40results about How to "Small wind loss" patented technology

The invention provides a high-efficient flywheel energy storage device, comprising a shell, a motor arranged in the cavity of the shell, a flywheel and a support structure, wherein, the cavity is vacuumized; the motor is arranged under the flywheel; a flywheel shaft of the flywheel and a rotor of the motor are integrated into a whole; the support structure is formed by mixing a pivot thrust bearing and a permanent magnetic bearing. The device of the invention has the advantages of simple structure, convenient maintenance, low cost, good stability, simultaneous and quick charging and discharging and high energy storage efficiency.

The invention provides a refrigerator with a cooling chamber located at the lower part of the inner side of a freezing inner container. The refrigerator comprises a box body, wherein the box body comprises a storage inner container, the storage inner container comprises the freezing inner container located at the lower part, the cooling chamber is defined at the lower part of the inner side of the freezing inner container, and a storage chamber located above the cooling chamber is defined in the storage inner container; and an evaporator is arranged in the cooling chamber, the cooling chamber occupies the space of the lower part in the freezing inner container, the position of a freezing chamber located above the cooling chamber in the freezing inner container can be effectively lifted, the stooping degree of a user generated during the operation of taking and placing objects from and into the freezing chamber is reduced, and the use experience of the user is improved. A centrifugal fan is located in the cooling chamber and is arranged on the rear side of the evaporator in a backwards-inclined mode, so that the height of the centrifugal fan is reduced, the space occupied by the cooling chamber is reduced so as to expand the space located above the cooling chamber in the freezing inner container, and the storage chamber located above the cooling chamber is defined in the storage inner container.

This invention discloses a high pressure gas supported flywheel cell, which takes a high pressure gas bottle as the gas source to input an inert gas into a gas bearing via a regulator and a filter to float the flywheel. When charging, the power supply drives the motor via a power electronic conversion device to drive the flywheel rotate at high speed and convert the electric energy to dynamic energy to be stored. When discharging, the motor becomes a generator to generate electricity driven by the flywheel to return electric energy to the power supply. The vacuum pump extracts the inert gas from the flywheel sealed protection shade and transports it to the gas source.

A flywheel energy storage system of a vertical-type outer-rotor electromagnetic bearing belongs to the technical field of flywheel energy storage. By the flywheel energy storage system, the problem ofinfluence on dynamic property of a rotor to cause poor compactness of the flywheel energy storage system due to axial length of a flywheel rotor of an existing flywheel energy storage system is solved. A permanent-magnet thrust bearing, an upper auxiliary bearing, an upper radial electromagnetic bearing, an outer-rotor permanent-magnet synchronous motor, a lower radial electromagnetic bearing anda lower auxiliary bearing are sequentially arranged on a core shaft from top to bottom, the upper radial electromagnetic bearing, the lower radial electromagnetic bearing and an inner wall of a flywheel rotation body are in a non-contact state, an upper end and a lower end of the flywheel rotation body are in clearance fit with the upper auxiliary bearing and the lower auxiliary bearing, the permanent-magnet thrust bearing is arranged above the flywheel rotation body, a gap is reserved between the permanent-magnet thrust bearing and an upper end surface of the flywheel rotation body, and theouter-rotor permanent-magnet synchronous motor is arranged in the flywheel rotation body and drives the flywheel rotation body to rotate. The rotor system is compact in structure, and the dynamic property of the rotor is improved.

The invention provides an air guide device of an air conditioner. The air guide device comprises flexible slats arranged in parallel, a connecting bar and a drive mechanism. Each flexible blade has a first corner and a second corner; the first corner is fixedly connected with the windward side of an air outlet; the second corner is rotatably connected to the connecting bar; a rotation axis is formed between the second corner and the connecting bar. Each flexible slat has a first area, a second area and a third area; at least part of the third area is thinner than the second area. Flexural deformation of the flexible slats includes flexural deformation around a first axial direction and flexural deformation around a second axial direction. Besides swinging left or right, the flexible slats turn down or up; the flexible slats can also bend in two dimensions; pressure loss is reduced, air volume and air speed are guaranteed, air supply is effective, and comfort of supplied air is greatly improved. The invention further provides the air conditioner comprising the air guide device.

