35results about How to "Maintain wind speed" patented technology

The invention discloses a hand drier, which comprises a shell, an air guide duct and a dynamical structure, wherein the shell is provided with an air inlet; the air guide duct is arranged on the shell and comprises two induced pipes and an annular discharge pipe; the two end parts of the discharge pipe extend towards each other; the lower ends of the two induced pipes are respectively communicated with the inner part of the shell; the upper ends of the two induced pipes are respectively connected with the two end parts of the discharge pipe; a plurality of air outlets are formed in the inner peripheral wall of the discharge pipe and comprise left side air outlets and right side air outlets; the dynamical structure is formed in the shell, operates to guide air into the shell from the air inlet and guides the air in the shell to each induced pipe. According to the hand drier provided by the invention, the hand drying area is roomier, the phenomenon that hands of a user touch the discharge pipe when being dried can be avoided, the air speed of the air outlet is improved favorably, and the hand drying time of the user is reduced.

The invention discloses an intelligent air blowing type air shower which comprises an air shower inner wall, an air shower shell, a filtering system and a controller. The air shower inner wall is provided with an air inlet assembly and an air outlet. The air shower shell is used for protecting the air shower inner wall. The filtering system is located between the air shower shell and the air shower inner wall and used for purifying air in the air shower. The filtering system comprises a draught fan, a primary filter and a high-efficiency filter. One end of the controller is connected with theair inlet assembly. The air shower further comprises a dust particle detector located between the air outlet and the draught fan and used for detecting the dust particle concentration at the air outlet. The dust particle detector is connected with the controller. The controller controls the wind speed and air blowing time of the air inlet assembly according to the dust particle concentration detected by the dust particle detector. The wind speed and time can be intelligently adjusted according to the dust particle number at the air outlet, the clean standard is better ensured, and unnecessaryair showering is reduced.

This case discloses an air shower that can store filtered gas, including: the inner wall of the air shower, on which an air inlet component and a linear sensor are arranged; the housing of the air shower located outside the inner wall of the air shower and a filter system for purifying air between the air shower housing and the inner wall of the air shower; wherein, the air shower also includes a gas chamber that can store filtered gas; the gas chamber includes an inlet, Cavity, air bag and output pipeline; the inlet is connected to the gas collection hood; the gas collection hood is located at the end of the filter system; the bottom of the cavity is provided with an air bag, and the air bag is filled with argon; the filtered gas enters the gas The air bag behind the cavity is compressed; the output pipeline is connected to the air inlet component; the linear sensor is connected to the air inlet component for signal, and is used to drive the air inlet component to enter the wind. This case solves the technical problem that the multi-stage filter reduces the flow velocity when the nozzle is sprayed, and the service life of the filter will be reduced by increasing the wind force.

An embodiment of the invention provides a series-parallel variable cross-section type generator sub-slot ventilation cooling structure. The structure includes: a sub-slot, rotor core, rotor winding, rotor wedge lower gasket bar, rotor slot wedge and series-parallel ventilation ditch. The auxiliary slot of rotor core yoke part of generator linear segment adopts variable cross-section form. The cross-sectional area of auxiliary slot near fan side is the largest, and the cross-sectional area decreases with the axial extension of rotor away from fan. The rotor winding, the rotor wedge lower gasketbar and the rotor slot wedge are provided with ventilation channels in the form of vertical series-parallel connection. The cooling air flows into the rotor winding from the auxiliary slot and flowsout from the vent on the rotor slot wedge to form a ventilation and cooling loop. The generator ventilation cooling structure of the invention can be used for solving the problem that the cooling effect of the rotor sub-slot ventilation structure is obviously weakened when the cooling air enters into the rotor core; The wind speed of the cooling air is ensured, and the temperature of the rotor winding is effectively reduced.

The invention relates to the technical field of coal mine ventilation, and provides a novel device for fully utilizing remaining kinetic energy of ventilation air methane and a using method of the novel device. The device comprises a conveying pipeline, a wind driven generator and multiple one-way pressure sensing valves. Ventilation air methane is adjusted through the conveying pipeline to drive the wind driven generator to generate electricity. The conveying pipeline is composed of a front steady flow acceleration pipeline and a rear energy storage pipeline. A first flow stabilizing pipe, a first diffuser, a second flow stabilizing pipe and a flow collector are sequentially arranged in the front steady flow acceleration pipeline. A second diffuser, a third diffuser and a fourth diffuser are sequentially arranged in the rear energy storage pipeline, a pressure sensor, an intelligent instrument and a one-way pressure sensing valve are arranged in each of the second diffuser, the third diffuser and the fourth diffuser, and the multiple one-way pressure sensing valves are opened step by step to complete energy storage. The novel device for fully utilizing the remaining kinetic energy of the ventilation air methane and the using method of the novel device have the beneficial effects that the device can continuously convert ventilation air methane energy into electric energy to be used by other mine mechanical equipment, and the current situation of electric energy shortage at present can be relieved.

