mode; the cross-flow fan (2) is arranged in the shell (1) and comprises an air duct assembly (21) and cross-flow fan blades (22) arranged in the air duct assembly (21), an air duct inlet (213) and an air duct outlet (214) are formed in the circumferential side wall of the air duct assembly (21), and the air duct assembly (21) can rotate around a first central axis (O1) of the air duct assembly (21) so that the air conditioner indoor unit can be switched between an upper air outlet state of a refrigeration mode and a lower air outlet state of a heating mode; and the heat exchanger (3) is in a straight plate shape and is positioned between the cross-flow fan (2) and the first air outlet (10) or the second air outlet (20).

The utility model belongs to the technical field of chemical equipment, and discloses an anti-blocking chemical reaction kettle which comprises a kettle body, and a kettle body discharge pipe is fixedly communicated with a discharge port of the kettle body; a feeding funnel is mounted at the bottom in the kettle body, the circumferential outer edge end of the feeding funnel abuts against the circumferential wall face of the inner side of the kettle body, and a funnel discharging pipe of the feeding funnel is coaxially and slidably connected into a kettle body discharging pipe; a vibration auxiliary feeding assembly is installed at the bottom of the kettle body and comprises a first driving motor, a driving shaft and a striking block, the driving shaft is arranged in the radial direction of the kettle body discharging pipe, the first end of the driving shaft is in transmission connection with the first driving motor, one end of the striking block is in transmission connection with the second end of the driving shaft, and the other end of the striking block can abut against the outer wall face of the hopper body; a plurality of elastic telescopic supporting legs are vertically mounted on the bottom end surface in the kettle body at intervals, and the top ends of the elastic telescopic supporting legs are propped against and supported on the lower side wall surface of the hopper body. According to the reaction kettle, adhered and accumulated materials can be discharged when being vibrated, so that the problem of material blockage is effectively solved, and the material cleaning efficiency is improved.

This invention discloses a multi-robot path planning method and system based on hierarchical control. The method acquires model information and basic parameters of each robot in the system, and constructs a realistic map of the working environment using the SLAM algorithm. The grids of the constructed realistic map are merged, transforming a fine-grained grid map into a coarse-grained one. Considering the overall movement direction and target position of the robots, a global path input for the navigation system is obtained. This global path input is published to each robot, and robots can subscribe to other robots' paths to capture their global path information. Each robot perceives local environmental information in a local map and obtains information about obstacles around other robots. Based on the global path results from the MAPF algorithm, a local path planning method is used to generate local paths, enabling avoidance between robots. This provides a reliable solution for efficient collaboration in multi-robot systems.

The invention relates to the technical field of axial flow pumps, and discloses a multi-working-condition adaptive fluorine material axial flow pump which comprises a guide vane body and a horn tube which are fixed to each other, an upper fluorine material sleeve body is arranged on the inner wall of the guide vane body, a lower fluorine material sleeve body is arranged on the inner wall of the horn tube, and a fluorine material clamping sleeve is arranged at the butt joint position of the guide vane body and the horn tube in a clamped mode. The upper fluorine material sleeve body and the lower fluorine material sleeve body are in sealed butt joint with the fluorine material jacket; a movable sealing kit is arranged on the portion, located between the shaft sleeve and the impeller, of the main shaft and used for limiting the impeller and sealing the gap between the main shaft and the shaft sleeve and the impeller. By adopting the split fluorine material shell structure of the upper fluorine material sleeve body, the lower fluorine material sleeve body and the fluorine material jacket, the split fluorine material shell structure can adapt to various corrosive media such as strong acid, strong alkali and organic solvents, and the multi-working-condition requirements of industries such as chemical engineering, metallurgy and environmental protection are met; the movable sealing sleeve forms mechanical locking and fixing, the connecting strength is high, and gaps caused by high-speed medium scouring are effectively prevented.

The utility model relates to an air conditioner indoor unit and an air conditioning unit, the air conditioner indoor unit comprises a shell (1), the shell (1) is provided with a first air outlet (10) and a second air outlet (20), the shell (1) comprises a top plate (11) and a bottom plate (12), the first air outlet (10) is formed in the top plate (11) and used for air outlet in a refrigeration mode, and the second air outlet (20) is formed in the bottom plate (12) and used for air outlet in a heating mode; the fan (2 ') comprises a volute assembly (2), the volute assembly (2) comprises a fixed volute (21) and a movable volute (22), the movable volute (22) is rotatably arranged in the fixed volute (21) around the central axis of the fan (2'), so that the air conditioner indoor unit is switched between an upper air outlet state of a refrigeration mode and a lower air outlet state of a heating mode, and the central axis extends in the first direction (x).

The utility model relates to an air conditioner indoor unit and an air conditioner unit. The cross-flow fan is arranged in the shell, the cross-flow fan comprises a volute assembly, the volute assembly is provided with an air outlet, and the volute assembly is rotatably switched between a first position and a second position around the central axis of the volute assembly, so that the air conditioner indoor unit is switched between an upper air outlet state of a refrigeration mode and a lower air outlet state of a heating mode; the first limiting air guiding assembly and the second limiting air guiding assembly are both movably connected to the inner wall of the shell, the first limiting air guiding assembly is configured to limit the volute assembly to the first position and is configured to form a first air guiding channel communicating with the air outlet and the first opening, and the second limiting air guiding assembly is configured to form a second air guiding channel communicating with the second opening. The second limiting air guide assembly is configured to limit the volute assembly to the second position and is configured to form a second air guide duct communicating with the air outlet and the second opening. According to the air conditioner indoor unit, the refrigerating and heating effects can be optimized.

The air conditioner indoor unit comprises a shell (1), the shell (1) comprises two side plates (13), the two side plates (13) are connected between a top plate (11) and a bottom plate (12) and are oppositely arranged in a spaced mode in the first direction (x), the top plate (11) is provided with a first opening (10) used for air outlet in a refrigeration mode, the bottom plate (12) is provided with a second opening (20) used for air outlet in a heating mode, and the first opening (10) is communicated with the second opening (20); at least one side plate (13) is provided with a third opening (30) for returning air; the fan comprises a volute assembly (2), the volute assembly (2) comprises a fixed volute (21) and a movable volute (22), the movable volute (22) is rotatably arranged in the fixed volute (21) around the central axis of the fan, so that the air conditioner indoor unit is switched between an upper air outlet state of a refrigeration mode and a lower air outlet state of a heating mode, and the central axis extends in the first direction (x). According to the air conditioner indoor unit, the refrigerating and heating effects can be optimized.

The utility model discloses a kind of multi-wing centrifugal fan blade and multi-wing centrifugal fan, it includes: elliptic arc section, the elliptic arc section is located the air inlet end of the blade;Linear section, the linear section is located the air outlet end of the blade;Middle circular arc section, the circular arc section is located the intermediate position of the blade, the circular arc section is connected respectively the linear section and the elliptic arc section.The blade profile is divided into the three-section composite structure of elliptic arc section, middle circular arc section and linear section, different area characteristics of air flow in blade channel are optimized respectively.Elliptic arc section optimizes inlet region air flow angle deviation, reduces inlet impact loss;Middle circular arc section realizes air flow steady turning, reduces flow separation caused by inverse pressure gradient in blade channel;Linear section suppresses outlet cross section vortex area, reduces outlet flow loss.Three-section synergistic effect significantly reduces aerodynamic loss, improves fan system efficiency, solves the defect that single circular arc blade cannot consider inlet impact and passage separation.