The present invention discloses a large energy storage variable-section rotor flywheel energy storage system supported by the permanent magnet bearing and the electromagnetic bearing, belongs to the technical field of flywheel energy storage, and solves the problems that the axial length of the flywheel rotor existing in the existing flywheel energy storage system affects the dynamic mechanical characteristics of the rotor and leads to the poor compactness of the structure of the flywheel energy storage system. The permanent magnet thrust bearing, the upper auxiliary bearing, the outer rotor permanent magnet synchronous motor and the lower auxiliary bearing are mounted on the mandrel, and the upper end and the lower end of the flywheel rotating body are in a clearance fit state with the upper auxiliary bearing and the lower auxiliary bearing; there is a gap between the permanent magnet thrust bearing and the upper end surface of the flywheel rotating body; the outer rotor permanent magnet synchronous motor is arranged in the flywheel rotating body to drive the flywheel rotating body to rotate; and the radial electromagnetic bearing is fixedly mounted on the shell, the electromagnetic bearing is in non-contact with the outer wall of the flywheel rotating body, and the flywheel main body is a stepped variable cross-section structure with a slope. According to the rotor system provided by the present invention, the structure is compact, and the dynamic characteristics of the rotor are enhanced.

The invention relates to an energy storage battery of a magnetic-suspending flywheel. The energy storage battery of the magnetic-suspending flywheel is characterized in that a repulsive magnetic suspending bearing between a rotor and a stator of the magnetic-suspending flywheel through an axial permanent magnet and a radial permanent magnet. The flywheel is suspended in a sealed vacuum environment. 12 permanent magnets are arranged in the middle of the flywheel in an array shape and form an integrated generator / motor with 12 coils in the middle of the stator. A flywheel dynamic stable system generates an induced electromotive force so as to generate a lorentz force opposite to an offset direction through the coils in the upper and lower circular discs of the rotor of the flywheel because the rotor is deviated from a normal position, so that the flywheel returns the normal position. An electronic power control system is integrated in the stator. As the coils and the control system generate heat, a heat pipe radiating system discharges heat to ensure normal operation of the system. As the flywheel which rotates at a high speed is of extremely high energy, once the rotor and the stator abrade to quickly generate high temperature, risk can be controlled within the minimum range by quickly and emergently releasing high pressure nitrogen.

The invention discloses a range hood, which comprises a casing, a diversion structure, a fan system and a plurality of condensation plates, wherein the casing and the diversion structure define a cavity, and the fan system is arranged in the cavity; a plurality of smoke collecting chambers are formed in one side, away from the fan system, of the diversion structure, and air inlet structures are arranged on the inner wall surfaces of the smoke collecting chambers; the plurality of condensation plates are arranged on the side, away from the fan system, of the diversion structure and correspond to at least two smoke collecting chambers; negative pressure flow passages are formed between the condensation plates and the inner wall surfaces of the corresponding smoke collecting chambers, and arecommunicated with the corresponding air inlet structures; the cross sections of the negative pressure flow passages is tapered from the inside of the inlets, and the condensation plates are movably set to adjust the size of the corresponding negative pressure flow passage inlets. The condensation plates of the range hood are movably arranged to adjust the sizes of the corresponding negative pressure flow passage inlets, so as to maintain a better effect of smoke sucking and exhausting in an application scenario with a wide smoke range and a large amount of smoke.