The invention discloses a wall-mounted spherical indoor unit and a control method thereof, wherein the wall-mounted spherical indoor unit comprises: a housing having a main air inlet, a main air outlet, and a main air inlet connected to the main air outlet. The air duct, the main air outlet is arranged in a rectangular shape; the air guide is arranged at the main air outlet or in the main air duct, and the air guide has an auxiliary air inlet, an auxiliary air outlet and a connection between the The secondary air duct of the auxiliary air inlet and the auxiliary air outlet, the auxiliary air inlet communicates with the main air duct; the airflow driving device is used to drive airflow from the auxiliary air inlet into the auxiliary air duct. In the technical solution of the present invention, through the setting of the auxiliary air duct system, the change of the direction of the airflow is completed under the action of air pressure, avoiding the extrusion and friction between the airflow and the entity, thereby greatly reducing the energy consumption of the airflow during the direction change process , which is conducive to increasing the air volume and maintaining the wind speed, which is beneficial to the user to send the airflow to a designated location far away.

The invention discloses an air duct type air conditioner and a control method thereof, wherein the air duct type air conditioner comprises: a casing having a main air inlet, a main air outlet, and a main air outlet connecting the main air inlet and the main air outlet. Air duct; deflector, arranged at the main air outlet or in the main air duct, the deflector has a secondary air inlet, a secondary air outlet, and a secondary air inlet connected to the secondary air outlet. An air duct, the auxiliary air inlet is in communication with the main air duct; an airflow driving device is used to drive airflow from the auxiliary air inlet into the auxiliary air duct. In the technical solution of the present invention, through the setting of the auxiliary air duct system, the change of the direction of the airflow is completed under the action of air pressure, avoiding the extrusion and friction between the airflow and the entity, thereby greatly reducing the energy consumption of the airflow during the direction change process , which is conducive to increasing the air volume and maintaining the wind speed, which is beneficial to the user to send the airflow to a designated location far away.

The invention provides a coal mine negative pressure ventilation device consists of a duct. The device comprises the duct. A sluice wall is arranged on the inner end of a single head blind lane. The outer end of the single head blind lane is connected with an air inlet lane. A vice lane is located above the single head blind lane and is connected with the single head blind lane. The vice lane and the single head blind lane are separated by a number of dampers. The lower end of the duct is provided with an air inlet, and the upper end is provided with a return air inlet. The air inlet is fixed in front of the sluice wall. The return air inlet is fixed in the vice lane. The fixed position of the air inlet is lower than the fixed position of the return air inlet. The distance between the air inlet and the sluice wall is 0.3 to 0.6m. The distance between the return air inlet and the damper on the innermost side of the vice lane is 0.3 to 0.5m. The duct diameter of the duct is 4 inches. According to the coal mine negative pressure ventilation device provided by the invention, the duct of 108 to 189mm is arranged between a position 0.3 to 0.6m from the front retention wall or the front sluice door and the nearest damper on the innermost side of the vice lane; air leakage in the middle is prevented; a negative pressure principle is fully used for natural ventilation; the problem of poor ventilation of the single head blind lane is solved; and the return air inlet in the vice lane can pump air in the air inlet lane.

The invention provides a fan shroud and a blower device, which can ensure the wind speed of a part far away from a main shaft in the radial direction when a fan rotates, improve the trafficability of traveling wind when a vehicle travels, and prevent the air volume performance from being reduced. The fan shroud (4) includes: a shroud wall surface (11) extending around the fan in a radial direction orthogonal to the rotation axis; and a plurality of ventilation openings (21) which are formed through the shroud wall surface (11) in the thickness direction of the shroud wall surface (11) and through which the air generated by the fan motor passes. The width (Wa) of the wall surface side opening (21a) on the downstream side of the air flow of the ventilation opening (21) is smaller than the width (Wb) of the transverse wall side opening (21b) on the upstream side of the air flow of the ventilation opening (21).

An embodiment of the invention provides a series-parallel variable cross-section type generator sub-slot ventilation cooling structure. The structure includes: a sub-slot, rotor core, rotor winding, rotor wedge lower gasket bar, rotor slot wedge and series-parallel ventilation ditch. The auxiliary slot of rotor core yoke part of generator linear segment adopts variable cross-section form. The cross-sectional area of auxiliary slot near fan side is the largest, and the cross-sectional area decreases with the axial extension of rotor away from fan. The rotor winding, the rotor wedge lower gasketbar and the rotor slot wedge are provided with ventilation channels in the form of vertical series-parallel connection. The cooling air flows into the rotor winding from the auxiliary slot and flowsout from the vent on the rotor slot wedge to form a ventilation and cooling loop. The generator ventilation cooling structure of the invention can be used for solving the problem that the cooling effect of the rotor sub-slot ventilation structure is obviously weakened when the cooling air enters into the rotor core; The wind speed of the cooling air is ensured, and the temperature of the rotor winding is effectively reduced.