The present invention discloses a cylindrical rotor flywheel energy storage system supported by the permanent magnet bearing and the electromagnetic bearing, belongs to the technical field of flywheelenergy storage, and solves the problems that the axial length of the flywheel rotor existing in the existing flywheel energy storage system affects the dynamic mechanical characteristics of the rotorand leads to the poor compactness of the structure of the flywheel energy storage system. The permanent magnet thrust bearing, the upper auxiliary bearing, the outer rotor permanent magnet synchronous motor and the lower auxiliary bearing are mounted on the mandrel from top to bottom, and the upper end and the lower end of the flywheel rotating body are in a clearance fit state with the upper auxiliary bearing and the lower auxiliary bearing; there is a gap between the permanent magnet thrust bearing and the upper end surface of the flywheel rotating body; the outer rotor permanent magnet synchronous motor is arranged in the flywheel rotating body to drive the flywheel rotating body to rotate; and the upper radial electromagnetic bearing and the lower radial electromagnetic bearing are fixedly mounted on the shell, and the radial electromagnetic bearings are in a non-contact state with the outer wall of the flywheel rotating body. According to the rotor system provided by the presentinvention, the structure is compact, and the dynamic characteristics of the rotor are enhanced.

The invention discloses a reciprocating blower with two-blade synchronous racks, which comprises a gear box (1), a belt pulley (2), a reduction gear (3), a crankshaft gear (3), a reduction gear shaft (31), a crankshaft (41), a rocking arm rack (5), a spline gear (6), a pinch roller component (61), a frame (7), an air valve (8), a spline shaft (9), blades (10), a casing (11), a cover (12) and an air duct concentrator (13). The invention overcomes the deficiencies in the prior high-pressure blower of difficulty to increase wind pressure, large windage loss, serious abrasion, amazing noise and high cost, and adopts the technical proposal that two blowing blades synchronously rotate back and forth for 150 degrees in a cylindrical casing separated into two air chambers by the air valve; air is sucked into through the air valve and then squeezed out. The provided two-blade synchronous reciprocating blower ensures that the high-pressure blower achieves the purposes of further increased wind pressure (larger than or equal to 100kPa) and wind rate, small windage loss, high efficiency, low noise without the need of adding a silencer, small volume and low cost.

The invention discloses a fan-pendulum-type high-pressure blower. The fan-pendulum-type high-pressure blower comprises a swinging converter (1) and a swinging draught fan (2). According to the technical scheme, a device consists of the swinging converter and the swinging draught fan, the swinging converter converts the circumference rotation of an input shaft into the reciprocating rotation of an output shaft through a gear drive swinging rod and a horseshoe-shaped rack, the swinging draught fan is provided with an air box, a draught fan shaft, a blade, an air channel, an air suction valve and an air exhaust valve, the inner cavity of the cylindrical air box is divided into a left air chamber and a right air chamber by the blade, the draught fan shaft is connected with the output shaft of the swinging converter, the draught fan shaft drives the blade to swing reciprocally in the air box along a fan-shaped trajectory, and the volumes of the left air chamber and the right air chamber are changed reciprocally in an alternating way; external air is sucked into the left air chamber and the right air chamber by the air suction valve through the air channel alternately, and the air compressed by the blade which is swung reciprocally is extruded out alternately from the left air chamber and the right air chamber through the air channel and the air exhaust valve. Therefore, the aims of improving air pressure, reducing air loss and noises, and reducing cost of the high-pressure blower are fulfilled.

The invention relates to the technical field of engineering machinery, and in particular relates to a cab of a skid steer loader and the skid steer loader. The cab of the skid steer loader comprises an air conditioning system and a cab cabin body provided with a cab cabin , wherein the air conditioning system comprises an air conditioning unit (33) and an air conditioning air duct (37) which is connected with a first air port of the air conditioning unit (33) and used for leading air output from the first air port into the cab cabin, the cab body comprises a cab frame, the air conditioning airduct (37) is arranged in the cab frame, and a second air port (36) in communication with the air conditioning air duct (37) and the cab cabin is formed in the cab frame. The cab of the skid steer loader and the air conditioning air duct in the skid steer loader do not occupy the space of the cab cabin, so that the space utilization rate is improved.