The invention discloses a ceiling machine and a control method thereof, wherein the ceiling machine includes: a housing having a main air inlet, a plurality of main air outlets, and a main air duct connecting the main air inlets and the main air outlets; Multiple air suction parts and air guide parts, the air guide part is detachably connected to the housing, the air suction part extends from the air guide part to the main air outlet, and the air guide has auxiliary air inlets, auxiliary air outlets and connected auxiliary air inlets The auxiliary air duct connected with the auxiliary air outlet, the auxiliary air inlet is connected with the main air duct; the airflow driving device is used to drive the air flow from the auxiliary air inlet into the auxiliary air duct. In the technical solution of the present invention, through the setting of the secondary air duct system, the direction of the airflow is changed under the action of air pressure, avoiding the extrusion and friction between the airflow and the entity, thereby greatly reducing the energy consumption of the airflow during the direction change process, Therefore, it is beneficial to increase the air volume and maintain the wind speed, and it is beneficial for the user to send the airflow to a designated location far away.

The invention discloses a cross-flow air conditioner and a control method thereof, wherein the cross-flow air conditioner comprises: a casing having a main air inlet, a main air outlet, and a main air duct connecting the main air inlet and the main air outlet The air outlet frame is set corresponding to the main air outlet and along the height direction of the housing; the air duct cover plate is arranged in the housing and surrounds the air outlet frame to form an auxiliary air duct. The duct has an auxiliary air inlet and an auxiliary air outlet; the auxiliary air inlet communicates with the main air outlet; and an airflow driving device is used to drive airflow from the auxiliary air inlet into the auxiliary air duct. In the technical solution of the present invention, through the arrangement of the auxiliary air duct system, the extrusion and friction between the air flow and the entity are avoided, thereby greatly reducing the energy consumption of the air flow during the direction change process, which is conducive to increasing the air volume and maintaining the wind speed.

The invention discloses a whole automobile / plate environment test cabin for an automobile and a humidity control method for the test cabin. The whole automobile / plate environment test cabin comprises an experiment cabin body, one or more groups of fresh air devices connected with the experiment cabin body and a filtering device connected with the fresh air device, wherein the experiment cabin body comprises a test cabin body and a heat preservation box body arranged outside the test cabin body; a static pressure cabin including a plurality of air supply ducts which are arranged side by side is arranged at the top of the test cabin body; an air supply hole plate with air supply holes is arranged at the lower part of each air supply duct; an air supply fan for supplying air to the test cabin body is arranged in each air supply duct; each group of the fresh air device comprises a fresh air treatment tank and an ultrasonic atomizer; a spraying device is arranged at the upper part in each fresh air treatment tank, and a condenser and a heating pipe are arranged at the lower part in each fresh air treatment tank; the tanks are filled with distilled water; circulating water pumps connected with the spraying devices are arranged outside the fresh air treatment tanks; the humidity is controlled by fresh air humidity control and ultrasonic atomization and humidification modes. The whole automobile / plate environment test cabin can meet the requirements for different fresh air amounts under different experiment conditions and effectively control the humidity.

The invention provides an air and clinker leakage preventing grate cooler module, which can be combined into a grate cooler. The grate cooler can be formed by connecting multiple air and clinker leakage preventing grate cooler modules longitudinally, and accordingly modular production of the grate cooler is realized and the grate cooler is free of air leakage and clinker leakage. The air and clinker leakage preventing grate cooler module comprises an underframe, trays, driving boards and grate plates. Bottom plates of the trays are provided with vent holes. Movable push rods are connected to the upper portions of the driving boards, and the lower portions of the driving boards are connected with a driving device. Each grate plate comprises a support and U-shaped bending plates, openings of two adjacent bending plates are opposite to each other, side plates of each bending plate with the upward opening are connected with inner bottoms of the bending plates which are provided with the downward openings and located on two sides of the bending plate with the upward opening, gaps are reversed among side plates of each bending plate with the downward opening and the inner bottoms of two bending plates with the upward openings, the side plates of each bending plate with the upward opening are provided with air holes, an air outlet is arranged at the bottom of the support, and gaps are reserved among the bottom of the support and the bottoms of the bending plates with downwards openings. Besides, partition plates are arranged between the trays and the supports, and inverted-U-shaped cover plates are arranged on the driving boards.