A curved variable cross-section rotor flywheel energy storage system supported by a permanent magnet bearing and an electromagnetic bearing belongs to the technical field of flywheel energy storage. The invention solves the axial length of the flywheel rotor existing in the existing flywheel energy storage system, the permanent magnet thrust bearing, the upper auxiliary bearing, the outer rotor permanent magnet synchronous motor and the lower auxiliary bearing are arranged on the mandrel, and the upper end and the lower end of the flywheel rotary body are in a clearance fit state with the upper auxiliary bearing and the lower auxiliary bearing; A gap is left between the permanent magnet thrust bearing and the upper end face of the flywheel rotary body; The outer rotor permanent magnet synchronous motor is arranged in the flywheel rotating body to drive the flywheel rotating body to rotate; The radial magnetic bearing is fixedly installed on the shell, the magnetic bearing and the outerwall of the flywheel are in a non-contact state, and the flywheel main body is of a curved surface variable cross-section structure. The rotor system of the invention has a compact structure and improves the dynamic characteristics of the rotor.

The invention provides a refrigerator with an air supply fan located at the downstream of an evaporator. The refrigerator comprises a refrigerator body, the evaporator and the air supply fan, a cooling chamber located at the lower part and at least one storage chamber located above the cooling chamber are defined in the refrigerator body, the evaporator is arranged in the cooling chamber, and theair supply fan is located on the downstream of the evaporator and in an airflow flow path and is configured to cause at least part of the cooling airflow to flow into the at least one storage chamberthrough an air supply duct. According to the refrigerator, the cooling chamber is located at the lower part in the refrigerator body, the lower space in the refrigerator body is occupied, the coolingchamber can be used for providing an avoiding position for a pressure cabin, and the storage chambers do not need to provide the avoiding position for the pressure cabin, so that the special-shaped problem exists on a freezing chamber due to the fact that the freezing chamber needs to provide the yielding position for the pressure cabin in the prior art is solved, and thus the storage capacity ofthe freezing chamber is ensured; and in addition, the air supply fan is arranged at the downstream of the evaporator, the airflow which is cooled by the evaporator is accelerated to flow to the storage chambers, and the refrigeration effect of the refrigerator is ensured.

The invention proposes a ventilation structure for small and medium vertical turbine generators, and the structure is characterized in that the structure comprises a turbine generator main shaft, a plurality of magnet yoke blocks, a lower fan cover, an upper fan cover, ventilation slotted vanes and a support column. The plurality of magnet yoke blocks are disposed on the turbine generator main shaft in a sleeving manner after processing, and the upper edges of the magnet yoke blocks are uniformly provided with vent holes along the center. The vent holes are through vertically, and the adjacentmagnet yoke blocks are connected through the ventilation slotted vanes and the support column. The upper fan cover is disposed on the vent hole of the magnet yoke block above the turbine generator main shaft, and the lower fan cover is disposed on the vent hole of the magnet yoke block below the turbine generator main shaft. The upper fan cover and the lower fan cover are located outside the magnet yoke blocks. The structure is suitable for the small and medium vertical turbine generators which are small in size and higher in speed. The structure is simple, the processing burden is small, andthe installation is convenient.

The invention discloses an air-cooling heat dissipation method for a digital generator. In the method, a partition plate is adopted to divide an inner cavity of a generator case shell into a low-temperature area on the left side and a high-temperature area on the right side, and the method is characterized in that an engine shell sleeves an engine body in the high-temperature area at the right end at an interval; and a hand-pulling disc fan serving as air current power is located in an opening in the left end of the engine shell, so that air current in the high-temperature area enters the engine shell from an opening in the left end of the engine shell after passing through a carburetor and an engine air cylinder head outside the engine shell, flows through a silencer from the upper right portion of an engine after flowing through and cooling the engine, and then flows out of the generator case shell from an air outlet of the silencer, so that internal components of the generator are cooled. The air flow loss is smaller, the cooling path design is more scientific, the cooling efficiency is higher, and the cooling balance is better; and the overall heat dissipation and cooling effect of the generator can be better improved, the working stability of the whole generator is improved, and the overall service life of the equipment is prolonged.