The invention discloses an orifice-plate-type air duct structure of a volatile organic compound detection system. The structure disclosed by the invention comprises a test bin and a test bin gate connected with the test bin, wherein the test bin is also internally provided with an air duct plate; the upper part of the air duct plate is provided with an air outlet orifice plate, and the lower partof the air duct plate is provided with an air return orifice plate; the air duct plate, the air outlet orifice plate, the air return orifice plate and the inner wall of the test bin form a first air duct; the first air duct is internally provided with at least one test bin circulating fan; the air outlet orifice plate, the inner wall of the test bin and the inner wall of the test bin gate are provided with air outlets and air return ports; and the air outlet orifice plate is provided with a right-angled, inclined or circular-arc-shaped air deflector. In the test bin, airflow blown down along the inner wall of the test bin is formed, thus adsorbed substances on the inner wall of the test bin are blown down so as to be continuously circulated in the test bin, so that the detected detection value of a sample obtained during sampling is more approximate to the actual value of the volatile organic compound in the test bin, the detection error is greatly reduced, and the detection precisionis improved.

The invention discloses a simulated experimental device and an experimental method for the law of spray dust fall under the wind flow field. During the experiment, a stable wind flow field is mainly formed in the simulated experimental device through a suction fan; Under the action, the dust is transported into the simulated experimental device; through the nozzle on the spray rod connected to the water supply pump, a stable water mist is formed in the simulated experimental device; through the laser droplet size analyzer and PM2.5 dust sampler respectively Measure the droplet size and droplet velocity at different measuring points under different conditions, as well as the dust concentration before and after passing through the droplet field, and transmit the data to the computer, so as to obtain the particle velocity, Relationship between particle size and concentration. The invention has the characteristics of high degree of simulation, accurate and reliable experimental results, compact device structure, convenient and convenient experimental operation, flexible adjustment and the like.

The invention discloses a double cross-flow air conditioner and a method thereof, wherein the double cross-flow air conditioner comprises: a casing having a main air inlet, a first main air outlet and a second main air outlet and communicating with the main air inlet The air outlet and the first main air duct of the first main air outlet are connected to the main air inlet and the second main air duct of the second main air outlet; the air guide is arranged on the first main air outlet corresponding to the first main air outlet. A main air duct, and / or a corresponding second main air outlet is arranged in the second main air duct; the air guide has an auxiliary air inlet, an auxiliary air outlet, and an auxiliary air inlet that communicates with the auxiliary air outlet and the auxiliary air outlet. an air duct; the auxiliary air inlet is communicated with the first main air duct or the second main air duct; an air flow driving device is used to drive the air flow from the auxiliary air inlet to enter the auxiliary air duct. In the technical solution of the present invention, through the arrangement of the auxiliary air duct system, it is beneficial to increase the air volume, maintain the air speed, and help the user to send the air flow to a distant designated position.

The invention discloses an air-conditioning cabinet and a control method thereof, wherein the air-conditioning cabinet includes: a housing having a main air inlet, a main air outlet, and a main air duct communicating with the main air inlet and the main air outlet. The main air outlet is arranged in a rectangular shape; the air guide is arranged at the main air outlet or in the main air duct, and the air guide has an auxiliary air inlet, an auxiliary air outlet, and is connected to the auxiliary air inlet and The auxiliary air duct of the auxiliary air outlet, the auxiliary air inlet communicates with the main air duct; the airflow driving device is used to drive airflow from the auxiliary air inlet into the auxiliary air duct. In the technical solution of the present invention, through the setting of the auxiliary air duct system, the change of the direction of the airflow is completed under the action of air pressure, avoiding the extrusion and friction between the airflow and the entity, thereby greatly reducing the energy consumption of the airflow during the direction change process , which is conducive to increasing the air volume and maintaining the wind speed, which is beneficial to the user to send the airflow to a designated location far away.

The embodiment of the present invention provides an air conditioner fan control method and device, which can solve the problem that the bus voltage exceeds the overvoltage protection value caused by the reverse charging of the air conditioner fan, and prevent the air conditioner from alarming and shutting down due to the reverse charge of the air conditioner fan, thereby improving the performance of the air conditioner. stability. The method includes: detecting the busbar voltage of the air conditioner, and determining whether the busbar voltage of the air conditioner is greater than a preset magnetization voltage entry value, and the preset magnetization voltage entry value is smaller than the overvoltage protection value of the air conditioner; if the busbar voltage of the air conditioner is determined is greater than the preset magnetization voltage entry value, set the first direct axis current command value of the permanent magnet synchronous motor to the pre-stored current value, and the pre-stored current value is greater than zero; obtain the target speed of the permanent magnet synchronous motor, and according to The target speed and the first direct axis current command value are used to drive the permanent magnet synchronous motor, so that the permanent magnet synchronous motor works in a motoring state. The invention is suitable for the technical field of air conditioning.