The invention provides a wall-mounted fresh air conditioner indoor unit and an air conditioner. The wall-mounted fresh air conditioner indoor unit comprises a machine shell, a fresh air device and an air supply part, wherein the fresh air device is arranged at one transverse end in the machine shell, and a first fresh air outlet is formed in the bottom of the fresh air device; the air supply part is connected with the first fresh air outlet and is formed by extending from the first fresh air outlet in the transverse direction of the machine shell, and an exhaust outlet is formed in the front side of the air supply part, so that fresh air can be supplied to the outside of the machine shell through the exhaust outlet; and an air supply duct is formed in the air supply part, and the section of the air supply duct is gradually shrunk from the end close to the first fresh air outlet to the other end. According to the scheme provided by the invention, the air supply part with the front exhaust outlet is arranged to be connected with the first fresh air outlet, and the air supply duct with the section gradually shrunk from the end close to the first fresh air outlet to the other end is formed in the air supply part, so that the fresh air range is enlarged, and the fresh air uniformity is improved.

The invention discloses a butterfly robot type blower, which comprises a blower air chamber which is enclosed by a gearbox (1), a shell (12) and a cover plate (15), the blower air chamber is separated into two portions which are a left air chamber (17) and a right air chamber (18) by an end surface sleeve shaft blade (13) and a spline sleeve shaft blade (14), the two portions are alternately changed along with the movement of the blade, the blower air chamber is driven by a transmission mechanism, two blades back and forth do a synchronous approximate half cycle butterfly robot type rotation whose turning direction is opposite in the air chamber, the volume of the left and the right air chambers are alternately expanded and pressed, an inspiration port and an exhaust port are separated through an air valve (16), thereby achieving the purpose of blowing outwards, and overcoming the defects existing in a high voltage blower of the prior art that wind pressure is difficult to further increase, the air loss rate is large, the wear is severe, the noise is incredible, and a muffler is needed to arrange.

The invention discloses a three-vane synchronous reciprocating blower, which consists of a machine foundation (7), a shell (12), a machine cover (13) and three or a plurality of independent blower air chambers which are formed by enclosure of three or a plurality of air valves (8) and have equal volume, wherein, three or a plurality of vanes (11) divide the three or the plurality of respectively independent air chambers into two parts of left air chambers (15) and right air chambers (16) the volumes of which are alternately changed along with the motion of the vanes (11); a driving mechanism converts circumferential rotation into reciprocating rotation and drives the three or the plurality of vanes (11) to perform synchronous reciprocating rotation in the three or the plurality of independent air chambers; the volumes of the respective left air chambers and the respective right air chambers are synchronously and alternately expanded and compressed, and separation of a suction channel and an exhaust channel is realized through the three or the plurality of air valves (8) which are provided with automatic start and stop one-way torsion spring valves; air is gathered and outputted through an air channel concentrator (14), thereby the aim of external blasting is achieved. The three-vane synchronous reciprocating blower overcomes the defects in a high pressure blower in the prior art that: the wind pressure is difficult to be further improved; the air loss rate is large; the abrasion is severe; the noise is astonishing and a silencer is required to be assembled.

The invention relates to a step variable cross-section rotor flywheel energy storage system with hybrid support of permanent magnet bearings and electromagnetic bearings, and belongs to the technicalfield of flywheel energy storage. The step variable cross-section rotor flywheel energy storage system with hybrid support of permanent magnet bearings and electromagnetic bearings solves the problemthat the axial length of a flywheel rotor existing in an existing flywheel energy storage system affects the dynamic mechanical characteristics of the rotor and leads to low compactness of the flywheel energy storage system structure. For the step variable cross-section rotor flywheel energy storage system with hybrid support of a permanent magnet bearing and an electromagnetic bearing, a permanent magnet thrust bearing, an upper auxiliary bearing, an outer rotor permanent magnet synchronous motor and a lower auxiliary bearing are mounted on a mandrel, and the upper end and the lower end of aflywheel rotating body are in a clearance fit state with an upper auxiliary bearing and a lower auxiliary bearing; a gap is formed between the permanent magnet thrust bearing and the upper end surfaceof the flywheel rotating body; the outer rotor permanent magnet synchronous motor is arranged in the flywheel rotating body to drive the flywheel rotating body to rotate; an upper radial electromagnetic bearing and a lower radial electromagnetic bearing are fixedly arranged on a housing; and the radial electromagnetic bearings are in a non-contact state with the outer wall of the flywheel rotating body; and the flywheel body has a step-variable cross-sectional structure. The rotor system of the step variable cross-section rotor flywheel energy storage system with hybrid support of permanent magnet bearings and electromagnetic bearings is compact in structure and enhances the characteristic of rotordynamics.

The invention relates to cleaning equipment and a base thereof. The base is used for performing drying operation on a rolling brush, the base comprises a base body and an air drying assembly, the base body comprises a base main body and an air duct forming body, a containing cavity is formed in the base main body, the air duct forming body is arranged in the containing cavity, and the air duct forming body and the inner wall of the containing cavity jointly define a drying channel; and the air drying assembly comprises an air drying piece and a heating piece, the air drying piece is arranged in the containing cavity and located in the middle of the base main body, the air drying piece is used for providing air-drying airflow for the drying channel, and the heating piece is arranged on the air outlet section of the drying channel and located on the flowing path of the air-drying airflow in the drying channel. The cleaning equipment and the base thereof provided by the invention have better drying efficiency.

The invention relates to the technical field of tunnel construction ventilation, in particular to an air duct type oxygen supply ventilation construction method for a plateau long and large tunnel. Comprising the following steps that S1, construction is conducted on an inclined shaft section, an axial-flow ventilator is arranged at an inclined shaft opening, and fresh air is pressed into an inclined shaft; s2, an oxygen generator is arranged outside the hole, and oxygen is introduced into the ventilation pipe at an air inlet of the axial flow fan; s3, when the inclined shaft is tunneled to the crossing position of the main tunnel and the parallel adit, a wind bin is constructed at the fork; s4, a relay axial flow fan is arranged in the air bin and used for supplying air to the parallel adit face and the main tunnel face; and S5, dust and oil smoke backflow in the main tunnel and the parallel guide hole and are gathered and discharged from the lower air channel of the inclined shaft. The ventilation duct is tight and does not leak air, wind loss can be greatly reduced, air leakage and air leakage can be reduced, it is guaranteed that a draught fan outside a tunnel exerts the maximum work efficiency, long-distance air supply and oxygen supply to a main tunnel parallel guide tunnel face are guaranteed, and the quality of the construction environment in the tunnel is guaranteed. The method is mainly applied to the aspect of air duct type oxygen supply and ventilation of the plateau long and large tunnel.

The invention discloses an air guide device for an air conditioner. The air guide device for the air conditioner structurally comprises an air bag, an axial fan, a rotating turbine, a rectification blade, an evaporator and an air guide mechanism, wherein the air bag is vertically fixed to the lower end of the evaporator and is matched with the axial fan; the axes of the air bag and the axial fan are collinear; the cross section of the axial fan is of a circular structure; the axial fan is horizontally clung to the front end of the air guide mechanism and is in interference fit with the air guide mechanism; the rotating turbine is horizontally arranged at the right end of the evaporator and is in interference fit with the rectification blade; the rectification blade and the air guide mechanism are of an integrated structure; the evaporator is vertically arranged at the upper end of the air bag and is mechanically connected to the air guide mechanism; and the air guide mechanism is horizontally clung to the rear end of the evaporator and is matched with the axial fan. The air guide device realizes the inhibition of air backflow, expands left and right air supplying range, shortens the fracture surface of an air outlet, increases the dynamic pressure of the air outlet and enables the supply air of the air conditioner to be comfortable.

The invention relates to the technical field of hair dryers, and specifically discloses an ion hair dryer. The ion hair dryer includes a first casing, an air supply assembly, an air outlet assembly, an ion generator and an end cover, wherein the air supply assembly is used to generate airflow; The assembly is arranged in the first casing; the air outlet assembly includes a first cylinder and a second cylinder which are nested, a first baffle for sealing the opening of one end of the first cylinder, and a second cylinder for sealing the second cylinder. A second baffle is opened at one end, and an air outlet is formed between the first cylinder and the second cylinder; the second cylinder is circumferentially spaced with a plurality of ion channels, and the air flow can flow out through the air outlet; the ion generator The end cover is detachably connected with the first shell, and the end cover is provided with a second opening communicating with the second cylinder and a main air guiding portion communicating with the air outlet air duct. The above arrangement makes the distribution of ions in the air flow out of the blower uniform, and the kinetic energy loss to the air flow is small.

The invention discloses a smoke machine air conditioner indoor unit and a smoke machine air conditioner. The smoke machine air conditioner indoor unit comprises a smoke machine module and an air conditioner indoor unit module; and the air conditioner indoor unit module and the smoke machine module are arranged in a spaced mode. The air conditioner indoor unit module comprises a shell provided with an air inlet and an air supply outlet, a heat exchanger arranged between the air inlet and the air supply outlet, and an air channel assembly comprising an air channel piece and an air wheel; the air channel piece is arranged between the heat exchanger and the air supply outlet, and the air wheel is arranged in the air channel piece so that air subjected to heat exchange can be driven to flow towards the air supply outlet; and the heat exchanger and the air channel assembly are arranged vertically. According to the smoke machine air conditioner indoor unit, the air supply range in the vertical direction can be enlarged, and the requirement for up-down wide angle air supply is met.

The application provides an air port converging mechanism of a backrest ventilation fan. The mechanism comprises a frame wire spring frame, an air guide structure is arranged on one side of the framewire spring frame, and a ventilation fan is arranged on the other side of the frame wire spring frame; a main air path connector is formed in the side, close to an air inlet of the ventilation fan, ofthe air guide structure. A first flexible air blocking cushion layer is arranged between the air guide structure and the ventilation fan in an extruding manner; the first flexible air blocking cushion layer is made of a compressible elastic wind blocking material, and one end of the first flexible air blocking cushion layer is fixedly connected to the air guide structure or the ventilation fan; afirst air path hole is formed in the first flexible air blocking cushion layer; the airflow of the main air path connector enters an air inlet of the ventilation fan through the first air path hole.The air port converging mechanism of the backrest ventilating fan is low in cost, short in air path and low in air loss, a steel wire of the frame wire spring frame does not need to be avoided at a fixed point during use; meanwhile, air path sealing between the air guide structure and the air inlet of the ventilating fan can be achieved, air leakage and air flow loss are avoided, and the reliability of a seat ventilating air path is guaranteed.

The invention relates to the technical field of blowers, and particularly discloses an ion blower which comprises a first shell, an air supply assembly, an air outlet assembly, an ion generator and an end cover, and the air supply assembly is used for generating airflow; the air outlet assembly is arranged in the first shell; the air outlet assembly comprises a first cylinder and a second cylinder which are arranged in a nested mode, a first partition plate used for sealing an opening in one end of the first cylinder and a second partition plate used for sealing an opening in one end of the second cylinder, and an air outlet channel is formed between the first cylinder and the second cylinder. A plurality of ion channels are formed in the circumferential direction of the second cylinder at intervals, and airflow can flow out through the air outlet channel; the ion generator is arranged in the second cylinder; the end cover is detachably connected with the first shell, and the end cover is provided with a second opening communicating with the second cylinder and a main air flow guide part communicating with the air outlet channel. Through the arrangement, ions in airflow flowing out of the blower are uniformly distributed, and the kinetic energy loss of the airflow is small.